Use variadic templates to better organize Classes.

[cycript.git] / Syntax.hpp

diff --git a/Syntax.hpp b/Syntax.hpp
index a70e4a31ad7f7520c9a7b766cf8205b809b188fa..a3f03fab47eaca021196368cdc7cd29e965986ed 100644 (file)
--- a/Syntax.hpp
+++ b/Syntax.hpp
@@ -28,13 +28,23 @@
 #include <streambuf>
 #include <string>
 #include <vector>
 #include <streambuf>
 #include <string>
 #include <vector>

-#include <map>
-#include <set>

 
 #include "List.hpp"
 #include "Location.hpp"
 #include "Options.hpp"
 #include "Pooling.hpp"
 
 #include "List.hpp"
 #include "Location.hpp"
 #include "Options.hpp"
 #include "Pooling.hpp"

+#include "String.hpp"
+
+double CYCastDouble(const char *value, size_t size);
+double CYCastDouble(const char *value);
+double CYCastDouble(CYUTF8String value);
+
+void CYNumerify(std::ostringstream &str, double value);
+void CYStringify(std::ostringstream &str, const char *data, size_t size, bool c = false);
+
+// XXX: this really should not be here ... :/
+void *CYPoolFile(CYPool &pool, const char *path, size_t *psize);
+CYUTF8String CYPoolFileUTF8String(CYPool &pool, const char *path);

 
 struct CYContext;
 
 
 struct CYContext;
 


@@ -78,15 +88,15 @@ struct CYOutput {
         _assert(out_.sputc(value) != EOF);
         recent_ = indent_;
         if (value == '\n')
         _assert(out_.sputc(value) != EOF);
         recent_ = indent_;
         if (value == '\n')

-            position_.lines(1);
+            position_.Lines(1);

         else
         else

-            position_.columns(1);
+            position_.Columns(1);

     }
 
     _finline void operator ()(const char *data, std::streamsize size) {
         _assert(out_.sputn(data, size) == size);
         recent_ = indent_;
     }
 
     _finline void operator ()(const char *data, std::streamsize size) {
         _assert(out_.sputn(data, size) == size);
         recent_ = indent_;

-        position_.columns(size);
+        position_.Columns(size);

     }
 
     _finline void operator ()(const char *data) {
     }
 
     _finline void operator ()(const char *data) {


@@ -108,13 +118,22 @@ struct CYOutput {
     }
 };
 
     }
 };
 

+struct CYExpression;
+struct CYAssignment;
+

 struct CYPropertyName {
 struct CYPropertyName {

+    virtual bool Computed() const {
+        return false;
+    }
+
+    virtual bool Constructor() const {
+        return false;
+    }
+
+    virtual CYExpression *PropertyName(CYContext &context) = 0;

     virtual void PropertyName(CYOutput &out) const = 0;
 };
 
     virtual void PropertyName(CYOutput &out) const = 0;
 };
 

-struct CYExpression;
-struct CYAssignment;
-

 enum CYNeeded {
     CYNever     = -1,
     CYSometimes =  0,
 enum CYNeeded {
     CYNever     = -1,
     CYSometimes =  0,


@@ -125,12 +144,14 @@ enum CYFlags {
     CYNoFlags =      0,
     CYNoBrace =      (1 << 0),
     CYNoFunction =   (1 << 1),
     CYNoFlags =      0,
     CYNoBrace =      (1 << 0),
     CYNoFunction =   (1 << 1),

-    CYNoIn =         (1 << 2),
-    CYNoCall =       (1 << 3),
-    CYNoRightHand =  (1 << 4),
-    CYNoDangle =     (1 << 5),
-    CYNoInteger =    (1 << 6),
-    CYNoBF =         (CYNoBrace | CYNoFunction),
+    CYNoClass =      (1 << 2),
+    CYNoIn =         (1 << 3),
+    CYNoCall =       (1 << 4),
+    CYNoRightHand =  (1 << 5),
+    CYNoDangle =     (1 << 6),
+    CYNoInteger =    (1 << 7),
+    CYNoColon =      (1 << 8),
+    CYNoBFC =        (CYNoBrace | CYNoFunction | CYNoClass),

 };
 
 _finline CYFlags operator ~(CYFlags rhs) {
 };
 
 _finline CYFlags operator ~(CYFlags rhs) {


@@ -154,7 +175,7 @@ _finline CYFlags CYLeft(CYFlags flags) {
 }
 
 _finline CYFlags CYRight(CYFlags flags) {
 }
 
 _finline CYFlags CYRight(CYFlags flags) {

-    return flags & ~CYNoBF;
+    return flags & ~CYNoBFC;

 }
 
 _finline CYFlags CYCenter(CYFlags flags) {
 }
 
 _finline CYFlags CYCenter(CYFlags flags) {


@@ -189,44 +210,18 @@ struct CYStatement :
     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 };
 

-struct CYStatements {
-    CYStatement *first_;
-    CYStatement *last_;
-
-    CYStatements() :
-        first_(NULL),
-        last_(NULL)
-    {
-    }
-
-    operator CYStatement *() const {
-        return first_;
-    }
-
-    CYStatements &operator ->*(CYStatement *next) {
-        if (next != NULL)
-            if (first_ == NULL) {
-                first_ = next;
-                last_ = next;
-            } else for (;; last_ = last_->next_)
-                if (last_->next_ == NULL) {
-                    last_->next_ = next;
-                    last_ = next;
-                    break;
-                }
-        return *this;
-    }
-};
+typedef CYList<CYStatement> CYStatements;

 
 

-struct CYClassName {
-    virtual CYExpression *ClassName(CYContext &context, bool object) = 0;
-    virtual void ClassName(CYOutput &out, bool object) const = 0;
+struct CYForInitializer :
+    CYStatement
+{
+    virtual CYForInitializer *Replace(CYContext &context) = 0;
+    virtual void Output(CYOutput &out, CYFlags flags) const = 0;

 };
 
 struct CYWord :
     CYThing,
 };
 
 struct CYWord :
     CYThing,

-    CYPropertyName,
-    CYClassName
+    CYPropertyName

 {
     const char *word_;
 
 {
     const char *word_;
 


@@ -235,15 +230,14 @@ struct CYWord :
     {
     }
 
     {
     }
 

-    void Set(const char *value) {
-        word_ = value;
+    virtual bool Constructor() const {
+        return strcmp(word_, "constructor") == 0;

     }
 
     virtual const char *Word() const;
     virtual void Output(CYOutput &out) const;
 
     }
 
     virtual const char *Word() const;
     virtual void Output(CYOutput &out) const;
 

-    virtual CYExpression *ClassName(CYContext &context, bool object);
-    virtual void ClassName(CYOutput &out, bool object) const;
+    virtual CYExpression *PropertyName(CYContext &context);

     virtual void PropertyName(CYOutput &out) const;
 };
 
     virtual void PropertyName(CYOutput &out) const;
 };
 


@@ -252,24 +246,33 @@ _finline std::ostream &operator <<(std::ostream &lhs, const CYWord &rhs) {
     return lhs << rhs.Word();
 }
 
     return lhs << rhs.Word();
 }
 

+enum CYIdentifierKind {
+    CYIdentifierArgument,
+    CYIdentifierCatch,
+    CYIdentifierGlobal,
+    CYIdentifierLexical,
+    CYIdentifierMagic,
+    CYIdentifierOther,
+    CYIdentifierVariable,
+};
+

 struct CYIdentifier :
     CYNext<CYIdentifier>,
     CYWord
 {
 struct CYIdentifier :
     CYNext<CYIdentifier>,
     CYWord
 {

-    CYIdentifier *replace_;
+    CYLocation location_;

     size_t offset_;
     size_t usage_;
 
