785 lines
36 KiB
HTML
785 lines
36 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>coffee-script.coffee</title>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;">
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<link rel="stylesheet" media="all" href="docco.css" />
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</head>
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<body>
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<div id="container">
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<div id="background"></div>
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<ul id="jump_to">
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<a class="large" href="javascript:void(0);">Jump To …</a>
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browser.coffee
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cake.coffee
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coffee-script.coffee
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command.coffee
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grammar.coffee
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helpers.coffee
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index.coffee
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lexer.coffee
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nodes.coffee
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optparse.coffee
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register.coffee
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repl.coffee
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rewriter.coffee
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</a>
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scope.litcoffee
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</a>
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sourcemap.litcoffee
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</ul>
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<ul class="sections">
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<li id="title">
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<div class="annotation">
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<h1>coffee-script.coffee</h1>
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</div>
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</li>
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<li id="section-1">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-1">¶</a>
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</div>
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<p>CoffeeScript can be used both on the server, as a command-line compiler based
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on Node.js/V8, or to run CoffeeScript directly in the browser. This module
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contains the main entry functions for tokenizing, parsing, and compiling
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source CoffeeScript into JavaScript.</p>
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</div>
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<div class="content"><div class='highlight'><pre>
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fs = <span class="hljs-built_in">require</span> <span class="hljs-string">'fs'</span>
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vm = <span class="hljs-built_in">require</span> <span class="hljs-string">'vm'</span>
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path = <span class="hljs-built_in">require</span> <span class="hljs-string">'path'</span>
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{Lexer} = <span class="hljs-built_in">require</span> <span class="hljs-string">'./lexer'</span>
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{parser} = <span class="hljs-built_in">require</span> <span class="hljs-string">'./parser'</span>
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helpers = <span class="hljs-built_in">require</span> <span class="hljs-string">'./helpers'</span>
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SourceMap = <span class="hljs-built_in">require</span> <span class="hljs-string">'./sourcemap'</span></pre></div></div>
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</li>
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<li id="section-2">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-2">¶</a>
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</div>
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<p>The current CoffeeScript version number.</p>
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-built_in">exports</span>.VERSION = <span class="hljs-string">'1.8.0'</span>
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<span class="hljs-built_in">exports</span>.FILE_EXTENSIONS = [<span class="hljs-string">'.coffee'</span>, <span class="hljs-string">'.litcoffee'</span>, <span class="hljs-string">'.coffee.md'</span>]</pre></div></div>
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</li>
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<li id="section-3">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-3">¶</a>
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</div>
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<p>Expose helpers for testing.</p>
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-built_in">exports</span>.helpers = helpers</pre></div></div>
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</li>
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<li id="section-4">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-4">¶</a>
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</div>
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<p>Function wrapper to add source file information to SyntaxErrors thrown by the
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lexer/parser/compiler.</p>
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-function"><span class="hljs-title">withPrettyErrors</span> = <span class="hljs-params">(fn)</span> -></span>
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<span class="hljs-function"><span class="hljs-params">(code, options = {})</span> -></span>
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<span class="hljs-keyword">try</span>
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fn.call @, code, options
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<span class="hljs-keyword">catch</span> err
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<span class="hljs-keyword">throw</span> helpers.updateSyntaxError err, code, options.filename</pre></div></div>
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</li>
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<li id="section-5">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-5">¶</a>
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</div>
