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_validate_scope *scope)
  90 {
  91         bool okay = false;
  92
  93         if (scope && scope->current_let) {
  94                 struct psi_let_exp *current_let_exp = scope->current_let;
  95
  96                 /* walk up the let expression tree until found */
  97                 while ((current_let_exp = current_let_exp->outer)) {
  98                         struct psi_decl_var *svar = current_let_exp->var;
  99
 100
 101                         if (!okay) {
 102                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 103                                                 NULL);
 104
 105                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 106                                         okay = true;
 107                                 } else if (!strcmp(svar->name, dvar->name)) {
 108                                         dvar->arg = svar->arg;
 109                                         okay = true;
 110                                 }
 111                         }
 112                         if (okay) {
 113                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 114                         }
 115                 }
 116         } else if (scope && scope->current_set) {
 117                 struct psi_set_exp *current_set_exp = scope->current_set;
 118
 119                 /* walk up the set expression tree until found */
 120                 while ((current_set_exp = current_set_exp->outer)) {
 121                         struct psi_decl_var *svar = psi_set_exp_get_decl_var(
 122                                         current_set_exp);
 123
 124                         if (!okay) {
 125                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 126                                                 NULL);
 127
 128                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 129                                         okay = true;
 130                                 } else if (!strcmp(svar->name, dvar->name)) {
 131                                         dvar->arg = svar->arg;
 132                                         okay = true;
 133                                 }
 134                         }
 135                         if (okay) {
 136                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 137                         }
 138                 }
 139         }
 140
 141         if (!okay && scope && scope->impl && psi_impl_get_decl_arg(scope->impl, dvar)) {
 142                 okay = true;
 143         }
 144         if (!okay && scope && scope->cb_decl && psi_decl_get_arg(scope->cb_decl, dvar)) {
 145                 okay = true;
 146         }
 147
 148         return okay;
 149 }
 150
 151 size_t psi_decl_var_get_size(struct psi_decl_var *var)
 152 {
 153         struct psi_decl_var *decl_var = var->arg->var;
 154         size_t pointer_level = decl_var->pointer_level - var->pointer_level;
 155
 156         if (pointer_level) {
 157                 return SIZEOF_VOID_P;
 158         }
 159
 160         return psi_decl_type_get_size(var->arg->type, NULL);
 161 }