diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | README | 2 | ||||
| -rwxr-xr-x | build.sh | 1 | ||||
| -rw-r--r-- | evaluation test/test.js | 52 | ||||
| -rw-r--r-- | evaluation test/test_bundle.js | 6554 | ||||
| -rw-r--r-- | main_background.js | 11 |
6 files changed, 32 insertions, 6589 deletions
@@ -10,5 +10,6 @@ node_modules/ # artifacts librejs.xpi bundle.js +test_bundle.js npm-debug.log package-lock.json @@ -4,7 +4,7 @@ BUILD: First, you need to get some stuff with npm: - $ npm install acorn + $ npm install acorn-loose $ npm install jssha $ npm install browserify $ export PATH=$PATH:./node_modules/.bin @@ -14,7 +14,6 @@ cp -r ./html ./build_temp cp -r ./content ./build_temp cp -r ./common ./build_temp cp manifest.json ./build_temp -cp contact_finder.js ./build_temp cp bundle.js ./build_temp # build zip file from temp directory diff --git a/evaluation test/test.js b/evaluation test/test.js index 4e10d8a..091c47c 100644 --- a/evaluation test/test.js +++ b/evaluation test/test.js @@ -1,6 +1,5 @@ -var acorn = require('acorn/dist/acorn_loose'); -var walk = require("acorn/dist/walk"); -var acorn_base = require("acorn"); +var acornLoose = require('acorn-loose'); +var acorn = require("acorn"); var fname_data = { "WebGLShader": true, @@ -851,12 +850,12 @@ function dbg_print(a,b){ } } function full_evaluate(script){ - var res = true; + var res = true; if(script === undefined || script == ""){ - return [true,"Harmless null script"]; + return [true,"Harmless null script"]; } - var ast = acorn.parse_dammit(script).body[0]; + var ast = acornLoose.parse(script).body[0]; var flag = false; var amtloops = 0; @@ -864,10 +863,10 @@ function full_evaluate(script){ var loopkeys = {"for":true,"if":true,"while":true,"switch":true}; var operators = {"||":true,"&&":true,"=":true,"==":true,"++":true,"--":true,"+=":true,"-=":true,"*":true}; try{ - var tokens = acorn_base.tokenizer(script); + var tokens = acorn.tokenizer(script); }catch(e){ console.warn("Tokenizer could not be initiated (probably invalid code)"); - return [false,"Tokenizer could not be initiated (probably invalid code)"]; + return [false,"Tokenizer could not be initiated (probably invalid code)"]; } try{ var toke = tokens.getToken(); @@ -911,66 +910,66 @@ function full_evaluate(script){ } } var error_count = 0; - while(toke.type != acorn_base.tokTypes.eof){ + while(toke.type != acorn.tokTypes.eof){ if(toke.type.keyword !== undefined){ // This type of loop detection ignores functional loop alternatives and ternary operators //dbg_print("Keyword:"+toke.type.keyword); console.log(toke); if(toke.type.keyword == "function"){ dbg_print("%c NONTRIVIAL: Function declaration.","color:red"); - if(DEBUG == false){ + if(DEBUG == false){ return [false,"NONTRIVIAL: Function declaration."]; - } + } } if(loopkeys[toke.type.keyword] !== undefined){ amtloops++; if(amtloops > 3){ dbg_print("%c NONTRIVIAL: Too many loops/conditionals.","color:red"); - if(DEBUG == false){ + if(DEBUG == false){ return [false,"NONTRIVIAL: Too many loops/conditionals."]; - } + } } } }else if(toke.value !== undefined){ var status = fname_data[toke.value]; - if(status === true){ // is the identifier banned? + if(status === true){ // is the identifier banned? dbg_print("%c NONTRIVIAL: nontrivial token: '"+toke.value+"'","color:red"); - if(DEBUG == false){ + if(DEBUG == false){ return [false,"NONTRIVIAL: nontrivial token: '"+toke.value+"'"]; - } + } }else if(status === false){// is the identifier not banned? // Is there bracket suffix notation? - if(operators[toke.value] === undefined){ + if(operators[toke.value] === undefined){ if(is_bsn(toke.end)){ dbg_print("%c NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'","color:red"); - if(DEBUG == false){ + if(DEBUG == false){ return [false,"%c NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'"]; - } + } } } }else if(status === undefined){// is the identifier user defined? // Are arguments being passed to a user defined variable? if(being_called(toke.end)){ dbg_print("%c NONTRIVIAL: User defined variable '"+toke.value+"' called as function","color:red"); - if(DEBUG == false){ + if(DEBUG == false){ return [false,"NONTRIVIAL: User defined variable '"+toke.value+"' called as function"]; - } + } } // Is there bracket suffix notation? - if(operators[toke.value] === undefined){ + if(operators[toke.value] === undefined){ if(is_bsn(toke.end)){ dbg_print("%c NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'","color:red"); - if(DEBUG == false){ + if(DEBUG == false){ return [false,"NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'"]; - } + } } } }else{ dbg_print("trivial token:"+toke.value); } } - // If not a keyword or an identifier it's some kind of operator, field parenthesis, brackets + // If not a keyword or an identifier it's some kind of operator, field parenthesis, brackets try{ toke = tokens.getToken(); }catch(e){ @@ -990,9 +989,8 @@ function full_evaluate(script){ window.onload = function () { document.getElementById("parse").addEventListener("click",function(){ var script = document.getElementById("input").value; - var ast = acorn.parse_dammit(script).body[0]; + var ast = acornLoose.parse(script).body[0]; document.getElementById("output").innerHTML = JSON.stringify(ast, null, '\t'); // Indented with tab document.getElementById("output").innerHTML = full_evaluate(script) + "\n\n" + document.getElementById("output").innerHTML; }); } - diff --git a/evaluation test/test_bundle.js b/evaluation test/test_bundle.js deleted file mode 100644 index 62b50d6..0000000 --- a/evaluation test/test_bundle.js +++ /dev/null @@ -1,6554 +0,0 @@ -(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ -var acorn = require('acorn/dist/acorn_loose'); -var walk = require("acorn/dist/walk"); -var acorn_base = require("acorn"); - -var fname_data = { - "WebGLShader": true, - "WebGLShaderPrecisionFormat": true, - "WebGLQuery": true, - "WebGLRenderbuffer": true, - "WebGLSampler": true, - "WebGLUniformLocation": true, - "WebGLFramebuffer": true, - "WebGLProgram": true, - "WebGLContextEvent": true, - "WebGL2RenderingContext": true, - "WebGLTexture": true, - "WebGLRenderingContext": true, - "WebGLVertexArrayObject": true, - "WebGLActiveInfo": true, - "WebGLTransformFeedback": true, - "WebGLSync": true, - "WebGLBuffer": true, - "cat_svg": true, - "SVGPoint": true, - "SVGEllipseElement": true, - "SVGRadialGradientElement": true, - "SVGComponentTransferFunctionElement": true, - "SVGPathSegCurvetoQuadraticAbs": true, - "SVGAnimatedNumberList": true, - "SVGPathSegCurvetoQuadraticSmoothRel": true, - "SVGFEColorMatrixElement": true, - "SVGPathSegLinetoHorizontalAbs": true, - "SVGLinearGradientElement": true, - "SVGStyleElement": true, - "SVGPathSegMovetoRel": true, - "SVGStopElement": true, - "SVGPathSegLinetoRel": true, - "SVGFEConvolveMatrixElement": true, - "SVGAnimatedAngle": true, - "SVGPathSegLinetoAbs": true, - "SVGPreserveAspectRatio": true, - "SVGFEOffsetElement": true, - "SVGFEImageElement": true, - "SVGFEDiffuseLightingElement": true, - "SVGAnimatedNumber": true, - "SVGTextElement": true, - "SVGFESpotLightElement": true, - "SVGFEMorphologyElement": true, - "SVGAngle": true, - "SVGScriptElement": true, - "SVGFEDropShadowElement": true, - "SVGPathSegArcRel": true, - "SVGNumber": true, - "SVGPathSegLinetoHorizontalRel": true, - "SVGFEFuncBElement": true, - "SVGClipPathElement": true, - "SVGPathSeg": true, - "SVGUseElement": true, - "SVGPathSegArcAbs": true, - "SVGPathSegCurvetoQuadraticSmoothAbs": true, - "SVGRect": true, - "SVGAnimatedPreserveAspectRatio": true, - "SVGImageElement": true, - "SVGAnimatedEnumeration": true, - "SVGAnimatedLengthList": true, - "SVGFEFloodElement": true, - "SVGFECompositeElement": true, - "SVGAElement": true, - "SVGAnimatedBoolean": true, - "SVGMaskElement": true, - "SVGFilterElement": true, - "SVGPathSegLinetoVerticalRel": true, - "SVGAnimatedInteger": true, - "SVGTSpanElement": true, - "SVGMarkerElement": true, - "SVGStringList": true, - "SVGTransform": true, - "SVGTitleElement": true, - "SVGFEBlendElement": true, - "SVGTextPositioningElement": true, - "SVGFEFuncGElement": true, - "SVGFEPointLightElement": true, - "SVGAnimateElement": true, - "SVGPolylineElement": true, - "SVGDefsElement": true, - "SVGPathSegList": true, - "SVGAnimatedTransformList": true, - "SVGPathSegClosePath": true, - "SVGGradientElement": true, - "SVGSwitchElement": true, - "SVGViewElement": true, - "SVGUnitTypes": true, - "SVGPathSegMovetoAbs": true, - "SVGSymbolElement": true, - "SVGFEFuncAElement": true, - "SVGAnimatedString": true, - "SVGFEMergeElement": true, - "SVGPathSegLinetoVerticalAbs": true, - "SVGAnimationElement": true, - "SVGPathSegCurvetoCubicAbs": true, - "SVGLength": true, - "SVGTextPathElement": true, - "SVGPolygonElement": true, - "SVGAnimatedRect": true, - "SVGPathSegCurvetoCubicRel": true, - "SVGFEFuncRElement": true, - "SVGLengthList": true, - "SVGTextContentElement": true, - "SVGFETurbulenceElement": true, - "SVGMatrix": true, - "SVGZoomAndPan": true, - "SVGMetadataElement": true, - "SVGFEDistantLightElement": true, - "SVGAnimateMotionElement": true, - "SVGDescElement": true, - "SVGPathSegCurvetoCubicSmoothRel": true, - "SVGFESpecularLightingElement": true, - "SVGFEGaussianBlurElement": true, - "SVGFEComponentTransferElement": true, - "SVGNumberList": true, - "SVGTransformList": true, - "SVGForeignObjectElement": true, - "SVGRectElement": true, - "SVGFEDisplacementMapElement": true, - "SVGAnimateTransformElement": true, - "SVGAnimatedLength": true, - "SVGPointList": true, - "SVGPatternElement": true, - "SVGPathSegCurvetoCubicSmoothAbs": true, - "SVGCircleElement": true, - "SVGSetElement": true, - "SVGFETileElement": true, - "SVGMPathElement": true, - "SVGFEMergeNodeElement": true, - "SVGPathSegCurvetoQuadraticRel": true, - "SVGElement": true, - "SVGGraphicsElement": true, - "SVGSVGElement": true, - "SVGGElement": true, - "SVGGeometryElement": true, - "SVGPathElement": true, - "SVGLineElement": true, - "cat_html": true, - "HTMLTimeElement": true, - "HTMLPictureElement": true, - "HTMLMenuItemElement": true, - "HTMLFormElement": true, - "HTMLOptionElement": true, - "HTMLCanvasElement": true, - "HTMLTableSectionElement": true, - "HTMLSelectElement": true, - "HTMLUListElement": true, - "HTMLMetaElement": true, - "HTMLLinkElement": true, - "HTMLBaseElement": true, - "HTMLDataListElement": true, - "HTMLInputElement": true, - "HTMLMeterElement": true, - "HTMLSourceElement": true, - "HTMLTrackElement": true, - "HTMLTableColElement": true, - "HTMLFieldSetElement": true, - "HTMLDirectoryElement": true, - "HTMLTableCellElement": true, - "HTMLStyleElement": true, - "HTMLAudioElement": true, - "HTMLLegendElement": true, - "HTMLOListElement": true, - "HTMLEmbedElement": true, - "HTMLQuoteElement": true, - "HTMLMenuElement": true, - "HTMLHeadElement": true, - "HTMLUnknownElement": true, - "HTMLBRElement": true, - "HTMLProgressElement": true, - "HTMLMediaElement": true, - "HTMLFormControlsCollection": true, - "HTMLCollection": true, - "HTMLLIElement": true, - "HTMLDetailsElement": true, - "HTMLObjectElement": true, - "HTMLHeadingElement": true, - "HTMLTableCaptionElement": true, - "HTMLPreElement": true, - "HTMLAllCollection": true, - "HTMLFrameSetElement": true, - "HTMLFontElement": true, - "HTMLFrameElement": true, - "HTMLAnchorElement": true, - "HTMLOptGroupElement": true, - "HTMLVideoElement": true, - "HTMLModElement": true, - "HTMLBodyElement": true, - "HTMLTableElement": true, - "HTMLButtonElement": true, - "HTMLTableRowElement": true, - "HTMLAreaElement": true, - "HTMLDataElement": true, - "HTMLParamElement": true, - "HTMLLabelElement": true, - "HTMLTemplateElement": true, - "HTMLOptionsCollection": true, - "HTMLIFrameElement": true, - "HTMLTitleElement": true, - "HTMLMapElement": true, - "HTMLOutputElement": true, - "HTMLDListElement": true, - "HTMLParagraphElement": true, - "HTMLHRElement": true, - "HTMLImageElement": true, - "HTMLDocument": true, - "HTMLElement": true, - "HTMLScriptElement": true, - "HTMLHtmlElement": true, - "HTMLTextAreaElement": true, - "HTMLDivElement": true, - "HTMLSpanElement": true, - "cat_css": true, - "CSSStyleRule": true, - "CSSFontFaceRule": true, - "CSSPrimitiveValue": true, - "CSSStyleDeclaration": true, - "CSSStyleSheet": true, - "CSSPageRule": true, - "CSSSupportsRule": true, - "CSSMozDocumentRule": true, - "CSSKeyframeRule": true, - "CSSGroupingRule": true, - "CSS2Properties": true, - "CSSFontFeatureValuesRule": true, - "CSSRuleList": true, - "CSSPseudoElement": true, - "CSSMediaRule": true, - "CSSCounterStyleRule": true, - "CSSImportRule": true, - "CSSTransition": true, - "CSSAnimation": true, - "CSSValue": true, - "CSSNamespaceRule": true, - "CSSRule": true, - "CSS": true, - "CSSKeyframesRule": true, - "CSSConditionRule": true, - "CSSValueList": true, - "cat_event": true, - "ondevicemotion": true, - "ondeviceorientation": true, - "onabsolutedeviceorientation": true, - "ondeviceproximity": true, - "onuserproximity": true, - "ondevicelight": true, - "onvrdisplayconnect": true, - "onvrdisplaydisconnect": true, - "onvrdisplayactivate": true, - "onvrdisplaydeactivate": true, - "onvrdisplaypresentchange": true, - "onabort": true, - "onblur": true, - "onfocus": true, - "onauxclick": true, - "oncanplay": true, - "oncanplaythrough": true, - "onchange": true, - "onclick": true, - "onclose": true, - "oncontextmenu": true, - "ondblclick": true, - "ondrag": true, - "ondragend": true, - "ondragenter": true, - "ondragexit": true, - "ondragleave": true, - "ondragover": true, - "ondragstart": true, - "ondrop": true, - "ondurationchange": true, - "onemptied": true, - "onended": true, - "oninput": true, - "oninvalid": true, - "onkeydown": true, - "onkeypress": true, - "onkeyup": true, - "onload": true, - "onloadeddata": true, - "onloadedmetadata": true, - "onloadend": true, - "onloadstart": true, - "onmousedown": true, - "onmouseenter": true, - "onmouseleave": true, - "onmousemove": true, - "onmouseout": true, - "onmouseover": true, - "onmouseup": true, - "onwheel": true, - "onpause": true, - "onplay": true, - "onplaying": true, - "onprogress": true, - "onratechange": true, - "onreset": true, - "onresize": true, - "onscroll": true, - "onseeked": true, - "onseeking": true, - "onselect": true, - "onshow": true, - "onstalled": true, - "onsubmit": true, - "onsuspend": true, - "ontimeupdate": true, - "onvolumechange": true, - "onwaiting": true, - "onselectstart": true, - "ontoggle": true, - "onpointercancel": true, - "onpointerdown": true, - "onpointerup": true, - "onpointermove": true, - "onpointerout": true, - "onpointerover": true, - "onpointerenter": true, - "onpointerleave": true, - "ongotpointercapture": true, - "onlostpointercapture": true, - "onmozfullscreenchange": true, - "onmozfullscreenerror": true, - "onanimationcancel": true, - "onanimationend": true, - "onanimationiteration": true, - "onanimationstart": true, - "ontransitioncancel": true, - "ontransitionend": true, - "ontransitionrun": true, - "ontransitionstart": true, - "onwebkitanimationend": true, - "onwebkitanimationiteration": true, - "onwebkitanimationstart": true, - "onwebkittransitionend": true, - "onerror": true, - "onafterprint": true, - "onbeforeprint": true, - "onbeforeunload": true, - "onhashchange": true, - "onlanguagechange": true, - "onmessage": true, - "onmessageerror": true, - "onoffline": true, - "ononline": true, - "onpagehide": true, - "onpageshow": true, - "onpopstate": true, - "onstorage": true, - "onunload": true, - "cat_rtc": true, - "RTCDTMFSender": true, - "RTCStatsReport": true, - "RTCTrackEvent": true, - "RTCDataChannelEvent": true, - "RTCPeerConnectionIceEvent": true, - "RTCCertificate": true, - "RTCDTMFToneChangeEvent": true, - "RTCPeerConnection": true, - "RTCIceCandidate": true, - "RTCRtpReceiver": true, - "RTCRtpSender": true, - "RTCSessionDescription": true, - "cat_vr": true, - "VRStageParameters": true, - "VRFrameData": true, - "VRDisplay": true, - "VRDisplayEvent": true, - "VRFieldOfView": true, - "VRDisplayCapabilities": true, - "VREyeParameters": true, - "VRPose": true, - "cat_dom": true, - "DOMStringMap": true, - "DOMRectReadOnly": true, - "DOMException": true, - "DOMRect": true, - "DOMMatrix": true, - "DOMMatrixReadOnly": true, - "DOMPointReadOnly": true, - "DOMPoint": true, - "DOMQuad": true, - "DOMRequest": true, - "DOMParser": true, - "DOMTokenList": true, - "DOMStringList": true, - "DOMImplementation": true, - "DOMError": true, - "DOMRectList": true, - "DOMCursor": true, - "cat_idb": true, - "IDBFileRequest": true, - "IDBTransaction": true, - "IDBCursor": true, - "IDBFileHandle": true, - "IDBMutableFile": true, - "IDBKeyRange": true, - "IDBVersionChangeEvent": true, - "IDBObjectStore": true, - "IDBFactory": true, - "IDBCursorWithValue": true, - "IDBOpenDBRequest": true, - "IDBRequest": true, - "IDBIndex": true, - "IDBDatabase": true, - "cat_audio": true, - "AudioContext": true, - "AudioBuffer": true, - "AudioBufferSourceNode": true, - "Audio": true, - "MediaElementAudioSourceNode": true, - "AudioNode": true, - "BaseAudioContext": true, - "AudioListener": true, - "MediaStreamAudioSourceNode": true, - "OfflineAudioContext": true, - "AudioDestinationNode": true, - "AudioParam": true, - "MediaStreamAudioDestinationNode": true, - "OfflineAudioCompletionEvent": true, - "AudioStreamTrack": true, - "AudioScheduledSourceNode": true, - "AudioProcessingEvent": true, - "cat_gamepad": true, - "GamepadButton": true, - "GamepadHapticActuator": true, - "GamepadAxisMoveEvent": true, - "GamepadPose": true, - "GamepadEvent": true, - "Gamepad": true, - "GamepadButtonEvent": true, - "cat_media": true, - "MediaKeys": true, - "MediaKeyError": true, - "MediaSource": true, - "MediaDevices": true, - "MediaKeyStatusMap": true, - "MediaStreamTrackEvent": true, - "MediaRecorder": true, - "MediaQueryListEvent": true, - "MediaStream": true, - "MediaEncryptedEvent": true, - "MediaStreamTrack": true, - "MediaError": true, - "MediaStreamEvent": true, - "MediaQueryList": true, - "MediaKeySystemAccess": true, - "MediaDeviceInfo": true, - "MediaKeySession": true, - "MediaList": true, - "MediaRecorderErrorEvent": true, - "MediaKeyMessageEvent": true, - "cat_event2": true, - "SpeechSynthesisErrorEvent": true, - "BeforeUnloadEvent": true, - "CustomEvent": true, - "PageTransitionEvent": true, - "PopupBlockedEvent": true, - "CloseEvent": true, - "ProgressEvent": true, - "MutationEvent": true, - "MessageEvent": true, - "FocusEvent": true, - "TrackEvent": true, - "DeviceMotionEvent": true, - "TimeEvent": true, - "PointerEvent": true, - "UserProximityEvent": true, - "StorageEvent": true, - "DragEvent": true, - "MouseScrollEvent": true, - "EventSource": true, - "PopStateEvent": true, - "DeviceProximityEvent": true, - "SpeechSynthesisEvent": true, - "XMLHttpRequestEventTarget": true, - "ClipboardEvent": true, - "AnimationPlaybackEvent": true, - "DeviceLightEvent": true, - "BlobEvent": true, - "MouseEvent": true, - "WheelEvent": true, - "InputEvent": true, - "HashChangeEvent": true, - "DeviceOrientationEvent": true, - "CompositionEvent": true, - "KeyEvent": true, - "ScrollAreaEvent": true, - "KeyboardEvent": true, - "TransitionEvent": true, - "ErrorEvent": true, - "AnimationEvent": true, - "FontFaceSetLoadEvent": true, - "EventTarget": true, - "captureEvents": true, - "releaseEvents": true, - "Event": true, - "UIEvent": true, - "cat_other": false, - "undefined": false, - "Array": false, - "Boolean": false, - "JSON": false, - "Date": false, - "Math": false, - "Number": false, - "String": false, - "RegExp": false, - "Error": false, - "InternalError": false, - "EvalError": false, - "RangeError": false, - "ReferenceError": false, - "SyntaxError": false, - "TypeError": false, - "URIError": false, - "ArrayBuffer": true, - "Int8Array": true, - "Uint8Array": true, - "Int16Array": true, - "Uint16Array": true, - "Int32Array": true, - "Uint32Array": true, - "Float32Array": true, - "Float64Array": true, - "Uint8ClampedArray": true, - "Proxy": true, - "WeakMap": true, - "Map": true, - "Set": true, - "DataView": false, - "Symbol": false, - "SharedArrayBuffer": true, - "Intl": false, - "TypedObject": true, - "Reflect": true, - "SIMD": true, - "WeakSet": true, - "Atomics": true, - "Promise": true, - "WebAssembly": true, - "NaN": false, - "Infinity": false, - "isNaN": false, - "isFinite": false, - "parseFloat": false, - "parseInt": false, - "escape": false, - "unescape": false, - "decodeURI": false, - "encodeURI": false, - "decodeURIComponent": false, - "encodeURIComponent": false, - "uneval": false, - "BatteryManager": true, - "CanvasGradient": true, - "TextDecoder": true, - "Plugin": true, - "PushManager": true, - "ChannelMergerNode": true, - "PerformanceResourceTiming": true, - "ServiceWorker": true, - "TextTrackCueList": true, - "PerformanceEntry": true, - "TextTrackList": true, - "StyleSheet": true, - "PerformanceMeasure": true, - "DesktopNotificationCenter": true, - "Comment": true, - "DelayNode": true, - "XPathResult": true, - "CDATASection": true, - "MessageChannel": true, - "BiquadFilterNode": true, - "SpeechSynthesisUtterance": true, - "Crypto": true, - "Navigator": true, - "FileList": true, - "URLSearchParams": false, - "ServiceWorkerContainer": true, - "ValidityState": true, - "ProcessingInstruction": true, - "AbortSignal": true, - "FontFace": true, - "FileReader": true, - "Worker": true, - "External": true, - "ImageBitmap": true, - "TimeRanges": true, - "Option": true, - "TextTrack": true, - "Image": true, - "AnimationTimeline": true, - "VideoPlaybackQuality": true, - "VTTCue": true, - "Storage": true, - "XPathExpression": true, - "CharacterData": false, - "TextMetrics": true, - "AnimationEffectReadOnly": true, - "PerformanceTiming": false, - "PerformanceMark": true, - "ImageBitmapRenderingContext": true, - "Headers": true, - "Range": false, - "Rect": true, - "AnimationEffectTimingReadOnly": true, - "KeyframeEffect": true, - "Permissions": true, - "TextEncoder": true, - "ImageData": true, - "SpeechSynthesisVoice": true, - "StorageManager": true, - "TextTrackCue": true, - "WebSocket": true, - "DocumentType": true, - "XPathEvaluator": true, - "PerformanceNavigationTiming": true, - "IdleDeadline": true, - "FileSystem": true, - "FileSystemFileEntry": true, - "CacheStorage": true, - "MimeType": true, - "PannerNode": true, - "NodeFilter": true, - "StereoPannerNode": true, - "console": false, - "DynamicsCompressorNode": true, - "PaintRequest": true, - "RGBColor": true, - "FontFaceSet": false, - "PaintRequestList": true, - "FileSystemEntry": true, - "XMLDocument": false, - "SourceBuffer": false, - "Screen": true, - "NamedNodeMap": false, - "History": true, - "Response": true, - "AnimationEffectTiming": true, - "ServiceWorkerRegistration": true, - "CanvasRenderingContext2D": true, - "ScriptProcessorNode": true, - "FileSystemDirectoryReader": true, - "MimeTypeArray": true, - "CanvasCaptureMediaStream": true, - "Directory": true, - "mozRTCPeerConnection": true, - "PerformanceObserverEntryList": true, - "PushSubscriptionOptions": true, - "Text": false, - "IntersectionObserverEntry": true, - "SubtleCrypto": true, - "Animation": true, - "DataTransfer": true, - "TreeWalker": true, - "XMLHttpRequest": true, - "LocalMediaStream": true, - "ConvolverNode": true, - "WaveShaperNode": true, - "DataTransferItemList": false, - "Request": true, - "SourceBufferList": false, - "XSLTProcessor": true, - "XMLHttpRequestUpload": true, - "SharedWorker": true, - "Notification": false, - "DataTransferItem": true, - "AnalyserNode": true, - "mozRTCIceCandidate": true, - "PerformanceObserver": true, - "OfflineResourceList": true, - "FileSystemDirectoryEntry": true, - "DesktopNotification": false, - "DataChannel": true, - "IIRFilterNode": true, - "ChannelSplitterNode": true, - "File": true, - "ConstantSourceNode": true, - "CryptoKey": true, - "GainNode": true, - "AbortController": true, - "Attr": true, - "SpeechSynthesis": true, - "PushSubscription": false, - "XMLStylesheetProcessingInstruction": false, - "NodeIterator": true, - "VideoStreamTrack": true, - "XMLSerializer": true, - "CaretPosition": true, - "FormData": true, - "CanvasPattern": true, - "mozRTCSessionDescription": true, - "Path2D": true, - "PerformanceNavigation": true, - "URL": false, - "PluginArray": true, - "MutationRecord": true, - "WebKitCSSMatrix": true, - "PeriodicWave": true, - "DocumentFragment": true, - "DocumentTimeline": false, - "ScreenOrientation": true, - "BroadcastChannel": true, - "PermissionStatus": true, - "IntersectionObserver": true, - "Blob": true, - "MessagePort": true, - "BarProp": true, - "OscillatorNode": true, - "Cache": true, - "RadioNodeList": true, - "KeyframeEffectReadOnly": true, - "InstallTrigger": true, - "Function": false, - "Object": false, - "eval": true, - "Window": false, - "close": false, - "stop": false, - "focus": false, - "blur": false, - "open": true, - "alert": false, - "confirm": false, - "prompt": false, - "print": false, - "postMessage": true, - "getSelection": true, - "getComputedStyle": true, - "matchMedia": true, - "moveTo": false, - "moveBy": false, - "resizeTo": false, - "resizeBy": false, - "scroll": false, - "scrollTo": false, - "scrollBy": false, - "requestAnimationFrame": true, - "cancelAnimationFrame": true, - "getDefaultComputedStyle": false, - "scrollByLines": false, - "scrollByPages": false, - "sizeToContent": false, - "updateCommands": true, - "find": false, - "dump": true, - "setResizable": false, - "requestIdleCallback": false, - "cancelIdleCallback": false, - "btoa": true, - "atob": true, - "setTimeout": true, - "clearTimeout": true, - "setInterval": true, - "clearInterval": true, - "createImageBitmap": true, - "fetch": true, - "self": true, - "name": false, - "history": true, - "locationbar": true, - "menubar": true, - "personalbar": true, - "scrollbars": true, - "statusbar": true, - "toolbar": true, - "status": true, - "closed": true, - "frames": true, - "length": false, - "opener": true, - "parent": true, - "frameElement": true, - "navigator": true, - "external": true, - "applicationCache": true, - "screen": true, - "innerWidth": true, - "innerHeight": true, - "scrollX": true, - "pageXOffset": true, - "scrollY": true, - "pageYOffset": true, - "screenX": true, - "screenY": true, - "outerWidth": true, - "outerHeight": true, - "performance": true, - "mozInnerScreenX": true, - "mozInnerScreenY": true, - "devicePixelRatio": true, - "scrollMaxX": true, - "scrollMaxY": true, - "fullScreen": false, - "mozPaintCount": true, - "sidebar": false, - "crypto": true, - "speechSynthesis": true, - "localStorage": true, - "origin": true, - "isSecureContext": false, - "indexedDB": true, - "caches": true, - "sessionStorage": true, - "window": false, - "document": true, - "location": false, - "top": true, - "netscape": true, - "Node": true, - "Document": true, - "Performance": false, - "startProfiling": true, - "stopProfiling": true, - "pauseProfilers": true, - "resumeProfilers": true, - "dumpProfile": true, - "getMaxGCPauseSinceClear": true, - "clearMaxGCPauseAccumulator": true, - "Location": true, - "StyleSheetList": false, - "Selection": false, - "Element": true, - "AnonymousContent": false, - "MutationObserver": true, - "NodeList": true, - "StopIteration": true -}; - - -//************************Comes from HTML file index.html's script test.js**************************** - -/** -* If this is true, it evaluates entire scripts instead of returning as soon as it encounters a violation. -* -* Also, it controls whether or not this part of the code logs to the console. -* -*/ -var DEBUG = true; -console.log("DEBUG:"+DEBUG); - -function dbg_print(a,b){ - if(DEBUG == true){ - console.log(a,b) - } -} -function full_evaluate(script){ - var res = true; - if(script === undefined || script == ""){ - return [true,"Harmless null script"]; - } - - var ast = acorn.parse_dammit(script).body[0]; - - var flag = false; - var amtloops = 0; - - var loopkeys = {"for":true,"if":true,"while":true,"switch":true}; - var operators = {"||":true,"&&":true,"=":true,"==":true,"++":true,"--":true,"+=":true,"-=":true,"*":true}; - try{ - var tokens = acorn_base.tokenizer(script); - }catch(e){ - console.warn("Tokenizer could not be initiated (probably invalid code)"); - return [false,"Tokenizer could not be initiated (probably invalid code)"]; - } - try{ - var toke = tokens.getToken(); - }catch(e){ - console.warn("couldn't get first token (probably invalid code)"); - console.warn("Continuing evaluation"); - } - - /** - * Given the end of an identifer token, it tests for bracket suffix notation - */ - function being_called(end){ - var i = 0; - while(script.charAt(end+i).match(/\s/g) !