     CYIdentifier(const char *word) :
         CYWord(word),
     size_t offset_;
     size_t usage_;
 
     CYIdentifier(const char *word) :
         CYWord(word),

-        replace_(NULL),

         offset_(0),
         usage_(0)
     {
     }
 
     virtual const char *Word() const;
         offset_(0),
         usage_(0)
     {
     }
 
     virtual const char *Word() const;

-    CYIdentifier *Replace(CYContext &context);
+    CYIdentifier *Replace(CYContext &context, CYIdentifierKind);

 };
 
 struct CYLabel :
 };
 
 struct CYLabel :


@@ -306,38 +309,43 @@ struct CYIdentifierValueLess :
     }
 };
 
     }
 };
 

-enum CYIdentifierFlags {
-    CYIdentifierArgument,
-    CYIdentifierVariable,
-    CYIdentifierOther,
-    CYIdentifierMagic,
-    CYIdentifierCatch,
-};
-
-typedef std::set<const char *, CYCStringLess> CYCStringSet;
-typedef std::set<CYIdentifier *, CYIdentifierValueLess> CYIdentifierValueSet;
-typedef std::map<CYIdentifier *, CYIdentifierFlags> CYIdentifierAddressFlagsMap;
-
-struct CYIdentifierUsage {
+struct CYIdentifierFlags :
+    CYNext<CYIdentifierFlags>
+{

     CYIdentifier *identifier_;
     CYIdentifier *identifier_;

-    size_t usage_;
-};
+    CYIdentifierKind kind_;
+    unsigned count_;
+    unsigned offset_;

 
 

-typedef std::vector<CYIdentifierUsage> CYIdentifierUsageVector;
+    CYIdentifierFlags(CYIdentifier *identifier, CYIdentifierKind kind, CYIdentifierFlags *next = NULL) :
+        CYNext<CYIdentifierFlags>(next),
+        identifier_(identifier),
+        kind_(kind),
+        count_(0),
+        offset_(0)
+    {
+    }
+};

 
 struct CYScope {
     bool transparent_;
     CYScope *parent_;
 
 struct CYScope {
     bool transparent_;
     CYScope *parent_;

+    bool damaged_;
+    CYIdentifierFlags *shadow_;

 
 

-    CYIdentifierAddressFlagsMap internal_;
-    CYIdentifierValueSet identifiers_;
+    CYIdentifierFlags *internal_;

 
     CYScope(bool transparent, CYContext &context);
 
 
     CYScope(bool transparent, CYContext &context);
 

-    void Declare(CYContext &context, CYIdentifier *identifier, CYIdentifierFlags flags);
-    virtual CYIdentifier *Lookup(CYContext &context, CYIdentifier *identifier);
-    void Merge(CYContext &context, CYIdentifier *identifier);
+    CYIdentifierFlags *Lookup(CYContext &context, const char *word);
+    CYIdentifierFlags *Lookup(CYContext &context, CYIdentifier *identifier);
+
+    CYIdentifierFlags *Declare(CYContext &context, CYIdentifier *identifier, CYIdentifierKind kind);
+    void Merge(CYContext &context, const CYIdentifierFlags *flags);
+

     void Close(CYContext &context, CYStatement *&statements);
     void Close(CYContext &context, CYStatement *&statements);

+    void Close(CYContext &context);
+    void Damage();

 };
 
 struct CYScript :
 };
 
 struct CYScript :


@@ -362,17 +370,19 @@ struct CYContext {
 
     CYScope *scope_;
     CYThisScope *this_;
 
     CYScope *scope_;
     CYThisScope *this_;

-
-    CYIdentifierUsageVector rename_;
+    CYIdentifier *super_;

 
     CYNonLocal *nonlocal_;
     CYNonLocal *nextlocal_;
     unsigned unique_;
 
 
     CYNonLocal *nonlocal_;
     CYNonLocal *nextlocal_;
     unsigned unique_;
 

+    std::vector<CYIdentifier *> replace_;
+

     CYContext(CYOptions &options) :
         options_(options),
         scope_(NULL),
         this_(NULL),
     CYContext(CYOptions &options) :
         options_(options),
         scope_(NULL),
         this_(NULL),

+        super_(NULL),

         nonlocal_(NULL),
         nextlocal_(NULL),
         unique_(0)
         nonlocal_(NULL),
         nextlocal_(NULL),
         unique_(0)


@@ -462,18 +472,13 @@ struct CYBlock :
     virtual CYStatement *Return();
 };
 
     virtual CYStatement *Return();
 };
 

-struct CYForInitializer {
-    virtual CYExpression *Replace(CYContext &context) = 0;
-    virtual void Output(CYOutput &out, CYFlags flags) const = 0;
-};
+struct CYTarget;
+struct CYVar;

 
 struct CYForInInitializer {
 
 struct CYForInInitializer {

-    virtual void ForIn(CYOutput &out, CYFlags flags) const = 0;
-    virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value) = 0;
-
-    virtual CYExpression *Replace(CYContext &context) = 0;
-    virtual CYAssignment *Assignment(CYContext &context) = 0;
+    virtual CYStatement *Initialize(CYContext &context, CYExpression *value) = 0;

 
 

+    virtual CYTarget *Replace(CYContext &context) = 0;

     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 };
 


@@ -483,9 +488,6 @@ struct CYNumber;
 struct CYString;
 
 struct CYExpression :
 struct CYString;
 
 struct CYExpression :

-    CYForInitializer,
-    CYForInInitializer,
-    CYClassName,

     CYThing
 {
     virtual int Precedence() const = 0;
     CYThing
 {
     virtual int Precedence() const = 0;


@@ -494,20 +496,17 @@ struct CYExpression :
         return true;
     }
 
         return true;
     }
 

-    virtual void ForIn(CYOutput &out, CYFlags flags) const;
-    virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value);
+    virtual bool Eval() const {
+        return false;
+    }

 
 

-    virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
+    virtual CYTarget *AddArgument(CYContext &context, CYExpression *value);

 
     virtual void Output(CYOutput &out) const;
     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
     void Output(CYOutput &out, int precedence, CYFlags flags) const;
 
 
     virtual void Output(CYOutput &out) const;
     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
     void Output(CYOutput &out, int precedence, CYFlags flags) const;
 

-    virtual CYExpression *ClassName(CYContext &context, bool object);
-    virtual void ClassName(CYOutput &out, bool object) const;
-

     virtual CYExpression *Replace(CYContext &context) = 0;
     virtual CYExpression *Replace(CYContext &context) = 0;

-    virtual CYAssignment *Assignment(CYContext &context);

 
     virtual CYExpression *Primitive(CYContext &context) {
         return NULL;
 
     virtual CYExpression *Primitive(CYContext &context) {
         return NULL;


@@ -528,6 +527,20 @@ struct CYExpression :
     }
 };
 
     }
 };
 

+struct CYTarget :
+    CYExpression,
+    CYForInInitializer
+{
+    virtual bool RightHand() const {
+        return false;
+    }
+
+    virtual CYStatement *Initialize(CYContext &context, CYExpression *value);
+
+    virtual CYTarget *Replace(CYContext &context) = 0;
+    using CYExpression::Output;
+};
+

 #define CYAlphabetic(value) \
     virtual bool Alphabetic() const { \
         return value; \
 #define CYAlphabetic(value) \
     virtual bool Alphabetic() const { \
         return value; \


@@ -539,11 +552,6 @@ struct CYExpression :
         return Precedence_; \
     }
 
         return Precedence_; \
     }
 

-#define CYRightHand(value) \
-    virtual bool RightHand() const { \
-        return value; \
-    }
-

 struct CYCompound :
     CYExpression
 {
 struct CYCompound :
     CYExpression
 {


@@ -567,7 +575,7 @@ struct CYCompound :
 };
 
 struct CYParenthetical :
 };
 
 struct CYParenthetical :

