preproc.c File Reference

#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "wine/wpp.h"
#include "wpp_private.h"

Include dependency graph for preproc.c:

Go to the source code of this file.

Classes
struct	pp_def_state

Macros
#define	HASHKEY   2039
#define	MAXIFSTACK   64
#define	INCLUDESEPARATOR   ":"

Typedefs
typedef struct pp_def_state	pp_def_state_t

Functions
void *	pp_xmalloc (size_t size)
void *	pp_xrealloc (void *p, size_t size)
char *	pp_xstrdup (const char *str)
static char *	wpp_default_lookup (const char *name, int type, const char *parent_name, char **include_path, int include_path_count)
static void *	wpp_default_open (const char *filename, int type)
static void	wpp_default_close (void *file)
static int	wpp_default_read (void *file, char *buffer, unsigned int len)
static void	wpp_default_write (const char *buffer, unsigned int len)
static int	pphash (const char *str)
pp_entry_t *	pplookup (const char *ident)
static void	free_pp_entry (pp_entry_t *ppp, int idx)
int	pp_push_define_state (void)
void	pp_pop_define_state (void)
void	pp_del_define (const char *name)
pp_entry_t *	pp_add_define (const char *def, const char *text)
pp_entry_t *	pp_add_macro (char *id, marg_t *args[], int nargs, mtext_t *exp)
int	wpp_add_include_path (const char *path)
char *	wpp_find_include (const char *name, const char *parent_name)
void *	pp_open_include (const char *name, int type, const char *parent_name, char **newpath)
void	pp_push_if (pp_if_state_t s)
pp_if_state_t	pp_pop_if (void)
pp_if_state_t	pp_if_state (void)
void	pp_next_if_state (int i)
int	pp_get_if_depth (void)
static void	generic_msg (const char *s, const char *t, const char *n, va_list ap)
static void	wpp_default_error (const char *file, int line, int col, const char *near, const char *msg, va_list ap)
static void	wpp_default_warning (const char *file, int line, int col, const char *near, const char *msg, va_list ap)
int	ppy_error (const char *s,...)
int	ppy_warning (const char *s,...)
void	pp_internal_error (const char *file, int line, const char *s,...)

Variables
struct pp_status	pp_status
static pp_def_state_t *	pp_def_state
static pp_if_state_t	if_stack [MAXIFSTACK]
static int	if_stack_idx = 0
static char **	includepath
static int	nincludepath = 0
static const char *const	pp_if_state_str []
static const struct wpp_callbacks	default_callbacks
const struct wpp_callbacks *	wpp_callbacks = &default_callbacks

Macro Definition Documentation

HASHKEY

#define HASHKEY   2039

Definition at line 41 of file preproc.c.

INCLUDESEPARATOR

#define INCLUDESEPARATOR   ":"

Definition at line 454 of file preproc.c.

MAXIFSTACK

#define MAXIFSTACK   64

Definition at line 51 of file preproc.c.

Typedef Documentation

pp_def_state_t

typedef struct pp_def_state pp_def_state_t

Function Documentation

free_pp_entry()

static void free_pp_entry ( pp_entry_t *  ppp, int  idx  )

static

Definition at line 237 of file preproc.c.

{
    if(ppp->iep)
    {
        if(ppp->iep == pp_includelogiclist)
        {
            pp_includelogiclist = ppp->iep->next;
            if(pp_includelogiclist)
                pp_includelogiclist->prev = NULL;
        }
        else
        {
            ppp->iep->prev->next = ppp->iep->next;
            if(ppp->iep->next)
                ppp->iep->next->prev = ppp->iep->prev;
        }
        free(ppp->iep->filename);
        free(ppp->iep);
    }
 
    if(pp_def_state->defines[idx] == ppp)
    {
        pp_def_state->defines[idx] = ppp->next;
        if(pp_def_state->defines[idx])
            pp_def_state->defines[idx]->prev = NULL;
    }
    else
    {
        ppp->prev->next = ppp->next;
        if(ppp->next)
            ppp->next->prev = ppp->prev;
    }
 
    free(ppp);
}

generic_msg()

static void generic_msg ( const char *  s, const char *  t, const char *  n, va_list  ap  )

static

Definition at line 688 of file preproc.c.