== null){ - i++; - if(i >= script.length-1){ - return false; - } - } - if(script.charAt(end+i) == "("){ - return true; - }else{ - return false; - } - } - /** - * Given the end of an identifer token, it tests for parentheses - */ - function is_bsn(end){ - var i = 0; - while(script.charAt(end+i).match(/\s/g) !== null){ - i++; - if(i >= script.length-1){ - return false; - } - } - if(script.charAt(end+i) == "["){ - return true; - }else{ - return false; - } - } - var error_count = 0; - while(toke.type != acorn_base.tokTypes.eof){ - if(toke.type.keyword !== undefined){ - // This type of loop detection ignores functional loop alternatives and ternary operators - //dbg_print("Keyword:"+toke.type.keyword); - console.log(toke); - if(toke.type.keyword == "function"){ - dbg_print("%c NONTRIVIAL: Function declaration.","color:red"); - if(DEBUG == false){ - return [false,"NONTRIVIAL: Function declaration."]; - } - } - - if(loopkeys[toke.type.keyword] !== undefined){ - amtloops++; - if(amtloops > 3){ - dbg_print("%c NONTRIVIAL: Too many loops/conditionals.","color:red"); - if(DEBUG == false){ - return [false,"NONTRIVIAL: Too many loops/conditionals."]; - } - } - } - }else if(toke.value !== undefined){ - var status = fname_data[toke.value]; - if(status === true){ // is the identifier banned? - dbg_print("%c NONTRIVIAL: nontrivial token: '"+toke.value+"'","color:red"); - if(DEBUG == false){ - return [false,"NONTRIVIAL: nontrivial token: '"+toke.value+"'"]; - } - }else if(status === false){// is the identifier not banned? - // Is there bracket suffix notation? - if(operators[toke.value] === undefined){ - if(is_bsn(toke.end)){ - dbg_print("%c NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'","color:red"); - if(DEBUG == false){ - return [false,"%c NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'"]; - } - } - } - }else if(status === undefined){// is the identifier user defined? - // Are arguments being passed to a user defined variable? - if(being_called(toke.end)){ - dbg_print("%c NONTRIVIAL: User defined variable '"+toke.value+"' called as function","color:red"); - if(DEBUG == false){ - return [false,"NONTRIVIAL: User defined variable '"+toke.value+"' called as function"]; - } - } - // Is there bracket suffix notation? - if(operators[toke.value] === undefined){ - if(is_bsn(toke.end)){ - dbg_print("%c NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'","color:red"); - if(DEBUG == false){ - return [false,"NONTRIVIAL: Bracket suffix notation on variable '"+toke.value+"'"]; - } - } - } - }else{ - dbg_print("trivial token:"+toke.value); - } - } - // If not a keyword or an identifier it's some kind of operator, field parenthesis, brackets - try{ - toke = tokens.getToken(); - }catch(e){ - dbg_print("Denied script because it cannot be parsed."); - return [false,"NONTRIVIAL: Cannot be parsed."]; - console.warn("Continuing evaluation"); - error_count++; - } - } - - dbg_print("%cAppears to be trivial.","color:green;"); - return [true,"Script appears to be trivial."]; -} - -//**************************************************************************************************** - -window.onload = function () { - document.getElementById("parse").addEventListener("click",function(){ - var script = document.getElementById("input").value; - var ast = acorn.parse_dammit(script).body[0]; - document.getElementById("output").innerHTML = JSON.stringify(ast, null, '\t'); // Indented with tab - document.getElementById("output").innerHTML = full_evaluate(script) + "\n\n" + document.getElementById("output").innerHTML; - }); -} - - -},{"acorn":2,"acorn/dist/acorn_loose":3,"acorn/dist/walk":4}],2:[function(require,module,exports){ -(function (global, factory) { - typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : - typeof define === 'function' && define.amd ? define(['exports'], factory) : - (factory((global.acorn = global.acorn || {}))); -}(this, (function (exports) { 'use strict'; - -// Reserved word lists for various dialects of the language - -var reservedWords = { - 3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile", - 5: "class enum extends super const export import", - 6: "enum", - strict: "implements interface let package private protected public static yield", - strictBind: "eval arguments" -}; - -// And the keywords - -var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this"; - -var keywords = { - 5: ecma5AndLessKeywords, - 6: ecma5AndLessKeywords + " const class extends export import super" -}; - -// ## Character categories - -// Big ugly regular expressions that match characters in the -// whitespace, identifier, and identifier-start categories. These -// are only applied when a character is found to actually have a -// code point above 128. -// Generated by `bin/generate-identifier-regex.js`. - -var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fd5\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ae\ua7b0-\ua7b7\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab65\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc"; -var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d4-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c03\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d01-\u0d03\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1cf8\u1cf9\u1dc0-\u1df5\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua900-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f"; - -var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]"); -var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]"); - -nonASCIIidentifierStartChars = nonASCIIidentifierChars = null; - -// These are a run-length and offset encoded representation of the -// >0xffff code points that are a valid part of identifiers. The -// offset starts at 0x10000, and each pair of numbers represents an -// offset to the next range, and then a size of the range. They were -// generated by bin/generate-identifier-regex.js - -// eslint-disable-next-line comma-spacing -var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,17,26,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,26,45,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,785,52,76,44,33,24,27,35,42,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,25,391,63,32,0,449,56,264,8,2,36,18,0,50,29,881,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,881,68,12,0,67,12,65,0,32,6124,20,754,9486,1,3071,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,10591,541]; - -// eslint-disable-next-line comma-spacing -var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,1306,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,52,0,13,2,49,13,10,2,4,9,83,11,7,0,161,11,6,9,7,3,57,0,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,87,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,423,9,838,7,2,7,17,9,57,21,2,13,19882,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239]; - -// This has a complexity linear to the value of the code. The -// assumption is that looking up astral identifier characters is -// rare. -function isInAstralSet(code, set) { - var pos = 0x10000; - for (var i = 0; i < set.length; i += 2) { - pos += set[i]; - if (pos > code) { return false } - pos += set[i + 1]; - if (pos >= code) { return true } - } -} - -// Test whether a given character code starts an identifier. - -function isIdentifierStart(code, astral) { - if (code < 65) { return code === 36 } - if (code < 91) { return true } - if (code < 97) { return code === 95 } - if (code < 123) { return true } - if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code)) } - if (astral === false) { return false } - return isInAstralSet(code, astralIdentifierStartCodes) -} - -// Test whether a given character is part of an identifier. - -function isIdentifierChar(code, astral) { - if (code < 48) { return code === 36 } - if (code < 58) { return true } - if (code < 65) { return false } - if (code < 91) { return true } - if (code < 97) { return code === 95 } - if (code < 123) { return true } - if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code)) } - if (astral === false) { return false } - return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes) -} - -// ## Token types - -// The assignment of fine-grained, information-carrying type objects -// allows the tokenizer to store the information it has about a -// token in a way that is very cheap for the parser to look up. - -// All token type variables start with an underscore, to make them -// easy to recognize. - -// The `beforeExpr` property is used to disambiguate between regular -// expressions and divisions. It is set on all token types that can -// be followed by an expression (thus, a slash after them would be a -// regular expression). -// -// The `startsExpr` property is used to check if the token ends a -// `yield` expression. It is set on all token types that either can -// directly start an expression (like a quotation mark) or can -// continue an expression (like the body of a string). -// -// `isLoop` marks a keyword as starting a loop, which is important -// to know when parsing a label, in order to allow or disallow -// continue jumps to that label. - -var TokenType = function TokenType(label, conf) { - if ( conf === void 0 ) conf = {}; - - this.label = label; - this.keyword = conf.keyword; - this.beforeExpr = !!conf.beforeExpr; - this.startsExpr = !!conf.startsExpr; - this.isLoop = !!conf.isLoop; - this.isAssign = !!conf.isAssign; - this.prefix = !!conf.prefix; - this.postfix = !!conf.postfix; - this.binop = conf.binop || null; - this.updateContext = null; -}; - -function binop(name, prec) { - return new TokenType(name, {beforeExpr: true, binop: prec}) -} -var beforeExpr = {beforeExpr: true}; -var startsExpr = {startsExpr: true}; - -// Map keyword names to token types. - -var keywords$1 = {}; - -// Succinct definitions of keyword token types -function kw(name, options) { - if ( options === void 0 ) options = {}; - - options.keyword = name; - return keywords$1[name] = new TokenType(name, options) -} - -var types = { - num: new TokenType("num", startsExpr), - regexp: new TokenType("regexp", startsExpr), - string: new TokenType("string", startsExpr), - name: new TokenType("name", startsExpr), - eof: new TokenType("eof"), - - // Punctuation token types. - bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}), - bracketR: new TokenType("]"), - braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}), - braceR: new TokenType("}"), - parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}), - parenR: new TokenType(")"), - comma: new TokenType(",", beforeExpr), - semi: new TokenType(";", beforeExpr), - colon: new TokenType(":", beforeExpr), - dot: new TokenType("."), - question: new TokenType("?", beforeExpr), - arrow: new TokenType("=>", beforeExpr), - template: new TokenType("template"), - invalidTemplate: new TokenType("invalidTemplate"), - ellipsis: new TokenType("...", beforeExpr), - backQuote: new TokenType("`", startsExpr), - dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}), - - // Operators. These carry several kinds of properties to help the - // parser use them properly (the presence of these properties is - // what categorizes them as operators). - // - // `binop`, when present, specifies that this operator is a binary - // operator, and will refer to its precedence. - // - // `prefix` and `postfix` mark the operator as a prefix or postfix - // unary operator. - // - // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as - // binary operators with a very low precedence, that should result - // in AssignmentExpression nodes. - - eq: new TokenType("=", {beforeExpr: true, isAssign: true}), - assign: new TokenType("_=", {beforeExpr: true, isAssign: true}), - incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}), - prefix: new TokenType("!/~", {beforeExpr: true, prefix: true, startsExpr: true}), - logicalOR: binop("||", 1), - logicalAND: binop("&&", 2), - bitwiseOR: binop("|", 3), - bitwiseXOR: binop("^", 4), - bitwiseAND: binop("&", 5), - equality: binop("==/!=/===/!==", 6), - relational: binop("</>/<=/>=", 7), - bitShift: binop("<</>>/>>>", 8), - plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}), - modulo: binop("%", 10), - star: binop("*", 10), - slash: binop("/", 10), - starstar: new TokenType("**", {beforeExpr: true}), - - // Keyword token types. - _break: kw("break"), - _case: kw("case", beforeExpr), - _catch: kw("catch"), - _continue: kw("continue"), - _debugger: kw("debugger"), - _default: kw("default", beforeExpr), - _do: kw("do", {isLoop: true, beforeExpr: true}), - _else: kw("else", beforeExpr), - _finally: kw("finally"), - _for: kw("for", {isLoop: true}), - _function: kw("function", startsExpr), - _if: kw("if"), - _return: kw("return", beforeExpr), - _switch: kw("switch"), - _throw: kw("throw", beforeExpr), - _try: kw("try"), - _var: kw("var"), - _const: kw("const"), - _while: kw("while", {isLoop: true}), - _with: kw("with"), - _new: kw("new", {beforeExpr: true, startsExpr: true}), - _this: kw("this", startsExpr), - _super: kw("super", startsExpr), - _class: kw("class", startsExpr), - _extends: kw("extends", beforeExpr), - _export: kw("export"), - _import: kw("import"), - _null: kw("null", startsExpr), - _true: kw("true", startsExpr), - _false: kw("false", startsExpr), - _in: kw("in", {beforeExpr: true, binop: 7}), - _instanceof: kw("instanceof", {beforeExpr: true, binop: 7}), - _typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}), - _void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}), - _delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true}) -}; - -// Matches a whole line break (where CRLF is considered a single -// line break). Used to count lines. - -var lineBreak = /\r\n?|\n|\u2028|\u2029/; -var lineBreakG = new RegExp(lineBreak.source, "g"); - -function isNewLine(code) { - return code === 10 || code === 13 || code === 0x2028 || code === 0x2029 -} - -var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; - -var skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g; - -var ref = Object.prototype; -var hasOwnProperty = ref.hasOwnProperty; -var toString = ref.toString; - -// Checks if an object has a property. - -function has(obj, propName) { - return hasOwnProperty.call(obj, propName) -} - -var isArray = Array.isArray || (function (obj) { return ( - toString.call(obj) === "[object Array]" -); }); - -// These are used when `options.locations` is on, for the -// `startLoc` and `endLoc` properties. - -var Position = function Position(line, col) { - this.line = line; - this.column = col; -}; - -Position.prototype.offset = function offset (n) { - return new Position(this.line, this.column + n) -}; - -var SourceLocation = function SourceLocation(p, start, end) { - this.start = start; - this.end = end; - if (p.sourceFile !== null) { this.source = p.sourceFile; } -}; - -// The `getLineInfo` function is mostly useful when the -// `locations` option is off (for performance reasons) and you -// want to find the line/column position for a given character -// offset. `input` should be the code string that the offset refers -// into. - -function getLineInfo(input, offset) { - for (var line = 1, cur = 0;;) { - lineBreakG.lastIndex = cur; - var match = lineBreakG.exec(input); - if (match && match.index < offset) { - ++line; - cur = match.index + match[0].length; - } else { - return new Position(line, offset - cur) - } - } -} - -// A second optional argument can be given to further configure -// the parser process. These options are recognized: - -var defaultOptions = { - // `ecmaVersion` indicates the ECMAScript version to parse. Must - // be either 3, 5, 6 (2015), 7 (2016), or 8 (2017). This influences support - // for strict mode, the set of reserved words, and support for - // new syntax features. The default is 7. - ecmaVersion: 7, - // `sourceType` indicates the mode the code should be parsed in. - // Can be either `"script"` or `"module"`. This influences global - // strict mode and parsing of `import` and `export` declarations. - sourceType: "script", - // `onInsertedSemicolon` can be a callback that will be called - // when a semicolon is automatically inserted. It will be passed - // th position of the comma as an offset, and if `locations` is - // enabled, it is given the location as a `{line, column}` object - // as second argument. - onInsertedSemicolon: null, - // `onTrailingComma` is similar to `onInsertedSemicolon`, but for - // trailing commas. - onTrailingComma: null, - // By default, reserved words are only enforced if ecmaVersion >= 5. - // Set `allowReserved` to a boolean value to explicitly turn this on - // an off. When this option has the value "never", reserved words - // and keywords can also not be used as property names. - allowReserved: null, - // When enabled, a return at the top level is not considered an - // error. - allowReturnOutsideFunction: false, - // When enabled, import/export statements are not constrained to - // appearing at the top of the program. - allowImportExportEverywhere: false, - // When enabled, hashbang directive in the beginning of file - // is allowed and treated as a line comment. - allowHashBang: false, - // When `locations` is on, `loc` properties holding objects with - // `start` and `end` properties in `{line, column}` form (with - // line being 1-based and column 0-based) will be attached to the - // nodes. - locations: false, - // A function can be passed as `onToken` option, which will - // cause Acorn to call that function with object in the same - // format as tokens returned from `tokenizer().getToken()`. Note - // that you are not allowed to call the parser from the - // callback—that will corrupt its internal state. - onToken: null, - // A function can be passed as `onComment` option, which will - // cause Acorn to call that function with `(block, text, start, - // end)` parameters whenever a comment is skipped. `block` is a - // boolean indicating whether this is a block (`/* */`) comment, - // `text` is the content of the comment, and `start` and `end` are - // character offsets that denote the start and end of the comment. - // When the `locations` option is on, two more parameters are - // passed, the full `{line, column}` locations of the start and - // end of the comments. Note that you are not allowed to call the - // parser from the callback—that will corrupt its internal state. - onComment: null, - // Nodes have their start and end characters offsets recorded in - // `start` and `end` properties (directly on the node, rather than - // the `loc` object, which holds line/column data. To also add a - // [semi-standardized][range] `range` property holding a `[start, - // end]` array with the same numbers, set the `ranges` option to - // `true`. - // - // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678 - ranges: false, - // It is possible to parse multiple files into a single AST by - // passing the tree produced by parsing the first file as - // `program` option in subsequent parses. This will add the - // toplevel forms of the parsed file to the `Program` (top) node - // of an existing parse tree. - program: null, - // When `locations` is on, you can pass this to record the source - // file in every node's `loc` object. - sourceFile: null, - // This value, if given, is stored in every node, whether - // `locations` is on or off. - directSourceFile: null, - // When enabled, parenthesized expressions are represented by - // (non-standard) ParenthesizedExpression nodes - preserveParens: false, - plugins: {} -}; - -// Interpret and default an options object - -function getOptions(opts) { - var options = {}; - - for (var opt in defaultOptions) - { options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt]; } - - if (options.ecmaVersion >= 2015) - { options.ecmaVersion -= 2009; } - - if (options.allowReserved == null) - { options.allowReserved = options.ecmaVersion < 5; } - - if (isArray(options.onToken)) { - var tokens = options.onToken; - options.onToken = function (token) { return tokens.push(token); }; - } - if (isArray(options.onComment)) - { options.onComment = pushComment(options, options.onComment); } - - return options -} - -function pushComment(options, array) { - return function(block, text, start, end, startLoc, endLoc) { - var comment = { - type: block ? "Block" : "Line", - value: text, - start: start, - end: end - }; - if (options.locations) - { comment.loc = new SourceLocation(this, startLoc, endLoc); } - if (options.ranges) - { comment.range = [start, end]; } - array.push(comment); - } -} - -// Registered plugins -var plugins = {}; - -function keywordRegexp(words) { - return new RegExp("^(?:" + words.replace(/ /g, "|") + ")$") -} - -var Parser = function Parser(options, input, startPos) { - this.options = options = getOptions(options); - this.sourceFile = options.sourceFile; - this.keywords = keywordRegexp(keywords[options.ecmaVersion >= 6 ? 6 : 5]); - var reserved = ""; - if (!options.allowReserved) { - for (var v = options.ecmaVersion;; v--) - { if (reserved = reservedWords[v]) { break } } - if (options.sourceType == "module") { reserved += " await"; } - } - this.reservedWords = keywordRegexp(reserved); - var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict; - this.reservedWordsStrict = keywordRegexp(reservedStrict); - this.reservedWordsStrictBind = keywordRegexp(reservedStrict + " " + reservedWords.strictBind); - this.input = String(input); - - // Used to signal to callers of `readWord1` whether the word - // contained any escape sequences. This is needed because words with - // escape sequences must not be interpreted as keywords. - this.containsEsc = false; - - // Load plugins - this.loadPlugins(options.plugins); - - // Set up token state - - // The current position of the tokenizer in the input. - if (startPos) { - this.pos = startPos; - this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1; - this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length; - } else { - this.pos = this.lineStart = 0; - this.curLine = 1; - } - - // Properties of the current token: - // Its type - this.type = types.eof; - // For tokens that include more information than their type, the value - this.value = null; - // Its start and end offset - this.start = this.end = this.pos; - // And, if locations are used, the {line, column} object - // corresponding to those offsets - this.startLoc = this.endLoc = this.curPosition(); - - // Position information for the previous token - this.lastTokEndLoc = this.lastTokStartLoc = null; - this.lastTokStart = this.lastTokEnd = this.pos; - - // The context stack is used to superficially track syntactic - // context to predict whether a regular expression is allowed in a - // given position. - this.context = this.initialContext(); - this.exprAllowed = true; - - // Figure out if it's a module code. - this.inModule = options.sourceType === "module"; - this.strict = this.inModule || this.strictDirective(this.pos); - - // Used to signify the start of a potential arrow function - this.potentialArrowAt = -1; - - // Flags to track whether we are in a function, a generator, an async function. - this.inFunction = this.inGenerator = this.inAsync = false; - // Positions to delayed-check that yield/await does not exist in default parameters. - this.yieldPos = this.awaitPos = 0; - // Labels in scope. - this.labels = []; - - // If enabled, skip leading hashbang line. - if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === "#!") - { this.skipLineComment(2); } - - // Scope tracking for duplicate variable names (see scope.js) - this.scopeStack = []; - this.enterFunctionScope(); -}; - -// DEPRECATED Kept for backwards compatibility until 3.0 in case a plugin uses them -Parser.prototype.isKeyword = function isKeyword (word) { return this.keywords.test(word) }; -Parser.prototype.isReservedWord = function isReservedWord (word) { return this.reservedWords.test(word) }; - -Parser.prototype.extend = function extend (name, f) { - this[name] = f(this[name]); -}; - -Parser.prototype.loadPlugins = function loadPlugins (pluginConfigs) { - var this$1 = this; - - for (var name in pluginConfigs) { - var plugin = plugins[name]; - if (!plugin) { throw new Error("Plugin '" + name + "' not found") } - plugin(this$1, pluginConfigs[name]); - } -}; - -Parser.prototype.parse = function parse () { - var node = this.options.program || this.startNode(); - this.nextToken(); - return this.parseTopLevel(node) -}; - -var pp = Parser.prototype; - -// ## Parser utilities - -var literal = /^(?:'((?:\\.|[^'])*?)'|"((?:\\.|[^"])*?)"