X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/457afcc98a03ef56c699cff9f468813567f10182..1e7ce5572cfc83d260cbe73d66814f54e5760c37:/Cycript.y

diff --git a/Cycript.y b/Cycript.y
index 8d5c257..7fdc172 100644
--- a/Cycript.y
+++ b/Cycript.y
@@ -1,3 +1,42 @@
+/* Cycript - Remove Execution Server and Disassembler
+ * 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.
+*/
+/* }}} */
+
 %code top {
 #include "Cycript.tab.hh"
 #define scanner driver.scanner_
@@ -11,25 +50,40 @@ typedef struct {
     bool newline_;
 
     union {
+        bool bool_;
+
+        CYDriver::Condition condition_;
+
         CYArgument *argument_;
+        CYAssignment *assignment_;
         CYBoolean *boolean_;
         CYClause *clause_;
         CYCatch *catch_;
+        CYClassName *className_;
+        CYComprehension *comprehension_;
+        CYCompound *compound_;
         CYDeclaration *declaration_;
         CYDeclarations *declarations_;
         CYElement *element_;
         CYExpression *expression_;
         CYFalse *false_;
+        CYField *field_;
+        CYFinally *finally_;
         CYForInitialiser *for_;
         CYForInInitialiser *forin_;
+        CYFunctionParameter *functionParameter_;
         CYIdentifier *identifier_;
+        CYInfix *infix_;
         CYLiteral *literal_;
-        CYName *name_;
+        CYMember *member_;
+        CYMessage *message_;
+        CYMessageParameter *messageParameter_;
         CYNull *null_;
         CYNumber *number_;
-        CYParameter *parameter_;
+        CYProgram *program_;
         CYProperty *property_;
-        CYSource *source_;
+        CYPropertyName *propertyName_;
+        CYSelectorPart *selector_;
         CYStatement *statement_;
         CYString *string_;
         CYThis *this_;
@@ -55,12 +109,16 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 
 %defines
 
-%debug
+//%glr-parser
+//%expect 1
+
 %error-verbose
 
 %parse-param { CYDriver &driver }
 %lex-param { void *scanner }
 
+%token At "@"
+
 %token Ampersand "&"
 %token AmpersandAmpersand "&&"
 %token AmpersandEqual "&="
@@ -118,6 +176,15 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %token OpenBracket "["
 %token CloseBracket "]"
 
+%token AtClass "@class"
+%token AtSelector "@selector"
+%token AtEnd "@end"
+
+%token <false_> False "false"
+%token <null_> Null "null"
+%token <true_> True "true"
+
+// ES3/ES5/WIE/JSC Reserved
 %token <word_> Break "break"
 %token <word_> Case "case"
 %token <word_> Catch "catch"
@@ -126,7 +193,6 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %token <word_> Delete "delete"
 %token <word_> Do "do"
 %token <word_> Else "else"
-%token <false_> False "false"
 %token <word_> Finally "finally"
 %token <word_> For "for"
 %token <word_> Function "function"
@@ -134,12 +200,10 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %token <word_> In "in"
 %token <word_> InstanceOf "instanceof"
 %token <word_> New "new"
-%token <null_> Null "null"
 %token <word_> Return "return"
 %token <word_> Switch "switch"
 %token <this_> This "this"
 %token <word_> Throw "throw"
-%token <true_> True "true"
 %token <word_> Try "try"
 %token <word_> TypeOf "typeof"
 %token <word_> Var "var"
@@ -147,9 +211,58 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %token <word_> While "while"
 %token <word_> With "with"
 
