Add a callback for `__has_include` and use it for dependency scanning.
This adds a preprocessor callback for the `__has_include` and
`__has_include_next` directives.
Successful checking for the presence of a header should add it to the list of
header dependencies so this overrides the callback in the dependency scanner.
Patch by Pete Cooper with some additions by me.
rdar://problem/39545636
Differential Revision: https://reviews.llvm.org/D30882
llvm-svn: 342517
diff --git a/clang/lib/Frontend/DependencyFile.cpp b/clang/lib/Frontend/DependencyFile.cpp
index a3f3479..fdccd91 100644
--- a/clang/lib/Frontend/DependencyFile.cpp
+++ b/clang/lib/Frontend/DependencyFile.cpp
@@ -200,6 +200,10 @@
const Module *Imported,
SrcMgr::CharacteristicKind FileType) override;
+ void HasInclude(SourceLocation Loc, StringRef SpelledFilename, bool IsAngled,
+ const FileEntry *File,
+ SrcMgr::CharacteristicKind FileType) override;
+
void EndOfMainFile() override {
OutputDependencyFile();
}
@@ -328,6 +332,17 @@
}
}
+void DFGImpl::HasInclude(SourceLocation Loc, StringRef SpelledFilename,
+ bool IsAngled, const FileEntry *File,
+ SrcMgr::CharacteristicKind FileType) {
+ if (!File)
+ return;
+ StringRef Filename = File->getName();
+ if (!FileMatchesDepCriteria(Filename.data(), FileType))
+ return;
+ AddFilename(llvm::sys::path::remove_leading_dotslash(Filename));
+}
+
bool DFGImpl::AddFilename(StringRef Filename) {
if (FilesSet.insert(Filename).second) {
Files.push_back(Filename);