ObjectiveC/Replace.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  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 "Replace.hpp"
  25
  26 #include "ObjectiveC/Syntax.hpp"
  27
  28 static CYExpression *MessageType(CYContext &context, CYTypedIdentifier *type, CYMessageParameter *next, CYExpression *extra = NULL) {
  29     CYExpression *left($C0($M(type->Replace(context), $S("toString"))));
  30     if (extra != NULL)
  31         left = $ CYAdd(left, extra);
  32
  33     if (next == NULL || next->type_ == NULL)
  34         return left;
  35
  36     CYExpression *right(next->TypeSignature(context));
  37     if (right == NULL)
  38         return NULL;
  39
  40     return $ CYAdd(left, right);
  41 }
  42
  43 CYStatement *CYCategory::Replace(CYContext &context) {
  44     CYVariable *cyc($V("$cyc")), *cys($V("$cys"));
  45
  46     return $E($C1($F(NULL, $P6($L("$cys"), $L("$cyp"), $L("$cyc"), $L("$cyn"), $L("$cyt"), $L("$cym")), $$->*
  47         $E($ CYAssign($V("$cyp"), $C1($V("object_getClass"), cys)))->*
  48         $E($ CYAssign(cyc, cys))->*
  49         $E($ CYAssign($V("$cym"), $C1($V("object_getClass"), cyc)))->*
  50         messages_->Replace(context, true)
  51     ), name_->ClassName(context, true)));
  52 }
  53
  54 CYStatement *CYClassStatement::Replace(CYContext &context) {
  55     CYVariable *cyc($V("$cyc")), *cys($V("$cys"));
  56
  57     CYExpression *name(name_->ClassName(context, false));
  58
  59     return $E($C1($F(NULL, $P6($L("$cys"), $L("$cyp"), $L("$cyc"), $L("$cyn"), $L("$cyt"), $L("$cym")), $$->*
  60         $E($ CYAssign($V("$cyp"), $C1($V("object_getClass"), cys)))->*
  61         $E($ CYAssign(cyc, $C3($V("objc_allocateClassPair"), cys, name, $D(0))))->*
  62         $E($ CYAssign($V("$cym"), $C1($V("object_getClass"), cyc)))->*
  63         protocols_->Replace(context)->*
  64         fields_->Replace(context)->*
  65         messages_->Replace(context, false)->*
  66         $E($C1($V("objc_registerClassPair"), cyc))->*
  67         $ CYReturn(cyc)
  68     ), super_ == NULL ? $ CYNull() : super_));
  69 }
  70
  71 CYStatement *CYClassField::Replace(CYContext &context) const { $T(NULL)
  72     CYVariable *cyn($V("$cyn"));
  73     CYVariable *cyt($V("$cyt"));
  74
  75     CYExpression *type($C0($M(typed_->Replace(context), $S("toString"))));
  76
  77     return $ CYBlock($$->*
  78         $E($ CYAssign(cyt, type))->*
  79         $E($ CYAssign(cyn, $N1($V("Type"), cyt)))->*
  80         $E($C5($V("class_addIvar"), $V("$cyc"), $S(typed_->identifier_->Word()), $M(cyn, $S("size")), $M(cyn, $S("alignment")), cyt))->*
  81         next_->Replace(context)
  82     );
  83 }
  84
  85 CYExpression *CYInstanceLiteral::Replace(CYContext &context) {
  86     return $N1($V("Instance"), number_);
  87 }
  88
  89 CYStatement *CYMessage::Replace(CYContext &context, bool replace) const { $T(NULL)
  90     CYVariable *cyn($V("$cyn"));
  91     CYVariable *cyt($V("$cyt"));
  92     CYVariable *self($V("self"));
  93     CYVariable *_class($V(instance_ ? "$cys" : "$cyp"));
  94
  95     return $ CYBlock($$->*
  96         next_->Replace(context, replace)->*
  97         $E($ CYAssign(cyn, parameters_->Selector(context)))->*
  98         $E($ CYAssign(cyt, TypeSignature(context)))->*
  99         $E($C4($V(replace ? "class_replaceMethod" : "class_addMethod"),
 100             $V(instance_ ? "$cyc" : "$cym"),
 101             cyn,
