From d3a0cc3a8ba6dfeb64d3faeffdeb6845b60e5840 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <me@ypei.me>
Date: Sat, 20 Jan 2018 15:41:49 +0100
Subject: rearranged the dir for github

- removed tools and pdfs
- rearranged the projects dirs
- added md files
- other minor changes
---
 projects/12/StringTest/String.jack | 176 -------------------------------------
 1 file changed, 176 deletions(-)
 delete mode 100644 projects/12/StringTest/String.jack

(limited to 'projects/12/StringTest/String.jack')

diff --git a/projects/12/StringTest/String.jack b/projects/12/StringTest/String.jack
deleted file mode 100644
index 3ef40b2..0000000
--- a/projects/12/StringTest/String.jack
+++ /dev/null
@@ -1,176 +0,0 @@
-// This file is part of www.nand2tetris.org
-// and the book "The Elements of Computing Systems"
-// by Nisan and Schocken, MIT Press.
-// File name: projects/12/String.jack
-
-/**
- * Represents character strings. In addition for constructing and disposing
- * strings, the class features methods for getting and setting individual
- * characters of the string, for erasing the string's last character,
- * for appending a character to the string's end, and more typical
- * string-oriented operations.
- */
-class String {
-    field int maxLen;
-    field int len;
-    field Array s;
-
-    /** constructs a new empty string with a maximum length of maxLength
-     *  and initial length of 0. */
-    constructor String new(int maxLength) {
-        if (maxLength > 0) {
-            let s = Array.new(maxLength);
-        }
-        let maxLen = maxLength;
-        let len = 0;
-        return this;
-    }
-
-    /** Disposes this string. */
-    method void dispose() {
-        if (maxLen > 0) {
-            do s.dispose();
-        }
-        do Memory.deAlloc(this);
-        return;
-    }
-
-    /** Returns the current length of this string. */
-    method int length() {
-        return len;
-    }
-
-    /** Returns the character at the j-th location of this string. */
-    method char charAt(int j) {
-        if ((j < 0) | (j + 1 > len)){
-            do Output.printString("String.charAt: index out of range!");
-            do Sys.error(5);
-        }
-        return s[j];
-    }
-
-    /** Sets the character at the j-th location of this string to c. */
-    method void setCharAt(int j, char c) {
-        if ((j < 0) | (j + 1 > len)){
-            do Output.printString("String.setCharAt: index out of range!");
-            do Sys.error(5);
-        }
-        let s[j] = c;
-        return;
-    }
-
-    /** Appends c to this string's end and returns this string. */
-    method String appendChar(char c) {
-        if (len = maxLen) {
-            do Output.printString("String.appendChar: reached max length!");
-            do Sys.error(5);
-        }
-        let s[len] = c;
-        let len = len + 1;
-        return this;
-    }
-
-    /** Erases the last character from this string. */
-    method void eraseLastChar() {
-        if (len = 0){
-            do Output.printString("String.eraseLastChar: string is already empty!");
-            do Sys.error(5);
-        }
-        let len = len - 1;
-        return;
-    }
-
-    /** Returns the integer value of this string, 
-     *  until a non-digit character is detected. */
-    method int intValue() {
-        var int n, i;
-        var char c;
-        var boolean neg, done;
-        let n = 0;
-        if (s[0] = 45) {
-            let i = 1;
-            let neg = true;
-        } else {
-            let i = 0;
-            let neg = false;
-        }
-        let c = s[i];
-        if ((c < 48) | (c > 57)) {
-            do Sys.error(3);
-            do Output.printString("String.intValue: the input data is not number!");
-        }
-        let done = false;
-        while ((~done) & (i < len)) {
-            let c = s[i];
-            if ((c > 47) & (c < 58)) {
-                let n = n * 10 + (c - 48);
-            } else {
-                let done = true;
-            }
-            let i = i + 1;
-        }
-        if (neg) {
-            return -n;
-        } else {
-            return n;
-        }
-
-    }
-
-    /** Sets this string to hold a representation of the given value. */
-    method void setInt(int val) {           //change Output.printInt after this
-        var int x, i, y;
-        var boolean neg;
-        if (val < 0) { 
-            let neg = true; 
-            let len = 2;
-        } else {
-            let neg = false;
-            let len = 1;
-        }
-        let x = Math.abs(val);
-        if (x > 9999) {
-            let len = len + 4;
-        } else { if (x > 999) {
-            let len = len + 3;
-        } else { if (x > 99) {
-            let len = len + 2;
-        } else { if (x > 9) {
-            let len = len + 1;
-        }}}}
-        if (len > maxLen) {
-            do Output.printString("String.setInt: val is too big for the string!");
-            do Sys.error(5);
-        }
-        if (x = 0) {
-            do setCharAt(0, 48);
-            return;
-        }
-        if (neg) {
-            do setCharAt(0, 45);
-        }
-        let i = len - 1;
-        while (x > 0) {
-            let y = x / 10;
-            do setCharAt(i, x - (y * 10) + 48);
-            let x = y;
-            let i = i - 1;
-        }
-        return;
-    }
-
-    /** Returns the new line character. */
-    function char newLine() {
-        return 128;
-    }
-
-    /** Returns the backspace character. */
-    function char backSpace() {
-        return 129;
-    }
-
-    /** Returns the double quote (") character. */
-    function char doubleQuote() {
-        return 34;
-    }
-}
-- 
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