|;)/; -pp.strictDirective = function(start) { - var this$1 = this; - - for (;;) { - skipWhiteSpace.lastIndex = start; - start += skipWhiteSpace.exec(this$1.input)[0].length; - var match = literal.exec(this$1.input.slice(start)); - if (!match) { return false } - if ((match[1] || match[2]) == "use strict") { return true } - start += match[0].length; - } -}; - -// Predicate that tests whether the next token is of the given -// type, and if yes, consumes it as a side effect. - -pp.eat = function(type) { - if (this.type === type) { - this.next(); - return true - } else { - return false - } -}; - -// Tests whether parsed token is a contextual keyword. - -pp.isContextual = function(name) { - return this.type === types.name && this.value === name -}; - -// Consumes contextual keyword if possible. - -pp.eatContextual = function(name) { - return this.value === name && this.eat(types.name) -}; - -// Asserts that following token is given contextual keyword. - -pp.expectContextual = function(name) { - if (!this.eatContextual(name)) { this.unexpected(); } -}; - -// Test whether a semicolon can be inserted at the current position. - -pp.canInsertSemicolon = function() { - return this.type === types.eof || - this.type === types.braceR || - lineBreak.test(this.input.slice(this.lastTokEnd, this.start)) -}; - -pp.insertSemicolon = function() { - if (this.canInsertSemicolon()) { - if (this.options.onInsertedSemicolon) - { this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc); } - return true - } -}; - -// Consume a semicolon, or, failing that, see if we are allowed to -// pretend that there is a semicolon at this position. - -pp.semicolon = function() { - if (!this.eat(types.semi) && !this.insertSemicolon()) { this.unexpected(); } -}; - -pp.afterTrailingComma = function(tokType, notNext) { - if (this.type == tokType) { - if (this.options.onTrailingComma) - { this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc); } - if (!notNext) - { this.next(); } - return true - } -}; - -// Expect a token of a given type. If found, consume it, otherwise, -// raise an unexpected token error. - -pp.expect = function(type) { - this.eat(type) || this.unexpected(); -}; - -// Raise an unexpected token error. - -pp.unexpected = function(pos) { - this.raise(pos != null ? pos : this.start, "Unexpected token"); -}; - -function DestructuringErrors() { - this.shorthandAssign = - this.trailingComma = - this.parenthesizedAssign = - this.parenthesizedBind = - -1; -} - -pp.checkPatternErrors = function(refDestructuringErrors, isAssign) { - if (!refDestructuringErrors) { return } - if (refDestructuringErrors.trailingComma > -1) - { this.raiseRecoverable(refDestructuringErrors.trailingComma, "Comma is not permitted after the rest element"); } - var parens = isAssign ? refDestructuringErrors.parenthesizedAssign : refDestructuringErrors.parenthesizedBind; - if (parens > -1) { this.raiseRecoverable(parens, "Parenthesized pattern"); } -}; - -pp.checkExpressionErrors = function(refDestructuringErrors, andThrow) { - var pos = refDestructuringErrors ? refDestructuringErrors.shorthandAssign : -1; - if (!andThrow) { return pos >= 0 } - if (pos > -1) { this.raise(pos, "Shorthand property assignments are valid only in destructuring patterns"); } -}; - -pp.checkYieldAwaitInDefaultParams = function() { - if (this.yieldPos && (!this.awaitPos || this.yieldPos < this.awaitPos)) - { this.raise(this.yieldPos, "Yield expression cannot be a default value"); } - if (this.awaitPos) - { this.raise(this.awaitPos, "Await expression cannot be a default value"); } -}; - -pp.isSimpleAssignTarget = function(expr) { - if (expr.type === "ParenthesizedExpression") - { return this.isSimpleAssignTarget(expr.expression) } - return expr.type === "Identifier" || expr.type === "MemberExpression" -}; - -var pp$1 = Parser.prototype; - -// ### Statement parsing - -// Parse a program. Initializes the parser, reads any number of -// statements, and wraps them in a Program node. Optionally takes a -// `program` argument. If present, the statements will be appended -// to its body instead of creating a new node. - -pp$1.parseTopLevel = function(node) { - var this$1 = this; - - var exports = {}; - if (!node.body) { node.body = []; } - while (this.type !== types.eof) { - var stmt = this$1.parseStatement(true, true, exports); - node.body.push(stmt); - } - this.next(); - if (this.options.ecmaVersion >= 6) { - node.sourceType = this.options.sourceType; - } - return this.finishNode(node, "Program") -}; - -var loopLabel = {kind: "loop"}; -var switchLabel = {kind: "switch"}; - -pp$1.isLet = function() { - if (this.type !== types.name || this.options.ecmaVersion < 6 || this.value != "let") { return false } - skipWhiteSpace.lastIndex = this.pos; - var skip = skipWhiteSpace.exec(this.input); - var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next); - if (nextCh === 91 || nextCh == 123) { return true } // '{' and '[' - if (isIdentifierStart(nextCh, true)) { - var pos = next + 1; - while (isIdentifierChar(this.input.charCodeAt(pos), true)) { ++pos; } - var ident = this.input.slice(next, pos); - if (!this.isKeyword(ident)) { return true } - } - return false -}; - -// check 'async [no LineTerminator here] function' -// - 'async /*foo*/ function' is OK. -// - 'async /*\n*/ function' is invalid. -pp$1.isAsyncFunction = function() { - if (this.type !== types.name || this.options.ecmaVersion < 8 || this.value != "async") - { return false } - - skipWhiteSpace.lastIndex = this.pos; - var skip = skipWhiteSpace.exec(this.input); - var next = this.pos + skip[0].length; - return !lineBreak.test(this.input.slice(this.pos, next)) && - this.input.slice(next, next + 8) === "function" && - (next + 8 == this.input.length || !isIdentifierChar(this.input.charAt(next + 8))) -}; - -// Parse a single statement. -// -// If expecting a statement and finding a slash operator, parse a -// regular expression literal. This is to handle cases like -// `if (foo) /blah/.exec(foo)`, where looking at the previous token -// does not help. - -pp$1.parseStatement = function(declaration, topLevel, exports) { - var starttype = this.type, node = this.startNode(), kind; - - if (this.isLet()) { - starttype = types._var; - kind = "let"; - } - - // Most types of statements are recognized by the keyword they - // start with. Many are trivial to parse, some require a bit of - // complexity. - - switch (starttype) { - case types._break: case types._continue: return this.parseBreakContinueStatement(node, starttype.keyword) - case types._debugger: return this.parseDebuggerStatement(node) - case types._do: return this.parseDoStatement(node) - case types._for: return this.parseForStatement(node) - case types._function: - if (!declaration && this.options.ecmaVersion >= 6) { this.unexpected(); } - return this.parseFunctionStatement(node, false) - case types._class: - if (!declaration) { this.unexpected(); } - return this.parseClass(node, true) - case types._if: return this.parseIfStatement(node) - case types._return: return this.parseReturnStatement(node) - case types._switch: return this.parseSwitchStatement(node) - case types._throw: return this.parseThrowStatement(node) - case types._try: return this.parseTryStatement(node) - case types._const: case types._var: - kind = kind || this.value; - if (!declaration && kind != "var") { this.unexpected(); } - return this.parseVarStatement(node, kind) - case types._while: return this.parseWhileStatement(node) - case types._with: return this.parseWithStatement(node) - case types.braceL: return this.parseBlock() - case types.semi: return this.parseEmptyStatement(node) - case types._export: - case types._import: - if (!this.options.allowImportExportEverywhere) { - if (!topLevel) - { this.raise(this.start, "'import' and 'export' may only appear at the top level"); } - if (!this.inModule) - { this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'"); } - } - return starttype === types._import ? this.parseImport(node) : this.parseExport(node, exports) - - // If the statement does not start with a statement keyword or a - // brace, it's an ExpressionStatement or LabeledStatement. We - // simply start parsing an expression, and afterwards, if the - // next token is a colon and the expression was a simple - // Identifier node, we switch to interpreting it as a label. - default: - if (this.isAsyncFunction() && declaration) { - this.next(); - return this.parseFunctionStatement(node, true) - } - - var maybeName = this.value, expr = this.parseExpression(); - if (starttype === types.name && expr.type === "Identifier" && this.eat(types.colon)) - { return this.parseLabeledStatement(node, maybeName, expr) } - else { return this.parseExpressionStatement(node, expr) } - } -}; - -pp$1.parseBreakContinueStatement = function(node, keyword) { - var this$1 = this; - - var isBreak = keyword == "break"; - this.next(); - if (this.eat(types.semi) || this.insertSemicolon()) { node.label = null; } - else if (this.type !== types.name) { this.unexpected(); } - else { - node.label = this.parseIdent(); - this.semicolon(); - } - - // Verify that there is an actual destination to break or - // continue to. - var i = 0; - for (; i < this.labels.length; ++i) { - var lab = this$1.labels[i]; - if (node.label == null || lab.name === node.label.name) { - if (lab.kind != null && (isBreak || lab.kind === "loop")) { break } - if (node.label && isBreak) { break } - } - } - if (i === this.labels.length) { this.raise(node.start, "Unsyntactic " + keyword); } - return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement") -}; - -pp$1.parseDebuggerStatement = function(node) { - this.next(); - this.semicolon(); - return this.finishNode(node, "DebuggerStatement") -}; - -pp$1.parseDoStatement = function(node) { - this.next(); - this.labels.push(loopLabel); - node.body = this.parseStatement(false); - this.labels.pop(); - this.expect(types._while); - node.test = this.parseParenExpression(); - if (this.options.ecmaVersion >= 6) - { this.eat(types.semi); } - else - { this.semicolon(); } - return this.finishNode(node, "DoWhileStatement") -}; - -// Disambiguating between a `for` and a `for`/`in` or `for`/`of` -// loop is non-trivial. Basically, we have to parse the init `var` -// statement or expression, disallowing the `in` operator (see -// the second parameter to `parseExpression`), and then check -// whether the next token is `in` or `of`. When there is no init -// part (semicolon immediately after the opening parenthesis), it -// is a regular `for` loop. - -pp$1.parseForStatement = function(node) { - this.next(); - this.labels.push(loopLabel); - this.enterLexicalScope(); - this.expect(types.parenL); - if (this.type === types.semi) { return this.parseFor(node, null) } - var isLet = this.isLet(); - if (this.type === types._var || this.type === types._const || isLet) { - var init$1 = this.startNode(), kind = isLet ? "let" : this.value; - this.next(); - this.parseVar(init$1, true, kind); - this.finishNode(init$1, "VariableDeclaration"); - if ((this.type === types._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) && init$1.declarations.length === 1 && - !(kind !== "var" && init$1.declarations[0].init)) - { return this.parseForIn(node, init$1) } - return this.parseFor(node, init$1) - } - var refDestructuringErrors = new DestructuringErrors; - var init = this.parseExpression(true, refDestructuringErrors); - if (this.type === types._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) { - this.toAssignable(init); - this.checkLVal(init); - this.checkPatternErrors(refDestructuringErrors, true); - return this.parseForIn(node, init) - } else { - this.checkExpressionErrors(refDestructuringErrors, true); - } - return this.parseFor(node, init) -}; - -pp$1.parseFunctionStatement = function(node, isAsync) { - this.next(); - return this.parseFunction(node, true, false, isAsync) -}; - -pp$1.isFunction = function() { - return this.type === types._function || this.isAsyncFunction() -}; - -pp$1.parseIfStatement = function(node) { - this.next(); - node.test = this.parseParenExpression(); - // allow function declarations in branches, but only in non-strict mode - node.consequent = this.parseStatement(!this.strict && this.isFunction()); - node.alternate = this.eat(types._else) ? this.parseStatement(!this.strict && this.isFunction()) : null; - return this.finishNode(node, "IfStatement") -}; - -pp$1.parseReturnStatement = function(node) { - if (!this.inFunction && !this.options.allowReturnOutsideFunction) - { this.raise(this.start, "'return' outside of function"); } - this.next(); - - // In `return` (and `break`/`continue`), the keywords with - // optional arguments, we eagerly look for a semicolon or the - // possibility to insert one. - - if (this.eat(types.semi) || this.insertSemicolon()) { node.argument = null; } - else { node.argument = this.parseExpression(); this.semicolon(); } - return this.finishNode(node, "ReturnStatement") -}; - -pp$1.parseSwitchStatement = function(node) { - var this$1 = this; - - this.next(); - node.discriminant = this.parseParenExpression(); - node.cases = []; - this.expect(types.braceL); - this.labels.push(switchLabel); - this.enterLexicalScope(); - - // Statements under must be grouped (by label) in SwitchCase - // nodes. `cur` is used to keep the node that we are currently - // adding statements to. - - var cur; - for (var sawDefault = false; this.type != types.braceR;) { - if (this$1.type === types._case || this$1.type === types._default) { - var isCase = this$1.type === types._case; - if (cur) { this$1.finishNode(cur, "SwitchCase"); } - node.cases.push(cur = this$1.startNode()); - cur.consequent = []; - this$1.next(); - if (isCase) { - cur.test = this$1.parseExpression(); - } else { - if (sawDefault) { this$1.raiseRecoverable(this$1.lastTokStart, "Multiple default clauses"); } - sawDefault = true; - cur.test = null; - } - this$1.expect(types.colon); - } else { - if (!cur) { this$1.unexpected(); } - cur.consequent.push(this$1.parseStatement(true)); - } - } - this.exitLexicalScope(); - if (cur) { this.finishNode(cur, "SwitchCase"); } - this.next(); // Closing brace - this.labels.pop(); - return this.finishNode(node, "SwitchStatement") -}; - -pp$1.parseThrowStatement = function(node) { - this.next(); - if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start))) - { this.raise(this.lastTokEnd, "Illegal newline after throw"); } - node.argument = this.parseExpression(); - this.semicolon(); - return this.finishNode(node, "ThrowStatement") -}; - -// Reused empty array added for node fields that are always empty. - -var empty = []; - -pp$1.parseTryStatement = function(node) { - this.next(); - node.block = this.parseBlock(); - node.handler = null; - if (this.type === types._catch) { - var clause = this.startNode(); - this.next(); - this.expect(types.parenL); - clause.param = this.parseBindingAtom(); - this.enterLexicalScope(); - this.checkLVal(clause.param, "let"); - this.expect(types.parenR); - clause.body = this.parseBlock(false); - this.exitLexicalScope(); - node.handler = this.finishNode(clause, "CatchClause"); - } - node.finalizer = this.eat(types._finally) ? this.parseBlock() : null; - if (!node.handler && !node.finalizer) - { this.raise(node.start, "Missing catch or finally clause"); } - return this.finishNode(node, "TryStatement") -}; - -pp$1.parseVarStatement = function(node, kind) { - this.next(); - this.parseVar(node, false, kind); - this.semicolon(); - return this.finishNode(node, "VariableDeclaration") -}; - -pp$1.parseWhileStatement = function(node) { - this.next(); - node.test = this.parseParenExpression(); - this.labels.push(loopLabel); - node.body = this.parseStatement(false); - this.labels.pop(); - return this.finishNode(node, "WhileStatement") -}; - -pp$1.parseWithStatement = function(node) { - if (this.strict) { this.raise(this.start, "'with' in strict mode"); } - this.next(); - node.object = this.parseParenExpression(); - node.body = this.parseStatement(false); - return this.finishNode(node, "WithStatement") -}; - -pp$1.parseEmptyStatement = function(node) { - this.next(); - return this.finishNode(node, "EmptyStatement") -}; - -pp$1.parseLabeledStatement = function(node, maybeName, expr) { - var this$1 = this; - - for (var i$1 = 0, list = this$1.labels; i$1 < list.length; i$1 += 1) - { - var label = list[i$1]; - - if (label.name === maybeName) - { this$1.raise(expr.start, "Label '" + maybeName + "' is already declared"); - } } - var kind = this.type.isLoop ? "loop" : this.type === types._switch ? "switch" : null; - for (var i = this.labels.length - 1; i >= 0; i--) { - var label$1 = this$1.labels[i]; - if (label$1.statementStart == node.start) { - label$1.statementStart = this$1.start; - label$1.kind = kind; - } else { break } - } - this.labels.push({name: maybeName, kind: kind, statementStart: this.start}); - node.body = this.parseStatement(true); - if (node.body.type == "ClassDeclaration" || - node.body.type == "VariableDeclaration" && node.body.kind != "var" || - node.body.type == "FunctionDeclaration" && (this.strict || node.body.generator)) - { this.raiseRecoverable(node.body.start, "Invalid labeled declaration"); } - this.labels.pop(); - node.label = expr; - return this.finishNode(node, "LabeledStatement") -}; - -pp$1.parseExpressionStatement = function(node, expr) { - node.expression = expr; - this.semicolon(); - return this.finishNode(node, "ExpressionStatement") -}; - -// Parse a semicolon-enclosed block of statements, handling `"use -// strict"` declarations when `allowStrict` is true (used for -// function bodies). - -pp$1.parseBlock = function(createNewLexicalScope) { - var this$1 = this; - if ( createNewLexicalScope === void 0 ) createNewLexicalScope = true; - - var node = this.startNode(); - node.body = []; - this.expect(types.braceL); - if (createNewLexicalScope) { - this.enterLexicalScope(); - } - while (!this.eat(types.braceR)) { - var stmt = this$1.parseStatement(true); - node.body.push(stmt); - } - if (createNewLexicalScope) { - this.exitLexicalScope(); - } - return this.finishNode(node, "BlockStatement") -}; - -// Parse a regular `for` loop. The disambiguation code in -// `parseStatement` will already have parsed the init statement or -// expression. - -pp$1.parseFor = function(node, init) { - node.init = init; - this.expect(types.semi); - node.test = this.type === types.semi ? null : this.parseExpression(); - this.expect(types.semi); - node.update = this.type === types.parenR ? null : this.parseExpression(); - this.expect(types.parenR); - this.exitLexicalScope(); - node.body = this.parseStatement(false); - this.labels.pop(); - return this.finishNode(node, "ForStatement") -}; - -// Parse a `for`/`in` and `for`/`of` loop, which are almost -// same from parser's perspective. - -pp$1.parseForIn = function(node, init) { - var type = this.type === types._in ? "ForInStatement" : "ForOfStatement"; - this.next(); - node.left = init; - node.right = this.parseExpression(); - this.expect(types.parenR); - this.exitLexicalScope(); - node.body = this.parseStatement(false); - this.labels.pop(); - return this.finishNode(node, type) -}; - -// Parse a list of variable declarations. - -pp$1.parseVar = function(node, isFor, kind) { - var this$1 = this; - - node.declarations = []; - node.kind = kind; - for (;;) { - var decl = this$1.startNode(); - this$1.parseVarId(decl, kind); - if (this$1.eat(types.eq)) { - decl.init = this$1.parseMaybeAssign(isFor); - } else if (kind === "const" && !(this$1.type === types._in || (this$1.options.ecmaVersion >= 6 && this$1.isContextual("of")))) { - this$1.unexpected(); - } else if (decl.id.type != "Identifier" && !(isFor && (this$1.type === types._in || this$1.isContextual("of")))) { - this$1.raise(this$1.lastTokEnd, "Complex binding patterns require an initialization value"); - } else { - decl.init = null; - } - node.declarations.push(this$1.finishNode(decl, "VariableDeclarator")); - if (!this$1.eat(types.comma)) { break } - } - return node -}; - -pp$1.parseVarId = function(decl, kind) { - decl.id = this.parseBindingAtom(kind); - this.checkLVal(decl.id, kind, false); -}; - -// Parse a function declaration or literal (depending on the -// `isStatement` parameter). - -pp$1.parseFunction = function(node, isStatement, allowExpressionBody, isAsync) { - this.initFunction(node); - if (this.options.ecmaVersion >= 6 && !isAsync) - { node.generator = this.eat(types.star); } - if (this.options.ecmaVersion >= 8) - { node.async = !!isAsync; } - - if (isStatement) { - node.id = isStatement === "nullableID" && this.type != types.name ? null : this.parseIdent(); - if (node.id) { - this.checkLVal(node.id, "var"); - } - } - - var oldInGen = this.inGenerator, oldInAsync = this.inAsync, - oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction; - this.inGenerator = node.generator; - this.inAsync = node.async; - this.yieldPos = 0; - this.awaitPos = 0; - this.inFunction = true; - this.enterFunctionScope(); - - if (!isStatement) - { node.id = this.type == types.name ? this.parseIdent() : null; } - - this.parseFunctionParams(node); - this.parseFunctionBody(node, allowExpressionBody); - - this.inGenerator = oldInGen; - this.inAsync = oldInAsync; - this.yieldPos = oldYieldPos; - this.awaitPos = oldAwaitPos; - this.inFunction = oldInFunc; - return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression") -}; - -pp$1.parseFunctionParams = function(node) { - this.expect(types.parenL); - node.params = this.parseBindingList(types.parenR, false, this.options.ecmaVersion >= 8); - this.checkYieldAwaitInDefaultParams(); -}; - -// Parse a class declaration or literal (depending on the -// `isStatement` parameter). - -pp$1.parseClass = function(node, isStatement) { - var this$1 = this; - - this.next(); - - this.parseClassId(node, isStatement); - this.parseClassSuper(node); - var classBody = this.startNode(); - var hadConstructor = false; - classBody.body = []; - this.expect(types.braceL); - while (!this.eat(types.braceR)) { - if (this$1.eat(types.semi)) { continue } - var method = this$1.startNode(); - var isGenerator = this$1.eat(types.star); - var isAsync = false; - var isMaybeStatic = this$1.type === types.name && this$1.value === "static"; - this$1.parsePropertyName(method); - method.static = isMaybeStatic && this$1.type !== types.parenL; - if (method.static) { - if (isGenerator) { this$1.unexpected(); } - isGenerator = this$1.eat(types.star); - this$1.parsePropertyName(method); - } - if (this$1.options.ecmaVersion >= 8 && !isGenerator && !method.computed && - method.key.type === "Identifier" && method.key.name === "async" && this$1.type !== types.parenL && - !this$1.canInsertSemicolon()) { - isAsync = true; - this$1.parsePropertyName(method); - } - method.kind = "method"; - var isGetSet = false; - if (!method.computed) { - var key = method.key; - if (!isGenerator && !isAsync && key.type === "Identifier" && this$1.type !== types.parenL && (key.name === "get" || key.name === "set")) { - isGetSet = true; - method.kind = key.name; - key = this$1.parsePropertyName(method); - } - if (!method.static && (key.type === "Identifier" && key.name === "constructor" || - key.type === "Literal" && key.value === "constructor")) { - if (hadConstructor) { this$1.raise(key.start, "Duplicate constructor in the same class"); } - if (isGetSet) { this$1.raise(key.start, "Constructor can't have get/set modifier"); } - if (isGenerator) { this$1.raise(key.start, "Constructor can't be a generator"); } - if (isAsync) { this$1.raise(key.start, "Constructor can't be an async method"); } - method.kind = "constructor"; - hadConstructor = true; - } - } - this$1.parseClassMethod(classBody, method, isGenerator, isAsync); - if (isGetSet) { - var paramCount = method.kind === "get" ? 0 : 1; - if (method.value.params.length !== paramCount) { - var start = method.value.start; - if (method.kind === "get") - { this$1.raiseRecoverable(start, "getter should have no params"); } - else - { this$1.raiseRecoverable(start, "setter should have exactly one param"); } - } else { - if (method.kind === "set" && method.value.params[0].type === "RestElement") - { this$1.raiseRecoverable(method.value.params[0].start, "Setter cannot use rest params"); } - } - } - } - node.body = this.finishNode(classBody, "ClassBody"); - return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression") -}; - -pp$1.parseClassMethod = function(classBody, method, isGenerator, isAsync) { - method.value = this.parseMethod(isGenerator, isAsync); - classBody.body.push(this.finishNode(method, "MethodDefinition")); -}; - -pp$1.parseClassId = function(node, isStatement) { - node.id = this.type === types.name ? this.parseIdent() : isStatement === true ? this.unexpected() : null; -}; - -pp$1.parseClassSuper = function(node) { - node.superClass = this.eat(types._extends) ? this.parseExprSubscripts() : null; -}; - -// Parses module export declaration. - -pp$1.parseExport = function(node, exports) { - var this$1 = this; - - this.next(); - // export * from '...' - if (this.eat(types.star)) { - this.expectContextual("from"); - node.source = this.type === types.string ? this.parseExprAtom() : this.unexpected(); - this.semicolon(); - return this.finishNode(node, "ExportAllDeclaration") - } - if (this.eat(types._default)) { // export default ... - this.checkExport(exports, "default", this.lastTokStart); - var isAsync; - if (this.type === types._function || (isAsync = this.isAsyncFunction())) { - var fNode = this.startNode(); - this.next(); - if (isAsync) { this.next(); } - node.declaration = this.parseFunction(fNode, "nullableID", false, isAsync); - } else if (this.type === types._class) { - var cNode = this.startNode(); - node.declaration = this.parseClass(cNode, "nullableID"); - } else { - node.declaration = this.parseMaybeAssign(); - this.semicolon(); - } - return this.finishNode(node, "ExportDefaultDeclaration") - } - // export var|const|let|function|class ... - if (this.shouldParseExportStatement()) { - node.declaration = this.parseStatement(true); - if (node.declaration.type === "VariableDeclaration") - { this.checkVariableExport(exports, node.declaration.declarations); } - else - { this.checkExport(exports, node.declaration.id.name, node.declaration.id.start); } - node.specifiers = []; - node.source = null; - } else { // export { x, y as z } [from '...'] - node.declaration = null; - node.specifiers = this.parseExportSpecifiers(exports); - if (this.eatContextual("from")) { - node.source = this.type === types.string ? this.parseExprAtom() : this.unexpected(); - } else { - // check for keywords used as local names - for (var i = 0, list = node.specifiers; i < list.length; i += 1) { - var spec = list[i]; - - this$1.checkUnreserved(spec.local); - } - - node.source = null; - } - this.semicolon(); - } - return this.finishNode(node, "ExportNamedDeclaration") -}; - -pp$1.checkExport = function(exports, name, pos) { - if (!exports) { return } - if (has(exports, name)) - { this.raiseRecoverable(pos, "Duplicate export '" + name + "'"); } - exports[name] = true; -}; - -pp$1.checkPatternExport = function(exports, pat) { - var this$1 = this; - - var type = pat.type; - if (type == "Identifier") - { this.checkExport(exports, pat.name, pat.start); } - else if (type == "ObjectPattern") - { for (var i = 0, list = pat.properties; i < list.length; i += 1) - { - var prop = list[i]; - - this$1.checkPatternExport(exports, prop.value); - } } - else if (type == "ArrayPattern") - { for (var i$1 = 0, list$1 = pat.elements; i$1 < list$1.length; i$1 += 1) { - var elt = list$1[i$1]; - - if (elt) { this$1.checkPatternExport(exports, elt); } - } } - else if (type == "AssignmentPattern") - { this.checkPatternExport(exports, pat.left); } - else if (type == "ParenthesizedExpression") - { this.checkPatternExport(exports, pat.expression); } -}; - -pp$1.checkVariableExport = function(exports, decls) { - var this$1 = this; - - if (!exports) { return } - for (var i = 0, list = decls; i < list.length; i += 1) - { - var decl = list[i]; - - this$1.checkPatternExport(exports, decl.id); - } -}; - -pp$1.shouldParseExportStatement = function() { - return this.type.keyword === "var" || - this.type.keyword === "const" || - this.type.keyword === "class" || - this.type.keyword === "function" || - this.isLet() || - this.isAsyncFunction() -}; - -// Parses a comma-separated list of module exports. - -pp$1.parseExportSpecifiers = function(exports) { - var this$1 = this; - - var nodes = [], first = true; - // export { x, y as z } [from '...'] - this.expect(types.braceL); - while (!this.eat(types.braceR)) { - if (!first) { - this$1.expect(types.comma); - if (this$1.afterTrailingComma(types.braceR)) { break } - } else { first = false; } - - var node = this$1.startNode(); - node.local = this$1.parseIdent(true); - node.exported = this$1.eatContextual("as") ? this$1.parseIdent(true) : node.local; - this$1.checkExport(exports, node.exported.name, node.exported.start); - nodes.push(this$1.finishNode(node, "ExportSpecifier")); - } - return nodes -}; - -// Parses import declaration. - -pp$1.parseImport = function(node) { - this.next(); - // import '...' - if (this.type === types.string) { - node.specifiers = empty; - node.source = this.parseExprAtom(); - } else { - node.specifiers = this.parseImportSpecifiers(); - this.expectContextual("from"); - node.source = this.type === types.string ? this.parseExprAtom() : this.unexpected(); - } - this.semicolon(); - return this.finishNode(node, "ImportDeclaration") -}; - -// Parses a comma-separated list of module imports. - -pp$1.parseImportSpecifiers = function() { - var this$1 = this; - - var nodes = [], first = true; - if (this.type === types.name) { - // import defaultObj, { x, y as z } from '...' - var node = this.startNode(); - node.local = this.parseIdent(); - this.checkLVal(node.local, "let"); - nodes.push(this.finishNode(node, "ImportDefaultSpecifier")); - if (!this.eat(types.comma)) { return nodes } - } - if (this.type === types.star) { - var node$1 = this.startNode(); - this.next(); - this.expectContextual("as"); - node$1.local = this.parseIdent(); - this.checkLVal(node$1.local, "let"); - nodes.push(this.finishNode(node$1, "ImportNamespaceSpecifier")); - return nodes - } - this.expect(types.braceL); - while (!this.eat(types.braceR)) { - if (!first) { - this$1.expect(types.comma); - if (this$1.afterTrailingComma(types.braceR)) { break } - } else { first = false; } - - var node$2 = this$1.startNode(); - node$2.imported = this$1.parseIdent(true); - if (this$1.eatContextual("as")) { - node$2.local = this$1.parseIdent(); - } else { - this$1.checkUnreserved(node$2.imported); - node$2.local = node$2.imported; - } - this$1.checkLVal(node$2.local, "let"); - nodes.push(this$1.finishNode(node$2, "ImportSpecifier")); - } - return nodes -}; - -var pp$2 = Parser.prototype; - -// Convert existing expression atom to assignable pattern -// if possible. - -pp$2.toAssignable = function(node, isBinding) { - var this$1 = this; - - if (this.options.ecmaVersion >= 6 && node) { - switch (node.type) { - case "Identifier": - if (this.inAsync && node.name === "await") - { this.raise(node.start, "Can not use 'await' as identifier inside an async function"); } - break - - case "ObjectPattern": - case "ArrayPattern": - break - - case "ObjectExpression": - node.type = "ObjectPattern"; - for (var i = 0, list = node.properties; i < list.length; i += 1) { - var prop = list[i]; - - if (prop.kind !