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<title>Text/ParserCombinators/Parsec/Expr.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Text.ParserCombinators.Parsec.Expr</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Paolo Martini 2007</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see the LICENSE file)</span>
<a name="line-6"></a><span class='hs-comment'>-- </span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : derek.a.elkins@gmail.com</span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-10"></a><span class='hs-comment'>-- </span>
<a name="line-11"></a><span class='hs-comment'>-- Parsec compatibility module</span>
<a name="line-12"></a><span class='hs-comment'>-- </span>
<a name="line-13"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Expr</span>
<a name="line-16"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>Assoc</span> <span class='hs-layout'>(</span><span class='hs-conid'>AssocNone</span><span class='hs-layout'>,</span><span class='hs-conid'>AssocLeft</span><span class='hs-layout'>,</span><span class='hs-conid'>AssocRight</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-17"></a> <span class='hs-conid'>Operator</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-18"></a> <span class='hs-conid'>OperatorTable</span><span class='hs-layout'>,</span>
<a name="line-19"></a> <span class='hs-varid'>buildExpressionParser</span>
<a name="line-20"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Expr</span><span class='hs-layout'>(</span><span class='hs-conid'>Assoc</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Expr</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>N</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span><span class='hs-layout'>(</span><span class='hs-conid'>GenParser</span><span class='hs-layout'>)</span>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Typeable</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Typeable</span> <span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Identity</span>
<a name="line-28"></a>
<a name="line-29"></a><a name="Operator"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Operator</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Infix</span> <span class='hs-layout'>(</span><span class='hs-conid'>GenParser</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>Assoc</span>
<a name="line-30"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Prefix</span> <span class='hs-layout'>(</span><span class='hs-conid'>GenParser</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-31"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Postfix</span> <span class='hs-layout'>(</span><span class='hs-conid'>GenParser</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-32"></a>
<a name="line-33"></a><a name="OperatorTable"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>OperatorTable</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Operator</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-34"></a>
<a name="line-35"></a><a name="convert"></a><span class='hs-definition'>convert</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Operator</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>N</span><span class='hs-varop'>.</span><span class='hs-conid'>Operator</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>tok</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>st</span> <span class='hs-conid'>Identity</span> <span class='hs-varid'>a</span>
<a name="line-36"></a><span class='hs-definition'>convert</span> <span class='hs-layout'>(</span><span class='hs-conid'>Infix</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>N</span><span class='hs-varop'>.</span><span class='hs-conid'>Infix</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span>
<a name="line-37"></a><span class='hs-definition'>convert</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prefix</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>N</span><span class='hs-varop'>.</span><span class='hs-conid'>Prefix</span> <span class='hs-varid'>p</span>
<a name="line-38"></a><span class='hs-definition'>convert</span> <span class='hs-layout'>(</span><span class='hs-conid'>Postfix</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>N</span><span class='hs-varop'>.</span><span class='hs-conid'>Postfix</span> <span class='hs-varid'>p</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="buildExpressionParser"></a><span class='hs-definition'>buildExpressionParser</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>OperatorTable</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span>
<a name="line-41"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span>
<a name="line-42"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-varid'>tok</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span>
<a name="line-43"></a><span class='hs-definition'>buildExpressionParser</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>N</span><span class='hs-varop'>.</span><span class='hs-varid'>buildExpressionParser</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>convert</span><span class='hs-layout'>)</span>
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