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move include searching logic from TGLexer to SourceMgr.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73845 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-06-21 05:06:04 +00:00
parent 8070ea3f06
commit 7ee5d5f97b
6 changed files with 40 additions and 25 deletions
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20
lib/Support/SourceMgr.cpp
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@ -25,6 +25,26 @@ SourceMgr::~SourceMgr() {
}
}
/// AddIncludeFile - Search for a file with the specified name in the current
/// directory or in one of the IncludeDirs. If no file is found, this returns
/// ~0, otherwise it returns the buffer ID of the stacked file.
unsigned SourceMgr::AddIncludeFile(const std::string &Filename,
SMLoc IncludeLoc) {
MemoryBuffer *NewBuf = MemoryBuffer::getFile(Filename.c_str());
// If the file didn't exist directly, see if it's in an include path.
for (unsigned i = 0, e = IncludeDirectories.size(); i != e && !NewBuf; ++i) {
std::string IncFile = IncludeDirectories[i] + "/" + Filename;
NewBuf = MemoryBuffer::getFile(IncFile.c_str());
}
if (NewBuf == 0) return ~0U;
return AddNewSourceBuffer(NewBuf, IncludeLoc);
}
/// FindBufferContainingLoc - Return the ID of the buffer containing the
/// specified location, returning -1 if not found.
int SourceMgr::FindBufferContainingLoc(SMLoc Loc) const {