X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/96a7e5c2ddd72d24aaa597413b32b8059962fddf..6a9812501258df26b7c487e50744b91abe8ebe39:/Output.cpp?ds=inline

diff --git a/Output.cpp b/Output.cpp
index aeb5699..26dc81f 100644
--- a/Output.cpp
+++ b/Output.cpp
@@ -1,9 +1,45 @@
+/* Cycript - Inlining/Optimizing JavaScript Compiler
+ * Copyright (C) 2009  Jay Freeman (saurik)
+*/
+
+/* Modified BSD License {{{ */
+/*
+ *        Redistribution and use in source and binary
+ * forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the
+ *    above copyright notice, this list of conditions
+ *    and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the
+ *    above copyright notice, this list of conditions
+ *    and the following disclaimer in the documentation
+ *    and/or other materials provided with the
+ *    distribution.
+ * 3. The name of the author may not be used to endorse
+ *    or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/* }}} */
+
+#include "cycript.hpp"
 #include "Parser.hpp"
 
-#include <iostream>
-#include <iomanip>
-
-#include <objc/runtime.h>
 #include <sstream>
 
 _finline CYFlags operator ~(CYFlags rhs) {
@@ -23,7 +59,7 @@ _finline CYFlags &operator |=(CYFlags &lhs, CYFlags rhs) {
 }
 
 _finline CYFlags CYLeft(CYFlags flags) {
-    return flags;
+    return flags & ~(CYNoDangle | CYNoInteger);
 }
 
 _finline CYFlags CYRight(CYFlags flags) {
@@ -31,22 +67,40 @@ _finline CYFlags CYRight(CYFlags flags) {
 }
 
 _finline CYFlags CYCenter(CYFlags flags) {
-    return CYRight(flags);
+    return CYLeft(CYRight(flags));
 }
 
-#define CYPA 16
+void CYOutput::Terminate() {
+    out_ << ';';
+    mode_ = NoMode;
+}
 
 CYOutput &CYOutput::operator <<(char rhs) {
-    if (rhs == ' ') {
-        if (pretty_) {
-            out_ << ' ';
-            mode_ = NoMode;
-        }
-        goto done;
-    }
+    if (rhs == ' ' || rhs == '\n')
+        if (pretty_)
+            out_ << rhs;
+        else goto done;
+    else if (rhs == '\t')
+        if (pretty_)
+            for (unsigned i(0); i != indent_; ++i)
+                out_ << "    ";
+        else goto done;
+    else if (rhs == '\r') {
+        if (right_) {
+            out_ << '\n';
+            right_ = false;
+        } goto done;
+    } else goto work;
+
+    right_ = true;
+    mode_ = NoMode;
+    goto done;
 
-    if (mode_ == Terminated && rhs != '}')
+  work:
+    if (mode_ == Terminated && rhs != '}') {
+        right_ = true;
         out_ << ';';
+    }
 
     if (rhs == ';') {
         if (pretty_)
@@ -55,6 +109,10 @@ CYOutput &CYOutput::operator <<(char rhs) {
             mode_ = Terminated;
             goto done;
         }
+    } else if (rhs == '+') {
+        if (mode_ == NoPlus)
+            out_ << ' ';
+        mode_ = NoPlus;
     } else if (rhs == '-') {
         if (mode_ == NoHyphen)
             out_ << ' ';
@@ -66,6 +124,7 @@ CYOutput &CYOutput::operator <<(char rhs) {
     } else none:
         mode_ = NoMode;
 
+    right_ = true;
     out_ << rhs;
   done:
     return *this;
@@ -80,6 +139,7 @@ CYOutput &CYOutput::operator <<(const char *rhs) {
     if (mode_ == Terminated)
         out_ << ';';
     else if (
+        mode_ == NoPlus && *rhs == '+' ||
         mode_ == NoHyphen && *rhs == '-' ||
         mode_ == NoLetter && WordEndRange_[*rhs]
     )
@@ -90,35 +150,11 @@ CYOutput &CYOutput::operator <<(const char *rhs) {
     else
         mode_ = NoMode;
 
