ObjectiveC/Replace.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2013  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "Replace.hpp"
  23 #include "ObjectiveC/Syntax.hpp"
  24
  25 #include <sstream>
  26
  27 static CYExpression *MessageType(CYContext &context, CYExpression *type, CYMessageParameter *next, CYExpression *extra = NULL) {
  28     if (type == NULL)
  29         return NULL;
  30
  31     CYExpression *left($C0($M(type, $S("toString"))));
  32     if (extra != NULL)
  33         left = $ CYAdd(left, extra);
  34
  35     if (next == NULL || next->name_ == NULL)
  36         return left;
  37
  38     CYExpression *right(next->TypeSignature(context));
  39     if (right == NULL)
  40         return NULL;
  41
  42     return $ CYAdd(left, right);
  43 }
  44
  45 CYStatement *CYCategory::Replace(CYContext &context) {
  46     CYVariable *cyc($V("$cyc")), *cys($V("$cys"));
  47
  48     return $E($C1($F(NULL, $P6($L("$cys"), $L("$cyp"), $L("$cyc"), $L("$cyn"), $L("$cyt"), $L("$cym")), $$->*
  49         $E($ CYAssign($V("$cyp"), $C1($V("object_getClass"), cys)))->*
  50         $E($ CYAssign(cyc, cys))->*
  51         $E($ CYAssign($V("$cym"), $C1($V("object_getClass"), cyc)))->*
  52         messages_->Replace(context, true)
  53     ), name_->ClassName(context, true)));
  54 }
  55
  56 CYExpression *CYClass::Replace_(CYContext &context) {
  57     CYVariable *cyc($V("$cyc")), *cys($V("$cys"));
  58
  59     CYExpression *name(name_ != NULL ? name_->ClassName(context, false) : $C1($V("$cyq"), $S("CY$")));
  60
  61     return $C1($F(NULL, $P6($L("$cys"), $L("$cyp"), $L("$cyc"), $L("$cyn"), $L("$cyt"), $L("$cym")), $$->*
  62         $E($ CYAssign($V("$cyp"), $C1($V("object_getClass"), cys)))->*
  63         $E($ CYAssign(cyc, $C3($V("objc_allocateClassPair"), cys, name, $D(0))))->*
  64         $E($ CYAssign($V("$cym"), $C1($V("object_getClass"), cyc)))->*
  65         protocols_->Replace(context)->*
  66         fields_->Replace(context)->*
  67         messages_->Replace(context, false)->*
  68         $E($C1($V("objc_registerClassPair"), cyc))->*
  69         $ CYReturn(cyc)
  70     ), super_ == NULL ? $ CYNull() : super_);
  71 }
  72
  73 CYExpression *CYClassExpression::Replace(CYContext &context) {
  74     return Replace_(context);
  75 }
  76
  77 CYStatement *CYClassStatement::Replace(CYContext &context) {
  78     return $E(Replace_(context));
  79 }
  80
  81 CYStatement *CYField::Replace(CYContext &context) const { $T(NULL)
  82     CYVariable *cyn($V("$cyn"));
  83     CYVariable *cyt($V("$cyt"));
  84
  85     CYExpression *type($C0($M(type_, $S("toString"))));
  86
  87     return $ CYBlock($$->*
  88         next_->Replace(context)->*
  89         $E($ CYAssign(cyt, type))->*
  90         $E($ CYAssign(cyn, $N1($V("Type"), cyt)))->*
  91         $E($C5($V("class_addIvar"), $V("$cyc"), $S(name_->Word()), $M(cyn, $S("size")), $M(cyn, $S("alignment")), cyt))
  92     );
  93 }
  94
  95 CYStatement *CYImport::Replace(CYContext &context) {
  96     return this;
  97 }
  98
  99 CYStatement *CYMessage::Replace(CYContext &context, bool replace) const { $T(NULL)
 100     CYVariable *cyn($V("$cyn"));
 101     CYVariable *cyt($V("$cyt"));
 102     CYVariable *self($V("self"));
 103     CYVariable *_class($V(instance_ ? "$cys" : "$cyp"));
 104
 105     CYExpression *type(TypeSignature(context) ?: $C1($M(cyn, $S("type")), _class));
 106
 107     return $ CYBlock($$->*
 108         next_->Replace(context, replace)->*
 109         $E($ CYAssign(cyn, parameters_->Selector(context)))->*
 110         $E($ CYAssign(cyt, type))->*
 111         $E($C4($V(replace ? "class_replaceMethod" : "class_addMethod"),