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<p>Compile CoffeeScript code to JavaScript, using the Coffee/Jison compiler.</p>
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<p>If <code>options.sourceMap</code> is specified, then <code>options.filename</code> must also be specified. All
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options that can be passed to <code>SourceMap#generate</code> may also be passed here.</p>
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<p>This returns a javascript string, unless <code>options.sourceMap</code> is passed,
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in which case this returns a <code>{js, v3SourceMap, sourceMap}</code>
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object, where sourceMap is a sourcemap.coffee#SourceMap object, handy for doing programatic
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lookups.</p>
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-built_in">exports</span>.compile = compile = withPrettyErrors <span class="hljs-function"><span class="hljs-params">(code, options)</span> -></span>
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{merge, extend} = helpers
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options = extend {}, options
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<span class="hljs-keyword">if</span> options.sourceMap
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map = <span class="hljs-keyword">new</span> SourceMap
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fragments = parser.parse(lexer.tokenize code, options).compileToFragments options
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currentLine = <span class="hljs-number">0</span>
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currentLine += <span class="hljs-number">1</span> <span class="hljs-keyword">if</span> options.header
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currentLine += <span class="hljs-number">1</span> <span class="hljs-keyword">if</span> options.shiftLine
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currentColumn = <span class="hljs-number">0</span>
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js = <span class="hljs-string">""</span>
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<span class="hljs-keyword">for</span> fragment <span class="hljs-keyword">in</span> fragments</pre></div></div>
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</li>
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<li id="section-6">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-6">¶</a>
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</div>
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<p>Update the sourcemap with data from each fragment</p>
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</div>
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<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">if</span> options.sourceMap
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<span class="hljs-keyword">if</span> fragment.locationData
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map.add(
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[fragment.locationData.first_line, fragment.locationData.first_column]
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[currentLine, currentColumn]
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{<span class="hljs-attribute">noReplace</span>: <span class="hljs-literal">true</span>})
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newLines = helpers.count fragment.code, <span class="hljs-string">"\n"</span>
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currentLine += newLines
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<span class="hljs-keyword">if</span> newLines
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currentColumn = fragment.code.length - (fragment.code.lastIndexOf(<span class="hljs-string">"\n"</span>) + <span class="hljs-number">1</span>)
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<span class="hljs-keyword">else</span>
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currentColumn += fragment.code.length</pre></div></div>
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</li>
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<li id="section-7">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-7">¶</a>
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</div>
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<p>Copy the code from each fragment into the final JavaScript.</p>
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</div>
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<div class="content"><div class='highlight'><pre> js += fragment.code
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<span class="hljs-keyword">if</span> options.header
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header = <span class="hljs-string">"Generated by CoffeeScript <span class="hljs-subst">#{<span class="hljs-property">@VERSION</span>}</span>"</span>
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js = <span class="hljs-string">"// <span class="hljs-subst">#{header}</span>\n<span class="hljs-subst">#{js}</span>"</span>
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<span class="hljs-keyword">if</span> options.sourceMap
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answer = {js}
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answer.sourceMap = map
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answer.v3SourceMap = map.generate(options, code)
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answer
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<span class="hljs-keyword">else</span>
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js</pre></div></div>
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</li>
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<li id="section-8">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-8">¶</a>
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</div>
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<p>Tokenize a string of CoffeeScript code, and return the array of tokens.</p>
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-built_in">exports</span>.tokens = withPrettyErrors <span class="hljs-function"><span class="hljs-params">(code, options)</span> -></span>
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lexer.tokenize code, options</pre></div></div>
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</li>
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<li id="section-9">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-9">¶</a>
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</div>
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<p>Parse a string of CoffeeScript code or an array of lexed tokens, and
