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