qse/ase/awk/awk.h

118 lines
3.3 KiB
C

/*
* $Id: awk.h,v 1.49 2006-04-16 04:31:38 bacon Exp $
*/
#ifndef _XP_AWK_AWK_H_
#define _XP_AWK_AWK_H_
#include <xp/types.h>
#include <xp/macros.h>
typedef struct xp_awk_t xp_awk_t;
typedef xp_ssize_t (*xp_awk_io_t) (
int cmd, void* arg, xp_char_t* data, xp_size_t count);
/* io function commands */
enum
{
XP_AWK_IO_OPEN,
XP_AWK_IO_CLOSE,
XP_AWK_IO_DATA
};
/* parse options */
enum
{
XP_AWK_IMPLICIT = (1 << 0), /* allow undeclared variables */
XP_AWK_EXPLICIT = (1 << 1), /* variable requires explicit declaration */
XP_AWK_UNIQUE = (1 << 2), /* a function name should not coincide to be a variable name */
XP_AWK_SHADING = (1 << 3), /* allow variable shading */
XP_AWK_SHIFT = (1 << 4), /* support shift operators */
XP_AWK_HASHSIGN = (1 << 5) /* support comments by a hash sign */
};
/* run options */
enum
{
XP_AWK_RUNMAIN = (1 << 0) /* execution starts from main */
};
/* error code */
enum
{
XP_AWK_ENOERR, /* no error */
XP_AWK_ENOMEM, /* out of memory */
XP_AWK_ESRCOP,
XP_AWK_ESRCCL,
XP_AWK_ESRCDT, /* error in reading source */
XP_AWK_ELXCHR, /* lexer came accross an wrong character */
XP_AWK_ELXUNG, /* lexer failed to unget a character */
XP_AWK_EENDSRC, /* unexpected end of source */
XP_AWK_EENDSTR, /* unexpected end of a string */
XP_AWK_ELBRACE, /* left brace expected */
XP_AWK_ELPAREN, /* left parenthesis expected */
XP_AWK_ERPAREN, /* right parenthesis expected */
XP_AWK_ERBRACK, /* right bracket expected */
XP_AWK_ECOMMA, /* comma expected */
XP_AWK_ESEMICOLON, /* semicolon expected */
XP_AWK_ECOLON, /* colon expected */
XP_AWK_EEXPRESSION, /* expression expected */
XP_AWK_EWHILE, /* keyword 'while' is expected */
XP_AWK_EASSIGNMENT, /* assignment statement expected */
XP_AWK_EIDENT, /* identifier expected */
XP_AWK_EDUPBEGIN, /* duplicate BEGIN */
XP_AWK_EDUPEND, /* duplicate END */
XP_AWK_EDUPFUNC, /* duplicate function name */
XP_AWK_EDUPPARAM, /* duplicate parameter name */
XP_AWK_EDUPVAR, /* duplicate variable name */
XP_AWK_EDUPNAME, /* duplicate name - function, variable, etc */
XP_AWK_EUNDEF, /* undefined identifier */
XP_AWK_ELVALUE, /* l-value required */
/* run time error */
XP_AWK_EDIVBYZERO, /* divide by zero */
XP_AWK_EOPERAND, /* invalid operand */
XP_AWK_ENOSUCHFUNC, /* no such function */
XP_AWK_EINTERNAL /* internal error */
};
#ifdef __cplusplus
extern "C" {
#endif
xp_awk_t* xp_awk_open (void);
int xp_awk_close (xp_awk_t* awk);
int xp_awk_geterrnum (xp_awk_t* awk);
const xp_char_t* xp_awk_geterrstr (xp_awk_t* awk);
void xp_awk_clear (xp_awk_t* awk);
void xp_awk_setparseopt (xp_awk_t* awk, int opt);
void xp_awk_setrunopt (xp_awk_t* awk, int opt);
int xp_awk_attsrc (xp_awk_t* awk, xp_awk_io_t src, void* arg);
int xp_awk_detsrc (xp_awk_t* awk);
int xp_awk_attin (xp_awk_t* awk, xp_awk_io_t in, void* arg);
int xp_awk_detin (xp_awk_t* awk);
int xp_awk_attout (xp_awk_t* awk, xp_awk_io_t out, void* arg);
int xp_awk_detout (xp_awk_t* awk);
int xp_awk_parse (xp_awk_t* awk);
int xp_awk_run (xp_awk_t* awk);
/* utility functions exported by awk.h */
xp_long_t xp_awk_strtolong (
const xp_char_t* str, int base, const xp_char_t** endptr);
xp_real_t xp_awk_strtoreal (const xp_char_t* str);
#ifdef __cplusplus
}
#endif
#endif