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return the AST. You can then compile it by calling <code>.compile()</code> on the root,
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or traverse it by using <code>.traverseChildren()</code> with a callback.</p>
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-built_in">exports</span>.nodes = withPrettyErrors <span class="hljs-function"><span class="hljs-params">(source, options)</span> -></span>
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<span class="hljs-keyword">if</span> <span class="hljs-keyword">typeof</span> source <span class="hljs-keyword">is</span> <span class="hljs-string">'string'</span>
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parser.parse lexer.tokenize source, options
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<span class="hljs-keyword">else</span>
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parser.parse source</pre></div></div>
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</li>
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<li id="section-10">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-10">¶</a>
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</div>
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<p>Compile and execute a string of CoffeeScript (on the server), correctly
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setting <code>__filename</code>, <code>__dirname</code>, and relative <code>require()</code>.</p>
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-built_in">exports</span>.<span class="hljs-function"><span class="hljs-title">run</span> = <span class="hljs-params">(code, options = {})</span> -></span>
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mainModule = <span class="hljs-built_in">require</span>.main</pre></div></div>
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</li>
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<li id="section-11">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-11">¶</a>
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</div>
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<p>Set the filename.</p>
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</div>
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<div class="content"><div class='highlight'><pre> mainModule.filename = process.argv[<span class="hljs-number">1</span>] =
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<span class="hljs-keyword">if</span> options.filename <span class="hljs-keyword">then</span> fs.realpathSync(options.filename) <span class="hljs-keyword">else</span> <span class="hljs-string">'.'</span></pre></div></div>
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</li>
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<li id="section-12">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-12">¶</a>
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</div>
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<p>Clear the module cache.</p>
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</div>
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<div class="content"><div class='highlight'><pre> mainModule.moduleCache <span class="hljs-keyword">and</span>= {}</pre></div></div>
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</li>
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<li id="section-13">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-13">¶</a>
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</div>
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<p>Assign paths for node_modules loading</p>
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</div>
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<div class="content"><div class='highlight'><pre> dir = <span class="hljs-keyword">if</span> options.filename
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path.dirname fs.realpathSync options.filename
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<span class="hljs-keyword">else</span>
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fs.realpathSync <span class="hljs-string">'.'</span>
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mainModule.paths = <span class="hljs-built_in">require</span>(<span class="hljs-string">'module'</span>)._nodeModulePaths dir</pre></div></div>
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</li>
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<li id="section-14">
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<div class="annotation">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-14">¶</a>
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</div>
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<p>Compile.</p>
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</div>
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<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">if</span> <span class="hljs-keyword">not</span> helpers.isCoffee(mainModule.filename) <span class="hljs-keyword">or</span> <span class="hljs-built_in">require</span>.extensions
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answer = compile code, options
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code = answer.js ? answer
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mainModule._compile code, mainModule.filename</pre></div></div>
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</li>
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<li id="section-15">
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<div class="annotation">
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||
<div class="pilwrap ">
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||
<a class="pilcrow" href="#section-15">¶</a>
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</div>
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<p>Compile and evaluate a string of CoffeeScript (in a Node.js-like environment).
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The CoffeeScript REPL uses this to run the input.</p>
|
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|
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</div>
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<div class="content"><div class='highlight'><pre><span class="hljs-built_in">exports</span>.<span class="hljs-function"><span class="hljs-title">eval</span> = <span class="hljs-params">(code, options = {})</span> -></span>
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<span class="hljs-keyword">return</span> <span class="hljs-keyword">unless</span> code = code.trim()
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Script = vm.Script
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<span class="hljs-keyword">if</span> Script
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<span class="hljs-keyword">if</span> options.sandbox?