== "init") { this$1.raise(prop.key.start, "Object pattern can't contain getter or setter"); } - this$1.toAssignable(prop.value, isBinding); - } - break - - case "ArrayExpression": - node.type = "ArrayPattern"; - this.toAssignableList(node.elements, isBinding); - break - - case "AssignmentExpression": - if (node.operator === "=") { - node.type = "AssignmentPattern"; - delete node.operator; - this.toAssignable(node.left, isBinding); - // falls through to AssignmentPattern - } else { - this.raise(node.left.end, "Only '=' operator can be used for specifying default value."); - break - } - - case "AssignmentPattern": - break - - case "ParenthesizedExpression": - this.toAssignable(node.expression, isBinding); - break - - case "MemberExpression": - if (!isBinding) { break } - - default: - this.raise(node.start, "Assigning to rvalue"); - } - } - return node -}; - -// Convert list of expression atoms to binding list. - -pp$2.toAssignableList = function(exprList, isBinding) { - var this$1 = this; - - var end = exprList.length; - if (end) { - var last = exprList[end - 1]; - if (last && last.type == "RestElement") { - --end; - } else if (last && last.type == "SpreadElement") { - last.type = "RestElement"; - var arg = last.argument; - this.toAssignable(arg, isBinding); - --end; - } - - if (this.options.ecmaVersion === 6 && isBinding && last && last.type === "RestElement" && last.argument.type !== "Identifier") - { this.unexpected(last.argument.start); } - } - for (var i = 0; i < end; i++) { - var elt = exprList[i]; - if (elt) { this$1.toAssignable(elt, isBinding); } - } - return exprList -}; - -// Parses spread element. - -pp$2.parseSpread = function(refDestructuringErrors) { - var node = this.startNode(); - this.next(); - node.argument = this.parseMaybeAssign(false, refDestructuringErrors); - return this.finishNode(node, "SpreadElement") -}; - -pp$2.parseRestBinding = function() { - var node = this.startNode(); - this.next(); - - // RestElement inside of a function parameter must be an identifier - if (this.options.ecmaVersion === 6 && this.type !== types.name) - { this.unexpected(); } - - node.argument = this.parseBindingAtom(); - - return this.finishNode(node, "RestElement") -}; - -// Parses lvalue (assignable) atom. - -pp$2.parseBindingAtom = function() { - if (this.options.ecmaVersion < 6) { return this.parseIdent() } - switch (this.type) { - case types.name: - return this.parseIdent() - - case types.bracketL: - var node = this.startNode(); - this.next(); - node.elements = this.parseBindingList(types.bracketR, true, true); - return this.finishNode(node, "ArrayPattern") - - case types.braceL: - return this.parseObj(true) - - default: - this.unexpected(); - } -}; - -pp$2.parseBindingList = function(close, allowEmpty, allowTrailingComma) { - var this$1 = this; - - var elts = [], first = true; - while (!this.eat(close)) { - if (first) { first = false; } - else { this$1.expect(types.comma); } - if (allowEmpty && this$1.type === types.comma) { - elts.push(null); - } else if (allowTrailingComma && this$1.afterTrailingComma(close)) { - break - } else if (this$1.type === types.ellipsis) { - var rest = this$1.parseRestBinding(); - this$1.parseBindingListItem(rest); - elts.push(rest); - if (this$1.type === types.comma) { this$1.raise(this$1.start, "Comma is not permitted after the rest element"); } - this$1.expect(close); - break - } else { - var elem = this$1.parseMaybeDefault(this$1.start, this$1.startLoc); - this$1.parseBindingListItem(elem); - elts.push(elem); - } - } - return elts -}; - -pp$2.parseBindingListItem = function(param) { - return param -}; - -// Parses assignment pattern around given atom if possible. - -pp$2.parseMaybeDefault = function(startPos, startLoc, left) { - left = left || this.parseBindingAtom(); - if (this.options.ecmaVersion < 6 || !this.eat(types.eq)) { return left } - var node = this.startNodeAt(startPos, startLoc); - node.left = left; - node.right = this.parseMaybeAssign(); - return this.finishNode(node, "AssignmentPattern") -}; - -// Verify that a node is an lval — something that can be assigned -// to. -// bindingType can be either: -// 'var' indicating that the lval creates a 'var' binding -// 'let' indicating that the lval creates a lexical ('let' or 'const') binding -// 'none' indicating that the binding should be checked for illegal identifiers, but not for duplicate references - -pp$2.checkLVal = function(expr, bindingType, checkClashes) { - var this$1 = this; - - switch (expr.type) { - case "Identifier": - if (this.strict && this.reservedWordsStrictBind.test(expr.name)) - { this.raiseRecoverable(expr.start, (bindingType ? "Binding " : "Assigning to ") + expr.name + " in strict mode"); } - if (checkClashes) { - if (has(checkClashes, expr.name)) - { this.raiseRecoverable(expr.start, "Argument name clash"); } - checkClashes[expr.name] = true; - } - if (bindingType && bindingType !== "none") { - if ( - bindingType === "var" && !this.canDeclareVarName(expr.name) || - bindingType !== "var" && !this.canDeclareLexicalName(expr.name) - ) { - this.raiseRecoverable(expr.start, ("Identifier '" + (expr.name) + "' has already been declared")); - } - if (bindingType === "var") { - this.declareVarName(expr.name); - } else { - this.declareLexicalName(expr.name); - } - } - break - - case "MemberExpression": - if (bindingType) { this.raiseRecoverable(expr.start, (bindingType ? "Binding" : "Assigning to") + " member expression"); } - break - - case "ObjectPattern": - for (var i = 0, list = expr.properties; i < list.length; i += 1) - { - var prop = list[i]; - - this$1.checkLVal(prop.value, bindingType, checkClashes); - } - break - - case "ArrayPattern": - for (var i$1 = 0, list$1 = expr.elements; i$1 < list$1.length; i$1 += 1) { - var elem = list$1[i$1]; - - if (elem) { this$1.checkLVal(elem, bindingType, checkClashes); } - } - break - - case "AssignmentPattern": - this.checkLVal(expr.left, bindingType, checkClashes); - break - - case "RestElement": - this.checkLVal(expr.argument, bindingType, checkClashes); - break - - case "ParenthesizedExpression": - this.checkLVal(expr.expression, bindingType, checkClashes); - break - - default: - this.raise(expr.start, (bindingType ? "Binding" : "Assigning to") + " rvalue"); - } -}; - -// A recursive descent parser operates by defining functions for all -// syntactic elements, and recursively calling those, each function -// advancing the input stream and returning an AST node. Precedence -// of constructs (for example, the fact that `!x[1]` means `!(x[1])` -// instead of `(!x)[1]` is handled by the fact that the parser -// function that parses unary prefix operators is called first, and -// in turn calls the function that parses `[]` subscripts — that -// way, it'll receive the node for `x[1]` already parsed, and wraps -// *that* in the unary operator node. -// -// Acorn uses an [operator precedence parser][opp] to handle binary -// operator precedence, because it is much more compact than using -// the technique outlined above, which uses different, nesting -// functions to specify precedence, for all of the ten binary -// precedence levels that JavaScript defines. -// -// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser - -var pp$3 = Parser.prototype; - -// Check if property name clashes with already added. -// Object/class getters and setters are not allowed to clash — -// either with each other or with an init property — and in -// strict mode, init properties are also not allowed to be repeated. - -pp$3.checkPropClash = function(prop, propHash) { - if (this.options.ecmaVersion >= 6 && (prop.computed || prop.method || prop.shorthand)) - { return } - var key = prop.key; - var name; - switch (key.type) { - case "Identifier": name = key.name; break - case "Literal": name = String(key.value); break - default: return - } - var kind = prop.kind; - if (this.options.ecmaVersion >= 6) { - if (name === "__proto__" && kind === "init") { - if (propHash.proto) { this.raiseRecoverable(key.start, "Redefinition of __proto__ property"); } - propHash.proto = true; - } - return - } - name = "$" + name; - var other = propHash[name]; - if (other) { - var redefinition; - if (kind === "init") { - redefinition = this.strict && other.init || other.get || other.set; - } else { - redefinition = other.init || other[kind]; - } - if (redefinition) - { this.raiseRecoverable(key.start, "Redefinition of property"); } - } else { - other = propHash[name] = { - init: false, - get: false, - set: false - }; - } - other[kind] = true; -}; - -// ### Expression parsing - -// These nest, from the most general expression type at the top to -// 'atomic', nondivisible expression types at the bottom. Most of -// the functions will simply let the function(s) below them parse, -// and, *if* the syntactic construct they handle is present, wrap -// the AST node that the inner parser gave them in another node. - -// Parse a full expression. The optional arguments are used to -// forbid the `in` operator (in for loops initalization expressions) -// and provide reference for storing '=' operator inside shorthand -// property assignment in contexts where both object expression -// and object pattern might appear (so it's possible to raise -// delayed syntax error at correct position). - -pp$3.parseExpression = function(noIn, refDestructuringErrors) { - var this$1 = this; - - var startPos = this.start, startLoc = this.startLoc; - var expr = this.parseMaybeAssign(noIn, refDestructuringErrors); - if (this.type === types.comma) { - var node = this.startNodeAt(startPos, startLoc); - node.expressions = [expr]; - while (this.eat(types.comma)) { node.expressions.push(this$1.parseMaybeAssign(noIn, refDestructuringErrors)); } - return this.finishNode(node, "SequenceExpression") - } - return expr -}; - -// Parse an assignment expression. This includes applications of -// operators like `+=`. - -pp$3.parseMaybeAssign = function(noIn, refDestructuringErrors, afterLeftParse) { - if (this.inGenerator && this.isContextual("yield")) { return this.parseYield() } - - var ownDestructuringErrors = false, oldParenAssign = -1, oldTrailingComma = -1; - if (refDestructuringErrors) { - oldParenAssign = refDestructuringErrors.parenthesizedAssign; - oldTrailingComma = refDestructuringErrors.trailingComma; - refDestructuringErrors.parenthesizedAssign = refDestructuringErrors.trailingComma = -1; - } else { - refDestructuringErrors = new DestructuringErrors; - ownDestructuringErrors = true; - } - - var startPos = this.start, startLoc = this.startLoc; - if (this.type == types.parenL || this.type == types.name) - { this.potentialArrowAt = this.start; } - var left = this.parseMaybeConditional(noIn, refDestructuringErrors); - if (afterLeftParse) { left = afterLeftParse.call(this, left, startPos, startLoc); } - if (this.type.isAssign) { - this.checkPatternErrors(refDestructuringErrors, true); - if (!ownDestructuringErrors) { DestructuringErrors.call(refDestructuringErrors); } - var node = this.startNodeAt(startPos, startLoc); - node.operator = this.value; - node.left = this.type === types.eq ? this.toAssignable(left) : left; - refDestructuringErrors.shorthandAssign = -1; // reset because shorthand default was used correctly - this.checkLVal(left); - this.next(); - node.right = this.parseMaybeAssign(noIn); - return this.finishNode(node, "AssignmentExpression") - } else { - if (ownDestructuringErrors) { this.checkExpressionErrors(refDestructuringErrors, true); } - } - if (oldParenAssign > -1) { refDestructuringErrors.parenthesizedAssign = oldParenAssign; } - if (oldTrailingComma > -1) { refDestructuringErrors.trailingComma = oldTrailingComma; } - return left -}; - -// Parse a ternary conditional (`?:`) operator. - -pp$3.parseMaybeConditional = function(noIn, refDestructuringErrors) { - var startPos = this.start, startLoc = this.startLoc; - var expr = this.parseExprOps(noIn, refDestructuringErrors); - if (this.checkExpressionErrors(refDestructuringErrors)) { return expr } - if (this.eat(types.question)) { - var node = this.startNodeAt(startPos, startLoc); - node.test = expr; - node.consequent = this.parseMaybeAssign(); - this.expect(types.colon); - node.alternate = this.parseMaybeAssign(noIn); - return this.finishNode(node, "ConditionalExpression") - } - return expr -}; - -// Start the precedence parser. - -pp$3.parseExprOps = function(noIn, refDestructuringErrors) { - var startPos = this.start, startLoc = this.startLoc; - var expr = this.parseMaybeUnary(refDestructuringErrors, false); - if (this.checkExpressionErrors(refDestructuringErrors)) { return expr } - return expr.start == startPos && expr.type === "ArrowFunctionExpression" ? expr : this.parseExprOp(expr, startPos, startLoc, -1, noIn) -}; - -// Parse binary operators with the operator precedence parsing -// algorithm. `left` is the left-hand side of the operator. -// `minPrec` provides context that allows the function to stop and -// defer further parser to one of its callers when it encounters an -// operator that has a lower precedence than the set it is parsing. - -pp$3.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, noIn) { - var prec = this.type.binop; - if (prec != null && (!noIn || this.type !== types._in)) { - if (prec > minPrec) { - var logical = this.type === types.logicalOR || this.type === types.logicalAND; - var op = this.value; - this.next(); - var startPos = this.start, startLoc = this.startLoc; - var right = this.parseExprOp(this.parseMaybeUnary(null, false), startPos, startLoc, prec, noIn); - var node = this.buildBinary(leftStartPos, leftStartLoc, left, right, op, logical); - return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn) - } - } - return left -}; - -pp$3.buildBinary = function(startPos, startLoc, left, right, op, logical) { - var node = this.startNodeAt(startPos, startLoc); - node.left = left; - node.operator = op; - node.right = right; - return this.finishNode(node, logical ? "LogicalExpression" : "BinaryExpression") -}; - -// Parse unary operators, both prefix and postfix. - -pp$3.parseMaybeUnary = function(refDestructuringErrors, sawUnary) { - var this$1 = this; - - var startPos = this.start, startLoc = this.startLoc, expr; - if (this.inAsync && this.isContextual("await")) { - expr = this.parseAwait(refDestructuringErrors); - sawUnary = true; - } else if (this.type.prefix) { - var node = this.startNode(), update = this.type === types.incDec; - node.operator = this.value; - node.prefix = true; - this.next(); - node.argument = this.parseMaybeUnary(null, true); - this.checkExpressionErrors(refDestructuringErrors, true); - if (update) { this.checkLVal(node.argument); } - else if (this.strict && node.operator === "delete" && - node.argument.type === "Identifier") - { this.raiseRecoverable(node.start, "Deleting local variable in strict mode"); } - else { sawUnary = true; } - expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression"); - } else { - expr = this.parseExprSubscripts(refDestructuringErrors); - if (this.checkExpressionErrors(refDestructuringErrors)) { return expr } - while (this.type.postfix && !this.canInsertSemicolon()) { - var node$1 = this$1.startNodeAt(startPos, startLoc); - node$1.operator = this$1.value; - node$1.prefix = false; - node$1.argument = expr; - this$1.checkLVal(expr); - this$1.next(); - expr = this$1.finishNode(node$1, "UpdateExpression"); - } - } - - if (!sawUnary && this.eat(types.starstar)) - { return this.buildBinary(startPos, startLoc, expr, this.parseMaybeUnary(null, false), "**", false) } - else - { return expr } -}; - -// Parse call, dot, and `[]`-subscript expressions. - -pp$3.parseExprSubscripts = function(refDestructuringErrors) { - var startPos = this.start, startLoc = this.startLoc; - var expr = this.parseExprAtom(refDestructuringErrors); - var skipArrowSubscripts = expr.type === "ArrowFunctionExpression" && this.input.slice(this.lastTokStart, this.lastTokEnd) !== ")"; - if (this.checkExpressionErrors(refDestructuringErrors) || skipArrowSubscripts) { return expr } - var result = this.parseSubscripts(expr, startPos, startLoc); - if (refDestructuringErrors && result.type === "MemberExpression") { - if (refDestructuringErrors.parenthesizedAssign >= result.start) { refDestructuringErrors.parenthesizedAssign = -1; } - if (refDestructuringErrors.parenthesizedBind >= result.start) { refDestructuringErrors.parenthesizedBind = -1; } - } - return result -}; - -pp$3.parseSubscripts = function(base, startPos, startLoc, noCalls) { - var this$1 = this; - - var maybeAsyncArrow = this.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" && - this.lastTokEnd == base.end && !this.canInsertSemicolon(); - for (var computed = (void 0);;) { - if ((computed = this$1.eat(types.bracketL)) || this$1.eat(types.dot)) { - var node = this$1.startNodeAt(startPos, startLoc); - node.object = base; - node.property = computed ? this$1.parseExpression() : this$1.parseIdent(true); - node.computed = !!computed; - if (computed) { this$1.expect(types.bracketR); } - base = this$1.finishNode(node, "MemberExpression"); - } else if (!noCalls && this$1.eat(types.parenL)) { - var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this$1.yieldPos, oldAwaitPos = this$1.awaitPos; - this$1.yieldPos = 0; - this$1.awaitPos = 0; - var exprList = this$1.parseExprList(types.parenR, this$1.options.ecmaVersion >= 8, false, refDestructuringErrors); - if (maybeAsyncArrow && !this$1.canInsertSemicolon() && this$1.eat(types.arrow)) { - this$1.checkPatternErrors(refDestructuringErrors, false); - this$1.checkYieldAwaitInDefaultParams(); - this$1.yieldPos = oldYieldPos; - this$1.awaitPos = oldAwaitPos; - return this$1.parseArrowExpression(this$1.startNodeAt(startPos, startLoc), exprList, true) - } - this$1.checkExpressionErrors(refDestructuringErrors, true); - this$1.yieldPos = oldYieldPos || this$1.yieldPos; - this$1.awaitPos = oldAwaitPos || this$1.awaitPos; - var node$1 = this$1.startNodeAt(startPos, startLoc); - node$1.callee = base; - node$1.arguments = exprList; - base = this$1.finishNode(node$1, "CallExpression"); - } else if (this$1.type === types.backQuote) { - var node$2 = this$1.startNodeAt(startPos, startLoc); - node$2.tag = base; - node$2.quasi = this$1.parseTemplate({isTagged: true}); - base = this$1.finishNode(node$2, "TaggedTemplateExpression"); - } else { - return base - } - } -}; - -// Parse an atomic expression — either a single token that is an -// expression, an expression started by a keyword like `function` or -// `new`, or an expression wrapped in punctuation like `()`, `[]`, -// or `{}`. - -pp$3.parseExprAtom = function(refDestructuringErrors) { - var node, canBeArrow = this.potentialArrowAt == this.start; - switch (this.type) { - case types._super: - if (!this.inFunction) - { this.raise(this.start, "'super' outside of function or class"); } - - case types._this: - var type = this.type === types._this ? "ThisExpression" : "Super"; - node = this.startNode(); - this.next(); - return this.finishNode(node, type) - - case types.name: - var startPos = this.start, startLoc = this.startLoc; - var id = this.parseIdent(this.type !== types.name); - if (this.options.ecmaVersion >= 8 && id.name === "async" && !this.canInsertSemicolon() && this.eat(types._function)) - { return this.parseFunction(this.startNodeAt(startPos, startLoc), false, false, true) } - if (canBeArrow && !this.canInsertSemicolon()) { - if (this.eat(types.arrow)) - { return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], false) } - if (this.options.ecmaVersion >= 8 && id.name === "async" && this.type === types.name) { - id = this.parseIdent(); - if (this.canInsertSemicolon() || !this.eat(types.arrow)) - { this.unexpected(); } - return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], true) - } - } - return id - - case types.regexp: - var value = this.value; - node = this.parseLiteral(value.value); - node.regex = {pattern: value.pattern, flags: value.flags}; - return node - - case types.num: case types.string: - return this.parseLiteral(this.value) - - case types._null: case types._true: case types._false: - node = this.startNode(); - node.value = this.type === types._null ? null : this.type === types._true; - node.raw = this.type.keyword; - this.next(); - return this.finishNode(node, "Literal") - - case types.parenL: - var start = this.start, expr = this.parseParenAndDistinguishExpression(canBeArrow); - if (refDestructuringErrors) { - if (refDestructuringErrors.parenthesizedAssign < 0 && !this.isSimpleAssignTarget(expr)) - { refDestructuringErrors.parenthesizedAssign = start; } - if (refDestructuringErrors.parenthesizedBind < 0) - { refDestructuringErrors.parenthesizedBind = start; } - } - return expr - - case types.bracketL: - node = this.startNode(); - this.next(); - node.elements = this.parseExprList(types.bracketR, true, true, refDestructuringErrors); - return this.finishNode(node, "ArrayExpression") - - case types.braceL: - return this.parseObj(false, refDestructuringErrors) - - case types._function: - node = this.startNode(); - this.next(); - return this.parseFunction(node, false) - - case types._class: - return this.parseClass(this.startNode(), false) - - case types._new: - return this.parseNew() - - case types.backQuote: - return this.parseTemplate() - - default: - this.unexpected(); - } -}; - -pp$3.parseLiteral = function(value) { - var node = this.startNode(); - node.value = value; - node.raw = this.input.slice(this.start, this.end); - this.next(); - return this.finishNode(node, "Literal") -}; - -pp$3.parseParenExpression = function() { - this.expect(types.parenL); - var val = this.parseExpression(); - this.expect(types.parenR); - return val -}; - -pp$3.parseParenAndDistinguishExpression = function(canBeArrow) { - var this$1 = this; - - var startPos = this.start, startLoc = this.startLoc, val, allowTrailingComma = this.options.ecmaVersion >= 8; - if (this.options.ecmaVersion >= 6) { - this.next(); - - var innerStartPos = this.start, innerStartLoc = this.startLoc; - var exprList = [], first = true, lastIsComma = false; - var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, spreadStart, innerParenStart; - this.yieldPos = 0; - this.awaitPos = 0; - while (this.type !== types.parenR) { - first ? first = false : this$1.expect(types.comma); - if (allowTrailingComma && this$1.afterTrailingComma(types.parenR, true)) { - lastIsComma = true; - break - } else if (this$1.type === types.ellipsis) { - spreadStart = this$1.start; - exprList.push(this$1.parseParenItem(this$1.parseRestBinding())); - if (this$1.type === types.comma) { this$1.raise(this$1.start, "Comma is not permitted after the rest element"); } - break - } else { - if (this$1.type === types.parenL && !innerParenStart) { - innerParenStart = this$1.start; - } - exprList.push(this$1.parseMaybeAssign(false, refDestructuringErrors, this$1.parseParenItem)); - } - } - var innerEndPos = this.start, innerEndLoc = this.startLoc; - this.expect(types.parenR); - - if (canBeArrow && !this.canInsertSemicolon() && this.eat(types.arrow)) { - this.checkPatternErrors(refDestructuringErrors, false); - this.checkYieldAwaitInDefaultParams(); - if (innerParenStart) { this.unexpected(innerParenStart); } - this.yieldPos = oldYieldPos; - this.awaitPos = oldAwaitPos; - return this.parseParenArrowList(startPos, startLoc, exprList) - } - - if (!exprList.length || lastIsComma) { this.unexpected(this.lastTokStart); } - if (spreadStart) { this.unexpected(spreadStart); } - this.checkExpressionErrors(refDestructuringErrors, true); - this.yieldPos = oldYieldPos || this.yieldPos; - this.awaitPos = oldAwaitPos || this.awaitPos; - - if (exprList.length > 1) { - val = this.startNodeAt(innerStartPos, innerStartLoc); - val.expressions = exprList; - this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc); - } else { - val = exprList[0]; - } - } else { - val = this.parseParenExpression(); - } - - if (this.options.preserveParens) { - var par = this.startNodeAt(startPos, startLoc); - par.expression = val; - return this.finishNode(par, "ParenthesizedExpression") - } else { - return val - } -}; - -pp$3.parseParenItem = function(item) { - return item -}; - -pp$3.parseParenArrowList = function(startPos, startLoc, exprList) { - return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList) -}; - -// New's precedence is slightly tricky. It must allow its argument to -// be a `[]` or dot subscript expression, but not a call — at least, -// not without wrapping it in parentheses. Thus, it uses the noCalls -// argument to parseSubscripts to prevent it from consuming the -// argument list. - -var empty$1 = []; - -pp$3.parseNew = function() { - var node = this.startNode(); - var meta = this.parseIdent(true); - if (this.options.ecmaVersion >= 6 && this.eat(types.dot)) { - node.meta = meta; - node.property = this.parseIdent(true); - if (node.property.name !== "target") - { this.raiseRecoverable(node.property.start, "The only valid meta property for new is new.target"); } - if (!this.inFunction) - { this.raiseRecoverable(node.start, "new.target can only be used in functions"); } - return this.finishNode(node, "MetaProperty") - } - var startPos = this.start, startLoc = this.startLoc; - node.callee = this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true); - if (this.eat(types.parenL)) { node.arguments = this.parseExprList(types.parenR, this.options.ecmaVersion >= 8, false); } - else { node.arguments = empty$1; } - return this.finishNode(node, "NewExpression") -}; - -// Parse template expression. - -pp$3.parseTemplateElement = function(ref) { - var isTagged = ref.isTagged; - - var elem = this.startNode(); - if (this.type === types.invalidTemplate) { - if (!isTagged) { - this.raiseRecoverable(this.start, "Bad escape sequence in untagged template literal"); - } - elem.value = { - raw: this.value, - cooked: null - }; - } else { - elem.value = { - raw: this.input.slice(this.start, this.end).replace(/\r\n?