git.m6w6.name Git - m6w6/ext-psi/blob - src/types/return_stmt.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
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34
  35 #include "data.h"
  36
  37 return_stmt *init_return_stmt(set_value *val) {
  38         return_stmt *ret = calloc(1, sizeof(*ret));
  39         ret->set = val;
  40         return ret;
  41 }
  42
  43 void free_return_stmt(return_stmt *ret) {
  44         if (ret->token) {
  45                 free(ret->token);
  46         }
  47         free_set_value(ret->set);
  48         free(ret);
  49 }
  50
  51 void dump_return_stmt(int fd, return_stmt *ret) {
  52         dprintf(fd, "\treturn ");
  53         dump_set_value(fd, ret->set, 1, 0);
  54 }
  55
  56 static inline decl *locate_impl_decl(decls *decls, return_stmt *ret) {
  57         if (decls) {
  58                 size_t i;
  59
  60                 for (i = 0; i < decls->count; ++i) {
  61                         if (!strcmp(decls->list[i]->func->var->name, ret->set->vars->vars[0]->name)) {
  62                                 ret->decl = decls->list[i]->func;
  63                                 return decls->list[i];
  64                         }
  65                 }
  66         }
  67
  68         return NULL;
  69 }
  70
  71 int validate_return_stmt(struct psi_data *data, impl *impl) {
  72         return_stmt *ret;
  73
  74         /* we must have exactly one ret stmt delcaring the native func to call */
  75         /* and which type cast to apply */
  76         if (impl->stmts->ret.count != 1) {
  77                 if (impl->stmts->ret.count > 1) {
  78                         data->error(data, impl->stmts->ret.list[1]->token, PSI_WARNING,
  79                                         "Too many `return` statements for implmentation %s;"
  80                                         " found %zu, exactly one is needed",
  81                                         impl->func->name, impl->stmts->ret.count);
  82                 } else {
  83                         data->error(data, impl->func->token, PSI_WARNING,
  84                                         "Missing `return` statement for implementation %s",
  85                                         impl->func->name);
  86                 }
  87                 return 0;
  88         }
  89
  90         ret = impl->stmts->ret.list[0];
  91
  92         if (!(impl->decl = locate_impl_decl(data->decls, ret))) {
  93                 data->error(data, ret->token, PSI_WARNING,
  94                                 "Missing declaration '%s' for `return` statment for implementation %s",
  95                                 ret->set->vars->vars[0]->name, impl->func->name);
  96                 return 0;
  97         }
  98
  99         if (!validate_set_value(data, ret->set, 1, &ret->decl, impl->decl->args ? (int) impl->decl->args->count : 0, impl->decl->args ? impl->decl->args->args : NULL, 0)) {
 100                 return 0;
 101         }
 102
 103         //impl->decl->impl = impl;
 104
 105         return 1;
 106 }