src/OpenGL ES 2.0/compiler/preprocessor/scanner.h

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//
// scanner.h
//

#if !defined(__SCANNER_H)
#define __SCANNER_H 1

// These lengths do not include the NULL terminator.
#define MAX_SYMBOL_NAME_LEN 256
#define MAX_STRING_LEN 511

#include "compiler/preprocessor/parser.h"

// Not really atom table stuff but needed first...

typedef struct SourceLoc_Rec {
    unsigned short file, line;
} SourceLoc;

int yylex_CPP(char* buf, int maxSize);

typedef struct InputSrc {
    struct InputSrc	*prev;
    int			(*scan)(struct InputSrc *, yystypepp *);
    int			(*getch)(struct InputSrc *, yystypepp *);
    void		(*ungetch)(struct InputSrc *, int, yystypepp *);
    int			name;  /* atom */
    int			line;
} InputSrc;

int InitScanner(CPPStruct *cpp);   // Intialise the cpp scanner. 
int ScanFromString(const char *);      // Start scanning the input from the string mentioned.
int check_EOF(int);              // check if we hit a EOF abruptly 
void CPPErrorToInfoLog(char *);   // sticking the msg,line into the Shader's.Info.log
void SetLineNumber(int);
void SetStringNumber(int);
void IncLineNumber(void);
void DecLineNumber(void);
int FreeScanner(void);                 // Free the cpp scanner
#endif // !(defined(__SCANNER_H)