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<span class="hljs-keyword">if</span> options.sandbox <span class="hljs-keyword">instanceof</span> Script.createContext().constructor
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sandbox = options.sandbox
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||
<span class="hljs-keyword">else</span>
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sandbox = Script.createContext()
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sandbox[k] = v <span class="hljs-keyword">for</span> own k, v <span class="hljs-keyword">of</span> options.sandbox
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||
sandbox.<span class="hljs-built_in">global</span> = sandbox.root = sandbox.GLOBAL = sandbox
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||
<span class="hljs-keyword">else</span>
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||
sandbox = <span class="hljs-built_in">global</span>
|
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sandbox.__filename = options.filename || <span class="hljs-string">'eval'</span>
|
||
sandbox.__dirname = path.dirname sandbox.__filename</pre></div></div>
|
||
|
||
</li>
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|
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<li id="section-16">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-16">¶</a>
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||
</div>
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||
<p>define module/require only if they chose not to specify their own</p>
|
||
|
||
</div>
|
||
|
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<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">unless</span> sandbox <span class="hljs-keyword">isnt</span> <span class="hljs-built_in">global</span> <span class="hljs-keyword">or</span> sandbox.<span class="hljs-built_in">module</span> <span class="hljs-keyword">or</span> sandbox.<span class="hljs-built_in">require</span>
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||
Module = <span class="hljs-built_in">require</span> <span class="hljs-string">'module'</span>
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sandbox.<span class="hljs-built_in">module</span> = _module = <span class="hljs-keyword">new</span> Module(options.modulename || <span class="hljs-string">'eval'</span>)
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sandbox.<span class="hljs-built_in">require</span> = <span class="hljs-function"><span class="hljs-title">_require</span> = <span class="hljs-params">(path)</span> -></span> Module._load path, _module, <span class="hljs-literal">true</span>
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_module.filename = sandbox.__filename
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_require[r] = <span class="hljs-built_in">require</span>[r] <span class="hljs-keyword">for</span> r <span class="hljs-keyword">in</span> Object.getOwnPropertyNames <span class="hljs-built_in">require</span> <span class="hljs-keyword">when</span> r <span class="hljs-keyword">isnt</span> <span class="hljs-string">'paths'</span></pre></div></div>
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||
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||
</li>
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<li id="section-17">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-17">¶</a>
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</div>
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<p>use the same hack node currently uses for their own REPL</p>
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</div>
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<div class="content"><div class='highlight'><pre> _require.paths = _module.paths = Module._nodeModulePaths process.cwd()
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_require.<span class="hljs-function"><span class="hljs-title">resolve</span> = <span class="hljs-params">(request)</span> -></span> Module._resolveFilename request, _module
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o = {}
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o[k] = v <span class="hljs-keyword">for</span> own k, v <span class="hljs-keyword">of</span> options
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o.bare = <span class="hljs-literal">on</span> <span class="hljs-comment"># ensure return value</span>
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js = compile code, o
|
||
<span class="hljs-keyword">if</span> sandbox <span class="hljs-keyword">is</span> <span class="hljs-built_in">global</span>
|
||
vm.runInThisContext js
|
||
<span class="hljs-keyword">else</span>
|
||
vm.runInContext js, sandbox
|
||
|
||
<span class="hljs-built_in">exports</span>.<span class="hljs-function"><span class="hljs-title">register</span> = -></span> <span class="hljs-built_in">require</span> <span class="hljs-string">'./register'</span></pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-18">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-18">¶</a>
|
||
</div>
|
||
<p>Throw error with deprecation warning when depending upon implicit <code>require.extensions</code> registration</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">if</span> <span class="hljs-built_in">require</span>.extensions
|
||
<span class="hljs-keyword">for</span> ext <span class="hljs-keyword">in</span> <span class="hljs-property">@FILE_EXTENSIONS</span>
|
||
<span class="hljs-built_in">require</span>.extensions[ext] ?=<span class="hljs-function"> -></span>
|
||
<span class="hljs-keyword">throw</span> <span class="hljs-keyword">new</span> Error <span class="hljs-string">"""
|
||
Use CoffeeScript.register() or require the coffee-script/register module to require <span class="hljs-subst">#{ext}</span> files.