-%token <identifier_> Identifier
+// ES3/IE6 Future, ES5/JSC Reserved
+%token <word_> Debugger "debugger"
+
+// ES3/ES5/IE6 Future, JSC Reserved
+%token <word_> Const "const"
+
+// ES3/ES5/IE6/JSC Future
+%token <word_> Class "class"
+%token <word_> Enum "enum"
+%token <word_> Export "export"
+%token <word_> Extends "extends"
+%token <word_> Import "import"
+%token <word_> Super "super"
+
+// ES3 Future, ES5 Strict Future
+%token <identifier_> Implements "implements"
+%token <identifier_> Interface "interface"
+%token <identifier_> Package "package"
+%token <identifier_> Private "private"
+%token <identifier_> Protected "protected"
+%token <identifier_> Public "public"
+%token <identifier_> Static "static"
+
+// ES3 Future
+%token <identifier_> Abstract "abstract"
+%token <identifier_> Boolean "boolean"
+%token <identifier_> Byte "byte"
+%token <identifier_> Char "char"
+%token <identifier_> Double "double"
+%token <identifier_> Final "final"
+%token <identifier_> Float "float"
+%token <identifier_> Goto "goto"
+%token <identifier_> Int "int"
+%token <identifier_> Long "long"
+%token <identifier_> Native "native"
+%token <identifier_> Short "short"
+%token <identifier_> Synchronized "synchronized"
+%token <identifier_> Throws "throws"
+%token <identifier_> Transient "transient"
+%token <identifier_> Volatile "volatile"
+
+// ES5 Strict
+%token <identifier_> Let "let"
+%token <identifier_> Yield "yield"
+
+// Woah?!
+%token <identifier_> Each "each"
+
+%token <identifier_> Identifier_
 %token <number_> NumericLiteral
 %token <string_> StringLiteral
+%token <literal_> RegularExpressionLiteral
 
