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<h1>src/Parser.cpp File Reference</h1> </div>
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<div class="textblock"><code>#include "antlr/Parser.hpp"</code><br/>
<code>#include <iostream></code><br/>
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Include dependency graph for Parser.cpp:</div>
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Variables</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="Parser_8cpp.html#afa9ab209b7b8f140b372dd4119ffad47">DEBUG_PARSER</a> = false</td></tr>
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<td class="memname">bool <a class="el" href="Parser_8cpp.html#afa9ab209b7b8f140b372dd4119ffad47">DEBUG_PARSER</a> = false</td>
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<p>A generic ANTLR parser (LL(k) for k>=1) containing a bunch of utility routines useful at any lookahead depth. We distinguish between the LL(1) and LL(k) parsers because of efficiency. This may not be necessary in the near future.</p>
<p>Each parser object contains the state of the parse including a lookahead cache (the form of which is determined by the subclass), whether or not the parser is in guess mode, where tokens come from, etc...</p>
<p>During <b>guess</b> mode, the current lookahead token(s) and token type(s) cache must be saved because the token stream may not have been informed to save the token (via <code>mark</code>) before the <code>try</code> block. Guessing is started by: </p>
<ol>
<li>
saving the lookahead cache. </li>
<li>
marking the current position in the <a class="el" href="classTokenBuffer.html">TokenBuffer</a>. </li>
<li>
increasing the guessing level. </li>
</ol>
<p>After guessing, the parser state is restored by: </p>
<ol>
<li>
restoring the lookahead cache. </li>
<li>
rewinding the <a class="el" href="classTokenBuffer.html">TokenBuffer</a>. </li>
<li>
decreasing the guessing level. </li>
</ol>
<dl class="see"><dt><b>See also:</b></dt><dd>antlr.Token </dd>
<dd>
antlr.TokenBuffer </dd>
<dd>
antlr.TokenStream </dd>
<dd>
antlr.LL1Parser </dd>
<dd>
antlr.LLkParser </dd></dl>
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