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<!DOCTYPE html> <html> <head> <title>grammar.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="browser.html"> browser.coffee </a> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="index.html"> index.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> grammar.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>The CoffeeScript parser is generated by <a href="http://github.com/zaach/jison">Jison</a>
|
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<!DOCTYPE html> <html> <head> <title>grammar.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="browser.html"> browser.coffee </a> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="index.html"> index.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> grammar.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> <p>The CoffeeScript parser is generated by <a href="http://github.com/zaach/jison">Jison</a>
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from this grammar file. Jison is a bottom-up parser generator, similar in
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style to <a href="http://www.gnu.org/software/bison">Bison</a>, implemented in JavaScript.
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It can recognize <a href="http://en.wikipedia.org/wiki/LR_grammar">LALR(1), LR(0), SLR(1), and LR(1)</a>
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@ -12,17 +12,19 @@ reduces into the <a href="http://en.wikipedia.org/wiki/Terminal_and_nonterminal_
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(the enclosing name at the top), and we proceed from there.</p>
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<p>If you run the <code>cake build:parser</code> command, Jison constructs a parse table
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from our rules and saves it into <code>lib/parser.js</code>.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>The only dependency is on the <strong>Jison.Parser</strong>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">Parser = </span><span class="nx">require</span><span class="p">(</span><span class="s1">'jison'</span><span class="p">).</span><span class="nx">Parser</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <h2>Jison DSL</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Since we're going to be wrapped in a function by Jison in any case, if our
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from our rules and saves it into <code>lib/parser.js</code>.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <p>The only dependency is on the <strong>Jison.Parser</strong>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="p">{</span><span class="nx">Parser</span><span class="p">}</span> <span class="o">=</span> <span class="nx">require</span> <span class="s1">'jison'</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <h2>Jison DSL</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>Since we're going to be wrapped in a function by Jison in any case, if our
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action immediately returns a value, we can optimize by removing the function
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wrapper and just returning the value directly.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">unwrap = </span><span class="sr">/function\s*\(\)\s*\{\s*return\s*([\s\S]*);\s*\}/</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Our handy DSL for Jison grammar generation, thanks to
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wrapper and just returning the value directly.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">unwrap = </span><span class="sr">/^function\s*\(\)\s*\{\s*return\s*([\s\S]*);\s*\}/</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>Our handy DSL for Jison grammar generation, thanks to
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<a href="http://github.com/creationix">Tim Caswell</a>. For every rule in the grammar,
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we pass the pattern-defining string, the action to run, and extra options,
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optionally. If no action is specified, we simply pass the value of the
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previous nonterminal.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">o = </span><span class="p">(</span><span class="nx">patternString</span><span class="p">,</span> <span class="nx">action</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-></span>
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<span class="nv">patternString = </span><span class="nx">patternString</span><span class="p">.</span><span class="nx">replace</span> <span class="sr">/\s{2,}/g</span><span class="p">,</span> <span class="s1">' '</span>
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<span class="k">return</span> <span class="p">[</span><span class="nx">patternString</span><span class="p">,</span> <span class="s1">'$$ = $1;'</span><span class="p">,</span> <span class="nx">options</span><span class="p">]</span> <span class="nx">unless</span> <span class="nx">action</span>
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<span class="nv">action = </span><span class="k">if</span> <span class="nv">match = </span><span class="p">(</span><span class="nx">action</span> <span class="o">+</span> <span class="s1">''</span><span class="p">).</span><span class="nx">match</span><span class="p">(</span><span class="nx">unwrap</span><span class="p">)</span> <span class="k">then</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="s2">"(#{action}())"</span>
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<span class="nv">action = </span><span class="nx">action</span><span class="p">.</span><span class="nx">replace</span> <span class="sr">/\b(?:[A-Z][a-z]+Node|Expressions)\b/g</span><span class="p">,</span> <span class="s1">'yy.$&'</span>
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<span class="p">[</span><span class="nx">patternString</span><span class="p">,</span> <span class="s2">"$$ = #{action};"</span><span class="p">,</span> <span class="nx">options</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <h2>Grammatical Rules</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>In all of the rules that follow, you'll see the name of the nonterminal as
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<span class="nv">action = </span><span class="k">if</span> <span class="nv">match = </span><span class="nx">unwrap</span><span class="p">.</span><span class="nx">exec</span> <span class="nx">action</span> <span class="k">then</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="s2">"(#{action}())"</span>
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<span class="nv">action = </span><span class="nx">action</span><span class="p">.</span><span class="nx">replace</span> <span class="sr">/\bnew /g</span><span class="p">,</span> <span class="s1">'$&yy.'</span>
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||||
<span class="nv">action = </span><span class="nx">action</span><span class="p">.</span><span class="nx">replace</span> <span class="sr">/\b(?:Expressions\.wrap|extend)\b/g</span><span class="p">,</span> <span class="s1">'yy.$&'</span>
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||||
<span class="p">[</span><span class="nx">patternString</span><span class="p">,</span> <span class="s2">"$$ = #{action};"</span><span class="p">,</span> <span class="nx">options</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">¶</a> </div> <h2>Grammatical Rules</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">¶</a> </div> <p>In all of the rules that follow, you'll see the name of the nonterminal as
|
||||
the key to a list of alternative matches. With each match's action, the
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dollar-sign variables are provided by Jison as references to the value of
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their numeric position, so in this rule:</p>
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@ -32,347 +34,323 @@ their numeric position, so in this rule:</p>
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<p><code>$1</code> would be the value of the first <code>Expression</code>, <code>$2</code> would be the token
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for the <code>UNLESS</code> terminal, and <code>$3</code> would be the value of the second
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||||
<code>Expression</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">grammar =</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>The <strong>Root</strong> is the top-level node in the syntax tree. Since we parse bottom-up,
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||||
<code>Expression</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">grammar =</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">¶</a> </div> <p>The <strong>Root</strong> is the top-level node in the syntax tree. Since we parse bottom-up,
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||||
all parsing must end here.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Root</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">""</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Expressions</span>
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||||
<span class="nx">o</span> <span class="s2">"TERMINATOR"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Expressions</span>
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||||
<span class="nx">o</span> <span class="s2">"Body"</span>
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||||
<span class="nx">o</span> <span class="s2">"Block TERMINATOR"</span>
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||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Any list of statements and expressions, seperated by line breaks or semicolons.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Body</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Line"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"Body TERMINATOR Line"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Body TERMINATOR"</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>Expressions and statements, which make up a line in a body.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Line</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression"</span>
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||||
<span class="nx">o</span> <span class="s2">"Statement"</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Pure statements which cannot be expressions.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Statement</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Return"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Throw"</span>
|
||||
<span class="nx">o</span> <span class="s2">"BREAK"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"CONTINUE"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"DEBUGGER"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-12">#</a> </div> <p>All the different types of expressions in our language. The basic unit of
|
||||
<span class="nx">o</span> <span class="s1">''</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Expressions</span>
|
||||
<span class="nx">o</span> <span class="s1">'Body'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Block TERMINATOR'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-9">¶</a> </div> <p>Any list of statements and expressions, separated by line breaks or semicolons.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Body</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Line'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'Body TERMINATOR Line'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Body TERMINATOR'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-10">¶</a> </div> <p>Expressions and statements, which make up a line in a body.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Line</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Statement'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-11">¶</a> </div> <p>Pure statements which cannot be expressions.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Statement</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Return'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Throw'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Comment'</span>
|
||||
<span class="nx">o</span> <span class="s1">'STATEMENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Literal</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-12">¶</a> </div> <p>All the different types of expressions in our language. The basic unit of
