Decode.cpp

   1 /* Cycript - The Truly Universal Scripting Language
   2  * Copyright (C) 2009-2016  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include <sstream>
  23
  24 #include "Decode.hpp"
  25 #include "Replace.hpp"
  26
  27 namespace sig {
  28
  29 template <>
  30 CYType *Primitive<bool>::Decode(CYPool &pool) const {
  31     return $ CYType($ CYTypeVariable("bool"));
  32 }
  33
  34 template <>
  35 CYType *Primitive<char>::Decode(CYPool &pool) const {
  36     return $ CYType($ CYTypeCharacter(CYTypeNeutral));
  37 }
  38
  39 template <>
  40 CYType *Primitive<double>::Decode(CYPool &pool) const {
  41     return $ CYType($ CYTypeVariable("double"));
  42 }
  43
  44 template <>
  45 CYType *Primitive<float>::Decode(CYPool &pool) const {
  46     return $ CYType($ CYTypeVariable("float"));
  47 }
  48
  49 template <>
  50 CYType *Primitive<signed char>::Decode(CYPool &pool) const {
  51     return $ CYType($ CYTypeCharacter(CYTypeSigned));
  52 }
  53
  54 template <>
  55 CYType *Primitive<signed int>::Decode(CYPool &pool) const {
  56     return $ CYType($ CYTypeIntegral(CYTypeSigned, 1));
  57 }
  58
  59 #ifdef __SIZEOF_INT128__
  60 template <>
  61 CYType *Primitive<signed __int128>::Decode(CYPool &pool) const {
  62     return $ CYType($ CYTypeInt128(CYTypeSigned));
  63 }
  64 #endif
  65
  66 template <>
  67 CYType *Primitive<signed long int>::Decode(CYPool &pool) const {
  68     return $ CYType($ CYTypeIntegral(CYTypeSigned, 2));
  69 }
  70
  71 template <>
  72 CYType *Primitive<signed long long int>::Decode(CYPool &pool) const {
  73     return $ CYType($ CYTypeIntegral(CYTypeSigned, 3));
  74 }
  75
  76 template <>
  77 CYType *Primitive<signed short int>::Decode(CYPool &pool) const {
  78     return $ CYType($ CYTypeIntegral(CYTypeSigned, 0));
  79 }
  80
  81 template <>
  82 CYType *Primitive<unsigned char>::Decode(CYPool &pool) const {
  83     return $ CYType($ CYTypeCharacter(CYTypeUnsigned));
  84 }
  85
  86 template <>
  87 CYType *Primitive<unsigned int>::Decode(CYPool &pool) const {
  88     return $ CYType($ CYTypeIntegral(CYTypeUnsigned, 1));
  89 }
  90
  91 #ifdef __SIZEOF_INT128__
  92 template <>
  93 CYType *Primitive<unsigned __int128>::Decode(CYPool &pool) const {
  94     return $ CYType($ CYTypeInt128(CYTypeUnsigned));
  95 }
  96 #endif
  97
  98 template <>
  99 CYType *Primitive<unsigned long int>::Decode(CYPool &pool) const {
 100     return $ CYType($ CYTypeIntegral(CYTypeUnsigned, 2));
 101 }
 102
 103 template <>
 104 CYType *Primitive<unsigned long long int>::Decode(CYPool &pool) const {
 105     return $ CYType($ CYTypeIntegral(CYTypeUnsigned, 3));
 106 }
 107
 108 template <>
 109 CYType *Primitive<unsigned short int>::Decode(CYPool &pool) const {
 110     return $ CYType($ CYTypeIntegral(CYTypeUnsigned, 0));
 111 }
 112
 113 CYType *Void::Decode(CYPool &pool) const {
 114     return $ CYType($ CYTypeVoid());
 115 }
 116
 117 CYType *Unknown::Decode(CYPool &pool) const {
 118     return $ CYType($ CYTypeError());
 119 }
 120
 121 CYType *String::Decode(CYPool &pool) const {
 122     return $ CYType($ CYTypeCharacter(CYTypeNeutral), $ CYTypePointerTo());
 123 }
 124
 125 #ifdef CY_OBJECTIVEC
 126 CYType *Meta::Decode(CYPool &pool) const {
 127     return $ CYType($ CYTypeVariable("Class"));
 128 }
 129
 130 CYType *Selector::Decode(CYPool &pool) const {