|
||
"""</span>
|
||
|
||
<span class="hljs-built_in">exports</span>.<span class="hljs-function"><span class="hljs-title">_compileFile</span> = <span class="hljs-params">(filename, sourceMap = <span class="hljs-literal">no</span>)</span> -></span>
|
||
raw = fs.readFileSync filename, <span class="hljs-string">'utf8'</span>
|
||
stripped = <span class="hljs-keyword">if</span> raw.charCodeAt(<span class="hljs-number">0</span>) <span class="hljs-keyword">is</span> <span class="hljs-number">0xFEFF</span> <span class="hljs-keyword">then</span> raw.substring <span class="hljs-number">1</span> <span class="hljs-keyword">else</span> raw
|
||
|
||
<span class="hljs-keyword">try</span>
|
||
answer = compile(stripped, {filename, sourceMap, <span class="hljs-attribute">literate</span>: helpers.isLiterate filename})
|
||
<span class="hljs-keyword">catch</span> err</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-19">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-19">¶</a>
|
||
</div>
|
||
<p>As the filename and code of a dynamically loaded file will be different
|
||
from the original file compiled with CoffeeScript.run, add that
|
||
information to error so it can be pretty-printed later.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">throw</span> helpers.updateSyntaxError err, stripped, filename
|
||
|
||
answer</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-20">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-20">¶</a>
|
||
</div>
|
||
<p>Instantiate a Lexer for our use here.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre>lexer = <span class="hljs-keyword">new</span> Lexer</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-21">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-21">¶</a>
|
||
</div>
|
||
<p>The real Lexer produces a generic stream of tokens. This object provides a
|
||
thin wrapper around it, compatible with the Jison API. We can then pass it
|
||
directly as a “Jison lexer”.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre>parser.lexer =
|
||
<span class="hljs-attribute">lex</span>:<span class="hljs-function"> -></span>
|
||
token = <span class="hljs-property">@tokens</span>[<span class="hljs-property">@pos</span>++]
|
||
<span class="hljs-keyword">if</span> token
|
||
[tag, <span class="hljs-property">@yytext</span>, <span class="hljs-property">@yylloc</span>] = token
|
||
<span class="hljs-property">@errorToken</span> = token.origin <span class="hljs-keyword">or</span> token
|
||
<span class="hljs-property">@yylineno</span> = <span class="hljs-property">@yylloc</span>.first_line
|
||
<span class="hljs-keyword">else</span>
|
||
tag = <span class="hljs-string">''</span>
|
||
|
||
tag
|
||
<span class="hljs-attribute">setInput</span>: <span class="hljs-function"><span class="hljs-params">(<span class="hljs-property">@tokens</span>)</span> -></span>
|
||
<span class="hljs-property">@pos</span> = <span class="hljs-number">0</span>
|
||
<span class="hljs-attribute">upcomingInput</span>:<span class="hljs-function"> -></span>
|
||
<span class="hljs-string">""</span></pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-22">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-22">¶</a>
|
||
</div>
|
||
<p>Make all the AST nodes visible to the parser.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre>parser.yy = <span class="hljs-built_in">require</span> <span class="hljs-string">'./nodes'</span></pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-23">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-23">¶</a>
|
||
</div>
|
||
<p>Override Jison’s default error handling function.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre>parser.yy.<span class="hljs-function"><span class="hljs-title">parseError</span> = <span class="hljs-params">(message, {token})</span> -></span></pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-24">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-24">¶</a>
|
||
</div>
|
||
<p>Disregard Jison’s message, it contains redundant line numer information.
|
||
Disregard the token, we take its value directly from the lexer in case
|
||
the error is caused by a generated token which might refer to its origin.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre> {errorToken, tokens} = parser.lexer
|
||
[errorTag, errorText, errorLoc] = errorToken
|
||
|
||
