178 lines
17 KiB
HTML
178 lines
17 KiB
HTML
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<html><head><title>Interpreter</title>
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<link rel='stylesheet' href='./../scdoc.css' type='text/css' />
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<link rel='stylesheet' href='./../frontend.css' type='text/css' />
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<link rel='stylesheet' href='./../custom.css' type='text/css' />
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<meta http-equiv='Content-Type' content='text/html; charset=UTF-8' />
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<script src='./../scdoc.js' type='text/javascript'></script>
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<script src='./../docmap.js' type='text/javascript'></script>
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<script src='./../prettify.js' type='text/javascript'></script>
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<script src='./../lang-sc.js' type='text/javascript'></script>
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<script type='text/javascript'>var helpRoot='./..';</script>
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</head>
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<ul id='menubar'></ul>
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<body onload='fixTOC();prettyPrint()'>
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<div class='contents'>
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<div class='header'>
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<div id='label'>SuperCollider CLASSES</div>
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<div id='categories'><a href='./../Browse.html#Core>Kernel'>Core>Kernel</a></div>
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<h1>Interpreter</h1>
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<div id='summary'>The interpreter defines a context in which interactive commands are compiled and executed.</div>
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</div>
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<div class='subheader'>
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<div id='filename'>Source: <a href='file:///Applications/SuperCollider.app/Contents/Resources/SCClassLibrary/Common/Core/Kernel.sc'>/Applications/SuperCollider.app/Contents/Resources/SCClassLibrary/Common/Core/Kernel.sc</a></div><div id='superclasses'>Inherits from: <a href="../Classes/Object.html">Object</a></div>
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<div id='related'>See also: <a href="./../How-to-Use-the-Interpreter">How-to-Use-the-Interpreter</a></div>
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</div>
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<div id='toc'>
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<ul class='toc'><li class='toc1'><a href='#description'>Description</a></li>
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<ul class='toc'></ul><li class='toc1'><a href='#classmethods'>Class methods</a></li>
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<ul class='toc'><li class='toc2'><a href='#Inherited%20class%20methods'>Inherited class methods</a></li>
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</ul><li class='toc1'><a href='#instancemethods'>Instance methods</a></li>
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<ul class='toc'><li class='toc2'><a href='#Accessing'>Accessing</a></li>
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<ul class='toc'><li class='toc3'><a href='#-clearAll'>clearAll</a> </li>
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</ul><li class='toc2'><a href='#Compile%20&%20Interpret'>Compile & Interpret</a></li>
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<ul class='toc'><li class='toc3'><a href='#-interpret'>interpret</a> </li>
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<li class='toc3'><a href='#-interpretPrint'>interpretPrint</a> </li>
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<li class='toc3'><a href='#-compile'>compile</a> </li>
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<li class='toc3'><a href='#-compileFile'>compileFile</a> </li>
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<li class='toc3'><a href='#-executeFile'>executeFile</a> </li>
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<li class='toc3'><a href='#-cmdLine'>cmdLine</a> </li>
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<li class='toc3'><a href='#-codeDump'>codeDump</a> </li>
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<li class='toc3'><a href='#-preProcessor'>preProcessor</a> </li>
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<li class='toc3'><a href='#-a'>a</a> <a href='#-b'>b</a> <a href='#-c'>c</a> <a href='#-d'>d</a> <a href='#-e'>e</a> <a href='#-f'>f</a> <a href='#-g'>g</a> <a href='#-h'>h</a> <a href='#-i'>i</a> <a href='#-j'>j</a> <a href='#-k'>k</a> <a href='#-l'>l</a> <a href='#-m'>m</a> <a href='#-n'>n</a> <a href='#-o'>o</a> <a href='#-p'>p</a> <a href='#-q'>q</a> <a href='#-r'>r</a> <a href='#-s'>s</a> <a href='#-t'>t</a> <a href='#-u'>u</a> <a href='#-v'>v</a> <a href='#-w'>w</a> <a href='#-x'>x</a> <a href='#-y'>y</a> <a href='#-z'>z</a> </li>
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</ul><li class='toc2'><a href='#Inherited%20instance%20methods'>Inherited instance methods</a></li>
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<li class='toc2'><a href='#Undocumented%20instance%20methods'>Undocumented instance methods</a></li>
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<ul class='toc'><li class='toc3'><a href='#-functionCompileContext'>functionCompileContext</a> </li>
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<li class='toc3'><a href='#-interpretCmdLine'>interpretCmdLine</a> </li>
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<li class='toc3'><a href='#-interpretPrintCmdLine'>interpretPrintCmdLine</a> </li>
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<li class='toc3'><a href='#-shallowCopy'>shallowCopy</a> </li>
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</ul></ul></ul></div><h2><a class='anchor' name='description'>Description</a></h2>
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<p>The interpreter is an object that handles the translation and execution of code at runtime. It is that what runs any program code and defines a context for it.<pre class='code prettyprint lang-sc'>(
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a = 5 + 7;
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this.cmdLine.postln;
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)</pre>
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<h2><a class='anchor' name='classmethods'>Class Methods</a></h2>
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<h3><a class='anchor' name='Inherited%20class%20methods'>Inherited class methods</a></h3>
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<div id='inheritedclassmets'></div><h2><a class='anchor' name='instancemethods'>Instance Methods</a></h2>
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<h3><a class='anchor' name='Accessing'>Accessing</a></h3>
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<p>In the interpreter, <code class='code prettyprint lang-sc'>this</code> refers to the interpreter itself, e.g.: <code class='code prettyprint lang-sc'>this.postln</code>