 131     return $ CYType($ CYTypeVariable("SEL"));
 132 }
 133 #endif
 134
 135 CYType *Bits::Decode(CYPool &pool) const {
 136     _assert(false);
 137 }
 138
 139 CYType *Pointer::Decode(CYPool &pool) const {
 140     return CYDecodeType(pool, &type)->Modify($ CYTypePointerTo());
 141 }
 142
 143 CYType *Array::Decode(CYPool &pool) const {
 144     return CYDecodeType(pool, &type)->Modify($ CYTypeArrayOf($D(size)));
 145 }
 146
 147 #ifdef CY_OBJECTIVEC
 148 CYType *Object::Decode(CYPool &pool) const {
 149     if (name == NULL)
 150         return $ CYType($ CYTypeVariable("id"));
 151     else
 152         return $ CYType($ CYTypeVariable(name), $ CYTypePointerTo());
 153 }
 154 #endif
 155
 156 CYType *Enum::Decode(CYPool &pool) const {
 157     CYEnumConstant *values(NULL);
 158     for (size_t i(count); i != 0; --i)
 159         values = $ CYEnumConstant($I(pool.strdup(constants[i - 1].name)), $D(constants[i - 1].value), values);
 160     CYIdentifier *identifier(name == NULL ? NULL : $I(name));
 161     CYType *typed(type.Decode(pool));
 162     _assert(typed->modifier_ == NULL);
 163     return $ CYType($ CYTypeEnum(identifier, typed->specifier_, values));
 164 }
 165
 166 CYType *Aggregate::Decode(CYPool &pool) const {
 167     _assert(!overlap);
 168
 169     if (signature.count == _not(size_t)) {
 170         _assert(name != NULL);
 171         return $ CYType($ CYTypeReference(CYTypeReferenceStruct, $I($pool.strdup(name))));
 172     }
 173
 174     CYTypeStructField *fields(NULL);
 175     for (size_t i(signature.count); i != 0; --i) {
 176         sig::Element &element(signature.elements[i - 1]);
 177         fields = $ CYTypeStructField(CYDecodeType(pool, element.type), element.name == NULL ? NULL : $I(element.name), fields);
 178     }
 179     CYIdentifier *identifier(name == NULL ? NULL : $I(name));
 180     return $ CYType($ CYTypeStruct(identifier, $ CYStructTail(fields)));
 181 }
 182
 183 CYType *Callable::Decode(CYPool &pool) const {
 184     _assert(signature.count != 0);
 185     CYTypedParameter *parameters(NULL);
 186     for (size_t i(signature.count - 1); i != 0; --i)
 187         parameters = $ CYTypedParameter(CYDecodeType(pool, signature.elements[i].type), NULL, parameters);
 188     return Modify(pool, CYDecodeType(pool, signature.elements[0].type), parameters);
 189 }
 190
 191 CYType *Function::Modify(CYPool &pool, CYType *result, CYTypedParameter *parameters) const {
 192     return result->Modify($ CYTypeFunctionWith(variadic, parameters));
 193 }
 194
 195 #ifdef CY_OBJECTIVEC
 196 CYType *Block::Modify(CYPool &pool, CYType *result, CYTypedParameter *parameters) const {
 197     return result->Modify($ CYTypeBlockWith(parameters));
 198 }
 199
 200 CYType *Block::Decode(CYPool &pool) const {
 201     if (signature.count == 0)
 202         return $ CYType($ CYTypeVariable("NSBlock"), $ CYTypePointerTo());
 203     return Callable::Decode(pool);
 204 }
 205 #endif
 206
 207 }
 208
 209 CYType *CYDecodeType(CYPool &pool, struct sig::Type *type) {
 210     CYType *typed(type->Decode(pool));
 211     if ((type->flags & JOC_TYPE_CONST) != 0) {
 212         if (dynamic_cast<sig::String *>(type) != NULL)
 213             typed->modifier_ = $ CYTypeConstant(typed->modifier_);
 214         else
 215             typed = typed->Modify($ CYTypeConstant());
 216     }
 217     return typed;
 218 }