{
    fprintf(stderr, "%s:%d:%d: %s: ", pp_status.input ? pp_status.input : "stdin",
                pp_status.line_number, pp_status.char_number, t);
    vfprintf(stderr, s, ap);
#ifdef WANT_NEAR_INDICATION
    {
        char *cpy, *p;
        if(n)
        {
            cpy = pp_xstrdup(n);
            if(!cpy)
                goto end;
            for (p = cpy; *p; p++) if(!isprint(*p)) *p = ' ';
            fprintf(stderr, " near '%s'", cpy);
            free(cpy);
        }
    }
end:
#endif
    fprintf(stderr, "\n");
}

Referenced by wpp_default_error(), and wpp_default_warning().

pp_add_define()

pp_entry_t * pp_add_define	(	const char *	def,
		const char *	text
	)

Definition at line 323 of file preproc.c.

{
    int len;
    char *cptr;
    int idx;
    pp_entry_t *ppp;
 
    if(!def)
        return NULL;
    idx = pphash(def);
    if((ppp = pplookup(def)) != NULL)
    {
        if(pp_status.pedantic)
            ppy_warning("Redefinition of %s\n\tPrevious definition: %s:%d", def, ppp->filename, ppp->linenumber);
        pp_del_define(def);
    }
    ppp = pp_xmalloc(sizeof(pp_entry_t));
    if(!ppp)
        return NULL;
    memset( ppp, 0, sizeof(*ppp) );
    ppp->ident = pp_xstrdup(def);
    if(!ppp->ident)
        goto error;
    ppp->type = def_define;
    ppp->subst.text = text ? pp_xstrdup(text) : NULL;
    if(text && !ppp->subst.text)
        goto error;
    ppp->filename = pp_xstrdup(pp_status.input ? pp_status.input : "<internal or cmdline>");
    if(!ppp->filename)
        goto error;
    ppp->linenumber = pp_status.input ? pp_status.line_number : 0;
    ppp->next = pp_def_state->defines[idx];
    pp_def_state->defines[idx] = ppp;
    if(ppp->next)
        ppp->next->prev = ppp;
    if(ppp->subst.text)
    {
        /* Strip trailing white space from subst text */
        len = strlen(ppp->subst.text);
        while(len && strchr(" \t\r\n", ppp->subst.text[len-1]))
        {
            ppp->subst.text[--len] = '\0';
        }
        /* Strip leading white space from subst text */
        for(cptr = ppp->subst.text; *cptr && strchr(" \t\r", *cptr); cptr++)
        ;
        if(ppp->subst.text != cptr)
            memmove(ppp->subst.text, cptr, strlen(cptr)+1);
    }
    if(pp_status.debug)
        printf("Added define (%s, %d) <%s> to <%s>\n", pp_status.input, pp_status.line_number, ppp->ident, ppp->subst.text ? ppp->subst.text : "(null)");
 
    return ppp;
 
error:
    free(ppp->ident);
    free(ppp->subst.text);
    free(ppp);
    return NULL;
}

pp_add_macro()

pp_entry_t * pp_add_macro	(	char *	id,
		marg_t *	args[],
		int	nargs,
		mtext_t *	exp
	)

Definition at line 384 of file preproc.c.