-    CYExpression
+    CYTarget

 {
     CYExpression *expression_;
 
 {
     CYExpression *expression_;
 


@@ -578,21 +586,21 @@ struct CYParenthetical :
 
     CYPrecedence(0)
 
 
     CYPrecedence(0)
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     void Output(CYOutput &out, CYFlags flags) const;
 };
 
     void Output(CYOutput &out, CYFlags flags) const;
 };
 

-struct CYDeclaration;
+struct CYBinding;

 
 struct CYFunctionParameter :
     CYNext<CYFunctionParameter>,
     CYThing
 {
 
 struct CYFunctionParameter :
     CYNext<CYFunctionParameter>,
     CYThing
 {

-    CYForInInitializer *initialiser_;
+    CYBinding *binding_;

 
 

-    CYFunctionParameter(CYForInInitializer *initialiser, CYFunctionParameter *next = NULL) :
+    CYFunctionParameter(CYBinding *binding, CYFunctionParameter *next = NULL) :

         CYNext<CYFunctionParameter>(next),
         CYNext<CYFunctionParameter>(next),

-        initialiser_(initialiser)
+        binding_(binding)

     {
     }
 
     {
     }
 


@@ -609,11 +617,6 @@ struct CYComprehension :
     {
     }
 
     {
     }
 

-    CYComprehension *Modify(CYComprehension *next) {
-        next_ = next;
-        return this;
-    }
-

     virtual CYFunctionParameter *Parameter(CYContext &context) const = 0;
     CYFunctionParameter *Parameters(CYContext &context) const;
     virtual CYStatement *Replace(CYContext &context, CYStatement *statement) const;
     virtual CYFunctionParameter *Parameter(CYContext &context) const = 0;
     CYFunctionParameter *Parameters(CYContext &context) const;
     virtual CYStatement *Replace(CYContext &context, CYStatement *statement) const;


@@ -623,13 +626,13 @@ struct CYComprehension :
 struct CYForInComprehension :
     CYComprehension
 {
 struct CYForInComprehension :
     CYComprehension
 {

-    CYDeclaration *declaration_;
-    CYExpression *set_;
+    CYBinding *binding_;
+    CYExpression *iterable_;

 
 

-    CYForInComprehension(CYDeclaration *declaration, CYExpression *set, CYComprehension *next = NULL) :
+    CYForInComprehension(CYBinding *binding, CYExpression *iterable, CYComprehension *next = NULL) :

         CYComprehension(next),
         CYComprehension(next),

-        declaration_(declaration),
-        set_(set)
+        binding_(binding),
+        iterable_(iterable)

     {
     }
 
     {
     }
 


@@ -641,13 +644,13 @@ struct CYForInComprehension :
 struct CYForOfComprehension :
     CYComprehension
 {
 struct CYForOfComprehension :
     CYComprehension
 {

-    CYDeclaration *declaration_;
-    CYExpression *set_;
+    CYBinding *binding_;
+    CYExpression *iterable_;

 
 

-    CYForOfComprehension(CYDeclaration *declaration, CYExpression *set, CYComprehension *next = NULL) :
+    CYForOfComprehension(CYBinding *binding, CYExpression *iterable, CYComprehension *next = NULL) :

         CYComprehension(next),
         CYComprehension(next),

-        declaration_(declaration),
-        set_(set)
+        binding_(binding),
+        iterable_(iterable)

     {
     }
 
     {
     }
 


@@ -673,7 +676,7 @@ struct CYIfComprehension :
 };
 
 struct CYArrayComprehension :
 };
 
 struct CYArrayComprehension :

-    CYExpression
+    CYTarget

 {
     CYExpression *expression_;
     CYComprehension *comprehensions_;
 {
     CYExpression *expression_;
     CYComprehension *comprehensions_;


@@ -686,15 +689,16 @@ struct CYArrayComprehension :
 
     CYPrecedence(0)
 
 
     CYPrecedence(0)
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYLiteral :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYLiteral :

-    CYExpression
+    CYTarget

 {
 {

+    CYLocation location_;
+

     CYPrecedence(0)
     CYPrecedence(0)

-    CYRightHand(false)

 
     virtual CYExpression *Primitive(CYContext &context) {
         return this;
 
     virtual CYExpression *Primitive(CYContext &context) {
         return this;


@@ -704,14 +708,13 @@ struct CYLiteral :
 struct CYTrivial :
     CYLiteral
 {
 struct CYTrivial :
     CYLiteral
 {

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

 };
 
 struct CYMagic :
 };
 
 struct CYMagic :

-    CYExpression
+    CYTarget

 {
     CYPrecedence(0)
 {
     CYPrecedence(0)

-    CYRightHand(false)

 };
 
 struct CYRange {
 };
 
 struct CYRange {


@@ -780,6 +783,8 @@ struct CYString :
 
     CYString *Concat(CYContext &out, CYString *rhs) const;
     virtual void Output(CYOutput &out, CYFlags flags) const;
 
     CYString *Concat(CYContext &out, CYString *rhs) const;
     virtual void Output(CYOutput &out, CYFlags flags) const;

+
+    virtual CYExpression *PropertyName(CYContext &context);

     virtual void PropertyName(CYOutput &out) const;
 };
 
     virtual void PropertyName(CYOutput &out) const;
 };
 


@@ -802,7 +807,7 @@ struct CYSpan :
 };
 
 struct CYTemplate :
 };
 
 struct CYTemplate :

-    CYExpression
+    CYTarget

 {
     CYString *string_;
     CYSpan *spans_;
 {
     CYString *string_;
     CYSpan *spans_;


@@ -814,9 +819,8 @@ struct CYTemplate :
     }
 
     CYPrecedence(0)
     }
 
     CYPrecedence(0)

-    CYRightHand(false)

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -839,6 +843,26 @@ struct CYNumber :
     virtual CYString *String(CYContext &context);
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
     virtual CYString *String(CYContext &context);
 
     virtual void Output(CYOutput &out, CYFlags flags) const;

+
+    virtual CYExpression *PropertyName(CYContext &context);
+    virtual void PropertyName(CYOutput &out) const;
+};
+
+struct CYComputed :
+    CYPropertyName
+{
+    CYExpression *expression_;
+
+    CYComputed(CYExpression *expression) :
+        expression_(expression)
+    {
+    }
+
+    virtual bool Computed() const {
+        return true;
+    }
+
+    virtual CYExpression *PropertyName(CYContext &context);

     virtual void PropertyName(CYOutput &out) const;
 };
 
     virtual void PropertyName(CYOutput &out) const;
 };
 


@@ -873,13 +897,19 @@ struct CYNull :
 struct CYThis :
     CYMagic
 {
 struct CYThis :
     CYMagic
 {

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYBoolean :
     CYTrivial
 {
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYBoolean :
     CYTrivial
 {

+    CYPrecedence(4)
+
+    virtual bool RightHand() const {
+        return true;
+    }
+

     virtual bool Value() const = 0;
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
     virtual bool Value() const = 0;
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };


@@ -907,7 +937,7 @@ struct CYTrue :
 };
 
 struct CYVariable :
 };
 
 struct CYVariable :

-    CYExpression
+    CYTarget

 {
     CYIdentifier *name_;
 
 {
     CYIdentifier *name_;
 


@@ -922,14 +952,33 @@ struct CYVariable :
     }
 
     CYPrecedence(0)
     }
 
     CYPrecedence(0)

-    CYRightHand(false)

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual bool Eval() const {
+        return strcmp(name_->Word(), "eval") == 0;
+    }
+
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 
     virtual CYFunctionParameter *Parameter() const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 
     virtual CYFunctionParameter *Parameter() const;
 };
 

