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#ifndef SCANNER_H
#define SCANNER_H
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* constants and errors returned by the scanner */
enum
{
SCANNER_EOF = -1, /* returned by get_char_t and
scanner_get_token to symbolize EOF */
E_TOO_MANY_INDENTS = -100, /* too many indents */
E_DEDENT_MISMATCH, /* no matching indent */
E_BAD_CONTINUATION, /* character occurred after \ */
E_BAD_NUMBER, /* parse error in a number */
E_UNKNOWN_TOKEN, /* dunno what we found */
E_UNTERM_STRING /* unterminated string constant */
};
typedef int (*get_char_t)(void *user_ctx);
void *scanner_begin(get_char_t getfunc, void *user_ctx);
int scanner_get_token(void *ctx);
void scanner_identifier(void *ctx, const char **ident, int *len);
void scanner_token_range(void *ctx, int *start, int *end);
void scanner_token_linecol(void *ctx,
int *sline, int *scol, int *eline, int *ecol);
void scanner_end(void *ctx);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* SCANNER_H */
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