git.m6w6.name Git - m6w6/ext-psi/blob - src/types/set_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 #include "php_psi_stdinc.h"
  27 #include "data.h"
  28
  29 struct psi_set_func *psi_set_func_init(token_t type, const char *name,
  30                 struct psi_decl_var *var)
  31 {
  32         struct psi_set_func *func = calloc(1, sizeof(*func));
  33
  34         func->type = type;
  35         func->name = strdup(name);
  36         func->var = var;
  37
  38         return func;
  39 }
  40
  41 void psi_set_func_free(struct psi_set_func **func_ptr)
  42 {
  43         if (*func_ptr) {
  44                 struct psi_set_func *func = *func_ptr;
  45
  46                 *func_ptr = NULL;
  47                 if (func->token) {
  48                         free(func->token);
  49                 }
  50                 psi_decl_var_free(&func->var);
  51                 free(func->name);
  52                 free(func);
  53         }
  54 }
  55
  56 void psi_set_func_dump(int fd, struct psi_set_func *func, unsigned level)
  57 {
  58         dprintf(fd, "%s(", func->name);
  59         psi_decl_var_dump(fd, func->var);
  60         dprintf(fd, "\t/* fqn=%s */", func->var->fqn);
  61         if (func->inner && !func->recursive) {
  62                 size_t i = 0, count = psi_plist_count(func->inner);
  63                 struct psi_set_exp *inner;
  64
  65                 dprintf(fd, ",");
  66                 ++level;
  67                 while (psi_plist_get(func->inner, i++, &inner)) {
  68                         dprintf(fd, "\n");
  69                         psi_set_exp_dump(fd, inner, level, i == count);
  70                 }
  71                 --level;
  72         }
  73         if (func->recursive) {
  74                 dprintf(fd, ", ...");
  75         }
  76         if (func->inner && !func->recursive) {
  77                 dprintf(fd, "\n%s", psi_t_indent(level));
  78         }
  79         dprintf(fd, ")");
  80 }
  81
  82 static inline bool psi_set_func_validate_to_string(struct psi_data *data,
  83                 struct psi_set_func *func, struct psi_set_exp *set,
  84                 struct psi_impl *impl)
  85 {
  86         struct psi_set_exp *sub_exp;
  87
  88         psi_plist_get(func->inner, 0, &sub_exp);
  89
  90         switch (psi_plist_count(func->inner)) {
  91         default:
  92                 data->error(data, **(struct psi_token ***) &sub_exp->data, PSI_WARNING,
  93                                 "Unexpected sub-expressions");
  94                 return false;
  95
  96         case 1:
  97                 if (sub_exp->kind != PSI_SET_NUMEXP) {
  98                         data->error(data, **(struct psi_token ***) &sub_exp->data,
  99                                         PSI_WARNING, "Expected numeric expression");
 100                         return false;
 101                 }
 102                 func->handler = psi_set_to_stringl;
 103                 return true;
 104
 105         case 0:
 106                 func->handler = psi_set_to_string;
 107                 return true;
 108         }
 109 }
 110
 111 static inline bool psi_set_func_validate_to_array(struct psi_data *data,
 112                 struct psi_set_func *func, struct psi_set_exp *set,
 113                 struct psi_impl *impl)
 114 {
 115         struct psi_set_exp *sub_exp;
 116         struct psi_decl_var *set_var = psi_set_exp_get_decl_var(set);
 117
 118         switch (psi_plist_count(set->inner)) {
 119         case 0:
 120                 if (func->recursive) {
 121                         func->handler = psi_set_to_recursive;
 122                         set->inner = func->inner = set->outer->inner;
 123                         return true;
 124                 }
 125                 data->error(data, func->token, PSI_WARNING,
 126                                 "Expected sub-expressions in to_array() cast expression");
 127                 return false;
 128
 129         case 1:
 130                 psi_plist_get(set->inner, 0, &sub_exp);
 131                 if (sub_exp->kind != PSI_SET_FUNC) {
 132                         data->error(data, **(struct psi_token ***) &sub_exp->data,
 133                                         PSI_WARNING, "Expected to_type() cast expression");
 134                         return false;
 135                 }
 136                 if (strcmp(set_var->name, psi_set_exp_get_decl_var(sub_exp)->name)) {
 137                         /* no warning, because of ambiguity with a one-field-struct monstrosity */
 138                         goto complex;
 139                 }
 140                 func->handler = psi_set_to_array_simple;
 141                 return true;
 142
 143         case 2:
 144                 psi_plist_get(set->inner, 0, &sub_exp);
 145                 if (sub_exp->kind != PSI_SET_NUMEXP) {
 146                         goto complex;
 147                 }
 148                 psi_plist_get(set->inner, 1, &sub_exp);
 149                 if (sub_exp->kind != PSI_SET_FUNC) {
 150                         data->error(data, **(struct psi_token ***) &sub_exp->data,
 151                                         PSI_WARNING, "Expected to_type() cast expression");
 152                         return false;
 153                 }
 154                 if (strcmp(set_var->name, psi_set_exp_get_decl_var(sub_exp)->name)) {
 155                         data->error(data, **(struct psi_token ***) &sub_exp->data,
 156                                         PSI_WARNING,
 157                                         "Expected %s(%s) cast expression to reference the same"
 158                                         " variable like the outer `set` statement, '%s'",
 159                                         sub_exp->data.func->name,
 160                                         psi_set_exp_get_decl_var(sub_exp)->name, set_var);