|
||||
CoffeeScript is the <strong>Expression</strong> -- everything that can be an expression
|
||||
is one. Expressions serve as the building blocks of many other rules, making
|
||||
them somewhat circular.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Expression</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Value"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Call"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Code"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Operation"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Assign"</span>
|
||||
<span class="nx">o</span> <span class="s2">"If"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Try"</span>
|
||||
<span class="nx">o</span> <span class="s2">"While"</span>
|
||||
<span class="nx">o</span> <span class="s2">"For"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Switch"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Extends"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Class"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Existence"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Comment"</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-13">#</a> </div> <p>An indented block of expressions. Note that the <a href="rewriter.html">Rewriter</a>
|
||||
<span class="nx">o</span> <span class="s1">'Value'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Invocation'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Code'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Operation'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Assign'</span>
|
||||
<span class="nx">o</span> <span class="s1">'If'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Try'</span>
|
||||
<span class="nx">o</span> <span class="s1">'While'</span>
|
||||
<span class="nx">o</span> <span class="s1">'For'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Switch'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Class'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-13">¶</a> </div> <p>An indented block of expressions. Note that the <a href="rewriter.html">Rewriter</a>
|
||||
will convert some postfix forms into blocks for us, by adjusting the
|
||||
token stream.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Block</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDENT Body OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDENT OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Expressions</span>
|
||||
<span class="nx">o</span> <span class="s2">"TERMINATOR Comment"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-14">#</a> </div> <p>A literal identifier, a variable name or property.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Identifier</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"IDENTIFIER"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-15">#</a> </div> <p>Alphanumerics are separated from the other <strong>Literal</strong> matchers because
|
||||
<span class="nx">o</span> <span class="s1">'INDENT Body OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'INDENT OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Expressions</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-14">¶</a> </div> <p>A literal identifier, a variable name or property.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Identifier</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'IDENTIFIER'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Literal</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-15">¶</a> </div> <p>Alphanumerics are separated from the other <strong>Literal</strong> matchers because
|
||||
they can also serve as keys in object literals.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">AlphaNumeric</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"NUMBER"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"STRING"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-16">#</a> </div> <p>All of our immediate values. These can (in general), be passed straight
|
||||
<span class="nx">o</span> <span class="s1">'NUMBER'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Literal</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'STRING'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Literal</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-16">¶</a> </div> <p>All of our immediate values. These can (in general), be passed straight
|
||||
through and printed to JavaScript.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Literal</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"AlphaNumeric"</span>
|
||||
<span class="nx">o</span> <span class="s2">"JS"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"REGEX"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"TRUE"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"FALSE"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
|
||||
<span class="nx">o</span> <span class="s2">"YES"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"NO"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
|
||||
<span class="nx">o</span> <span class="s2">"ON"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"OFF"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-17">#</a> </div> <p>Assignment of a variable, property, or index to a value.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Assign</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Assignable = Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Assignable = INDENT Expression OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-18">#</a> </div> <p>Assignment when it happens within an object literal. The difference from
|
||||
<span class="nx">o</span> <span class="s1">'AlphaNumeric'</span>
|
||||
<span class="nx">o</span> <span class="s1">'JS'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Literal</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'REGEX'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Literal</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'BOOL'</span><span class="p">,</span> <span class="o">-></span>
|
||||
<span class="k">new</span> <span class="nx">Literal</span> <span class="k">if</span> <span class="nx">$1</span> <span class="o">is</span> <span class="s1">'undefined'</span> <span class="k">then</span> <span class="s1">'void 0'</span> <span class="k">else</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-17">¶</a> </div> <p>Assignment of a variable, property, or index to a value.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Assign</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Assignable = Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Assign</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Assignable = INDENT Expression OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Assign</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-18">¶</a> </div> <p>Assignment when it happens within an object literal. The difference from
|
||||
the ordinary <strong>Assign</strong> is that these allow numbers and strings as keys.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">AssignObj</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Identifier"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"AlphaNumeric"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Identifier : Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">'object'</span>
|
||||
<span class="nx">o</span> <span class="s2">"AlphaNumeric : Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">'object'</span>
|
||||
<span class="nx">o</span> <span class="s2">"Identifier : INDENT Expression OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$4</span><span class="p">,</span> <span class="s1">'object'</span>
|
||||
<span class="nx">o</span> <span class="s2">"AlphaNumeric : INDENT Expression OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$4</span><span class="p">,</span> <span class="s1">'object'</span>
|
||||
<span class="nx">o</span> <span class="s2">"Comment"</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-19">#</a> </div> <p>A return statement from a function body.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Return</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"RETURN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ReturnNode</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"RETURN"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ReturnNode</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">'null'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-20">#</a> </div> <p>A block comment.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Comment</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"HERECOMMENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">CommentNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-21">#</a> </div> <p><a href="http://jashkenas.github.com/coffee-script/#existence">The existential operator</a>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Existence</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression ?"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ExistenceNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-22">#</a> </div> <p>The <strong>Code</strong> node is the function literal. It's defined by an indented block
|
||||
of <strong>Expressions</strong> preceded by a function arrow, with an optional parameter
|
||||
list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Code</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"PARAM_START ParamList PARAM_END FuncGlyph Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">CodeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"FuncGlyph Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">CodeNode</span> <span class="p">[],</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-23">#</a> </div> <p>CoffeeScript has two different symbols for functions. <code>-></code> is for ordinary
|
||||
functions, and <code>=></code> is for functions bound to the current value of <em>this</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">FuncGlyph</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"->"</span><span class="p">,</span> <span class="o">-></span> <span class="s1">'func'</span>
|
||||
<span class="nx">o</span> <span class="s2">"=>"</span><span class="p">,</span> <span class="o">-></span> <span class="s1">'boundfunc'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-24">#</a> </div> <p>An optional, trailing comma.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">OptComma</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">''</span>
|
||||
<span class="nx">o</span> <span class="s1">','</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-25">#</a> </div> <p>The list of parameters that a function accepts can be of any length.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ParamList</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">""</span><span class="p">,</span> <span class="o">-></span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s2">"Param"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ParamList , Param"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-26">#</a> </div> <p>A single parameter in a function definition can be ordinary, or a splat
|
||||
that hoovers up the remaining arguments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Param</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"PARAM"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"@ PARAM"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ParamNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"PARAM . . ."</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ParamNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">false</span><span class="p">,</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"@ PARAM . . ."</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ParamNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">true</span><span class="p">,</span> <span class="kc">true</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-27"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-27">#</a> </div> <p>A splat that occurs outside of a parameter list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Splat</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression . . ."</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">SplatNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-28"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-28">#</a> </div> <p>Variables and properties that can be assigned to.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">SimpleAssignable</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Identifier"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"Value Accessor"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"Invocation Accessor"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ThisProperty"</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-29"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-29">#</a> </div> <p>Everything that can be assigned to.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Assignable</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"SimpleAssignable"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Array"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"Object"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-30"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-30">#</a> </div> <p>The types of things that can be treated as values -- assigned to, invoked
