Structured comment parsing, first step.

* Retain comments in the AST
* Serialize/deserialize comments
* Find comments attached to a certain Decl
* Expose raw comment text and SourceRange via libclang

llvm-svn: 158771

1 files changed, 18 insertions, 0 deletions

diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index de5816df9e3..1f961805073 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -2240,6 +2240,23 @@ void ASTWriter::WriteFileDeclIDsMap() {
   Stream.EmitRecordWithBlob(AbbrevCode, Record, data(FileSortedIDs));
 }
 
+void ASTWriter::WriteComments() {
+  Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
+  ArrayRef<RawComment> RawComments = Context->Comments.getComments();
+  RecordData Record;
+  for (ArrayRef<RawComment>::iterator I = RawComments.begin(),
+                                      E = RawComments.end();
+       I != E; ++I) {
+    Record.clear();
+    AddSourceRange(I->getSourceRange(), Record);
+    Record.push_back(I->getKind());
+    Record.push_back(I->isTrailingComment());
+    Record.push_back(I->isAlmostTrailingComment());
+    Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
+  }
+  Stream.ExitBlock();
+}
+
 //===----------------------------------------------------------------------===//
 // Global Method Pool and Selector Serialization
 //===----------------------------------------------------------------------===//
@@ -3415,6 +3432,7 @@ void ASTWriter::WriteASTCore(Sema &SemaRef, MemorizeStatCalls *StatCalls,
 
   WriteFileDeclIDsMap();
   WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot);
+  WriteComments();
   
   if (Chain) {
     // Write the mapping information describing our module dependencies and how