| /* |
| * Copyright 2010, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "slang_pragma_recorder.h" |
| |
| #include <string> |
| |
| #include "clang/Basic/TokenKinds.h" |
| |
| #include "clang/Lex/Preprocessor.h" |
| #include "clang/Lex/Token.h" |
| |
| namespace slang { |
| |
| bool PragmaRecorder::GetPragmaNameFromToken(const clang::Token &Token, |
| std::string &PragmaName) { |
| if (Token.isLiteral()) |
| PragmaName.assign(Token.getLiteralData(), Token.getLength()); |
| else if (Token.is(clang::tok::identifier)) |
| PragmaName.assign(Token.getIdentifierInfo()->getNameStart(), |
| Token.getIdentifierInfo()->getLength()); |
| else |
| return false; |
| return true; |
| } |
| |
| bool PragmaRecorder::GetPragmaValueFromToken(const clang::Token &Token, |
| std::string &PragmaValue) { |
| // Same as the GetPragmaName() |
| if (Token.is(clang::tok::r_paren)) |
| PragmaValue.clear(); |
| else |
| return GetPragmaNameFromToken(Token, PragmaValue); |
| return true; |
| } |
| |
| PragmaRecorder::PragmaRecorder(PragmaList *Pragmas) |
| : PragmaHandler(), |
| mPragmas(Pragmas) { |
| } |
| |
| void PragmaRecorder::HandlePragma(clang::Preprocessor &PP, |
| clang::PragmaIntroducerKind Introducer, |
| clang::Token &FirstToken) { |
| clang::Token &CurrentToken = FirstToken; |
| std::string PragmaName, PragmaValue = ""; |
| // Pragma in ACC should be a name/value pair |
| |
| if (GetPragmaNameFromToken(FirstToken, PragmaName)) { |
| // start parsing the value '(' PragmaValue ')', if we have one. |
| const clang::Token* NextToken = &PP.LookAhead(0); |
| |
| if (NextToken->is(clang::tok::l_paren)) |
| PP.LexUnexpandedToken(CurrentToken); |
| else |
| goto end_parsing_pragma_value; |
| |
| NextToken = &PP.LookAhead(0); |
| if (GetPragmaValueFromToken(*NextToken, PragmaValue)) { |
| PP.Lex(CurrentToken); |
| } else { |
| PP.LexUnexpandedToken(CurrentToken); |
| PP.Diag(NextToken->getLocation(), |
| PP.getDiagnostics().getCustomDiagID( |
| clang::DiagnosticsEngine::Error, |
| "expected value after '#pragma %0('")) << PragmaName; |
| return; |
| } |
| |
| if (!NextToken->is(clang::tok::r_paren)) { |
| NextToken = &PP.LookAhead(0); |
| if (NextToken->is(clang::tok::r_paren)) { |
| PP.LexUnexpandedToken(CurrentToken); |
| } else { |
| PP.LexUnexpandedToken(CurrentToken); |
| PP.Diag(NextToken->getLocation(), |
| PP.getDiagnostics().getCustomDiagID( |
| clang::DiagnosticsEngine::Error, |
| "missing ')' after '#pragma %0(%1'")) |
| << PragmaName << PragmaValue; |
| return; |
| } |
| } |
| } else { |
| PP.Diag(FirstToken.getLocation(), |
| PP.getDiagnostics().getCustomDiagID( |
| clang::DiagnosticsEngine::Error, |
| "no pragma name or value")); |
| return; |
| } |
| |
| end_parsing_pragma_value: |
| |
| // PragmaValue may be an empty string. |
| mPragmas->push_back(make_pair(PragmaName, PragmaValue)); |
| |
| // Inform lex to eat the token |
| PP.LexUnexpandedToken(CurrentToken); |
| } |
| |
| } // namespace slang |