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 #include "php_psi_stdinc.h"
  27 #include "data.h"
  28
  29 struct psi_let_callback *psi_let_callback_init(struct psi_let_func *func,
  30                 struct psi_plist *args, struct psi_plist *cb_args)
  31 {
  32         struct psi_let_callback *cb = pecalloc(1, sizeof(*cb), 1);
  33         cb->func = func;
  34         cb->args = args;
  35         cb->cb_args = cb_args;
  36         return cb;
  37 }
  38
  39 void psi_let_callback_free(struct psi_let_callback **cb_ptr)
  40 {
  41         if (*cb_ptr) {
  42                 struct psi_let_callback *cb = *cb_ptr;
  43
  44                 *cb_ptr = NULL;
  45                 psi_let_func_free(&cb->func);
  46                 psi_plist_free(cb->args);
  47                 if (cb->cb_args) {
  48                         psi_plist_free(cb->cb_args);
  49                 }
  50                 psi_token_free(&cb->token);
  51                 free(cb);
  52         }
  53 }
  54
  55
  56 static inline bool psi_let_callback_validate_decl_args(struct psi_data *data,
  57                 struct psi_let_callback *cb, struct psi_decl *cb_decl,
  58                 struct psi_impl *impl)
  59 {
  60         size_t i;
  61         struct psi_decl_var *call_arg;
  62
  63         if (cb->cb_args) {
  64                 if (psi_plist_count(cb->cb_args) != psi_plist_count(cb_decl->args)) {
  65                         data->error(data, cb->token, PSI_WARNING,
  66                                         "Argument count of callback statement of implementation '%s'"
  67                                         "does not match argument count of callback declaration '%s'",
  68                                         impl->func->name->val, cb_decl->func->var->name->val);
  69                         return false;
  70                 }
  71
  72                 for (i = 0; psi_plist_get(cb->cb_args, i, &call_arg); ++i) {
  73                         psi_plist_get(cb_decl->args, i, &call_arg->arg);
  74                 }
  75         }
  76         return true;
  77 }
  78
  79 bool psi_let_callback_validate(struct psi_data *data, struct psi_let_callback *cb,
  80                 struct psi_validate_scope *scope)
  81 {
  82         size_t i = 0;
  83         struct psi_decl_type *cb_type;
  84         struct psi_let_exp *exp = scope->current_let;
  85         struct psi_decl_var *cb_var = exp->var;
  86         struct psi_set_exp *set_exp, *parent_set = scope->current_set;
  87
  88         cb_type = psi_decl_type_get_real(cb_var->arg->type);
  89         if (cb_type->type != PSI_T_FUNCTION) {
  90                 data->error(data, cb_var->token, PSI_WARNING,
  91                                 "Expected a function: %s",
  92                                 cb_var->name->val);
  93                 return false;
  94         }
  95         cb->decl = cb_type->real.func;
  96
  97         if (!psi_decl_validate_nodl(data, cb->decl, scope)) {
  98                 return false;
  99         }
 100         if (!psi_let_callback_validate_decl_args(data, cb, cb->decl, scope->impl)) {
 101                 return false;
 102         }
 103         while (psi_plist_get(cb->args, i++, &set_exp)) {
 104                 if (cb->cb_args) {
 105                         struct psi_decl_var *cb_var;
 106
 107                         if (psi_plist_get(cb->cb_args, i - 1, &cb_var)) {
 108                                 struct psi_decl_var *dvar = psi_set_exp_get_decl_var(set_exp);
 109                                 dvar->arg = cb_var->arg;
 110                         }
 111                 }
 112
 113                 scope->current_set = set_exp;
 114                 scope->cb_decl = cb->decl;
 115
 116                 if (!psi_set_exp_validate(data, set_exp, scope)) {
 117                         scope->cb_decl = NULL;
 118                         scope->current_set = parent_set;
 119                         return false;
 120                 }
 121                 scope->cb_decl = NULL;
 122                 scope->current_set = parent_set;
 123         }
 124
 125         return true;
 126 }
 127
 128 void psi_let_callback_dump(int fd, struct psi_let_callback *callback,
 129                 unsigned level)
 130 {
 131         dprintf(fd, "callback(");
 132         if (callback->cb_args) {
 133                 size_t i = 0;
 134                 struct psi_decl_var *cb_arg;
 135
 136                 while (psi_plist_get(callback->cb_args, i++, &cb_arg)) {
 137                         if (i > 1) {
 138                                 dprintf(fd, ", ");
 139                         }
 140                         psi_decl_var_dump(fd, cb_arg);
 141                 }
 142         }
 143         dprintf(fd, ") as %s(%s(",
 144                         callback->func->name->val,
 145                         callback->func->var->name->val);
 146
 147         if (callback->args) {
 148                 size_t i = 0, last = psi_plist_count(callback->args);
 149                 struct psi_set_exp *set;
 150
 151                 dprintf(fd, "\n");
 152                 ++level;
 153                 while (psi_plist_get(callback->args, i++, &set)) {
 154                         psi_set_exp_dump(fd, set, level, i == last);
 155                         dprintf(fd, "\n");
 156                 }
 157                 --level;
 158                 dprintf(fd, "%s", psi_t_indent(level));
 159         }
 160         dprintf(fd, "))");
 161 }