+    right_ = true;
     out_ << rhs;
     return *this;
 }
 
-void CYOutput::Indent() {
-    if (!pretty_)
-        return;
-    for (unsigned i(0); i != indent_; ++i)
-        out_ << "    ";
-    mode_ = NoMode;
-}
-
-void OutputBody(CYOutput &out, CYStatement *body) {
-    out << ' ' << '{';
-    if (out.pretty_)
-        out << '\n';
-    ++out.indent_;
-    if (body != NULL)
-        body->Multiple(out);
-    --out.indent_;
-    out.Indent();
-    out << '}';
-}
-
-void CYAddressOf::Output(CYOutput &out, CYFlags flags) const {
-    rhs_->Output(out, 1, CYLeft(flags));
-    out << ".$cya()";
-}
-
 void CYArgument::Output(CYOutput &out) const {
     if (name_ != NULL) {
         out << *name_;
@@ -139,21 +175,7 @@ void CYArray::Output(CYOutput &out, CYFlags flags) const {
 }
 
 void CYArrayComprehension::Output(CYOutput &out, CYFlags flags) const {
-    // XXX: I don't necc. need the ()s
-    out << "(function($cyv";
-    for (CYComprehension *comprehension(comprehensions_); comprehension != NULL; comprehension = comprehension->next_)
-        if (const char *name = comprehension->Name())
-            out << ',' << name;
-    out << "){";
-    out << "$cyv=[];";
-    comprehensions_->Output(out);
-    out << "$cyv.push(";
-    expression_->Output(out, CYPA, CYNoFlags);
-    out << ");";
-    for (CYComprehension *comprehension(comprehensions_); comprehension != NULL; comprehension = comprehension->next_)
-        comprehension->End_(out);
-    out << "return $cyv;";
-    out << "}())";
+    out << '[' << *expression_ << ' ' << *comprehensions_ << ']';
 }
 
 void CYAssignment::Output(CYOutput &out, CYFlags flags) const {
@@ -162,8 +184,22 @@ void CYAssignment::Output(CYOutput &out, CYFlags flags) const {
     rhs_->Output(out, Precedence(), CYRight(flags));
 }
 
+void CYBlock::Output(CYOutput &out) const {
+    out << '{' << '\n';
+    ++out.indent_;
+    if (statements_ != NULL)
+        statements_->Multiple(out);
+    --out.indent_;
+    out << '\t' << '}';
+}
+
 void CYBlock::Output(CYOutput &out, CYFlags flags) const {
-    statements_->Single(out, flags);
+    if (statements_ == NULL)
+        out.Terminate();
+    else if (statements_->next_ == NULL)
+        statements_->Single(out, flags);
+    else
+        Output(out);
 }
 
 void CYBoolean::Output(CYOutput &out, CYFlags flags) const {
@@ -187,56 +223,20 @@ void CYCall::Output(CYOutput &out, CYFlags flags) const {
         out << ')';
 }
 
-void CYCatch::Output(CYOutput &out) const {
-    out << "catch" << ' ' << '(' << *name_ << ')' << ' ' << '{';
-    if (code_ != NULL)
-        code_->Multiple(out);
-    out << '}';
-}
+namespace cy {
+namespace Syntax {
 
-void CYCategory::Output(CYOutput &out, CYFlags flags) const {
-    out << "(function($cys,$cyp,$cyc,$cyn,$cyt){";
-    out << "$cyp=object_getClass($cys);";
-    out << "$cyc=$cys;";
-    if (messages_ != NULL)
-        messages_->Output(out, true);
-    out << "})(";
-    name_->ClassName(out, true);
-    out << ')';
-    out << ';';
+void Catch::Output(CYOutput &out) const {
+    out << ' ' << "catch" << ' ' << '(' << *name_ << ')' << ' ' << code_;
 }
 
-void CYClass::Output(CYOutput &out, CYFlags flags) const {
-    // XXX: I don't necc. need the ()s
-    out << "(function($cys,$cyp,$cyc,$cyn,$cyt,$cym){";
-    out << "$cyp=object_getClass($cys);";
-    out << "$cyc=objc_allocateClassPair($cys,";
-    if (name_ != NULL)
-        name_->ClassName(out, false);
-    else
-        out << "$cyq(\"CY$\")";
-    out << ",0);";
-    out << "$cym=object_getClass($cyc);";
-    if (fields_ != NULL)
-        fields_->Output(out);
-    if (messages_ != NULL)
-        messages_->Output(out, false);
-    out << "objc_registerClassPair($cyc);";
-    out << "return $cyc;";
-    out << "}(";
-    if (super_ != NULL)
-        super_->Output(out, CYPA, CYNoFlags);
-    else
-        out << "null";
-    out << "))";
-}
+} }
 