+struct CYSymbol :
+    CYTarget
+{
+    const char *name_;
+
+    CYSymbol(const char *name) :
+        name_(name)
+    {
+    }
+
+    CYPrecedence(0)
+
+    virtual CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+

 struct CYPrefix :
     CYExpression
 {
 struct CYPrefix :
     CYExpression
 {


@@ -993,17 +1042,17 @@ struct CYPostfix :
 struct CYAssignment :
     CYExpression
 {
 struct CYAssignment :
     CYExpression
 {

-    CYExpression *lhs_;
+    CYTarget *lhs_;

     CYExpression *rhs_;
 
     CYExpression *rhs_;
 

-    CYAssignment(CYExpression *lhs, CYExpression *rhs) :
+    CYAssignment(CYTarget *lhs, CYExpression *rhs) :

         lhs_(lhs),
         rhs_(rhs)
     {
     }
 
         lhs_(lhs),
         rhs_(rhs)
     {
     }
 

-    void SetLeft(CYExpression *lhs) {
-        lhs_ = lhs;
+    void SetRight(CYExpression *rhs) {
+        rhs_ = rhs;

     }
 
     virtual const char *Operator() const = 0;
     }
 
     virtual const char *Operator() const = 0;


@@ -1043,11 +1092,11 @@ struct CYClause :
     CYThing,
     CYNext<CYClause>
 {
     CYThing,
     CYNext<CYClause>
 {

-    CYExpression *case_;
+    CYExpression *value_;

     CYStatement *code_;
 
     CYStatement *code_;
 

-    CYClause(CYExpression *_case, CYStatement *code) :
-        case_(_case),
+    CYClause(CYExpression *value, CYStatement *code) :
+        value_(value),

         code_(code)
     {
     }
         code_(code)
     {
     }


@@ -1057,21 +1106,26 @@ struct CYClause :
 };
 
 struct CYElement :
 };
 
 struct CYElement :

+    CYNext<CYElement>,

     CYThing
 {
     CYThing
 {

+    CYElement(CYElement *next) :
+        CYNext<CYElement>(next)
+    {
+    }
+

     virtual bool Elision() const = 0;
 
     virtual void Replace(CYContext &context) = 0;
 };
 
 struct CYElementValue :
     virtual bool Elision() const = 0;
 
     virtual void Replace(CYContext &context) = 0;
 };
 
 struct CYElementValue :

-    CYNext<CYElement>,

     CYElement
 {
     CYExpression *value_;
 
     CYElement
 {
     CYExpression *value_;
 

-    CYElementValue(CYExpression *value, CYElement *next) :
-        CYNext<CYElement>(next),
+    CYElementValue(CYExpression *value, CYElement *next = NULL) :
+        CYElement(next),

         value_(value)
     {
     }
         value_(value)
     {
     }


@@ -1089,7 +1143,8 @@ struct CYElementSpread :
 {
     CYExpression *value_;
 
 {
     CYExpression *value_;
 

-    CYElementSpread(CYExpression *value) :
+    CYElementSpread(CYExpression *value, CYElement *next = NULL) :
+        CYElement(next),

         value_(value)
     {
     }
         value_(value)
     {
     }


@@ -1112,67 +1167,74 @@ struct CYArray :
     {
     }
 
     {
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

-struct CYProperty :
-    CYNext<CYProperty>,
-    CYThing
-{
-    CYPropertyName *name_;
-    CYExpression *value_;
+struct CYBinding {
+    CYIdentifier *identifier_;
+    CYExpression *initializer_;

 
 

-    CYProperty(CYPropertyName *name, CYExpression *value, CYProperty *next = NULL) :
-        CYNext<CYProperty>(next),
-        name_(name),
-        value_(value)
+    CYBinding(CYIdentifier *identifier, CYExpression *initializer = NULL) :
+        identifier_(identifier),
+        initializer_(initializer)

     {
     }
 
     {
     }
 

-    void Replace(CYContext &context);
-    virtual void Output(CYOutput &out) const;
+    CYTarget *Target(CYContext &context);
+
+    virtual CYAssignment *Replace(CYContext &context, CYIdentifierKind kind);
+    virtual void Output(CYOutput &out, CYFlags flags) const;

 };
 
 };
 

-struct CYDeclaration :
+struct CYForLexical :

     CYForInInitializer
 {
     CYForInInitializer
 {

-    CYIdentifier *identifier_;
-    CYExpression *initialiser_;
+    bool constant_;
+    CYBinding *binding_;

 
 

-    CYDeclaration(CYIdentifier *identifier, CYExpression *initialiser = NULL) :
-        identifier_(identifier),
-        initialiser_(initialiser)
+    CYForLexical(bool constant, CYBinding *binding) :
+        constant_(constant),
+        binding_(binding)

     {
     }
 
     {
     }
 

-    virtual void ForIn(CYOutput &out, CYFlags flags) const;
-    virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value);
+    virtual CYStatement *Initialize(CYContext &context, CYExpression *value);

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+struct CYForVariable :
+    CYForInInitializer
+{
+    CYBinding *binding_;
+
+    CYForVariable(CYBinding *binding) :
+        binding_(binding)
+    {
+    }

 
 

-    virtual CYAssignment *Assignment(CYContext &context);
-    CYVariable *Variable(CYContext &context);
+    virtual CYStatement *Initialize(CYContext &context, CYExpression *value);

 
 

+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

-struct CYDeclarations :
-    CYNext<CYDeclarations>,
+struct CYBindings :
+    CYNext<CYBindings>,

     CYThing
 {
     CYThing
 {

-    CYDeclaration *declaration_;
+    CYBinding *binding_;

 
 

-    CYDeclarations(CYDeclaration *declaration, CYDeclarations *next = NULL) :
-        CYNext<CYDeclarations>(next),
-        declaration_(declaration)
+    CYBindings(CYBinding *binding, CYBindings *next = NULL) :
+        CYNext<CYBindings>(next),
+        binding_(binding)

     {
     }
 
     {
     }
 

-    void Replace(CYContext &context);
+    CYExpression *Replace(CYContext &context, CYIdentifierKind kind);

 
 

-    CYExpression *Expression(CYContext &context);
-    CYProperty *Property(CYContext &context);

     CYArgument *Argument(CYContext &context);
     CYFunctionParameter *Parameter(CYContext &context);
 
     CYArgument *Argument(CYContext &context);
     CYFunctionParameter *Parameter(CYContext &context);
 


@@ -1180,64 +1242,98 @@ struct CYDeclarations :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

-struct CYForDeclarations :
+struct CYVar :

     CYForInitializer
 {
     CYForInitializer
 {

-    CYDeclarations *declarations_;
+    CYBindings *bindings_;

 
 

-    CYForDeclarations(CYDeclarations *declarations) :
-        declarations_(declarations)
+    CYVar(CYBindings *bindings) :
+        bindings_(bindings)

     {
     }
 
     {
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    CYCompact(None)
+
+    virtual CYForInitializer *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

-struct CYVar :
-    CYStatement
+struct CYLexical :
+    CYForInitializer

 {
 {

-    CYDeclarations *declarations_;
+    bool constant_;
+    CYBindings *bindings_;

 
 

-    CYVar(CYDeclarations *declarations) :
-        declarations_(declarations)
+    CYLexical(bool constant, CYBindings *bindings) :
+        constant_(constant),
+        bindings_(bindings)

     {
     }
 
     CYCompact(None)
 
     {
     }
 
     CYCompact(None)
 

-    virtual CYStatement *Replace(CYContext &context);
+    virtual CYForInitializer *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

-struct CYLetStatement :
-    CYStatement
+struct CYBuilder {
+    CYList<CYBindings> bindings_;
+    CYList<CYStatement> statements_;
+
+    operator bool() const {
+        return statements_ != NULL;
+    }
+};
+
+struct CYProperty :
+    CYNext<CYProperty>,
+    CYThing

