git.m6w6.name Git - m6w6/ext-psi/blob - src/types/let_func.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 #include <string.h>
  35 #include <assert.h>
  36
  37 #include "data.h"
  38 #include "marshal.h"
  39
  40 let_func *init_let_func(token_t type, const char *name, impl_var *var) {
  41         let_func *func = calloc(1, sizeof(*func));
  42         func->type = type;
  43         func->name = strdup(name);
  44         func->var = var;
  45         return func;
  46 }
  47
  48 void free_let_func(let_func *func) {
  49         free_impl_var(func->var);
  50         free(func->name);
  51         if (func->inner) {
  52                 free_let_vals(func->inner);
  53         }
  54         free(func);
  55 }
  56
  57 void dump_let_func(int fd, let_func *func, unsigned level) {
  58         dprintf(fd, "%s(%s", func->name, func->var->name);
  59
  60         if (func->inner) {
  61                 size_t i;
  62
  63                 dprintf(fd, ",");
  64                 for (i = 0; i < func->inner->count; ++i) {
  65                         dprintf(fd, "\n");
  66                         dump_let_val(fd, func->inner->vals[i], level+1, i+1 == func->inner->count);
  67                 }
  68                 dprintf(fd, "\n");
  69                 dprintf(fd, "%s", psi_t_indent(level));
  70         }
  71         dprintf(fd, ")");
  72 }
  73
  74 static inline int validate_let_func_type(struct psi_data *data, let_func *func, impl *impl) {
  75         switch (func->type) {
  76         case PSI_T_BOOLVAL:
  77         case PSI_T_INTVAL:
  78         case PSI_T_FLOATVAL:
  79         case PSI_T_STRVAL:
  80         case PSI_T_STRLEN:
  81         case PSI_T_PATHVAL:
  82         case PSI_T_ARRVAL:
  83         case PSI_T_OBJVAL:
  84         case PSI_T_ZVAL:
  85         case PSI_T_VOID:
  86                 return 1;
  87         default:
  88                 data->error(data, func->var->token, PSI_WARNING,
  89                                 "Unknown `let` cast function '%s' of implementation '%s'",
  90                                 func->name, impl->func->name);
  91                 return 0;
  92         }
  93 }
  94
  95 static inline int validate_let_func_inner(struct psi_data *data, let_func *func, decl_var *let_var, impl *impl) {
  96         if (func->inner) {
  97                 size_t i;
  98                 decl_type *var_typ;
  99                 decl_args *sub_args = extract_decl_type_args(let_var->arg->type, &var_typ);
 100
 101                 if (!sub_args) {
 102                         data->error(data, let_var->token, PSI_WARNING,
 103                                         "Inner let statement's values must refer to a structure type,"
 104                                         " got '%s' for '%s'",
 105                                         var_typ->name, let_var->name);
 106                         return 0;
 107                 }
 108
 109                 for (i = 0; i < func->inner->count; ++i) {
 110                         let_val *inner = func->inner->vals[i];
 111                         let_val *outer = func->outer;
 112                         const char *name = locate_let_val_varname(inner);
 113                         decl_arg *sub_arg;
 114
 115                         if (name) {
 116                                 sub_arg = locate_decl_arg(sub_args, name);
 117                         }
 118                         if (!name || !sub_arg) {
 119                                 data->error(data, let_var->token, PSI_WARNING,
 120                                                 "Unknown variable '%s' of '%s'",
 121                                                 name, var_typ->real.strct->name);
 122                                 return 0;
 123                         }
 124                         if (!validate_let_val(data, inner, sub_arg->var, impl)) {
 125                                 return 0;
 126                         }
 127                 }
 128         }
 129         return 1;
 130 }
 131
 132 int validate_let_func(struct psi_data *data, let_func *func, decl_var *let_var, impl *impl) {
 133         if (func->outer) {
 134
 135         }
 136         if (impl->func->args) {
 137                 locate_impl_var_arg(func->var, impl->func->args);
 138         }
 139         if (!func->var->arg && !func->ref) {
 140                 data->error(data, func->var->token, PSI_WARNING,
 141                                 "Unknown variable '%s%s' of `let` statement"
 142                                 " for cast '%s' of implementation '%s'",
 143                                 *func->var->name == '$' ? "" : "$",
 144                                 func->var->name, func->name, impl->func->name);
 145                 return 0;
 146         }
 147         if (!validate_let_func_type(data, func, impl)) {
 148                 return 0;
 149         }
 150         if (!validate_let_func_inner(data, func, let_var, impl)) {
 151                 return 0;
 152         }
 153         return 1;
 154 }