|
||||
as functions, indexed into, named as a class, etc.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Value</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Assignable"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Literal"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"Parenthetical"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"Range"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"This"</span>
|
||||
<span class="nx">o</span> <span class="s2">"NULL"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">'null'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-31"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-31">#</a> </div> <p>The general group of accessors into an object, by property, by prototype
|
||||
or by array index or slice.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Accessor</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"PROPERTY_ACCESS Identifier"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"PROTOTYPE_ACCESS Identifier"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">'prototype'</span>
|
||||
<span class="nx">o</span> <span class="s2">"::"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="s1">'prototype'</span><span class="p">))</span>
|
||||
<span class="nx">o</span> <span class="s2">"SOAK_ACCESS Identifier"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">'soak'</span>
|
||||
<span class="nx">o</span> <span class="s2">"Index"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Slice"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">SliceNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-32"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-32">#</a> </div> <p>Indexing into an object or array using bracket notation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Index</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDEX_START Expression INDEX_END"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">IndexNode</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDEX_SOAK Index"</span><span class="p">,</span> <span class="o">-></span> <span class="nv">$2.soakNode = </span><span class="kc">yes</span><span class="p">;</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDEX_PROTO Index"</span><span class="p">,</span> <span class="o">-></span> <span class="nv">$2.proto = </span><span class="kc">yes</span><span class="p">;</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-33"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-33">#</a> </div> <p>In CoffeeScript, an object literal is simply a list of assignments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nb">Object</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"{ AssignList OptComma }"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ObjectNode</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-34"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-34">#</a> </div> <p>Assignment of properties within an object literal can be separated by
|
||||
comma, as in JavaScript, or simply by newline.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">AssignList</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">""</span><span class="p">,</span> <span class="o">-></span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s2">"AssignObj"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"AssignList , AssignObj"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"AssignList OptComma TERMINATOR AssignObj"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"AssignList OptComma INDENT AssignList OptComma OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-35"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-35">#</a> </div> <p>Class definitions have optional bodies of prototype property assignments,
|
||||
and optional references to the superclass.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Class</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"CLASS SimpleAssignable"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"CLASS SimpleAssignable EXTENDS Value"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"CLASS SimpleAssignable INDENT ClassBody OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"CLASS SimpleAssignable EXTENDS Value INDENT ClassBody OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$6</span>
|
||||
<span class="nx">o</span> <span class="s2">"CLASS INDENT ClassBody OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="s1">'__temp__'</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-36"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-36">#</a> </div> <p>Assignments that can happen directly inside a class declaration.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ClassAssign</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"AssignObj"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"ThisProperty : Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">'this'</span>
|
||||
<span class="nx">o</span> <span class="s2">"ThisProperty : INDENT Expression OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$4</span><span class="p">,</span> <span class="s1">'this'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-37"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-37">#</a> </div> <p>A list of assignments to a class.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ClassBody</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">""</span><span class="p">,</span> <span class="o">-></span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ClassAssign"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ClassBody TERMINATOR ClassAssign"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"{ ClassBody }"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-38"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-38">#</a> </div> <p>The two flavors of function call: normal, and object instantiation with <code>new</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Call</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Invocation"</span>
|
||||
<span class="nx">o</span> <span class="s2">"NEW Invocation"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span><span class="p">.</span><span class="nx">newInstance</span><span class="p">()</span>
|
||||
<span class="nx">o</span> <span class="s2">"NEW Value"</span><span class="p">,</span> <span class="o">-></span> <span class="p">(</span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="nx">$2</span><span class="p">,</span> <span class="p">[])).</span><span class="nx">newInstance</span><span class="p">()</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-39"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-39">#</a> </div> <p>Extending an object by setting its prototype chain to reference a parent
|
||||
object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Extends</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"SimpleAssignable EXTENDS Value"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ExtendsNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-40"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-40">#</a> </div> <p>Ordinary function invocation, or a chained series of calls.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Invocation</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Value OptFuncExist Arguments"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"Invocation OptFuncExist Arguments"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"SUPER"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="s1">'super'</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">SplatNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="s1">'arguments'</span><span class="p">))]</span>
|
||||
<span class="nx">o</span> <span class="s2">"SUPER Arguments"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="s1">'super'</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-41"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-41">#</a> </div> <p>An optional existence check on a function.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">OptFuncExist</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">""</span><span class="p">,</span> <span class="o">-></span> <span class="kc">no</span>
|
||||
<span class="nx">o</span> <span class="s2">"FUNC_EXIST"</span><span class="p">,</span> <span class="o">-></span> <span class="kc">yes</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-42"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-42">#</a> </div> <p>The list of arguments to a function call.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Arguments</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"CALL_START CALL_END"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s2">"CALL_START ArgList OptComma CALL_END"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-43"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-43">#</a> </div> <p>A reference to the <em>this</em> current object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">This</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"THIS"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">'this'</span>
|
||||
<span class="nx">o</span> <span class="s2">"@"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">'this'</span>
|
||||
<span class="nx">o</span> <span class="s1">'ObjAssignable'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'ObjAssignable : Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Assign</span> <span class="k">new</span> <span class="nx">Value</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">'object'</span>
|
||||
<span class="nx">o</span> <span class="s1">'ObjAssignable :</span>
|
||||
<span class="s1"> INDENT Expression OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Assign</span> <span class="k">new</span> <span class="nx">Value</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$4</span><span class="p">,</span> <span class="s1">'object'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Comment'</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">RangeDots</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">". ."</span><span class="p">,</span> <span class="o">-></span> <span class="s1">'inclusive'</span>
|
||||
<span class="nx">o</span> <span class="s2">". . ."</span><span class="p">,</span> <span class="o">-></span> <span class="s1">'exclusive'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-44"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-44">#</a> </div> <p>A reference to a property on <em>this</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ThisProperty</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"@ Identifier"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="s1">'this'</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">$2</span><span class="p">)]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-45"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-45">#</a> </div> <p>The CoffeeScript range literal.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Range</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"[ Expression RangeDots Expression ]"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-46"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-46">#</a> </div> <p>The slice literal.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Slice</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDEX_START Expression RangeDots Expression INDEX_END"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDEX_START Expression RangeDots INDEX_END"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDEX_START RangeDots Expression INDEX_END"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-47"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-47">#</a> </div> <p>The array literal.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nb">Array</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"[ ]"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ArrayNode</span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s2">"[ ArgList OptComma ]"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ArrayNode</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-48"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-48">#</a> </div> <p>The <strong>ArgList</strong> is both the list of objects passed into a function call,