errorText = <span class="hljs-keyword">if</span> errorToken <span class="hljs-keyword">is</span> tokens[tokens.length - <span class="hljs-number">1</span>]
|
||
<span class="hljs-string">'end of input'</span>
|
||
<span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> errorTag <span class="hljs-keyword">in</span> [<span class="hljs-string">'INDENT'</span>, <span class="hljs-string">'OUTDENT'</span>]
|
||
<span class="hljs-string">'indentation'</span>
|
||
<span class="hljs-keyword">else</span>
|
||
helpers.nameWhitespaceCharacter errorText</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-25">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-25">¶</a>
|
||
</div>
|
||
<p>The second argument has a <code>loc</code> property, which should have the location
|
||
data for this token. Unfortunately, Jison seems to send an outdated <code>loc</code>
|
||
(from the previous token), so we take the location information directly
|
||
from the lexer.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre> helpers.throwSyntaxError <span class="hljs-string">"unexpected <span class="hljs-subst">#{errorText}</span>"</span>, errorLoc</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-26">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-26">¶</a>
|
||
</div>
|
||
<p>Based on <a href="http://v8.googlecode.com/svn/branches/bleeding_edge/src/messages.js">http://v8.googlecode.com/svn/branches/bleeding_edge/src/messages.js</a>
|
||
Modified to handle sourceMap</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre><span class="hljs-function"><span class="hljs-title">formatSourcePosition</span> = <span class="hljs-params">(frame, getSourceMapping)</span> -></span>
|
||
fileName = <span class="hljs-literal">undefined</span>
|
||
fileLocation = <span class="hljs-string">''</span>
|
||
|
||
<span class="hljs-keyword">if</span> frame.isNative()
|
||
fileLocation = <span class="hljs-string">"native"</span>
|
||
<span class="hljs-keyword">else</span>
|
||
<span class="hljs-keyword">if</span> frame.isEval()
|
||
fileName = frame.getScriptNameOrSourceURL()
|
||
fileLocation = <span class="hljs-string">"<span class="hljs-subst">#{frame.getEvalOrigin()}</span>, "</span> <span class="hljs-keyword">unless</span> fileName
|
||
<span class="hljs-keyword">else</span>
|
||
fileName = frame.getFileName()
|
||
|
||
fileName <span class="hljs-keyword">or</span>= <span class="hljs-string">"<anonymous>"</span>
|
||
|
||
line = frame.getLineNumber()
|
||
column = frame.getColumnNumber()</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-27">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-27">¶</a>
|
||
</div>
|
||
<p>Check for a sourceMap position</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre> source = getSourceMapping fileName, line, column
|
||
fileLocation =
|
||
<span class="hljs-keyword">if</span> source
|
||
<span class="hljs-string">"<span class="hljs-subst">#{fileName}</span>:<span class="hljs-subst">#{source[<span class="hljs-number">0</span>]}</span>:<span class="hljs-subst">#{source[<span class="hljs-number">1</span>]}</span>"</span>
|
||
<span class="hljs-keyword">else</span>
|
||
<span class="hljs-string">"<span class="hljs-subst">#{fileName}</span>:<span class="hljs-subst">#{line}</span>:<span class="hljs-subst">#{column}</span>"</span>
|
||
|
||
functionName = frame.getFunctionName()
|
||
isConstructor = frame.isConstructor()
|
||
isMethodCall = <span class="hljs-keyword">not</span> (frame.isToplevel() <span class="hljs-keyword">or</span> isConstructor)
|
||
|
||
<span class="hljs-keyword">if</span> isMethodCall
|
||
methodName = frame.getMethodName()
|
||
typeName = frame.getTypeName()
|
||
|
||
<span class="hljs-keyword">if</span> functionName
|
||
tp = as = <span class="hljs-string">''</span>
|
||
<span class="hljs-keyword">if</span> typeName <span class="hljs-keyword">and</span> functionName.indexOf typeName
|
||
tp = <span class="hljs-string">"<span class="hljs-subst">#{typeName}</span>."</span>
|
||
<span class="hljs-keyword">if</span> methodName <span class="hljs-keyword">and</span> functionName.indexOf(<span class="hljs-string">".<span class="hljs-subst">#{methodName}</span>"</span>) <span class="hljs-keyword">isnt</span> functionName.length - methodName.length - <span class="hljs-number">1</span>
|
||
as = <span class="hljs-string">" [as <span class="hljs-subst">#{methodName}</span>]"</span>