 {
 {

-    CYDeclarations *declarations_;
-    CYStatement *code_;
+    CYPropertyName *name_;

 
 

-    CYLetStatement(CYDeclarations *declarations, CYStatement *code) :
-        declarations_(declarations),
-        code_(code)
+    CYProperty(CYPropertyName *name, CYProperty *next = NULL) :
+        CYNext<CYProperty>(next),
+        name_(name)

     {
     }
 
     {
     }
 

-    CYCompact(Long)
+    virtual bool Update() const;

 
 

-    virtual CYStatement *Replace(CYContext &context);
-    virtual void Output(CYOutput &out, CYFlags flags) const;
+    CYProperty *ReplaceAll(CYContext &context, CYBuilder &builder, CYExpression *self, bool update);
+    void Replace(CYContext &context, CYBuilder &builder, CYExpression *self, bool protect);
+
+    virtual void Replace(CYContext &context, CYBuilder &builder, CYExpression *self, CYExpression *name, bool protect) = 0;
+
+    virtual void Replace(CYContext &context) = 0;
+    virtual void Output(CYOutput &out) const;
+};
+
+struct CYPropertyValue :
+    CYProperty
+{
+    CYExpression *value_;
+
+    CYPropertyValue(CYPropertyName *name, CYExpression *value, CYProperty *next = NULL) :
+        CYProperty(name, next),
+        value_(value)
+    {
+    }
+
+    virtual void Replace(CYContext &context, CYBuilder &builder, CYExpression *self, CYExpression *name, bool protect);
+    virtual void Replace(CYContext &context);
+    virtual void Output(CYOutput &out) const;

 };
 
 struct CYFor :
     CYStatement
 {
 };
 
 struct CYFor :
     CYStatement
 {

-    CYForInitializer *initialiser_;
+    CYForInitializer *initializer_;

     CYExpression *test_;
     CYExpression *increment_;
     CYStatement *code_;
 
     CYExpression *test_;
     CYExpression *increment_;
     CYStatement *code_;
 

-    CYFor(CYForInitializer *initialiser, CYExpression *test, CYExpression *increment, CYStatement *code) :
-        initialiser_(initialiser),
+    CYFor(CYForInitializer *initializer, CYExpression *test, CYExpression *increment, CYStatement *code) :
+        initializer_(initializer),

         test_(test),
         increment_(increment),
         code_(code)
         test_(test),
         increment_(increment),
         code_(code)


@@ -1253,13 +1349,33 @@ struct CYFor :
 struct CYForIn :
     CYStatement
 {
 struct CYForIn :
     CYStatement
 {

-    CYForInInitializer *initialiser_;
-    CYExpression *set_;
+    CYForInInitializer *initializer_;
+    CYExpression *iterable_;
+    CYStatement *code_;
+
+    CYForIn(CYForInInitializer *initializer, CYExpression *iterable, CYStatement *code) :
+        initializer_(initializer),
+        iterable_(iterable),
+        code_(code)
+    {
+    }
+
+    CYCompact(Long)
+
+    virtual CYStatement *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+struct CYForInitialized :
+    CYStatement
+{
+    CYBinding *binding_;
+    CYExpression *iterable_;

     CYStatement *code_;
 
     CYStatement *code_;
 

-    CYForIn(CYForInInitializer *initialiser, CYExpression *set, CYStatement *code) :
-        initialiser_(initialiser),
-        set_(set),
+    CYForInitialized(CYBinding *binding, CYExpression *iterable, CYStatement *code) :
+        binding_(binding),
+        iterable_(iterable),

         code_(code)
     {
     }
         code_(code)
     {
     }


@@ -1273,13 +1389,13 @@ struct CYForIn :
 struct CYForOf :
     CYStatement
 {
 struct CYForOf :
     CYStatement
 {

-    CYForInInitializer *initialiser_;
-    CYExpression *set_;
+    CYForInInitializer *initializer_;
+    CYExpression *iterable_;

     CYStatement *code_;
 
     CYStatement *code_;
 

-    CYForOf(CYForInInitializer *initialiser, CYExpression *set, CYStatement *code) :
-        initialiser_(initialiser),
-        set_(set),
+    CYForOf(CYForInInitializer *initializer, CYExpression *iterable, CYStatement *code) :
+        initializer_(initializer),
+        iterable_(iterable),

         code_(code)
     {
     }
         code_(code)
     {
     }


@@ -1300,12 +1416,12 @@ struct CYObject :
     {
     }
 
     {
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYMember :
     void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYMember :

-    CYExpression
+    CYTarget

 {
     CYExpression *object_;
     CYExpression *property_;
 {
     CYExpression *object_;
     CYExpression *property_;


@@ -1330,9 +1446,8 @@ struct CYDirectMember :
     }
 
     CYPrecedence(1)
     }
 
     CYPrecedence(1)

-    CYRightHand(false)

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1345,9 +1460,22 @@ struct CYIndirectMember :
     }
 
     CYPrecedence(1)
     }
 
     CYPrecedence(1)

-    CYRightHand(false)

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+struct CYResolveMember :
+    CYMember
+{
+    CYResolveMember(CYExpression *object, CYExpression *property) :
+        CYMember(object, property)
+    {
+    }
+
+    CYPrecedence(1)
+
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1355,12 +1483,12 @@ namespace cy {
 namespace Syntax {
 
 struct New :
 namespace Syntax {
 
 struct New :

-    CYExpression
+    CYTarget

 {
     CYExpression *constructor_;
     CYArgument *arguments_;
 
 {
     CYExpression *constructor_;
     CYArgument *arguments_;
 

-    New(CYExpression *constructor, CYArgument *arguments) :
+    New(CYExpression *constructor, CYArgument *arguments = NULL) :

         constructor_(constructor),
         arguments_(arguments)
     {
         constructor_(constructor),
         arguments_(arguments)
     {


@@ -1370,56 +1498,77 @@ struct New :
         return arguments_ == NULL ? 2 : 1;
     }
 
         return arguments_ == NULL ? 2 : 1;
     }
 

-    CYRightHand(false)

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 

-    virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
+    virtual CYTarget *AddArgument(CYContext &context, CYExpression *value);

 };
 
 } }
 
 };
 
 } }
 

-struct CYCall :
-    CYExpression
+struct CYApply :
+    CYTarget

 {
 {

-    CYExpression *function_;

     CYArgument *arguments_;
 
     CYArgument *arguments_;
 

-    CYCall(CYExpression *function, CYArgument *arguments = NULL) :
-        function_(function),
+    CYApply(CYArgument *arguments = NULL) :

         arguments_(arguments)
     {
     }
 
     CYPrecedence(1)
         arguments_(arguments)
     {
     }
 
     CYPrecedence(1)

-    CYRightHand(false)
-
-    virtual CYExpression *Replace(CYContext &context);
-    virtual void Output(CYOutput &out, CYFlags flags) const;

 
 

-    virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
+    virtual CYTarget *AddArgument(CYContext &context, CYExpression *value);

 };
 
 };
 

-struct CYRubyProc;
-
-struct CYRubyBlock :
-    CYExpression
+struct CYCall :
+    CYApply

 {
 {

-    CYExpression *call_;
-    CYRubyProc *proc_;
+    CYExpression *function_;

 
 

-    CYRubyBlock(CYExpression *call, CYRubyProc *proc) :
-        call_(call),
-        proc_(proc)
+    CYCall(CYExpression *function, CYArgument *arguments = NULL) :
+        CYApply(arguments),
+        function_(function)
+    {
+    }
+
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+    virtual CYTarget *Replace(CYContext &context);
+};
+
+struct CYEval :
+    CYApply
+{
+    CYEval(CYArgument *arguments) :
+        CYApply(arguments)