|
||||
<span class="nx">ObjAssignable</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Identifier'</span>
|
||||
<span class="nx">o</span> <span class="s1">'AlphaNumeric'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Parenthetical'</span>
|
||||
<span class="nx">o</span> <span class="s1">'ThisProperty'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-19">¶</a> </div> <p>A return statement from a function body.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Return</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'RETURN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Return</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'RETURN'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Return</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-20">¶</a> </div> <p>A block comment.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Comment</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'HERECOMMENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Comment</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-21">¶</a> </div> <p>The <strong>Code</strong> node is the function literal. It's defined by an indented block
|
||||
of <strong>Expressions</strong> preceded by a function arrow, with an optional parameter
|
||||
list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Code</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'PARAM_START ParamList PARAM_END FuncGlyph Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Code</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'FuncGlyph Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Code</span> <span class="p">[],</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-22">¶</a> </div> <p>CoffeeScript has two different symbols for functions. <code>-></code> is for ordinary
|
||||
functions, and <code>=></code> is for functions bound to the current value of <em>this</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">FuncGlyph</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'->'</span><span class="p">,</span> <span class="o">-></span> <span class="s1">'func'</span>
|
||||
<span class="nx">o</span> <span class="s1">'=>'</span><span class="p">,</span> <span class="o">-></span> <span class="s1">'boundfunc'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-23">¶</a> </div> <p>An optional, trailing comma.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">OptComma</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">''</span>
|
||||
<span class="nx">o</span> <span class="s1">','</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-24">¶</a> </div> <p>The list of parameters that a function accepts can be of any length.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ParamList</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">''</span><span class="p">,</span> <span class="o">-></span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s1">'Param'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'ParamList , Param'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-25">¶</a> </div> <p>A single parameter in a function definition can be ordinary, or a splat
|
||||
that hoovers up the remaining arguments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Param</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'ParamVar'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Param</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'ParamVar ...'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Param</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">on</span>
|
||||
<span class="nx">o</span> <span class="s1">'ParamVar = Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Param</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">ParamVar</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Identifier'</span>
|
||||
<span class="nx">o</span> <span class="s1">'ThisProperty'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Array'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Object'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-26">¶</a> </div> <p>A splat that occurs outside of a parameter list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Splat</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression ...'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Splat</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-27"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-27">¶</a> </div> <p>Variables and properties that can be assigned to.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">SimpleAssignable</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Identifier'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'Value Accessor'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'Invocation Accessor'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span><span class="p">,</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'ThisProperty'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-28"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-28">¶</a> </div> <p>Everything that can be assigned to.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Assignable</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'SimpleAssignable'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Array'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'Object'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-29"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-29">¶</a> </div> <p>The types of things that can be treated as values -- assigned to, invoked
|
||||
as functions, indexed into, named as a class, etc.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Value</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Assignable'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Literal'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'Parenthetical'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'This'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-30"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-30">¶</a> </div> <p>The general group of accessors into an object, by property, by prototype
|
||||
or by array index or slice.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Accessor</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'. Identifier'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Accessor</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'?. Identifier'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Accessor</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">'soak'</span>
|
||||
<span class="nx">o</span> <span class="s1">':: Identifier'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Accessor</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">'proto'</span>
|
||||
<span class="nx">o</span> <span class="s1">'::'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Accessor</span> <span class="k">new</span> <span class="nx">Literal</span> <span class="s1">'prototype'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Index'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-31"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-31">¶</a> </div> <p>Indexing into an object or array using bracket notation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Index</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'INDEX_START Expression INDEX_END'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Index</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'INDEX_SOAK Index'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">soak</span> <span class="o">:</span> <span class="kc">yes</span>
|
||||
<span class="nx">o</span> <span class="s1">'INDEX_PROTO Index'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">proto</span><span class="o">:</span> <span class="kc">yes</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-32"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-32">¶</a> </div> <p>In CoffeeScript, an object literal is simply a list of assignments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nb">Object</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'{ AssignList OptComma }'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Obj</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">generated</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-33"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-33">¶</a> </div> <p>Assignment of properties within an object literal can be separated by
|
||||
comma, as in JavaScript, or simply by newline.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">AssignList</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">''</span><span class="p">,</span> <span class="o">-></span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s1">'AssignObj'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'AssignList , AssignObj'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'AssignList OptComma TERMINATOR AssignObj'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'AssignList OptComma INDENT AssignList OptComma OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-34"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-34">¶</a> </div> <p>Class definitions have optional bodies of prototype property assignments,
|
||||
and optional references to the superclass.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Class</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS EXTENDS Value'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS EXTENDS Value Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS SimpleAssignable'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS SimpleAssignable Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS SimpleAssignable EXTENDS Value'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'CLASS SimpleAssignable EXTENDS Value Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Class</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$5</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-35"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-35">¶</a> </div> <p>Ordinary function invocation, or a chained series of calls.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Invocation</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Value OptFuncExist Arguments'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Call</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'Invocation OptFuncExist Arguments'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Call</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'SUPER'</span><span class="p">,</span> <span class="o">-></span>
|
||||
<span class="k">new</span> <span class="nx">Call</span> <span class="s1">'super'</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">Splat</span> <span class="k">new</span> <span class="nx">Literal</span> <span class="s1">'arguments'</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'SUPER Arguments'</span><span class="p">,</span> <span class="o">-></span>
|
||||
<span class="k">new</span> <span class="nx">Call</span> <span class="s1">'super'</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-36"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-36">¶</a> </div> <p>An optional existence check on a function.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">OptFuncExist</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">''</span><span class="p">,</span> <span class="o">-></span> <span class="kc">no</span>
|
||||
<span class="nx">o</span> <span class="s1">'FUNC_EXIST'</span><span class="p">,</span> <span class="o">-></span> <span class="kc">yes</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-37"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-37">¶</a> </div> <p>The list of arguments to a function call.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Arguments</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'CALL_START CALL_END'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s1">'CALL_START ArgList OptComma CALL_END'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-38"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-38">¶</a> </div> <p>A reference to the <em>this</em> current object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">This</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'THIS'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="k">new</span> <span class="nx">Literal</span> <span class="s1">'this'</span>
|
