| /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| file Copyright.txt or https://cmake.org/licensing for details. */ |
| #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.emplace_back(cmGeneratorExpressionToken::Text, upto, c - upto); |
| } |
| } |
| |
| std::vector<cmGeneratorExpressionToken> cmGeneratorExpressionLexer::Tokenize( |
| const std::string& input) |
| { |
| std::vector<cmGeneratorExpressionToken> result; |
| |
| if (input.find('$') == std::string::npos) { |
| result.push_back(cmGeneratorExpressionToken( |
| cmGeneratorExpressionToken::Text, input.c_str(), input.size())); |
| return result; |
| } |
| |
| const char* c = input.c_str(); |
| const char* upto = c; |
| |
| for (; *c; ++c) { |
| switch (*c) { |
| case '$': |
| if (c[1] == '<') { |
| InsertText(upto, c, result); |
| result.emplace_back(cmGeneratorExpressionToken::BeginExpression, c, |
| 2); |
| upto = c + 2; |
| ++c; |
| SawBeginExpression = true; |
| } |
| break; |
| case '>': |
| InsertText(upto, c, result); |
| result.emplace_back(cmGeneratorExpressionToken::EndExpression, c, 1); |
| upto = c + 1; |
| SawGeneratorExpression = SawBeginExpression; |
| break; |
| case ':': |
| InsertText(upto, c, result); |
| result.emplace_back(cmGeneratorExpressionToken::ColonSeparator, c, 1); |
| upto = c + 1; |
| break; |
| case ',': |
| InsertText(upto, c, result); |
| result.emplace_back(cmGeneratorExpressionToken::CommaSeparator, c, 1); |
| upto = c + 1; |
| break; |
| default: |
| break; |
| } |
| } |
| InsertText(upto, c, result); |
| |
| return result; |
| } |