forked from OSchip/llvm-project
Change KeepComments/KeepMacroComments modes to be facets of the preprocessor
state, not aspects of the language standard being parsed. llvm-svn: 39209
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ad7cdd37b3
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@ -387,11 +387,9 @@ bool PrintPPOutputPPCallbacks::AvoidConcat(const LexerToken &PrevTok,
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///
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void clang::DoPrintPreprocessedInput(unsigned MainFileID, Preprocessor &PP,
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LangOptions &Options) {
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// FIXME: should not mutate LangOptions!!
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if (EnableCommentOutput) // -C specified?
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Options.KeepComments = 1;
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if (EnableMacroCommentOutput) // -CC specified?
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Options.KeepComments = Options.KeepMacroComments = 1;
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// Inform the preprocessor whether we want it to retain comments or not, due
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// to -C or -CC.
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PP.SetCommentRetentionState(EnableCommentOutput, EnableMacroCommentOutput);
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InitOutputBuffer();
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@ -67,7 +67,7 @@ Lexer::Lexer(const SourceBuffer *File, unsigned fileid, Preprocessor &pp,
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LexingRawMode = false;
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// Default to keeping comments if requested.
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KeepCommentMode = Features.KeepComments;
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KeepCommentMode = PP.getCommentRetentionState();
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}
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/// Stringify - Convert the specified string into a C string, with surrounding
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@ -970,7 +970,7 @@ bool Lexer::LexEndOfFile(LexerToken &Result, const char *CurPtr) {
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FormTokenWithChars(Result, CurPtr);
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// Restore comment saving mode, in case it was disabled for directive.
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KeepCommentMode = Features.KeepComments;
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KeepCommentMode = PP.getCommentRetentionState();
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return true; // Have a token.
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}
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@ -1087,7 +1087,7 @@ LexNextToken:
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ParsingPreprocessorDirective = false;
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// Restore comment saving mode, in case it was disabled for directive.
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KeepCommentMode = Features.KeepComments;
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KeepCommentMode = PP.getCommentRetentionState();
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// Since we consumed a newline, we are back at the start of a line.
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IsAtStartOfLine = true;
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@ -58,7 +58,11 @@ Preprocessor::Preprocessor(Diagnostic &diags, const LangOptions &opts,
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NumFastMacroExpanded = NumTokenPaste = NumFastTokenPaste = 0;
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MaxIncludeStackDepth = 0;
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NumSkipped = 0;
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// Default to discarding comments.
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KeepComments = false;
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KeepMacroComments = false;
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// Macro expansion is enabled.
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DisableMacroExpansion = false;
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InMacroArgs = false;
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@ -686,7 +690,7 @@ MacroArgs *Preprocessor::ReadFunctionLikeMacroArgs(LexerToken &MacroName,
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return 0;
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}
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// Otherwise, continue to add the tokens to this variable argument.
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} else if (Tok.getKind() == tok::comment && !Features.KeepMacroComments) {
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} else if (Tok.getKind() == tok::comment && !KeepMacroComments) {
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// If this is a comment token in the argument list and we're just in
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// -C mode (not -CC mode), discard the comment.
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continue;
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@ -1175,7 +1179,7 @@ void Preprocessor::SkipExcludedConditionalBlock(SourceLocation IfTokenLoc,
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if (Tok.getKind() != tok::identifier) {
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CurLexer->ParsingPreprocessorDirective = false;
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// Restore comment saving mode.
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CurLexer->KeepCommentMode = Features.KeepComments;
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CurLexer->KeepCommentMode = KeepComments;
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continue;
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}
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@ -1190,7 +1194,7 @@ void Preprocessor::SkipExcludedConditionalBlock(SourceLocation IfTokenLoc,
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FirstChar != 'i' && FirstChar != 'e') {
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CurLexer->ParsingPreprocessorDirective = false;
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// Restore comment saving mode.
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CurLexer->KeepCommentMode = Features.KeepComments;
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CurLexer->KeepCommentMode = KeepComments;
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continue;
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}
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@ -1211,7 +1215,7 @@ void Preprocessor::SkipExcludedConditionalBlock(SourceLocation IfTokenLoc,
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if (IdLen >= 20) {
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CurLexer->ParsingPreprocessorDirective = false;
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// Restore comment saving mode.
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CurLexer->KeepCommentMode = Features.KeepComments;
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CurLexer->KeepCommentMode = KeepComments;
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continue;
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}
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memcpy(Directive, &DirectiveStr[0], IdLen);
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@ -1292,7 +1296,7 @@ void Preprocessor::SkipExcludedConditionalBlock(SourceLocation IfTokenLoc,
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CurLexer->ParsingPreprocessorDirective = false;
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// Restore comment saving mode.
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CurLexer->KeepCommentMode = Features.KeepComments;
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CurLexer->KeepCommentMode = KeepComments;
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}
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// Finally, if we are out of the conditional (saw an #endif or ran off the end
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@ -1710,7 +1714,7 @@ void Preprocessor::HandleDefineDirective(LexerToken &DefineTok,
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// If we are supposed to keep comments in #defines, reenable comment saving
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// mode.
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CurLexer->KeepCommentMode = Features.KeepMacroComments;
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CurLexer->KeepCommentMode = KeepMacroComments;
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// Create the new macro.
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MacroInfo *MI = new MacroInfo(MacroNameTok.getLocation());
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@ -33,13 +33,9 @@ struct LangOptions {
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unsigned ObjC1 : 1; // Objective C 1 support enabled.
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unsigned ObjC2 : 1; // Objective C 2 support enabled.
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unsigned KeepComments : 1; // Keep comments ("-C") mode.
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unsigned KeepMacroComments : 1; // Keep macro-exp comments ("-CC") mode.
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LangOptions() {
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Trigraphs = BCPLComment = DollarIdents = Digraphs = ObjC1 = ObjC2 = 0;
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C99 = Microsoft = CPlusPlus = NoExtensions = 0;
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KeepComments = KeepMacroComments = 0;
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}
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};
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@ -62,6 +62,10 @@ class Preprocessor {
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MaxAllowedIncludeStackDepth = 200
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};
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// State that is set before the preprocessor begins.
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bool KeepComments : 1;
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bool KeepMacroComments : 1;
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// State that changes while the preprocessor runs:
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bool DisableMacroExpansion : 1; // True if macro expansion is disabled.
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bool InMacroArgs : 1; // True if parsing fn macro invocation args.
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@ -125,6 +129,15 @@ public:
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IdentifierTable &getIdentifierTable() { return Identifiers; }
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/// SetCommentRetentionState - Control whether or not the preprocessor retains
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/// comments in output.
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void SetCommentRetentionState(bool KeepComments, bool KeepMacroComments) {
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this->KeepComments = KeepComments | KeepMacroComments;
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this->KeepMacroComments = KeepMacroComments;
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}
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bool getCommentRetentionState() const { return KeepComments; }
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/// isCurrentLexer - Return true if we are lexing directly from the specified
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/// lexer.
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bool isCurrentLexer(const Lexer *L) const {
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