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awk.h
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awk.h
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/*
* awk.h -- Definitions for gawk.
*/
/*
* Copyright (C) 1986, 1988, 1989, 1991-2018 the Free Software Foundation, Inc.
*
* This file is part of GAWK, the GNU implementation of the
* AWK Programming Language.
*
* GAWK is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GAWK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* ------------------------------ Includes ------------------------------ */
/*
* config.h absolutely, positively, *M*U*S*T* be included before
* any system headers. Otherwise, extreme death, destruction
* and loss of life results.
*/
#if defined(_TANDEM_SOURCE)
/*
* config.h forces this even on non-tandem systems but it
* causes problems elsewhere if used in the check below.
* so workaround it. bleah.
*/
#define tandem_for_real 1
#endif
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#if defined(tandem_for_real) && ! defined(_SCO_DS)
#define _XOPEN_SOURCE_EXTENDED 1
#endif
#include <stdio.h>
#include <assert.h>
#include <limits.h>
#include <ctype.h>
#include <setjmp.h>
#include "gettext.h"
#define _(msgid) gettext(msgid)
#define N_(msgid) msgid
#if ! (defined(HAVE_LIBINTL_H) && defined(ENABLE_NLS) && ENABLE_NLS > 0)
#ifndef LOCALEDIR
#define LOCALEDIR NULL
#endif /* LOCALEDIR */
#endif
#if !defined(__SUNPRO_C)
#if !defined(__STDC__) || __STDC__ < 1
#error "gawk no longer supports non-C89 environments (no __STDC__ or __STDC__ < 1)"
#endif
#endif
#include <stdarg.h>
#include <stdbool.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
#if ! defined(errno)
extern int errno;
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#endif /* not STDC_HEADERS */
/* We can handle multibyte strings. */
#include <wchar.h>
#include <wctype.h>
#include "mbsupport.h" /* defines stuff for DJGPP to fake MBS */
#ifdef STDC_HEADERS
#include <float.h>
#endif
#undef CHARBITS
#undef INTBITS
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#if HAVE_STDINT_H
# include <stdint.h>
#endif
/* ----------------- System dependencies (with more includes) -----------*/
/* This section is the messiest one in the file, not a lot that can be done */
#ifndef VMS
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#else /* VMS */
#include <stddef.h>
#include <stat.h>
#include <file.h> /* avoid <fcntl.h> in io.c */
/* debug.c needs this; when _DECC_V4_SOURCE is defined (as it is
in our config.h [vms/vms-conf.h]), off_t won't get declared */
# if !defined(__OFF_T) && !defined(_OFF_T)
# if defined(____OFF_T) || defined(___OFF_T)
typedef __off_t off_t; /* __off_t is either int or __int64 */
# else
typedef int off_t;
# endif
# endif
#endif /* VMS */
#include "protos.h"
#ifdef HAVE_STRING_H
#include <string.h>
#ifdef NEED_MEMORY_H
#include <memory.h>
#endif /* NEED_MEMORY_H */
#endif /* HAVE_STRING_H */
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif /* HAVE_STRINGS_H */
#if HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#ifdef VMS
#include <unixlib.h>
#include "vms/redirect.h"
#endif /*VMS*/
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifndef HAVE_SETLOCALE
#define setlocale(locale, val) /* nothing */
#endif /* HAVE_SETLOCALE */
#if HAVE_MEMCPY_ULONG
extern char *memcpy_ulong(char *dest, const char *src, unsigned long l);
#define memcpy memcpy_ulong
#endif
#if HAVE_MEMSET_ULONG
extern void *memset_ulong(void *dest, int val, unsigned long l);
#define memset memset_ulong
#endif
#ifdef HAVE_FWRITE_UNLOCKED
#define fwrite fwrite_unlocked
#endif /* HAVE_FWRITE_UNLOCKED */
#if defined(__DJGPP__) || defined(__EMX__) || defined(__MINGW32__)
#include "nonposix.h"
#endif /* defined(__DJGPP__) || defined(__EMX__) || defined(__MINGW32__) */
/* use this as lintwarn("...")
