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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 16:49:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 16:49:38 +0000 |
commit | bd8128271ad96c97ddaf5c86915a981ddbff86c6 (patch) | |
tree | 19fb138628afa53c660a2db82488d0b703a52fa7 /third_party/waf/waflib/extras/c_dumbpreproc.py | |
parent | Initial commit. (diff) | |
download | tdb-upstream.tar.xz tdb-upstream.zip |
Adding upstream version 1.4.10.upstream/1.4.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/waf/waflib/extras/c_dumbpreproc.py')
-rw-r--r-- | third_party/waf/waflib/extras/c_dumbpreproc.py | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/third_party/waf/waflib/extras/c_dumbpreproc.py b/third_party/waf/waflib/extras/c_dumbpreproc.py new file mode 100644 index 0000000..1fdd5c3 --- /dev/null +++ b/third_party/waf/waflib/extras/c_dumbpreproc.py @@ -0,0 +1,72 @@ +#!/usr/bin/env python +# encoding: utf-8 +# Thomas Nagy, 2006-2010 (ita) + +""" +Dumb C/C++ preprocessor for finding dependencies + +It will look at all include files it can find after removing the comments, so the following +will always add the dependency on both "a.h" and "b.h":: + + #include "a.h" + #ifdef B + #include "b.h" + #endif + int main() { + return 0; + } + +To use:: + + def configure(conf): + conf.load('compiler_c') + conf.load('c_dumbpreproc') +""" + +import re +from waflib.Tools import c_preproc + +re_inc = re.compile( + '^[ \t]*(#|%:)[ \t]*(include)[ \t]*[<"](.*)[>"]\r*$', + re.IGNORECASE | re.MULTILINE) + +def lines_includes(node): + code = node.read() + if c_preproc.use_trigraphs: + for (a, b) in c_preproc.trig_def: + code = code.split(a).join(b) + code = c_preproc.re_nl.sub('', code) + code = c_preproc.re_cpp.sub(c_preproc.repl, code) + return [(m.group(2), m.group(3)) for m in re.finditer(re_inc, code)] + +parser = c_preproc.c_parser +class dumb_parser(parser): + def addlines(self, node): + if node in self.nodes[:-1]: + return + self.currentnode_stack.append(node.parent) + + # Avoid reading the same files again + try: + lines = self.parse_cache[node] + except KeyError: + lines = self.parse_cache[node] = lines_includes(node) + + self.lines = lines + [(c_preproc.POPFILE, '')] + self.lines + + def start(self, node, env): + try: + self.parse_cache = node.ctx.parse_cache + except AttributeError: + self.parse_cache = node.ctx.parse_cache = {} + + self.addlines(node) + while self.lines: + (x, y) = self.lines.pop(0) + if x == c_preproc.POPFILE: + self.currentnode_stack.pop() + continue + self.tryfind(y, env=env) + +c_preproc.c_parser = dumb_parser + |