     {
     }
 
     {
     }
 

-    CYPrecedence(1)
-    CYRightHand(false)
-
-    virtual CYExpression *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
     virtual void Output(CYOutput &out, CYFlags flags) const;

+    virtual CYTarget *Replace(CYContext &context);
+};
+
+struct CYRubyProc;
+
+struct CYRubyBlock :
+    CYTarget
+{
+    CYExpression *call_;
+    CYRubyProc *proc_;
+
+    CYRubyBlock(CYExpression *call, CYRubyProc *proc) :
+        call_(call),
+        proc_(proc)
+    {
+    }
+
+    CYPrecedence(1)
+
+    virtual CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+
+    virtual CYTarget *AddArgument(CYContext &context, CYExpression *value);

 };
 
 struct CYIf :
 };
 
 struct CYIf :


@@ -1481,41 +1630,42 @@ struct CYWhile :
 };
 
 struct CYFunction {
 };
 
 struct CYFunction {

-    CYIdentifier *name_;

     CYFunctionParameter *parameters_;
     CYStatement *code_;
 
     CYNonLocal *nonlocal_;
     bool implicit_;
     CYThisScope this_;
     CYFunctionParameter *parameters_;
     CYStatement *code_;
 
     CYNonLocal *nonlocal_;
     bool implicit_;
     CYThisScope this_;

+    CYIdentifier *super_;

 
 

-    CYFunction(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *code) :
-        name_(name),
+    CYFunction(CYFunctionParameter *parameters, CYStatement *code) :

         parameters_(parameters),
         code_(code),
         nonlocal_(NULL),
         parameters_(parameters),
         code_(code),
         nonlocal_(NULL),

-        implicit_(false)
+        implicit_(false),
+        super_(NULL)

     {
     }
 
     {
     }
 

-    void Inject(CYContext &context);
-    virtual void Replace_(CYContext &context, bool outer);
-    virtual void Output(CYOutput &out, CYFlags flags) const;
+    void Replace(CYContext &context);
+    void Output(CYOutput &out) const;

 };
 
 struct CYFunctionExpression :
     CYFunction,
 };
 
 struct CYFunctionExpression :
     CYFunction,

-    CYExpression
+    CYTarget

 {
 {

+    CYIdentifier *name_;
+

     CYFunctionExpression(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *code) :
     CYFunctionExpression(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *code) :

-        CYFunction(name, parameters, code)
+        CYFunction(parameters, code),
+        name_(name)

     {
     }
 
     CYPrecedence(0)
     {
     }
 
     CYPrecedence(0)

-    CYRightHand(false)

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    CYTarget *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1524,27 +1674,28 @@ struct CYFatArrow :
     CYExpression
 {
     CYFatArrow(CYFunctionParameter *parameters, CYStatement *code) :
     CYExpression
 {
     CYFatArrow(CYFunctionParameter *parameters, CYStatement *code) :

-        CYFunction(NULL, parameters, code)
+        CYFunction(parameters, code)

     {
     }
 
     CYPrecedence(0)
     {
     }
 
     CYPrecedence(0)

-    CYRightHand(false)

 
 

-    virtual CYExpression *Replace(CYContext &context);
+    CYExpression *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYRubyProc :
     CYFunction,
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYRubyProc :
     CYFunction,

-    CYExpression
+    CYTarget

 {
     CYRubyProc(CYFunctionParameter *parameters, CYStatement *code) :
 {
     CYRubyProc(CYFunctionParameter *parameters, CYStatement *code) :

-        CYFunction(NULL, parameters, code)
+        CYFunction(parameters, code)

     {
     }
 
     {
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    CYPrecedence(0)
+
+    CYTarget *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1552,19 +1703,166 @@ struct CYFunctionStatement :
     CYFunction,
     CYStatement
 {
     CYFunction,
     CYStatement
 {

+    CYIdentifier *name_;
+

     CYFunctionStatement(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *code) :
     CYFunctionStatement(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *code) :

-        CYFunction(name, parameters, code)
+        CYFunction(parameters, code),
+        name_(name)

     {
     }
 
     CYCompact(None)
 
     {
     }
 
     CYCompact(None)
 

-    virtual CYStatement *Replace(CYContext &context);
+    CYStatement *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

-struct CYExpress :
+struct CYPropertyMethod;
+
+struct CYMethod :
+    CYFunction,
+    CYProperty
+{
+    CYMethod(CYPropertyName *name, CYFunctionParameter *parameters, CYStatement *code, CYProperty *next = NULL) :
+        CYFunction(parameters, code),
+        CYProperty(name, next)
+    {
+    }
+
+    virtual CYFunctionExpression *Constructor();
+
+    using CYProperty::Replace;
+    virtual void Replace(CYContext &context);
+};
+
+struct CYPropertyGetter :
+    CYMethod
+{
+    CYPropertyGetter(CYPropertyName *name, CYStatement *code, CYProperty *next = NULL) :
+        CYMethod(name, NULL, code, next)
+    {
+    }
+
+    virtual void Replace(CYContext &context, CYBuilder &builder, CYExpression *self, CYExpression *name, bool protect);
+    virtual void Output(CYOutput &out) const;
+};
+
+struct CYPropertySetter :
+    CYMethod
+{
+    CYPropertySetter(CYPropertyName *name, CYFunctionParameter *parameters, CYStatement *code, CYProperty *next = NULL) :
+        CYMethod(name, parameters, code, next)
+    {
+    }
+
+    virtual void Replace(CYContext &context, CYBuilder &builder, CYExpression *self, CYExpression *name, bool protect);
+    virtual void Output(CYOutput &out) const;
+};
+
+struct CYPropertyMethod :
+    CYMethod
+{
+    CYPropertyMethod(CYPropertyName *name, CYFunctionParameter *parameters, CYStatement *code, CYProperty *next = NULL) :
+        CYMethod(name, parameters, code, next)
+    {
+    }
+
+    bool Update() const override;
+
+    virtual CYFunctionExpression *Constructor();
+
+    virtual void Replace(CYContext &context, CYBuilder &builder, CYExpression *self, CYExpression *name, bool protect);
+    virtual void Output(CYOutput &out) const;
+};
+
+struct CYClassTail :
+    CYThing
+{
+    CYExpression *extends_;
+
+    CYFunctionExpression *constructor_;
+    CYList<CYProperty> instance_;
+    CYList<CYProperty> static_;
+
+    CYClassTail(CYExpression *extends) :
+        extends_(extends),
+        constructor_(NULL)
+    {
+    }
+
+    void Output(CYOutput &out) const;
+};
+
+struct CYClassExpression :
+    CYTarget
+{
+    CYIdentifier *name_;
+    CYClassTail *tail_;
+
+    CYClassExpression(CYIdentifier *name, CYClassTail *tail) :
+        name_(name),
+        tail_(tail)
+    {
+    }
+
+    CYPrecedence(0)
+
+    CYTarget *Replace(CYContext &context) override;
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+struct CYClassStatement :

     CYStatement
     CYStatement

+{
+    CYIdentifier *name_;
+    CYClassTail *tail_;
+
+    CYClassStatement(CYIdentifier *name, CYClassTail *tail) :
+        name_(name),
+        tail_(tail)
+    {
+    }
+
+    CYCompact(Long)
+
+    CYStatement *Replace(CYContext &context) override;
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+struct CYSuperCall :
+    CYTarget
+{
+    CYArgument *arguments_;
+
+    CYSuperCall(CYArgument *arguments) :
+        arguments_(arguments)
+    {
+    }
+
+    CYPrecedence(2)
+
+    CYTarget *Replace(CYContext &context) override;
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+struct CYSuperAccess :
+    CYTarget
+{
+    CYExpression *property_;
+
+    CYSuperAccess(CYExpression *property) :
+        property_(property)
+    {
+    }
+
+    CYPrecedence(1)
+
+    CYTarget *Replace(CYContext &context) override;
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+struct CYExpress :
+    CYForInitializer

