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76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file LICENSE.rst or https://cmake.org/licensing for details. */
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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#include <cstdint>
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#include <string>
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#include <vector>
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class cmExprParserHelper
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{
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public:
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struct ParserType
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{
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std::int64_t Number;
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};
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cmExprParserHelper();
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~cmExprParserHelper();
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int ParseString(char const* str, int verb);
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int LexInput(char* buf, int maxlen);
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void Error(char const* str);
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void Warning(std::string str);
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void SetResult(std::int64_t value);
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std::int64_t GetResult() const { return this->Result; }
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char const* GetError() { return this->ErrorString.c_str(); }
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void UnexpectedChar(char c);
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std::string const& GetWarning() const { return this->WarningString; }
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std::int64_t ShL(std::int64_t l, std::int64_t r);
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std::int64_t ShR(std::int64_t l, std::int64_t r);
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std::int64_t Add(std::int64_t l, std::int64_t r);
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std::int64_t Sub(std::int64_t l, std::int64_t r);
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std::int64_t Mul(std::int64_t l, std::int64_t r);
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std::int64_t Div(std::int64_t l, std::int64_t r);
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std::int64_t Mod(std::int64_t l, std::int64_t r);
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std::int64_t Neg(std::int64_t x);
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static bool AddOverflow(long l, long r, long* p);
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static bool AddOverflow(long long l, long long r, long long* p);
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static bool SubOverflow(long l, long r, long* p);
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static bool SubOverflow(long long l, long long r, long long* p);
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static bool MulOverflow(long l, long r, long* p);
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static bool MulOverflow(long long l, long long r, long long* p);
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private:
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std::string::size_type InputBufferPos;
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std::string InputBuffer;
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std::vector<char> OutputBuffer;
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int CurrentLine;
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int Verbose;
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void Print(char const* place, char const* str);
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void SetError(std::string errorString);
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std::int64_t Result;
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char const* FileName;
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long FileLine;
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std::string ErrorString;
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std::string WarningString;
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};
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#define YYSTYPE cmExprParserHelper::ParserType
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#define YYSTYPE_IS_DECLARED
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#define YY_EXTRA_TYPE cmExprParserHelper*
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#define YY_DECL int cmExpr_yylex(YYSTYPE* yylvalp, yyscan_t yyscanner)
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