{
    int idx;
    pp_entry_t *ppp;
 
    if(!id)
        return NULL;
    idx = pphash(id);
    if((ppp = pplookup(id)) != NULL)
    {
        if(pp_status.pedantic)
            ppy_warning("Redefinition of %s\n\tPrevious definition: %s:%d", id, ppp->filename, ppp->linenumber);
        pp_del_define(id);
    }
    ppp = pp_xmalloc(sizeof(pp_entry_t));
    if(!ppp)
        return NULL;
    memset( ppp, 0, sizeof(*ppp) );
    ppp->ident  = id;
    ppp->type   = def_macro;
    ppp->margs  = args;
    ppp->nargs  = nargs;
    ppp->subst.mtext= exp;
    ppp->filename = pp_xstrdup(pp_status.input ? pp_status.input : "<internal or cmdline>");
    if(!ppp->filename)
    {
        free(ppp);
        return NULL;
    }
    ppp->linenumber = pp_status.input ? pp_status.line_number : 0;
    ppp->next   = pp_def_state->defines[idx];
    pp_def_state->defines[idx] = ppp;
    if(ppp->next)
        ppp->next->prev = ppp;
 
    if(pp_status.debug)
    {
        fprintf(stderr, "Added macro (%s, %d) <%s(%d)> to <", pp_status.input, pp_status.line_number, ppp->ident, nargs);
        for(; exp; exp = exp->next)
        {
            switch(exp->type)
            {
            case exp_text:
                fprintf(stderr, " \"%s\" ", exp->subst.text);
                break;
            case exp_stringize:
                fprintf(stderr, " #(%d) ", exp->subst.argidx);
                break;
            case exp_concat:
                fprintf(stderr, "##");
                break;
            case exp_subst:
                fprintf(stderr, " <%d> ", exp->subst.argidx);
                break;
            }
        }
        fprintf(stderr, ">\n");
    }
    return ppp;
}

pp_del_define()

void pp_del_define

(

const char *

name

)

Definition at line 302 of file preproc.c.

{
    pp_entry_t *ppp;
    int idx = pphash(name);
 
    if((ppp = pplookup(name)) == NULL)
    {
        if(pp_status.pedantic)
            ppy_warning("%s was not defined", name);
        return;
    }
 
    if(pp_status.debug)
        printf("Deleting (%s, %d) <%s>\n", pp_status.input, pp_status.line_number, name);
 
    free( ppp->ident );
    free( ppp->subst.text );
    free( ppp->filename );
    free_pp_entry( ppp, idx );
}

pp_get_if_depth()

int pp_get_if_depth

(

void

)

Definition at line 681 of file preproc.c.

{
    return if_stack_idx;
}

pp_if_state()

pp_if_state_t pp_if_state

(

void

)

Definition at line 653 of file preproc.c.

{
    if(!if_stack_idx)
        return if_true;
    else
        return if_stack[if_stack_idx-1];
}

pp_internal_error()

void pp_internal_error	(	const char *	file,
		int	line,
		const char *	s,
			...
	)

Definition at line 754 of file preproc.c.

{
    va_list ap;
    va_start(ap, s);
    fprintf(stderr, "Internal error (please report) %s %d: ", file, line);
    vfprintf(stderr, s, ap);
    fprintf(stderr, "\n");
    va_end(ap);
    exit(3);
}

pp_next_if_state()

void pp_next_if_state

(

int

i

)

Definition at line 662 of file preproc.c.

{
    switch(pp_if_state())
    {
    case if_true:
    case if_elsetrue:
        pp_push_if(i ? if_true : if_false);
        break;
    case if_false:
    case if_elsefalse:
    case if_elif:
    case if_ignore:
        pp_push_if(if_ignore);
        break;
    default:
        pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #{if,ifdef,ifndef} directive", (int)pp_if_state());
    }
}

pp_open_include()

void * pp_open_include	(	const char *	name,
		int	type,
		const char *	parent_name,
		char **	newpath
	)

Definition at line 514 of file preproc.c.

{
    char *path;
    void *fp;
 
    if (!(path = wpp_callbacks->lookup(name, type, parent_name, includepath,
                                       nincludepath))) return NULL;
    fp = wpp_callbacks->open(path, type);
 
    if (fp)
    {
        if (pp_status.debug)
            printf("Going to include <%s>\n", path);
        if (newpath) *newpath = path;
        else free( path );
        return fp;
    }
    free( path );
    return NULL;
}

pp_pop_define_state()

void pp_pop_define_state

(

void

)

Definition at line 287 of file preproc.c.