 {
     CYExpression *expression_;
 
 {
     CYExpression *expression_;
 


@@ -1577,7 +1875,7 @@ struct CYExpress :
 
     CYCompact(None)
 
 
     CYCompact(None)
 

-    virtual CYStatement *Replace(CYContext &context);
+    CYForInitializer *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 
     virtual CYStatement *Return();
     virtual void Output(CYOutput &out, CYFlags flags) const;
 
     virtual CYStatement *Return();


@@ -1595,7 +1893,7 @@ struct CYContinue :
 
     CYCompact(Short)
 
 
     CYCompact(Short)
 

-    virtual CYStatement *Replace(CYContext &context);
+    CYStatement *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1611,7 +1909,7 @@ struct CYBreak :
 
     CYCompact(Short)
 
 
     CYCompact(Short)
 

-    virtual CYStatement *Replace(CYContext &context);
+    CYStatement *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1627,7 +1925,7 @@ struct CYReturn :
 
     CYCompact(None)
 
 
     CYCompact(None)
 

-    virtual CYStatement *Replace(CYContext &context);
+    CYStatement *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1643,7 +1941,7 @@ struct CYYieldGenerator :
 
     CYPrecedence(0)
 
 
     CYPrecedence(0)
 

-    virtual CYExpression *Replace(CYContext &context);
+    CYExpression *Replace(CYContext &context) override;

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1664,11 +1962,11 @@ struct CYYieldValue :
 };
 
 struct CYEmpty :
 };
 
 struct CYEmpty :

-    CYStatement
+    CYForInitializer

 {
     CYCompact(Short)
 
 {
     CYCompact(Short)
 

-    virtual CYStatement *Replace(CYContext &context);
+    virtual CYForInitializer *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1689,7 +1987,7 @@ struct CYFinally :
 struct CYTypeSpecifier :
     CYThing
 {
 struct CYTypeSpecifier :
     CYThing
 {

-    virtual CYExpression *Replace(CYContext &context) = 0;
+    virtual CYTarget *Replace(CYContext &context) = 0;

 };
 
 struct CYTypeError :
 };
 
 struct CYTypeError :


@@ -1698,92 +1996,114 @@ struct CYTypeError :
     CYTypeError() {
     }
 
     CYTypeError() {
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out) const;
 };
 
     virtual void Output(CYOutput &out) const;
 };
 

-struct CYTypeVoid :
+enum CYTypeSigning {
+    CYTypeNeutral,
+    CYTypeSigned,
+    CYTypeUnsigned,
+};
+
+struct CYTypeCharacter :

     CYTypeSpecifier
 {
     CYTypeSpecifier
 {

-    CYTypeVoid() {
+    CYTypeSigning signing_;
+
+    CYTypeCharacter(CYTypeSigning signing) :
+        signing_(signing)
+    {

     }
 
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out) const;
 };
 
     virtual void Output(CYOutput &out) const;
 };
 

-struct CYTypeVariable :
+struct CYTypeIntegral :

     CYTypeSpecifier
 {
     CYTypeSpecifier
 {

-    CYIdentifier *name_;
+    CYTypeSigning signing_;
+    int length_;

 
 

-    CYTypeVariable(CYIdentifier *name) :
-        name_(name)
+    CYTypeIntegral(CYTypeSigning signing, int length = 1) :
+        signing_(signing),
+        length_(length)

     {
     }
 
     {
     }
 

-    CYTypeVariable(const char *name) :
-        name_(new($pool) CYIdentifier(name))
-    {
+    CYTypeIntegral *Long() {
+        if (length_ != 1 && length_ != 2)
+            return NULL;
+        ++length_;
+        return this;

     }
 
     }
 

-    virtual CYExpression *Replace(CYContext &context);
-    virtual void Output(CYOutput &out) const;
-};
+    CYTypeIntegral *Short() {
+        if (length_ != 1)
+            return NULL;
+        --length_;
+        return this;
+    }

 
 

-struct CYTypeUnsigned :
-    CYTypeSpecifier
-{
-    CYTypeSpecifier *specifier_;
+    CYTypeIntegral *Signed() {
+        if (signing_ != CYTypeNeutral)
+            return NULL;
+        signing_ = CYTypeSigned;
+        return this;
+    }

 
 

-    CYTypeUnsigned(CYTypeSpecifier *specifier) :
-        specifier_(specifier)
-    {
+    CYTypeIntegral *Unsigned() {
+        if (signing_ != CYTypeNeutral)
+            return NULL;
+        signing_ = CYTypeUnsigned;
+        return this;

     }
 
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out) const;
 };
 
     virtual void Output(CYOutput &out) const;
 };
 

-struct CYTypeSigned :
+struct CYTypeVoid :

     CYTypeSpecifier
 {
     CYTypeSpecifier
 {

-    CYTypeSpecifier *specifier_;
-
-    CYTypeSigned(CYTypeSpecifier *specifier) :
-        specifier_(specifier)
-    {
+    CYTypeVoid() {

     }
 
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out) const;
 };
 
     virtual void Output(CYOutput &out) const;
 };
 

-struct CYTypeLong :
+struct CYTypeReference :

     CYTypeSpecifier
 {
     CYTypeSpecifier
 {

-    CYTypeSpecifier *specifier_;
+    CYIdentifier *name_;

 
 

-    CYTypeLong(CYTypeSpecifier *specifier) :
-        specifier_(specifier)
+    CYTypeReference(CYIdentifier *name) :
+        name_(name)

     {
     }
 
     {
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out) const;
 };
 
     virtual void Output(CYOutput &out) const;
 };
 

-struct CYTypeShort :
+struct CYTypeVariable :

     CYTypeSpecifier
 {
     CYTypeSpecifier
 {

-    CYTypeSpecifier *specifier_;
+    CYIdentifier *name_;

 
 

-    CYTypeShort(CYTypeSpecifier *specifier) :
-        specifier_(specifier)
+    CYTypeVariable(CYIdentifier *name) :
+        name_(name)

     {
     }
 
     {
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    CYTypeVariable(const char *name) :
+        name_(new($pool) CYIdentifier(name))
+    {
+    }
+
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out) const;
 };
 
     virtual void Output(CYOutput &out) const;
 };
 


@@ -1799,8 +2119,8 @@ struct CYTypeModifier :
 
     virtual int Precedence() const = 0;
 
 
     virtual int Precedence() const = 0;
 

-    virtual CYExpression *Replace_(CYContext &context, CYExpression *type) = 0;
-    CYExpression *Replace(CYContext &context, CYExpression *type);
+    virtual CYTarget *Replace_(CYContext &context, CYTarget *type) = 0;
+    CYTarget *Replace(CYContext &context, CYTarget *type);

 
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const = 0;
     void Output(CYOutput &out, int precedence, CYIdentifier *identifier) const;
 
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const = 0;
     void Output(CYOutput &out, int precedence, CYIdentifier *identifier) const;


@@ -1821,7 +2141,7 @@ struct CYTypeArrayOf :
 
     CYPrecedence(1)
 
 
     CYPrecedence(1)
 

-    virtual CYExpression *Replace_(CYContext &context, CYExpression *type);
+    virtual CYTarget *Replace_(CYContext &context, CYTarget *type);

     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 


@@ -1835,7 +2155,7 @@ struct CYTypeConstant :
 
     CYPrecedence(0)
 
 
     CYPrecedence(0)
 

-    virtual CYExpression *Replace_(CYContext &context, CYExpression *type);
+    virtual CYTarget *Replace_(CYContext &context, CYTarget *type);

