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72 lines
1.6 KiB
Python
72 lines
1.6 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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# Thomas Nagy, 2006-2010 (ita)
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"""
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Dumb C/C++ preprocessor for finding dependencies
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It will look at all include files it can find after removing the comments, so the following
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will always add the dependency on both "a.h" and "b.h"::
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#include "a.h"
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#ifdef B
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#include "b.h"
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#endif
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int main() {
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return 0;
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}
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To use::
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def configure(conf):
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conf.load('compiler_c')
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conf.load('c_dumbpreproc')
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"""
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import re
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from waflib.Tools import c_preproc
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re_inc = re.compile(
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'^[ \t]*(#|%:)[ \t]*(include)[ \t]*[<"](.*)[>"]\r*$',
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re.IGNORECASE | re.MULTILINE)
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def lines_includes(node):
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code = node.read()
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if c_preproc.use_trigraphs:
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for (a, b) in c_preproc.trig_def: code = code.split(a).join(b)
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code = c_preproc.re_nl.sub('', code)
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code = c_preproc.re_cpp.sub(c_preproc.repl, code)
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return [(m.group(2), m.group(3)) for m in re.finditer(re_inc, code)]
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parser = c_preproc.c_parser
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class dumb_parser(parser):
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def addlines(self, node):
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if node in self.nodes[:-1]:
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return
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self.currentnode_stack.append(node.parent)
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# Avoid reading the same files again
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try:
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lines = self.parse_cache[node]
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except KeyError:
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lines = self.parse_cache[node] = lines_includes(node)
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self.lines = lines + [(c_preproc.POPFILE, '')] + self.lines
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def start(self, node, env):
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try:
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self.parse_cache = node.ctx.parse_cache
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except AttributeError:
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self.parse_cache = node.ctx.parse_cache = {}
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self.addlines(node)
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while self.lines:
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(x, y) = self.lines.pop(0)
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if x == c_preproc.POPFILE:
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self.currentnode_stack.pop()
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continue
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self.tryfind(y)
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c_preproc.c_parser = dumb_parser
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