212 lines
5.2 KiB
C
212 lines
5.2 KiB
C
/*
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* Copyright 1998 Bertho A. Stultiens (BS)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __WRC_PREPROC_H
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#define __WRC_PREPROC_H
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struct pp_entry; /* forward */
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/*
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* Include logic
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* A stack of files which are already included and
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* are protected in the #ifndef/#endif way.
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*/
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typedef struct includelogicentry {
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struct includelogicentry *next;
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struct includelogicentry *prev;
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struct pp_entry *ppp; /* The define which protects the file */
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char *filename; /* The filename of the include */
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} includelogicentry_t;
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/*
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* The arguments of a macrodefinition
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*/
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typedef enum {
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arg_single,
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arg_list
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} def_arg_t;
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typedef struct marg {
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def_arg_t type; /* Normal or ... argument */
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char *arg; /* The textual argument */
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int nnl; /* Number of newlines in the text to subst */
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} marg_t;
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/*
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* The expansiontext of a macro
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*/
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typedef enum {
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exp_text, /* Simple text substitution */
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exp_concat, /* Concat (##) operator requested */
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exp_stringize, /* Stringize (#) operator requested */
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exp_subst /* Substitute argument */
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} def_exp_t;
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typedef struct mtext {
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struct mtext *next;
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struct mtext *prev;
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def_exp_t type;
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union {
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char *text;
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int argidx; /* For exp_subst and exp_stringize reference */
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} subst;
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} mtext_t;
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/*
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* The define descriptor
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*/
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typedef enum {
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def_none, /* Not-a-define; used as return value */
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def_define, /* Simple defines */
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def_macro, /* Macro defines */
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def_special /* Special expansions like __LINE__ and __FILE__ */
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} def_type_t;
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typedef struct pp_entry {
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struct pp_entry *next;
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struct pp_entry *prev;
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def_type_t type; /* Define or macro */
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char *ident; /* The key */
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marg_t **margs; /* Macro arguments array or NULL if none */
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int nargs;
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union {
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mtext_t *mtext; /* The substitution sequence or NULL if none */
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char *text;
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} subst;
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int expanding; /* Set when feeding substitution into the input */
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char *filename; /* Filename where it was defined */
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int linenumber; /* Linenumber where it was defined */
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includelogicentry_t *iep; /* Points to the include it protects */
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} pp_entry_t;
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/*
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* If logic
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*/
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#define MAXIFSTACK 64 /* If this isn't enough you should alter the source... */
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typedef enum {
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if_false,
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if_true,
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if_elif,
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if_elsefalse,
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if_elsetrue,
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if_ignore
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} if_state_t;
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/*
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* I assume that 'long long' exists in the compiler when it has a size
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* of 8 or bigger. If not, then we revert to a simple 'long' for now.
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* This should prevent most unexpected things with other compilers than
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* gcc and egcs for now.
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* In the future it should be possible to use another way, like a
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* structure, so that we can emulate the MS compiler.
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*/
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#if defined(SIZEOF_LONGLONG) && SIZEOF_LONGLONG >= 8
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typedef long long wrc_sll_t;
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typedef unsigned long long wrc_ull_t;
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#else
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typedef long wrc_sll_t;
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typedef unsigned long wrc_ull_t;
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#endif
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#define SIZE_CHAR 1
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#define SIZE_SHORT 2
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#define SIZE_INT 3
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#define SIZE_LONG 4
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#define SIZE_LONGLONG 5
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#define SIZE_MASK 0x00ff
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#define FLAG_SIGNED 0x0100
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typedef enum {
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#if 0
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cv_schar = SIZE_CHAR + FLAG_SIGNED,
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cv_uchar = SIZE_CHAR,
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cv_sshort = SIZE_SHORT + FLAG_SIGNED,
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cv_ushort = SIZE_SHORT,
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#endif
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cv_sint = SIZE_INT + FLAG_SIGNED,
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cv_uint = SIZE_INT,
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cv_slong = SIZE_LONG + FLAG_SIGNED,
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cv_ulong = SIZE_LONG,
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cv_sll = SIZE_LONGLONG + FLAG_SIGNED,
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cv_ull = SIZE_LONGLONG
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} ctype_t;
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typedef struct cval {
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ctype_t type;
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union {
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#if 0
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signed char sc; /* Explicitely signed because compilers are stupid */
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unsigned char uc;
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short ss;
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unsigned short us;
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#endif
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int si;
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unsigned int ui;
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long sl;
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unsigned long ul;
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wrc_sll_t sll;
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wrc_ull_t ull;
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} val;
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} cval_t;
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pp_entry_t *pplookup(char *ident);
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pp_entry_t *add_define(char *def, char *text);
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pp_entry_t *add_cmdline_define(char *set);
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pp_entry_t *add_special_define(char *id);
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pp_entry_t *add_macro(char *ident, marg_t *args[], int nargs, mtext_t *exp);
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void del_define(char *name);
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FILE *open_include(const char *name, int search, char **newpath);
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void add_include_path(char *path);
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void push_if(if_state_t s);
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void next_if_state(int);
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if_state_t pop_if(void);
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if_state_t if_state(void);
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int get_if_depth(void);
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/*
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* From ppl.l
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*/
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extern FILE *ppin;
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extern FILE *ppout;
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extern char *pptext;
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extern int pp_flex_debug;
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int pplex(void);
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void do_include(char *fname, int type);
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void push_ignore_state(void);
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void pop_ignore_state(void);
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extern int include_state;
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extern char *include_ppp;
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extern char *include_filename;
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extern int include_ifdepth;
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extern int seen_junk;
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extern includelogicentry_t *includelogiclist;
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/*
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* From ppy.y
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*/
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int ppparse(void);
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extern int ppdebug;
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#endif
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