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Add ClangImporterOptions::getRemappedExtraArgs

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This commit adds a function to remap the clang arguments passed
during compilation. This is intented to be shared across the
Swift compiler and LLDB to apply path remapping for debug info
paths.
This commit is contained in:
Richard Howell
2021-09-13 13:25:16 -07:00
parent b0678ca524
commit 58d67be645
4 changed files with 107 additions and 0 deletions
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53
lib/Basic/LangOptions.cpp
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@@ -408,3 +408,56 @@ DiagnosticBehavior LangOptions::getAccessNoteFailureLimit() const {
}
llvm_unreachable("covered switch");
}
std::vector<std::string> ClangImporterOptions::getRemappedExtraArgs(
std::function<std::string(StringRef)> pathRemapCallback) const {
auto consumeIncludeOption = [](StringRef &arg, StringRef &prefix) {
static StringRef options[] = {"-I",
"-F",
"-fmodule-map-file=",
"-iquote",
"-idirafter",
"-iframeworkwithsysroot",
"-iframework",
"-iprefix",
"-iwithprefixbefore",
"-iwithprefix",
"-isystemafter",
"-isystem",
"-isysroot",
"-ivfsoverlay",
"-working-directory=",
"-working-directory"};
for (StringRef &option : options)
if (arg.consume_front(option)) {
prefix = option;
return true;
}
return false;
};
// true if the previous argument was the dash-option of an option pair
bool remap_next = false;
std::vector<std::string> args;
for (auto A : ExtraArgs) {
StringRef prefix;
StringRef arg(A);
if (remap_next) {
remap_next = false;
args.push_back(pathRemapCallback(arg));
} else if (consumeIncludeOption(arg, prefix)) {
if (arg.empty()) {
// Option pair
remap_next = true;
args.push_back(prefix.str());
} else {
// Combine prefix with remapped path value
args.push_back(prefix.str() + pathRemapCallback(arg));
}
} else {
args.push_back(A);
}
}
return args;
}