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<title>Language/Preprocessor/Cpphs/RunCpphs.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-
<a name="line-2"></a>-- The main program for cpphs, a simple C pre-processor written in Haskell.
<a name="line-3"></a>
<a name="line-4"></a>-- Copyright (c) 2004 Malcolm Wallace
<a name="line-5"></a>-- This file is LGPL (relicensed from the GPL by Malcolm Wallace, October 2011).
<a name="line-6"></a>-}</span>
<a name="line-7"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Cpphs</span><span class='hs-varop'>.</span><span class='hs-conid'>RunCpphs</span> <span class='hs-layout'>(</span> <span class='hs-varid'>runCpphs</span>
<a name="line-8"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>runCpphsReturningSymTab</span>
<a name="line-9"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-10"></a>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Cpphs</span><span class='hs-varop'>.</span><span class='hs-conid'>CppIfdef</span> <span class='hs-layout'>(</span><span class='hs-varid'>cppIfdef</span><span class='hs-layout'>)</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Cpphs</span><span class='hs-varop'>.</span><span class='hs-conid'>MacroPass</span><span class='hs-layout'>(</span><span class='hs-varid'>macroPass</span><span class='hs-layout'>,</span><span class='hs-varid'>macroPassReturningSymTab</span><span class='hs-layout'>)</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Cpphs</span><span class='hs-varop'>.</span><span class='hs-conid'>Options</span> <span class='hs-layout'>(</span><span class='hs-conid'>CpphsOptions</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>BoolOptions</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-14"></a> <span class='hs-layout'>,</span><span class='hs-varid'>trailing</span><span class='hs-layout'>)</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Cpphs</span><span class='hs-varop'>.</span><span class='hs-conid'>Tokenise</span> <span class='hs-layout'>(</span><span class='hs-varid'>deWordStyle</span><span class='hs-layout'>,</span> <span class='hs-varid'>tokenise</span><span class='hs-layout'>)</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Cpphs</span><span class='hs-varop'>.</span><span class='hs-conid'>Position</span> <span class='hs-layout'>(</span><span class='hs-varid'>cleanPath</span><span class='hs-layout'>)</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Unlit</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Unlit</span> <span class='hs-layout'>(</span><span class='hs-varid'>unlit</span><span class='hs-layout'>)</span>
<a name="line-18"></a>
<a name="line-19"></a>
<a name="line-20"></a><a name="runCpphs"></a><span class='hs-definition'>runCpphs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CpphsOptions</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>String</span>
<a name="line-21"></a><span class='hs-definition'>runCpphs</span> <span class='hs-varid'>options'</span> <span class='hs-varid'>filename</span> <span class='hs-varid'>input</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-22"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>options</span><span class='hs-keyglyph'>=</span> <span class='hs-varid'>options'</span><span class='hs-layout'>{</span> <span class='hs-varid'>includes</span><span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>trailing</span> <span class='hs-str'>"\\/"</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>includes</span> <span class='hs-varid'>options'</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-23"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>bools</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>boolopts</span> <span class='hs-varid'>options</span>
<a name="line-24"></a> <span class='hs-varid'>preInc</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>preInclude</span> <span class='hs-varid'>options</span> <span class='hs-keyword'>of</span>
<a name="line-25"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>""</span>
<a name="line-26"></a> <span class='hs-varid'>is</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>concatMap</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>f</span><span class='hs-keyglyph'>-></span><span class='hs-str'>"#include \""</span><span class='hs-varop'>++</span><span class='hs-varid'>f</span><span class='hs-varop'>++</span><span class='hs-str'>"\"\n"</span><span class='hs-layout'>)</span> <span class='hs-varid'>is</span>
<a name="line-27"></a> <span class='hs-varop'>++</span> <span class='hs-str'>"#line 1 \""</span><span class='hs-varop'>++</span><span class='hs-varid'>cleanPath</span> <span class='hs-varid'>filename</span><span class='hs-varop'>++</span><span class='hs-str'>"\"\n"</span>
<a name="line-28"></a>
<a name="line-29"></a> <span class='hs-varid'>pass1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>cppIfdef</span> <span class='hs-varid'>filename</span> <span class='hs-layout'>(</span><span class='hs-varid'>defines</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>includes</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-varid'>bools</span>
<a name="line-30"></a> <span class='hs-layout'>(</span><span class='hs-varid'>preInc</span><span class='hs-varop'>++</span><span class='hs-varid'>input</span><span class='hs-layout'>)</span>
<a name="line-31"></a> <span class='hs-varid'>pass2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>macroPass</span> <span class='hs-layout'>(</span><span class='hs-varid'>defines</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-varid'>bools</span> <span class='hs-varid'>pass1</span>
<a name="line-32"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>result</span><span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>macros</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span>
<a name="line-33"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>stripC89</span> <span class='hs-varid'>bools</span> <span class='hs-varop'>||</span> <span class='hs-varid'>stripEol</span> <span class='hs-varid'>bools</span>
<a name="line-34"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>deWordStyle</span> <span class='hs-varop'>$</span>
<a name="line-35"></a> <span class='hs-varid'>tokenise</span> <span class='hs-layout'>(</span><span class='hs-varid'>stripEol</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>stripC89</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span>
<a name="line-36"></a> <span class='hs-layout'>(</span><span class='hs-varid'>ansi</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>lang</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span> <span class='hs-varid'>pass1</span>
<a name="line-37"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>unlines</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>pass1</span><span class='hs-layout'>)</span>
<a name="line-38"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>pass2</span>
<a name="line-39"></a> <span class='hs-varid'>pass3</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>literate</span> <span class='hs-varid'>bools</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Unlit</span><span class='hs-varop'>.</span><span class='hs-varid'>unlit</span> <span class='hs-varid'>filename</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>id</span>
