<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>waflib.Tools.flex — Waf 1.7.11 documentation</title> <link rel="stylesheet" href="../../../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../../../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../../', VERSION: '1.7.11', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../../../_static/jquery.js"></script> <script type="text/javascript" src="../../../_static/underscore.js"></script> <script type="text/javascript" src="../../../_static/doctools.js"></script> <link rel="author" title="About these documents" href="../../../about.html" /> <link rel="copyright" title="Copyright" href="../../../copyright.html" /> <link rel="top" title="Waf 1.7.11 documentation" href="../../../index.html" /> <link rel="up" title="Module code" href="../../index.html" /> </head> <body> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../../../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li><a href="../../../index.html">Waf 1.7.11 documentation</a> »</li> <li><a href="../../index.html" accesskey="U">Module code</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <h1>Source code for waflib.Tools.flex</h1><div class="highlight"><pre> <span class="c">#!/usr/bin/env python</span> <span class="c"># encoding: utf-8</span> <span class="c"># John O'Meara, 2006</span> <span class="c"># Thomas Nagy, 2006-2010 (ita)</span> <span class="sd">"""</span> <span class="sd">The **flex** program is a code generator which creates C or C++ files.</span> <span class="sd">The generated files are compiled into object files.</span> <span class="sd">"""</span> <span class="kn">import</span> <span class="nn">waflib.TaskGen</span><span class="o">,</span> <span class="nn">os</span><span class="o">,</span> <span class="nn">re</span> <span class="k">def</span> <span class="nf">decide_ext</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">node</span><span class="p">):</span> <span class="k">if</span> <span class="s">'cxx'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">features</span><span class="p">:</span> <span class="k">return</span> <span class="p">[</span><span class="s">'.lex.cc'</span><span class="p">]</span> <span class="k">return</span> <span class="p">[</span><span class="s">'.lex.c'</span><span class="p">]</span> <span class="k">def</span> <span class="nf">flexfun</span><span class="p">(</span><span class="n">tsk</span><span class="p">):</span> <span class="n">env</span> <span class="o">=</span> <span class="n">tsk</span><span class="o">.</span><span class="n">env</span> <span class="n">bld</span> <span class="o">=</span> <span class="n">tsk</span><span class="o">.</span><span class="n">generator</span><span class="o">.</span><span class="n">bld</span> <span class="n">wd</span> <span class="o">=</span> <span class="n">bld</span><span class="o">.</span><span class="n">variant_dir</span> <span class="k">def</span> <span class="nf">to_list</span><span class="p">(</span><span class="n">xx</span><span class="p">):</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">xx</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span> <span class="k">return</span> <span class="p">[</span><span class="n">xx</span><span class="p">]</span> <span class="k">return</span> <span class="n">xx</span> <span class="n">tsk</span><span class="o">.</span><span class="n">last_cmd</span> <span class="o">=</span> <span class="n">lst</span> <span class="o">=</span> <span class="p">[]</span> <span class="n">lst</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">to_list</span><span class="p">(</span><span class="n">env</span><span class="p">[</span><span class="s">'FLEX'</span><span class="p">]))</span> <span class="n">lst</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">to_list</span><span class="p">(</span><span class="n">env</span><span class="p">[</span><span class="s">'FLEXFLAGS'</span><span class="p">]))</span> <span class="n">inputs</span> <span class="o">=</span> <span class="p">[</span><span class="n">a</span><span class="o">.</span><span class="n">path_from</span><span class="p">(</span><span class="n">bld</span><span class="o">.</span><span class="n">bldnode</span><span class="p">)</span> <span class="k">for</span> <span class="n">a</span> <span class="ow">in</span> <span class="n">tsk</span><span class="o">.</span><span class="n">inputs</span><span class="p">]</span> <span class="k">if</span> <span class="n">env</span><span class="o">.