{
    int i;
    pp_entry_t *ppp;
    pp_def_state_t *state;
 
    for (i = 0; i < HASHKEY; i++)
    {
        while ((ppp = pp_def_state->defines[i]) != NULL) pp_del_define( ppp->ident );
    }
    state = pp_def_state;
    pp_def_state = state->next;
    free( state );
}

pp_pop_if()

pp_if_state_t pp_pop_if

(

void

)

Definition at line 618 of file preproc.c.

{
    if(if_stack_idx <= 0)
    {
        ppy_error("#{endif,else,elif} without #{if,ifdef,ifndef} (#if-stack underflow)");
        return if_error;
    }
 
    switch(pp_if_state())
    {
    case if_true:
    case if_elsetrue:
        break;
    case if_false:
    case if_elsefalse:
    case if_elif:
    case if_ignore:
        pp_pop_ignore_state();
        break;
    default:
        pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d)", (int)pp_if_state());
    }
 
    if(pp_flex_debug)
        fprintf(stderr, "Pop if %s:%d: %s(%d) -> %s(%d)\n",
                pp_status.input,
                pp_status.line_number,
                pp_if_state_str[pp_if_state()],
                if_stack_idx,
                pp_if_state_str[if_stack[if_stack_idx <= 1 ? if_true : if_stack_idx-2]],
                if_stack_idx-1);
 
    return if_stack[--if_stack_idx];
}

pp_push_define_state()

int pp_push_define_state

(

void

)

Definition at line 274 of file preproc.c.

{
    pp_def_state_t *state = pp_xmalloc( sizeof(*state) );
    if(!state)
        return 1;
 
    memset( state->defines, 0, sizeof(state->defines) );
    state->next = pp_def_state;
    pp_def_state = state;
    return 0;
}

pp_push_if()

void pp_push_if

(

pp_if_state_t

s

)

Definition at line 592 of file preproc.c.

{
    if(if_stack_idx >= MAXIFSTACK)
        pp_internal_error(__FILE__, __LINE__, "#if-stack overflow; #{if,ifdef,ifndef} nested too deeply (> %d)", MAXIFSTACK);
 
    if(pp_flex_debug)
        fprintf(stderr, "Push if %s:%d: %s(%d) -> %s(%d)\n", pp_status.input, pp_status.line_number, pp_if_state_str[pp_if_state()], if_stack_idx, pp_if_state_str[s], if_stack_idx+1);
 
    if_stack[if_stack_idx++] = s;
 
    switch(s)
    {
    case if_true:
    case if_elsetrue:
        break;
    case if_false:
    case if_elsefalse:
    case if_elif:
    case if_ignore:
        pp_push_ignore_state();
        break;
    default:
        pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d)", (int)pp_if_state());
    }
}

pp_xmalloc()

void * pp_xmalloc

(

size_t

size

)

Definition at line 77 of file preproc.c.

{
    void *res;
 
    assert(size > 0);
    res = malloc(size);
    if(res == NULL)
    {
        /* Set the error flag */
        pp_status.state = 1;
    }
    return res;
}

pp_xrealloc()

void * pp_xrealloc	(	void *	p,
		size_t	size
	)

Definition at line 91 of file preproc.c.

{
    void *res;
 
    assert(size > 0);
    res = realloc(p, size);
    if(res == NULL)
    {
        /* Set the error flag */
        pp_status.state = 1;
    }
    return res;
}

pp_xstrdup()

char * pp_xstrdup

(

const char *

str

)

Definition at line 105 of file preproc.c.

