git.m6w6.name Git - m6w6/ext-psi/blob - src/types/decl_var.c

   1 /*******************************************************************************
   2  Copyright (c) 2016, Michael Wallner <mike@php.net>.
   3  All rights reserved.
   4
   5  Redistribution and use in source and binary forms, with or without
   6  modification, are permitted provided that the following conditions are met:
   7
   8  * Redistributions of source code must retain the above copyright notice,
   9  this list of conditions and the following disclaimer.
  10  * Redistributions in binary form must reproduce the above copyright
  11  notice, this list of conditions and the following disclaimer in the
  12  documentation and/or other materials provided with the distribution.
  13
  14  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  15  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  18  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  20  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  21  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  22  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *******************************************************************************/
  25
  26 #include "php_psi_stdinc.h"
  27 #include "data.h"
  28
  29 #include <assert.h>
  30
  31 struct psi_decl_var *psi_decl_var_init(const char *name, unsigned pl,
  32                 unsigned as)
  33 {
  34         struct psi_decl_var *v = calloc(1, sizeof(*v));
  35         v->name = strdup(name);
  36         v->fqn = strdup(name);
  37         v->pointer_level = pl;
  38         v->array_size = as;
  39         return v;
  40 }
  41
  42 struct psi_decl_var *psi_decl_var_copy(struct psi_decl_var *src)
  43 {
  44         struct psi_decl_var *dest = calloc(1, sizeof(*dest));
  45
  46         *dest = *src;
  47         dest->name = strdup(dest->name);
  48         dest->fqn = strdup(dest->fqn);
  49
  50         if (dest->token) {
  51                 dest->token = psi_token_copy(dest->token);
  52         }
  53         return dest;
  54 }
  55
  56 void psi_decl_var_free(struct psi_decl_var **var_ptr)
  57 {
  58         if (*var_ptr) {
  59                 struct psi_decl_var *var = *var_ptr;
  60
  61                 *var_ptr = NULL;
  62                 if (var->token) {
  63                         free(var->token);
  64                 }
  65                 free(var->name);
  66                 free(var->fqn);
  67                 free(var);
  68         }
  69 }
  70
  71 void psi_decl_var_dump(int fd, struct psi_decl_var *var)
  72 {
  73         dprintf(fd, "%s%s",
  74                         psi_t_indirection(var->pointer_level - !!var->array_size),
  75                         var->name);
  76         if (var->array_size) {
  77                 dprintf(fd, "[%u]", var->array_size);
  78         }
  79 }
  80
  81 bool psi_decl_var_validate(struct psi_data *data, struct psi_decl_var *dvar,
  82                 struct psi_decl *decl, struct psi_let_exp *let_exp,
  83                 struct psi_set_exp *set_exp)
  84 {
  85         bool okay = false;
  86         struct psi_let_exp *current_let_exp = let_exp;
  87         struct psi_set_exp *current_set_exp = set_exp;
  88
  89         if (current_let_exp) {
  90                 /* walk up the let expression tree until found */
  91                 while ((current_let_exp = current_let_exp->outer)) {
  92                         struct psi_decl_var *svar = current_let_exp->var;
  93
  94
  95                         if (!okay) {
  96                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
  97                                                 NULL);
  98
  99                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 100                                         okay = true;
 101                                 } else if (!strcmp(svar->name, dvar->name)) {
 102                                         dvar->arg = svar->arg;
 103                                         okay = true;
 104                                 }
 105                         }
 106                         if (okay) {
 107                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 108                         }
 109                 }
 110         } else if (current_set_exp) {
 111                 /* walk up the set expression tree until found */
 112                 while ((current_set_exp = current_set_exp->outer)) {
 113                         struct psi_decl_var *svar = psi_set_exp_get_decl_var(
 114                                         current_set_exp);
 115
 116                         if (!okay) {
 117                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 118                                                 NULL);
 119
 120                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 121                                         okay = true;
 122                                 } else if (!strcmp(svar->name, dvar->name)) {
 123                                         dvar->arg = svar->arg;
 124                                         okay = true;
 125                                 }
 126                         }
 127                         if (okay) {
 128                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 129                         }
 130                 }
 131         }
 132
 133         if (decl && !okay && psi_decl_get_arg(decl, dvar)) {
 134                 okay = true;
 135         }
 136
 137         return okay;
 138 }
 139
 140 size_t psi_decl_var_get_size(struct psi_decl_var *var)
 141 {
 142         struct psi_decl_var *decl_var = var->arg->var;
 143         size_t pointer_level = decl_var->pointer_level - var->pointer_level;
 144
 145         if (pointer_level) {
 146                 return SIZEOF_VOID_P;
 147         }
 148
 149         return psi_decl_type_get_size(var->arg->type, NULL);
 150 }