 %type <expression_> AdditiveExpression
 %type <expression_> AdditiveExpressionNoBF
@@ -158,13 +271,18 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <argument_> ArgumentListOpt
 %type <argument_> Arguments
 %type <literal_> ArrayLiteral
+%type <expression_> AssigneeExpression
+%type <expression_> AssigneeExpression_
+%type <expression_> AssigneeExpressionNoBF
 %type <expression_> AssignmentExpression
+%type <assignment_> AssignmentExpression_
 %type <expression_> AssignmentExpressionNoBF
 %type <expression_> AssignmentExpressionNoIn
 %type <expression_> BitwiseANDExpression
 %type <expression_> BitwiseANDExpressionNoBF
 %type <expression_> BitwiseANDExpressionNoIn
 %type <statement_> Block
+%type <statement_> Block_
 %type <boolean_> BooleanLiteral
 %type <expression_> BitwiseORExpression
 %type <expression_> BitwiseORExpressionNoBF
@@ -179,6 +297,17 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <clause_> CaseClause
 %type <clause_> CaseClausesOpt
 %type <catch_> CatchOpt
+%type <statement_> CategoryStatement
+%type <expression_> ClassExpression
+%type <message_> ClassMessageDeclaration
+%type <message_> ClassMessageDeclarationListOpt
+%type <className_> ClassName
+%type <className_> ClassNameOpt
+%type <statement_> ClassStatement
+%type <expression_> ClassSuperOpt
+%type <field_> ClassFieldList
+%type <comprehension_> ComprehensionList
+%type <comprehension_> ComprehensionListOpt
 %type <expression_> ConditionalExpression
 %type <expression_> ConditionalExpressionNoBF
 %type <expression_> ConditionalExpressionNoIn
@@ -186,8 +315,9 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <clause_> DefaultClause
 %type <statement_> DoWhileStatement
 %type <expression_> Element
+%type <expression_> ElementOpt
 %type <element_> ElementList
-%type <element_> ElementList_
+%type <element_> ElementListOpt
 %type <statement_> ElseStatementOpt
 %type <statement_> EmptyStatement
 %type <expression_> EqualityExpression
@@ -195,23 +325,26 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <expression_> EqualityExpressionNoIn
 %type <expression_> Expression
 %type <expression_> ExpressionOpt
-%type <expression_> Expression_
+%type <compound_> Expression_
 %type <expression_> ExpressionNoBF
 %type <expression_> ExpressionNoIn
-%type <expression_> ExpressionNoIn_
+%type <compound_> ExpressionNoIn_
 %type <expression_> ExpressionNoInOpt
 %type <statement_> ExpressionStatement
-%type <statement_> FinallyOpt
+%type <finally_> FinallyOpt
+%type <comprehension_> ForComprehension
 %type <statement_> ForStatement
 %type <for_> ForStatementInitialiser
 %type <statement_> ForInStatement
 %type <forin_> ForInStatementInitialiser
-%type <parameter_> FormalParameterList
-%type <parameter_> FormalParameterList_
-%type <source_> FunctionBody
-%type <source_> FunctionDeclaration
+%type <functionParameter_> FormalParameterList
+%type <functionParameter_> FormalParameterList_
+%type <statement_> FunctionBody
+%type <statement_> FunctionDeclaration
 %type <expression_> FunctionExpression
+%type <identifier_> Identifier
 %type <identifier_> IdentifierOpt
+%type <comprehension_> IfComprehension
 %type <statement_> IfStatement
 %type <expression_> Initialiser
 %type <expression_> InitialiserOpt
@@ -220,8 +353,8 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <statement_> IterationStatement
 %type <statement_> LabelledStatement
 %type <expression_> LeftHandSideExpression
-%type <expression_> LeftHandSideExpression_
 %type <expression_> LeftHandSideExpressionNoBF
+//%type <statement_> LetStatement
 %type <literal_> Literal
 %type <expression_> LogicalANDExpression
 %type <expression_> LogicalANDExpressionNoBF
@@ -229,9 +362,15 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <expression_> LogicalORExpression
 %type <expression_> LogicalORExpressionNoBF
 %type <expression_> LogicalORExpressionNoIn
+%type <member_> MemberAccess
 %type <expression_> MemberExpression
 %type <expression_> MemberExpression_
 %type <expression_> MemberExpressionNoBF
+%type <messageParameter_> MessageParameter
+%type <messageParameter_> MessageParameters
+%type <messageParameter_> MessageParameterList
+%type <messageParameter_> MessageParameterListOpt
+%type <bool_> MessageScope
 %type <expression_> MultiplicativeExpression
 %type <expression_> MultiplicativeExpressionNoBF
 %type <expression_> NewExpression
@@ -244,25 +383,34 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <expression_> PrimaryExpression
 %type <expression_> PrimaryExpression_
 %type <expression_> PrimaryExpressionNoBF
-%type <source_> Program
-%type <name_> PropertyName
+%type <statement_> Program
+%type <propertyName_> PropertyName
 %type <property_> PropertyNameAndValueList
 %type <property_> PropertyNameAndValueList_
 %type <property_> PropertyNameAndValueListOpt
+%type <literal_> RegularExpressionLiteral_
+%type <condition_> RegularExpressionToken
 %type <expression_> RelationalExpression
+%type <infix_> RelationalExpression_
 %type <expression_> RelationalExpressionNoBF
 %type <expression_> RelationalExpressionNoIn
+%type <infix_> RelationalExpressionNoIn_
 %type <statement_> ReturnStatement
+%type <selector_> SelectorExpression
+%type <selector_> SelectorExpression_
+%type <selector_> SelectorExpressionOpt
 %type <expression_> ShiftExpression
 %type <expression_> ShiftExpressionNoBF
-%type <source_> SourceElement
-%type <source_> SourceElements
+%type <statement_> SourceElement
+%type <statement_> SourceElements
 %type <statement_> Statement
+%type <statement_> Statement_
 %type <statement_> StatementList
 %type <statement_> StatementListOpt
 %type <statement_> SwitchStatement
 %type <statement_> ThrowStatement
 %type <statement_> TryStatement
+%type <expression_> TypeOpt
 %type <expression_> UnaryExpression
 %type <expression_> UnaryExpression_
 %type <expression_> UnaryExpressionNoBF
@@ -284,6 +432,19 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 %type <argument_> SelectorList
 %type <argument_> VariadicCall
 
+%left "*" "/" "%"
+%left "+" "-"
+%left "<<" ">>" ">>>"
+%left "<" ">" "<=" ">=" "instanceof" "in"
+%left "==" "!=" "===" "!=="
+%left "&"
+%left "^"
+%left "|"
+%left "&&"
+%left "||"
+
+%right "=" "*=" "/=" "%=" "+=" "-=" "<<=" ">>=" ">>>=" "&=" "^=" "|="
+
 %nonassoc "if"
 %nonassoc "else"
 
@@ -291,22 +452,29 @@ int cylex(YYSTYPE *lvalp, cy::location *llocp, void *scanner);
 
