73 lines
3.2 KiB
C++
73 lines
3.2 KiB
C++
/*
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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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muParserX - A C++ math parser library with array and string support
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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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*/
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#include "mpIValReader.h"
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#include "mpTokenReader.h"
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#include <cassert>
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MUP_NAMESPACE_START
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//--------------------------------------------------------------------------------------------
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IValueReader::IValueReader()
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:m_pTokenReader(nullptr)
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{}
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//--------------------------------------------------------------------------------------------
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IValueReader::~IValueReader()
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{}
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//--------------------------------------------------------------------------------------------
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IValueReader::IValueReader(const IValueReader &ref)
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{
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m_pTokenReader = ref.m_pTokenReader;
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}
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//--------------------------------------------------------------------------------------------
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void IValueReader::SetParent(TokenReader *pTokenReader)
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{
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assert(pTokenReader);
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m_pTokenReader = pTokenReader;
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}
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//--------------------------------------------------------------------------------------------
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const IToken* IValueReader::TokenHistory(std::size_t pos) const
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{
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const TokenReader::token_buf_type &buf = m_pTokenReader->GetTokens();
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std::size_t size = buf.size();
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return (pos>=size) ? nullptr : buf[size-1-pos].Get();
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}
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}
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