this is a hack but it gives us the right semantics */
#define lintwarn (*(set_loc(__FILE__, __LINE__),lintfunc))
/* same thing for warning */
#define warning (*(set_loc(__FILE__, __LINE__),r_warning))
#ifdef HAVE_MPFR
#include <gmp.h>
#include <mpfr.h>
#ifndef MPFR_RNDN
/* for compatibility with MPFR 2.X */
#define MPFR_RNDN GMP_RNDN
#define MPFR_RNDZ GMP_RNDZ
#define MPFR_RNDU GMP_RNDU
#define MPFR_RNDD GMP_RNDD
#endif
#endif
#include "regex.h"
#include "dfa.h"
typedef struct Regexp {
struct re_pattern_buffer pat;
struct re_registers regs;
struct dfa *dfareg;
bool has_meta; /* re has meta chars so (probably) isn't simple string */
bool maybe_long; /* re has meta chars that can match long text */
} Regexp;
#define RESTART(rp,s) (rp)->regs.start[0]
#define REEND(rp,s) (rp)->regs.end[0]
#define SUBPATSTART(rp,s,n) (rp)->regs.start[n]
#define SUBPATEND(rp,s,n) (rp)->regs.end[n]
#define NUMSUBPATS(rp,s) (rp)->regs.num_regs
/* regexp matching flags: */
#define RE_NO_FLAGS 0 /* empty flags */
#define RE_NEED_START 1 /* need to know start/end of match */
#define RE_NO_BOL 2 /* not allowed to match ^ in regexp */
#include "gawkapi.h"
/* Stuff for losing systems. */
#if !defined(HAVE_STRTOD)
extern double gawk_strtod();
#define strtod gawk_strtod
#endif
#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
# define __attribute__(x)
#endif
#ifndef ATTRIBUTE_UNUSED
#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
#endif /* ATTRIBUTE_UNUSED */
#ifndef ATTRIBUTE_NORETURN
#define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
#endif /* ATTRIBUTE_NORETURN */
#ifndef ATTRIBUTE_PRINTF
#define ATTRIBUTE_PRINTF(m, n) __attribute__ ((__format__ (__printf__, m, n)))
#define ATTRIBUTE_PRINTF_1 ATTRIBUTE_PRINTF(1, 2)
#define ATTRIBUTE_PRINTF_2 ATTRIBUTE_PRINTF(2, 3)
#endif /* ATTRIBUTE_PRINTF */
/* ------------------ Constants, Structures, Typedefs ------------------ */
#define AWKNUM double
enum defrule { BEGIN = 1, Rule, END, BEGINFILE, ENDFILE,
MAXRULE /* sentinel, not legal */ };
extern const char *const ruletab[];
typedef enum nodevals {
/* illegal entry == 0 */
Node_illegal,
Node_val, /* node is a value - type in flags */
Node_regex, /* a regexp, text, compiled, flags, etc */
Node_dynregex, /* a dynamic regexp */
/* symbol table values */
Node_var, /* scalar variable, lnode is value */
Node_var_array, /* array is ptr to elements, table_size num of eles */
Node_var_new, /* newly created variable, may become an array */
Node_param_list, /* lnode is a variable, rnode is more list */
Node_func, /* lnode is param. list, rnode is body */
Node_ext_func, /* extension function, code_ptr is builtin code */
Node_builtin_func, /* built-in function, main use is for FUNCTAB */
Node_array_ref, /* array passed by ref as parameter */
Node_array_tree, /* Hashed array tree (HAT) */
Node_array_leaf, /* Linear 1-D array */
Node_dump_array, /* array info */
/* program execution -- stack item types */
Node_arrayfor,
Node_frame,
Node_instruction,
Node_final /* sentry value, not legal */
} NODETYPE;
struct exp_node;
typedef union bucket_item {
struct {
union bucket_item *next;
char *str;
size_t len;
size_t code;
struct exp_node *name;
struct exp_node *val;
} hs;
struct {
union bucket_item *next;
long li[2];
struct exp_node *val[2];
size_t cnt;
} hi;
} BUCKET;
/* string hash table */
#define ahnext hs.next
#define ahname hs.name /* a string index node */
#define ahname_str hs.str /* shallow copy; = ahname->stptr */
#define ahname_len hs.len /* = ahname->stlen */
#define ahvalue hs.val
#define ahcode hs.code
/* integer hash table */
#define ainext hi.next
#define ainum hi.li /* integer indices */
#define aivalue hi.val
#define aicount hi.cnt
struct exp_instruction;
typedef int (*Func_print)(FILE *, const char *, ...);
typedef struct exp_node **(*afunc_t)(struct exp_node *, struct exp_node *);
/*
* NOTE - this struct is a rather kludgey -- it is packed to minimize
* space usage, at the expense of cleanliness. Alter at own risk.