-void CYClassExpression::Output(CYOutput &out, CYFlags flags) const {
-    CYClass::Output(out, flags);
-}
-
-void CYClassStatement::Output(CYOutput &out, CYFlags flags) const {
-    CYClass::Output(out, flags);
+void CYComment::Output(CYOutput &out, CYFlags flags) const {
+    out << '\r';
+    out.out_ << value_;
+    out.right_ = true;
+    out << '\r';
 }
 
 void CYCompound::Output(CYOutput &out, CYFlags flags) const {
@@ -255,11 +255,6 @@ void CYCompound::Output(CYOutput &out, CYFlags flags) const {
             expression->Output(out, flags);
 }
 
-void CYComprehension::Output(CYOutput &out) const {
-    Begin_(out);
-    out << next_;
-}
-
 void CYCondition::Output(CYOutput &out, CYFlags flags) const {
     test_->Output(out, Precedence() - 1, CYLeft(flags));
     out << ' ' << '?' << ' ';
@@ -281,16 +276,14 @@ void CYClause::Output(CYOutput &out) const {
         out << "case" << ' ' << *case_;
     else
         out << "default";
-    out << ':';
-    if (out.pretty_)
-        out << '\n';
-    if (code_ != NULL)
-        code_->Multiple(out, CYNoFlags);
+    out << ':' << '\n';
+    if (statements_ != NULL)
+        statements_->Multiple(out);
     out << next_;
 }
 
 const char *CYDeclaration::ForEachIn() const {
-    return identifier_->Value();
+    return identifier_->Word();
 }
 
 void CYDeclaration::ForIn(CYOutput &out, CYFlags flags) const {
@@ -298,10 +291,6 @@ void CYDeclaration::ForIn(CYOutput &out, CYFlags flags) const {
     Output(out, CYRight(flags));
 }
 
-void CYDeclaration::ForEachIn(CYOutput &out) const {
-    out << *identifier_;
-}
-
 void CYDeclaration::Output(CYOutput &out, CYFlags flags) const {
     out << *identifier_;
     if (initialiser_ != NULL) {
@@ -345,7 +334,7 @@ void CYDirectMember::Output(CYOutput &out, CYFlags flags) const {
 
 void CYDoWhile::Output(CYOutput &out, CYFlags flags) const {
     out << "do";
-    code_->Single(out, CYNoFlags);
+    code_->Single(out, CYCenter(flags));
     out << "while" << ' ' << '(' << *test_ << ')';
 }
 
@@ -362,7 +351,7 @@ void CYElement::Output(CYOutput &out) const {
 }
 
 void CYEmpty::Output(CYOutput &out, CYFlags flags) const {
-    out.out_ << ';';
+    out.Terminate();
 }
 
 void CYExpress::Output(CYOutput &out, CYFlags flags) const {
@@ -382,10 +371,6 @@ void CYExpression::For(CYOutput &out) const {
     Output(out, CYNoIn);
 }
 
-void CYExpression::ForEachIn(CYOutput &out) const {
-    Output(out, CYPA, CYNoRightHand);
-}
-
 void CYExpression::ForIn(CYOutput &out, CYFlags flags) const {
     Output(out, flags | CYNoRightHand);
 }
@@ -401,85 +386,57 @@ void CYExpression::Output(CYOutput &out, unsigned precedence, CYFlags flags) con
         Output(out, flags);
 }
 