||||
<span class="nx">o</span> <span class="s1">'@'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="k">new</span> <span class="nx">Literal</span> <span class="s1">'this'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-39"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-39">¶</a> </div> <p>A reference to a property on <em>this</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ThisProperty</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'@ Identifier'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="k">new</span> <span class="nx">Literal</span><span class="p">(</span><span class="s1">'this'</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">Accessor</span><span class="p">(</span><span class="nx">$2</span><span class="p">)],</span> <span class="s1">'this'</span>
|
||||
<span class="p">]</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 array literal.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nb">Array</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'[ ]'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Arr</span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s1">'[ ArgList OptComma ]'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Arr</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-41"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-41">¶</a> </div> <p>The <strong>ArgList</strong> is both the list of objects passed into a function call,
|
||||
as well as the contents of an array literal
|
||||
(i.e. comma-separated expressions). Newlines work as well.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ArgList</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Arg"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ArgList , Arg"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ArgList OptComma TERMINATOR Arg"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"INDENT ArgList OptComma OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"ArgList OptComma INDENT ArgList OptComma OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-49"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-49">#</a> </div> <p>Valid arguments are Expressions or Splats.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Arg</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Splat"</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-50"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-50">#</a> </div> <p>Just simple, comma-separated, required arguments (no fancy syntax). We need
|
||||
<span class="nx">o</span> <span class="s1">'Arg'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'ArgList , Arg'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'ArgList OptComma TERMINATOR Arg'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'INDENT ArgList OptComma OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'ArgList OptComma INDENT ArgList OptComma OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-42"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-42">¶</a> </div> <p>Valid arguments are Expressions or Splats.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Arg</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Splat'</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-43"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-43">¶</a> </div> <p>Just simple, comma-separated, required arguments (no fancy syntax). We need
|
||||
this to be separate from the <strong>ArgList</strong> for use in <strong>Switch</strong> blocks, where
|
||||
having the newlines wouldn't make sense.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">SimpleArgs</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression"</span>
|
||||
<span class="nx">o</span> <span class="s2">"SimpleArgs , Expression"</span><span class="p">,</span> <span class="o">-></span>
|
||||
<span class="k">if</span> <span class="nx">$1</span> <span class="k">instanceof</span> <span class="nb">Array</span> <span class="k">then</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span><span class="p">([</span><span class="nx">$3</span><span class="p">])</span> <span class="k">else</span> <span class="p">[</span><span class="nx">$1</span><span class="p">].</span><span class="nx">concat</span><span class="p">([</span><span class="nx">$3</span><span class="p">])</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-51"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-51">#</a> </div> <p>The variants of <em>try/catch/finally</em> exception handling blocks.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Try</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"TRY Block Catch"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"TRY Block FINALLY Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"TRY Block Catch FINALLY Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">$5</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-52"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-52">#</a> </div> <p>A catch clause names its error and runs a block of code.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Catch</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"CATCH Identifier Block"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-53"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-53">#</a> </div> <p>Throw an exception object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Throw</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"THROW Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ThrowNode</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-54"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-54">#</a> </div> <p>Parenthetical expressions. Note that the <strong>Parenthetical</strong> is a <strong>Value</strong>,
|
||||
<span class="nx">o</span> <span class="s1">'Expression'</span>
|
||||
<span class="nx">o</span> <span class="s1">'SimpleArgs , Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[].</span><span class="nx">concat</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-44"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-44">¶</a> </div> <p>The variants of <em>try/catch/finally</em> exception handling blocks.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Try</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'TRY Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Try</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'TRY Block Catch'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Try</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'TRY Block FINALLY Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Try</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'TRY Block Catch FINALLY Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Try</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">$5</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-45"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-45">¶</a> </div> <p>A catch clause names its error and runs a block of code.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Catch</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'CATCH Identifier Block'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-46"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-46">¶</a> </div> <p>Throw an exception object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Throw</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'THROW Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Throw</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-47"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-47">¶</a> </div> <p>Parenthetical expressions. Note that the <strong>Parenthetical</strong> is a <strong>Value</strong>,
|
||||
not an <strong>Expression</strong>, so if you need to use an expression in a place
|
||||
where only values are accepted, wrapping it in parentheses will always do
|
||||
the trick.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Parenthetical</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"( Line )"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ParentheticalNode</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"( )"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ParentheticalNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">''</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-55">#</a> </div> <p>The condition portion of a while loop.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">WhileSource</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"WHILE Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"WHILE Expression WHEN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"UNTIL Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"UNTIL Expression WHEN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-56"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-56">#</a> </div> <p>The while loop can either be normal, with a block of expressions to execute,
|
||||
<span class="nx">o</span> <span class="s1">'( Expression )'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Parens</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-48"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-48">¶</a> </div> <p>The condition portion of a while loop.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">WhileSource</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'WHILE Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">While</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'WHILE Expression WHEN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">While</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'UNTIL Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">While</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s1">'UNTIL Expression WHEN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">While</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-49"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-49">¶</a> </div> <p>The while loop can either be normal, with a block of expressions to execute,
|
||||
or postfix, with a single expression. There is no do..while.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">While</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"WhileSource Block"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">addBody</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"Statement WhileSource"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span><span class="p">.</span><span class="nx">addBody</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression WhileSource"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span><span class="p">.</span><span class="nx">addBody</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"Loop"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'WhileSource Block'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">addBody</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'Statement WhileSource'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span><span class="p">.</span><span class="nx">addBody</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression WhileSource'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span><span class="p">.</span><span class="nx">addBody</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s1">'Loop'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">Loop</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"LOOP Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">WhileNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">'true'</span><span class="p">).</span><span class="nx">addBody</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"LOOP Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">WhileNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">'true'</span><span class="p">).</span><span class="nx">addBody</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-57"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-57">#</a> </div> <p>Array, object, and range comprehensions, at the most generic level.
|
||||
<span class="nx">o</span> <span class="s1">'LOOP Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">While</span><span class="p">(</span><span class="k">new</span> <span class="nx">Literal</span> <span class="s1">'true'</span><span class="p">).</span><span class="nx">addBody</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'LOOP Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">While</span><span class="p">(</span><span class="k">new</span> <span class="nx">Literal</span> <span class="s1">'true'</span><span class="p">).</span><span class="nx">addBody</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-50"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-50">¶</a> </div> <p>Array, object, and range comprehensions, at the most generic level.
