ObjectiveC/Replace.cpp

   1 /* Cycript - Inlining/Optimizing JavaScript Compiler
   2  * Copyright (C) 2009  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #include "Replace.hpp"
  41 #include "ObjectiveC/Syntax.hpp"
  42
  43 #include <sstream>
  44
  45 CYStatement *CYCategory::Replace(CYContext &context) {
  46     CYVariable *cyc($V("$cyc")), *cys($V("$cys"));
  47
  48     return $E($C1($F(NULL, $P5("$cys", "$cyp", "$cyc", "$cyn", "$cyt"), $$->*
  49         $E($ CYAssign($V("$cyp"), $C1($V("object_getClass"), cys)))->*
  50         $E($ CYAssign(cyc, cys))->*
  51         $E($ CYAssign($V("$cym"), $C1($V("object_getClass"), cyc)))->*
  52         messages_->Replace(context, true)
  53     ), name_->ClassName(context, true)));
  54 }
  55
  56 CYExpression *CYClass::Replace_(CYContext &context) {
  57     CYVariable *cyc($V("$cyc")), *cys($V("$cys"));
  58
  59     CYExpression *name(name_ != NULL ? name_->ClassName(context, false) : $C1($V("$cyq"), $S("CY$")));
  60
  61     return $C1($F(NULL, $P6("$cys", "$cyp", "$cyc", "$cyn", "$cyt", "$cym"), $$->*
  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     return $ CYBlock($$->*
  96         next_->Replace(context, replace)->*
  97         $E($ CYAssign(cyn, parameters_->Selector(context)))->*
  98         $E($ CYAssign(cyt, $C1($M(cyn, $S("type")), _class)))->*
  99         $E($C4($V(replace ? "class_replaceMethod" : "class_addMethod"),
 100             $V(instance_ ? "$cyc" : "$cym"),
 101             cyn,
 102             $N2($V("Functor"), $F(NULL, $P2("self", "_cmd", parameters_->Parameters(context)), $$->*
 103                 $ CYVar($L1($L($I("$cyr"), $N2($V("Super"), self, _class))))->*
 104                 $ CYReturn($C1($M($F(NULL, NULL, code_), $S("call")), self))
 105             ), cyt),
 106             cyt
 107         ))
 108     );
 109 }
 110
 111 CYFunctionParameter *CYMessageParameter::Parameters(CYContext &context) const { $T(NULL)
 112     CYFunctionParameter *next(next_->Parameters(context));
 113     return name_ == NULL ? next : $ CYFunctionParameter(name_, next);
 114 }
 115
 116 CYSelector *CYMessageParameter::Selector(CYContext &context) const {
 117     return $ CYSelector(SelectorPart(context));
 118 }
 119
 120 CYSelectorPart *CYMessageParameter::SelectorPart(CYContext &context) const { $T(NULL)
 121     CYSelectorPart *next(next_->SelectorPart(context));
 122     return tag_ == NULL ? next : $ CYSelectorPart(tag_, name_ != NULL, next);
 123 }
 124
 125 CYStatement *CYProtocol::Replace(CYContext &context) const { $T(NULL)
 126     return $ CYBlock($$->*
 127         next_->Replace(context)->*
 128         $E($C2($V("class_addProtocol"),
 129             $V("$cyc"), name_
 130         ))
 131     );
 132 }
 133
 134 CYExpression *CYSelector::Replace(CYContext &context) {
 135     return $N1($V("Selector"), name_->Replace(context));
 136 }
 137
 138 CYString *CYSelectorPart::Replace(CYContext &context) {
 139     std::ostringstream str;
 140     for (const CYSelectorPart *part(this); part != NULL; part = part->next_) {
 141         if (part->name_ != NULL)
 142             str << part->name_->Word();
 143         if (part->value_)
 144             str << ':';
 145     }
 146     return $S(apr_pstrdup($pool, str.str().c_str()));
 147 }
 148
 149 CYExpression *CYSendDirect::Replace(CYContext &context) {
 150     std::ostringstream name;
 151     CYArgument **argument(&arguments_);
 152     CYSelectorPart *selector(NULL), *current(NULL);
 153
 154     while (*argument != NULL) {
 155         if ((*argument)->name_ != NULL) {
 156             CYSelectorPart *part($ CYSelectorPart((*argument)->name_, (*argument)->value_ != NULL));
 157             if (selector == NULL)
 158                 selector = part;
 159             if (current != NULL)
 160                 current->SetNext(part);
 161             current = part;
 162             (*argument)->name_ = NULL;
 163         }
 164
 165         if ((*argument)->value_ == NULL)
 166             *argument = (*argument)->next_;
 167         else
 168             argument = &(*argument)->next_;
 169     }
 170
 171     return $C2($V("objc_msgSend"), self_, ($ CYSelector(selector))->Replace(context), arguments_);
 172 }
 173
 174 CYExpression *CYSendSuper::Replace(CYContext &context) {
 175     return $ CYSendDirect($V("cyr"), arguments_);
 176 }