 %%
 
-TerminatorOpt
+StrictSemi
+    : { driver.Warning(yylloc, "warning, automatic semi-colon insertion required"); }
+    ;
+
+Terminator_
     : ";"
-    | "\n"
-    | error { yyerrok; }
+    | "\n" StrictSemi
+    ;
+
+TerminatorOpt
+    : Terminator_
+    | error { yyerrok; driver.errors_.pop_back(); } StrictSemi
     ;
 
 Terminator
-    : ";"
-    | "\n"
-    | error { if (yychar != 0 && yychar != cy::parser::token::CloseBrace && !yylval.newline_) YYABORT; else yyerrok; }
+    : Terminator_
+    | error { if (yychar != 0 && yychar != cy::parser::token::CloseBrace && !yylval.newline_) YYABORT; else { yyerrok; driver.errors_.pop_back(); } } StrictSemi
     ;
 
-CommaOpt
+/*CommaOpt
     : ","
     |
-    ;
+    ;*/
 
 NewLineOpt
     : "\n"
@@ -323,21 +491,29 @@ Word
     | "break" NewLineOpt { $$ = $1; }
     | "case" { $$ = $1; }
     | "catch" { $$ = $1; }
+    | "class" { $$ = $1; }
+    | "const" { $$ = $1; }
     | "continue" NewLineOpt { $$ = $1; }
+    | "debugger" { $$ = $1; }
     | "default" { $$ = $1; }
     | "delete" { $$ = $1; }
     | "do" { $$ = $1; }
     | "else" { $$ = $1; }
+    | "enum" { $$ = $1; }
+    | "export" { $$ = $1; }
+    | "extends" { $$ = $1; }
     | "false" { $$ = $1; }
     | "finally" { $$ = $1; }
     | "for" { $$ = $1; }
     | "function" { $$ = $1; }
     | "if" { $$ = $1; }
+    | "import" { $$ = $1; }
     /* XXX: | "in" { $$ = $1; } */
     /* XXX: | "instanceof" { $$ = $1; } */
     | "new" { $$ = $1; }
     | "null" { $$ = $1; }
     | "return" NewLineOpt { $$ = $1; }
+    | "super" { $$ = $1; }
     | "switch" { $$ = $1; }
     | "this" { $$ = $1; }
     | "throw" NewLineOpt { $$ = $1; }
@@ -350,16 +526,60 @@ Word
     | "with" { $$ = $1; }
     ;
 
+Identifier
+    : Identifier_ { $$ = $1; }
+
+    | "implements" { $$ = $1; }
+    | "interface" { $$ = $1; }
+    | "package" { $$ = $1; }
+    | "private" { $$ = $1; }
+    | "protected" { $$ = $1; }
+    | "public" { $$ = $1; }
+    | "static" { $$ = $1; }
+
+    | "abstract" { $$ = $1; }
+    | "boolean" { $$ = $1; }
+    | "byte" { $$ = $1; }
+    | "char" { $$ = $1; }
+    | "double" { $$ = $1; }
+    | "final" { $$ = $1; }
+    | "float" { $$ = $1; }
+    | "goto" { $$ = $1; }
+    | "int" { $$ = $1; }
+    | "long" { $$ = $1; }
+    | "native" { $$ = $1; }
+    | "short" { $$ = $1; }
+    | "synchronized" { $$ = $1; }
+    | "throws" { $$ = $1; }
+    | "transient" { $$ = $1; }
+    | "volatile" { $$ = $1; }
+
+    | "let" { $$ = $1; }
+    | "yield" { $$ = $1; }
+
+    | "each" { $$ = $1; }
+    ;
+
 IdentifierOpt
     : Identifier { $$ = $1; }
     | { $$ = NULL; }
     ;
 
+RegularExpressionToken
+    : "/" { $$ = CYDriver::RegExStart; }
+    | "/=" { $$ = CYDriver::RegExRest; }
+    ;
+
+RegularExpressionLiteral_
+    : RegularExpressionToken { driver.SetCondition($1); } RegularExpressionLiteral { $$ = $3; }
+    ;
+
 Literal
     : NullLiteral { $$ = $1; }
     | BooleanLiteral { $$ = $1; }
     | NumericLiteral { $$ = $1; }
     | StringLiteral { $$ = $1; }
+    | RegularExpressionLiteral_ { $$ = $1; }
     ;
 
