[clangd] Use identifiers in file as completion candidates when build is not ready.
Summary:
o Lex the code to get the identifiers and put them into a "symbol" index.
o Adds a new completion mode without compilation/sema into code completion workflow.
o Make IncludeInserter work even when no compile command is present, by avoiding
inserting non-verbatim headers.
Reviewers: sammccall
Reviewed By: sammccall
Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, jdoerfert, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60126
llvm-svn: 358159
diff --git a/clang-tools-extra/clangd/SourceCode.cpp b/clang-tools-extra/clangd/SourceCode.cpp
index 656ab1d..d90b04a 100644
--- a/clang-tools-extra/clangd/SourceCode.cpp
+++ b/clang-tools-extra/clangd/SourceCode.cpp
@@ -391,5 +391,29 @@
return formatReplacements(Code, std::move(*CleanReplaces), Style);
}
+llvm::StringMap<unsigned> collectIdentifiers(llvm::StringRef Content,
+ const format::FormatStyle &Style) {
+ SourceManagerForFile FileSM("dummy.cpp", Content);
+ auto &SM = FileSM.get();
+ auto FID = SM.getMainFileID();
+ Lexer Lex(FID, SM.getBuffer(FID), SM, format::getFormattingLangOpts(Style));
+ Token Tok;
+
+ llvm::StringMap<unsigned> Identifiers;
+ while (!Lex.LexFromRawLexer(Tok)) {
+ switch (Tok.getKind()) {
+ case tok::identifier:
+ ++Identifiers[Tok.getIdentifierInfo()->getName()];
+ break;
+ case tok::raw_identifier:
+ ++Identifiers[Tok.getRawIdentifier()];
+ break;
+ default:
+ continue;
+ }
+ }
+ return Identifiers;
+}
+
} // namespace clangd
} // namespace clang