/g, "\n"), - cooked: this.value - }; - } - this.next(); - elem.tail = this.type === types.backQuote; - return this.finishNode(elem, "TemplateElement") -}; - -pp$3.parseTemplate = function(ref) { - var this$1 = this; - if ( ref === void 0 ) ref = {}; - var isTagged = ref.isTagged; if ( isTagged === void 0 ) isTagged = false; - - var node = this.startNode(); - this.next(); - node.expressions = []; - var curElt = this.parseTemplateElement({isTagged: isTagged}); - node.quasis = [curElt]; - while (!curElt.tail) { - this$1.expect(types.dollarBraceL); - node.expressions.push(this$1.parseExpression()); - this$1.expect(types.braceR); - node.quasis.push(curElt = this$1.parseTemplateElement({isTagged: isTagged})); - } - this.next(); - return this.finishNode(node, "TemplateLiteral") -}; - -// Parse an object literal or binding pattern. - -pp$3.isAsyncProp = function(prop) { - return !prop.computed && prop.key.type === "Identifier" && prop.key.name === "async" && - (this.type === types.name || this.type === types.num || this.type === types.string || this.type === types.bracketL || this.type.keyword) && - !lineBreak.test(this.input.slice(this.lastTokEnd, this.start)) -}; - -pp$3.parseObj = function(isPattern, refDestructuringErrors) { - var this$1 = this; - - var node = this.startNode(), first = true, propHash = {}; - node.properties = []; - this.next(); - while (!this.eat(types.braceR)) { - if (!first) { - this$1.expect(types.comma); - if (this$1.afterTrailingComma(types.braceR)) { break } - } else { first = false; } - - var prop = this$1.startNode(), isGenerator = (void 0), isAsync = (void 0), startPos = (void 0), startLoc = (void 0); - if (this$1.options.ecmaVersion >= 6) { - prop.method = false; - prop.shorthand = false; - if (isPattern || refDestructuringErrors) { - startPos = this$1.start; - startLoc = this$1.startLoc; - } - if (!isPattern) - { isGenerator = this$1.eat(types.star); } - } - this$1.parsePropertyName(prop); - if (!isPattern && this$1.options.ecmaVersion >= 8 && !isGenerator && this$1.isAsyncProp(prop)) { - isAsync = true; - this$1.parsePropertyName(prop, refDestructuringErrors); - } else { - isAsync = false; - } - this$1.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors); - this$1.checkPropClash(prop, propHash); - node.properties.push(this$1.finishNode(prop, "Property")); - } - return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression") -}; - -pp$3.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors) { - if ((isGenerator || isAsync) && this.type === types.colon) - { this.unexpected(); } - - if (this.eat(types.colon)) { - prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc) : this.parseMaybeAssign(false, refDestructuringErrors); - prop.kind = "init"; - } else if (this.options.ecmaVersion >= 6 && this.type === types.parenL) { - if (isPattern) { this.unexpected(); } - prop.kind = "init"; - prop.method = true; - prop.value = this.parseMethod(isGenerator, isAsync); - } else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" && - (prop.key.name === "get" || prop.key.name === "set") && - (this.type != types.comma && this.type != types.braceR)) { - if (isGenerator || isAsync || isPattern) { this.unexpected(); } - prop.kind = prop.key.name; - this.parsePropertyName(prop); - prop.value = this.parseMethod(false); - var paramCount = prop.kind === "get" ? 0 : 1; - if (prop.value.params.length !== paramCount) { - var start = prop.value.start; - if (prop.kind === "get") - { this.raiseRecoverable(start, "getter should have no params"); } - else - { this.raiseRecoverable(start, "setter should have exactly one param"); } - } else { - if (prop.kind === "set" && prop.value.params[0].type === "RestElement") - { this.raiseRecoverable(prop.value.params[0].start, "Setter cannot use rest params"); } - } - } else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") { - this.checkUnreserved(prop.key); - prop.kind = "init"; - if (isPattern) { - prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key); - } else if (this.type === types.eq && refDestructuringErrors) { - if (refDestructuringErrors.shorthandAssign < 0) - { refDestructuringErrors.shorthandAssign = this.start; } - prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key); - } else { - prop.value = prop.key; - } - prop.shorthand = true; - } else { this.unexpected(); } -}; - -pp$3.parsePropertyName = function(prop) { - if (this.options.ecmaVersion >= 6) { - if (this.eat(types.bracketL)) { - prop.computed = true; - prop.key = this.parseMaybeAssign(); - this.expect(types.bracketR); - return prop.key - } else { - prop.computed = false; - } - } - return prop.key = this.type === types.num || this.type === types.string ? this.parseExprAtom() : this.parseIdent(true) -}; - -// Initialize empty function node. - -pp$3.initFunction = function(node) { - node.id = null; - if (this.options.ecmaVersion >= 6) { - node.generator = false; - node.expression = false; - } - if (this.options.ecmaVersion >= 8) - { node.async = false; } -}; - -// Parse object or class method. - -pp$3.parseMethod = function(isGenerator, isAsync) { - var node = this.startNode(), oldInGen = this.inGenerator, oldInAsync = this.inAsync, - oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction; - - this.initFunction(node); - if (this.options.ecmaVersion >= 6) - { node.generator = isGenerator; } - if (this.options.ecmaVersion >= 8) - { node.async = !!isAsync; } - - this.inGenerator = node.generator; - this.inAsync = node.async; - this.yieldPos = 0; - this.awaitPos = 0; - this.inFunction = true; - this.enterFunctionScope(); - - this.expect(types.parenL); - node.params = this.parseBindingList(types.parenR, false, this.options.ecmaVersion >= 8); - this.checkYieldAwaitInDefaultParams(); - this.parseFunctionBody(node, false); - - this.inGenerator = oldInGen; - this.inAsync = oldInAsync; - this.yieldPos = oldYieldPos; - this.awaitPos = oldAwaitPos; - this.inFunction = oldInFunc; - return this.finishNode(node, "FunctionExpression") -}; - -// Parse arrow function expression with given parameters. - -pp$3.parseArrowExpression = function(node, params, isAsync) { - var oldInGen = this.inGenerator, oldInAsync = this.inAsync, - oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction; - - this.enterFunctionScope(); - this.initFunction(node); - if (this.options.ecmaVersion >= 8) - { node.async = !!isAsync; } - - this.inGenerator = false; - this.inAsync = node.async; - this.yieldPos = 0; - this.awaitPos = 0; - this.inFunction = true; - - node.params = this.toAssignableList(params, true); - this.parseFunctionBody(node, true); - - this.inGenerator = oldInGen; - this.inAsync = oldInAsync; - this.yieldPos = oldYieldPos; - this.awaitPos = oldAwaitPos; - this.inFunction = oldInFunc; - return this.finishNode(node, "ArrowFunctionExpression") -}; - -// Parse function body and check parameters. - -pp$3.parseFunctionBody = function(node, isArrowFunction) { - var isExpression = isArrowFunction && this.type !== types.braceL; - var oldStrict = this.strict, useStrict = false; - - if (isExpression) { - node.body = this.parseMaybeAssign(); - node.expression = true; - this.checkParams(node, false); - } else { - var nonSimple = this.options.ecmaVersion >= 7 && !this.isSimpleParamList(node.params); - if (!oldStrict || nonSimple) { - useStrict = this.strictDirective(this.end); - // If this is a strict mode function, verify that argument names - // are not repeated, and it does not try to bind the words `eval` - // or `arguments`. - if (useStrict && nonSimple) - { this.raiseRecoverable(node.start, "Illegal 'use strict' directive in function with non-simple parameter list"); } - } - // Start a new scope with regard to labels and the `inFunction` - // flag (restore them to their old value afterwards). - var oldLabels = this.labels; - this.labels = []; - if (useStrict) { this.strict = true; } - - // Add the params to varDeclaredNames to ensure that an error is thrown - // if a let/const declaration in the function clashes with one of the params. - this.checkParams(node, !oldStrict && !useStrict && !isArrowFunction && this.isSimpleParamList(node.params)); - node.body = this.parseBlock(false); - node.expression = false; - this.labels = oldLabels; - } - this.exitFunctionScope(); - - if (this.strict && node.id) { - // Ensure the function name isn't a forbidden identifier in strict mode, e.g. 'eval' - this.checkLVal(node.id, "none"); - } - this.strict = oldStrict; -}; - -pp$3.isSimpleParamList = function(params) { - for (var i = 0, list = params; i < list.length; i += 1) - { - var param = list[i]; - - if (param.type !== "Identifier") { return false - } } - return true -}; - -// Checks function params for various disallowed patterns such as using "eval" -// or "arguments" and duplicate parameters. - -pp$3.checkParams = function(node, allowDuplicates) { - var this$1 = this; - - var nameHash = {}; - for (var i = 0, list = node.params; i < list.length; i += 1) - { - var param = list[i]; - - this$1.checkLVal(param, "var", allowDuplicates ? null : nameHash); - } -}; - -// Parses a comma-separated list of expressions, and returns them as -// an array. `close` is the token type that ends the list, and -// `allowEmpty` can be turned on to allow subsequent commas with -// nothing in between them to be parsed as `null` (which is needed -// for array literals). - -pp$3.parseExprList = function(close, allowTrailingComma, allowEmpty, refDestructuringErrors) { - var this$1 = this; - - var elts = [], first = true; - while (!this.eat(close)) { - if (!first) { - this$1.expect(types.comma); - if (allowTrailingComma && this$1.afterTrailingComma(close)) { break } - } else { first = false; } - - var elt = (void 0); - if (allowEmpty && this$1.type === types.comma) - { elt = null; } - else if (this$1.type === types.ellipsis) { - elt = this$1.parseSpread(refDestructuringErrors); - if (refDestructuringErrors && this$1.type === types.comma && refDestructuringErrors.trailingComma < 0) - { refDestructuringErrors.trailingComma = this$1.start; } - } else { - elt = this$1.parseMaybeAssign(false, refDestructuringErrors); - } - elts.push(elt); - } - return elts -}; - -// Parse the next token as an identifier. If `liberal` is true (used -// when parsing properties), it will also convert keywords into -// identifiers. - -pp$3.checkUnreserved = function(ref) { - var start = ref.start; - var end = ref.end; - var name = ref.name; - - if (this.inGenerator && name === "yield") - { this.raiseRecoverable(start, "Can not use 'yield' as identifier inside a generator"); } - if (this.inAsync && name === "await") - { this.raiseRecoverable(start, "Can not use 'await' as identifier inside an async function"); } - if (this.isKeyword(name)) - { this.raise(start, ("Unexpected keyword '" + name + "'")); } - if (this.options.ecmaVersion < 6 && - this.input.slice(start, end).indexOf("\\") != -1) { return } - var re = this.strict ? this.reservedWordsStrict : this.reservedWords; - if (re.test(name)) - { this.raiseRecoverable(start, ("The keyword '" + name + "' is reserved")); } -}; - -pp$3.parseIdent = function(liberal, isBinding) { - var node = this.startNode(); - if (liberal && this.options.allowReserved == "never") { liberal = false; } - if (this.type === types.name) { - node.name = this.value; - } else if (this.type.keyword) { - node.name = this.type.keyword; - } else { - this.unexpected(); - } - this.next(); - this.finishNode(node, "Identifier"); - if (!liberal) { this.checkUnreserved(node); } - return node -}; - -// Parses yield expression inside generator. - -pp$3.parseYield = function() { - if (!this.yieldPos) { this.yieldPos = this.start; } - - var node = this.startNode(); - this.next(); - if (this.type == types.semi || this.canInsertSemicolon() || (this.type != types.star && !this.type.startsExpr)) { - node.delegate = false; - node.argument = null; - } else { - node.delegate = this.eat(types.star); - node.argument = this.parseMaybeAssign(); - } - return this.finishNode(node, "YieldExpression") -}; - -pp$3.parseAwait = function() { - if (!this.awaitPos) { this.awaitPos = this.start; } - - var node = this.startNode(); - this.next(); - node.argument = this.parseMaybeUnary(null, true); - return this.finishNode(node, "AwaitExpression") -}; - -var pp$4 = Parser.prototype; - -// This function is used to raise exceptions on parse errors. It -// takes an offset integer (into the current `input`) to indicate -// the location of the error, attaches the position to the end -// of the error message, and then raises a `SyntaxError` with that -// message. - -pp$4.raise = function(pos, message) { - var loc = getLineInfo(this.input, pos); - message += " (" + loc.line + ":" + loc.column + ")"; - var err = new SyntaxError(message); - err.pos = pos; err.loc = loc; err.raisedAt = this.pos; - throw err -}; - -pp$4.raiseRecoverable = pp$4.raise; - -pp$4.curPosition = function() { - if (this.options.locations) { - return new Position(this.curLine, this.pos - this.lineStart) - } -}; - -var pp$5 = Parser.prototype; - -// Object.assign polyfill -var assign = Object.assign || function(target) { - var sources = [], len = arguments.length - 1; - while ( len-- > 0 ) sources[ len ] = arguments[ len + 1 ]; - - for (var i = 0, list = sources; i < list.length; i += 1) { - var source = list[i]; - - for (var key in source) { - if (has(source, key)) { - target[key] = source[key]; - } - } - } - return target -}; - -// The functions in this module keep track of declared variables in the current scope in order to detect duplicate variable names. - -pp$5.enterFunctionScope = function() { - // var: a hash of var-declared names in the current lexical scope - // lexical: a hash of lexically-declared names in the current lexical scope - // childVar: a hash of var-declared names in all child lexical scopes of the current lexical scope (within the current function scope) - // parentLexical: a hash of lexically-declared names in all parent lexical scopes of the current lexical scope (within the current function scope) - this.scopeStack.push({var: {}, lexical: {}, childVar: {}, parentLexical: {}}); -}; - -pp$5.exitFunctionScope = function() { - this.scopeStack.pop(); -}; - -pp$5.enterLexicalScope = function() { - var parentScope = this.scopeStack[this.scopeStack.length - 1]; - var childScope = {var: {}, lexical: {}, childVar: {}, parentLexical: {}}; - - this.scopeStack.push(childScope); - assign(childScope.parentLexical, parentScope.lexical, parentScope.parentLexical); -}; - -pp$5.exitLexicalScope = function() { - var childScope = this.scopeStack.pop(); - var parentScope = this.scopeStack[this.scopeStack.length - 1]; - - assign(parentScope.childVar, childScope.var, childScope.childVar); -}; - -/** - * A name can be declared with `var` if there are no variables with the same name declared with `let`/`const` - * in the current lexical scope or any of the parent lexical scopes in this function. - */ -pp$5.canDeclareVarName = function(name) { - var currentScope = this.scopeStack[this.scopeStack.length - 1]; - - return !has(currentScope.lexical, name) && !has(currentScope.parentLexical, name) -}; - -/** - * A name can be declared with `let`/`const` if there are no variables with the same name declared with `let`/`const` - * in the current scope, and there are no variables with the same name declared with `var` in the current scope or in - * any child lexical scopes in this function. - */ -pp$5.canDeclareLexicalName = function(name) { - var currentScope = this.scopeStack[this.scopeStack.length - 1]; - - return !has(currentScope.lexical, name) && !has(currentScope.var, name) && !has(currentScope.childVar, name) -}; - -pp$5.declareVarName = function(name) { - this.scopeStack[this.scopeStack.length - 1].var[name] = true; -}; - -pp$5.declareLexicalName = function(name) { - this.scopeStack[this.scopeStack.length - 1].lexical[name] = true; -}; - -var Node = function Node(parser, pos, loc) { - this.type = ""; - this.start = pos; - this.end = 0; - if (parser.options.locations) - { this.loc = new SourceLocation(parser, loc); } - if (parser.options.directSourceFile) - { this.sourceFile = parser.options.directSourceFile; } - if (parser.options.ranges) - { this.range = [pos, 0]; } -}; - -// Start an AST node, attaching a start offset. - -var pp$6 = Parser.prototype; - -pp$6.startNode = function() { - return new Node(this, this.start, this.startLoc) -}; - -pp$6.startNodeAt = function(pos, loc) { - return new Node(this, pos, loc) -}; - -// Finish an AST node, adding `type` and `end` properties. - -function finishNodeAt(node, type, pos, loc) { - node.type = type; - node.end = pos; - if (this.options.locations) - { node.loc.end = loc; } - if (this.options.ranges) - { node.range[1] = pos; } - return node -} - -pp$6.finishNode = function(node, type) { - return finishNodeAt.call(this, node, type, this.lastTokEnd, this.lastTokEndLoc) -}; - -// Finish node at given position - -pp$6.finishNodeAt = function(node, type, pos, loc) { - return finishNodeAt.call(this, node, type, pos, loc) -}; - -// The algorithm used to determine whether a regexp can appear at a -// given point in the program is loosely based on sweet.js' approach. -// See https://github.com/mozilla/sweet.js/wiki/design - -var TokContext = function TokContext(token, isExpr, preserveSpace, override, generator) { - this.token = token; - this.isExpr = !!isExpr; - this.preserveSpace = !!preserveSpace; - this.override = override; - this.generator = !!generator; -}; - -var types$1 = { - b_stat: new TokContext("{", false), - b_expr: new TokContext("{", true), - b_tmpl: new TokContext("${", false), - p_stat: new TokContext("(", false), - p_expr: new TokContext("(", true), - q_tmpl: new TokContext("`", true, true, function (p) { return p.tryReadTemplateToken(); }), - f_stat: new TokContext("function", false), - f_expr: new TokContext("function", true), - f_expr_gen: new TokContext("function", true, false, null, true), - f_gen: new TokContext("function", false, false, null, true) -}; - -var pp$7 = Parser.prototype; - -pp$7.initialContext = function() { - return [types$1.b_stat] -}; - -pp$7.braceIsBlock = function(prevType) { - var parent = this.curContext(); - if (parent === types$1.f_expr || parent === types$1.f_stat) - { return true } - if (prevType === types.colon && (parent === types$1.b_stat || parent === types$1.b_expr)) - { return !parent.isExpr } - - // The check for `tt.name && exprAllowed` detects whether we are - // after a `yield` or `of` construct. See the `updateContext` for - // `tt.name`. - if (prevType === types._return || prevType == types.name && this.exprAllowed) - { return lineBreak.test(this.input.slice(this.lastTokEnd, this.start)) } - if (prevType === types._else || prevType === types.semi || prevType === types.eof || prevType === types.parenR || prevType == types.arrow) - { return true } - if (prevType == types.braceL) - { return parent === types$1.b_stat } - if (prevType == types._var || prevType == types.name) - { return false } - return !this.exprAllowed -}; - -pp$7.inGeneratorContext = function() { - var this$1 = this; - - for (var i = this.context.length - 1; i >= 1; i--) { - var context = this$1.context[i]; - if (context.token === "function") - { return context.generator } - } - return false -}; - -pp$7.updateContext = function(prevType) { - var update, type = this.type; - if (type.keyword && prevType == types.dot) - { this.exprAllowed = false; } - else if (update = type.updateContext) - { update.call(this, prevType); } - else - { this.exprAllowed = type.beforeExpr; } -}; - -// Token-specific context update code - -types.parenR.updateContext = types.braceR.updateContext = function() { - if (this.context.length == 1) { - this.exprAllowed = true; - return - } - var out = this.context.pop(); - if (out === types$1.b_stat && this.curContext().token === "function") { - out = this.context.pop(); - } - this.exprAllowed = !out.isExpr; -}; - -types.braceL.updateContext = function(prevType) { - this.context.push(this.braceIsBlock(prevType) ? types$1.b_stat : types$1.b_expr); - this.exprAllowed = true; -}; - -types.dollarBraceL.updateContext = function() { - this.context.push(types$1.b_tmpl); - this.exprAllowed = true; -}; - -types.parenL.updateContext = function(prevType) { - var statementParens = prevType === types._if || prevType === types._for || prevType === types._with || prevType === types._while; - this.context.push(statementParens ? types$1.p_stat : types$1.p_expr); - this.exprAllowed = true; -}; - -types.incDec.updateContext = function() { - // tokExprAllowed stays unchanged -}; - -types._function.updateContext = types._class.updateContext = function(prevType) { - if (prevType.beforeExpr && prevType !== types.semi && prevType !== types._else && - !((prevType === types.colon || prevType === types.braceL) && this.curContext() === types$1.b_stat)) - { this.context.push(types$1.f_expr); } - else - { this.context.push(types$1.f_stat); } - this.exprAllowed = false; -}; - -types.backQuote.updateContext = function() { - if (this.curContext() === types$1.q_tmpl) - { this.context.pop(); } - else - { this.context.push(types$1.q_tmpl); } - this.exprAllowed = false; -}; - -types.star.updateContext = function(prevType) { - if (prevType == types._function) { - var index = this.context.length - 1; - if (this.context[index] === types$1.f_expr) - { this.context[index] = types$1.f_expr_gen; } - else - { this.context[index] = types$1.f_gen; } - } - this.exprAllowed = true; -}; - -types.name.updateContext = function(prevType) { - var allowed = false; - if (this.options.ecmaVersion >= 6) { - if (this.value == "of" && !this.exprAllowed || - this.value == "yield" && this.inGeneratorContext()) - { allowed = true; } - } - this.exprAllowed = allowed; -}; - -// Object type used to represent tokens. Note that normally, tokens -// simply exist as properties on the parser object. This is only -// used for the onToken callback and the external tokenizer. - -var Token = function Token(p) { - this.type = p.type; - this.value = p.value; - this.start = p.start; - this.end = p.end; - if (p.options.locations) - { this.loc = new SourceLocation(p, p.startLoc, p.endLoc); } - if (p.options.ranges) - { this.range = [p.start, p.end]; } -}; - -// ## Tokenizer - -var pp$8 = Parser.prototype; - -// Are we running under Rhino? -var isRhino = typeof Packages == "object" && Object.prototype.toString.call(Packages) == "[object JavaPackage]"; - -// Move to the next token - -pp$8.next = function() { - if (this.options.onToken) - { this.options.onToken(new Token(this)); } - - this.lastTokEnd = this.end; - this.lastTokStart = this.start; - this.lastTokEndLoc = this.endLoc; - this.lastTokStartLoc = this.startLoc; - this.nextToken(); -}; - -pp$8.getToken = function() { - this.next(); - return new Token(this) -}; - -// If we're in an ES6 environment, make parsers iterable -if (typeof Symbol !== "undefined") - { pp$8[Symbol.iterator] = function() { - var this$1 = this; - - return { - next: function () { - var token = this$1.getToken(); - return { - done: token.type === types.eof, - value: token - } - } - } - }; } - -// Toggle strict mode. Re-reads the next number or string to please -// pedantic tests (`"use strict"; 010;` should fail). - -pp$8.curContext = function() { - return this.context[this.context.length - 1] -}; - -// Read a single token, updating the parser object's token-related -// properties. - -pp$8.nextToken = function() { - var curContext = this.curContext(); - if (!curContext || !curContext.preserveSpace) { this.skipSpace(); } - - this.start = this.pos; - if (this.options.locations) { this.startLoc = this.curPosition(); } - if (this.pos >= this.input.length) { return this.finishToken(types.eof) } - - if (curContext.override) { return curContext.override(this) } - else { this.readToken(this.fullCharCodeAtPos()); } -}; - -pp$8.readToken = function(code) { - // Identifier or keyword. '\uXXXX' sequences are allowed in - // identifiers, so '\' also dispatches to that. - if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */) - { return this.readWord() } - - return this.getTokenFromCode(code) -}; - -pp$8.fullCharCodeAtPos = function() { - var code = this.input.charCodeAt(this.pos); - if (code <= 0xd7ff || code >= 0xe000) { return code } - var next = this.input.charCodeAt(this.pos + 1); - return (code << 10) + next - 0x35fdc00 -}; - -pp$8.skipBlockComment = function() { - var this$1 = this; - - var startLoc = this.options.onComment && this.curPosition(); - var start = this.pos, end = this.input.indexOf("*/", this.pos += 2); - if (end === -1) { this.raise(this.pos - 2, "Unterminated comment"); } - this.pos = end + 2; - if (this.options.locations) { - lineBreakG.lastIndex = start; - var match; - while ((match = lineBreakG.exec(this.input)) && match.index < this.pos) { - ++this$1.curLine; - this$1.lineStart = match.index + match[0].length; - } - } - if (this.options.onComment) - { this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos, - startLoc, this.curPosition()); } -}; - -pp$8.skipLineComment = function(startSkip) { - var this$1 = this; - - var start = this.pos; - var startLoc = this.options.onComment && this.curPosition(); - var ch = this.input.charCodeAt(this.pos += startSkip); - while (this.pos < this.input.length && !isNewLine(ch)) { - ch = this$1.input.charCodeAt(++this$1.pos); - } - if (this.options.onComment) - { this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos, - startLoc, this.curPosition()); } -}; - -// Called at the start of the parse and after every token. Skips -// whitespace and comments, and. - -pp$8.skipSpace = function() { - var this$1 = this; - - loop: while (this.pos < this.input.length) { - var ch = this$1.input.charCodeAt(this$1.pos); - switch (ch) { - case 32: case 160: // ' ' - ++this$1.pos; - break - case 13: - if (this$1.input.charCodeAt(this$1.pos + 1) === 10) { - ++this$1.pos; - } - case 10: case 8232: case 8233: - ++this$1.pos; - if (this$1.options.locations) { - ++this$1.curLine; - this$1.lineStart = this$1.pos; - } - break - case 47: // '/' - switch (this$1.input.charCodeAt(this$1.pos + 1)) { - case 42: // '*' - this$1.skipBlockComment(); - break - case 47: - this$1.skipLineComment(2); - break - default: - break loop - } - break - default: - if (ch > 8 && ch < 14 || ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) { - ++this$1.pos; - } else { - break loop - } - } - } -}; - -// Called at the end of every token. Sets `end`, `val`, and -// maintains `context` and `exprAllowed`, and skips the space after -// the token, so that the next one's `start` will point at the -// right position. - -pp$8.finishToken = function(type, val) { - this.end = this.pos; - if (this.options.locations) { this.endLoc = this.curPosition(); } - var prevType = this.type; - this.type = type; - this.value = val; - - this.updateContext(prevType); -}; - -// ### Token reading - -// This is the function that is called to fetch the next token. It -// is somewhat obscure, because it works in character codes rather -// than characters, and because operator parsing has been inlined -// into it. -// -// All in the name of speed. -// -pp$8.readToken_dot = function() { - var next = this.input.charCodeAt(this.pos + 1); - if (next >= 48 && next <= 57) { return this.readNumber(true) } - var next2 = this.input.charCodeAt(this.pos + 2); - if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.' - this.pos += 3; - return this.finishToken(types.ellipsis) - } else { - ++this.pos; - return this.finishToken(types.dot) - } -}; - -pp$8.readToken_slash = function() { // '/' - var next = this.input.charCodeAt(this.pos + 1); - if (this.exprAllowed) { ++this.pos; return this.readRegexp() } - if (next === 61) { return this.finishOp(types.assign, 2) } - return this.finishOp(types.slash, 1) -}; - -pp$8.readToken_mult_modulo_exp = function(code) { // '%*' - var next = this.input.charCodeAt(this.pos + 1); - var size = 1; - var tokentype = code === 42 ? types.star : types.modulo; - - // exponentiation operator ** and **= - if (this.options.ecmaVersion >= 7 && next === 42) { - ++size; - tokentype = types.starstar; - next = this.input.charCodeAt(this.pos + 2); - } - - if (next === 61) { return this.finishOp(types.assign, size + 1) } - return this.finishOp(tokentype, size) -}; - -pp$8.readToken_pipe_amp = function(code) { // '|&' - var next = this.input.charCodeAt(this.pos + 1); - if (next === code) { return this.finishOp(code === 124 ? types.logicalOR : types.logicalAND, 2) } - if (next === 61) { return this.finishOp(types.assign, 2) } - return this.finishOp(code === 124 ? types.bitwiseOR : types.bitwiseAND, 1) -}; - -pp$8.readToken_caret = function() { // '^' - var next = this.input.charCodeAt(this.pos + 1); - if (next === 61) { return this.finishOp(types.assign, 2) } - return this.finishOp(types.bitwiseXOR, 1) -}; - -pp$8.readToken_plus_min = function(code) { // '+-' - var next = this.input.charCodeAt(this.pos + 1); - if (next === code) { - if (next == 45 && !this.inModule && this.input.charCodeAt(this.pos + 2) == 62 && - (this.lastTokEnd === 0 || lineBreak.test(this.input.slice(this.lastTokEnd, this.pos)))) { - // A `-->` line comment - this.skipLineComment(3); - this.skipSpace(); - return this.nextToken() - } - return this.finishOp(types.incDec, 2) - } - if (next === 61) { return this.finishOp(types.assign, 2) } - return this.finishOp(types.plusMin, 1) -}; - -pp$8.readToken_lt_gt = function(code) { // '<>' - var next = this.input.charCodeAt(this.pos + 1); - var size = 1; - if (next === code) { - size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2; - if (this.input.charCodeAt(this.pos + size) === 61) { return this.finishOp(types.assign, size + 1) } - return this.finishOp(types.bitShift, size) - } - if (next == 33 && code == 60 && !this.inModule && this.input.charCodeAt(this.pos + 2) == 45 && - this.input.charCodeAt(this.pos + 3) == 45) { - // `<!