[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, 5 insertions, 1 deletions

diff --git a/clang/lib/Sema/CodeCompleteConsumer.cpp b/clang/lib/Sema/CodeCompleteConsumer.cpp
index 226257dd395..754169fe5f1 100644
--- a/clang/lib/Sema/CodeCompleteConsumer.cpp
+++ b/clang/lib/Sema/CodeCompleteConsumer.cpp
@@ -80,6 +80,7 @@ bool CodeCompletionContext::wantConstructorResults() const {
   case CCC_ObjCClassMessage:
   case CCC_ObjCInterfaceName:
   case CCC_ObjCCategoryName:
+  case CCC_IncludedFile:
     return false;
   }
 
@@ -155,6 +156,8 @@ StringRef clang::getCompletionKindString(CodeCompletionContext::Kind Kind) {
     return "ObjCInterfaceName";
   case CCKind::CCC_ObjCCategoryName:
     return "ObjCCategoryName";
+  case CCKind::CCC_IncludedFile:
+    return "IncludedFile";
   case CCKind::CCC_Recovery:
     return "Recovery";
   }
@@ -522,7 +525,8 @@ bool PrintingCodeCompleteConsumer::isResultFilteredOut(StringRef Filter,
   case CodeCompletionResult::RK_Macro:
     return !Result.Macro->getName().startswith(Filter);
   case CodeCompletionResult::RK_Pattern:
-    return !StringRef(Result.Pattern->getAsString()).startswith(Filter);
+    return !(Result.Pattern->getTypedText() &&
+             StringRef(Result.Pattern->getTypedText()).startswith(Filter));
   }
   llvm_unreachable("Unknown code completion result Kind.");
 }