|
||||
Comprehensions can either be normal, with a block of expressions to execute,
|
||||
or postfix, with a single expression.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">For</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Statement ForBody"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ForNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">vars</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">vars</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression ForBody"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ForNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">vars</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">vars</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ForBody Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ForNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">vars</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">vars</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">ForBody</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"FOR Range"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$2</span><span class="p">),</span> <span class="nx">vars</span><span class="o">:</span> <span class="p">[]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ForStart ForSource"</span><span class="p">,</span> <span class="o">-></span> <span class="nv">$2.raw = </span><span class="nx">$1</span><span class="p">.</span><span class="nx">raw</span><span class="p">;</span> <span class="nv">$2.vars = </span><span class="nx">$1</span><span class="p">;</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">ForStart</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"FOR ForVariables"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"FOR ALL ForVariables"</span><span class="p">,</span> <span class="o">-></span> <span class="nv">$3.raw = </span><span class="kc">true</span><span class="p">;</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-58"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-58">#</a> </div> <p>An array of all accepted values for a variable inside the loop. This
|
||||
<span class="nx">o</span> <span class="s1">'Statement ForBody'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">For</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression ForBody'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">For</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'ForBody Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">For</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-51"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-51">¶</a> </div> <p>An array of all accepted values for a variable inside the loop. This
|
||||
enables support for pattern matching.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ForValue</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"Identifier"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Array"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s2">"Object"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-59"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-59">#</a> </div> <p>An array or range comprehension has variables for the current element and
|
||||
(optional) reference to the current index. Or, <em>key, value</em>, in the case
|
||||
of object comprehensions.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ForVariables</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"ForValue"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
|
||||
<span class="nx">o</span> <span class="s2">"ForValue , ForValue"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[</span><span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-60"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-60">#</a> </div> <p>The source of a comprehension is an array or object with an optional guard
|
||||
<span class="nx">o</span> <span class="s1">'Identifier'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Array'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="nx">o</span> <span class="s1">'Object'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Value</span> <span class="nx">$1</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">ForIn</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'FORIN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'FORIN Expression WHEN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'FORIN Expression BY Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">step</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'FORIN Expression BY Expression WHEN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">step</span><span class="o">:</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$6</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">ForOf</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOROF Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">object</span><span class="o">:</span> <span class="kc">on</span><span class="p">,</span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOROF Expression WHEN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">object</span><span class="o">:</span> <span class="kc">on</span><span class="p">,</span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">ForTo</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'TO Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">to</span><span class="o">:</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'TO Expression WHEN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">to</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'TO Expression BY Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">to</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">step</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'TO Expression BY Expression WHEN Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">to</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">step</span><span class="o">:</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$6</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-52"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-52">¶</a> </div> <p>The source of a comprehension is an array or object with an optional guard
|
||||
clause. If it's an array comprehension, you can also choose to step through
|
||||
in fixed-size increments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ForSource</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"IN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"OF Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">object</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"IN Expression WHEN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"OF Expression WHEN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">object</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"IN Expression BY Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">step</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"IN Expression WHEN Expression BY Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">step</span><span class="o">:</span> <span class="nx">$6</span>
|
||||
<span class="nx">o</span> <span class="s2">"IN Expression BY Expression WHEN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">source</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">step</span><span class="o">:</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">guard</span><span class="o">:</span> <span class="nx">$6</span>
|
||||
in fixed-size increments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">ForBody</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOR ForValue ForIn'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">name</span><span class="o">:</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOR ForValue , Identifier ForIn'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$5</span><span class="p">,</span> <span class="nx">name</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">index</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOR Identifier ForOf'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">index</span><span class="o">:</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOR ForValue , ForValue ForOf'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$5</span><span class="p">,</span> <span class="nx">index</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">name</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOR ALL Identifier ForOf'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">raw</span><span class="o">:</span> <span class="kc">on</span><span class="p">,</span> <span class="nx">index</span><span class="o">:</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOR ALL Identifier , ForValue ForOf'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$6</span><span class="p">,</span> <span class="nx">raw</span><span class="o">:</span> <span class="kc">on</span><span class="p">,</span> <span class="nx">index</span><span class="o">:</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">name</span><span class="o">:</span> <span class="nx">$5</span>
|
||||
<span class="nx">o</span> <span class="s1">'FOR Identifier FROM Expression ForTo'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">extend</span> <span class="nx">$5</span><span class="p">,</span> <span class="nx">index</span><span class="o">:</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">from</span><span class="o">:</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">Switch</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"SWITCH Expression INDENT Whens OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">SwitchNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"SWITCH Expression INDENT Whens ELSE Block OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">SwitchNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$6</span>
|
||||
<span class="nx">o</span> <span class="s2">"SWITCH INDENT Whens OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">SwitchNode</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"SWITCH INDENT Whens ELSE Block OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">SwitchNode</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$5</span>
|
||||
<span class="nx">o</span> <span class="s1">'SWITCH Expression INDENT Whens OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Switch</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'SWITCH Expression INDENT Whens ELSE Block OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Switch</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$6</span>
|
||||
<span class="nx">o</span> <span class="s1">'SWITCH INDENT Whens OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Switch</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'SWITCH INDENT Whens ELSE Block OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Switch</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$5</span>
|
||||
<span class="p">]</span>
|
||||
|
||||
<span class="nx">Whens</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"When"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Whens When"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-61"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-61">#</a> </div> <p>An individual <strong>When</strong> clause, with action.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">When</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"LEADING_WHEN SimpleArgs Block"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]]</span>
|
||||
<span class="nx">o</span> <span class="s2">"LEADING_WHEN SimpleArgs Block TERMINATOR"</span><span class="p">,</span> <span class="o">-></span> <span class="p">[[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-62"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-62">#</a> </div> <p>The most basic form of <em>if</em> is a condition and an action. The following
|
||||
<span class="nx">o</span> <span class="s1">'When'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Whens When'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">$2</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-53"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-53">¶</a> </div> <p>An individual <strong>When</strong> clause, with action.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">When</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s1">'LEADING_WHEN SimpleArgs Block'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]]</span>
|
||||
<span class="nx">o</span> <span class="s1">'LEADING_WHEN SimpleArgs Block TERMINATOR'</span><span class="p">,</span> <span class="o">-></span> <span class="p">[[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]]</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>The most basic form of <em>if</em> is a condition and an action. The following
|
||||
if-related rules are broken up along these lines in order to avoid
|
||||
ambiguity.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">IfBlock</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"IF Expression Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"UNLESS Expression Block"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"IfBlock ELSE IF Expression Block"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">addElse</span> <span class="p">(</span><span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="nx">$4</span><span class="p">,</span> <span class="nx">$5</span><span class="p">)).</span><span class="nx">forceStatement</span><span class="p">()</span>
|
||||
<span class="nx">o</span> <span class="s2">"IfBlock ELSE Block"</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">addElse</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-63"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-63">#</a> </div> <p>The full complement of <em>if</em> expressions, including postfix one-liner
|
||||
<span class="nx">o</span> <span class="s1">'IF Expression Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">If</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'UNLESS Expression Block'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">If</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s1">'IfBlock ELSE IF Expression Block'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">addElse</span> <span class="k">new</span> <span class="nx">If</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$5</span>
|
||||
<span class="nx">o</span> <span class="s1">'IfBlock ELSE Block'</span><span class="p">,</span> <span class="o">-></span> <span class="nx">$1</span><span class="p">.</span><span class="nx">addElse</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-55">¶</a> </div> <p>The full complement of <em>if</em> expressions, including postfix one-liner
|
||||
<em>if</em> and <em>unless</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">If</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"IfBlock"</span>
|
||||
<span class="nx">o</span> <span class="s2">"Statement POST_IF Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression POST_IF Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"Statement POST_UNLESS Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression POST_UNLESS Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-64"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-64">#</a> </div> <p>Arithmetic and logical operators, working on one or more operands.
|
||||
<span class="nx">o</span> <span class="s1">'IfBlock'</span>
|
||||
<span class="nx">o</span> <span class="s1">'Statement POST_IF Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">If</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression POST_IF Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">If</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s1">'Statement POST_UNLESS Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">If</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression POST_UNLESS Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">If</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="nx">statement</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span> <span class="nx">invert</span><span class="o">:</span> <span class="kc">true</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-56"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-56">¶</a> </div> <p>Arithmetic and logical operators, working on one or more operands.