-void CYField::Output(CYOutput &out) const {
-    // XXX: implement!
-}
-
 void CYFinally::Output(CYOutput &out) const {
-    out << "finally" << ' ' << '{';
-    if (code_ != NULL)
-        code_->Multiple(out);
-    out << '}';
+    out << ' ' << "finally" << ' ' << code_;
 }
 
 void CYFor::Output(CYOutput &out, CYFlags flags) const {
     out << "for" << ' ' << '(';
     if (initialiser_ != NULL)
         initialiser_->For(out);
-    out.out_ << ';';
+    out.Terminate();
     out << test_;
-    out.out_ << ';';
+    out.Terminate();
     out << increment_;
     out << ')';
-    code_->Single(out, CYNoFlags);
+    code_->Single(out, CYRight(flags));
 }
 
 void CYForEachIn::Output(CYOutput &out, CYFlags flags) const {
-    out << "with({$cys:0,$cyt:0}){";
-
-    out << "$cys=";
-    set_->Output(out, CYPA, CYNoFlags);
-    out << ';';
-
-    out << "for($cyt in $cys){";
-
-    initialiser_->ForEachIn(out);
-    out << "=$cys[$cyt];";
-
-    code_->Multiple(out);
-
-    out << '}';
-
-    out << '}';
-}
-
-void CYForEachInComprehension::Begin_(CYOutput &out) const {
-    out << "(function($cys){";
-    out << "$cys=";
-    set_->Output(out, CYPA, CYNoFlags);
-    out << ';';
-
-    out << "for(" << *name_ << " in $cys){";
-    out << *name_ << "=$cys[" << *name_ << "];";
+    out << "for" << ' ' << "each" << ' ' << '(';
+    initialiser_->ForIn(out, CYNoIn);
+    out << "in" << *set_ << ')';
+    code_->Single(out, CYRight(flags));
 }
 
-void CYForEachInComprehension::End_(CYOutput &out) const {
-    out << "}}());";
+void CYForEachInComprehension::Output(CYOutput &out) const {
+    out << "for" << ' ' << "each" << ' ' << '(' << *name_ << ' ' << "in" << ' ' << *set_ << ')' << next_;
 }
 
 void CYForIn::Output(CYOutput &out, CYFlags flags) const {
     out << "for" << ' ' << '(';
-    initialiser_->ForIn(out, CYNoIn);
+    if (initialiser_ != NULL)
+        initialiser_->ForIn(out, CYNoIn);
     out << "in" << *set_ << ')';
     code_->Single(out, CYRight(flags));
 }
 
-void CYForInComprehension::Begin_(CYOutput &out) const {
-    out << "for" << ' ' << '(' << *name_ << "in" << *set_ << ')';
+void CYForInComprehension::Output(CYOutput &out) const {
+    out << "for" << ' ' << '(' << *name_ << ' ' << "in" << ' ' << *set_ << ')';
 }
 
 void CYFunction::Output(CYOutput &out, CYFlags flags) const {
+    // XXX: one could imagine using + here to save a byte
     bool protect((flags & CYNoFunction) != 0);
     if (protect)
         out << '(';
     out << "function";
+    if (out.options_.verbose_)
+        out.out_ << ':' << static_cast<const CYScope *>(this);
     if (name_ != NULL)
         out << ' ' << *name_;
-    out << '(';
-    if (parameters_ != NULL)
-        out << *parameters_;
-    out << ')';
-    OutputBody(out, body_);
+    out << '(' << parameters_ << ')';
+    out << ' ' << code_;
     if (protect)
         out << ')';
 }
@@ -498,49 +455,53 @@ void CYFunctionParameter::Output(CYOutput &out) const {
         out << ',' << ' ' << *next_;
 }
 
+const char *CYIdentifier::Word() const {
+    return replace_ == NULL || replace_ == this ? CYWord::Word() : replace_->Word();
+}
+
 void CYIf::Output(CYOutput &out, CYFlags flags) const {
     bool protect(false);
     if (false_ == NULL && (flags & CYNoDangle) != 0) {
         protect = true;
         out << '{';
     }
-    out << "if" << ' ' << '(';
-    test_->Output(out, CYNoFlags);
-    out << ')';
+
+    out << "if" << ' ' << '(' << *test_ << ')';
+
     CYFlags right(protect ? CYNoFlags : CYRight(flags));
+
     CYFlags jacks(CYNoDangle);
     if (false_ == NULL)
         jacks |= right;
+    else
+        jacks |= protect ? CYNoFlags : CYCenter(flags);
+
     true_->Single(out, jacks);
+
     if (false_ != NULL) {
         out << "else";
         false_->Single(out, right);
     }
+
     if (protect)
         out << '}';
 }
 