*/
typedef struct exp_node {
union {
struct {
union {
struct exp_node *lptr;
struct exp_instruction *li;
long ll;
afunc_t *lp;
} l;
union {
struct exp_node *rptr;
Regexp *preg[2];
struct exp_node **av;
BUCKET **bv;
void (*uptr)(void);
struct exp_instruction *iptr;
} r;
union {
struct exp_node *extra;
void (*aptr)(void);
long xl;
} x;
char *name;
size_t reserved;
struct exp_node *rn;
unsigned long cnt;
unsigned long reflags;
# define CONSTANT 1
# define FS_DFLT 2
} nodep;
struct {
#ifdef HAVE_MPFR
union {
AWKNUM fltnum;
mpfr_t mpnum;
mpz_t mpi;
} nm;
int rndmode;
#else
AWKNUM fltnum;
#endif
char *sp;
size_t slen;
long sref;
int idx;
wchar_t *wsp;
size_t wslen;
struct exp_node *typre;
} val;
} sub;
NODETYPE type;
unsigned int flags;
/* type = Node_val */
/*
* STRING and NUMBER are mutually exclusive, except for the special
* case of an uninitialized value, represented internally by
* Nnull_string. They represent the type of a value as assigned.
* Nnull_string has both STRING and NUMBER attributes, but all other
* scalar values should have precisely one of these bits set.
*
* STRCUR and NUMCUR are not mutually exclusive. They represent that
* the particular type of value is up to date. For example,
*
* a = 5 # NUMBER | NUMCUR
* b = a "" # Adds STRCUR to a, since a string value
* # is now available. But the type hasn't changed!
*
* a = "42" # STRING | STRCUR
* b = a + 0 # Adds NUMCUR to a, since numeric value
* # is now available. But the type hasn't changed!
*
* USER_INPUT is the joker. When STRING|USER_INPUT is set, it means
* "this is string data, but the user may have really wanted it to be a
* number. If we have to guess, like in a comparison, turn it into a
* number if the string is indeed numeric."
* For example, gawk -v a=42 ....
* Here, `a' gets STRING|STRCUR|USER_INPUT and then when used where
* a number is needed, it gets turned into a NUMBER and STRING
* is cleared. In that case, we leave the USER_INPUT in place, so
* the combination NUMBER|USER_INPUT means it is a strnum a.k.a. a
* "numeric string".
*
* WSTRCUR is for efficiency. If in a multibyte locale, and we
* need to do something character based (substr, length, etc.)
* we create the corresponding wide character string and store it,
* and add WSTRCUR to the flags so that we don't have to do the
* conversion more than once.
*
* The NUMINT flag may be used with a value of any type -- NUMBER,
* STRING, or STRNUM. It indicates that the string representation
* equals the result of sprintf("%ld", <numeric value>). So, for
* example, NUMINT should NOT be set if it's a strnum or string value
* where the string is " 1" or "01" or "+1" or "1.0" or "0.1E1". This
* is a hint to indicate that an integer array optimization may be
* used when this value appears as a subscript.