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<p>The interpreter defines global variables (<code class='code prettyprint lang-sc'>a</code> … <code class='code prettyprint lang-sc'>z</code>), that can be used for interactive programming. Except these single letter variables ("interpreter variables"), all variables have to be defined by the keyword <code class='code prettyprint lang-sc'>var</code> (see: <a href="./../Reference/Assignment.html">Assignment Statements</a>, and <a href="./../Reference/Scope.html">Scoping and Closure</a>).<pre class='code prettyprint lang-sc'>// typical usage
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a = 4;
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b = 3;
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b = b + a;
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// some sound
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a = Synth(\default);
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g = fork { loop { 0.1.wait; a.set(\freq, 200 + 20.0.rand2.postln) } };
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g.stop; a.free;
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// an overview of all the variables
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this.inspect;</pre>
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<div class='note'><span class='notelabel'>NOTE:</span> Use these variables with a bit of extra care – as they are global, they remain in memory and one piece of code may happen to interfere with another one. The variable <code class='code prettyprint lang-sc'>s</code> is by convention bound to the default server (<a href="./../Classes/Server.html">Server</a>) and should not be changed.</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-clearAll' href='./../Overviews/Methods.html#clearAll'>clearAll</a> </h3>
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<div class='method'>
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<p>set the values of the variables <code class='code prettyprint lang-sc'>a</code> through <code class='code prettyprint lang-sc'>z</code> to nil.<pre class='code prettyprint lang-sc'>x = 123;
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x.postln;
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this.clearAll;
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x.postln;</pre>
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</div><h3><a class='anchor' name='Compile%20&%20Interpret'>Compile & Interpret</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-interpret' href='./../Overviews/Methods.html#interpret'>interpret</a> (<span class='argstr'>string</span> <span class='argstr'>... args</span>)</h3>
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<div class='method'>
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<p>Compile and execute a <a href="./../Classes/String.html">String</a>.<pre class='code prettyprint lang-sc'>this.interpret("(123 + 4000).postln");</pre>
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</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-interpretPrint' href='./../Overviews/Methods.html#interpretPrint'>interpretPrint</a> (<span class='argstr'>string</span> <span class='argstr'>... args</span>)</h3>
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<div class='method'>
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<p>Compile and execute a <a href="./../Classes/String.html">String</a>, printing the result.<pre class='code prettyprint lang-sc'>this.interpretPrint("123 + 4000");</pre>
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</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-compile' href='./../Overviews/Methods.html#compile'>compile</a> (<span class='argstr'>string</span>)</h3>
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<div class='method'>
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<p>Compile a String and return a <a href="./../Classes/Function.html">Function</a>.<pre class='code prettyprint lang-sc'>(
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z = this.compile("(123 + 4000).postln");
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z.postln;
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z.value;
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)</pre>
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</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-compileFile' href='./../Overviews/Methods.html#compileFile'>compileFile</a> (<span class='argstr'>pathName</span>)</h3>
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<div class='method'>
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<p>Reads the file at pathName, compiles it and returns a Function. The file must contain a valid SuperCollider expression, naturally. This will not compile class definitions, only expressions.</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-executeFile' href='./../Overviews/Methods.html#executeFile'>executeFile</a> (<span class='argstr'>pathName</span> <span class='argstr'>... args</span>)</h3>
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<div class='method'>
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<p>Reads the file at pathName, compiles it and executes it, returning the result. The file must contain a valid SuperCollider expression, naturally. This will not compile class definitions, only expressions.</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-cmdLine' href='./../Overviews/Methods.html#cmdLine'>cmdLine</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-cmdLine' href='./../Overviews/Methods.html#cmdLine'>cmdLine</a> = value</h3>
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<div class='method'>
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<p>Returns the previously interpreted code.<pre class='code prettyprint lang-sc'>1 + 2;
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this.cmdLine</pre>
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</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-codeDump' href='./../Overviews/Methods.html#codeDump'>codeDump</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-codeDump' href='./../Overviews/Methods.html#codeDump'>codeDump</a> = value</h3>
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<div class='method'>
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<p>this interpreter variable can be set to evaluate a function with any successfully compiled code. see e.g. the class History.<pre class='code prettyprint lang-sc'>a = [ ]; // store all the code evaluated in a
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this.codeDump = { |code| a = a.add(code) };
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1 + 3;
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f = { "hallo" };
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a.postcs;
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codeDump = nil; // reset to nil.</pre>
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</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-preProcessor' href='./../Overviews/Methods.html#preProcessor'>preProcessor</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-preProcessor' href='./../Overviews/Methods.html#preProcessor'>preProcessor</a> = value</h3>