-void CYIfComprehension::Begin_(CYOutput &out) const {
-    out << "if" << '(' << *test_ << ')';
-}
-
-void CYIndirect::Output(CYOutput &out, CYFlags flags) const {
-    rhs_->Output(out, 1, CYLeft(flags));
-    out << ".$cyi";
+void CYIfComprehension::Output(CYOutput &out) const {
+    out << "if" << ' ' << '(' << *test_ << ')' << next_;
 }
 
 void CYIndirectMember::Output(CYOutput &out, CYFlags flags) const {
     object_->Output(out, Precedence(), CYLeft(flags));
-    out << ".$cyi";
     if (const char *word = property_->Word())
-        out << '.' << word;
+        out << "->" << word;
     else
-        out << '[' << *property_ << ']';
+        out << "->" << '[' << *property_ << ']';
 }
 
 void CYInfix::Output(CYOutput &out, CYFlags flags) const {
     const char *name(Operator());
-    bool protect((flags & CYNoIn) != 0 && strcmp(name, "in"));
+    bool protect((flags & CYNoIn) != 0 && strcmp(name, "in") == 0);
     if (protect)
         out << '(';
     CYFlags left(protect ? CYNoFlags : CYLeft(flags));
@@ -552,34 +513,13 @@ void CYInfix::Output(CYOutput &out, CYFlags flags) const {
         out << ')';
 }
 
-void CYLet::Output(CYOutput &out, CYFlags flags) const {
-    out << "let" << ' ' << '(' << *declarations_ << ')' << ' ' << '{';
-    if (statements_ != NULL)
-        statements_->Multiple(out);
-    out << '}';
+void CYLabel::Output(CYOutput &out, CYFlags flags) const {
+    out << *name_ << ':' << ' ';
+    statement_->Single(out, CYRight(flags));
 }
 
-void CYMessage::Output(CYOutput &out, bool replace) const {
-    if (next_ != NULL)
-        next_->Output(out, replace);
-    out << "$cyn=new Selector(\"";
-    for (CYMessageParameter *parameter(parameter_); parameter != NULL; parameter = parameter->next_)
-        if (parameter->tag_ != NULL) {
-            out << *parameter->tag_;
-            if (parameter->name_ != NULL)
-                out << ':';
-        }
-    out << "\");";
-    out << "$cyt=$cyn.type($cy" << (instance_ ? 's' : 'p') << ");";
-    out << "class_" << (replace ? "replace" : "add") << "Method($cy" << (instance_ ? 'c' : 'm') << ",$cyn,";
-    out << "new Functor(function(self,_cmd";
-    for (CYMessageParameter *parameter(parameter_); parameter != NULL; parameter = parameter->next_)
-        if (parameter->name_ != NULL)
-            out << ',' << *parameter->name_;
-    out << "){return function(){";
-    if (body_ != NULL)
-        body_->Multiple(out);
-    out << "}.call(self);},$cyt),$cyt);";
+void CYLet::Output(CYOutput &out, CYFlags flags) const {
+    out << "let" << ' ' << '(' << *declarations_ << ')' << ' ' << code_;
 }
 
 void CYNew::Output(CYOutput &out, CYFlags flags) const {
@@ -595,9 +535,13 @@ void CYNull::Output(CYOutput &out, CYFlags flags) const {
 }
 
 void CYNumber::Output(CYOutput &out, CYFlags flags) const {
-    char value[32];
-    sprintf(value, "%.17g", Value());
-    out << value;
+    std::ostringstream str;
+    CYNumerify(str, Value());
+    std::string value(str.str());
+    out << value.c_str();
+    // XXX: this should probably also handle hex conversions and exponents
+    if ((flags & CYNoInteger) != 0 && value.find('.') == std::string::npos)
+        out << '.';
 }
 
 void CYNumber::PropertyName(CYOutput &out) const {
@@ -608,9 +552,11 @@ void CYObject::Output(CYOutput &out, CYFlags flags) const {
     bool protect((flags & CYNoBrace) != 0);
     if (protect)
         out << '(';
-    out << '{';
-    out << property_;
-    out << '}';
+    out << '{' << '\n';
+    ++out.indent_;
+    out << properties_;
+    --out.indent_;
+    out << '\t' << '}';
     if (protect)
         out << ')';
 }
@@ -628,12 +574,20 @@ void CYPrefix::Output(CYOutput &out, CYFlags flags) const {
     rhs_->Output(out, Precedence(), CYRight(flags));
 }
 