*
* We hope that the rest of the flags are self-explanatory. :-)
*/
# define MALLOC 0x0001 /* stptr can be free'd, i.e. not a field node pointing into a shared buffer */
# define STRING 0x0002 /* assigned as string */
# define STRCUR 0x0004 /* string value is current */
# define NUMCUR 0x0008 /* numeric value is current */
# define NUMBER 0x0010 /* assigned as number */
# define USER_INPUT 0x0020 /* user input: if NUMERIC then
* a NUMBER */
# define INTLSTR 0x0040 /* use localized version */
# define NUMINT 0x0080 /* numeric value is an integer */
# define INTIND 0x0100 /* integral value is array index;
* lazy conversion to string.
*/
# define WSTRCUR 0x0200 /* wide str value is current */
# define MPFN 0x0400 /* arbitrary-precision floating-point number */
# define MPZN 0x0800 /* arbitrary-precision integer */
# define NO_EXT_SET 0x1000 /* extension cannot set a value for this variable */
# define NULL_FIELD 0x2000 /* this is the null field */
/* type = Node_var_array */
# define ARRAYMAXED 0x4000 /* array is at max size */
# define HALFHAT 0x8000 /* half-capacity Hashed Array Tree;
* See cint_array.c */
# define XARRAY 0x10000
# define NUMCONSTSTR 0x20000 /* have string value for numeric constant */
# define REGEX 0x40000 /* this is a typed regex */
} NODE;
#define vname sub.nodep.name
#define lnode sub.nodep.l.lptr
#define rnode sub.nodep.r.rptr
/* Node_param_list */
#define param vname
#define dup_ent sub.nodep.r.rptr
/* Node_param_list, Node_func */
#define param_cnt sub.nodep.l.ll
/* Node_func */
#define fparms sub.nodep.rn
#define code_ptr sub.nodep.r.iptr
/* Node_regex, Node_dynregex */
#define re_reg sub.nodep.r.preg
#define re_flags sub.nodep.reflags
#define re_text lnode
#define re_exp sub.nodep.x.extra
#define re_cnt flags
/* Node_val */
/*
* Note that the string in stptr may not be NUL-terminated, but it is
* guaranteed to have at least one extra byte that may be temporarily set
* to '\0'. This is helpful when calling functions such as strtod that require
* a NUL-terminated argument. In particular, field values $n for n > 0 and
* n < NF will not have a NUL terminator, since they point into the $0 buffer.
* All other strings are NUL-terminated.
*/
#define stptr sub.val.sp
#define stlen sub.val.slen
#define valref sub.val.sref
#define stfmt sub.val.idx
#define strndmode sub.val.rndmode
#define wstptr sub.val.wsp
#define wstlen sub.val.wslen
#ifdef HAVE_MPFR
#define mpg_numbr sub.val.nm.mpnum
#define mpg_i sub.val.nm.mpi
#define numbr sub.val.nm.fltnum
#else
#define numbr sub.val.fltnum
#endif
#define typed_re sub.val.typre
/*
* If stfmt is set to STFMT_UNUSED, it means that the string representation
* stored in stptr is not a function of the value of CONVFMT or OFMT. That
* indicates that either the string value was explicitly assigned, or it
* was converted from a NUMBER that has an integer value. When stfmt is not
* set to STFMT_UNUSED, it is an offset into the fmt_list array of distinct
* CONVFMT and OFMT node pointers.
