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 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #else
  29 # include "php_config.h"
  30 #endif
  31 #include "data.h"
  32
  33 #include <assert.h>
  34
  35 #include <Zend/zend_smart_str.h>
  36
  37 struct psi_decl_var *psi_decl_var_init(zend_string *name, unsigned pl,
  38                 unsigned as)
  39 {
  40         struct psi_decl_var *v = pecalloc(1, sizeof(*v), 1);
  41         if (name) {
  42                 v->name = zend_string_copy(name);
  43                 v->fqn = zend_string_copy(name);
  44         }
  45         v->pointer_level = pl;
  46         v->array_size = as;
  47         return v;
  48 }
  49
  50 struct psi_decl_var *psi_decl_var_copy(struct psi_decl_var *src)
  51 {
  52         struct psi_decl_var *dest = pecalloc(1, sizeof(*dest), 1);
  53
  54         *dest = *src;
  55
  56         if (dest->name) {
  57                 dest->name = zend_string_copy(dest->name);
  58                 dest->fqn = zend_string_copy(dest->fqn);
  59         }
  60
  61         if (dest->token) {
  62                 dest->token = psi_token_copy(dest->token);
  63         }
  64         return dest;
  65 }
  66
  67 void psi_decl_var_free(struct psi_decl_var **var_ptr)
  68 {
  69         if (*var_ptr) {
  70                 struct psi_decl_var *var = *var_ptr;
  71
  72                 *var_ptr = NULL;
  73                 psi_token_free(&var->token);
  74                 if (var->name) {
  75                         zend_string_release(var->name);
  76                         zend_string_release(var->fqn);
  77                 }
  78                 free(var);
  79         }
  80 }
  81
  82 void psi_decl_var_dump(struct psi_dump *dump, struct psi_decl_var *var)
  83 {
  84         PSI_DUMP(dump, "%s%s",
  85                         psi_t_indirection(var->pointer_level - !!var->array_size),
  86                         var->name ? var->name->val : "/**/");
  87         if (var->array_size && var->arg->type->type != PSI_T_FUNCTION) {
  88                 PSI_DUMP(dump, "[%u]", var->array_size);
  89         }
  90 }
  91
  92 static inline zend_string *psi_decl_var_name_prepend(zend_string *current, zend_string *prepend) {
  93         smart_str name = {0};
  94
  95         smart_str_alloc(&name, prepend->len + 1 + current->len, 1);
  96         smart_str_append_ex(&name, prepend, 1);
  97         smart_str_appendc_ex(&name, '.', 1);
  98         smart_str_append_ex(&name, current, 1);
  99
 100         return smart_str_extract(&name);
 101 }
 102
 103 bool psi_decl_var_validate(struct psi_data *data, struct psi_decl_var *dvar,
 104                 struct psi_validate_scope *scope)
 105 {
 106         bool okay = false;
 107
 108         if (scope && scope->current_let) {
 109                 struct psi_let_exp *current_let_exp = scope->current_let;
 110
 111                 /* walk up the let expression tree until found */
 112                 while ((current_let_exp = current_let_exp->outer)) {
 113                         struct psi_decl_var *svar = current_let_exp->var;
 114
 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 (zend_string_equals(svar->name, dvar->name)) {
 123                                         dvar->arg = svar->arg;
 124                                         okay = true;
 125                                 }
 126                         }
 127                         if (okay) {
 128                                 zend_string *tmp = dvar->fqn;
 129                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 130                                 zend_string_release(tmp);
 131                         }
 132                 }
 133         } else if (scope && scope->current_set) {
 134                 struct psi_set_exp *current_set_exp = scope->current_set;
 135
 136                 /* walk up the set expression tree until found */
 137                 while ((current_set_exp = current_set_exp->outer)) {
 138                         struct psi_decl_var *svar = psi_set_exp_get_decl_var(
 139                                         current_set_exp);
 140
 141                         if (!okay) {
 142                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 143                                                 NULL);
 144
 145                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 146                                         okay = true;
 147                                 } else if (zend_string_equals(svar->name, dvar->name)) {
 148                                         dvar->arg = svar->arg;
 149                                         okay = true;
 150                                 }
 151                         }
 152                         if (okay) {
 153                                 zend_string *tmp = dvar->fqn;
 154                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 155                                 zend_string_release(tmp);
 156                         }
 157                 }
 158         }
 159
 160         if (!okay && scope && scope->impl && psi_impl_get_decl_arg(scope->impl, dvar)) {
 161                 okay = true;
 162         }
 163         if (!okay && scope && scope->cb_decl && psi_decl_get_arg(scope->cb_decl, dvar)) {
 164                 okay = true;
 165         }
 166
 167         return okay;
 168 }
 169
 170 size_t psi_decl_var_get_size(struct psi_decl_var *var)
 171 {
 172         struct psi_decl_var *decl_var = var->arg->var;
 173         size_t pointer_level = decl_var->pointer_level - var->pointer_level;
 174
 175         if (pointer_level) {
 176                 return SIZEOF_VOID_P;
 177         }
 178
 179         return psi_decl_type_get_size(var->arg->type, NULL);
 180 }