{
    char *s;
    int len;
 
    assert(str != NULL);
    len = strlen(str)+1;
    s = pp_xmalloc(len);
    if(!s)
        return NULL;
    return memcpy(s, str, len);
}

pphash()

static int pphash ( const char *  str )

static

Definition at line 213 of file preproc.c.

{
    int sum = 0;
    while(*str)
        sum += *str++;
    return sum % HASHKEY;
}

pplookup()

pp_entry_t * pplookup

(

const char *

ident

)

Definition at line 221 of file preproc.c.

{
    int idx;
    pp_entry_t *ppp;
 
    if(!ident)
        return NULL;
    idx = pphash(ident);
    for(ppp = pp_def_state->defines[idx]; ppp; ppp = ppp->next)
    {
        if(!strcmp(ident, ppp->ident))
            return ppp;
    }
    return NULL;
}

ppy_error()

int ppy_error	(	const char *	s,
			...
	)

Definition at line 735 of file preproc.c.

{
    va_list ap;
    va_start(ap, s);
    wpp_callbacks->error(pp_status.input, pp_status.line_number, pp_status.char_number, ppy_text, s, ap);
    va_end(ap);
    pp_status.state = 1;
    return 1;
}

ppy_warning()

int ppy_warning	(	const char *	s,
			...
	)

Definition at line 745 of file preproc.c.

{
    va_list ap;
    va_start(ap, s);
    wpp_callbacks->warning(pp_status.input, pp_status.line_number, pp_status.char_number, ppy_text, s, ap);
    va_end(ap);
    return 0;
}

wpp_add_include_path()

int wpp_add_include_path

(

const char *

path

)

Definition at line 460 of file preproc.c.

{
    char *tok;
    char *cpy = pp_xstrdup(path);
    if(!cpy)
        return 1;
 
    tok = strtok(cpy, INCLUDESEPARATOR);
    while(tok)
    {
        if(*tok) {
            char *dir;
            char *cptr;
            char **new_path;
 
            dir = pp_xstrdup(tok);
            if(!dir)
            {
                free(cpy);
                return 1;
            }
            for(cptr = dir; *cptr; cptr++)
            {
                /* Convert to forward slash */
                if(*cptr == '\\')
                    *cptr = '/';
            }
            /* Kill eventual trailing '/' */
            if(*(cptr = dir + strlen(dir)-1) == '/')
                *cptr = '\0';
 
            /* Add to list */
            new_path = pp_xrealloc(includepath, (nincludepath+1) * sizeof(*includepath));
            if(!new_path)
            {
                free(dir);
                free(cpy);
                return 1;
            }
            includepath = new_path;
            includepath[nincludepath] = dir;
            nincludepath++;
        }
        tok = strtok(NULL, INCLUDESEPARATOR);
    }
    free(cpy);
    return 0;
}

Referenced by main().

wpp_default_close()

static void wpp_default_close ( void *  file )

static

Definition at line 200 of file preproc.c.

                                          {
    fclose(file);
}

wpp_default_error()

static void wpp_default_error ( const char *  file, int  line, int  col, const char *  near, const char *  msg, va_list  ap  )

static

Definition at line 711 of file preproc.c.

{
    generic_msg(msg, "Error", near, ap);
    exit(1);
}

wpp_default_lookup()

static char * wpp_default_lookup ( const char *  name, int  type, const char *  parent_name, char **  include_path, int  include_path_count  )

static

Definition at line 118 of file preproc.c.

{
    char *cpy;
    char *cptr;
    char *path;
    const char *ccptr;
    int i, fd;
 
    cpy = pp_xmalloc(strlen(name)+1);
    if(!cpy)
        return NULL;
    cptr = cpy;
 
    for(ccptr = name; *ccptr; ccptr++)
    {
        /* Convert to forward slash */
        if(*ccptr == '\\') {
            /* kill double backslash */
            if(ccptr[1] == '\\')
                ccptr++;
            *cptr = '/';
        }else {
            *cptr = *ccptr;
        }
        cptr++;
    }
    *cptr = '\0';
 
