| /*============================================================================ |
| CMake - Cross Platform Makefile Generator |
| Copyright 2012 Stephen Kelly <steveire@gmail.com> |
| |
| Distributed under the OSI-approved BSD License (the "License"); |
| see accompanying file Copyright.txt for details. |
| |
| This software is distributed WITHOUT ANY WARRANTY; without even the |
| implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| See the License for more information. |
| ============================================================================*/ |
| #include "cmGeneratorExpressionLexer.h" |
| |
| |
| //---------------------------------------------------------------------------- |
| cmGeneratorExpressionLexer::cmGeneratorExpressionLexer() |
| : SawBeginExpression(false), SawGeneratorExpression(false) |
| { |
| |
| } |
| |
| //---------------------------------------------------------------------------- |
| static void InsertText(const char *upto, const char *c, |
| std::vector<cmGeneratorExpressionToken> &result) |
| { |
| if (upto != c) |
| { |
| result.push_back(cmGeneratorExpressionToken( |
| cmGeneratorExpressionToken::Text, upto, c - upto)); |
| } |
| } |
| |
| //---------------------------------------------------------------------------- |
| std::vector<cmGeneratorExpressionToken> |
| cmGeneratorExpressionLexer::Tokenize(const std::string& input) |
| { |
| std::vector<cmGeneratorExpressionToken> result; |
| |
| const char *c = input.c_str(); |
| const char *upto = c; |
| |
| for ( ; *c; ++c) |
| { |
| switch(*c) |
| { |
| case '$': |
| if(c[1] == '<') |
| { |
| InsertText(upto, c, result); |
| result.push_back(cmGeneratorExpressionToken( |
| cmGeneratorExpressionToken::BeginExpression, c, 2)); |
| upto = c + 2; |
| ++c; |
| SawBeginExpression = true; |
| } |
| break; |
| case '>': |
| InsertText(upto, c, result); |
| result.push_back(cmGeneratorExpressionToken( |
| cmGeneratorExpressionToken::EndExpression, c, 1)); |
| upto = c + 1; |
| SawGeneratorExpression = SawBeginExpression; |
| break; |
| case ':': |
| InsertText(upto, c, result); |
| result.push_back(cmGeneratorExpressionToken( |
| cmGeneratorExpressionToken::ColonSeparator, c, 1)); |
| upto = c + 1; |
| break; |
| case ',': |
| InsertText(upto, c, result); |
| result.push_back(cmGeneratorExpressionToken( |
| cmGeneratorExpressionToken::CommaSeparator, c, 1)); |
| upto = c + 1; |
| break; |
| default: |
| break; |
| } |
| } |
| InsertText(upto, c, result); |
| |
| return result; |
| } |
