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:
 168                 switch (psi_decl_type_get_real(set_var->arg->type)->type) {
 169                 case PSI_T_UNION:
 170                 case PSI_T_STRUCT:
 171                         break;
 172                 default:
 173                         data->error(data, func->token, PSI_WARNING,
 174                                         "Expected struct or union type for complex to_array()"
 175                                         " cast expression, got '%s'",
 176                                         set_var->arg->type->name);
 177                         return false;
 178                 }
 179                 func->handler = psi_set_to_array;
 180                 return true;
 181         }
 182 }
 183
 184 static inline bool psi_set_func_validate_to_recursive(struct psi_data *data,
 185                 struct psi_set_func *func, struct psi_set_exp *set,
 186                 struct psi_impl *impl)
 187 {
 188         if (!set->outer
 189                         || set->outer->kind != PSI_SET_FUNC
 190                         || set->outer->data.func->type != PSI_T_TO_ARRAY) {
 191                 data->error(data, func->token, PSI_WARNING,
 192                                 "Expected to_array() as parent to recursion in `set` statement"
 193                                 " of implementation '%s'",
 194                                 impl->func->name);
 195                 return false;
 196         }
 197
 198         func->handler = psi_set_to_recursive;
 199         set->inner = set->outer->inner;
 200         // FIXME validate recursive type
 201         return true;
 202 }
 203
 204 bool psi_set_func_validate(struct psi_data *data, struct psi_set_func *func,
 205                 struct psi_set_exp *set, struct psi_impl *impl, struct psi_decl *cb_decl)
 206 {
 207         if (!psi_decl_var_validate(data, func->var, NULL, impl->decl, NULL, set)
 208                         && !psi_decl_var_validate(data, func->var, NULL, cb_decl, NULL, NULL)
 209                         && !psi_impl_get_temp_let_arg(impl, func->var)) {
 210                 data->error(data, func->var->token, PSI_WARNING,
 211                                 "Unknown variable '%s' in implementation %s",
 212                                 func->var->name, impl->func->name);
 213                 return false;
 214         }
 215
 216         if (set->outer) {
 217                 if (set->outer->kind != PSI_SET_FUNC) {
 218                         data->error(data, func->token, PSI_WARNING,
 219                                         "Unexpected sub-expression, expected to_type() cast");
 220                         return false;
 221                 }
 222         }
 223
 224         if (func->inner && (!set->outer || set->outer->inner != func->inner)) {
 225
 226                 size_t i = 0;
 227                 struct psi_set_exp *inner;
 228
 229                 while (psi_plist_get(func->inner, i++, &inner)) {
 230                         struct psi_decl_var *sub_var;
 231                         struct psi_plist *sub_args;
 232
 233                         inner->outer = set;
 234
 235                         sub_var = psi_set_exp_get_decl_var(inner);
 236                         sub_args = psi_decl_type_get_args(func->var->arg->type, NULL);
 237                         if (sub_var && sub_args && !psi_decl_arg_get_by_var(sub_var, sub_args, NULL)) {
 238                                 /* remove expr for portability with different struct members */
 239                                 psi_plist_del(func->inner, --i, NULL);
 240                                 psi_set_exp_free(&inner);
 241                         } else if (!psi_set_exp_validate(data, inner, impl, cb_decl)) {
 242                                 /* remove exp for portability */
 243                                 psi_plist_del(func->inner, --i, NULL);
 244                         }
 245                 }
 246         }
 247
 248         switch (func->type) {
 249         case PSI_T_VOID:
 250                 func->handler = psi_set_void;
 251                 break;
 252         case PSI_T_ZVAL:
 253                 func->handler = psi_set_zval;
 254                 break;
 255         case PSI_T_TO_BOOL:
 256                 func->handler = psi_set_to_bool;
 257                 break;
 258         case PSI_T_TO_INT:
 259                 func->handler = psi_set_to_int;
 260                 break;
 261         case PSI_T_TO_FLOAT:
 262                 func->handler = psi_set_to_float;
 263                 break;
 264         case PSI_T_TO_OBJECT:
 265                 func->handler = psi_set_to_object;
 266                 break;
 267         case PSI_T_TO_STRING:
 268                 if (!psi_set_func_validate_to_string(data, func, set, impl)) {
 269                         return false;
 270                 }
 271                 break;
 272         case PSI_T_TO_ARRAY:
 273                 if (!psi_set_func_validate_to_array(data, func, set, impl)) {
 274                         return false;
 275                 }
 276                 break;
 277         default:
 278                 data->error(data, func->token, PSI_WARNING,
 279                                 "Unknown cast '%s' in `set` statement of implementation '%s'",
 280                                 func->name, impl->func->name);
 281                 return false;
 282         }
 283
 284         return true;
 285 }