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                 psi_plist_free(cb->cb_args);
  48                 if (cb->token) {
  49                         free(cb->token);
  50                 }
  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, cb_decl->func->var->name);
  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_exp *exp,
  80                 struct psi_let_callback *cb, struct psi_impl *impl)
  81 {
  82         size_t i = 0;
  83         struct psi_decl_type *cb_type;
  84         struct psi_decl_var *cb_var = exp->var;
  85         struct psi_set_exp *set_exp;
  86
  87         cb_type = psi_decl_type_get_real(cb_var->arg->type);
  88         if (cb_type->type != PSI_T_FUNCTION) {
  89                 data->error(data, cb_var->token, PSI_WARNING,
  90                                 "Expected a function: %s",
  91                                 cb_var->name);
  92                 return false;
  93         }
  94         cb->decl = cb_type->real.func;
  95
  96         if (!psi_decl_validate_nodl(data, cb->decl,  NULL /* FIXME type_stack */)) {
  97                 return false;
  98         }
  99         if (!psi_let_callback_validate_decl_args(data, cb, cb->decl, impl)) {
 100                 return false;
 101         }
 102         while (psi_plist_get(cb->args, i++, &set_exp)) {
 103                 struct psi_decl_var *cb_var, *dvar = psi_set_exp_get_decl_var(set_exp);
 104
 105                 if (psi_plist_get(cb->cb_args, i - 1, &cb_var)) {
 106                         dvar->arg = cb_var->arg;
 107                 }
 108
 109                 if (!psi_set_exp_validate(data, set_exp, impl, cb->decl)) {
 110                         return false;
 111                 }
 112         }
 113
 114         return true;
 115 }
 116
 117 void psi_let_callback_dump(int fd, struct psi_let_callback *callback,
 118                 unsigned level)
 119 {
 120         dprintf(fd, "callback(");
 121         if (callback->cb_args) {
 122                 size_t i = 0;
 123                 struct psi_decl_var *cb_arg;
 124
 125                 while (psi_plist_get(callback->cb_args, i++, &cb_arg)) {
 126                         if (i > 1) {
 127                                 dprintf(fd, ", ");
 128                         }
 129                         psi_decl_var_dump(fd, cb_arg);
 130                 }
 131         }
 132         dprintf(fd, ") as %s(%s(",
 133                         callback->func->name,
 134                         callback->func->var->name);
 135
 136         if (callback->args) {
 137                 size_t i = 0, last = psi_plist_count(callback->args);
 138                 struct psi_set_exp *set;
 139
 140                 dprintf(fd, "\n");
 141                 ++level;
 142                 while (psi_plist_get(callback->args, i++, &set)) {
 143                         psi_set_exp_dump(fd, set, level, i == last);
 144                         dprintf(fd, "\n");
 145                 }
 146                 --level;
 147                 dprintf(fd, "%s", psi_t_indent(level));
 148         }
 149         dprintf(fd, "))");
 150 }