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<head><title>futureParser -- forward reference to a parser not defined yet</title>
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<div><a href="index.html" title="a framework for building parsers">Parsing</a> > <a href="___Parser.html" title="the class of all parsers">Parser</a> > <a href="_future__Parser.html" title="forward reference to a parser not defined yet">futureParser</a></div>
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<div><h1>futureParser -- forward reference to a parser not defined yet</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>futureParser p</tt></div>
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<li><div class="single">Inputs:<ul><li><span><tt>p</tt>, <span>a <a href="../../Macaulay2Doc/html/___Symbol.html">symbol</a></span></span></li>
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<li><div class="single">Outputs:<ul><li><span><span>a <a href="___Parser.html">parser</a></span>, a parser that will pass its input to the value of the symbol <tt>p</tt> at that time</span></li>
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<div class="single"><h2>Description</h2>
<div><p>This function makes recursive parsers possible.</p>
<table class="examples"><tr><td><pre>i1 : p = futureParser q
o1 = p
o1 : Parser</pre>
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<tr><td><pre>i2 : m = p : charAnalyzer
o2 = m
o2 : FunctionClosure</pre>
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<tr><td><pre>i3 : q = constParser "abc"
o3 = q
o3 : Parser</pre>
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<tr><td><pre>i4 : m "abc"
o4 = abc</pre>
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<div class="waystouse"><div class="single"><h2>Code</h2>
<pre>../Parsing.m2:62:29-62:75: --source code:
futureParser = parserSymbol -> new Parser from (c -> (value parserSymbol) c)</pre>
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