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