*/
#define STFMT_UNUSED -1
/* Node_arrayfor */
#define for_list sub.nodep.r.av
#define for_list_size sub.nodep.reflags
#define cur_idx sub.nodep.l.ll
#define for_array sub.nodep.rn
/* Node_frame: */
#define stack sub.nodep.r.av
#define func_node sub.nodep.x.extra
#define prev_frame_size sub.nodep.reflags
#define reti sub.nodep.l.li
/* Node_var: */
#define var_value lnode
#define var_update sub.nodep.r.uptr
#define var_assign sub.nodep.x.aptr
/* Node_var_array: */
#define buckets sub.nodep.r.bv
#define nodes sub.nodep.r.av
#define array_funcs sub.nodep.l.lp
#define array_base sub.nodep.l.ll
#define table_size sub.nodep.reflags
#define array_size sub.nodep.cnt
#define array_capacity sub.nodep.reserved
#define xarray sub.nodep.rn
#define parent_array sub.nodep.x.extra
#define ainit array_funcs[0]
#define ainit_ind 0
#define atypeof array_funcs[1]
#define atypeof_ind 1
#define alength array_funcs[2]
#define alength_ind 2
#define alookup array_funcs[3]
#define alookup_ind 3
#define aexists array_funcs[4]
#define aexists_ind 4
#define aclear array_funcs[5]
#define aclear_ind 5
#define aremove array_funcs[6]
#define aremove_ind 6
#define alist array_funcs[7]
#define alist_ind 7
#define acopy array_funcs[8]
#define acopy_ind 8
#define adump array_funcs[9]
#define adump_ind 9
#define astore array_funcs[10]
#define astore_ind 10
#define NUM_AFUNCS 11 /* # of entries in array_funcs */
/* Node_array_ref: */
#define orig_array lnode
#define prev_array rnode
/* Node_array_print */
#define adepth sub.nodep.l.ll
#define alevel sub.nodep.x.xl
/* Op_comment */
#define comment_type sub.val.idx
#define EOL_COMMENT 1
#define FULL_COMMENT 2
/* --------------------------------lint warning types----------------------------*/
typedef enum lintvals {
LINT_illegal,
LINT_assign_in_cond,
LINT_no_effect
} LINTTYPE;
/* --------------------------------Instruction ---------------------------------- */
typedef enum opcodeval {
Op_illegal = 0, /* illegal entry */
/* binary operators */
Op_times,
Op_times_i,
Op_quotient,
Op_quotient_i,
Op_mod,
Op_mod_i,
Op_plus,
Op_plus_i,
Op_minus,
Op_minus_i,
Op_exp,
Op_exp_i,
Op_concat,
/* line range instruction pair */
Op_line_range, /* flags for Op_cond_pair */
Op_cond_pair, /* conditional pair */
Op_subscript,
Op_sub_array,
/* unary operators */
Op_preincrement,
Op_predecrement,
Op_postincrement,
Op_postdecrement,
Op_unary_minus,
Op_unary_plus,
Op_field_spec,
/* unary relationals */
Op_not,
/* assignments */
Op_assign,
Op_store_var, /* simple variable assignment optimization */
Op_store_sub, /* array[subscript] assignment optimization */
Op_store_field, /* $n assignment optimization */
Op_assign_times,
Op_assign_quotient,
Op_assign_mod,
Op_assign_plus,
Op_assign_minus,
Op_assign_exp,
Op_assign_concat,
/* boolean binaries */
Op_and, /* a left subexpression in && */
Op_and_final, /* right subexpression of && */
Op_or,
Op_or_final,
/* binary relationals */
Op_equal,
Op_notequal,
Op_less,
Op_greater,
Op_leq,
Op_geq,
Op_match,
Op_match_rec, /* match $0 */
Op_nomatch,
Op_rule,
/* keywords */
Op_K_case,
Op_K_default,
Op_K_break,
Op_K_continue,
Op_K_print,
Op_K_print_rec,
Op_K_printf,
Op_K_next,
Op_K_exit,
Op_K_return,
Op_K_delete,
Op_K_delete_loop,
Op_K_getline_redir,
Op_K_getline,
Op_K_nextfile,
Op_builtin,