--`, an XML-style comment that should be interpreted as a line comment - this.skipLineComment(4); - this.skipSpace(); - return this.nextToken() - } - if (next === 61) { size = 2; } - return this.finishOp(types.relational, size) -}; - -pp$8.readToken_eq_excl = function(code) { // '=!' - var next = this.input.charCodeAt(this.pos + 1); - if (next === 61) { return this.finishOp(types.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2) } - if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) { // '=>' - this.pos += 2; - return this.finishToken(types.arrow) - } - return this.finishOp(code === 61 ? types.eq : types.prefix, 1) -}; - -pp$8.getTokenFromCode = function(code) { - switch (code) { - // The interpretation of a dot depends on whether it is followed - // by a digit or another two dots. - case 46: // '.' - return this.readToken_dot() - - // Punctuation tokens. - case 40: ++this.pos; return this.finishToken(types.parenL) - case 41: ++this.pos; return this.finishToken(types.parenR) - case 59: ++this.pos; return this.finishToken(types.semi) - case 44: ++this.pos; return this.finishToken(types.comma) - case 91: ++this.pos; return this.finishToken(types.bracketL) - case 93: ++this.pos; return this.finishToken(types.bracketR) - case 123: ++this.pos; return this.finishToken(types.braceL) - case 125: ++this.pos; return this.finishToken(types.braceR) - case 58: ++this.pos; return this.finishToken(types.colon) - case 63: ++this.pos; return this.finishToken(types.question) - - case 96: // '`' - if (this.options.ecmaVersion < 6) { break } - ++this.pos; - return this.finishToken(types.backQuote) - - case 48: // '0' - var next = this.input.charCodeAt(this.pos + 1); - if (next === 120 || next === 88) { return this.readRadixNumber(16) } // '0x', '0X' - hex number - if (this.options.ecmaVersion >= 6) { - if (next === 111 || next === 79) { return this.readRadixNumber(8) } // '0o', '0O' - octal number - if (next === 98 || next === 66) { return this.readRadixNumber(2) } // '0b', '0B' - binary number - } - // Anything else beginning with a digit is an integer, octal - // number, or float. - case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: // 1-9 - return this.readNumber(false) - - // Quotes produce strings. - case 34: case 39: // '"', "'" - return this.readString(code) - - // Operators are parsed inline in tiny state machines. '=' (61) is - // often referred to. `finishOp` simply skips the amount of - // characters it is given as second argument, and returns a token - // of the type given by its first argument. - - case 47: // '/' - return this.readToken_slash() - - case 37: case 42: // '%*' - return this.readToken_mult_modulo_exp(code) - - case 124: case 38: // '|&' - return this.readToken_pipe_amp(code) - - case 94: // '^' - return this.readToken_caret() - - case 43: case 45: // '+-' - return this.readToken_plus_min(code) - - case 60: case 62: // '<>' - return this.readToken_lt_gt(code) - - case 61: case 33: // '=!' - return this.readToken_eq_excl(code) - - case 126: // '~' - return this.finishOp(types.prefix, 1) - } - - this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'"); -}; - -pp$8.finishOp = function(type, size) { - var str = this.input.slice(this.pos, this.pos + size); - this.pos += size; - return this.finishToken(type, str) -}; - -// Parse a regular expression. Some context-awareness is necessary, -// since a '/' inside a '[]' set does not end the expression. - -function tryCreateRegexp(src, flags, throwErrorAt, parser) { - try { - return new RegExp(src, flags) - } catch (e) { - if (throwErrorAt !== undefined) { - if (e instanceof SyntaxError) { parser.raise(throwErrorAt, "Error parsing regular expression: " + e.message); } - throw e - } - } -} - -var regexpUnicodeSupport = !!tryCreateRegexp("\uffff", "u"); - -pp$8.readRegexp = function() { - var this$1 = this; - - var escaped, inClass, start = this.pos; - for (;;) { - if (this$1.pos >= this$1.input.length) { this$1.raise(start, "Unterminated regular expression"); } - var ch = this$1.input.charAt(this$1.pos); - if (lineBreak.test(ch)) { this$1.raise(start, "Unterminated regular expression"); } - if (!escaped) { - if (ch === "[") { inClass = true; } - else if (ch === "]" && inClass) { inClass = false; } - else if (ch === "/" && !inClass) { break } - escaped = ch === "\\"; - } else { escaped = false; } - ++this$1.pos; - } - var content = this.input.slice(start, this.pos); - ++this.pos; - // Need to use `readWord1` because '\uXXXX' sequences are allowed - // here (don't ask). - var mods = this.readWord1(); - var tmp = content, tmpFlags = ""; - if (mods) { - var validFlags = /^[gim]*$/; - if (this.options.ecmaVersion >= 6) { validFlags = /^[gimuy]*$/; } - if (!validFlags.test(mods)) { this.raise(start, "Invalid regular expression flag"); } - if (mods.indexOf("u") >= 0) { - if (regexpUnicodeSupport) { - tmpFlags = "u"; - } else { - // Replace each astral symbol and every Unicode escape sequence that - // possibly represents an astral symbol or a paired surrogate with a - // single ASCII symbol to avoid throwing on regular expressions that - // are only valid in combination with the `/u` flag. - // Note: replacing with the ASCII symbol `x` might cause false - // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a - // perfectly valid pattern that is equivalent to `[a-b]`, but it would - // be replaced by `[x-b]` which throws an error. - tmp = tmp.replace(/\\u\{([0-9a-fA-F]+)\}/g, function (_match, code, offset) { - code = Number("0x" + code); - if (code > 0x10FFFF) { this$1.raise(start + offset + 3, "Code point out of bounds"); } - return "x" - }); - tmp = tmp.replace(/\\u([a-fA-F0-9]{4})|[\uD800-\uDBFF][\uDC00-\uDFFF]/g, "x"); - tmpFlags = tmpFlags.replace("u", ""); - } - } - } - // Detect invalid regular expressions. - var value = null; - // Rhino's regular expression parser is flaky and throws uncatchable exceptions, - // so don't do detection if we are running under Rhino - if (!isRhino) { - tryCreateRegexp(tmp, tmpFlags, start, this); - // Get a regular expression object for this pattern-flag pair, or `null` in - // case the current environment doesn't support the flags it uses. - value = tryCreateRegexp(content, mods); - } - return this.finishToken(types.regexp, {pattern: content, flags: mods, value: value}) -}; - -// Read an integer in the given radix. Return null if zero digits -// were read, the integer value otherwise. When `len` is given, this -// will return `null` unless the integer has exactly `len` digits. - -pp$8.readInt = function(radix, len) { - var this$1 = this; - - var start = this.pos, total = 0; - for (var i = 0, e = len == null ? Infinity : len; i < e; ++i) { - var code = this$1.input.charCodeAt(this$1.pos), val = (void 0); - if (code >= 97) { val = code - 97 + 10; } // a - else if (code >= 65) { val = code - 65 + 10; } // A - else if (code >= 48 && code <= 57) { val = code - 48; } // 0-9 - else { val = Infinity; } - if (val >= radix) { break } - ++this$1.pos; - total = total * radix + val; - } - if (this.pos === start || len != null && this.pos - start !== len) { return null } - - return total -}; - -pp$8.readRadixNumber = function(radix) { - this.pos += 2; // 0x - var val = this.readInt(radix); - if (val == null) { this.raise(this.start + 2, "Expected number in radix " + radix); } - if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); } - return this.finishToken(types.num, val) -}; - -// Read an integer, octal integer, or floating-point number. - -pp$8.readNumber = function(startsWithDot) { - var start = this.pos, isFloat = false, octal = this.input.charCodeAt(this.pos) === 48; - if (!startsWithDot && this.readInt(10) === null) { this.raise(start, "Invalid number"); } - if (octal && this.pos == start + 1) { octal = false; } - var next = this.input.charCodeAt(this.pos); - if (next === 46 && !octal) { // '.' - ++this.pos; - this.readInt(10); - isFloat = true; - next = this.input.charCodeAt(this.pos); - } - if ((next === 69 || next === 101) && !octal) { // 'eE' - next = this.input.charCodeAt(++this.pos); - if (next === 43 || next === 45) { ++this.pos; } // '+-' - if (this.readInt(10) === null) { this.raise(start, "Invalid number"); } - isFloat = true; - } - if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); } - - var str = this.input.slice(start, this.pos), val; - if (isFloat) { val = parseFloat(str); } - else if (!octal || str.length === 1) { val = parseInt(str, 10); } - else if (this.strict) { this.raise(start, "Invalid number"); } - else if (/[89]/.test(str)) { val = parseInt(str, 10); } - else { val = parseInt(str, 8); } - return this.finishToken(types.num, val) -}; - -// Read a string value, interpreting backslash-escapes. - -pp$8.readCodePoint = function() { - var ch = this.input.charCodeAt(this.pos), code; - - if (ch === 123) { // '{' - if (this.options.ecmaVersion < 6) { this.unexpected(); } - var codePos = ++this.pos; - code = this.readHexChar(this.input.indexOf("}", this.pos) - this.pos); - ++this.pos; - if (code > 0x10FFFF) { this.invalidStringToken(codePos, "Code point out of bounds"); } - } else { - code = this.readHexChar(4); - } - return code -}; - -function codePointToString(code) { - // UTF-16 Decoding - if (code <= 0xFFFF) { return String.fromCharCode(code) } - code -= 0x10000; - return String.fromCharCode((code >> 10) + 0xD800, (code & 1023) + 0xDC00) -} - -pp$8.readString = function(quote) { - var this$1 = this; - - var out = "", chunkStart = ++this.pos; - for (;;) { - if (this$1.pos >= this$1.input.length) { this$1.raise(this$1.start, "Unterminated string constant"); } - var ch = this$1.input.charCodeAt(this$1.pos); - if (ch === quote) { break } - if (ch === 92) { // '\' - out += this$1.input.slice(chunkStart, this$1.pos); - out += this$1.readEscapedChar(false); - chunkStart = this$1.pos; - } else { - if (isNewLine(ch)) { this$1.raise(this$1.start, "Unterminated string constant"); } - ++this$1.pos; - } - } - out += this.input.slice(chunkStart, this.pos++); - return this.finishToken(types.string, out) -}; - -// Reads template string tokens. - -var INVALID_TEMPLATE_ESCAPE_ERROR = {}; - -pp$8.tryReadTemplateToken = function() { - this.inTemplateElement = true; - try { - this.readTmplToken(); - } catch (err) { - if (err === INVALID_TEMPLATE_ESCAPE_ERROR) { - this.readInvalidTemplateToken(); - } else { - throw err - } - } - - this.inTemplateElement = false; -}; - -pp$8.invalidStringToken = function(position, message) { - if (this.inTemplateElement && this.options.ecmaVersion >= 9) { - throw INVALID_TEMPLATE_ESCAPE_ERROR - } else { - this.raise(position, message); - } -}; - -pp$8.readTmplToken = function() { - var this$1 = this; - - var out = "", chunkStart = this.pos; - for (;;) { - if (this$1.pos >= this$1.input.length) { this$1.raise(this$1.start, "Unterminated template"); } - var ch = this$1.input.charCodeAt(this$1.pos); - if (ch === 96 || ch === 36 && this$1.input.charCodeAt(this$1.pos + 1) === 123) { // '`', '${' - if (this$1.pos === this$1.start && (this$1.type === types.template || this$1.type === types.invalidTemplate)) { - if (ch === 36) { - this$1.pos += 2; - return this$1.finishToken(types.dollarBraceL) - } else { - ++this$1.pos; - return this$1.finishToken(types.backQuote) - } - } - out += this$1.input.slice(chunkStart, this$1.pos); - return this$1.finishToken(types.template, out) - } - if (ch === 92) { // '\' - out += this$1.input.slice(chunkStart, this$1.pos); - out += this$1.readEscapedChar(true); - chunkStart = this$1.pos; - } else if (isNewLine(ch)) { - out += this$1.input.slice(chunkStart, this$1.pos); - ++this$1.pos; - switch (ch) { - case 13: - if (this$1.input.charCodeAt(this$1.pos) === 10) { ++this$1.pos; } - case 10: - out += "\n"; - break - default: - out += String.fromCharCode(ch); - break - } - if (this$1.options.locations) { - ++this$1.curLine; - this$1.lineStart = this$1.pos; - } - chunkStart = this$1.pos; - } else { - ++this$1.pos; - } - } -}; - -// Reads a template token to search for the end, without validating any escape sequences -pp$8.readInvalidTemplateToken = function() { - var this$1 = this; - - for (; this.pos < this.input.length; this.pos++) { - switch (this$1.input[this$1.pos]) { - case "\\": - ++this$1.pos; - break - - case "$": - if (this$1.input[this$1.pos + 1] !== "{") { - break - } - // falls through - - case "`": - return this$1.finishToken(types.invalidTemplate, this$1.input.slice(this$1.start, this$1.pos)) - - // no default - } - } - this.raise(this.start, "Unterminated template"); -}; - -// Used to read escaped characters - -pp$8.readEscapedChar = function(inTemplate) { - var ch = this.input.charCodeAt(++this.pos); - ++this.pos; - switch (ch) { - case 110: return "\n" // 'n' -> '\n' - case 114: return "\r" // 'r' -> '\r' - case 120: return String.fromCharCode(this.readHexChar(2)) // 'x' - case 117: return codePointToString(this.readCodePoint()) // 'u' - case 116: return "\t" // 't' -> '\t' - case 98: return "\b" // 'b' -> '\b' - case 118: return "\u000b" // 'v' -> '\u000b' - case 102: return "\f" // 'f' -> '\f' - case 13: if (this.input.charCodeAt(this.pos) === 10) { ++this.pos; } // '\r\n' - case 10: // ' \n' - if (this.options.locations) { this.lineStart = this.pos; ++this.curLine; } - return "" - default: - if (ch >= 48 && ch <= 55) { - var octalStr = this.input.substr(this.pos - 1, 3).match(/^[0-7]+/)[0]; - var octal = parseInt(octalStr, 8); - if (octal > 255) { - octalStr = octalStr.slice(0, -1); - octal = parseInt(octalStr, 8); - } - if (octalStr !== "0" && (this.strict || inTemplate)) { - this.invalidStringToken(this.pos - 2, "Octal literal in strict mode"); - } - this.pos += octalStr.length - 1; - return String.fromCharCode(octal) - } - return String.fromCharCode(ch) - } -}; - -// Used to read character escape sequences ('\x', '\u', '\U'). - -pp$8.readHexChar = function(len) { - var codePos = this.pos; - var n = this.readInt(16, len); - if (n === null) { this.invalidStringToken(codePos, "Bad character escape sequence"); } - return n -}; - -// Read an identifier, and return it as a string. Sets `this.containsEsc` -// to whether the word contained a '\u' escape. -// -// Incrementally adds only escaped chars, adding other chunks as-is -// as a micro-optimization. - -pp$8.readWord1 = function() { - var this$1 = this; - - this.containsEsc = false; - var word = "", first = true, chunkStart = this.pos; - var astral = this.options.ecmaVersion >= 6; - while (this.pos < this.input.length) { - var ch = this$1.fullCharCodeAtPos(); - if (isIdentifierChar(ch, astral)) { - this$1.pos += ch <= 0xffff ? 1 : 2; - } else if (ch === 92) { // "\" - this$1.containsEsc = true; - word += this$1.input.slice(chunkStart, this$1.pos); - var escStart = this$1.pos; - if (this$1.input.charCodeAt(++this$1.pos) != 117) // "u" - { this$1.invalidStringToken(this$1.pos, "Expecting Unicode escape sequence \\uXXXX"); } - ++this$1.pos; - var esc = this$1.readCodePoint(); - if (!(first ? isIdentifierStart : isIdentifierChar)(esc, astral)) - { this$1.invalidStringToken(escStart, "Invalid Unicode escape"); } - word += codePointToString(esc); - chunkStart = this$1.pos; - } else { - break - } - first = false; - } - return word + this.input.slice(chunkStart, this.pos) -}; - -// Read an identifier or keyword token. Will check for reserved -// words when necessary. - -pp$8.readWord = function() { - var word = this.readWord1(); - var type = types.name; - if (this.keywords.test(word)) { - if (this.containsEsc) { this.raiseRecoverable(this.start, "Escape sequence in keyword " + word); } - type = keywords$1[word]; - } - return this.finishToken(type, word) -}; - -// Acorn is a tiny, fast JavaScript parser written in JavaScript. -// -// Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and -// various contributors and released under an MIT license. -// -// Git repositories for Acorn are available at -// -// http://marijnhaverbeke.nl/git/acorn -// https://github.com/ternjs/acorn.git -// -// Please use the [github bug tracker][ghbt] to report issues. -// -// [ghbt]: https://github.com/ternjs/acorn/issues -// -// This file defines the main parser interface. The library also comes -// with a [error-tolerant parser][dammit] and an -// [abstract syntax tree walker][walk], defined in other files. -// -// [dammit]: acorn_loose.js -// [walk]: util/walk.js - -var version = "5.1.2"; - -// The main exported interface (under `self.acorn` when in the -// browser) is a `parse` function that takes a code string and -// returns an abstract syntax tree as specified by [Mozilla parser -// API][api]. -// -// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API - -function parse(input, options) { - return new Parser(options, input).parse() -} - -// This function tries to parse a single expression at a given -// offset in a string. Useful for parsing mixed-language formats -// that embed JavaScript expressions. - -function parseExpressionAt(input, pos, options) { - var p = new Parser(options, input, pos); - p.nextToken(); - return p.parseExpression() -} - -// Acorn is organized as a tokenizer and a recursive-descent parser. -// The `tokenizer` export provides an interface to the tokenizer. - -function tokenizer(input, options) { - return new Parser(options, input) -} - -// This is a terrible kludge to support the existing, pre-ES6 -// interface where the loose parser module retroactively adds exports -// to this module. - // eslint-disable-line camelcase -function addLooseExports(parse, Parser$$1, plugins$$1) { - exports.parse_dammit = parse; // eslint-disable-line camelcase - exports.LooseParser = Parser$$1; - exports.pluginsLoose = plugins$$1; -} - -exports.version = version; -exports.parse = parse; -exports.parseExpressionAt = parseExpressionAt; -exports.tokenizer = tokenizer; -exports.addLooseExports = addLooseExports; -exports.Parser = Parser; -exports.plugins = plugins; -exports.defaultOptions = defaultOptions; -exports.Position = Position; -exports.SourceLocation = SourceLocation; -exports.getLineInfo = getLineInfo; -exports.Node = Node; -exports.TokenType = TokenType; -exports.tokTypes = types; -exports.keywordTypes = keywords$1; -exports.TokContext = TokContext; -exports.tokContexts = types$1; -exports.isIdentifierChar = isIdentifierChar; -exports.isIdentifierStart = isIdentifierStart; -exports.Token = Token; -exports.isNewLine = isNewLine; -exports.lineBreak = lineBreak; -exports.lineBreakG = lineBreakG; -exports.nonASCIIwhitespace = nonASCIIwhitespace; - -Object.defineProperty(exports, '__esModule', { value: true }); - -}))); - -},{}],3:[function(require,module,exports){ -(function (global, factory) { - typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./acorn')) : - typeof define === 'function' && define.amd ? define(['exports', './acorn'], factory) : - (factory((global.acorn = global.acorn || {}, global.acorn.loose = global.acorn.loose || {}),global.acorn)); -}(this, (function (exports,__acorn) { 'use strict'; - -// Registered plugins -var pluginsLoose = {}; - -var LooseParser = function LooseParser(input, options) { - if ( options === void 0 ) options = {}; - - this.toks = __acorn.tokenizer(input, options); - this.options = this.toks.options; - this.input = this.toks.input; - this.tok = this.last = {type: __acorn.tokTypes.eof, start: 0, end: 0}; - if (this.options.locations) { - var here = this.toks.curPosition(); - this.tok.loc = new __acorn.SourceLocation(this.toks, here, here); - } - this.ahead = []; // Tokens ahead - this.context = []; // Indentation contexted - this.curIndent = 0; - this.curLineStart = 0; - this.nextLineStart = this.lineEnd(this.curLineStart) + 1; - this.inAsync = false; - // Load plugins - this.options.pluginsLoose = options.pluginsLoose || {}; - this.loadPlugins(this.options.pluginsLoose); -}; - -LooseParser.prototype.startNode = function startNode () { - return new __acorn.Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null) -}; - -LooseParser.prototype.storeCurrentPos = function storeCurrentPos () { - return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start -}; - -LooseParser.prototype.startNodeAt = function startNodeAt (pos) { - if (this.options.locations) { - return new __acorn.Node(this.toks, pos[0], pos[1]) - } else { - return new __acorn.Node(this.toks, pos) - } -}; - -LooseParser.prototype.finishNode = function finishNode (node, type) { - node.type = type; - node.end = this.last.end; - if (this.options.locations) - { node.loc.end = this.last.loc.end; } - if (this.options.ranges) - { node.range[1] = this.last.end; } - return node -}; - -LooseParser.prototype.dummyNode = function dummyNode (type) { - var dummy = this.startNode(); - dummy.type = type; - dummy.end = dummy.start; - if (this.options.locations) - { dummy.loc.end = dummy.loc.start; } - if (this.options.ranges) - { dummy.range[1] = dummy.start; } - this.last = {type: __acorn.tokTypes.name, start: dummy.start, end: dummy.start, loc: dummy.loc}; - return dummy -}; - -LooseParser.prototype.dummyIdent = function dummyIdent () { - var dummy = this.dummyNode("Identifier"); - dummy.name = "✖"; - return dummy -}; - -LooseParser.prototype.dummyString = function dummyString () { - var dummy = this.dummyNode("Literal"); - dummy.value = dummy.raw = "✖"; - return dummy -}; - -LooseParser.prototype.eat = function eat (type) { - if (this.tok.type === type) { - this.next(); - return true - } else { - return false - } -}; - -LooseParser.prototype.isContextual = function isContextual (name) { - return this.tok.type === __acorn.tokTypes.name && this.tok.value === name -}; - -LooseParser.prototype.eatContextual = function eatContextual (name) { - return this.tok.value === name && this.eat(__acorn.tokTypes.name) -}; - -LooseParser.prototype.canInsertSemicolon = function canInsertSemicolon () { - return this.tok.type === __acorn.tokTypes.eof || this.tok.type === __acorn.tokTypes.braceR || - __acorn.lineBreak.test(this.input.slice(this.last.end, this.tok.start)) -}; - -LooseParser.prototype.semicolon = function semicolon () { - return this.eat(__acorn.tokTypes.semi) -}; - -LooseParser.prototype.expect = function expect (type) { - var this$1 = this; - - if (this.eat(type)) { return true } - for (var i = 1; i <= 2; i++) { - if (this$1.lookAhead(i).type == type) { - for (var j = 0; j < i; j++) { this$1.next(); } - return true - } - } -}; - -LooseParser.prototype.pushCx = function pushCx () { - this.context.push(this.curIndent); -}; - -LooseParser.prototype.popCx = function popCx () { - this.curIndent = this.context.pop(); -}; - -LooseParser.prototype.lineEnd = function lineEnd (pos) { - while (pos < this.input.length && !__acorn.isNewLine(this.input.charCodeAt(pos))) { ++pos; } - return pos -}; - -LooseParser.prototype.indentationAfter = function indentationAfter (pos) { - var this$1 = this; - - for (var count = 0;; ++pos) { - var ch = this$1.input.charCodeAt(pos); - if (ch === 32) { ++count; } - else if (ch === 9) { count += this$1.options.tabSize; } - else { return count } - } -}; - -LooseParser.prototype.closes = function closes (closeTok, indent, line, blockHeuristic) { - if (this.tok.type === closeTok || this.tok.type === __acorn.tokTypes.eof) { return true } - return line != this.curLineStart && this.curIndent < indent && this.tokenStartsLine() && - (!blockHeuristic || this.nextLineStart >= this.input.length || - this.indentationAfter(this.nextLineStart) < indent) -}; - -LooseParser.prototype.tokenStartsLine = function tokenStartsLine () { - var this$1 = this; - - for (var p = this.tok.start - 1; p >= this.curLineStart; --p) { - var ch = this$1.input.charCodeAt(p); - if (ch !== 9 && ch !== 32) { return false } - } - return true -}; - -LooseParser.prototype.extend = function extend (name, f) { - this[name] = f(this[name]); -}; - -LooseParser.prototype.loadPlugins = function loadPlugins (pluginConfigs) { - var this$1 = this; - - for (var name in pluginConfigs) { - var plugin = pluginsLoose[name]; - if (!plugin) { throw new Error("Plugin '" + name + "' not found") } - plugin(this$1, pluginConfigs[name]); - } -}; - -LooseParser.prototype.parse = function parse () { - this.next(); - return this.parseTopLevel() -}; - -var lp = LooseParser.prototype; - -function isSpace(ch) { - return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || __acorn.isNewLine(ch) -} - -lp.next = function() { - var this$1 = this; - - this.last = this.tok; - if (this.ahead.length) - { this.tok = this.ahead.shift(); } - else - { this.tok = this.readToken(); } - - if (this.tok.start >= this.nextLineStart) { - while (this.tok.start >= this.nextLineStart) { - this$1.curLineStart = this$1.nextLineStart; - this$1.nextLineStart = this$1.lineEnd(this$1.curLineStart) + 1; - } - this.curIndent = this.indentationAfter(this.curLineStart); - } -}; - -lp.readToken = function() { - var this$1 = this; - - for (;;) { - try { - this$1.toks.next(); - if (this$1.toks.type === __acorn.tokTypes.dot && - this$1.input.substr(this$1.toks.end, 1) === "." && - this$1.options.ecmaVersion >= 6) { - this$1.toks.end++; - this$1.toks.type = __acorn.tokTypes.ellipsis; - } - return new __acorn.Token(this$1.toks) - } catch (e) { - if (!