<a name="line-40"></a>
<a name="line-41"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>pass3</span> <span class='hs-varid'>result</span><span class='hs-layout'>)</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="runCpphsReturningSymTab"></a><span class='hs-definition'>runCpphsReturningSymTab</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CpphsOptions</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-44"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-45"></a><span class='hs-definition'>runCpphsReturningSymTab</span> <span class='hs-varid'>options'</span> <span class='hs-varid'>filename</span> <span class='hs-varid'>input</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-46"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>options</span><span class='hs-keyglyph'>=</span> <span class='hs-varid'>options'</span><span class='hs-layout'>{</span> <span class='hs-varid'>includes</span><span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>trailing</span> <span class='hs-str'>"\\/"</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>includes</span> <span class='hs-varid'>options'</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-47"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>bools</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>boolopts</span> <span class='hs-varid'>options</span>
<a name="line-48"></a> <span class='hs-varid'>preInc</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>preInclude</span> <span class='hs-varid'>options</span> <span class='hs-keyword'>of</span>
<a name="line-49"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>""</span>
<a name="line-50"></a> <span class='hs-varid'>is</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>concatMap</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>f</span><span class='hs-keyglyph'>-></span><span class='hs-str'>"#include \""</span><span class='hs-varop'>++</span><span class='hs-varid'>f</span><span class='hs-varop'>++</span><span class='hs-str'>"\"\n"</span><span class='hs-layout'>)</span> <span class='hs-varid'>is</span>
<a name="line-51"></a> <span class='hs-varop'>++</span> <span class='hs-str'>"#line 1 \""</span><span class='hs-varop'>++</span><span class='hs-varid'>cleanPath</span> <span class='hs-varid'>filename</span><span class='hs-varop'>++</span><span class='hs-str'>"\"\n"</span>
<a name="line-52"></a> <span class='hs-layout'>(</span><span class='hs-varid'>pass2</span><span class='hs-layout'>,</span><span class='hs-varid'>syms</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span>
<a name="line-53"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>macros</span> <span class='hs-varid'>bools</span> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-54"></a> <span class='hs-varid'>pass1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>cppIfdef</span> <span class='hs-varid'>filename</span> <span class='hs-layout'>(</span><span class='hs-varid'>defines</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>includes</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span>
<a name="line-55"></a> <span class='hs-varid'>bools</span> <span class='hs-layout'>(</span><span class='hs-varid'>preInc</span><span class='hs-varop'>++</span><span class='hs-varid'>input</span><span class='hs-layout'>)</span>
<a name="line-56"></a> <span class='hs-varid'>macroPassReturningSymTab</span> <span class='hs-layout'>(</span><span class='hs-varid'>defines</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-varid'>bools</span> <span class='hs-varid'>pass1</span>
<a name="line-57"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-58"></a> <span class='hs-varid'>pass1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>cppIfdef</span> <span class='hs-varid'>filename</span> <span class='hs-layout'>(</span><span class='hs-varid'>defines</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>includes</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span>
<a name="line-59"></a> <span class='hs-varid'>bools</span><span class='hs-layout'>{</span><span class='hs-varid'>macros</span><span class='hs-keyglyph'>=</span><span class='hs-conid'>True</span><span class='hs-layout'>}</span> <span class='hs-layout'>(</span><span class='hs-varid'>preInc</span><span class='hs-varop'>++</span><span class='hs-varid'>input</span><span class='hs-layout'>)</span>
<a name="line-60"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>syms</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>macroPassReturningSymTab</span> <span class='hs-layout'>(</span><span class='hs-varid'>defines</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-varid'>bools</span> <span class='hs-varid'>pass1</span>
<a name="line-61"></a> <span class='hs-varid'>pass1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>cppIfdef</span> <span class='hs-varid'>filename</span> <span class='hs-layout'>(</span><span class='hs-varid'>defines</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>includes</span> <span class='hs-varid'>options</span><span class='hs-layout'>)</span>
<a name="line-62"></a> <span class='hs-varid'>bools</span> <span class='hs-layout'>(</span><span class='hs-varid'>preInc</span><span class='hs-varop'>++</span><span class='hs-varid'>input</span><span class='hs-layout'>)</span>
<a name="line-63"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>result</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>stripC89</span> <span class='hs-varid'>bools</span> <span class='hs-varop'>||</span> <span class='hs-varid'>stripEol</span> <span class='hs-varid'>bools</span>
<a name="line-64"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>deWordStyle</span> <span class='hs-varop'>$</span>
<a name="line-65"></a> <span class='hs-varid'>tokenise</span> <span class='hs-layout'>(</span><span class='hs-varid'>stripEol</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>stripC89</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span>
<a name="line-66"></a> <span class='hs-layout'>(</span><span class='hs-varid'>ansi</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>lang</span> <span class='hs-varid'>bools</span><span class='hs-layout'>)</span> <span class='hs-varid'>pass1</span>
<a name="line-67"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>init</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>pass1</span><span class='hs-layout'>)</span>
<a name="line-68"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>result</span><span class='hs-layout'>,</span><span class='hs-varid'>syms</span><span class='hs-layout'>)</span>
<a name="line-69"></a>
<a name="line-70"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>pass3</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>literate</span> <span class='hs-varid'>bools</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Unlit</span><span class='hs-varop'>.</span><span class='hs-varid'>unlit</span> <span class='hs-varid'>filename</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>id</span>
<a name="line-71"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>pass3</span> <span class='hs-varid'>pass2</span><span class='hs-layout'>,</span> <span class='hs-varid'>syms</span><span class='hs-layout'>)</span>
<a name="line-72"></a>
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