 NullLiteral
@@ -391,31 +611,36 @@ PrimaryExpressionNoBF
 /* }}} */
 /* 11.1.4 Array Initialiser {{{ */
 ArrayLiteral
-    : "[" ElementList "]" { $$ = $2; }
+    : "[" ElementListOpt "]" { $$ = new(driver.pool_) CYArray($2); }
     ;
 
 Element
     : AssignmentExpression { $$ = $1; }
+    ;
+
+ElementOpt
+    : Element { $$ = $1; }
     | { $$ = NULL; }
     ;
 
-ElementList_
-    : "," ElementList { $$ = $2; }
+ElementListOpt
+    : ElementList { $$ = $1; }
     | { $$ = NULL; }
     ;
 
 ElementList
-    : Element ElementList_ { $$ = new(driver.pool_) CYElement($1, $2); }
+    : ElementOpt "," ElementListOpt { $$ = new(driver.pool_) CYElement($1, $3); }
+    | Element { $$ = new(driver.pool_) CYElement($1, NULL); }
     ;
 /* }}} */
 /* 11.1.5 Object Initialiser {{{ */
 ObjectLiteral
-    : "{" PropertyNameAndValueListOpt "}" { $$ = new CYObject($2); }
+    : "{" PropertyNameAndValueListOpt "}" { $$ = new(driver.pool_) CYObject($2); }
     ;
 
 PropertyNameAndValueList_
     : "," PropertyNameAndValueList { $$ = $2; }
-    | CommaOpt { $$ = NULL; }
+    | { $$ = NULL; }
     ;
 
 PropertyNameAndValueListOpt
@@ -434,22 +659,26 @@ PropertyName
     ;
 /* }}} */
 
+/* 11.2 Left-Hand-Side Expressions {{{ */
 MemberExpression_
     : "new" MemberExpression Arguments { $$ = new(driver.pool_) CYNew($2, $3); }
     ;
 
+MemberAccess
+    : "[" Expression "]" { $$ = new(driver.pool_) CYDirectMember(NULL, $2); }
+    | "." Identifier { $$ = new(driver.pool_) CYDirectMember(NULL, new(driver.pool_) CYString($2)); }
+    ;
+
 MemberExpression
     : PrimaryExpression { $$ = $1; }
     | FunctionExpression { $$ = $1; }
-    | MemberExpression "[" Expression "]" { $$ = new(driver.pool_) CYMember($1, $3); }
-    | MemberExpression "." Identifier { $$ = new(driver.pool_) CYMember($1, new(driver.pool_) CYString($3)); }
+    | MemberExpression MemberAccess { $2->SetLeft($1); $$ = $2; }
     | MemberExpression_ { $$ = $1; }
     ;
 
 MemberExpressionNoBF
     : PrimaryExpressionNoBF { $$ = $1; }
-    | MemberExpressionNoBF "[" Expression "]" { $$ = new(driver.pool_) CYMember($1, $3); }
-    | MemberExpressionNoBF "." Identifier { $$ = new(driver.pool_) CYMember($1, new(driver.pool_) CYString($3)); }
+    | MemberExpressionNoBF MemberAccess { $2->SetLeft($1); $$ = $2; }
     | MemberExpression_ { $$ = $1; }
     ;
 
@@ -470,15 +699,13 @@ NewExpressionNoBF
 CallExpression
     : MemberExpression Arguments { $$ = new(driver.pool_) CYCall($1, $2); }
     | CallExpression Arguments { $$ = new(driver.pool_) CYCall($1, $2); }
-    | CallExpression "[" Expression "]" { $$ = new(driver.pool_) CYMember($1, $3); }
-    | CallExpression "." Identifier { $$ = new(driver.pool_) CYMember($1, new(driver.pool_) CYString($3)); }
+    | CallExpression MemberAccess { $2->SetLeft($1); $$ = $2; }
     ;
 
