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