 161                         return false;
 162                 }
 163                 func->handler = psi_set_to_array_counted;
 164                 return true;
 165
 166         default:
 167                 complex: switch (psi_decl_type_get_real(set_var->arg->type)->type) {
 168                 case PSI_T_UNION:
 169                 case PSI_T_STRUCT:
 170                         break;
 171                 default:
 172                         data->error(data, func->token, PSI_WARNING,
 173                                         "Expected struct or union type for complex to_array()"
 174                                         " cast expression, got '%s'",
 175                                         set_var->arg->type->name);
 176                         return false;
 177                 }
 178                 func->handler = psi_set_to_array;
 179                 return true;
 180         }
 181 }
 182
 183 static inline bool psi_set_func_validate_to_recursive(struct psi_data *data,
 184                 struct psi_set_func *func, struct psi_set_exp *set,
 185                 struct psi_impl *impl)
 186 {
 187         if (!set->outer
 188                         || set->outer->kind
 189                                         != PSI_SET_FUNC|| set->outer->data.func->type != PSI_T_TO_ARRAY) {
 190                 data->error(data, func->token, PSI_WARNING,
 191                                 "Expected to_array() as parent to recursion in `set` statement"
 192                                 " of implementation '%s'",
 193                                 impl->func->name);
 194                 return false;
 195         }
 196
 197         func->handler = psi_set_to_recursive;
 198         set->inner = set->outer->inner;
 199         // FIXME validate recursive type
 200         return true;
 201 }
 202
 203 bool psi_set_func_validate(struct psi_data *data, struct psi_set_func *func,
 204                 struct psi_set_exp *set, struct psi_impl *impl, struct psi_decl *cb_decl)
 205 {
 206         if (!psi_decl_var_validate(data, func->var, impl->decl, NULL, set)
 207                         && !psi_decl_var_validate(data, func->var, cb_decl, NULL, NULL)
 208                         && !psi_impl_get_temp_let_arg(impl, func->var)) {
 209                 data->error(data, func->var->token, PSI_WARNING,
 210                                 "Unknown variable '%s' in implementation %s",
 211                                 func->var->name, impl->func->name);
 212                 return false;
 213         }
 214
 215         if (set->outer) {
 216                 if (set->outer->kind != PSI_SET_FUNC) {
 217                         data->error(data, func->token, PSI_WARNING,
 218                                         "Unexpected sub-expression, expected to_type() cast");
 219                         return false;
 220                 }
 221         }
 222
 223         if (func->inner && (!set->outer || set->outer->inner != func->inner)) {
 224
 225                 size_t i = 0;
 226                 struct psi_set_exp *inner;
 227
 228                 while (psi_plist_get(func->inner, i++, &inner)) {
 229                         struct psi_decl_var *sub_var;
 230                         struct psi_plist *sub_args;
 231
 232                         inner->outer = set;
 233
 234                         sub_var = psi_set_exp_get_decl_var(inner);
 235                         sub_args = psi_decl_type_get_args(func->var->arg->type, NULL);
 236                         if (sub_var && sub_args && !psi_decl_arg_get_by_var(sub_var, sub_args, NULL)) {
 237                                 /* remove expr for portability with different struct members */
 238                                 psi_plist_del(func->inner, --i, NULL);
 239                                 psi_set_exp_free(&inner);
 240                         } else if (!psi_set_exp_validate(data, inner, impl, cb_decl)) {
 241                                 /* remove exp for portability */
 242                                 psi_plist_del(func->inner, --i, NULL);
 243                         }
 244                 }
 245         }
 246
 247         switch (func->type) {
 248         case PSI_T_VOID:
 249                 func->handler = psi_set_void;
 250                 break;
 251         case PSI_T_ZVAL:
 252                 func->handler = psi_set_zval;
 253                 break;
 254         case PSI_T_TO_BOOL:
 255                 func->handler = psi_set_to_bool;
 256                 break;
 257         case PSI_T_TO_INT:
 258                 func->handler = psi_set_to_int;
 259                 break;
 260         case PSI_T_TO_FLOAT:
 261                 func->handler = psi_set_to_float;
 262                 break;
 263         case PSI_T_TO_OBJECT:
 264                 func->handler = psi_set_to_object;
 265                 break;
 266         case PSI_T_TO_STRING:
 267                 if (!psi_set_func_validate_to_string(data, func, set, impl)) {
 268                         return false;
 269                 }
 270                 break;
 271         case PSI_T_TO_ARRAY:
 272                 if (!psi_set_func_validate_to_array(data, func, set, impl)) {
 273                         return false;
 274                 }
 275                 break;
 276         case PSI_T_ELLIPSIS:
 277                 abort();
 278                 if (!psi_set_func_validate_to_recursive(data, func, set, impl)) {
 279                         return false;
 280                 }
 281                 break;
 282         default:
 283                 data->error(data, func->token, PSI_WARNING,
 284                                 "Unknown cast '%s' in `set` statement of implementation '%s'",
 285                                 func->name, impl->func->name);
 286                 return false;
 287         }
 288
 289         return true;
 290 }