git.m6w6.name Git - m6w6/ext-psi/blob - src/types/let_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 let_stmt *init_let_stmt(let_val *val) {
  38         let_stmt *let = calloc(1, sizeof(*let));
  39         let->val = val;
  40
  41         return let;
  42 }
  43
  44 void free_let_stmt(let_stmt *stmt) {
  45         if (stmt->val) {
  46                 free_let_val(stmt->val);
  47         }
  48         if (stmt->token) {
  49                 free(stmt->token);
  50         }
  51         free(stmt);
  52 }
  53
  54 void dump_let_stmt(int fd, let_stmt *let) {
  55         dprintf(fd, "\t%s ", let->val->kind == PSI_LET_TMP ? "temp" : "let");
  56         dump_let_val(fd, let->val, 1, 1);
  57 }
  58
  59 int validate_let_stmts(struct psi_data *data, impl *impl) {
  60         size_t i, j;
  61         /* we can have multiple let stmts */
  62
  63         /* check that we have a decl arg and impl arg for every let stmt */
  64         for (i = 0; i < impl->stmts->let.count; ++i) {
  65                 let_stmt *let = impl->stmts->let.list[i];
  66                 decl_var *let_var;
  67                 impl_var *let_ivar = NULL;
  68
  69                 if (let->val && let->val->kind == PSI_LET_TMP) {
  70                         let_var = let->val->data.var;
  71                 } else {
  72                         let_var = let->val->var;
  73                 }
  74
  75                 if (!locate_decl_var_arg(let_var, impl->decl->args, impl->decl->func)) {
  76                         data->error(data, let_var->token, PSI_WARNING, "Unknown variable '%s' in `let` statement"
  77                                         " of implementation '%s'", let_var->name, impl->func->name);
  78                         return 0;
  79                 }
  80                 switch (let->val->kind) {
  81                 case PSI_LET_CALLBACK:
  82                         let_ivar = let->val->data.callback->func->var;
  83                         break;
  84                 case PSI_LET_FUNC:
  85                         let_ivar = let->val->data.func->var;
  86                         break;
  87                 default:
  88                         break;
  89                 }
  90                 if (let_ivar && !locate_impl_var_arg(let_ivar, impl->func->args)) {
  91                         data->error(data, let_var->token, PSI_WARNING, "Unknown variable '%s' in `let` statement"
  92                                         " of implementation '%s'", let_ivar->name, impl->func->name);
  93                         return 0;
  94                 }
  95
  96                 if (!validate_let_val(data, let->val, let->val->var, impl)) {
  97                         return 0;
  98                 }
  99         }
 100         /* check that we have a let stmt for every decl arg */
 101         if (impl->decl->args) for (i = 0; i < impl->decl->args->count; ++i) {
 102                 decl_arg *darg = impl->decl->args->args[i];
 103                 int check = 0;
 104
 105                 for (j = 0; j < impl->stmts->let.count; ++j) {
 106                         let_stmt *let = impl->stmts->let.list[j];
 107
 108                         if (!strcmp(let->val->var->name, darg->var->name)) {
 109                                 check = 1;
 110                                 break;
 111                         }
 112                 }
 113                 if (!check) {
 114                         data->error(data, impl->func->token, PSI_WARNING,
 115                                         "Missing `let` statement for arg '%s %.*s%s'"
 116                                         " of declaration '%s' for implementation '%s'",
 117                                         darg->type->name, (int) darg->var->pointer_level, "*****",
 118                                         darg->var->name, impl->decl->func->var->name, impl->func->name);
 119                         return 0;
 120                 }
 121         }
 122
 123         return 1;
 124 }