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_exp *exp,
  82                 struct psi_let_callback *cb, struct psi_impl *impl)
  83 {
  84         size_t i = 0;
  85         struct psi_decl_type *cb_type;
  86         struct psi_decl_var *cb_var = exp->var;
  87         struct psi_set_exp *set_exp;
  88
  89         cb_type = psi_decl_type_get_real(cb_var->arg->type);
  90         if (cb_type->type != PSI_T_FUNCTION) {
  91                 data->error(data, cb_var->token, PSI_WARNING,
  92                                 "Expected a function: %s",
  93                                 cb_var->name);
  94                 return false;
  95         }
  96         cb->decl = cb_type->real.func;
  97
  98         if (!psi_decl_validate_nodl(data, cb->decl,  NULL /* FIXME type_stack */)) {
  99                 return false;
 100         }
 101         if (!psi_let_callback_validate_decl_args(data, cb, cb->decl, impl)) {
 102                 return false;
 103         }
 104         while (psi_plist_get(cb->args, i++, &set_exp)) {
 105                 if (cb->cb_args) {
 106                         struct psi_decl_var *cb_var;
 107
 108                         if (psi_plist_get(cb->cb_args, i - 1, &cb_var)) {
 109                                 struct psi_decl_var *dvar = psi_set_exp_get_decl_var(set_exp);
 110                                 dvar->arg = cb_var->arg;
 111                         }
 112                 }
 113                 if (!psi_set_exp_validate(data, set_exp, impl, cb->decl)) {
 114                         return false;
 115                 }
 116         }
 117
 118         return true;
 119 }
 120
 121 void psi_let_callback_dump(int fd, struct psi_let_callback *callback,
 122                 unsigned level)
 123 {
 124         dprintf(fd, "callback(");
 125         if (callback->cb_args) {
 126                 size_t i = 0;
 127                 struct psi_decl_var *cb_arg;
 128
 129                 while (psi_plist_get(callback->cb_args, i++, &cb_arg)) {
 130                         if (i > 1) {
 131                                 dprintf(fd, ", ");
 132                         }
 133                         psi_decl_var_dump(fd, cb_arg);
 134                 }
 135         }
 136         dprintf(fd, ") as %s(%s(",
 137                         callback->func->name,
 138                         callback->func->var->name);
 139
 140         if (callback->args) {
 141                 size_t i = 0, last = psi_plist_count(callback->args);
 142                 struct psi_set_exp *set;
 143
 144                 dprintf(fd, "\n");
 145                 ++level;
 146                 while (psi_plist_get(callback->args, i++, &set)) {
 147                         psi_set_exp_dump(fd, set, level, i == last);
 148                         dprintf(fd, "\n");
 149                 }
 150                 --level;
 151                 dprintf(fd, "%s", psi_t_indent(level));
 152         }
 153         dprintf(fd, "))");
 154 }