 102             $N2($V("Functor"), $F(NULL, $P2($L("self"), $L("_cmd"), parameters_->Parameters(context)), $$->*
 103                 $ CYVar($L1($L("$cyr", $N2($V("objc_super"), self, _class))))->*
 104                 $ CYReturn($C1($M($F(NULL, NULL, code_.code_), $S("call")), self))
 105             ), cyt),
 106             cyt
 107         ))
 108     );
 109 }
 110
 111 CYExpression *CYMessage::TypeSignature(CYContext &context) const {
 112     return MessageType(context, type_, parameters_, $S("@:"));
 113 }
 114
 115 CYFunctionParameter *CYMessageParameter::Parameters(CYContext &context) const { $T(NULL)
 116     CYFunctionParameter *next(next_->Parameters(context));
 117     return type_ == NULL ? next : $ CYFunctionParameter($ CYDeclaration(type_->identifier_), next);
 118 }
 119
 120 CYSelector *CYMessageParameter::Selector(CYContext &context) const {
 121     return $ CYSelector(SelectorPart(context));
 122 }
 123
 124 CYSelectorPart *CYMessageParameter::SelectorPart(CYContext &context) const { $T(NULL)
 125     CYSelectorPart *next(next_->SelectorPart(context));
 126     return tag_ == NULL ? next : $ CYSelectorPart(tag_, type_ != NULL, next);
 127 }
 128
 129 CYExpression *CYMessageParameter::TypeSignature(CYContext &context) const {
 130     return MessageType(context, type_, next_);
 131 }
 132
 133 CYExpression *CYBox::Replace(CYContext &context) {
 134     return $C1($M($V("Instance"), $S("box")), value_);
 135 }
 136
 137 CYExpression *CYObjCBlock::Replace(CYContext &context) {
 138     return $C1($ CYEncodedType(($ CYTypedIdentifier(*typed_))->Modify($ CYTypeBlockWith(parameters_))), $ CYFunctionExpression(NULL, parameters_->Parameters(context), code_));
 139 }
 140
 141 CYStatement *CYProtocol::Replace(CYContext &context) const { $T(NULL)
 142     return $ CYBlock($$->*
 143         next_->Replace(context)->*
 144         $E($C2($V("class_addProtocol"),
 145             $V("$cyc"), name_
 146         ))
 147     );
 148 }
 149
 150 CYExpression *CYSelector::Replace(CYContext &context) {
 151     return $C1($V("sel_registerName"), name_->Replace(context));
 152 }
 153
 154 CYString *CYSelectorPart::Replace(CYContext &context) {
 155     std::ostringstream str;
 156     CYForEach (part, this) {
 157         if (part->name_ != NULL)
 158             str << part->name_->Word();
 159         if (part->value_)
 160             str << ':';
 161     }
 162     return $S($pool.strdup(str.str().c_str()));
 163 }
 164
 165 CYExpression *CYSendDirect::Replace(CYContext &context) {
 166     std::ostringstream name;
 167     CYArgument **argument(&arguments_);
 168     CYSelectorPart *selector(NULL), *current(NULL);
 169
 170     while (*argument != NULL) {
 171         if ((*argument)->name_ != NULL) {
 172             CYSelectorPart *part($ CYSelectorPart((*argument)->name_, (*argument)->value_ != NULL));
 173             if (selector == NULL)
 174                 selector = part;
 175             if (current != NULL)
 176                 current->SetNext(part);
 177             current = part;
 178             (*argument)->name_ = NULL;
 179         }
 180
 181         if ((*argument)->value_ == NULL)
 182             *argument = (*argument)->next_;
 183         else
 184             argument = &(*argument)->next_;
 185     }
 186
 187     return $C2($V("objc_msgSend"), self_, selector->Replace(context), arguments_);
 188 }
 189
 190 CYExpression *CYSendSuper::Replace(CYContext &context) {
 191     return $ CYSendDirect($V("$cyr"), arguments_);
 192 }