Op_sub_builtin, /* sub, gsub and gensub */
Op_ext_builtin,
Op_in_array, /* boolean test of membership in array */
/* function call instruction */
Op_func_call,
Op_indirect_func_call,
Op_push, /* scalar variable */
Op_push_arg, /* variable type (scalar or array) argument to built-in */
Op_push_arg_untyped, /* like Op_push_arg, but for typeof */
Op_push_i, /* number, string */
Op_push_re, /* regex */
Op_push_array,
Op_push_param,
Op_push_lhs,
Op_subscript_lhs,
Op_field_spec_lhs,
Op_no_op, /* jump target */
Op_pop, /* pop an item from the runtime stack */
Op_jmp,
Op_jmp_true,
Op_jmp_false,
Op_get_record,
Op_newfile,
Op_arrayfor_init,
Op_arrayfor_incr,
Op_arrayfor_final,
Op_var_update, /* update value of NR, NF or FNR */
Op_var_assign,
Op_field_assign,
Op_subscript_assign,
Op_after_beginfile,
Op_after_endfile,
Op_func,
Op_comment, /* for pretty printing */
Op_exec_count,
Op_breakpoint,
Op_lint,
Op_atexit,
Op_stop,
/* parsing (yylex and yyparse), should never appear in valid compiled code */
Op_token,
Op_symbol,
Op_list,
/* program structures -- for use in the profiler/pretty printer */
Op_K_do,
Op_K_for,
Op_K_arrayfor,
Op_K_while,
Op_K_switch,
Op_K_if,
Op_K_else,
Op_K_function,
Op_cond_exp,
Op_parens,
Op_final /* sentry value, not legal */
} OPCODE;
enum redirval {
/* I/O redirections */
redirect_none = 0,
redirect_output,
redirect_append,
redirect_pipe,
redirect_pipein,
redirect_input,
redirect_twoway
};
struct break_point;
typedef struct exp_instruction {
struct exp_instruction *nexti;
union {
NODE *dn;
struct exp_instruction *di;
NODE *(*fptr)(int);
awk_value_t *(*efptr)(int num_actual_args,
awk_value_t *result,
struct awk_ext_func *finfo);
long dl;
char *name;
} d;
union {
long xl;
NODE *xn;
void (*aptr)(void);
struct exp_instruction *xi;
struct break_point *bpt;
awk_ext_func_t *exf;
} x;
short source_line;
short pool_size; // memory management in symbol.c
OPCODE opcode;
} INSTRUCTION;
#define func_name d.name
#define memory d.dn
#define builtin d.fptr
#define extfunc d.efptr
#define builtin_idx d.dl
#define expr_count x.xl
#define c_function x.exf
#define target_continue d.di
#define target_jmp d.di
#define target_break x.xi
/* Op_sub_builtin */
#define sub_flags d.dl
#define GSUB 0x01 /* builtin is gsub */
#define GENSUB 0x02 /* builtin is gensub */
#define LITERAL 0x04 /* target is a literal string */
/* Op_K_exit */
#define target_end d.di
#define target_atexit x.xi
/* Op_newfile, Op_K_getline, Op_nextfile */
#define target_endfile x.xi
/* Op_newfile */
#define target_get_record x.xi
/* Op_get_record, Op_K_nextfile */
#define target_newfile d.di
/* Op_K_getline */
#define target_beginfile d.di
/* Op_get_record */
#define has_endfile x.xl
/* Op_token */
#define lextok d.name
#define param_count x.xl
/* Op_rule */
#define in_rule x.xl
#define source_file d.name
/* Op_K_case, Op_K_default */
#define case_stmt x.xi
#define case_exp d.di
#define stmt_start case_exp
#define stmt_end case_stmt
#define match_exp x.xl
#define target_stmt x.xi
/* Op_K_switch */
#define switch_end x.xi
#define switch_start d.di
/* Op_K_getline, Op_K_getline_redir */
#define into_var x.xl
/* Op_K_getline_redir, Op_K_print, Op_K_print_rec, Op_K_printf */
#define redir_type d.dl
/* Op_arrayfor_incr */
#define array_var x.xn
