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         if (name) {
  36                 v->name = strdup(name);
  37                 v->fqn = strdup(name);
  38         }
  39         v->pointer_level = pl;
  40         v->array_size = as;
  41         return v;
  42 }
  43
  44 struct psi_decl_var *psi_decl_var_copy(struct psi_decl_var *src)
  45 {
  46         struct psi_decl_var *dest = calloc(1, sizeof(*dest));
  47
  48         *dest = *src;
  49
  50         if (dest->name) {
  51                 dest->name = strdup(dest->name);
  52                 dest->fqn = strdup(dest->fqn);
  53         }
  54
  55         if (dest->token) {
  56                 dest->token = psi_token_copy(dest->token);
  57         }
  58         return dest;
  59 }
  60
  61 void psi_decl_var_free(struct psi_decl_var **var_ptr)
  62 {
  63         if (*var_ptr) {
  64                 struct psi_decl_var *var = *var_ptr;
  65
  66                 *var_ptr = NULL;
  67                 if (var->token) {
  68                         free(var->token);
  69                 }
  70                 if (var->name) {
  71                         free(var->name);
  72                         free(var->fqn);
  73                 }
  74                 free(var);
  75         }
  76 }
  77
  78 void psi_decl_var_dump(int fd, struct psi_decl_var *var)
  79 {
  80         dprintf(fd, "%s%s",
  81                         psi_t_indirection(var->pointer_level - !!var->array_size),
  82                         var->name ? var->name : "/**/");
  83         if (var->array_size) {
  84                 dprintf(fd, "[%u]", var->array_size);
  85         }
  86 }
  87
  88 bool psi_decl_var_validate(struct psi_data *data, struct psi_decl_var *dvar,
  89                 struct psi_decl *decl, struct psi_let_exp *let_exp,
  90                 struct psi_set_exp *set_exp)
  91 {
  92         bool okay = false;
  93         struct psi_let_exp *current_let_exp = let_exp;
  94         struct psi_set_exp *current_set_exp = set_exp;
  95
  96         if (current_let_exp) {
  97                 /* walk up the let expression tree until found */
  98                 while ((current_let_exp = current_let_exp->outer)) {
  99                         struct psi_decl_var *svar = current_let_exp->var;
 100
 101
 102                         if (!okay) {
 103                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 104                                                 NULL);
 105
 106                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 107                                         okay = true;
 108                                 } else if (!strcmp(svar->name, dvar->name)) {
 109                                         dvar->arg = svar->arg;
 110                                         okay = true;
 111                                 }
 112                         }
 113                         if (okay) {
 114                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 115                         }
 116                 }
 117         } else if (current_set_exp) {
 118                 /* walk up the set expression tree until found */
 119                 while ((current_set_exp = current_set_exp->outer)) {
 120                         struct psi_decl_var *svar = psi_set_exp_get_decl_var(
 121                                         current_set_exp);
 122
 123                         if (!okay) {
 124                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 125                                                 NULL);
 126
 127                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 128                                         okay = true;
 129                                 } else if (!strcmp(svar->name, dvar->name)) {
 130                                         dvar->arg = svar->arg;
 131                                         okay = true;
 132                                 }
 133                         }
 134                         if (okay) {
 135                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 136                         }
 137                 }
 138         }
 139
 140         if (decl && !okay && psi_decl_get_arg(decl, dvar)) {
 141                 okay = true;
 142         }
 143
 144         return okay;
 145 }
 146
 147 size_t psi_decl_var_get_size(struct psi_decl_var *var)
 148 {
 149         struct psi_decl_var *decl_var = var->arg->var;
 150         size_t pointer_level = decl_var->pointer_level - var->pointer_level;
 151
 152         if (pointer_level) {
 153                 return SIZEOF_VOID_P;
 154         }
 155
 156         return psi_decl_type_get_size(var->arg->type, NULL);
 157 }