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-rw-r--r--clang/Driver/RewriteMacros.cpp184
1 files changed, 0 insertions, 184 deletions
diff --git a/clang/Driver/RewriteMacros.cpp b/clang/Driver/RewriteMacros.cpp
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index b61a13c..0000000
--- a/clang/Driver/RewriteMacros.cpp
+++ /dev/null
@@ -1,184 +0,0 @@
-//===--- RewriteMacros.cpp - Rewrite macros into their expansions ---------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This code rewrites macro invocations into their expansions. This gives you
-// a macro expanded file that retains comments and #includes.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang.h"
-#include "clang/Rewrite/Rewriter.h"
-#include "clang/Lex/Preprocessor.h"
-#include "clang/Basic/SourceManager.h"
-#include "llvm/Support/Streams.h"
-#include "llvm/System/Path.h"
-#include <fstream>
-using namespace clang;
-
-/// isSameToken - Return true if the two specified tokens start have the same
-/// content.
-static bool isSameToken(Token &RawTok, Token &PPTok) {
- if (PPTok.getKind() == RawTok.getKind())
- return true;
-
- if (PPTok.getIdentifierInfo() &&
- PPTok.getIdentifierInfo() == RawTok.getIdentifierInfo())
- return true;
-
- return false;
-}
-
-static void GetNextRawTok(Lexer &RawLex, Token &RawTok, Preprocessor &PP) {
- RawLex.LexRawToken(RawTok);
-
- // If we have an identifier with no identifier info for our raw token, look
- // up the indentifier info.
- if (RawTok.is(tok::identifier) && !RawTok.getIdentifierInfo())
- RawTok.setIdentifierInfo(PP.LookUpIdentifierInfo(RawTok));
-}
-
-/// RewriteMacrosInInput - Implement -rewrite-macros mode.
-void clang::RewriteMacrosInInput(Preprocessor &PP,const std::string &InFileName,
- const std::string &OutFileName) {
- SourceManager &SM = PP.getSourceManager();
-
- Rewriter Rewrite;
- Rewrite.setSourceMgr(SM);
- RewriteBuffer &RB = Rewrite.getEditBuffer(SM.getMainFileID());
-
- const SourceManager &SourceMgr = PP.getSourceManager();
- std::pair<const char*, const char*> File =
- SourceMgr.getBufferData(SM.getMainFileID());
-
- // Create a lexer to lex all the tokens of the main file in raw mode. Even
- // though it is in raw mode, it will not return comments.
- Lexer RawLex(SourceLocation::getFileLoc(SM.getMainFileID(), 0),
- PP.getLangOptions(), File.first, File.second);
- Token RawTok;
- GetNextRawTok(RawLex, RawTok, PP);
-
- // Get the first preprocessing token.
- PP.EnterMainSourceFile();
- Token PPTok;
- PP.Lex(PPTok);
-
- // Preprocess the input file in parallel with raw lexing the main file. Ignore
- // all tokens that are preprocessed from a file other than the main file (e.g.
- // a header). If we see tokens that are in the preprocessed file bug not the
- // lexed file, we have a macro expansion. If we see tokens in the lexed file
- // that aren't in the preprocessed view, we have macros that expand to no
- // tokens, or macro arguments etc.
- while (RawTok.isNot(tok::eof) || PPTok.isNot(tok::eof)) {
- SourceLocation PPLoc = SM.getLogicalLoc(PPTok.getLocation());
-
- // If PPTok is from a different source file, ignore it.
- if (!SM.isFromMainFile(PPLoc)) {
- PP.Lex(PPTok);
- continue;
- }
-
- // If the raw file hits a preprocessor directive, they will be extra tokens
- // in the input file, but we don't want to treat them as such... just ignore
- // them.
- if (RawTok.is(tok::hash) && RawTok.isAtStartOfLine()) {
- GetNextRawTok(RawLex, RawTok, PP);
- while (!RawTok.isAtStartOfLine() && RawTok.isNot(tok::eof))
- GetNextRawTok(RawLex, RawTok, PP);
- continue;
- }
-
- // Okay, both tokens are from the same file. Get their offsets from the
- // start of the file.
- unsigned PPOffs = SM.getFullFilePos(PPLoc);
- unsigned RawOffs = SM.getFullFilePos(RawTok.getLocation());
-
- // If the offsets are the same and the token kind is the same, ignore them.
- if (PPOffs == RawOffs && isSameToken(RawTok, PPTok)) {
- GetNextRawTok(RawLex, RawTok, PP);
- PP.Lex(PPTok);
- continue;
- }
-
- // If the PP token is farther along than the raw token, something was
- // deleted. Comment out the raw token.
- if (RawOffs <= PPOffs) {
- // Comment out a whole run of tokens instead of bracketing each one with
- // comments.
- RB.InsertTextAfter(RawOffs, "/*", 2);
- unsigned EndPos;
-
- // Switch on comment lexing. If we get a comment, we don't want to
- // include it as part of our run of tokens, because we don't want to
- // nest /* */ comments.
- RawLex.SetCommentRetentionState(true);
-
- do {
- EndPos = RawOffs+RawTok.getLength();
-
- GetNextRawTok(RawLex, RawTok, PP);
- RawOffs = SM.getFullFilePos(RawTok.getLocation());
-
- if (RawTok.is(tok::comment)) {
- RawLex.SetCommentRetentionState(false);
- // Skip past the comment.
- GetNextRawTok(RawLex, RawTok, PP);
- break;
- }
-
- } while (RawOffs <= PPOffs && !RawTok.isAtStartOfLine() &&
- (PPOffs != RawOffs || !isSameToken(RawTok, PPTok)));
-
- RawLex.SetCommentRetentionState(false);
-
- RB.InsertTextBefore(EndPos, "*/", 2);
- continue;
- }
-
- // Otherwise, there was a replacement an expansion. Insert the new token
- // in the output buffer. Insert the whole run of new tokens at once to get
- // them in the right order.
- unsigned InsertPos = PPOffs;
- std::string Expansion;
- while (PPOffs < RawOffs) {
- Expansion += ' ' + PP.getSpelling(PPTok);
- PP.Lex(PPTok);
- PPLoc = SM.getLogicalLoc(PPTok.getLocation());
- PPOffs = SM.getFullFilePos(PPLoc);
- }
- Expansion += ' ';
- RB.InsertTextBefore(InsertPos, &Expansion[0], Expansion.size());
- }
-
- // Create the output file.
- std::ostream *OutFile;
- if (OutFileName == "-") {
- OutFile = llvm::cout.stream();
- } else if (!OutFileName.empty()) {
- OutFile = new std::ofstream(OutFileName.c_str(),
- std::ios_base::binary|std::ios_base::out);
- } else if (InFileName == "-") {
- OutFile = llvm::cout.stream();
- } else {
- llvm::sys::Path Path(InFileName);
- Path.eraseSuffix();
- Path.appendSuffix("cpp");
- OutFile = new std::ofstream(Path.toString().c_str(),
- std::ios_base::binary|std::ios_base::out);
- }
-
- // Get the buffer corresponding to MainFileID. If we haven't changed it, then
- // we are done.
- if (const RewriteBuffer *RewriteBuf =
- Rewrite.getRewriteBufferFor(SM.getMainFileID())) {
- //printf("Changed:\n");
- *OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end());
- } else {
- fprintf(stderr, "No changes\n");
- }
-}