|
||||
Here they are grouped by order of precedence. The actual precedence rules
|
||||
are defined at the bottom of the page. It would be shorter if we could
|
||||
combine most of these rules into a single generic <em>Operand OpSymbol Operand</em>
|
||||
-type rule, but in order to make the precedence binding possible, separate
|
||||
rules are necessary.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Operation</span><span class="o">:</span> <span class="p">[</span>
|
||||
<span class="nx">o</span> <span class="s2">"UNARY Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span><span class="p">(</span><span class="s2">"- Expression"</span><span class="p">,</span> <span class="p">(</span><span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">'-'</span><span class="p">,</span> <span class="nx">$2</span><span class="p">)),</span> <span class="p">{</span><span class="nx">prec</span><span class="o">:</span> <span class="s1">'UNARY'</span><span class="p">})</span>
|
||||
<span class="nx">o</span><span class="p">(</span><span class="s2">"+ Expression"</span><span class="p">,</span> <span class="p">(</span><span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">'+'</span><span class="p">,</span> <span class="nx">$2</span><span class="p">)),</span> <span class="p">{</span><span class="nx">prec</span><span class="o">:</span> <span class="s1">'UNARY'</span><span class="p">})</span>
|
||||
<span class="nx">o</span> <span class="s1">'UNARY Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="nx">$1</span> <span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'- Expression'</span><span class="p">,</span> <span class="p">(</span><span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'-'</span><span class="p">,</span> <span class="nx">$2</span><span class="p">),</span> <span class="nx">prec</span><span class="o">:</span> <span class="s1">'UNARY'</span>
|
||||
<span class="nx">o</span> <span class="s1">'+ Expression'</span><span class="p">,</span> <span class="p">(</span><span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'+'</span><span class="p">,</span> <span class="nx">$2</span><span class="p">),</span> <span class="nx">prec</span><span class="o">:</span> <span class="s1">'UNARY'</span>
|
||||
|
||||
<span class="nx">o</span> <span class="s2">"-- Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'--'</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"++ Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'++'</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression --"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'--'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression ++"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'++'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s1">'-- SimpleAssignable'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'--'</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'++ SimpleAssignable'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'++'</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'SimpleAssignable --'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'--'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span>
|
||||
<span class="nx">o</span> <span class="s1">'SimpleAssignable ++'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'++'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span></pre></div> </td> </tr> <tr id="section-57"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-57">¶</a> </div> <p><a href="http://jashkenas.github.com/coffee-script/#existence">The existential operator</a>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">o</span> <span class="s1">'Expression ?'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Existence</span> <span class="nx">$1</span>
|
||||
|
||||
<span class="nx">o</span> <span class="s2">"Expression ? Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'?'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression + Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'+'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression - Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'-'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression == Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'=='</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression != Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'!='</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression + Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'+'</span> <span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression - Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="s1">'-'</span> <span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
|
||||
<span class="nx">o</span> <span class="s2">"Expression MATH Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression SHIFT Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression COMPARE Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression LOGIC Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Value COMPOUND_ASSIGN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Value COMPOUND_ASSIGN INDENT Expression OUTDENT"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression MATH Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression SHIFT Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression COMPARE Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression LOGIC Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Op</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s1">'Expression RELATION Expression'</span><span class="p">,</span> <span class="o">-></span>
|
||||
<span class="k">if</span> <span class="nx">$2</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">is</span> <span class="s1">'!'</span>
|
||||
<span class="k">new</span> <span class="nx">Op</span><span class="p">(</span><span class="nx">$2</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="mi">1</span><span class="p">),</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">).</span><span class="nx">invert</span><span class="p">()</span>
|
||||
<span class="k">else</span>
|
||||
<span class="k">new</span> <span class="nx">Op</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
|
||||
<span class="nx">o</span> <span class="s2">"Expression IN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">InNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression OF Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'in'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression INSTANCEOF Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'instanceof'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression UNARY IN Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="k">new</span> <span class="nx">InNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression UNARY OF Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="k">new</span> <span class="nx">ParentheticalNode</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'in'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="nx">o</span> <span class="s2">"Expression UNARY INSTANCEOF Expression"</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="k">new</span> <span class="nx">ParentheticalNode</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">'instanceof'</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-65"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-65">#</a> </div> <h2>Precedence</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-66"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-66">#</a> </div> <p>Operators at the top of this list have higher precedence than the ones lower
|
||||
<span class="nx">o</span> <span class="s1">'SimpleAssignable COMPOUND_ASSIGN</span>
|
||||
<span class="s1"> Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Assign</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'SimpleAssignable COMPOUND_ASSIGN</span>
|
||||
<span class="s1"> INDENT Expression OUTDENT'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Assign</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$2</span>
|
||||
<span class="nx">o</span> <span class="s1">'SimpleAssignable EXTENDS Expression'</span><span class="p">,</span> <span class="o">-></span> <span class="k">new</span> <span class="nx">Extends</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-58"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-58">¶</a> </div> <h2>Precedence</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-59"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-59">¶</a> </div> <p>Operators at the top of this list have higher precedence than the ones lower
|
||||
down. Following these rules is what makes <code>2 + 3 * 4</code> parse as:</p>
|
||||
|
||||
<pre><code>2 + (3 * 4)
|
||||
|
|
@ -382,40 +360,38 @@ down. Following these rules is what makes <code>2 + 3 * 4</code> parse as:</p>
|
|||
|
||||
<pre><code>(2 + 3) * 4
|
||||
</code></pre> </td> <td class="code"> <div class="highlight"><pre><span class="nv">operators = </span><span class="p">[</span>
|
||||
