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CoffeeScript 1.1.2
This commit is contained in:
Jeremy Ashkenas
parent
1f69200d06
commit
1a652a9736
21 changed files with 495 additions and 361 deletions
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@ -62,8 +62,7 @@ though <code>is</code> means <code>===</code> otherwise.</p> </td>
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<span class="o">not</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">spaced</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">'@'</span><span class="p">)</span>
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<span class="nv">tag = </span><span class="s1">'IDENTIFIER'</span>
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<span class="k">if</span> <span class="nx">id</span> <span class="k">in</span> <span class="nx">JS_KEYWORDS</span> <span class="o">or</span>
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<span class="o">not</span> <span class="nx">forcedIdentifier</span> <span class="o">and</span> <span class="nx">id</span> <span class="k">in</span> <span class="nx">COFFEE_KEYWORDS</span>
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<span class="k">if</span> <span class="o">not</span> <span class="nx">forcedIdentifier</span> <span class="o">and</span> <span class="p">(</span><span class="nx">id</span> <span class="k">in</span> <span class="nx">JS_KEYWORDS</span> <span class="o">or</span> <span class="nx">id</span> <span class="k">in</span> <span class="nx">COFFEE_KEYWORDS</span><span class="p">)</span>
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<span class="nv">tag = </span><span class="nx">id</span><span class="p">.</span><span class="nx">toUpperCase</span><span class="p">()</span>
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<span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">'WHEN'</span> <span class="o">and</span> <span class="nx">@tag</span><span class="p">()</span> <span class="k">in</span> <span class="nx">LINE_BREAK</span>
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<span class="nv">tag = </span><span class="s1">'LEADING_WHEN'</span>
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@ -149,7 +148,11 @@ preserve whitespace, but ignore indentation to the left.</p> </td>
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to distinguish from division, so we borrow some basic heuristics from
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JavaScript and Ruby.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">regexToken</span><span class="o">:</span> <span class="o">-></span>
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<span class="k">return</span> <span class="mi">0</span> <span class="k">if</span> <span class="nx">@chunk</span><span class="p">.</span><span class="nx">charAt</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span> <span class="o">isnt</span> <span class="s1">'/'</span>
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<span class="k">return</span> <span class="nx">@heregexToken</span> <span class="nx">match</span> <span class="k">if</span> <span class="nv">match = </span><span class="nx">HEREGEX</span><span class="p">.</span><span class="nx">exec</span> <span class="nx">@chunk</span>
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<span class="k">if</span> <span class="nv">match = </span><span class="nx">HEREGEX</span><span class="p">.</span><span class="nx">exec</span> <span class="nx">@chunk</span>
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<span class="nv">length = </span><span class="nx">@heregexToken</span> <span class="nx">match</span>
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<span class="nx">@line</span> <span class="o">+=</span> <span class="nx">count</span> <span class="nx">match</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="s1">'\n'</span>
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<span class="k">return</span> <span class="nx">length</span>
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<span class="nv">prev = </span><span class="nx">last</span> <span class="nx">@tokens</span>
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<span class="k">return</span> <span class="mi">0</span> <span class="k">if</span> <span class="nx">prev</span> <span class="o">and</span> <span class="p">(</span><span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">in</span> <span class="p">(</span><span class="k">if</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">spaced</span> <span class="k">then</span> <span class="nx">NOT_REGEX</span> <span class="k">else</span> <span class="nx">NOT_SPACED_REGEX</span><span class="p">))</span>
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<span class="k">return</span> <span class="mi">0</span> <span class="nx">unless</span> <span class="nv">match = </span><span class="nx">REGEX</span><span class="p">.</span><span class="nx">exec</span> <span class="nx">@chunk</span>
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@ -305,6 +308,7 @@ parameters specially in order to make things easier for the parser.</p>
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<span class="k">else</span> <span class="k">if</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">'('</span>
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<span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'PARAM_START'</span>
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<span class="k">return</span> <span class="k">this</span>