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<div class='method'>
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<p>can be used to modify code before it is interpreted. Given appropriate delimiters, this can be used to implement little languages.<pre class='code prettyprint lang-sc'>// silly but simple: understand a Saw for every SinOsc
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this.preProcessor = { |code| code.replace("SinOsc", "Saw") };
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{ SinOsc.ar(200) * 0.1 }.play;
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preProcessor = nil; // reset to nil.</pre>
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</div><h3 class='imethodname'><span class='methprefix'>-</span><a name='-a' href='./../Overviews/Methods.html#a'>a</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-a' href='./../Overviews/Methods.html#a'>a</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-b' href='./../Overviews/Methods.html#b'>b</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-b' href='./../Overviews/Methods.html#b'>b</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-c' href='./../Overviews/Methods.html#c'>c</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-c' href='./../Overviews/Methods.html#c'>c</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-d' href='./../Overviews/Methods.html#d'>d</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-d' href='./../Overviews/Methods.html#d'>d</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-e' href='./../Overviews/Methods.html#e'>e</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-e' href='./../Overviews/Methods.html#e'>e</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-f' href='./../Overviews/Methods.html#f'>f</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-f' href='./../Overviews/Methods.html#f'>f</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-g' href='./../Overviews/Methods.html#g'>g</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-g' href='./../Overviews/Methods.html#g'>g</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-h' href='./../Overviews/Methods.html#h'>h</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-h' href='./../Overviews/Methods.html#h'>h</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-i' href='./../Overviews/Methods.html#i'>i</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-i' href='./../Overviews/Methods.html#i'>i</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-j' href='./../Overviews/Methods.html#j'>j</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-j' href='./../Overviews/Methods.html#j'>j</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-k' href='./../Overviews/Methods.html#k'>k</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-k' href='./../Overviews/Methods.html#k'>k</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-l' href='./../Overviews/Methods.html#l'>l</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-l' href='./../Overviews/Methods.html#l'>l</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-m' href='./../Overviews/Methods.html#m'>m</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-m' href='./../Overviews/Methods.html#m'>m</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-n' href='./../Overviews/Methods.html#n'>n</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-n' href='./../Overviews/Methods.html#n'>n</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-o' href='./../Overviews/Methods.html#o'>o</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-o' href='./../Overviews/Methods.html#o'>o</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-p' href='./../Overviews/Methods.html#p'>p</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-p' href='./../Overviews/Methods.html#p'>p</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-q' href='./../Overviews/Methods.html#q'>q</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-q' href='./../Overviews/Methods.html#q'>q</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-r' href='./../Overviews/Methods.html#r'>r</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-r' href='./../Overviews/Methods.html#r'>r</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-s' href='./../Overviews/Methods.html#s'>s</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-s' href='./../Overviews/Methods.html#s'>s</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-t' href='./../Overviews/Methods.html#t'>t</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-t' href='./../Overviews/Methods.html#t'>t</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-u' href='./../Overviews/Methods.html#u'>u</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-u' href='./../Overviews/Methods.html#u'>u</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-v' href='./../Overviews/Methods.html#v'>v</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-v' href='./../Overviews/Methods.html#v'>v</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-w' href='./../Overviews/Methods.html#w'>w</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-w' href='./../Overviews/Methods.html#w'>w</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-x' href='./../Overviews/Methods.html#x'>x</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-x' href='./../Overviews/Methods.html#x'>x</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-y' href='./../Overviews/Methods.html#y'>y</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-y' href='./../Overviews/Methods.html#y'>y</a> = value</h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-z' href='./../Overviews/Methods.html#z'>z</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-z' href='./../Overviews/Methods.html#z'>z</a> = value</h3>
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<div class='method'>
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<p>Global variables ("interpreter variables") for interactive programming (see <a href="#Accessing">Accessing</a>).</div><h3><a class='anchor' name='Inherited%20instance%20methods'>Inherited instance methods</a></h3>
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<div id='inheritedinstmets'></div><h3><a class='anchor' name='Undocumented%20instance%20methods'>Undocumented instance methods</a></h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-functionCompileContext' href='./../Overviews/Methods.html#functionCompileContext'>functionCompileContext</a> </h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-interpretCmdLine' href='./../Overviews/Methods.html#interpretCmdLine'>interpretCmdLine</a> </h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-interpretPrintCmdLine' href='./../Overviews/Methods.html#interpretPrintCmdLine'>interpretPrintCmdLine</a> </h3>
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<h3 class='imethodname'><span class='methprefix'>-</span><a name='-shallowCopy' href='./../Overviews/Methods.html#shallowCopy'>shallowCopy</a> </h3>
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<div class='doclink'>helpfile source: <a href='file:///Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/Interpreter.schelp'>/Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/Interpreter.schelp</a><br>link::Classes/Interpreter::<br>sc version: 3.8.0</div></div></body></html>
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