139 lines
5.1 KiB
C++
139 lines
5.1 KiB
C++
/** \file
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\brief Definition of classes that interpret values in a string.
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<pre>
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__________ ____ ___
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_____ __ _\______ \_____ _______ ______ __________\ \/ /
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/ \| | \ ___/\__ \\_ __ \/ ___// __ \_ __ \ /
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| Y Y \ | / | / __ \| | \/\___ \\ ___/| | \/ \
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|__|_| /____/|____| (____ /__| /____ >\___ >__| /___/\ \
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\/ \/ \/ \/ \_/
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Copyright (C) 2016, Ingo Berg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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</pre>
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*/
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#ifndef MU_PARSER_IMPL_READER_H
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#define MU_PARSER_IMPL_READER_H
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#include "mpIValReader.h"
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MUP_NAMESPACE_START
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//------------------------------------------------------------------------------
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//
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// Reader for floating point values
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//
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//------------------------------------------------------------------------------
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/** \brief A class for reading floating point values from an expression string.
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\ingroup valreader
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*/
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class DblValReader : public IValueReader
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{
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public:
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DblValReader();
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virtual ~DblValReader();
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virtual bool IsValue(const char_type *a_szExpr, int &a_iPos, Value &a_fVal) override;
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virtual IValueReader* Clone(TokenReader *pTokenReader) const override;
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};
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//------------------------------------------------------------------------------
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//
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// Reader for boolean values
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//
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//------------------------------------------------------------------------------
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/** \brief A class for reading boolean values from an expression string.
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\ingroup valreader
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*/
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class BoolValReader : public IValueReader
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{
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public:
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BoolValReader();
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virtual ~BoolValReader();
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virtual bool IsValue(const char_type *a_szExpr, int &a_iPos, Value &a_fVal) override;
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virtual IValueReader* Clone(TokenReader *pTokenReader) const override;
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};
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//------------------------------------------------------------------------------
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//
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// Reader for hex values
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//
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//------------------------------------------------------------------------------
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/** \brief A class for reading hex values from an expression string.
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\ingroup valreader
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*/
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class HexValReader : public IValueReader
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{
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public:
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HexValReader();
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virtual bool IsValue(const char_type *a_szExpr, int &a_iPos, Value &a_fVal) override;
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virtual IValueReader* Clone(TokenReader *pTokenReader) const override;
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};
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//------------------------------------------------------------------------------
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//
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// Reader for binary values
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//
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//------------------------------------------------------------------------------
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/** \brief A class for reading binary values from an expression string.
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\ingroup valreader
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*/
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class BinValReader : public IValueReader
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{
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public:
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BinValReader();
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virtual ~BinValReader();
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virtual bool IsValue(const char_type *a_szExpr, int &a_iPos, Value &a_fVal) override;
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virtual IValueReader* Clone(TokenReader *pTokenReader) const override;
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};
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//------------------------------------------------------------------------------
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//
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// Reader for string values
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//
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//------------------------------------------------------------------------------
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/** \brief A class for reading strings from an expression string.
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\ingroup valreader
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*/
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class StrValReader : public IValueReader
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{
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public:
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StrValReader();
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virtual ~StrValReader();
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virtual bool IsValue(const char_type *a_szExpr, int &a_iPos, Value &a_fVal) override;
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virtual IValueReader* Clone(TokenReader *pTokenReader) const override;
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private:
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string_type Unescape(const char_type *szExpr, int &len);
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};
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MUP_NAMESPACE_END
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#endif
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