100 lines
2.0 KiB
C++
100 lines
2.0 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef TOKENREADER_H
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#define TOKENREADER_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "tier0/basetypes.h"
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#ifdef _WIN32
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#pragma warning(push, 1)
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#pragma warning(disable:4701 4702 4530)
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#endif
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#undef min
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#undef max
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#include <fstream>
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#include "valve_minmax_on.h"
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#ifdef _WIN32
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#pragma warning(pop)
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#endif
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#include <assert.h>
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typedef enum
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{
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TOKENSTRINGTOOLONG = -4,
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TOKENERROR = -3,
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TOKENNONE = -2,
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TOKENEOF = -1,
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OPERATOR,
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INTEGER,
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STRING,
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IDENT
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} trtoken_t;
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#define IsToken(s1, s2) !strcmpi(s1, s2)
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#define MAX_TOKEN 128 + 1
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#define MAX_IDENT 64 + 1
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#define MAX_STRING 128 + 1
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class TokenReader : private std::ifstream
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{
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public:
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TokenReader();
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bool Open(const char *pszFilename);
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trtoken_t NextToken(char *pszStore, int nSize);
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trtoken_t NextTokenDynamic(char **ppszStore);
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void Close();
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void IgnoreTill(trtoken_t ttype, const char *pszToken);
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void Stuff(trtoken_t ttype, const char *pszToken);
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bool Expecting(trtoken_t ttype, const char *pszToken);
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const char *Error(char *error, ...);
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trtoken_t PeekTokenType(char* = NULL, int maxlen = 0);
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inline int GetErrorCount(void);
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private:
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// compiler can't generate an assignment operator since descended from std::ifstream
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inline TokenReader(TokenReader const &);
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inline int operator=(TokenReader const &);
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trtoken_t GetString(char *pszStore, int nSize);
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bool SkipWhiteSpace(void);
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int m_nLine;
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int m_nErrorCount;
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char m_szFilename[128];
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char m_szStuffed[128];
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bool m_bStuffed;
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trtoken_t m_eStuffed;
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};
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//-----------------------------------------------------------------------------
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// Purpose: Returns the total number of parsing errors since this file was opened.
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//-----------------------------------------------------------------------------
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int TokenReader::GetErrorCount(void)
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{
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return(m_nErrorCount);
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}
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#endif // TOKENREADER_H
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