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pyparsing
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Package parserFwk ::
<a href="parserFwk.pyparsing-module.html">Module pyparsing</a> ::
Class Forward
</b></font></br>
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<!-- =========== START OF CLASS DESCRIPTION =========== -->
<h2 class="class">Type Forward</h2>
<pre class="base-tree">
<a href="__builtin__.object-class.html"><code>object</code></a> --+
|
<a href="parserFwk.pyparsing.ParserElement-class.html"><code>ParserElement</code></a> --+
|
<a href="parserFwk.pyparsing.ParseElementEnhance-class.html"><code>ParseElementEnhance</code></a> --+
|
<b>Forward</b>
</pre><br />
<hr/>
<p>Forward declaration of an expression to be defined later - used for
recursive grammars, such as algebraic infix notation. When the expression
is known, it is assigned to the Forward variable using the '<<'
operator.</p>
Note: take care when assigning to Forward to not overlook precedence
of operators. Specifically, '|' has a lower precedence than '<<',
so that:
<pre class="literalblock">
fwdExpr << a | b | c
</pre>
will actually be evaluated as:
<pre class="literalblock">
(fwdExpr << a) | b | c
</pre>
thereby leaving b and c out as parseable alternatives. It is
recommended that you explicitly group the values inserted into the
Forward:
<pre class="literalblock">
fwdExpr << (a | b | c)
</pre>
<hr/>
<!-- =========== START OF METHOD SUMMARY =========== -->
<table class="summary" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white">
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<th colspan="2">Method Summary</th></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><a name="__init__"></a><span class="summary-sig"><span class="summary-sig-name">__init__</span>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>other</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><a name="__lshift__"></a><span class="summary-sig"><span class="summary-sig-name">__lshift__</span>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>other</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><a name="__str__"></a><span class="summary-sig"><span class="summary-sig-name">__str__</span>(<span class=summary-sig-arg>self</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="parserFwk.pyparsing.Forward-class.html#leaveWhitespace" class="summary-sig-name"><code>leaveWhitespace</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Disables the skipping of whitespace before matching the characters in
the ParserElement's defined pattern.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><a name="streamline"></a><span class="summary-sig"><span class="summary-sig-name">streamline</span>(<span class=summary-sig-arg>self</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="parserFwk.pyparsing.Forward-class.html#validate" class="summary-sig-name"><code>validate</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>validateTrace</span>)</span></code>
<br />
Check defined expressions for valid structure, check for infinite
recursive definitions.</td></tr>
<tr><td colspan="2">
<b>Inherited from <a href="parserFwk.pyparsing.ParseElementEnhance-class.html"><code>ParseElementEnhance</code></a>:</b>
<a href="parserFwk.pyparsing.ParseElementEnhance-class.html#checkRecursion"><code>checkRecursion</code></a>,
<a href="parserFwk.pyparsing.ParseElementEnhance-class.html#ignore"><code>ignore</code></a>,
<a href="parserFwk.pyparsing.ParseElementEnhance-class.html#parseImpl"><code>parseImpl</code></a>
<br />
<b>Inherited from <a href="parserFwk.pyparsing.ParserElement-class.html"><code>ParserElement</code></a>:</b>
<a href="parserFwk.pyparsing.ParserElement-class.html#__add__"><code>__add__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__and__"><code>__and__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__invert__"><code>__invert__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__or__"><code>__or__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__radd__"><code>__radd__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__rand__"><code>__rand__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__repr__"><code>__repr__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__ror__"><code>__ror__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__rxor__"><code>__rxor__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#__xor__"><code>__xor__</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#copy"><code>copy</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#enablePackrat"><code>enablePackrat</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#parseFile"><code>parseFile</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#parseString"><code>parseString</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#parseWithTabs"><code>parseWithTabs</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#postParse"><code>postParse</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#preParse"><code>preParse</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#resetCache"><code>resetCache</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#scanString"><code>scanString</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#searchString"><code>searchString</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#setDebug"><code>setDebug</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#setDebugActions"><code>setDebugActions</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#setDefaultWhitespaceChars"><code>setDefaultWhitespaceChars</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#setName"><code>setName</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#setParseAction"><code>setParseAction</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#setResultsName"><code>setResultsName</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#setWhitespaceChars"><code>setWhitespaceChars</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#skipIgnorables"><code>skipIgnorables</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#suppress"><code>suppress</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#transformString"><code>transformString</code></a>,
<a href="parserFwk.pyparsing.ParserElement-class.html#tryParse"><code>tryParse</code></a>
<br />
<b>Inherited from <a href="__builtin__.object-class.html"><code>object</code></a>:</b>
<a href="__builtin__.object-class.html#__delattr__"><code>__delattr__</code></a>,
<a href="__builtin__.object-class.html#__getattribute__"><code>__getattribute__</code></a>,
<a href="__builtin__.object-class.html#__hash__"><code>__hash__</code></a>,
<a href="__builtin__.object-class.html#__new__"><code>__new__</code></a>,
<a href="__builtin__.object-class.html#__reduce__"><code>__reduce__</code></a>,
<a href="__builtin__.object-class.html#__reduce_ex__"><code>__reduce_ex__</code></a>,
<a href="__builtin__.object-class.html#__setattr__"><code>__setattr__</code></a>
</td></tr>
</table><br />
<!-- =========== START OF CLASS VARIABLE SUMMARY =========== -->
<table class="summary" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="summary">
<th colspan="2">Class Variable Summary</th></tr>
<tr><td colspan="2">
<b>Inherited from <a href="parserFwk.pyparsing.ParserElement-class.html"><code>ParserElement</code></a>:</b>
<a href="parserFwk.pyparsing.ParserElement-class.html#DEFAULT_WHITE_CHARS"><code>DEFAULT_WHITE_CHARS</code></a>
</td></tr>
</table><br />
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<th colspan="2">Instance Method Details</th></tr>
</table>
<a name="leaveWhitespace"></a>
<table width="100%" class="func-details" bgcolor="#e0e0e0"><tr><td>
<h3><span class="sig"><span class="sig-name">leaveWhitespace</span>(<span class=sig-arg>self</span>)</span>
</h3>
Disables the skipping of whitespace before matching the characters
in the ParserElement's defined pattern. This is normally only used
internally by the pyparsing module, but may be needed in some
whitespace-sensitive grammars.
<dl><dt></dt><dd>
<dl><dt><b>Overrides:</b></dt>
<dd><a href="parserFwk.pyparsing.ParseElementEnhance-class.html#leaveWhitespace"><code>parserFwk.pyparsing.ParseElementEnhance.leaveWhitespace</code></a> <i>(inherited documentation)</i>
</dd>
</dl>
</dd></dl>
</td></tr></table>
<a name="validate"></a>
<table width="100%" class="func-details" bgcolor="#e0e0e0"><tr><td>
<h3><span class="sig"><span class="sig-name">validate</span>(<span class=sig-arg>self</span>,
<span class=sig-arg>validateTrace</span>=<span class=sig-default>[]</span>)</span>
</h3>
Check defined expressions for valid structure, check for infinite
recursive definitions.
<dl><dt></dt><dd>
<dl><dt><b>Overrides:</b></dt>
<dd><a href="parserFwk.pyparsing.ParseElementEnhance-class.html#validate"><code>parserFwk.pyparsing.ParseElementEnhance.validate</code></a> <i>(inherited documentation)</i>
</dd>
</dl>
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