[CodeComplete] Add completions for filenames in #include directives.

Summary:
The dir component ("somedir" in #include <somedir/fo...>) is considered fixed.
We append "foo" to each directory on the include path, and then list its files.

Completions are of the forms:
 #include <somedir/fo^
                   foo.h>
                   fox/

The filter is set to the filename part ("fo"), so fuzzy matching can be
applied to the filename only.

No fancy scoring/priorities are set, and no information is added to
CodeCompleteResult to make smart scoring possible. Could be in future.

Reviewers: ilya-biryukov

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52076

llvm-svn: 342449

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/Parse/Parser.cpp b/clang/lib/Parse/Parser.cpp
index 1736629..34ed96fb 100644
--- a/clang/lib/Parse/Parser.cpp
+++ b/clang/lib/Parse/Parser.cpp
@@ -1967,6 +1967,10 @@ void Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro,
                                                 ArgumentIndex);
 }
 
+void Parser::CodeCompleteIncludedFile(llvm::StringRef Dir, bool IsAngled) {
+  Actions.CodeCompleteIncludedFile(Dir, IsAngled);
+}
+
 void Parser::CodeCompleteNaturalLanguage() {
   Actions.CodeCompleteNaturalLanguage();
 }