|
||
|
||
<span class="hljs-string">"<span class="hljs-subst">#{tp}</span><span class="hljs-subst">#{functionName}</span><span class="hljs-subst">#{as}</span> (<span class="hljs-subst">#{fileLocation}</span>)"</span>
|
||
<span class="hljs-keyword">else</span>
|
||
<span class="hljs-string">"<span class="hljs-subst">#{typeName}</span>.<span class="hljs-subst">#{methodName <span class="hljs-keyword">or</span> <span class="hljs-string">'<anonymous>'</span>}</span> (<span class="hljs-subst">#{fileLocation}</span>)"</span>
|
||
<span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> isConstructor
|
||
<span class="hljs-string">"new <span class="hljs-subst">#{functionName <span class="hljs-keyword">or</span> <span class="hljs-string">'<anonymous>'</span>}</span> (<span class="hljs-subst">#{fileLocation}</span>)"</span>
|
||
<span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> functionName
|
||
<span class="hljs-string">"<span class="hljs-subst">#{functionName}</span> (<span class="hljs-subst">#{fileLocation}</span>)"</span>
|
||
<span class="hljs-keyword">else</span>
|
||
fileLocation</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-28">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-28">¶</a>
|
||
</div>
|
||
<p>Map of filenames -> sourceMap object.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre>sourceMaps = {}</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-29">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-29">¶</a>
|
||
</div>
|
||
<p>Generates the source map for a coffee file and stores it in the local cache variable.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre><span class="hljs-function"><span class="hljs-title">getSourceMap</span> = <span class="hljs-params">(filename)</span> -></span>
|
||
<span class="hljs-keyword">return</span> sourceMaps[filename] <span class="hljs-keyword">if</span> sourceMaps[filename]
|
||
<span class="hljs-keyword">return</span> <span class="hljs-keyword">unless</span> path?.extname(filename) <span class="hljs-keyword">in</span> <span class="hljs-built_in">exports</span>.FILE_EXTENSIONS
|
||
answer = <span class="hljs-built_in">exports</span>._compileFile filename, <span class="hljs-literal">true</span>
|
||
sourceMaps[filename] = answer.sourceMap</pre></div></div>
|
||
|
||
</li>
|
||
|
||
|
||
<li id="section-30">
|
||
<div class="annotation">
|
||
|
||
<div class="pilwrap ">
|
||
<a class="pilcrow" href="#section-30">¶</a>
|
||
</div>
|
||
<p>Based on <a href="http://goo.gl/ZTx1p">michaelficarra/CoffeeScriptRedux</a>
|
||
NodeJS / V8 have no support for transforming positions in stack traces using
|
||
sourceMap, so we must monkey-patch Error to display CoffeeScript source
|
||
positions.</p>
|
||
|
||
</div>
|
||
|
||
<div class="content"><div class='highlight'><pre>Error.<span class="hljs-function"><span class="hljs-title">prepareStackTrace</span> = <span class="hljs-params">(err, stack)</span> -></span>
|
||
<span class="hljs-function"><span class="hljs-title">getSourceMapping</span> = <span class="hljs-params">(filename, line, column)</span> -></span>
|
||
sourceMap = getSourceMap filename
|
||
answer = sourceMap.sourceLocation [line - <span class="hljs-number">1</span>, column - <span class="hljs-number">1</span>] <span class="hljs-keyword">if</span> sourceMap
|
||
<span class="hljs-keyword">if</span> answer <span class="hljs-keyword">then</span> [answer[<span class="hljs-number">0</span>] + <span class="hljs-number">1</span>, answer[<span class="hljs-number">1</span>] + <span class="hljs-number">1</span>] <span class="hljs-keyword">else</span> <span class="hljs-literal">null</span>
|
||
|
||
frames = <span class="hljs-keyword">for</span> frame <span class="hljs-keyword">in</span> stack
|
||
<span class="hljs-keyword">break</span> <span class="hljs-keyword">if</span> frame.getFunction() <span class="hljs-keyword">is</span> <span class="hljs-built_in">exports</span>.run
|
||
<span class="hljs-string">" at <span class="hljs-subst">#{formatSourcePosition frame, getSourceMapping}</span>"</span>
|
||
|
||
<span class="hljs-string">"<span class="hljs-subst">#{err.toString()}</span>\n<span class="hljs-subst">#{frames.join <span class="hljs-string">'\n'</span>}</span>\n"</span></pre></div></div>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</div>
|
||
</body>
|
||
</html>
|