+void CYProgram::Output(CYOutput &out) const {
+    if (statements_ != NULL)
+        statements_->Multiple(out);
+}
+
 void CYProperty::Output(CYOutput &out) const {
+    out << '\t';
     name_->PropertyName(out);
     out << ':' << ' ';
     value_->Output(out, CYPA, CYNoFlags);
     if (next_ != NULL)
-        out << ',' << ' ' << *next_;
+        out << ',' << '\n' << *next_;
+    else
+        out << '\n';
 }
 
 void CYRegEx::Output(CYOutput &out, CYFlags flags) const {
@@ -641,41 +595,10 @@ void CYRegEx::Output(CYOutput &out, CYFlags flags) const {
 }
 
 void CYReturn::Output(CYOutput &out, CYFlags flags) const {
-    out << "return" << value_ << ';';
-}
-
-void CYSelector::Output(CYOutput &out, CYFlags flags) const {
-    out << "new Selector(\"";
-    if (name_ != NULL)
-        name_->Output(out);
-    out << "\")";
-}
-
-void CYSelectorPart::Output(CYOutput &out) const {
-    out << name_;
-    if (value_)
-        out << ':';
-    out << next_;
-}
-
-void CYSend::Output(CYOutput &out, CYFlags flags) const {
-    out << "objc_msgSend(";
-    self_->Output(out, CYPA, CYNoFlags);
-    out << ',';
-    std::ostringstream name;
-    for (CYArgument *argument(arguments_); argument != NULL; argument = argument->next_)
-        if (argument->name_ != NULL) {
-            name << *argument->name_;
-            if (argument->value_ != NULL)
-                name << ':';
-        }
-    out.out_ << reinterpret_cast<void *>(sel_registerName(name.str().c_str()));
-    for (CYArgument *argument(arguments_); argument != NULL; argument = argument->next_)
-        if (argument->value_ != NULL) {
-            out << ',';
-            argument->value_->Output(out, CYPA, CYNoFlags);
-        }
-    out << ')';
+    out << "return";
+    if (value_ != NULL)
+        out << ' ' << *value_;
+    out << ';';
 }
 
 void CYStatement::Multiple(CYOutput &out, CYFlags flags) const {
@@ -684,80 +607,25 @@ void CYStatement::Multiple(CYOutput &out, CYFlags flags) const {
         bool last(next->next_ == NULL);
         CYFlags jacks(first ? last ? flags : CYLeft(flags) : last ? CYCenter(flags) : CYRight(flags));
         first = false;
-        out.Indent();
+        out << '\t';
         next->Output(out, jacks);
-        if (out.pretty_)
-            out << '\n';
+        out << '\n';
     }
 }
 
 void CYStatement::Single(CYOutput &out, CYFlags flags) const {
-    if (next_ != NULL) {
-        out << ' ' << '{';
-        if (out.pretty_)
-            out << '\n';
-        ++out.indent_;
-        Multiple(out);
-        --out.indent_;
-        out.Indent();
-        out << '}';
-    } else {
-        if (out.pretty_)
-            out << '\n';
-        for (CYLabel *label(labels_); label != NULL; label = label->next_)
-            out << *label->name_ << ':' << ' ';
-        ++out.indent_;
-        out.Indent();
-        Output(out, flags);
-        --out.indent_;
-        if (out.pretty_)
-            out << '\n';
-    }
+    _assert(next_ == NULL);
+    out << '\n';
+    ++out.indent_;
+    out << '\t';
+    Output(out, flags);
+    out << '\n';
+    --out.indent_;
 }
 