    if(type && parent_name)
    {
        /* Search directory of parent include and then -I path */
        const char *p;
 
        if ((p = strrchr( parent_name, '/' ))) p++;
        else p = parent_name;
        path = pp_xmalloc( (p - parent_name) + strlen(cpy) + 1 );
        if(!path)
        {
            free(cpy);
            return NULL;
        }
        memcpy( path, parent_name, p - parent_name );
        strcpy( path + (p - parent_name), cpy );
        fd = open( path, O_RDONLY );
        if (fd != -1)
        {
            close( fd );
            free( cpy );
            return path;
        }
        free( path );
    }
    /* Search -I path */
    for(i = 0; i < include_path_count; i++)
    {
        path = pp_xmalloc(strlen(include_path[i]) + strlen(cpy) + 2);
        if(!path)
        {
            free(cpy);
            return NULL;
        }
        strcpy(path, include_path[i]);
        strcat(path, "/");
        strcat(path, cpy);
        fd = open( path, O_RDONLY );
        if (fd != -1)
        {
            close( fd );
            free( cpy );
            return path;
        }
        free( path );
    }
    free( cpy );
    return NULL;
}

Referenced by wpp_find_include().

wpp_default_open()

static void * wpp_default_open ( const char *  filename, int  type  )

static

Definition at line 196 of file preproc.c.

                                                              {
    return fopen(filename,"rt");
}

wpp_default_read()

static int wpp_default_read ( void *  file, char *  buffer, unsigned int  len  )

static

Definition at line 204 of file preproc.c.

                                                                       {
    return fread(buffer, 1, len, file);
}

wpp_default_warning()

static void wpp_default_warning ( const char *  file, int  line, int  col, const char *  near, const char *  msg, va_list  ap  )

static

Definition at line 717 of file preproc.c.

{
    generic_msg(msg, "Warning", near, ap);
}

wpp_default_write()

static void wpp_default_write ( const char *  buffer, unsigned int  len  )

static

Definition at line 208 of file preproc.c.

                                                                      {
    fwrite(buffer, 1, len, ppy_out);
}

wpp_find_include()

char * wpp_find_include	(	const char *	name,
		const char *	parent_name
	)

Definition at line 509 of file preproc.c.

{
    return wpp_default_lookup(name, !!parent_name, parent_name, includepath, nincludepath);
}

Referenced by open_typelib().

Variable Documentation

default_callbacks

const struct wpp_callbacks default_callbacks

static

Initial value:

=
{
    wpp_default_lookup,
    wpp_default_open,
    wpp_default_close,
    wpp_default_read,
    wpp_default_write,
    wpp_default_error,
    wpp_default_warning,
}

Definition at line 722 of file preproc.c.

if_stack

pp_if_state_t if_stack[MAXIFSTACK]

static

Definition at line 52 of file preproc.c.

if_stack_idx

int if_stack_idx = 0

static

Definition at line 53 of file preproc.c.

includepath

char** includepath

static

Definition at line 457 of file preproc.c.

Referenced by pp_open_include(), wpp_add_include_path(), and wpp_find_include().

nincludepath

int nincludepath = 0

static

Definition at line 458 of file preproc.c.

Referenced by pp_open_include(), wpp_add_include_path(), and wpp_find_include().

pp_def_state

pp_def_state_t* pp_def_state

static

Definition at line 49 of file preproc.c.

pp_if_state_str

const char* const pp_if_state_str[]

static

Initial value:

= {
    "if_false",
    "if_true",
    "if_elif",
    "if_elsefalse",
    "if_elsetrue",
    "if_ignore"
}

Definition at line 583 of file preproc.c.

Referenced by pp_pop_if(), and pp_push_if().

pp_status

struct pp_status pp_status

Definition at line 39 of file preproc.c.

wpp_callbacks

const struct wpp_callbacks* wpp_callbacks = &default_callbacks

Definition at line 733 of file preproc.c.