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