(e instanceof SyntaxError)) { throw e } - - // Try to skip some text, based on the error message, and then continue - var msg = e.message, pos = e.raisedAt, replace = true; - if (/unterminated/i.test(msg)) { - pos = this$1.lineEnd(e.pos + 1); - if (/string/.test(msg)) { - replace = {start: e.pos, end: pos, type: __acorn.tokTypes.string, value: this$1.input.slice(e.pos + 1, pos)}; - } else if (/regular expr/i.test(msg)) { - var re = this$1.input.slice(e.pos, pos); - try { re = new RegExp(re); } catch (e) { /* ignore compilation error due to new syntax */ } - replace = {start: e.pos, end: pos, type: __acorn.tokTypes.regexp, value: re}; - } else if (/template/.test(msg)) { - replace = { - start: e.pos, - end: pos, - type: __acorn.tokTypes.template, - value: this$1.input.slice(e.pos, pos) - }; - } else { - replace = false; - } - } else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) { - while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) { ++pos; } - } else if (/character escape|expected hexadecimal/i.test(msg)) { - while (pos < this.input.length) { - var ch = this$1.input.charCodeAt(pos++); - if (ch === 34 || ch === 39 || __acorn.isNewLine(ch)) { break } - } - } else if (/unexpected character/i.test(msg)) { - pos++; - replace = false; - } else if (/regular expression/i.test(msg)) { - replace = true; - } else { - throw e - } - this$1.resetTo(pos); - if (replace === true) { replace = {start: pos, end: pos, type: __acorn.tokTypes.name, value: "✖"}; } - if (replace) { - if (this$1.options.locations) - { replace.loc = new __acorn.SourceLocation( - this$1.toks, - __acorn.getLineInfo(this$1.input, replace.start), - __acorn.getLineInfo(this$1.input, replace.end)); } - return replace - } - } - } -}; - -lp.resetTo = function(pos) { - var this$1 = this; - - this.toks.pos = pos; - var ch = this.input.charAt(pos - 1); - this.toks.exprAllowed = !ch || /[[{(,;:?/*=+\-~!|&%^<>]/.test(ch) || - /[enwfd]/.test(ch) && - /\b(keywords|case|else|return|throw|new|in|(instance|type)of|delete|void)$/.test(this.input.slice(pos - 10, pos)); - - if (this.options.locations) { - this.toks.curLine = 1; - this.toks.lineStart = __acorn.lineBreakG.lastIndex = 0; - var match; - while ((match = __acorn.lineBreakG.exec(this.input)) && match.index < pos) { - ++this$1.toks.curLine; - this$1.toks.lineStart = match.index + match[0].length; - } - } -}; - -lp.lookAhead = function(n) { - var this$1 = this; - - while (n > this.ahead.length) - { this$1.ahead.push(this$1.readToken()); } - return this.ahead[n - 1] -}; - -function isDummy(node) { return node.name == "✖" } - -var lp$1 = LooseParser.prototype; - -lp$1.parseTopLevel = function() { - var this$1 = this; - - var node = this.startNodeAt(this.options.locations ? [0, __acorn.getLineInfo(this.input, 0)] : 0); - node.body = []; - while (this.tok.type !== __acorn.tokTypes.eof) { node.body.push(this$1.parseStatement()); } - this.last = this.tok; - if (this.options.ecmaVersion >= 6) { - node.sourceType = this.options.sourceType; - } - return this.finishNode(node, "Program") -}; - -lp$1.parseStatement = function() { - var this$1 = this; - - var starttype = this.tok.type, node = this.startNode(), kind; - - if (this.toks.isLet()) { - starttype = __acorn.tokTypes._var; - kind = "let"; - } - - switch (starttype) { - case __acorn.tokTypes._break: case __acorn.tokTypes._continue: - this.next(); - var isBreak = starttype === __acorn.tokTypes._break; - if (this.semicolon() || this.canInsertSemicolon()) { - node.label = null; - } else { - node.label = this.tok.type === __acorn.tokTypes.name ? this.parseIdent() : null; - this.semicolon(); - } - return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement") - - case __acorn.tokTypes._debugger: - this.next(); - this.semicolon(); - return this.finishNode(node, "DebuggerStatement") - - case __acorn.tokTypes._do: - this.next(); - node.body = this.parseStatement(); - node.test = this.eat(__acorn.tokTypes._while) ? this.parseParenExpression() : this.dummyIdent(); - this.semicolon(); - return this.finishNode(node, "DoWhileStatement") - - case __acorn.tokTypes._for: - this.next(); - this.pushCx(); - this.expect(__acorn.tokTypes.parenL); - if (this.tok.type === __acorn.tokTypes.semi) { return this.parseFor(node, null) } - var isLet = this.toks.isLet(); - if (isLet || this.tok.type === __acorn.tokTypes._var || this.tok.type === __acorn.tokTypes._const) { - var init$1 = this.parseVar(true, isLet ? "let" : this.tok.value); - if (init$1.declarations.length === 1 && (this.tok.type === __acorn.tokTypes._in || this.isContextual("of"))) { - return this.parseForIn(node, init$1) - } - return this.parseFor(node, init$1) - } - var init = this.parseExpression(true); - if (this.tok.type === __acorn.tokTypes._in || this.isContextual("of")) - { return this.parseForIn(node, this.toAssignable(init)) } - return this.parseFor(node, init) - - case __acorn.tokTypes._function: - this.next(); - return this.parseFunction(node, true) - - case __acorn.tokTypes._if: - this.next(); - node.test = this.parseParenExpression(); - node.consequent = this.parseStatement(); - node.alternate = this.eat(__acorn.tokTypes._else) ? this.parseStatement() : null; - return this.finishNode(node, "IfStatement") - - case __acorn.tokTypes._return: - this.next(); - if (this.eat(__acorn.tokTypes.semi) || this.canInsertSemicolon()) { node.argument = null; } - else { node.argument = this.parseExpression(); this.semicolon(); } - return this.finishNode(node, "ReturnStatement") - - case __acorn.tokTypes._switch: - var blockIndent = this.curIndent, line = this.curLineStart; - this.next(); - node.discriminant = this.parseParenExpression(); - node.cases = []; - this.pushCx(); - this.expect(__acorn.tokTypes.braceL); - - var cur; - while (!this.closes(__acorn.tokTypes.braceR, blockIndent, line, true)) { - if (this$1.tok.type === __acorn.tokTypes._case || this$1.tok.type === __acorn.tokTypes._default) { - var isCase = this$1.tok.type === __acorn.tokTypes._case; - if (cur) { this$1.finishNode(cur, "SwitchCase"); } - node.cases.push(cur = this$1.startNode()); - cur.consequent = []; - this$1.next(); - if (isCase) { cur.test = this$1.parseExpression(); } - else { cur.test = null; } - this$1.expect(__acorn.tokTypes.colon); - } else { - if (!cur) { - node.cases.push(cur = this$1.startNode()); - cur.consequent = []; - cur.test = null; - } - cur.consequent.push(this$1.parseStatement()); - } - } - if (cur) { this.finishNode(cur, "SwitchCase"); } - this.popCx(); - this.eat(__acorn.tokTypes.braceR); - return this.finishNode(node, "SwitchStatement") - - case __acorn.tokTypes._throw: - this.next(); - node.argument = this.parseExpression(); - this.semicolon(); - return this.finishNode(node, "ThrowStatement") - - case __acorn.tokTypes._try: - this.next(); - node.block = this.parseBlock(); - node.handler = null; - if (this.tok.type === __acorn.tokTypes._catch) { - var clause = this.startNode(); - this.next(); - this.expect(__acorn.tokTypes.parenL); - clause.param = this.toAssignable(this.parseExprAtom(), true); - this.expect(__acorn.tokTypes.parenR); - clause.body = this.parseBlock(); - node.handler = this.finishNode(clause, "CatchClause"); - } - node.finalizer = this.eat(__acorn.tokTypes._finally) ? this.parseBlock() : null; - if (!node.handler && !node.finalizer) { return node.block } - return this.finishNode(node, "TryStatement") - - case __acorn.tokTypes._var: - case __acorn.tokTypes._const: - return this.parseVar(false, kind || this.tok.value) - - case __acorn.tokTypes._while: - this.next(); - node.test = this.parseParenExpression(); - node.body = this.parseStatement(); - return this.finishNode(node, "WhileStatement") - - case __acorn.tokTypes._with: - this.next(); - node.object = this.parseParenExpression(); - node.body = this.parseStatement(); - return this.finishNode(node, "WithStatement") - - case __acorn.tokTypes.braceL: - return this.parseBlock() - - case __acorn.tokTypes.semi: - this.next(); - return this.finishNode(node, "EmptyStatement") - - case __acorn.tokTypes._class: - return this.parseClass(true) - - case __acorn.tokTypes._import: - return this.parseImport() - - case __acorn.tokTypes._export: - return this.parseExport() - - default: - if (this.toks.isAsyncFunction()) { - this.next(); - this.next(); - return this.parseFunction(node, true, true) - } - var expr = this.parseExpression(); - if (isDummy(expr)) { - this.next(); - if (this.tok.type === __acorn.tokTypes.eof) { return this.finishNode(node, "EmptyStatement") } - return this.parseStatement() - } else if (starttype === __acorn.tokTypes.name && expr.type === "Identifier" && this.eat(__acorn.tokTypes.colon)) { - node.body = this.parseStatement(); - node.label = expr; - return this.finishNode(node, "LabeledStatement") - } else { - node.expression = expr; - this.semicolon(); - return this.finishNode(node, "ExpressionStatement") - } - } -}; - -lp$1.parseBlock = function() { - var this$1 = this; - - var node = this.startNode(); - this.pushCx(); - this.expect(__acorn.tokTypes.braceL); - var blockIndent = this.curIndent, line = this.curLineStart; - node.body = []; - while (!this.closes(__acorn.tokTypes.braceR, blockIndent, line, true)) - { node.body.push(this$1.parseStatement()); } - this.popCx(); - this.eat(__acorn.tokTypes.braceR); - return this.finishNode(node, "BlockStatement") -}; - -lp$1.parseFor = function(node, init) { - node.init = init; - node.test = node.update = null; - if (this.eat(__acorn.tokTypes.semi) && this.tok.type !== __acorn.tokTypes.semi) { node.test = this.parseExpression(); } - if (this.eat(__acorn.tokTypes.semi) && this.tok.type !== __acorn.tokTypes.parenR) { node.update = this.parseExpression(); } - this.popCx(); - this.expect(__acorn.tokTypes.parenR); - node.body = this.parseStatement(); - return this.finishNode(node, "ForStatement") -}; - -lp$1.parseForIn = function(node, init) { - var type = this.tok.type === __acorn.tokTypes._in ? "ForInStatement" : "ForOfStatement"; - this.next(); - node.left = init; - node.right = this.parseExpression(); - this.popCx(); - this.expect(__acorn.tokTypes.parenR); - node.body = this.parseStatement(); - return this.finishNode(node, type) -}; - -lp$1.parseVar = function(noIn, kind) { - var this$1 = this; - - var node = this.startNode(); - node.kind = kind; - this.next(); - node.declarations = []; - do { - var decl = this$1.startNode(); - decl.id = this$1.options.ecmaVersion >= 6 ? this$1.toAssignable(this$1.parseExprAtom(), true) : this$1.parseIdent(); - decl.init = this$1.eat(__acorn.tokTypes.eq) ? this$1.parseMaybeAssign(noIn) : null; - node.declarations.push(this$1.finishNode(decl, "VariableDeclarator")); - } while (this.eat(__acorn.tokTypes.comma)) - if (!node.declarations.length) { - var decl$1 = this.startNode(); - decl$1.id = this.dummyIdent(); - node.declarations.push(this.finishNode(decl$1, "VariableDeclarator")); - } - if (!noIn) { this.semicolon(); } - return this.finishNode(node, "VariableDeclaration") -}; - -lp$1.parseClass = function(isStatement) { - var this$1 = this; - - var node = this.startNode(); - this.next(); - if (this.tok.type === __acorn.tokTypes.name) { node.id = this.parseIdent(); } - else if (isStatement === true) { node.id = this.dummyIdent(); } - else { node.id = null; } - node.superClass = this.eat(__acorn.tokTypes._extends) ? this.parseExpression() : null; - node.body = this.startNode(); - node.body.body = []; - this.pushCx(); - var indent = this.curIndent + 1, line = this.curLineStart; - this.eat(__acorn.tokTypes.braceL); - if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart; } - while (!this.closes(__acorn.tokTypes.braceR, indent, line)) { - if (this$1.semicolon()) { continue } - var method = this$1.startNode(), isGenerator = (void 0), isAsync = (void 0); - if (this$1.options.ecmaVersion >= 6) { - method.static = false; - isGenerator = this$1.eat(__acorn.tokTypes.star); - } - this$1.parsePropertyName(method); - if (isDummy(method.key)) { if (isDummy(this$1.parseMaybeAssign())) { this$1.next(); } this$1.eat(__acorn.tokTypes.comma); continue } - if (method.key.type === "Identifier" && !method.computed && method.key.name === "static" && - (this$1.tok.type != __acorn.tokTypes.parenL && this$1.tok.type != __acorn.tokTypes.braceL)) { - method.static = true; - isGenerator = this$1.eat(__acorn.tokTypes.star); - this$1.parsePropertyName(method); - } else { - method.static = false; - } - if (!method.computed && - method.key.type === "Identifier" && method.key.name === "async" && this$1.tok.type !== __acorn.tokTypes.parenL && - !this$1.canInsertSemicolon()) { - this$1.parsePropertyName(method); - isAsync = true; - } else { - isAsync = false; - } - if (this$1.options.ecmaVersion >= 5 && method.key.type === "Identifier" && - !method.computed && (method.key.name === "get" || method.key.name === "set") && - this$1.tok.type !== __acorn.tokTypes.parenL && this$1.tok.type !== __acorn.tokTypes.braceL) { - method.kind = method.key.name; - this$1.parsePropertyName(method); - method.value = this$1.parseMethod(false); - } else { - if (!method.computed && !method.static && !isGenerator && !isAsync && ( - method.key.type === "Identifier" && method.key.name === "constructor" || - method.key.type === "Literal" && method.key.value === "constructor")) { - method.kind = "constructor"; - } else { - method.kind = "method"; - } - method.value = this$1.parseMethod(isGenerator, isAsync); - } - node.body.body.push(this$1.finishNode(method, "MethodDefinition")); - } - this.popCx(); - if (!this.eat(__acorn.tokTypes.braceR)) { - // If there is no closing brace, make the node span to the start - // of the next token (this is useful for Tern) - this.last.end = this.tok.start; - if (this.options.locations) { this.last.loc.end = this.tok.loc.start; } - } - this.semicolon(); - this.finishNode(node.body, "ClassBody"); - return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression") -}; - -lp$1.parseFunction = function(node, isStatement, isAsync) { - var oldInAsync = this.inAsync; - this.initFunction(node); - if (this.options.ecmaVersion >= 6) { - node.generator = this.eat(__acorn.tokTypes.star); - } - if (this.options.ecmaVersion >= 8) { - node.async = !!isAsync; - } - if (this.tok.type === __acorn.tokTypes.name) { node.id = this.parseIdent(); } - else if (isStatement === true) { node.id = this.dummyIdent(); } - this.inAsync = node.async; - node.params = this.parseFunctionParams(); - node.body = this.parseBlock(); - this.inAsync = oldInAsync; - return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression") -}; - -lp$1.parseExport = function() { - var node = this.startNode(); - this.next(); - if (this.eat(__acorn.tokTypes.star)) { - node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString(); - return this.finishNode(node, "ExportAllDeclaration") - } - if (this.eat(__acorn.tokTypes._default)) { - // export default (function foo() {}) // This is FunctionExpression. - var isAsync; - if (this.tok.type === __acorn.tokTypes._function || (isAsync = this.toks.isAsyncFunction())) { - var fNode = this.startNode(); - this.next(); - if (isAsync) { this.next(); } - node.declaration = this.parseFunction(fNode, "nullableID", isAsync); - } else if (this.tok.type === __acorn.tokTypes._class) { - node.declaration = this.parseClass("nullableID"); - } else { - node.declaration = this.parseMaybeAssign(); - this.semicolon(); - } - return this.finishNode(node, "ExportDefaultDeclaration") - } - if (this.tok.type.keyword || this.toks.isLet() || this.toks.isAsyncFunction()) { - node.declaration = this.parseStatement(); - node.specifiers = []; - node.source = null; - } else { - node.declaration = null; - node.specifiers = this.parseExportSpecifierList(); - node.source = this.eatContextual("from") ? this.parseExprAtom() : null; - this.semicolon(); - } - return this.finishNode(node, "ExportNamedDeclaration") -}; - -lp$1.parseImport = function() { - var node = this.startNode(); - this.next(); - if (this.tok.type === __acorn.tokTypes.string) { - node.specifiers = []; - node.source = this.parseExprAtom(); - node.kind = ""; - } else { - var elt; - if (this.tok.type === __acorn.tokTypes.name && this.tok.value !== "from") { - elt = this.startNode(); - elt.local = this.parseIdent(); - this.finishNode(elt, "ImportDefaultSpecifier"); - this.eat(__acorn.tokTypes.comma); - } - node.specifiers = this.parseImportSpecifierList(); - node.source = this.eatContextual("from") && this.tok.type == __acorn.tokTypes.string ? this.parseExprAtom() : this.dummyString(); - if (elt) { node.specifiers.unshift(elt); } - } - this.semicolon(); - return this.finishNode(node, "ImportDeclaration") -}; - -lp$1.parseImportSpecifierList = function() { - var this$1 = this; - - var elts = []; - if (this.tok.type === __acorn.tokTypes.star) { - var elt = this.startNode(); - this.next(); - elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent(); - elts.push(this.finishNode(elt, "ImportNamespaceSpecifier")); - } else { - var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart; - this.pushCx(); - this.eat(__acorn.tokTypes.braceL); - if (this.curLineStart > continuedLine) { continuedLine = this.curLineStart; } - while (!this.closes(__acorn.tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) { - var elt$1 = this$1.startNode(); - if (this$1.eat(__acorn.tokTypes.star)) { - elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : this$1.dummyIdent(); - this$1.finishNode(elt$1, "ImportNamespaceSpecifier"); - } else { - if (this$1.isContextual("from")) { break } - elt$1.imported = this$1.parseIdent(); - if (isDummy(elt$1.imported)) { break } - elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : elt$1.imported; - this$1.finishNode(elt$1, "ImportSpecifier"); - } - elts.push(elt$1); - this$1.eat(__acorn.tokTypes.comma); - } - this.eat(__acorn.tokTypes.braceR); - this.popCx(); - } - return elts -}; - -lp$1.parseExportSpecifierList = function() { - var this$1 = this; - - var elts = []; - var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart; - this.pushCx(); - this.eat(__acorn.tokTypes.braceL); - if (this.curLineStart > continuedLine) { continuedLine = this.curLineStart; } - while (!this.closes(__acorn.tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) { - if (this$1.isContextual("from")) { break } - var elt = this$1.startNode(); - elt.local = this$1.parseIdent(); - if (isDummy(elt.local)) { break } - elt.exported = this$1.eatContextual("as") ? this$1.parseIdent() : elt.local; - this$1.finishNode(elt, "ExportSpecifier"); - elts.push(elt); - this$1.eat(__acorn.tokTypes.comma); - } - this.eat(__acorn.tokTypes.braceR); - this.popCx(); - return elts -}; - -var lp$2 = LooseParser.prototype; - -lp$2.checkLVal = function(expr) { - if (!expr) { return expr } - switch (expr.type) { - case "Identifier": - case "MemberExpression": - return expr - - case "ParenthesizedExpression": - expr.expression = this.checkLVal(expr.expression); - return expr - - default: - return this.dummyIdent() - } -}; - -lp$2.parseExpression = function(noIn) { - var this$1 = this; - - var start = this.storeCurrentPos(); - var expr = this.parseMaybeAssign(noIn); - if (this.tok.type === __acorn.tokTypes.comma) { - var node = this.startNodeAt(start); - node.expressions = [expr]; - while (this.eat(__acorn.tokTypes.comma)) { node.expressions.push(this$1.parseMaybeAssign(noIn)); } - return this.finishNode(node, "SequenceExpression") - } - return expr -}; - -lp$2.parseParenExpression = function() { - this.pushCx(); - this.expect(__acorn.tokTypes.parenL); - var val = this.parseExpression(); - this.popCx(); - this.expect(__acorn.tokTypes.parenR); - return val -}; - -lp$2.parseMaybeAssign = function(noIn) { - if (this.toks.isContextual("yield")) { - var node = this.startNode(); - this.next(); - if (this.semicolon() || this.canInsertSemicolon() || (this.tok.type != __acorn.tokTypes.star && !this.tok.type.startsExpr)) { - node.delegate = false; - node.argument = null; - } else { - node.delegate = this.eat(__acorn.tokTypes.star); - node.argument = this.parseMaybeAssign(); - } - return this.finishNode(node, "YieldExpression") - } - - var start = this.storeCurrentPos(); - var left = this.parseMaybeConditional(noIn); - if (this.tok.type.isAssign) { - var node$1 = this.startNodeAt(start); - node$1.operator = this.tok.value; - node$1.left = this.tok.type === __acorn.tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left); - this.next(); - node$1.right = this.parseMaybeAssign(noIn); - return this.finishNode(node$1, "AssignmentExpression") - } - return left -}; - -lp$2.parseMaybeConditional = function(noIn) { - var start = this.storeCurrentPos(); - var expr = this.parseExprOps(noIn); - if (this.eat(__acorn.tokTypes.question)) { - var node = this.startNodeAt(start); - node.test = expr; - node.consequent = this.parseMaybeAssign(); - node.alternate = this.expect(__acorn.tokTypes.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent(); - return this.finishNode(node, "ConditionalExpression") - } - return expr -}; - -lp$2.parseExprOps = function(noIn) { - var start = this.storeCurrentPos(); - var indent = this.curIndent, line = this.curLineStart; - return this.parseExprOp(this.parseMaybeUnary(false), start, -1, noIn, indent, line) -}; - -lp$2.parseExprOp = function(left, start, minPrec, noIn, indent, line) { - if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) { return left } - var prec = this.tok.type.binop; - if (prec != null && (!noIn || this.tok.type !== __acorn.tokTypes._in)) { - if (prec > minPrec) { - var node = this.startNodeAt(start); - node.left = left; - node.operator = this.tok.value; - this.next(); - if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) { - node.right = this.dummyIdent(); - } else { - var rightStart = this.storeCurrentPos(); - node.right = this.parseExprOp(this.parseMaybeUnary(false), rightStart, prec, noIn, indent, line); - } - this.finishNode(node, /&&|\|\|/.test(node.operator) ? "LogicalExpression" : "BinaryExpression"); - return this.parseExprOp(node, start, minPrec, noIn, indent, line) - } - } - return left -}; - -lp$2.parseMaybeUnary = function(sawUnary) { - var this$1 = this; - - var start = this.storeCurrentPos(), expr; - if (this.options.ecmaVersion >= 8 && this.inAsync && this.toks.isContextual("await")) { - expr = this.parseAwait(); - sawUnary = true; - } else if (this.tok.type.prefix) { - var node = this.startNode(), update = this.tok.type === __acorn.tokTypes.incDec; - if (!update) { sawUnary = true; } - node.operator = this.tok.value; - node.prefix = true; - this.next(); - node.argument = this.parseMaybeUnary(true); - if (update) { node.argument = this.checkLVal(node.argument); } - expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression"); - } else if (this.tok.type === __acorn.tokTypes.ellipsis) { - var node$1 = this.startNode(); - this.next(); - node$1.argument = this.parseMaybeUnary(sawUnary); - expr = this.finishNode(node$1, "SpreadElement"); - } else { - expr = this.parseExprSubscripts(); - while (this.tok.type.postfix && !this.canInsertSemicolon()) { - var node$2 = this$1.startNodeAt(start); - node$2.operator = this$1.tok.value; - node$2.prefix = false; - node$2.argument = this$1.checkLVal(expr); - this$1.next(); - expr = this$1.finishNode(node$2, "UpdateExpression"); - } - } - - if (!sawUnary && this.eat(__acorn.tokTypes.starstar)) { - var node$3 = this.startNodeAt(start); - node$3.operator = "**"; - node$3.left = expr; - node$3.right = this.parseMaybeUnary(false); - return this.finishNode(node$3, "BinaryExpression") - } - - return expr -}; - -lp$2.parseExprSubscripts = function() { - var start = this.storeCurrentPos(); - return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart) -}; - -lp$2.parseSubscripts = function(base, start, noCalls, startIndent, line) { - var this$1 = this; - - for (;;) { - if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine()) { - if (this$1.tok.type == __acorn.tokTypes.dot && this$1.curIndent == startIndent) - { --startIndent; } - else - { return base } - } - - var maybeAsyncArrow = base.type === "Identifier" && base.name === "async" && !this$1.canInsertSemicolon(); - - if (this$1.eat(__acorn.tokTypes.dot)) { - var node = this$1.startNodeAt(start); - node.object = base; - if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine()) - { node.property = this$1.dummyIdent(); } - else - { node.property = this$1.parsePropertyAccessor() || this$1.dummyIdent(); } - node.computed = false; - base = this$1.finishNode(node, "MemberExpression"); - } else if (this$1.tok.type == __acorn.tokTypes.bracketL) { - this$1.pushCx(); - this$1.next(); - var node$1 = this$1.startNodeAt(start); - node$1.object = base; - node$1.property = this$1.parseExpression(); - node$1.computed = true; - this$1.popCx(); - this$1.expect(__acorn.tokTypes.bracketR); - base = this$1.finishNode(node$1, "MemberExpression"); - } else if (!noCalls && this$1.tok.type == __acorn.tokTypes.parenL) { - var exprList = this$1.parseExprList(__acorn.tokTypes.parenR); - if (maybeAsyncArrow && this$1.eat(__acorn.tokTypes.arrow)) - { return this$1.parseArrowExpression(this$1.startNodeAt(start), exprList, true) } - var node$2 = this$1.startNodeAt(start); - node$2.callee = base; - node$2.arguments = exprList; - base = this$1.finishNode(node$2, "CallExpression"); - } else if (this$1.tok.type == __acorn.tokTypes.backQuote) { - var node$3 = this$1.startNodeAt(start); - node$3.tag = base; - node$3.quasi = this$1.parseTemplate(); - base = this$1.finishNode(node$3, "TaggedTemplateExpression"); - } else { - return base - } - } -}; - -lp$2.parseExprAtom = function() { - var node; - switch (this.tok.type) { - case __acorn.tokTypes._this: - case __acorn.tokTypes._super: - var type = this.tok.type === __acorn.tokTypes._this ? "ThisExpression" : "Super"; - node = this.startNode(); - this.next(); - return this.finishNode(node, type) - - case __acorn.tokTypes.name: - var start = this.storeCurrentPos(); - var id = this.parseIdent(); - var isAsync = false; - if (id.name === "async" && !this.canInsertSemicolon()) { - if (this.eat(__acorn.tokTypes._function)) - { return this.parseFunction(this.startNodeAt(start), false, true) } - if (this.tok.type === __acorn.tokTypes.name) { - id = this.parseIdent(); - isAsync = true; - } - } - return this.eat(__acorn.tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id], isAsync) : id - - case __acorn.tokTypes.regexp: - node = this.startNode(); - var val = this.tok.value; - node.regex = {pattern: val.pattern, flags: val.flags}; - node.value = val.value; - node.raw = this.input.slice(this.tok.start, this.tok.end); - this.next(); - return this.finishNode(node, "Literal") - - case __acorn.tokTypes.num: case __acorn.tokTypes.string: - node = this.startNode(); - node.value = this.tok.value; - node.raw = this.input.slice(this.tok.start, this.tok.end); - this.next(); - return this.finishNode(node, "Literal") - - case __acorn.tokTypes._null: case __acorn.tokTypes._true: case __acorn.tokTypes._false: - node = this.startNode(); - node.value = this.tok.type === __acorn.tokTypes._null ? null : this.tok.type === __acorn.tokTypes._true; - node.raw = this.tok.type.keyword; - this.next(); - return this.finishNode(node, "Literal") - - case __acorn.tokTypes.parenL: - var parenStart = this.storeCurrentPos(); - this.next(); - var inner = this.parseExpression(); - this.expect(__acorn.tokTypes.parenR); - if (this.eat(__acorn.tokTypes.arrow)) { - // (a,)=>a // SequenceExpression makes dummy in the last hole. Drop the dummy. - var params = inner.expressions || [inner]; - if (params.length && isDummy(params[params.length - 1])) - { params.pop(); } - return this.parseArrowExpression(this.startNodeAt(parenStart), params) - } - if (this.options.preserveParens) { - var par = this.startNodeAt(parenStart); - par.expression = inner; - inner = this.finishNode(par, "ParenthesizedExpression"); - } - return inner - - case __acorn.tokTypes.bracketL: - node = this.startNode(); - node.elements = this.parseExprList(__acorn.tokTypes.bracketR, true); - return this.finishNode(node, "ArrayExpression") - - case __acorn.tokTypes.braceL: - return this.parseObj() - - case __acorn.tokTypes._class: - return this.parseClass(false) - - case __acorn.tokTypes._function: - node = this.startNode(); - this.next(); - return this.parseFunction(node, false) - - case __acorn.tokTypes._new: - return this.parseNew() - - case __acorn.tokTypes.backQuote: - return this.parseTemplate() - - default: - return this.dummyIdent() - } -}; - -lp$2.parseNew = function() { - var node = this.startNode(), startIndent = this.curIndent, line = this.curLineStart; - var meta = this.parseIdent(true); - if (this.options.ecmaVersion >= 6 && this.eat(__acorn.tokTypes.dot)) { - node.meta = meta; - node.property = this.parseIdent(true); - return this.finishNode(node, "MetaProperty") - } - var start = this.storeCurrentPos(); - node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line); - if (this.tok.type == __acorn.tokTypes.parenL) { - node.arguments = this.parseExprList(__acorn.tokTypes.parenR); - } else { - node.arguments = []; - } - return this.finishNode(node, "NewExpression") -}; - -lp$2.parseTemplateElement = function() { - var elem = this.startNode(); - - // The loose parser accepts invalid unicode escapes even in untagged templates. - if (this.tok.type === __acorn.tokTypes.invalidTemplate) { - elem.value = { - raw: this.tok.value, - cooked: null - }; - } else { - elem.value = { - raw: this.input.slice(this.tok.start, this.tok.end).replace(/\r\n?