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authorAlec Theriault <alec.theriault@gmail.com>2019-01-31 01:37:25 -0800
committerGitHub <noreply@github.com>2019-01-31 01:37:25 -0800
commit1b26460fb3b5df5215cc1e6715661cbc7c950085 (patch)
tree0b5ac6285ecf432021e8365567d48eeb6249f44b /hypsrc-test/ref/src/ClangCppBug.html
parent4c02498a24e6ceb775528bed043b66340296ad06 (diff)
Use `.hie` files for the Hyperlinker backend (#977)
# Summary This is a large architectural change to the Hyperlinker. * extract link (and now also type) information from `.hie` instead of doing ad-hoc SYB traversals of the `RenamedSource`. Also adds a superb type-on-hover feature (#715). * re-engineer the lexer to avoid needless string conversions. By going directly through GHC's `P` monad and taking bytestring slices, we avoid a ton of allocation and have better handling of position pragmas and CPP. In terms of performance, the Haddock side of things has gotten _much_ more efficient. Unfortunately, much of this is cancelled out by the increased GHC workload for generating `.hie` files. For the full set of boot libs (including `ghc`-the-library) * the sum of total time went down by 9-10% overall * the sum of total allocations went down by 6-7% # Motivation Haddock is moving towards working entirely over `.hi` and `.hie` files. This change means we no longer need the `RenamedSource` from `TypecheckedModule` (something which is _not_ in `.hi` files). # Details Along the way a bunch of things were fixed: * Cross package (and other) links are now more reliable (#496) * The lexer tries to recover from errors on every line (instead of at CPP boundaries) * `LINE`/`COLUMN` pragmas are taken into account * filter out zero length tokens before rendering * avoid recomputing the `ModuleName`-based `SrcMap` * remove the last use of `Documentation.Haddock.Utf8` (see #998) * restructure temporary folder logic for `.hi`/`.hie` model
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+<html xmlns="http://www.w3.org/1999/xhtml"
+><head
+ ><link rel="stylesheet" type="text/css" href="style.css"
+ /><script type="text/javascript" src="highlight.js"
+ ></script
+ ></head
+ ><body
+ ><pre
+ ><span class="hs-pragma"
+ >{-# LANGUAGE CPP #-}</span
+ ><span
+ >
+</span
+ ><span id="line-2"
+ ></span
+ ><span class="hs-keyword"
+ >module</span
+ ><span
+ > </span
+ ><span class="hs-identifier"
+ >ClangCppBug</span
+ ><span
+ > </span
+ ><span class="hs-keyword"
+ >where</span
+ ><span
+ >
+</span
+ ><span id="line-3"
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-4"
+ ></span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#foo"
+ ><span class="hs-identifier hs-type"
+ >foo</span
+ ></a
+ ></span
+ ><span
+ > </span
+ ><span class="hs-glyph"
+ >::</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><span class="hs-identifier hs-type"
+ >Int</span
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-5"
+ ></span
+ ><span id="foo"
+ ><span class="annot"
+ ><span class="annottext"
+ >foo :: Int
+</span
+ ><a href="ClangCppBug.html#foo"
+ ><span class="hs-identifier hs-var hs-var"
+ >foo</span
+ ></a
+ ></span
+ ></span
+ ><span
+ > </span
+ ><span class="hs-glyph"
+ >=</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><span class="hs-number"
+ >1</span
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-6"
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-7"
+ ></span
+ ><span class="hs-comment"
+ >-- Clang doesn't mind these:</span
+ ><span class="hs-cpp"
+ >
+#define BAX 2
+</span
+ ><span class="hs-pragma"
+ >{-# INLINE</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#bar"
+ ><span class="hs-pragma hs-type"
+ >bar</span
+ ></a
+ ></span
+ ><span
+ > </span
+ ><span class="hs-pragma"
+ >#-}</span
+ ><span
+ >
+</span
+ ><span id="line-10"
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-11"
+ ></span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#bar"
+ ><span class="hs-identifier hs-type"
+ >bar</span
+ ></a
+ ></span
+ ><span
+ > </span
+ ><span class="hs-glyph"
+ >::</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><span class="hs-identifier hs-type"
+ >Int</span
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-12"
+ ></span
+ ><span id="bar"
+ ><span class="annot"
+ ><span class="annottext"
+ >bar :: Int
+</span
+ ><a href="ClangCppBug.html#bar"
+ ><span class="hs-identifier hs-var hs-var"
+ >bar</span
+ ></a
+ ></span
+ ></span
+ ><span
+ > </span
+ ><span class="hs-glyph"
+ >=</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><span class="hs-number"
+ >3</span
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-13"
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-14"
+ ></span
+ ><span class="hs-comment"
+ >-- But it doesn't like this:</span
+ ><span
+ >
+</span
+ ><span id="line-15"
+ ></span
+ ><span class="hs-pragma"
+ >{-# RULES</span
+ ><span
+ >
+</span
+ ><span id="line-16"
+ ></span
+ ><span class="annot"
+ ><span class="hs-pragma"
+ >&quot;bar/qux&quot;</span
+ ></span
+ ><span
+ > </span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#bar"
+ ><span class="hs-pragma hs-type"
+ >bar</span
+ ></a
+ ></span
+ ><span
+ > </span
+ ><span class="hs-pragma"
+ >=</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#qux"
+ ><span class="hs-pragma hs-type"
+ >qux</span
+ ></a
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-17"
+ ></span
+ ><span class="annot"
+ ><span class="hs-pragma"
+ >&quot;qux/foo&quot;</span
+ ></span
+ ><span
+ > </span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#qux"
+ ><span class="hs-pragma hs-type"
+ >qux</span
+ ></a
+ ></span
+ ><span
+ > </span
+ ><span class="hs-pragma"
+ >=</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#foo"
+ ><span class="hs-pragma hs-type"
+ >foo</span
+ ></a
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-18"
+ ></span
+ ><span
+ > </span
+ ><span class="hs-pragma"
+ >#-}</span
+ ><span
+ >
+</span
+ ><span id="line-20"
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-21"
+ ></span
+ ><span class="annot"
+ ><a href="ClangCppBug.html#qux"
+ ><span class="hs-identifier hs-type"
+ >qux</span
+ ></a
+ ></span
+ ><span
+ > </span
+ ><span class="hs-glyph"
+ >::</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><span class="hs-identifier hs-type"
+ >Int</span
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-22"
+ ></span
+ ><span id="qux"
+ ><span class="annot"
+ ><span class="annottext"
+ >qux :: Int
+</span
+ ><a href="ClangCppBug.html#qux"
+ ><span class="hs-identifier hs-var hs-var"
+ >qux</span
+ ></a
+ ></span
+ ></span
+ ><span
+ > </span
+ ><span class="hs-glyph"
+ >=</span
+ ><span
+ > </span
+ ><span class="annot"
+ ><span class="hs-number"
+ >88</span
+ ></span
+ ><span
+ >
+</span
+ ><span id="line-23"
+ ></span
+ ></pre
+ ></body
+ ></html
+> \ No newline at end of file