 CallExpressionNoBF
     : MemberExpressionNoBF Arguments { $$ = new(driver.pool_) CYCall($1, $2); }
     | CallExpressionNoBF Arguments { $$ = new(driver.pool_) CYCall($1, $2); }
-    | CallExpressionNoBF "[" Expression "]" { $$ = new(driver.pool_) CYMember($1, $3); }
-    | CallExpressionNoBF "." Identifier { $$ = new(driver.pool_) CYMember($1, new(driver.pool_) CYString($3)); }
+    | CallExpressionNoBF MemberAccess { $2->SetLeft($1); $$ = $2; }
     ;
 
 ArgumentList_
@@ -502,27 +729,27 @@ Arguments
 LeftHandSideExpression
     : NewExpression { $$ = $1; }
     | CallExpression { $$ = $1; }
-    | LeftHandSideExpression_ { $$ = $1; }
     ;
 
 LeftHandSideExpressionNoBF
     : NewExpressionNoBF { $$ = $1; }
     | CallExpressionNoBF { $$ = $1; }
-    | LeftHandSideExpression_ { $$ = $1; }
     ;
-
+/* }}} */
+/* 11.3 Postfix Expressions {{{ */
 PostfixExpression
-    : LeftHandSideExpression { $$ = $1; }
+    : AssigneeExpression { $$ = $1; }
     | LeftHandSideExpression "++" { $$ = new(driver.pool_) CYPostIncrement($1); }
     | LeftHandSideExpression "--" { $$ = new(driver.pool_) CYPostDecrement($1); }
     ;
 
 PostfixExpressionNoBF
-    : LeftHandSideExpressionNoBF { $$ = $1; }
+    : AssigneeExpressionNoBF { $$ = $1; }
     | LeftHandSideExpressionNoBF "++" { $$ = new(driver.pool_) CYPostIncrement($1); }
     | LeftHandSideExpressionNoBF "--" { $$ = new(driver.pool_) CYPostDecrement($1); }
     ;
-
+/* }}} */
+/* 11.4 Unary Operators {{{ */
 UnaryExpression_
     : "delete" UnaryExpression { $$ = new(driver.pool_) CYDelete($2); }
     | "void" UnaryExpression { $$ = new(driver.pool_) CYVoid($2); }
@@ -531,7 +758,7 @@ UnaryExpression_
     | "\n++" UnaryExpression { $$ = new(driver.pool_) CYPreIncrement($2); }
     | "--" UnaryExpression { $$ = new(driver.pool_) CYPreDecrement($2); }
     | "\n--" UnaryExpression { $$ = new(driver.pool_) CYPreDecrement($2); }
-    | "+" UnaryExpression { $$ = $2; }
+    | "+" UnaryExpression { $$ = new(driver.pool_) CYAffirm($2); }
     | "-" UnaryExpression { $$ = new(driver.pool_) CYNegate($2); }
     | "~" UnaryExpression { $$ = new(driver.pool_) CYBitwiseNot($2); }
     | "!" UnaryExpression { $$ = new(driver.pool_) CYLogicalNot($2); }
@@ -546,7 +773,8 @@ UnaryExpressionNoBF
     : PostfixExpressionNoBF { $$ = $1; }
     | UnaryExpression_ { $$ = $1; }
     ;
-
+/* }}} */
+/* 11.5 Multiplicative Operators {{{ */
 MultiplicativeExpression
     : UnaryExpression { $$ = $1; }
     | MultiplicativeExpression "*" UnaryExpression { $$ = new(driver.pool_) CYMultiply($1, $3); }
@@ -560,7 +788,8 @@ MultiplicativeExpressionNoBF
     | MultiplicativeExpressionNoBF "/" UnaryExpression { $$ = new(driver.pool_) CYDivide($1, $3); }
     | MultiplicativeExpressionNoBF "%" UnaryExpression { $$ = new(driver.pool_) CYModulus($1, $3); }
     ;
-
+/* }}} */
+/* 11.6 Additive Operators {{{ */
 AdditiveExpression
     : MultiplicativeExpression { $$ = $1; }
     | AdditiveExpression "+" MultiplicativeExpression { $$ = new(driver.pool_) CYAdd($1, $3); }
@@ -572,7 +801,8 @@ AdditiveExpressionNoBF
     | AdditiveExpressionNoBF "+" MultiplicativeExpression { $$ = new(driver.pool_) CYAdd($1, $3); }
     | AdditiveExpressionNoBF "-" MultiplicativeExpression { $$ = new(driver.pool_) CYSubtract($1, $3); }
     ;
-
+/* }}} */
+/* 11.7 Bitwise Shift Operators {{{ */
 ShiftExpression
     : AdditiveExpression { $$ = $1; }
     | ShiftExpression "<<" AdditiveExpression { $$ = new(driver.pool_) CYShiftLeft($1, $3); }
@@ -586,36 +816,37 @@ ShiftExpressionNoBF
     | ShiftExpressionNoBF ">>" AdditiveExpression { $$ = new(driver.pool_) CYShiftRightSigned($1, $3); }
     | ShiftExpressionNoBF ">>>" AdditiveExpression { $$ = new(driver.pool_) CYShiftRightUnsigned($1, $3); }
     ;
+/* }}} */
+/* 11.8 Relational Operators {{{ */
+RelationalExpressionNoIn_
+    : "<" ShiftExpression { $$ = new(driver.pool_) CYLess(NULL, $2); }
+    | ">" ShiftExpression { $$ = new(driver.pool_) CYGreater(NULL, $2); }
+    | "<=" ShiftExpression { $$ = new(driver.pool_) CYLessOrEqual(NULL, $2); }
+    | ">=" ShiftExpression { $$ = new(driver.pool_) CYGreaterOrEqual(NULL, $2); }
+    | "instanceof" ShiftExpression { $$ = new(driver.pool_) CYInstanceOf(NULL, $2); }
+    ;
+
+RelationalExpression_
+    : RelationalExpressionNoIn_ { $$ = $1; }
+    | "in" ShiftExpression { $$ = new(driver.pool_) CYIn(NULL, $2); }
+    ;
 