 112             $V(instance_ ? "$cyc" : "$cym"),
 113             cyn,
 114             $N2($V("Functor"), $F(NULL, $P2($L("self"), $L("_cmd"), parameters_->Parameters(context)), $$->*
 115                 $ CYVar($L1($L("$cyr", $N2($V("Super"), self, _class))))->*
 116                 $ CYReturn($C1($M($F(NULL, NULL, code_), $S("call")), self))
 117             ), cyt),
 118             cyt
 119         ))
 120     );
 121 }
 122
 123 CYExpression *CYMessage::TypeSignature(CYContext &context) const {
 124     return MessageType(context, type_, parameters_, $S("@:"));
 125 }
 126
 127 CYFunctionParameter *CYMessageParameter::Parameters(CYContext &context) const { $T(NULL)
 128     CYFunctionParameter *next(next_->Parameters(context));
 129     return name_ == NULL ? next : $ CYFunctionParameter($ CYDeclaration(name_), next);
 130 }
 131
 132 CYSelector *CYMessageParameter::Selector(CYContext &context) const {
 133     return $ CYSelector(SelectorPart(context));
 134 }
 135
 136 CYSelectorPart *CYMessageParameter::SelectorPart(CYContext &context) const { $T(NULL)
 137     CYSelectorPart *next(next_->SelectorPart(context));
 138     return tag_ == NULL ? next : $ CYSelectorPart(tag_, name_ != NULL, next);
 139 }
 140
 141 CYExpression *CYMessageParameter::TypeSignature(CYContext &context) const {
 142     return MessageType(context, type_, next_);
 143 }
 144
 145 CYExpression *CYBox::Replace(CYContext &context) {
 146     return $C1($M($V("Instance"), $S("box")), value_);
 147 }
 148
 149 CYExpression *CYObjCBlock::Replace(CYContext &context) {
 150     return $N2($V("Functor"), $ CYFunctionExpression(NULL, $ CYFunctionParameter($ CYDeclaration($ CYIdentifier("$cyt")), parameters_->Parameters(context)), statements_), parameters_->TypeSignature(context, $ CYAdd(typed_->Replace(context), $ CYString("@"))));
 151 }
 152
 153 CYStatement *CYProtocol::Replace(CYContext &context) const { $T(NULL)
 154     return $ CYBlock($$->*
 155         next_->Replace(context)->*
 156         $E($C2($V("class_addProtocol"),
 157             $V("$cyc"), name_
 158         ))
 159     );
 160 }
 161
 162 CYExpression *CYSelector::Replace(CYContext &context) {
 163     return $C1($V("sel_registerName"), name_->Replace(context));
 164 }
 165
 166 CYString *CYSelectorPart::Replace(CYContext &context) {
 167     std::ostringstream str;
 168     CYForEach (part, this) {
 169         if (part->name_ != NULL)
 170             str << part->name_->Word();
 171         if (part->value_)
 172             str << ':';
 173     }
 174     return $S($pool.strdup(str.str().c_str()));
 175 }
 176
 177 CYExpression *CYSendDirect::Replace(CYContext &context) {
 178     std::ostringstream name;
 179     CYArgument **argument(&arguments_);
 180     CYSelectorPart *selector(NULL), *current(NULL);
 181
 182     while (*argument != NULL) {
 183         if ((*argument)->name_ != NULL) {
 184             CYSelectorPart *part($ CYSelectorPart((*argument)->name_, (*argument)->value_ != NULL));
 185             if (selector == NULL)
 186                 selector = part;
 187             if (current != NULL)
 188                 current->SetNext(part);
 189             current = part;
 190             (*argument)->name_ = NULL;
 191         }
 192
 193         if ((*argument)->value_ == NULL)
 194             *argument = (*argument)->next_;
 195         else
 196             argument = &(*argument)->next_;
 197     }
 198
 199     return $C2($V("objc_msgSend"), self_, ($ CYSelector(selector))->Replace(context), arguments_);
 200 }
 201
 202 CYExpression *CYSendSuper::Replace(CYContext &context) {
 203     return $ CYSendDirect($V("$cyr"), arguments_);
 204 }