/* Op_line_range */
#define triggered x.xl
/* Op_cond_pair */
#define line_range x.xi
/* Op_func_call, Op_func */
#define func_body x.xn
/* Op_subscript */
#define sub_count d.dl
/* Op_push_lhs, Op_subscript_lhs, Op_field_spec_lhs */
#define do_reference x.xl
/* Op_list, Op_rule, Op_func */
#define lasti d.di
#define firsti x.xi
/* Op_rule, Op_func */
#define last_line x.xl
#define first_line source_line
/* Op_lint */
#define lint_type d.dl
/* Op_field_spec_lhs */
#define target_assign d.di
/* Op_var_assign */
#define assign_var x.aptr
/* Op_var_update */
#define update_var x.aptr
/* Op_field_assign */
#define field_assign x.aptr
/* Op_field_assign, Op_var_assign */
#define assign_ctxt d.dl
/* Op_concat */
#define concat_flag d.dl
#define CSUBSEP 1
#define CSVAR 2
/* Op_breakpoint */
#define break_pt x.bpt
/*------------------ pretty printing/profiling --------*/
/* Op_exec_count */
#define exec_count d.dl
/* Op_K_while */
#define while_body d.di
/* Op_K_do */
#define doloop_cond d.di
/* Op_K_for */
#define forloop_cond d.di
#define forloop_body x.xi
/* Op_K_if */
#define branch_if d.di
#define branch_else x.xi
/* Op_K_else */
#define branch_end x.xi
/* Op_line_range */
#define condpair_left d.di
#define condpair_right x.xi
/* Op_store_var */
#define initval x.xn
typedef struct iobuf {
awk_input_buf_t public; /* exposed to extensions */
char *buf; /* start data buffer */
char *off; /* start of current record in buffer */
char *dataend; /* first byte in buffer to hold new data,
NULL if not read yet */
char *end; /* end of buffer */
size_t readsize; /* set from fstat call */
size_t size; /* buffer size */
ssize_t count; /* amount read last time */
size_t scanoff; /* where we were in the buffer when we had
to regrow/refill */
bool valid;
int errcode;
int flag;
# define IOP_IS_TTY 1
# define IOP_AT_EOF 2
# define IOP_CLOSED 4
# define IOP_AT_START 8
} IOBUF;
typedef void (*Func_ptr)(void);
/* structure used to dynamically maintain a linked-list of open files/pipes */
struct redirect {
unsigned int flag;
# define RED_FILE 1
# define RED_PIPE 2
# define RED_READ 4
# define RED_WRITE 8
# define RED_APPEND 16
# define RED_NOBUF 32
# define RED_USED 64 /* closed temporarily to reuse fd */
# define RED_EOF 128
# define RED_TWOWAY 256
# define RED_PTY 512
# define RED_SOCKET 1024
# define RED_TCP 2048
char *value;
FILE *ifp; /* input fp, needed for PIPES_SIMULATED */
IOBUF *iop;
int pid;
int status;
struct redirect *prev;
struct redirect *next;
const char *mode;
awk_output_buf_t output;
};
/* values for BINMODE, used as bit flags */
enum binmode_values {
TEXT_TRANSLATE = 0, /* usual \r\n ---> \n translation */
BINMODE_INPUT = 1, /* no translation for input files */
BINMODE_OUTPUT = 2, /* no translation for output files */
BINMODE_BOTH = 3 /* no translation for either */
};
/*
* structure for our source, either a command line string or a source file.
*/
typedef struct srcfile {
struct srcfile *next;
struct srcfile *prev;
enum srctype {
SRC_CMDLINE = 1,
SRC_STDIN,
SRC_FILE,
SRC_INC,
SRC_EXTLIB
} stype;
char *src; /* name on command line or include statement */
char *fullpath; /* full path after AWKPATH search */
time_t mtime;
struct stat sbuf;
int srclines; /* no of lines in source */
size_t bufsize;
char *buf;