ObjectiveC/Replace.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2012  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Lesser General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify it under
   8  * the terms of the GNU Lesser General Public License as published by the
   9  * Free Software Foundation, either version 3 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15  * License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser 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)
  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, $P5($L("$cys"), $L("$cyp"), $L("$cyc"), $L("$cyn"), $L("$cyt")), $$->*
  49         $E($ CYAssign($V("$cyp"), $C1($V("object_getClass"), cys)))->*
  50         $E($ CYAssign(cyc, cys))->*
  51         $E($ CYAssign($V("$cym"), $C1($V("object_getClass"), cyc)))->*
  52         messages_->Replace(context, true)
  53     ), name_->ClassName(context, true)));
  54 }
  55
  56 CYExpression *CYClass::Replace_(CYContext &context) {
  57     CYVariable *cyc($V("$cyc")), *cys($V("$cys"));
  58
  59     CYExpression *name(name_ != NULL ? name_->ClassName(context, false) : $C1($V("$cyq"), $S("CY$")));
  60
  61     return $C1($F(NULL, $P6($L("$cys"), $L("$cyp"), $L("$cyc"), $L("$cyn"), $L("$cyt"), $L("$cym")), $$->*
  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 {
  82     return NULL;
  83 }
  84
  85 CYStatement *CYImport::Replace(CYContext &context) {
  86     return this;
  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     CYExpression *type(TypeSignature(context) ?: $C1($M(cyn, $S("type")), _class));
  96
  97     return $ CYBlock($$->*
  98         next_->Replace(context, replace)->*
  99         $E($ CYAssign(cyn, parameters_->Selector(context)))->*
 100         $E($ CYAssign(cyt, type))->*
 101         $E($C4($V(replace ? "class_replaceMethod" : "class_addMethod"),
 102             $V(instance_ ? "$cyc" : "$cym"),
 103             cyn,
 104             $N2($V("Functor"), $F(NULL, $P2($L("self"), $L("_cmd"), parameters_->Parameters(context)), $$->*
 105                 $ CYVar($L1($L("$cyr", $N2($V("Super"), self, _class))))->*
 106                 $ CYReturn($C1($M($F(NULL, NULL, code_), $S("call")), self))
 107             ), cyt),
 108             cyt
 109         ))
 110     );
 111 }
 112
 113 CYExpression *CYMessage::TypeSignature(CYContext &context) const {
 114     return MessageType(context, type_, parameters_, $S("@:"));
 115 }
 116
 117 CYFunctionParameter *CYMessageParameter::Parameters(CYContext &context) const { $T(NULL)
 118     CYFunctionParameter *next(next_->Parameters(context));
 119     return name_ == NULL ? next : $ CYFunctionParameter($ CYDeclaration(name_), next);
 120 }
 121
 122 CYSelector *CYMessageParameter::Selector(CYContext &context) const {
 123     return $ CYSelector(SelectorPart(context));
 124 }
 125
 126 CYSelectorPart *CYMessageParameter::SelectorPart(CYContext &context) const { $T(NULL)
 127     CYSelectorPart *next(next_->SelectorPart(context));
 128     return tag_ == NULL ? next : $ CYSelectorPart(tag_, name_ != NULL, next);
 129 }
 130
 131 CYExpression *CYMessageParameter::TypeSignature(CYContext &context) const {
 132     return MessageType(context, type_, next_);
 133 }
 134
 135 CYExpression *CYBox::Replace(CYContext &context) {
 136     return $C1($M($V("Instance"), $S("box")), value_);
 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 CYExpression *CYSelector::Replace(CYContext &context) {
 149     return $N1($V("Selector"), 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 $S(apr_pstrdup($pool, str.str().c_str()));
 161 }
 162
 163 CYExpression *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_, ($ CYSelector(selector))->Replace(context), arguments_);
 186 }
 187
 188 CYExpression *CYSendSuper::Replace(CYContext &context) {
 189     return $ CYSendDirect($V("$cyr"), arguments_);
 190 }