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CoffeeScript 1.9.0

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Jeremy Ashkenas 2015-01-29 12:20:46 -05:00
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@ -188,11 +188,11 @@ parens. Unwrap all that.</p>
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<p>Generate the AST of the clean input.</p>
<p>Tokenize the clean input.</p>
</div>
<div class="content"><div class='highlight'><pre> ast = CoffeeScript.nodes input</pre></div></div>
<div class="content"><div class='highlight'><pre> tokens = CoffeeScript.tokens input</pre></div></div>
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<p>Add assignment to <code>_</code> variable to force the input to be an expression.</p>
<p>Collect referenced variable names just like in <code>CoffeeScript.compile</code>.</p>
</div>
<div class="content"><div class='highlight'><pre> ast = <span class="hljs-keyword">new</span> Block [
<span class="hljs-keyword">new</span> Assign (<span class="hljs-keyword">new</span> Value <span class="hljs-keyword">new</span> Literal <span class="hljs-string">'_'</span>), ast, <span class="hljs-string">'='</span>
]
js = ast.compile <span class="hljs-attribute">bare</span>: <span class="hljs-literal">yes</span>, <span class="hljs-attribute">locals</span>: Object.keys(context)
result = <span class="hljs-keyword">if</span> context <span class="hljs-keyword">is</span> <span class="hljs-built_in">global</span>
vm.runInThisContext js, filename
<span class="hljs-keyword">else</span>
vm.runInContext js, context, filename
cb <span class="hljs-literal">null</span>, result
<span class="hljs-keyword">catch</span> err</pre></div></div>
<div class="content"><div class='highlight'><pre> referencedVars = (
token[<span class="hljs-number">1</span>] <span class="hljs-keyword">for</span> token <span class="hljs-keyword">in</span> tokens <span class="hljs-keyword">when</span> token.variable <span class="hljs-keyword">and</span> token[<span class="hljs-number">1</span>].charAt(<span class="hljs-number">0</span>) <span class="hljs-keyword">is</span> <span class="hljs-string">'_'</span>
)</pre></div></div>
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<p>AST’s <code>compile</code> does not add source code information to syntax errors.</p>
<p>Generate the AST of the tokens.</p>
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<div class="content"><div class='highlight'><pre> updateSyntaxError err, input
cb err
<span class="hljs-function"><span class="hljs-title">addMultilineHandler</span> = <span class="hljs-params">(repl)</span> -&gt;</span>
{rli, inputStream, outputStream} = repl</pre></div></div>
<div class="content"><div class='highlight'><pre> ast = CoffeeScript.nodes tokens</pre></div></div>
</li>
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<p>Add assignment to <code>_</code> variable to force the input to be an expression.</p>
</div>
<div class="content"><div class='highlight'><pre> ast = <span class="hljs-keyword">new</span> Block [
<span class="hljs-keyword">new</span> Assign (<span class="hljs-keyword">new</span> Value <span class="hljs-keyword">new</span> Literal <span class="hljs-string">'_'</span>), ast, <span class="hljs-string">'='</span>
]
js = ast.compile {<span class="hljs-attribute">bare</span>: <span class="hljs-literal">yes</span>, <span class="hljs-attribute">locals</span>: Object.keys(context), referencedVars}
result = <span class="hljs-keyword">if</span> context <span class="hljs-keyword">is</span> <span class="hljs-built_in">global</span>
vm.runInThisContext js, filename
<span class="hljs-keyword">else</span>
vm.runInContext js, context, filename
cb <span class="hljs-literal">null</span>, result
<span class="hljs-keyword">catch</span> err</pre></div></div>
</li>
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<p>AST’s <code>compile</code> does not add source code information to syntax errors.</p>
</div>
<div class="content"><div class='highlight'><pre> updateSyntaxError err, input
cb err
<span class="hljs-function">
<span class="hljs-title">addMultilineHandler</span> = <span class="hljs-params">(repl)</span> -&gt;</span>
{rli, inputStream, outputStream} = repl</pre></div></div>
</li>
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<p>Node 0.11.12 changed API, prompt is now _prompt.</p>
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<p>Proxy node’s line listener</p>
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<p>Handle Ctrl-v</p>
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<p>allow arbitrarily switching between modes any time before multiple lines are entered</p>
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<p>no-op unless the current line is empty</p>
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<p>eval, print, loop</p>
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<p>XXX: multiline hack</p>
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<p>Store and load command history from a file</p>
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<p>Get file info and at most maxSize of command history</p>
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<p>Read last <code>size</code> bytes from the file</p>
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<p>Set the history on the interpreter</p>
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<p>If the history file was truncated we should pop off a potential partial line</p>
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<p>Shift off the final blank newline</p>
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<p>Save the latest command in the file</p>
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<p>Add a command to show the history stack</p>
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<span class="hljs-attribute">action</span>:<span class="hljs-function"> -&gt;</span>
repl.outputStream.write <span class="hljs-string">"<span class="hljs-subst">#{repl.rli.history[..].reverse().join <span class="hljs-string">'\n'</span>}</span>\n"</span>
repl.displayPrompt()
<span class="hljs-function"><span class="hljs-title">getCommandId</span> = <span class="hljs-params">(repl, commandName)</span> -&gt;</span></pre></div></div>
<span class="hljs-function">
<span class="hljs-title">getCommandId</span> = <span class="hljs-params">(repl, commandName)</span> -&gt;</span></pre></div></div>
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<p>Node 0.11 changed API, a command such as ‘.help’ is now stored as ‘help’</p>
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<div class="content"><div class='highlight'><pre> commandsHaveLeadingDot = repl.commands[<span class="hljs-string">'.help'</span>]?
<span class="hljs-keyword">if</span> commandsHaveLeadingDot <span class="hljs-keyword">then</span> <span class="hljs-string">".<span class="hljs-subst">#{commandName}</span>"</span> <span class="hljs-keyword">else</span> commandName
<span class="hljs-built_in">module</span>.<span class="hljs-built_in">exports</span> =
<span class="hljs-built_in">module</span>.exports =
<span class="hljs-attribute">start</span>: <span class="hljs-function"><span class="hljs-params">(opts = {})</span> -&gt;</span>
[major, minor, build] = process.versions.node.split<span class="hljs-function"><span class="hljs-params">(<span class="hljs-string">'.'</span>)</span>.<span class="hljs-title">map</span> <span class="hljs-params">(n)</span> -&gt;</span> parseInt(n)
[major, minor, build] = process.versions.node.split(<span class="hljs-string">'.'</span>).map <span class="hljs-function"><span class="hljs-params">(n)</span> -&gt;</span> parseInt(n)
<span class="hljs-keyword">if</span> major <span class="hljs-keyword">is</span> <span class="hljs-number">0</span> <span class="hljs-keyword">and</span> minor &lt; <span class="hljs-number">8</span>
<span class="hljs-built_in">console</span>.warn <span class="hljs-string">"Node 0.8.0+ required for CoffeeScript REPL"</span>
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<p>Adapt help inherited from the node REPL</p>