     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 


@@ -1849,7 +2169,7 @@ struct CYTypePointerTo :
 
     CYPrecedence(0)
 
 
     CYPrecedence(0)
 

-    virtual CYExpression *Replace_(CYContext &context, CYExpression *type);
+    virtual CYTarget *Replace_(CYContext &context, CYTarget *type);

     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 


@@ -1863,7 +2183,7 @@ struct CYTypeVolatile :
 
     CYPrecedence(0)
 
 
     CYPrecedence(0)
 

-    virtual CYExpression *Replace_(CYContext &context, CYExpression *type);
+    virtual CYTarget *Replace_(CYContext &context, CYTarget *type);

     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 


@@ -1896,14 +2216,14 @@ struct CYTypedIdentifier :
         return this;
     }
 
         return this;
     }
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out) const;
 
     CYTypeFunctionWith *Function();
 };
 
 struct CYEncodedType :
     virtual void Output(CYOutput &out) const;
 
     CYTypeFunctionWith *Function();
 };
 
 struct CYEncodedType :

-    CYExpression
+    CYTarget

 {
     CYTypedIdentifier *typed_;
 
 {
     CYTypedIdentifier *typed_;
 


@@ -1914,7 +2234,7 @@ struct CYEncodedType :
 
     CYPrecedence(1)
 
 
     CYPrecedence(1)
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1937,8 +2257,19 @@ struct CYTypedParameter :
     virtual void Output(CYOutput &out) const;
 };
 
     virtual void Output(CYOutput &out) const;
 };
 

+struct CYTypedFormal {
+    bool variadic_;
+    CYTypedParameter *parameters_;
+
+    CYTypedFormal(bool variadic) :
+        variadic_(variadic),
+        parameters_(NULL)
+    {
+    }
+};
+

 struct CYLambda :
 struct CYLambda :

-    CYExpression
+    CYTarget

 {
     CYTypedIdentifier *typed_;
     CYTypedParameter *parameters_;
 {
     CYTypedIdentifier *typed_;
     CYTypedParameter *parameters_;


@@ -1953,7 +2284,7 @@ struct CYLambda :
 
     CYPrecedence(1)
 
 
     CYPrecedence(1)
 

-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);

     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 


@@ -1989,6 +2320,39 @@ struct CYImport :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

+struct CYImportSpecifier :
+    CYNext<CYImportSpecifier>
+{
+    CYWord *name_;
+    CYIdentifier *binding_;
+
+    CYImportSpecifier(CYWord *name, CYIdentifier *binding) :
+        name_(name),
+        binding_(binding)
+    {
+    }
+
+    CYStatement *Replace(CYContext &context, CYIdentifier *module);
+};
+
+struct CYImportDeclaration :
+    CYStatement
+{
+    CYImportSpecifier *specifiers_;
+    CYString *module_;
+
+    CYImportDeclaration(CYImportSpecifier *specifiers, CYString *module) :
+        specifiers_(specifiers),
+        module_(module)
+    {
+    }
+
+    CYCompact(None)
+
+    virtual CYStatement *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+

 struct CYExternal :
     CYStatement
 {
 struct CYExternal :
     CYStatement
 {


@@ -2007,6 +2371,22 @@ struct CYExternal :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 

+struct CYTypeExpression :
+    CYTarget
+{
+    CYTypedIdentifier *typed_;
+
+    CYTypeExpression(CYTypedIdentifier *typed) :
+        typed_(typed)
+    {
+    }
+
+    CYPrecedence(0)
+
+    virtual CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+

 struct CYTypeDefinition :
     CYStatement
 {
 struct CYTypeDefinition :
     CYStatement
 {


@@ -2036,29 +2416,91 @@ struct CYTypeBlockWith :
 
     CYPrecedence(0)
 
 
     CYPrecedence(0)
 

-    virtual CYExpression *Replace_(CYContext &context, CYExpression *type);
+    virtual CYTarget *Replace_(CYContext &context, CYTarget *type);

     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 
 struct CYTypeFunctionWith :
     CYTypeModifier
 {
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 };
 
 struct CYTypeFunctionWith :
     CYTypeModifier
 {

+    bool variadic_;

     CYTypedParameter *parameters_;
 
     CYTypedParameter *parameters_;
 

-    CYTypeFunctionWith(CYTypedParameter *parameters, CYTypeModifier *next = NULL) :
+    CYTypeFunctionWith(bool variadic, CYTypedParameter *parameters, CYTypeModifier *next = NULL) :

         CYTypeModifier(next),
         CYTypeModifier(next),

+        variadic_(variadic),

         parameters_(parameters)
     {
     }
 
     CYPrecedence(1)
 
         parameters_(parameters)
     {
     }
 
     CYPrecedence(1)
 

-    virtual CYExpression *Replace_(CYContext &context, CYExpression *type);
+    virtual CYTarget *Replace_(CYContext &context, CYTarget *type);

     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 
     virtual CYTypeFunctionWith *Function() { return this; }
 };
 
     virtual void Output(CYOutput &out, CYIdentifier *identifier) const;
 
     virtual CYTypeFunctionWith *Function() { return this; }
 };
 

+struct CYTypeStructField :
+    CYNext<CYTypeStructField>
+{
+    CYTypedIdentifier *typed_;
+
+    CYTypeStructField(CYTypedIdentifier *typed, CYTypeStructField *next = NULL) :
+        CYNext<CYTypeStructField>(next),
+        typed_(typed)
+    {
+    }
+};
+
+struct CYStructTail :
+    CYThing
+{
+    CYTypeStructField *fields_;
+
+    CYStructTail(CYTypeStructField *fields) :
+        fields_(fields)
+    {
+    }
+
+    CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out) const;
+};
+
+struct CYTypeStruct :
+    CYTypeSpecifier
+{
+    CYIdentifier *name_;
+    CYStructTail *tail_;
+
+    CYTypeStruct(CYIdentifier *name, CYStructTail *tail) :
+        name_(name),
+        tail_(tail)
+    {
+    }
+
+    virtual CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out) const;
+};
+
+struct CYStructDefinition :
+    CYStatement
+{
+    CYIdentifier *name_;
+    CYStructTail *tail_;
+
+    CYStructDefinition(CYIdentifier *name, CYStructTail *tail) :
+        name_(name),
+        tail_(tail)
+    {
+    }
+
+    CYCompact(None)
+
+    virtual CYStatement *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+

 namespace cy {
 namespace Syntax {
 
 namespace cy {
 namespace Syntax {
 


@@ -2203,20 +2645,20 @@ struct CYAddressOf :
 };
 
 struct CYIndirect :
 };
 
 struct CYIndirect :

-    CYPrefix
+    CYTarget

 {
 {

+    CYExpression *rhs_;
+

     CYIndirect(CYExpression *rhs) :
     CYIndirect(CYExpression *rhs) :

-        CYPrefix(rhs)
+        rhs_(rhs)

     {
     }
 
     {
     }
 

-    virtual const char *Operator() const {
-        return "*";
-    }
+    // XXX: this should be checked
+    CYPrecedence(2)

 
 

-    CYAlphabetic(false)
-
-    virtual CYExpression *Replace(CYContext &context);
+    virtual CYTarget *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;

 };
 
 #define CYReplace \
 };
 
 #define CYReplace \


@@ -2273,7 +2715,7 @@ struct CYIndirect :
     struct CY ## name ## Assign : \
         CYAssignment \
     { args \
     struct CY ## name ## Assign : \
         CYAssignment \
     { args \

-        CY ## name ## Assign(CYExpression *lhs, CYExpression *rhs) : \
+        CY ## name ## Assign(CYTarget *lhs, CYExpression *rhs) : \

             CYAssignment(lhs, rhs) \
         { \
         } \
             CYAssignment(lhs, rhs) \
         { \
         } \