/g, "\n"), - cooked: this.tok.value - }; - } - this.next(); - elem.tail = this.tok.type === __acorn.tokTypes.backQuote; - return this.finishNode(elem, "TemplateElement") -}; - -lp$2.parseTemplate = function() { - var this$1 = this; - - var node = this.startNode(); - this.next(); - node.expressions = []; - var curElt = this.parseTemplateElement(); - node.quasis = [curElt]; - while (!curElt.tail) { - this$1.next(); - node.expressions.push(this$1.parseExpression()); - if (this$1.expect(__acorn.tokTypes.braceR)) { - curElt = this$1.parseTemplateElement(); - } else { - curElt = this$1.startNode(); - curElt.value = {cooked: "", raw: ""}; - curElt.tail = true; - this$1.finishNode(curElt, "TemplateElement"); - } - node.quasis.push(curElt); - } - this.expect(__acorn.tokTypes.backQuote); - return this.finishNode(node, "TemplateLiteral") -}; - -lp$2.parseObj = function() { - var this$1 = this; - - var node = this.startNode(); - node.properties = []; - this.pushCx(); - var indent = this.curIndent + 1, line = this.curLineStart; - this.eat(__acorn.tokTypes.braceL); - if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart; } - while (!this.closes(__acorn.tokTypes.braceR, indent, line)) { - var prop = this$1.startNode(), isGenerator = (void 0), isAsync = (void 0), start = (void 0); - if (this$1.options.ecmaVersion >= 6) { - start = this$1.storeCurrentPos(); - prop.method = false; - prop.shorthand = false; - isGenerator = this$1.eat(__acorn.tokTypes.star); - } - this$1.parsePropertyName(prop); - if (this$1.toks.isAsyncProp(prop)) { - this$1.parsePropertyName(prop); - isAsync = true; - } else { - isAsync = false; - } - if (isDummy(prop.key)) { if (isDummy(this$1.parseMaybeAssign())) { this$1.next(); } this$1.eat(__acorn.tokTypes.comma); continue } - if (this$1.eat(__acorn.tokTypes.colon)) { - prop.kind = "init"; - prop.value = this$1.parseMaybeAssign(); - } else if (this$1.options.ecmaVersion >= 6 && (this$1.tok.type === __acorn.tokTypes.parenL || this$1.tok.type === __acorn.tokTypes.braceL)) { - prop.kind = "init"; - prop.method = true; - prop.value = this$1.parseMethod(isGenerator, isAsync); - } else if (this$1.options.ecmaVersion >= 5 && prop.key.type === "Identifier" && - !prop.computed && (prop.key.name === "get" || prop.key.name === "set") && - (this$1.tok.type != __acorn.tokTypes.comma && this$1.tok.type != __acorn.tokTypes.braceR)) { - prop.kind = prop.key.name; - this$1.parsePropertyName(prop); - prop.value = this$1.parseMethod(false); - } else { - prop.kind = "init"; - if (this$1.options.ecmaVersion >= 6) { - if (this$1.eat(__acorn.tokTypes.eq)) { - var assign = this$1.startNodeAt(start); - assign.operator = "="; - assign.left = prop.key; - assign.right = this$1.parseMaybeAssign(); - prop.value = this$1.finishNode(assign, "AssignmentExpression"); - } else { - prop.value = prop.key; - } - } else { - prop.value = this$1.dummyIdent(); - } - prop.shorthand = true; - } - node.properties.push(this$1.finishNode(prop, "Property")); - this$1.eat(__acorn.tokTypes.comma); - } - this.popCx(); - if (!this.eat(__acorn.tokTypes.braceR)) { - // If there is no closing brace, make the node span to the start - // of the next token (this is useful for Tern) - this.last.end = this.tok.start; - if (this.options.locations) { this.last.loc.end = this.tok.loc.start; } - } - return this.finishNode(node, "ObjectExpression") -}; - -lp$2.parsePropertyName = function(prop) { - if (this.options.ecmaVersion >= 6) { - if (this.eat(__acorn.tokTypes.bracketL)) { - prop.computed = true; - prop.key = this.parseExpression(); - this.expect(__acorn.tokTypes.bracketR); - return - } else { - prop.computed = false; - } - } - var key = (this.tok.type === __acorn.tokTypes.num || this.tok.type === __acorn.tokTypes.string) ? this.parseExprAtom() : this.parseIdent(); - prop.key = key || this.dummyIdent(); -}; - -lp$2.parsePropertyAccessor = function() { - if (this.tok.type === __acorn.tokTypes.name || this.tok.type.keyword) { return this.parseIdent() } -}; - -lp$2.parseIdent = function() { - var name = this.tok.type === __acorn.tokTypes.name ? this.tok.value : this.tok.type.keyword; - if (!name) { return this.dummyIdent() } - var node = this.startNode(); - this.next(); - node.name = name; - return this.finishNode(node, "Identifier") -}; - -lp$2.initFunction = function(node) { - node.id = null; - node.params = []; - if (this.options.ecmaVersion >= 6) { - node.generator = false; - node.expression = false; - } - if (this.options.ecmaVersion >= 8) - { node.async = false; } -}; - -// Convert existing expression atom to assignable pattern -// if possible. - -lp$2.toAssignable = function(node, binding) { - var this$1 = this; - - if (!node || node.type == "Identifier" || (node.type == "MemberExpression" && !binding)) { - // Okay - } else if (node.type == "ParenthesizedExpression") { - this.toAssignable(node.expression, binding); - } else if (this.options.ecmaVersion < 6) { - return this.dummyIdent() - } else if (node.type == "ObjectExpression") { - node.type = "ObjectPattern"; - var props = node.properties; - for (var i = 0, list = props; i < list.length; i += 1) - { - var prop = list[i]; - - this$1.toAssignable(prop.value, binding); - } - } else if (node.type == "ArrayExpression") { - node.type = "ArrayPattern"; - this.toAssignableList(node.elements, binding); - } else if (node.type == "SpreadElement") { - node.type = "RestElement"; - this.toAssignable(node.argument, binding); - } else if (node.type == "AssignmentExpression") { - node.type = "AssignmentPattern"; - delete node.operator; - } else { - return this.dummyIdent() - } - return node -}; - -lp$2.toAssignableList = function(exprList, binding) { - var this$1 = this; - - for (var i = 0, list = exprList; i < list.length; i += 1) - { - var expr = list[i]; - - this$1.toAssignable(expr, binding); - } - return exprList -}; - -lp$2.parseFunctionParams = function(params) { - params = this.parseExprList(__acorn.tokTypes.parenR); - return this.toAssignableList(params, true) -}; - -lp$2.parseMethod = function(isGenerator, isAsync) { - var node = this.startNode(), oldInAsync = this.inAsync; - this.initFunction(node); - if (this.options.ecmaVersion >= 6) - { node.generator = !!isGenerator; } - if (this.options.ecmaVersion >= 8) - { node.async = !!isAsync; } - this.inAsync = node.async; - node.params = this.parseFunctionParams(); - node.expression = this.options.ecmaVersion >= 6 && this.tok.type !== __acorn.tokTypes.braceL; - node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock(); - this.inAsync = oldInAsync; - return this.finishNode(node, "FunctionExpression") -}; - -lp$2.parseArrowExpression = function(node, params, isAsync) { - var oldInAsync = this.inAsync; - this.initFunction(node); - if (this.options.ecmaVersion >= 8) - { node.async = !!isAsync; } - this.inAsync = node.async; - node.params = this.toAssignableList(params, true); - node.expression = this.tok.type !== __acorn.tokTypes.braceL; - node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock(); - this.inAsync = oldInAsync; - return this.finishNode(node, "ArrowFunctionExpression") -}; - -lp$2.parseExprList = function(close, allowEmpty) { - var this$1 = this; - - this.pushCx(); - var indent = this.curIndent, line = this.curLineStart, elts = []; - this.next(); // Opening bracket - while (!this.closes(close, indent + 1, line)) { - if (this$1.eat(__acorn.tokTypes.comma)) { - elts.push(allowEmpty ? null : this$1.dummyIdent()); - continue - } - var elt = this$1.parseMaybeAssign(); - if (isDummy(elt)) { - if (this$1.closes(close, indent, line)) { break } - this$1.next(); - } else { - elts.push(elt); - } - this$1.eat(__acorn.tokTypes.comma); - } - this.popCx(); - if (!this.eat(close)) { - // If there is no closing brace, make the node span to the start - // of the next token (this is useful for Tern) - this.last.end = this.tok.start; - if (this.options.locations) { this.last.loc.end = this.tok.loc.start; } - } - return elts -}; - -lp$2.parseAwait = function() { - var node = this.startNode(); - this.next(); - node.argument = this.parseMaybeUnary(); - return this.finishNode(node, "AwaitExpression") -}; - -// Acorn: Loose parser -// -// This module provides an alternative parser (`parse_dammit`) that -// exposes that same interface as `parse`, but will try to parse -// anything as JavaScript, repairing syntax error the best it can. -// There are circumstances in which it will raise an error and give -// up, but they are very rare. The resulting AST will be a mostly -// valid JavaScript AST (as per the [Mozilla parser API][api], except -// that: -// -// - Return outside functions is allowed -// -// - Label consistency (no conflicts, break only to existing labels) -// is not enforced. -// -// - Bogus Identifier nodes with a name of `"✖"` are inserted whenever -// the parser got too confused to return anything meaningful. -// -// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API -// -// The expected use for this is to *first* try `acorn.parse`, and only -// if that fails switch to `parse_dammit`. The loose parser might -// parse badly indented code incorrectly, so **don't** use it as -// your default parser. -// -// Quite a lot of acorn.js is duplicated here. The alternative was to -// add a *lot* of extra cruft to that file, making it less readable -// and slower. Copying and editing the code allowed me to make -// invasive changes and simplifications without creating a complicated -// tangle. - -__acorn.defaultOptions.tabSize = 4; - -// eslint-disable-next-line camelcase -function parse_dammit(input, options) { - return new LooseParser(input, options).parse() -} - -__acorn.addLooseExports(parse_dammit, LooseParser, pluginsLoose); - -exports.parse_dammit = parse_dammit; -exports.LooseParser = LooseParser; -exports.pluginsLoose = pluginsLoose; - -Object.defineProperty(exports, '__esModule', { value: true }); - -}))); - -},{"./acorn":2}],4:[function(require,module,exports){ -(function (global, factory) { - typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : - typeof define === 'function' && define.amd ? define(['exports'], factory) : - (factory((global.acorn = global.acorn || {}, global.acorn.walk = global.acorn.walk || {}))); -}(this, (function (exports) { 'use strict'; - -// AST walker module for Mozilla Parser API compatible trees - -// A simple walk is one where you simply specify callbacks to be -// called on specific nodes. The last two arguments are optional. A -// simple use would be -// -// walk.simple(myTree, { -// Expression: function(node) { ... } -// }); -// -// to do something with all expressions. All Parser API node types -// can be used to identify node types, as well as Expression, -// Statement, and ScopeBody, which denote categories of nodes. -// -// The base argument can be used to pass a custom (recursive) -// walker, and state can be used to give this walked an initial -// state. - -function simple(node, visitors, base, state, override) { - if (!base) { base = exports.base - ; }(function c(node, st, override) { - var type = override || node.type, found = visitors[type]; - base[type](node, st, c); - if (found) { found(node, st); } - })(node, state, override); -} - -// An ancestor walk keeps an array of ancestor nodes (including the -// current node) and passes them to the callback as third parameter -// (and also as state parameter when no other state is present). -function ancestor(node, visitors, base, state) { - if (!base) { base = exports.base; } - var ancestors = [];(function c(node, st, override) { - var type = override || node.type, found = visitors[type]; - var isNew = node != ancestors[ancestors.length - 1]; - if (isNew) { ancestors.push(node); } - base[type](node, st, c); - if (found) { found(node, st || ancestors, ancestors); } - if (isNew) { ancestors.pop(); } - })(node, state); -} - -// A recursive walk is one where your functions override the default -// walkers. They can modify and replace the state parameter that's -// threaded through the walk, and can opt how and whether to walk -// their child nodes (by calling their third argument on these -// nodes). -function recursive(node, state, funcs, base, override) { - var visitor = funcs ? exports.make(funcs, base) : base;(function c(node, st, override) { - visitor[override || node.type](node, st, c); - })(node, state, override); -} - -function makeTest(test) { - if (typeof test == "string") - { return function (type) { return type == test; } } - else if (!test) - { return function () { return true; } } - else - { return test } -} - -var Found = function Found(node, state) { this.node = node; this.state = state; }; - -// A full walk triggers the callback on each node -function full(node, callback, base, state, override) { - if (!base) { base = exports.base - ; }(function c(node, st, override) { - var type = override || node.type; - base[type](node, st, c); - callback(node, st, type); - })(node, state, override); -} - -// An fullAncestor walk is like an ancestor walk, but triggers -// the callback on each node -function fullAncestor(node, callback, base, state) { - if (!base) { base = exports.base; } - var ancestors = [];(function c(node, st, override) { - var type = override || node.type; - var isNew = node != ancestors[ancestors.length - 1]; - if (isNew) { ancestors.push(node); } - base[type](node, st, c); - callback(node, st || ancestors, ancestors, type); - if (isNew) { ancestors.pop(); } - })(node, state); -} - -// Find a node with a given start, end, and type (all are optional, -// null can be used as wildcard). Returns a {node, state} object, or -// undefined when it doesn't find a matching node. -function findNodeAt(node, start, end, test, base, state) { - test = makeTest(test); - if (!base) { base = exports.base; } - try { - (function c(node, st, override) { - var type = override || node.type; - if ((start == null || node.start <= start) && - (end == null || node.end >= end)) - { base[type](node, st, c); } - if ((start == null || node.start == start) && - (end == null || node.end == end) && - test(type, node)) - { throw new Found(node, st) } - })(node, state); - } catch (e) { - if (e instanceof Found) { return e } - throw e - } -} - -// Find the innermost node of a given type that contains the given -// position. Interface similar to findNodeAt. -function findNodeAround(node, pos, test, base, state) { - test = makeTest(test); - if (!base) { base = exports.base; } - try { - (function c(node, st, override) { - var type = override || node.type; - if (node.start > pos || node.end < pos) { return } - base[type](node, st, c); - if (test(type, node)) { throw new Found(node, st) } - })(node, state); - } catch (e) { - if (e instanceof Found) { return e } - throw e - } -} - -// Find the outermost matching node after a given position. -function findNodeAfter(node, pos, test, base, state) { - test = makeTest(test); - if (!base) { base = exports.base; } - try { - (function c(node, st, override) { - if (node.end < pos) { return } - var type = override || node.type; - if (node.start >= pos && test(type, node)) { throw new Found(node, st) } - base[type](node, st, c); - })(node, state); - } catch (e) { - if (e instanceof Found) { return e } - throw e - } -} - -// Find the outermost matching node before a given position. -function findNodeBefore(node, pos, test, base, state) { - test = makeTest(test); - if (!base) { base = exports.base; } - var max;(function c(node, st, override) { - if (node.start > pos) { return } - var type = override || node.type; - if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node)) - { max = new Found(node, st); } - base[type](node, st, c); - })(node, state); - return max -} - -// Fallback to an Object.create polyfill for older environments. -var create = Object.create || function(proto) { - function Ctor() {} - Ctor.prototype = proto; - return new Ctor -}; - -// Used to create a custom walker. Will fill in all missing node -// type properties with the defaults. -function make(funcs, base) { - if (!base) { base = exports.base; } - var visitor = create(base); - for (var type in funcs) { visitor[type] = funcs[type]; } - return visitor -} - -function skipThrough(node, st, c) { c(node, st); } -function ignore(_node, _st, _c) {} - -// Node walkers. - -var base = {}; - -base.Program = base.BlockStatement = function (node, st, c) { - for (var i = 0, list = node.body; i < list.length; i += 1) - { - var stmt = list[i]; - - c(stmt, st, "Statement"); - } -}; -base.Statement = skipThrough; -base.EmptyStatement = ignore; -base.ExpressionStatement = base.ParenthesizedExpression = - function (node, st, c) { return c(node.expression, st, "Expression"); }; -base.IfStatement = function (node, st, c) { - c(node.test, st, "Expression"); - c(node.consequent, st, "Statement"); - if (node.alternate) { c(node.alternate, st, "Statement"); } -}; -base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); }; -base.BreakStatement = base.ContinueStatement = ignore; -base.WithStatement = function (node, st, c) { - c(node.object, st, "Expression"); - c(node.body, st, "Statement"); -}; -base.SwitchStatement = function (node, st, c) { - c(node.discriminant, st, "Expression"); - for (var i = 0, list = node.cases; i < list.length; i += 1) { - var cs = list[i]; - - if (cs.test) { c(cs.test, st, "Expression"); } - for (var i$1 = 0, list$1 = cs.consequent; i$1 < list$1.length; i$1 += 1) - { - var cons = list$1[i$1]; - - c(cons, st, "Statement"); - } - } -}; -base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) { - if (node.argument) { c(node.argument, st, "Expression"); } -}; -base.ThrowStatement = base.SpreadElement = - function (node, st, c) { return c(node.argument, st, "Expression"); }; -base.TryStatement = function (node, st, c) { - c(node.block, st, "Statement"); - if (node.handler) { c(node.handler, st); } - if (node.finalizer) { c(node.finalizer, st, "Statement"); } -}; -base.CatchClause = function (node, st, c) { - c(node.param, st, "Pattern"); - c(node.body, st, "ScopeBody"); -}; -base.WhileStatement = base.DoWhileStatement = function (node, st, c) { - c(node.test, st, "Expression"); - c(node.body, st, "Statement"); -}; -base.ForStatement = function (node, st, c) { - if (node.init) { c(node.init, st, "ForInit"); } - if (node.test) { c(node.test, st, "Expression"); } - if (node.update) { c(node.update, st, "Expression"); } - c(node.body, st, "Statement"); -}; -base.ForInStatement = base.ForOfStatement = function (node, st, c) { - c(node.left, st, "ForInit"); - c(node.right, st, "Expression"); - c(node.body, st, "Statement"); -}; -base.ForInit = function (node, st, c) { - if (node.type == "VariableDeclaration") { c(node, st); } - else { c(node, st, "Expression"); } -}; -base.DebuggerStatement = ignore; - -base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); }; -base.VariableDeclaration = function (node, st, c) { - for (var i = 0, list = node.declarations; i < list.length; i += 1) - { - var decl = list[i]; - - c(decl, st); - } -}; -base.VariableDeclarator = function (node, st, c) { - c(node.id, st, "Pattern"); - if (node.init) { c(node.init, st, "Expression"); } -}; - -base.Function = function (node, st, c) { - if (node.id) { c(node.id, st, "Pattern"); } - for (var i = 0, list = node.params; i < list.length; i += 1) - { - var param = list[i]; - - c(param, st, "Pattern"); - } - c(node.body, st, node.expression ? "ScopeExpression" : "ScopeBody"); -}; -// FIXME drop these node types in next major version -// (They are awkward, and in ES6 every block can be a scope.) -base.ScopeBody = function (node, st, c) { return c(node, st, "Statement"); }; -base.ScopeExpression = function (node, st, c) { return c(node, st, "Expression"); }; - -base.Pattern = function (node, st, c) { - if (node.type == "Identifier") - { c(node, st, "VariablePattern"); } - else if (node.type == "MemberExpression") - { c(node, st, "MemberPattern"); } - else - { c(node, st); } -}; -base.VariablePattern = ignore; -base.MemberPattern = skipThrough; -base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); }; -base.ArrayPattern = function (node, st, c) { - for (var i = 0, list = node.elements; i < list.length; i += 1) { - var elt = list[i]; - - if (elt) { c(elt, st, "Pattern"); } - } -}; -base.ObjectPattern = function (node, st, c) { - for (var i = 0, list = node.properties; i < list.length; i += 1) - { - var prop = list[i]; - - c(prop.value, st, "Pattern"); - } -}; - -base.Expression = skipThrough; -base.ThisExpression = base.Super = base.MetaProperty = ignore; -base.ArrayExpression = function (node, st, c) { - for (var i = 0, list = node.elements; i < list.length; i += 1) { - var elt = list[i]; - - if (elt) { c(elt, st, "Expression"); } - } -}; -base.ObjectExpression = function (node, st, c) { - for (var i = 0, list = node.properties; i < list.length; i += 1) - { - var prop = list[i]; - - c(prop, st); - } -}; -base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration; -base.SequenceExpression = base.TemplateLiteral = function (node, st, c) { - for (var i = 0, list = node.expressions; i < list.length; i += 1) - { - var expr = list[i]; - - c(expr, st, "Expression"); - } -}; -base.UnaryExpression = base.UpdateExpression = function (node, st, c) { - c(node.argument, st, "Expression"); -}; -base.BinaryExpression = base.LogicalExpression = function (node, st, c) { - c(node.left, st, "Expression"); - c(node.right, st, "Expression"); -}; -base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) { - c(node.left, st, "Pattern"); - c(node.right, st, "Expression"); -}; -base.ConditionalExpression = function (node, st, c) { - c(node.test, st, "Expression"); - c(node.consequent, st, "Expression"); - c(node.alternate, st, "Expression"); -}; -base.NewExpression = base.CallExpression = function (node, st, c) { - c(node.callee, st, "Expression"); - if (node.arguments) - { for (var i = 0, list = node.arguments; i < list.length; i += 1) - { - var arg = list[i]; - - c(arg, st, "Expression"); - } } -}; -base.MemberExpression = function (node, st, c) { - c(node.object, st, "Expression"); - if (node.computed) { c(node.property, st, "Expression"); } -}; -base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) { - if (node.declaration) - { c(node.declaration, st, node.type == "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression"); } - if (node.source) { c(node.source, st, "Expression"); } -}; -base.ExportAllDeclaration = function (node, st, c) { - c(node.source, st, "Expression"); -}; -base.ImportDeclaration = function (node, st, c) { - for (var i = 0, list = node.specifiers; i < list.length; i += 1) - { - var spec = list[i]; - - c(spec, st); - } - c(node.source, st, "Expression"); -}; -base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore; - -base.TaggedTemplateExpression = function (node, st, c) { - c(node.tag, st, "Expression"); - c(node.quasi, st); -}; -base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); }; -base.Class = function (node, st, c) { - if (node.id) { c(node.id, st, "Pattern"); } - if (node.superClass) { c(node.superClass, st, "Expression"); } - for (var i = 0, list = node.body.body; i < list.length; i += 1) - { - var item = list[i]; - - c(item, st); - } -}; -base.MethodDefinition = base.Property = function (node, st, c) { - if (node.computed) { c(node.key, st, "Expression"); } - c(node.value, st, "Expression"); -}; - -exports.simple = simple; -exports.ancestor = ancestor; -exports.recursive = recursive; -exports.full = full; -exports.fullAncestor = fullAncestor; -exports.findNodeAt = findNodeAt; -exports.findNodeAround = findNodeAround; -exports.findNodeAfter = findNodeAfter; -exports.findNodeBefore = findNodeBefore; -exports.make = make; -exports.base = base; - -Object.defineProperty(exports, '__esModule', { value: true }); - -}))); - -},{}]},{},[1]); diff --git a/main_background.js b/main_background.js index 9e08976..5b745c1 100644 --- a/main_background.js +++ b/main_background.js @@ -20,10 +20,9 @@ * along with GNU LibreJS. If not, see <http://www.gnu.org/licenses/>. */ -var acorn_base = require("acorn"); -var acorn = require('acorn/dist/acorn_loose'); +var acorn = require('acorn'); +var acornLoose = require('acorn-loose'); var jssha = require('jssha'); -var walk = require("acorn/dist/walk"); var legacy_license_lib = require("./legacy_license_check.js"); var {ResponseProcessor} = require("./bg/ResponseProcessor"); var {Storage, ListStore} = require("./common/Storage"); @@ -462,7 +461,7 @@ function full_evaluate(script){ return [true,"Harmless null script"]; } - var ast = acorn.parse_dammit(script).body[0]; + var ast = acornLoose.parse(script).body[0]; var flag = false; var amtloops = 0; @@ -470,7 +469,7 @@ function full_evaluate(script){ var loopkeys = {"for":true,"if":true,"while":true,"switch":true}; var operators = {"||":true,"&&":true,"=":true,"==":true,"++":true,"--":true,"+=":true,"-=":true,"*":true}; try{ - var tokens = acorn_base.tokenizer(script); + var tokens = acorn.tokenizer(script); }catch(e){ console.warn("Tokenizer could not be initiated (probably invalid code)"); return [false,"Tokenizer could not be initiated (probably invalid code)"]; @@ -512,7 +511,7 @@ function full_evaluate(script){ return script.charAt(end+i) == "["; } var error_count = 0; - while(toke !== undefined && toke.type != acorn_base.tokTypes.eof){ + while(toke !== undefined && toke.type != acorn.tokTypes.eof){ if(toke.type.keyword !== undefined){ //dbg_print("Keyword:"); //dbg_print(toke); |