| /*============================================================================ |
| CMake - Cross Platform Makefile Generator |
| Copyright 2000-2009 Kitware, Inc., Insight Software Consortium |
| |
| 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 "cmExprParserHelper.h" |
| |
| #include "cmMakefile.h" |
| #include "cmSystemTools.h" |
| |
| #include "cmExprLexer.h" |
| |
| int cmExpr_yyparse(yyscan_t yyscanner); |
| // |
| cmExprParserHelper::cmExprParserHelper() |
| { |
| this->FileLine = -1; |
| this->FileName = 0; |
| } |
| |
| cmExprParserHelper::~cmExprParserHelper() |
| { |
| this->CleanupParser(); |
| } |
| |
| int cmExprParserHelper::ParseString(const char* str, int verb) |
| { |
| if (!str) { |
| return 0; |
| } |
| // printf("Do some parsing: %s\n", str); |
| |
| this->Verbose = verb; |
| this->InputBuffer = str; |
| this->InputBufferPos = 0; |
| this->CurrentLine = 0; |
| |
| this->Result = 0; |
| |
| yyscan_t yyscanner; |
| cmExpr_yylex_init(&yyscanner); |
| cmExpr_yyset_extra(this, yyscanner); |
| int res = cmExpr_yyparse(yyscanner); |
| cmExpr_yylex_destroy(yyscanner); |
| if (res != 0) { |
| // str << "CAL_Parser returned: " << res << std::endl; |
| // std::cerr << "When parsing: [" << str << "]" << std::endl; |
| return 0; |
| } |
| |
| this->CleanupParser(); |
| |
| if (Verbose) { |
| std::cerr << "Expanding [" << str << "] produced: [" << this->Result << "]" |
| << std::endl; |
| } |
| return 1; |
| } |
| |
| void cmExprParserHelper::CleanupParser() |
| { |
| } |
| |
| int cmExprParserHelper::LexInput(char* buf, int maxlen) |
| { |
| // std::cout << "JPLexInput "; |
| // std::cout.write(buf, maxlen); |
| // std::cout << std::endl; |
| if (maxlen < 1) { |
| return 0; |
| } |
| if (this->InputBufferPos < this->InputBuffer.size()) { |
| buf[0] = this->InputBuffer[this->InputBufferPos++]; |
| if (buf[0] == '\n') { |
| this->CurrentLine++; |
| } |
| return (1); |
| } else { |
| buf[0] = '\n'; |
| return (0); |
| } |
| } |
| |
| void cmExprParserHelper::Error(const char* str) |
| { |
| unsigned long pos = static_cast<unsigned long>(this->InputBufferPos); |
| std::ostringstream ostr; |
| ostr << str << " (" << pos << ")"; |
| this->ErrorString = ostr.str(); |
| } |
| |
| void cmExprParserHelper::SetResult(int value) |
| { |
| this->Result = value; |
| } |