From 0621cb2e7dfd89f558a045f145f900b62379dcc2 Mon Sep 17 00:00:00 2001
From: Alp Toker <alp@nuanti.com>
Date: Wed, 16 Jul 2014 16:48:33 +0000
Subject: Make clang's rewrite engine a core feature

The rewrite facility's footprint is small so it's not worth going to these
lengths to support disabling at configure time, particularly since key compiler
features now depend on it.

Meanwhile the Objective-C rewriters have been moved under the
ENABLE_CLANG_ARCMT umbrella for now as they're comparatively heavy and still
potentially worth excluding from lightweight builds.

Tests are now passing with any combination of feature flags. The flags
historically haven't been tested by LLVM's build servers so caveat emptor.

llvm-svn: 213171
---
 clang/lib/Rewrite/Core/TokenRewriter.cpp | 99 --------------------------------
 1 file changed, 99 deletions(-)
 delete mode 100644 clang/lib/Rewrite/Core/TokenRewriter.cpp

(limited to 'clang/lib/Rewrite/Core/TokenRewriter.cpp')

diff --git a/clang/lib/Rewrite/Core/TokenRewriter.cpp b/clang/lib/Rewrite/Core/TokenRewriter.cpp
deleted file mode 100644
index 494defdedaa..00000000000
--- a/clang/lib/Rewrite/Core/TokenRewriter.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-//===--- TokenRewriter.cpp - Token-based code rewriting interface ---------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file implements the TokenRewriter class, which is used for code
-//  transformations.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Rewrite/Core/TokenRewriter.h"
-#include "clang/Basic/SourceManager.h"
-#include "clang/Lex/Lexer.h"
-#include "clang/Lex/ScratchBuffer.h"
-using namespace clang;
-
-TokenRewriter::TokenRewriter(FileID FID, SourceManager &SM,
-                             const LangOptions &LangOpts) {
-  ScratchBuf.reset(new ScratchBuffer(SM));
-
-  // Create a lexer to lex all the tokens of the main file in raw mode.
-  const llvm::MemoryBuffer *FromFile = SM.getBuffer(FID);
-  Lexer RawLex(FID, FromFile, SM, LangOpts);
-
-  // Return all comments and whitespace as tokens.
-  RawLex.SetKeepWhitespaceMode(true);
-
-  // Lex the file, populating our datastructures.
-  Token RawTok;
-  RawLex.LexFromRawLexer(RawTok);
-  while (RawTok.isNot(tok::eof)) {
-#if 0
-    if (Tok.is(tok::raw_identifier)) {
-      // Look up the identifier info for the token.  This should use
-      // IdentifierTable directly instead of PP.
-      PP.LookUpIdentifierInfo(Tok);
-    }
-#endif
-
-    AddToken(RawTok, TokenList.end());
-    RawLex.LexFromRawLexer(RawTok);
-  }
-}
-
-TokenRewriter::~TokenRewriter() {
-}
-
-
-/// RemapIterator - Convert from token_iterator (a const iterator) to
-/// TokenRefTy (a non-const iterator).
-TokenRewriter::TokenRefTy TokenRewriter::RemapIterator(token_iterator I) {
-  if (I == token_end()) return TokenList.end();
-
-  // FIXME: This is horrible, we should use our own list or something to avoid
-  // this.
-  std::map<SourceLocation, TokenRefTy>::iterator MapIt =
-    TokenAtLoc.find(I->getLocation());
-  assert(MapIt != TokenAtLoc.end() && "iterator not in rewriter?");
-  return MapIt->second;
-}
-
-
-/// AddToken - Add the specified token into the Rewriter before the other
-/// position.
-TokenRewriter::TokenRefTy
-TokenRewriter::AddToken(const Token &T, TokenRefTy Where) {
-  Where = TokenList.insert(Where, T);
-
-  bool InsertSuccess = TokenAtLoc.insert(std::make_pair(T.getLocation(),
-                                                        Where)).second;
-  assert(InsertSuccess && "Token location already in rewriter!");
-  (void)InsertSuccess;
-  return Where;
-}
-
-
-TokenRewriter::token_iterator
-TokenRewriter::AddTokenBefore(token_iterator I, const char *Val) {
-  unsigned Len = strlen(Val);
-
-  // Plop the string into the scratch buffer, then create a token for this
-  // string.
-  Token Tok;
-  Tok.startToken();
-  const char *Spelling;
-  Tok.setLocation(ScratchBuf->getToken(Val, Len, Spelling));
-  Tok.setLength(Len);
-
-  // TODO: Form a whole lexer around this and relex the token!  For now, just
-  // set kind to tok::unknown.
-  Tok.setKind(tok::unknown);
-
-  return AddToken(Tok, RemapIterator(I));
-}
-
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