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 #include <Zend/zend_smart_str.h>
  32
  33 struct psi_decl_var *psi_decl_var_init(zend_string *name, unsigned pl,
  34                 unsigned as)
  35 {
  36         struct psi_decl_var *v = pecalloc(1, sizeof(*v), 1);
  37         if (name) {
  38                 v->name = zend_string_copy(name);
  39                 v->fqn = zend_string_copy(name);
  40         }
  41         v->pointer_level = pl;
  42         v->array_size = as;
  43         return v;
  44 }
  45
  46 struct psi_decl_var *psi_decl_var_copy(struct psi_decl_var *src)
  47 {
  48         struct psi_decl_var *dest = pecalloc(1, sizeof(*dest), 1);
  49
  50         *dest = *src;
  51
  52         if (dest->name) {
  53                 dest->name = zend_string_copy(dest->name);
  54                 dest->fqn = zend_string_copy(dest->fqn);
  55         }
  56
  57         if (dest->token) {
  58                 dest->token = psi_token_copy(dest->token);
  59         }
  60         return dest;
  61 }
  62
  63 void psi_decl_var_free(struct psi_decl_var **var_ptr)
  64 {
  65         if (*var_ptr) {
  66                 struct psi_decl_var *var = *var_ptr;
  67
  68                 *var_ptr = NULL;
  69                 psi_token_free(&var->token);
  70                 if (var->name) {
  71                         zend_string_release(var->name);
  72                         zend_string_release(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->val : "/**/");
  83         if (var->array_size && var->arg->type->type != PSI_T_FUNCTION) {
  84                 dprintf(fd, "[%u]", var->array_size);
  85         }
  86 }
  87
  88 static inline zend_string *psi_decl_var_name_prepend(zend_string *current, zend_string *prepend) {
  89         smart_str name = {0};
  90
  91         smart_str_alloc(&name, prepend->len + 1 + current->len, 1);
  92         smart_str_append_ex(&name, prepend, 1);
  93         smart_str_appendc_ex(&name, '.', 1);
  94         smart_str_append_ex(&name, current, 1);
  95
  96         return smart_str_extract(&name);
  97 }
  98
  99 bool psi_decl_var_validate(struct psi_data *data, struct psi_decl_var *dvar,
 100                 struct psi_validate_scope *scope)
 101 {
 102         bool okay = false;
 103
 104         if (scope && scope->current_let) {
 105                 struct psi_let_exp *current_let_exp = scope->current_let;
 106
 107                 /* walk up the let expression tree until found */
 108                 while ((current_let_exp = current_let_exp->outer)) {
 109                         struct psi_decl_var *svar = current_let_exp->var;
 110
 111
 112                         if (!okay) {
 113                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 114                                                 NULL);
 115
 116                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 117                                         okay = true;
 118                                 } else if (zend_string_equals(svar->name, dvar->name)) {
 119                                         dvar->arg = svar->arg;
 120                                         okay = true;
 121                                 }
 122                         }
 123                         if (okay) {
 124                                 zend_string *tmp = dvar->fqn;
 125                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 126                                 zend_string_release(tmp);
 127                         }
 128                 }
 129         } else if (scope && scope->current_set) {
 130                 struct psi_set_exp *current_set_exp = scope->current_set;
 131
 132                 /* walk up the set expression tree until found */
 133                 while ((current_set_exp = current_set_exp->outer)) {
 134                         struct psi_decl_var *svar = psi_set_exp_get_decl_var(
 135                                         current_set_exp);
 136
 137                         if (!okay) {
 138                                 struct psi_plist *args = psi_decl_type_get_args(svar->arg->type,
 139                                                 NULL);
 140
 141                                 if (args && psi_decl_arg_get_by_var(dvar, args, NULL)) {
 142                                         okay = true;
 143                                 } else if (zend_string_equals(svar->name, dvar->name)) {
 144                                         dvar->arg = svar->arg;
 145                                         okay = true;
 146                                 }
 147                         }
 148                         if (okay) {
 149                                 zend_string *tmp = dvar->fqn;
 150                                 dvar->fqn = psi_decl_var_name_prepend(dvar->fqn, svar->name);
 151                                 zend_string_release(tmp);
 152                         }
 153                 }
 154         }
 155
 156         if (!okay && scope && scope->impl && psi_impl_get_decl_arg(scope->impl, dvar)) {
 157                 okay = true;
 158         }
 159         if (!okay && scope && scope->cb_decl && psi_decl_get_arg(scope->cb_decl, dvar)) {
 160                 okay = true;
 161         }
 162
 163         return okay;
 164 }
 165
 166 size_t psi_decl_var_get_size(struct psi_decl_var *var)
 167 {
 168         struct psi_decl_var *decl_var = var->arg->var;
 169         size_t pointer_level = decl_var->pointer_level - var->pointer_level;
 170
 171         if (pointer_level) {
 172                 return SIZEOF_VOID_P;
 173         }
 174
 175         return psi_decl_type_get_size(var->arg->type, NULL);
 176 }