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 || 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 CYExpression *CYEncodedPart::Replace(CYContext &context, CYExpression *base) { $T(base)
  82     return next_->Replace(context, $ CYCall($ CYDirectMember(base, $ CYString(name_)), arguments_));
  83 }
  84
  85 CYExpression *CYEncodedType::Replace(CYContext &context) {
  86     return parts_->Replace(context, base_);
  87 }
  88
  89 CYStatement *CYField::Replace(CYContext &context) const { $T(NULL)
  90     CYVariable *cyn($V("$cyn"));
  91     CYVariable *cyt($V("$cyt"));
  92
  93     CYExpression *type($C0($M(type_, $S("toString"))));
  94
  95     return $ CYBlock($$->*
  96         next_->Replace(context)->*
  97         $E($ CYAssign(cyt, type))->*
  98         $E($ CYAssign(cyn, $N1($V("Type"), cyt)))->*
  99         $E($C5($V("class_addIvar"), $V("$cyc"), $S(name_->Word()), $M(cyn, $S("size")), $M(cyn, $S("alignment")), cyt))
 100     );
 101 }
 102
 103 CYStatement *CYImport::Replace(CYContext &context) {
 104     return this;
 105 }
 106
 107 CYStatement *CYMessage::Replace(CYContext &context, bool replace) const { $T(NULL)
 108     CYVariable *cyn($V("$cyn"));
 109     CYVariable *cyt($V("$cyt"));
 110     CYVariable *self($V("self"));
 111     CYVariable *_class($V(instance_ ? "$cys" : "$cyp"));
 112
 113     CYExpression *type(TypeSignature(context) ?: $C1($M(cyn, $S("type")), _class));
 114
 115     return $ CYBlock($$->*
 116         next_->Replace(context, replace)->*
 117         $E($ CYAssign(cyn, parameters_->Selector(context)))->*
 118         $E($ CYAssign(cyt, type))->*
 119         $E($C4($V(replace ? "class_replaceMethod" : "class_addMethod"),
 120             $V(instance_ ? "$cyc" : "$cym"),
 121             cyn,
 122             $N2($V("Functor"), $F(NULL, $P2($L("self"), $L("_cmd"), parameters_->Parameters(context)), $$->*
 123                 $ CYVar($L1($L("$cyr", $N2($V("Super"), self, _class))))->*
 124                 $ CYReturn($C1($M($F(NULL, NULL, code_), $S("call")), self))
 125             ), cyt),
 126             cyt
 127         ))
 128     );
 129 }
 130
 131 CYExpression *CYMessage::TypeSignature(CYContext &context) const {
 132     return MessageType(context, type_, parameters_, $S("@:"));
 133 }
 134
 135 CYFunctionParameter *CYMessageParameter::Parameters(CYContext &context) const { $T(NULL)
 136     CYFunctionParameter *next(next_->Parameters(context));
 137     return name_ == NULL ? next : $ CYFunctionParameter($ CYDeclaration(name_), next);
 138 }
 139
 140 CYSelector *CYMessageParameter::Selector(CYContext &context) const {
 141     return $ CYSelector(SelectorPart(context));
 142 }
 143
 144 CYSelectorPart *CYMessageParameter::SelectorPart(CYContext &context) const { $T(NULL)
 145     CYSelectorPart *next(next_->SelectorPart(context));
 146     return tag_ == NULL ? next : $ CYSelectorPart(tag_, name_ != NULL, next);
 147 }
 148
 149 CYExpression *CYMessageParameter::TypeSignature(CYContext &context) const {
 150     return MessageType(context, type_, next_);
 151 }
 152
 153 CYExpression *CYBox::Replace(CYContext &context) {
 154     return $C1($M($V("Instance"), $S("box")), value_);
 155 }
 156
 157 CYStatement *CYProtocol::Replace(CYContext &context) const { $T(NULL)
 158     return $ CYBlock($$->*
 159         next_->Replace(context)->*
 160         $E($C2($V("class_addProtocol"),
 161             $V("$cyc"), name_
 162         ))
 163     );
 164 }
 165
 166 CYExpression *CYSelector::Replace(CYContext &context) {
 167     return $C1($V("sel_registerName"), name_->Replace(context));
 168 }
 169
 170 CYString *CYSelectorPart::Replace(CYContext &context) {
 171     std::ostringstream str;
 172     CYForEach (part, this) {
 173         if (part->name_ != NULL)
 174             str << part->name_->Word();
 175         if (part->value_)
 176             str << ':';
 177     }
 178     return $S(apr_pstrdup($pool, str.str().c_str()));
 179 }
 180
 181 CYExpression *CYSendDirect::Replace(CYContext &context) {
 182     std::ostringstream name;
 183     CYArgument **argument(&arguments_);
 184     CYSelectorPart *selector(NULL), *current(NULL);
 185
 186     while (*argument != NULL) {
 187         if ((*argument)->name_ != NULL) {
 188             CYSelectorPart *part($ CYSelectorPart((*argument)->name_, (*argument)->value_ != NULL));
 189             if (selector == NULL)
 190                 selector = part;
 191             if (current != NULL)
 192                 current->SetNext(part);
 193             current = part;
 194             (*argument)->name_ = NULL;
 195         }
 196
 197         if ((*argument)->value_ == NULL)
 198             *argument = (*argument)->next_;
 199         else
 200             argument = &(*argument)->next_;
 201     }
 202
 203     return $C2($V("objc_msgSend"), self_, ($ CYSelector(selector))->Replace(context), arguments_);
 204 }
 205
 206 CYExpression *CYSendSuper::Replace(CYContext &context) {
 207     return $ CYSendDirect($V("$cyr"), arguments_);
 208 }