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($$->*
  88         next_->Replace(context)->*
  89         $E($ CYAssign(cyt, type))->*
  90         $E($ CYAssign(cyn, $N1($V("Type"), cyt)))->*
  91         $E($C5($V("class_addIvar"), $V("$cyc"), $S(name_->Word()), $M(cyn, $S("size")), $M(cyn, $S("alignment")), cyt))
  92     );
  93 }
  94
  95 CYStatement *CYImport::Replace(CYContext &context) {
  96     return $ CYVar($L1($L(module_->part_->Word(), $C1($V("require"), module_->Replace(context, "/")))));
  97 }
  98
  99 CYExpression *CYInstanceLiteral::Replace(CYContext &context) {
 100     return $N1($V("Instance"), number_);
 101 }
 102
 103 CYStatement *CYMessage::Replace(CYContext &context, bool replace) const { $T(NULL)
 104     CYVariable *cyn($V("$cyn"));
 105     CYVariable *cyt($V("$cyt"));
 106     CYVariable *self($V("self"));
 107     CYVariable *_class($V(instance_ ? "$cys" : "$cyp"));
 108
 109     CYExpression *type(TypeSignature(context) ?: $C1($M(cyn, $S("type")), _class));
 110
 111     return $ CYBlock($$->*
 112         next_->Replace(context, replace)->*
 113         $E($ CYAssign(cyn, parameters_->Selector(context)))->*
 114         $E($ CYAssign(cyt, type))->*
 115         $E($C4($V(replace ? "class_replaceMethod" : "class_addMethod"),
 116             $V(instance_ ? "$cyc" : "$cym"),
 117             cyn,
 118             $N2($V("Functor"), $F(NULL, $P2($L("self"), $L("_cmd"), parameters_->Parameters(context)), $$->*
 119                 $ CYVar($L1($L("$cyr", $N2($V("objc_super"), self, _class))))->*
 120                 $ CYReturn($C1($M($F(NULL, NULL, code_), $S("call")), self))
 121             ), cyt),
 122             cyt
 123         ))
 124     );
 125 }
 126
 127 CYExpression *CYMessage::TypeSignature(CYContext &context) const {
 128     return MessageType(context, type_, parameters_, $S("@:"));
 129 }
 130
 131 CYFunctionParameter *CYMessageParameter::Parameters(CYContext &context) const { $T(NULL)
 132     CYFunctionParameter *next(next_->Parameters(context));
 133     return name_ == NULL ? next : $ CYFunctionParameter($ CYDeclaration(name_), next);
 134 }
 135
 136 CYSelector *CYMessageParameter::Selector(CYContext &context) const {
 137     return $ CYSelector(SelectorPart(context));
 138 }
 139
 140 CYSelectorPart *CYMessageParameter::SelectorPart(CYContext &context) const { $T(NULL)
 141     CYSelectorPart *next(next_->SelectorPart(context));
 142     return tag_ == NULL ? next : $ CYSelectorPart(tag_, name_ != NULL, next);
 143 }
 144
 145 CYExpression *CYMessageParameter::TypeSignature(CYContext &context) const {
 146     return MessageType(context, type_, next_);
 147 }
 148
 149 CYString *CYModule::Replace(CYContext &context, const char *separator) const {
 150     if (next_ == NULL)
 151         return $ CYString(part_);
 152     return $ CYString($pool.strcat(next_->Replace(context, separator)->Value(), separator, part_->Word(), NULL));
 153 }
 154
 155 CYExpression *CYBox::Replace(CYContext &context) {
 156     return $C1($M($V("Instance"), $S("box")), value_);
 157 }
 158
 159 CYExpression *CYObjCBlock::Replace(CYContext &context) {
 160     return $C1($ CYEncodedType(($ CYTypedIdentifier(*typed_))->Modify($ CYTypeBlockWith(parameters_))), $ CYFunctionExpression(NULL, parameters_->Parameters(context), statements_));
 161 }
 162
 163 CYStatement *CYProtocol::Replace(CYContext &context) const { $T(NULL)
 164     return $ CYBlock($$->*
 165         next_->Replace(context)->*
 166         $E($C2($V("class_addProtocol"),
 167             $V("$cyc"), name_
 168         ))
 169     );
 170 }
 171
 172 CYExpression *CYSelector::Replace(CYContext &context) {
 173     return $C1($V("sel_registerName"), name_->Replace(context));
 174 }
 175
 176 CYString *CYSelectorPart::Replace(CYContext &context) {
 177     std::ostringstream str;
 178     CYForEach (part, this) {
 179         if (part->name_ != NULL)
 180             str << part->name_->Word();
 181         if (part->value_)
 182             str << ':';
 183     }
 184     return $S($pool.strdup(str.str().c_str()));
 185 }
 186
 187 CYExpression *CYSendDirect::Replace(CYContext &context) {
 188     std::ostringstream name;
 189     CYArgument **argument(&arguments_);
 190     CYSelectorPart *selector(NULL), *current(NULL);
 191
 192     while (*argument != NULL) {
 193         if ((*argument)->name_ != NULL) {
 194             CYSelectorPart *part($ CYSelectorPart((*argument)->name_, (*argument)->value_ != NULL));
 195             if (selector == NULL)
 196                 selector = part;
 197             if (current != NULL)
 198                 current->SetNext(part);
 199             current = part;
 200             (*argument)->name_ = NULL;
 201         }
 202
 203         if ((*argument)->value_ == NULL)
 204             *argument = (*argument)->next_;
 205         else
 206             argument = &(*argument)->next_;
 207     }
 208
 209     return $C2($V("objc_msgSend"), self_, ($ CYSelector(selector))->Replace(context), arguments_);
 210 }
 211
 212 CYExpression *CYSendSuper::Replace(CYContext &context) {
 213     return $ CYSendDirect($V("$cyr"), arguments_);
 214 }