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<span class="k">else</span> <span class="k">return</span> <span class="k">this</span>
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<span class="k">this</span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-25">¶</a> </div> <p>Close up all remaining open blocks at the end of the file.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">closeIndentation</span><span class="o">:</span> <span class="o">-></span>
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<span class="nx">@outdentToken</span> <span class="nx">@indent</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-26">¶</a> </div> <p>The error for when you try to use a forbidden word in JavaScript as
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an identifier.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">identifierError</span><span class="o">:</span> <span class="p">(</span><span class="nx">word</span><span class="p">)</span> <span class="o">-></span>
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@ -328,6 +332,8 @@ interpolations within strings, ad infinitum.</p> </td> <
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<span class="k">continue</span>
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<span class="k">if</span> <span class="nx">end</span> <span class="o">is</span> <span class="s1">'}'</span> <span class="o">and</span> <span class="nx">letter</span> <span class="k">in</span> <span class="p">[</span><span class="s1">'"'</span><span class="p">,</span> <span class="s2">"'"</span><span class="p">]</span>
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<span class="nx">stack</span><span class="p">.</span><span class="nx">push</span> <span class="nv">end = </span><span class="nx">letter</span>
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<span class="k">else</span> <span class="k">if</span> <span class="nx">end</span> <span class="o">is</span> <span class="s1">'}'</span> <span class="o">and</span> <span class="nx">letter</span> <span class="o">is</span> <span class="s1">'/'</span> <span class="o">and</span> <span class="nv">match = </span><span class="p">(</span><span class="nx">HEREGEX</span><span class="p">.</span><span class="nx">exec</span><span class="p">(</span><span class="nx">str</span><span class="p">.</span><span class="nx">slice</span> <span class="nx">i</span><span class="p">)</span> <span class="o">or</span> <span class="nx">REGEX</span><span class="p">.</span><span class="nx">exec</span><span class="p">(</span><span class="nx">str</span><span class="p">.</span><span class="nx">slice</span> <span class="nx">i</span><span class="p">))</span>
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<span class="nx">i</span> <span class="o">+=</span> <span class="nx">match</span><span class="p">[</span><span class="mi">0</span><span class="p">].</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
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<span class="k">else</span> <span class="k">if</span> <span class="nx">end</span> <span class="o">is</span> <span class="s1">'}'</span> <span class="o">and</span> <span class="nx">letter</span> <span class="o">is</span> <span class="s1">'{'</span>
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<span class="nx">stack</span><span class="p">.</span><span class="nx">push</span> <span class="nv">end = </span><span class="s1">'}'</span>
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<span class="k">else</span> <span class="k">if</span> <span class="nx">end</span> <span class="o">is</span> <span class="s1">'"'</span> <span class="o">and</span> <span class="nx">prev</span> <span class="o">is</span> <span class="s1">'#'</span> <span class="o">and</span> <span class="nx">letter</span> <span class="o">is</span> <span class="s1">'{'</span>
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@ -409,7 +415,7 @@ token stream.</p> </td> <td class="code">
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<span class="kc">no</span> <span class="o">:</span> <span class="s1">'false'</span>
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<span class="kc">on</span> <span class="o">:</span> <span class="s1">'true'</span>
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<span class="kc">off</span> <span class="o">:</span> <span class="s1">'false'</span>
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<span class="nv">COFFEE_ALIASES = </span><span class="p">(</span><span class="nx">key</span> <span class="k">for</span> <span class="nx">key</span> <span class="k">of</span> <span class="nx">COFFEE_ALIAS_MAP</span><span class="p">)</span>
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<span class="nv">COFFEE_KEYWORDS = </span><span class="nx">COFFEE_KEYWORDS</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">COFFEE_ALIASES</span></pre></div> </td> </tr> <tr id="section-40"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-40">¶</a> </div> <p>The list of keywords that are reserved by JavaScript, but not used, or are
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used by CoffeeScript internally. We throw an error when these are encountered,
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@ -427,7 +433,7 @@ be used as identifiers or properties.</p> </td> <td clas
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<span class="nv">NUMBER = </span><span class="err">///</span>
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<span class="o">^</span> <span class="mi">0</span><span class="nx">x</span><span class="p">[</span><span class="err">\</span><span class="nx">da</span><span class="o">-</span><span class="nx">f</span><span class="p">]</span><span class="o">+</span> <span class="o">|</span> <span class="c1"># hex</span>
