diff options
Diffstat (limited to 'cppsetup.c')
| -rw-r--r-- | cppsetup.c | 225 |
1 files changed, 10 insertions, 215 deletions
@@ -24,7 +24,7 @@ used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ -/* $XFree86: xc/config/makedepend/cppsetup.c,v 3.12 2004/03/05 16:02:58 tsi Exp $ */ +/* $XFree86: xc/config/makedepend/cppsetup.c,v 3.10 2001/12/14 19:53:20 dawes Exp $ */ #include "def.h" @@ -86,8 +86,8 @@ cppsetup(char *line, struct filepointer *filep, struct inclist *inc) pend = p; ptrtab = slotab+COFF; - *--inp = SALT; - outp=inp; + *--inp = SALT; + outp=inp; value = yyparse(); *p = savec; return(value); @@ -181,231 +181,26 @@ my_eval_defined (IfParser *ip, const char *var, int len) return 0; } - -int -variable_has_args (IfParser *ip, const char *var, int len) -{ - struct symtab **s = lookup_variable (ip, var, len); - - if (!s) - return 0; - - if ((*s)->s_args) - return 1; - else - return 0; -} - -/* - * this is tiny linked list implementation for temporarily storing - * and retriving pairs of macro parameter names and passed in macro arguments. - */ -typedef struct keyword_type_rec keyword_type; -struct keyword_type_rec { - keyword_type* pnext; - char *name; - char *value; -}; - - -static keyword_type* -build_keyword_list (const char* keys, const char* values) -{ - keyword_type *phead = NULL, *pnew; - const char *ptmp; - int len; - - while (*keys) - { - /* alloc new member */ - pnew = malloc(sizeof(*pnew)); - if (!pnew) - { - fprintf(stderr, "out of memory in my_eval_variable\n"); - exit(1); - } - - /* extract key */ - ptmp = keys; - len = 0; - while (*ptmp && (*ptmp != ',')) - ptmp++, len++; - pnew->name = malloc(len+1); - strncpy(pnew->name, keys, len); - pnew->name[len] = '\0'; - keys = ptmp; - if (*keys) - keys++; - - /* extract arg */ - ptmp = values; - len = 0; - while (*ptmp && (*ptmp != ',') && (*ptmp != ')')) - ptmp++, len++; - pnew->value = malloc(len+1); - strncpy(pnew->value, values, len); - pnew->value[len] = '\0'; - values = ptmp; - if (*values) - values++; - - /* chain in this new member */ - pnew->pnext = phead; - phead = pnew; - } - - return phead; -} - - -static const keyword_type* -get_keyword_entry (const keyword_type* phead, const char* keyname, const int keylen) -{ - while (phead) - { - if (keylen == strlen(phead->name)) - if (strncmp(keyname, phead->name, keylen) == 0) - return phead; - phead = phead->pnext; - } - - return phead; -} - - -static void -free_keyword_list (keyword_type* phead) -{ - keyword_type* pnext; - while (phead) - { - pnext = phead->pnext; - free(phead->name); - free(phead->value); - free(phead); - phead = pnext; - } -} - - #define isvarfirstletter(ccc) (isalpha(ccc) || (ccc) == '_') static long -my_eval_variable (IfParser *ip, const char *var, int len, const char *args) +my_eval_variable (IfParser *ip, const char *var, int len) { long val; - char *newline = NULL; - int newline_len = 0, newline_offset = 0; struct symtab **s; s = lookup_variable (ip, var, len); if (!s) return 0; - - if ((*s)->s_args) - { - const char *psrc, *psrc_qualifier; - char *pdst; - const keyword_type *pkeyword; - keyword_type *pkeylist; - - newline_len = 64; /* start with some buffer, might increase later */ - newline = malloc(newline_len); - if (!newline) - { - fprintf(stderr, "out of memory in my_eval_variable\n"); - exit(1); - } - - /* build up a list that pairs keywords and args */ - pkeylist = build_keyword_list((*s)->s_args,args); - - /* parse for keywords in macro content */ - psrc = (*s)->s_value; - pdst = newline; - while (*psrc) - { - /* parse for next qualifier */ - psrc_qualifier = psrc; - while (isalnum(*psrc) || *psrc == '_') - psrc++; - - /* check if qualifier is in parameter keywords listing of macro */ - pkeyword = get_keyword_entry(pkeylist,psrc_qualifier,psrc - psrc_qualifier); - if (pkeyword) - { /* convert from parameter keyword to given argument */ - const char *ptmp = pkeyword->value; - while (*ptmp) - { - *pdst++ = *ptmp++; - newline_offset++; - if (newline_offset + 2 >= newline_len) - { - newline_len *= 2; - newline = realloc(newline, newline_len); - if (!newline) - { - fprintf(stderr, "out of memory in my_eval_variable\n"); - exit(1); - } - pdst = &newline[newline_offset]; - } - } - } - else - { /* perform post copy of qualifier that is not a parameter keyword */ - const char *ptmp = psrc_qualifier; - while (ptmp < psrc) - { - *pdst++ = *ptmp++; - newline_offset++; - if (newline_offset + 2 >= newline_len) - { - newline_len *= 2; - newline = realloc(newline, newline_len); - if (!newline) - { - fprintf(stderr, "out of memory in my_eval_variable\n"); - exit(1); - } - pdst = &newline[newline_offset]; - } - } - } - - /* duplicate chars that are not qualifier chars */ - while (!(isalnum(*psrc) || *psrc == '_' || *psrc == '\0')) - { - *pdst++ = *psrc++; - newline_offset++; - if (newline_offset + 2 >= newline_len) - { - newline_len *= 2; - newline = realloc(newline, newline_len); - if (!newline) - { - fprintf(stderr, "out of memory in my_eval_variable\n"); - exit(1); - } - pdst = &newline[newline_offset]; - } - } - } - - *pdst = '\0'; - free_keyword_list(pkeylist); - var = newline; - } - else - { - var = (*s)->s_value; - } + do { + var = (*s)->s_value; + if (!isvarfirstletter(*var) || !strcmp((*s)->s_name, var)) + break; + s = lookup_variable (ip, var, strlen(var)); + } while (s); var = ParseIfExpression(ip, var, &val); if (var && *var) debug(4, ("extraneous: '%s'\n", var)); - - if (newline) free(newline); - return val; } |