</span><span class="n">FLEX_MSYS</span><span class="p">:</span> <span class="n">inputs</span> <span class="o">=</span> <span class="p">[</span><span class="n">x</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">sep</span><span class="p">,</span> <span class="s">'/'</span><span class="p">)</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">inputs</span><span class="p">]</span> <span class="n">lst</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">inputs</span><span class="p">)</span> <span class="n">lst</span> <span class="o">=</span> <span class="p">[</span><span class="n">x</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">lst</span> <span class="k">if</span> <span class="n">x</span><span class="p">]</span> <span class="n">txt</span> <span class="o">=</span> <span class="n">bld</span><span class="o">.</span><span class="n">cmd_and_log</span><span class="p">(</span><span class="n">lst</span><span class="p">,</span> <span class="n">cwd</span><span class="o">=</span><span class="n">wd</span><span class="p">,</span> <span class="n">env</span><span class="o">=</span><span class="n">env</span><span class="o">.</span><span class="n">env</span> <span class="ow">or</span> <span class="bp">None</span><span class="p">,</span> <span class="n">quiet</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span> <span class="n">tsk</span><span class="o">.</span><span class="n">outputs</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">txt</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">'</span><span class="se">\r\n</span><span class="s">'</span><span class="p">,</span> <span class="s">'</span><span class="se">\n</span><span class="s">'</span><span class="p">)</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">'</span><span class="se">\r</span><span class="s">'</span><span class="p">,</span> <span class="s">'</span><span class="se">\n</span><span class="s">'</span><span class="p">))</span> <span class="c"># issue #1207</span> <span class="n">waflib</span><span class="o">.</span><span class="n">TaskGen</span><span class="o">.</span><span class="n">declare_chain</span><span class="p">(</span> <span class="n">name</span> <span class="o">=</span> <span class="s">'flex'</span><span class="p">,</span> <span class="n">rule</span> <span class="o">=</span> <span class="n">flexfun</span><span class="p">,</span> <span class="c"># issue #854</span> <span class="n">ext_in</span> <span class="o">=</span> <span class="s">'.l'</span><span class="p">,</span> <span class="n">decider</span> <span class="o">=</span> <span class="n">decide_ext</span><span class="p">,</span> <span class="p">)</span> <div class="viewcode-block" id="configure"><a class="viewcode-back" href="../../../tools/flex.html#waflib.Tools.flex.configure">[docs]</a><span class="k">def</span> <span class="nf">configure</span><span class="p">(</span><span class="n">conf</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Detect the *flex* program</span> <span class="sd"> """</span> <span class="n">conf</span><span class="o">.</span><span class="n">find_program</span><span class="p">(</span><span class="s">'flex'</span><span class="p">,</span> <span class="n">var</span><span class="o">=</span><span class="s">'FLEX'</span><span class="p">)</span> <span class="n">conf</span><span class="o">.</span><span class="n">env</span><span class="o">.</span><span class="n">FLEXFLAGS</span> <span class="o">=</span> <span class="p">[</span><span class="s">'-t'</span><span class="p">]</span> <span class="k">if</span> <span class="n">re</span><span class="o">.</span><span class="n">search</span> <span class="p">(</span><span class="s">r"</span><span class="se">\\</span><span class="s">msys</span><span class="se">\\</span><span class="s">[0-9.]+</span><span class="se">\\</span><span class="s">bin</span><span class="se">\\</span><span class="s">flex.exe$"</span><span class="p">,</span> <span class="n">conf</span><span class="o">.</span><span class="n">env</span><span class="o">.</span><span class="n">FLEX</span><span class="p">):</span> <span class="c"># this is the flex shipped with MSYS</span> <span class="n">conf</span><span class="o">.</span><span class="n">env</span><span class="o">.</span><span class="n">FLEX_MSYS</span> <span class="o">=</span> <span class="bp">True</span></div> </pre></div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <div id="searchbox" style="display: none"> <h3>Quick search</h3> <form class="search" action="../../../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../../genindex.html" title="General Index" >index</a></li> <li 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