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<span class="o">^</span> <span class="p">(</span><span class="o">?:</span> <span class="err">\</span><span class="nx">d</span><span class="o">+</span><span class="p">(</span><span class="err">\</span><span class="p">.</span><span class="err">\</span><span class="nx">d</span><span class="o">+</span><span class="p">)</span><span class="o">?</span> <span class="o">|</span> <span class="err">\</span><span class="p">.</span><span class="err">\</span><span class="nx">d</span><span class="o">+</span> <span class="p">)</span> <span class="p">(</span><span class="o">?:</span><span class="nx">e</span><span class="p">[</span><span class="o">+-</span><span class="p">]</span><span class="o">?</span><span class="err">\</span><span class="nx">d</span><span class="o">+</span><span class="p">)</span><span class="o">?</span> <span class="c1"># decimal</span>
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<span class="o">^</span> <span class="err">\</span><span class="nx">d</span><span class="o">*</span><span class="err">\</span><span class="p">.</span><span class="o">?</span><span class="err">\</span><span class="nx">d</span><span class="o">+</span> <span class="p">(</span><span class="o">?:</span><span class="nx">e</span><span class="p">[</span><span class="o">+-</span><span class="p">]</span><span class="o">?</span><span class="err">\</span><span class="nx">d</span><span class="o">+</span><span class="p">)</span><span class="o">?</span> <span class="c1"># decimal</span>
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<span class="err">///i</span>
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<span class="nv">HEREDOC = </span><span class="err">/// ^ ("""|''') ([\s\S]*?) (?:\n[^\n\S]*)? \1 ///</span>
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@ -492,7 +498,7 @@ a division operator might.</p>
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<p>See: http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions</p>
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<p>Our list is shorter, due to sans-parentheses method calls.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">NOT_REGEX = </span><span class="p">[</span><span class="s1">'NUMBER'</span><span class="p">,</span> <span class="s1">'REGEX'</span><span class="p">,</span> <span class="s1">'BOOL'</span><span class="p">,</span> <span class="s1">'++'</span><span class="p">,</span> <span class="s1">'--'</span><span class="p">,</span> <span class="s1">']'</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-54"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-54">¶</a> </div> <p>If the previous token is not spaced, there are more preceding tokens that
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force a division parse:</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">NOT_SPACED_REGEX = </span><span class="nx">NOT_REGEX</span><span class="p">.</span><span class="nx">concat</span> <span class="s1">')'</span><span class="p">,</span> <span class="s1">'}'</span><span class="p">,</span> <span class="s1">'THIS'</span><span class="p">,</span> <span class="s1">'IDENTIFIER'</span><span class="p">,</span> <span class="s1">'STRING'</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-55">¶</a> </div> <p>Tokens which could legitimately be invoked or indexed. A opening
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force a division parse:</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">NOT_SPACED_REGEX = </span><span class="nx">NOT_REGEX</span><span class="p">.</span><span class="nx">concat</span> <span class="s1">')'</span><span class="p">,</span> <span class="s1">'}'</span><span class="p">,</span> <span class="s1">'THIS'</span><span class="p">,</span> <span class="s1">'IDENTIFIER'</span><span class="p">,</span> <span class="s1">'STRING'</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-55">¶</a> </div> <p>Tokens which could legitimately be invoked or indexed. An opening
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parentheses or bracket following these tokens will be recorded as the start
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of a function invocation or indexing operation.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">CALLABLE = </span><span class="p">[</span><span class="s1">'IDENTIFIER'</span><span class="p">,</span> <span class="s1">'STRING'</span><span class="p">,</span> <span class="s1">'REGEX'</span><span class="p">,</span> <span class="s1">')'</span><span class="p">,</span> <span class="s1">']'</span><span class="p">,</span> <span class="s1">'}'</span><span class="p">,</span> <span class="s1">'?'</span><span class="p">,</span> <span class="s1">'::'</span><span class="p">,</span> <span class="s1">'@'</span><span class="p">,</span> <span class="s1">'THIS'</span><span class="p">,</span> <span class="s1">'SUPER'</span><span class="p">]</span>
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<span class="nv">INDEXABLE = </span><span class="nx">CALLABLE</span><span class="p">.</span><span class="nx">concat</span> <span class="s1">'NUMBER'</span><span class="p">,</span> <span class="s1">'BOOL'</span></pre></div> </td> </tr> <tr id="section-56"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-56">¶</a> </div> <p>Tokens that, when immediately preceding a <code>WHEN</code>, indicate that the <code>WHEN</code>
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