<span class="p">[</span><span class="s2">"right"</span><span class="p">,</span> <span class="s1">'?'</span><span class="p">,</span> <span class="s1">'NEW'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'CALL_START'</span><span class="p">,</span> <span class="s1">'CALL_END'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"nonassoc"</span><span class="p">,</span> <span class="s1">'++'</span><span class="p">,</span> <span class="s1">'--'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"right"</span><span class="p">,</span> <span class="s1">'UNARY'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'MATH'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'+'</span><span class="p">,</span> <span class="s1">'-'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'SHIFT'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'COMPARE'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'INSTANCEOF'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'=='</span><span class="p">,</span> <span class="s1">'!='</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'LOGIC'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"right"</span><span class="p">,</span> <span class="s1">'COMPOUND_ASSIGN'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"left"</span><span class="p">,</span> <span class="s1">'.'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"nonassoc"</span><span class="p">,</span> <span class="s1">'INDENT'</span><span class="p">,</span> <span class="s1">'OUTDENT'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"right"</span><span class="p">,</span> <span class="s1">'WHEN'</span><span class="p">,</span> <span class="s1">'LEADING_WHEN'</span><span class="p">,</span> <span class="s1">'IN'</span><span class="p">,</span> <span class="s1">'OF'</span><span class="p">,</span> <span class="s1">'BY'</span><span class="p">,</span> <span class="s1">'THROW'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"right"</span><span class="p">,</span> <span class="s1">'IF'</span><span class="p">,</span> <span class="s1">'UNLESS'</span><span class="p">,</span> <span class="s1">'ELSE'</span><span class="p">,</span> <span class="s1">'FOR'</span><span class="p">,</span> <span class="s1">'WHILE'</span><span class="p">,</span> <span class="s1">'UNTIL'</span><span class="p">,</span> <span class="s1">'LOOP'</span><span class="p">,</span> <span class="s1">'SUPER'</span><span class="p">,</span> <span class="s1">'CLASS'</span><span class="p">,</span> <span class="s1">'EXTENDS'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"right"</span><span class="p">,</span> <span class="s1">'='</span><span class="p">,</span> <span class="s1">':'</span><span class="p">,</span> <span class="s1">'RETURN'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s2">"right"</span><span class="p">,</span> <span class="s1">'->'</span><span class="p">,</span> <span class="s1">'=>'</span><span class="p">,</span> <span class="s1">'UNLESS'</span><span class="p">,</span> <span class="s1">'POST_IF'</span><span class="p">,</span> <span class="s1">'POST_UNLESS'</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-67"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-67">#</a> </div> <h2>Wrapping Up</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-68"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-68">#</a> </div> <p>Finally, now what we have our <strong>grammar</strong> and our <strong>operators</strong>, we can create
|
||||
<span class="p">[</span><span class="s1">'left'</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="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'CALL_START'</span><span class="p">,</span> <span class="s1">'CALL_END'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'nonassoc'</span><span class="p">,</span> <span class="s1">'++'</span><span class="p">,</span> <span class="s1">'--'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'?'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'right'</span><span class="p">,</span> <span class="s1">'UNARY'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'MATH'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'+'</span><span class="p">,</span> <span class="s1">'-'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'SHIFT'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'RELATION'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'COMPARE'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'left'</span><span class="p">,</span> <span class="s1">'LOGIC'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'nonassoc'</span><span class="p">,</span> <span class="s1">'INDENT'</span><span class="p">,</span> <span class="s1">'OUTDENT'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'right'</span><span class="p">,</span> <span class="s1">'='</span><span class="p">,</span> <span class="s1">':'</span><span class="p">,</span> <span class="s1">'COMPOUND_ASSIGN'</span><span class="p">,</span> <span class="s1">'RETURN'</span><span class="p">,</span> <span class="s1">'THROW'</span><span class="p">,</span> <span class="s1">'EXTENDS'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'right'</span><span class="p">,</span> <span class="s1">'FORIN'</span><span class="p">,</span> <span class="s1">'FOROF'</span><span class="p">,</span> <span class="s1">'FROM'</span><span class="p">,</span> <span class="s1">'TO'</span><span class="p">,</span> <span class="s1">'BY'</span><span class="p">,</span> <span class="s1">'WHEN'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'right'</span><span class="p">,</span> <span class="s1">'IF'</span><span class="p">,</span> <span class="s1">'UNLESS'</span><span class="p">,</span> <span class="s1">'ELSE'</span><span class="p">,</span> <span class="s1">'FOR'</span><span class="p">,</span> <span class="s1">'WHILE'</span><span class="p">,</span> <span class="s1">'UNTIL'</span><span class="p">,</span> <span class="s1">'LOOP'</span><span class="p">,</span> <span class="s1">'SUPER'</span><span class="p">,</span> <span class="s1">'CLASS'</span><span class="p">]</span>
|
||||
<span class="p">[</span><span class="s1">'right'</span><span class="p">,</span> <span class="s1">'POST_IF'</span><span class="p">,</span> <span class="s1">'POST_UNLESS'</span><span class="p">]</span>
|
||||
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-60"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-60">¶</a> </div> <h2>Wrapping Up</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-61"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-61">¶</a> </div> <p>Finally, now what we have our <strong>grammar</strong> and our <strong>operators</strong>, we can create
|
||||
our <strong>Jison.Parser</strong>. We do this by processing all of our rules, recording all
|
||||
terminals (every symbol which does not appear as the name of a rule above)
|
||||
as "tokens".</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">tokens = </span><span class="p">[]</span>
|
||||
<span class="k">for</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">alternatives</span> <span class="k">of</span> <span class="nx">grammar</span>
|
||||
<span class="k">for</span> <span class="nx">all</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">alternatives</span> <span class="k">of</span> <span class="nx">grammar</span>
|
||||
<span class="nx">grammar</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="k">for</span> <span class="nx">alt</span> <span class="k">in</span> <span class="nx">alternatives</span>
|
||||
<span class="k">for</span> <span class="nx">token</span> <span class="k">in</span> <span class="nx">alt</span><span class="p">[</span><span class="mi">0</span><span class="p">].</span><span class="nx">split</span> <span class="s1">' '</span>
|
||||
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="nx">token</span> <span class="nx">unless</span> <span class="nx">grammar</span><span class="p">[</span><span class="nx">token</span><span class="p">]</span>
|
||||
<span class="nx">alt</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"return #{alt[1]}"</span> <span class="k">if</span> <span class="nx">name</span> <span class="o">is</span> <span class="s1">'Root'</span>
|
||||
<span class="nx">alt</span></pre></div> </td> </tr> <tr id="section-69"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-69">#</a> </div> <p>Initialize the <strong>Parser</strong> with our list of terminal <strong>tokens</strong>, our <strong>grammar</strong>
|
||||
<span class="nx">alt</span></pre></div> </td> </tr> <tr id="section-62"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-62">¶</a> </div> <p>Initialize the <strong>Parser</strong> with our list of terminal <strong>tokens</strong>, our <strong>grammar</strong>
|
||||
rules, and the name of the root. Reverse the operators because Jison orders
|
||||
precedence from low to high, and we have it high to low
|
||||
(as in <a href="http://dinosaur.compilertools.net/yacc/index.html">Yacc</a>).</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.parser = </span><span class="k">new</span> <span class="nx">Parser</span>
|
||||
<span class="nx">tokens</span><span class="o">:</span> <span class="nx">tokens</span><span class="p">.</span><span class="nx">join</span> <span class="s1">' '</span>
|
||||
<span class="nx">bnf</span><span class="o">:</span> <span class="nx">grammar</span>
|
||||
<span class="nx">operators</span><span class="o">:</span> <span class="nx">operators</span><span class="p">.</span><span class="nx">reverse</span><span class="p">()</span>
|
||||
<span class="nx">startSymbol</span><span class="o">:</span> <span class="s1">'Root'</span>
|
||||
<span class="nx">tokens</span> <span class="o">:</span> <span class="nx">tokens</span><span class="p">.</span><span class="nx">join</span> <span class="s1">' '</span>
|
||||
<span class="nx">bnf</span> <span class="o">:</span> <span class="nx">grammar</span>
|
||||
<span class="nx">operators</span> <span class="o">:</span> <span class="nx">operators</span><span class="p">.</span><span class="nx">reverse</span><span class="p">()</span>
|
||||
<span class="nx">startSymbol</span> <span class="o">:</span> <span class="s1">'Root'</span>
|
||||
|
||||
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>
|
||||
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