 void CYString::Output(CYOutput &out, CYFlags flags) const {
-    unsigned quot(0), apos(0);
-    for (const char *value(value_), *end(value_ + size_); value != end; ++value)
-        if (*value == '"')
-            ++quot;
-        else if (*value == '\'')
-            ++apos;
-
-    bool single(quot > apos);
-
     std::ostringstream str;
-
-    str << (single ? '\'' : '"');
-    for (const char *value(value_), *end(value_ + size_); value != end; ++value)
-        switch (*value) {
-            case '\\': str << "\\\\"; break;
-            case '\b': str << "\\b"; break;
-            case '\f': str << "\\f"; break;
-            case '\n': str << "\\n"; break;
-            case '\r': str << "\\r"; break;
-            case '\t': str << "\\t"; break;
-            case '\v': str << "\\v"; break;
-
-            case '"':
-                if (!single)
-                    str << "\\\"";
-                else goto simple;
-            break;
-
-            case '\'':
-                if (single)
-                    str << "\\'";
-                else goto simple;
-            break;
-
-            default:
-                if (*value < 0x20 || *value >= 0x7f)
-                    str << "\\x" << std::setbase(16) << std::setw(2) << std::setfill('0') << unsigned(*value);
-                else simple:
-                    str << *value;
-        }
-    str << (single ? '\'' : '"');
-
+    CYStringify(str, value_, size_);
     out << str.str().c_str();
 }
 
@@ -768,6 +636,28 @@ void CYString::PropertyName(CYOutput &out) const {
         out << *this;
 }
 
+static const char *Reserved_[] = {
+    "false", "null", "true",
+
+    "break", "case", "catch", "continue", "default",
+    "delete", "do", "else", "finally", "for", "function",
+    "if", "in", "instanceof", "new", "return", "switch",
+    "this", "throw", "try", "typeof", "var", "void",
+    "while", "with",
+
+    "debugger", "const",
+
+    "class", "enum", "export", "extends", "import", "super",
+
+    "abstract", "boolean", "byte", "char", "double", "final",
+    "float", "goto", "int", "long", "native", "short",
+    "synchronized", "throws", "transient", "volatile",
+
+    "let", "yield",
+
+    NULL
+};
+
 const char *CYString::Word() const {
     if (size_ == 0 || !WordStartRange_[value_[0]])
         return NULL;
@@ -775,9 +665,7 @@ const char *CYString::Word() const {
         if (!WordEndRange_[value_[i]])
             return NULL;
     const char *value(Value());
-    // XXX: we should probably include the full ECMAScript3+5 list.
-    static const char *reserveds[] = {"class", "const", "enum", "export", "extends", "import", "super", NULL};
-    for (const char **reserved(reserveds); *reserved != NULL; ++reserved)
+    for (const char **reserved(Reserved_); *reserved != NULL; ++reserved)
         if (strcmp(*reserved, value) == 0)
             return NULL;
     return value;
@@ -793,19 +681,22 @@ void CYThis::Output(CYOutput &out, CYFlags flags) const {
     CYWord::Output(out);
 }
 
-void CYThrow::Output(CYOutput &out, CYFlags flags) const {
-    out << "throw" << value_ << ';';
+namespace cy {
+namespace Syntax {
+
+void Throw::Output(CYOutput &out, CYFlags flags) const {
+    out << "throw";
+    if (value_ != NULL)
+        out << ' ' << *value_;
+    out << ';';
 }
 
-void CYTry::Output(CYOutput &out, CYFlags flags) const {
-    out << "try" << ' ' << '{';
-    if (code_ != NULL)
-        code_->Multiple(out);
-    out << '}';
-    out << catch_;
-    out << finally_;
+void Try::Output(CYOutput &out, CYFlags flags) const {
+    out << "try" << ' ' << code_ << catch_ << finally_;
 }
 
+} }
+
 void CYVar::Output(CYOutput &out, CYFlags flags) const {
     out << "var";
     declarations_->Output(out, flags);
@@ -829,15 +720,21 @@ void CYWith::Output(CYOutput &out, CYFlags flags) const {
 void CYWord::ClassName(CYOutput &out, bool object) const {
     if (object)
         out << "objc_getClass(";
-    out << '"' << Value() << '"';
+    out << '"' << Word() << '"';
     if (object)
         out << ')';
 }
 
 void CYWord::Output(CYOutput &out) const {
-    out << Value();
+    out << Word();
+    if (out.options_.verbose_)
+        out.out_ << '@' << this;
 }
 
 void CYWord::PropertyName(CYOutput &out) const {
     Output(out);
 }
+
+const char *CYWord::Word() const {
+    return word_;
+}