git.m6w6.name Git - m6w6/ext-psi/blob - src/types/let_callback.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 struct psi_let_callback *psi_let_callback_init(struct psi_let_func *func,
  34                 struct psi_plist *args, struct psi_plist *cb_args)
  35 {
  36         struct psi_let_callback *cb = pecalloc(1, sizeof(*cb), 1);
  37         cb->func = func;
  38         cb->args = args;
  39         cb->cb_args = cb_args;
  40         return cb;
  41 }
  42
  43 void psi_let_callback_free(struct psi_let_callback **cb_ptr)
  44 {
  45         if (*cb_ptr) {
  46                 struct psi_let_callback *cb = *cb_ptr;
  47
  48                 *cb_ptr = NULL;
  49                 psi_let_func_free(&cb->func);
  50                 psi_plist_free(cb->args);
  51                 if (cb->cb_args) {
  52                         psi_plist_free(cb->cb_args);
  53                 }
  54                 psi_token_free(&cb->token);
  55                 free(cb);
  56         }
  57 }
  58
  59
  60 static inline bool psi_let_callback_validate_decl_args(struct psi_data *data,
  61                 struct psi_let_callback *cb, struct psi_decl *cb_decl,
  62                 struct psi_impl *impl)
  63 {
  64         size_t i;
  65         struct psi_decl_var *call_arg;
  66
  67         if (cb->cb_args) {
  68                 if (psi_plist_count(cb->cb_args) != psi_plist_count(cb_decl->args)) {
  69                         data->error(data, cb->token, PSI_WARNING,
  70                                         "Argument count of callback statement of implementation '%s'"
  71                                         "does not match argument count of callback declaration '%s'",
  72                                         impl->func->name->val, cb_decl->func->var->name->val);
  73                         return false;
  74                 }
  75
  76                 for (i = 0; psi_plist_get(cb->cb_args, i, &call_arg); ++i) {
  77                         psi_plist_get(cb_decl->args, i, &call_arg->arg);
  78                 }
  79         }
  80         return true;
  81 }
  82
  83 bool psi_let_callback_validate(struct psi_data *data, struct psi_let_callback *cb,
  84                 struct psi_validate_scope *scope)
  85 {
  86         size_t i = 0;
  87         struct psi_decl_type *cb_type;
  88         struct psi_let_exp *exp = scope->current_let;
  89         struct psi_decl_var *cb_var = exp->var;
  90         struct psi_set_exp *set_exp, *parent_set = scope->current_set;
  91
  92         cb_type = psi_decl_type_get_real(cb_var->arg->type);
  93         if (cb_type->type != PSI_T_FUNCTION) {
  94                 data->error(data, cb_var->token, PSI_WARNING,
  95                                 "Expected a function: %s",
  96                                 cb_var->name->val);
  97                 return false;
  98         }
  99         cb->decl = cb_type->real.func;
 100
 101         if (!psi_decl_validate_nodl(data, cb->decl, scope)) {
 102                 return false;
 103         }
 104         if (!psi_let_callback_validate_decl_args(data, cb, cb->decl, scope->impl)) {
 105                 return false;
 106         }
 107         while (psi_plist_get(cb->args, i++, &set_exp)) {
 108                 if (cb->cb_args) {
 109                         struct psi_decl_var *cb_var;
 110
 111                         if (psi_plist_get(cb->cb_args, i - 1, &cb_var)) {
 112                                 struct psi_decl_var *dvar = psi_set_exp_get_decl_var(set_exp);
 113                                 dvar->arg = cb_var->arg;
 114                         }
 115                 }
 116
 117                 scope->current_set = set_exp;
 118                 scope->cb_decl = cb->decl;
 119
 120                 if (!psi_set_exp_validate(data, set_exp, scope)) {
 121                         scope->cb_decl = NULL;
 122                         scope->current_set = parent_set;
 123                         return false;
 124                 }
 125                 scope->cb_decl = NULL;
 126                 scope->current_set = parent_set;
 127         }
 128
 129         return true;
 130 }
 131
 132 void psi_let_callback_dump(struct psi_dump *dump, struct psi_let_callback *callback,
 133                 unsigned level)
 134 {
 135         PSI_DUMP(dump, "callback(");
 136         if (callback->cb_args) {
 137                 size_t i = 0;
 138                 struct psi_decl_var *cb_arg;
 139
 140                 while (psi_plist_get(callback->cb_args, i++, &cb_arg)) {
 141                         if (i > 1) {
 142                                 PSI_DUMP(dump, ", ");
 143                         }
 144                         psi_decl_var_dump(dump, cb_arg);
 145                 }
 146         }
 147         PSI_DUMP(dump, ") as %s(%s(",
 148                         callback->func->name->val,
 149                         callback->func->var->name->val);
 150
 151         if (callback->args) {
 152                 size_t i = 0, last = psi_plist_count(callback->args);
 153                 struct psi_set_exp *set;
 154
 155                 PSI_DUMP(dump, "\n");
 156                 ++level;
 157                 while (psi_plist_get(callback->args, i++, &set)) {
 158                         psi_set_exp_dump(dump, set, level, i == last);
 159                         PSI_DUMP(dump, "\n");
 160                 }
 161                 --level;
 162                 PSI_DUMP(dump, "%s", psi_t_indent(level));
 163         }
 164         PSI_DUMP(dump, "))");
 165 }