 RelationalExpression
     : ShiftExpression { $$ = $1; }
-    | RelationalExpression "<" ShiftExpression { $$ = new(driver.pool_) CYLess($1, $3); }
-    | RelationalExpression ">" ShiftExpression { $$ = new(driver.pool_) CYGreater($1, $3); }
-    | RelationalExpression "<=" ShiftExpression { $$ = new(driver.pool_) CYLessOrEqual($1, $3); }
-    | RelationalExpression ">=" ShiftExpression { $$ = new(driver.pool_) CYGreaterOrEqual($1, $3); }
-    | RelationalExpression "instanceof" ShiftExpression { $$ = new(driver.pool_) CYInstanceOf($1, $3); }
-    | RelationalExpression "in" ShiftExpression { $$ = new(driver.pool_) CYIn($1, $3); }
+    | RelationalExpression RelationalExpression_ { $2->SetLeft($1); $$ = $2; }
     ;
 
 RelationalExpressionNoIn
     : ShiftExpression { $$ = $1; }
-    | RelationalExpressionNoIn "<" ShiftExpression { $$ = new(driver.pool_) CYLess($1, $3); }
-    | RelationalExpressionNoIn ">" ShiftExpression { $$ = new(driver.pool_) CYGreater($1, $3); }
-    | RelationalExpressionNoIn "<=" ShiftExpression { $$ = new(driver.pool_) CYLessOrEqual($1, $3); }
-    | RelationalExpressionNoIn ">=" ShiftExpression { $$ = new(driver.pool_) CYGreaterOrEqual($1, $3); }
-    | RelationalExpressionNoIn "instanceof" ShiftExpression { $$ = new(driver.pool_) CYInstanceOf($1, $3); }
+    | RelationalExpressionNoIn RelationalExpressionNoIn_ { $2->SetLeft($1); $$ = $2; }
     ;
 
 RelationalExpressionNoBF
     : ShiftExpressionNoBF { $$ = $1; }
-    | RelationalExpressionNoBF "<" ShiftExpression { $$ = new(driver.pool_) CYLess($1, $3); }
-    | RelationalExpressionNoBF ">" ShiftExpression { $$ = new(driver.pool_) CYGreater($1, $3); }
-    | RelationalExpressionNoBF "<=" ShiftExpression { $$ = new(driver.pool_) CYLessOrEqual($1, $3); }
-    | RelationalExpressionNoBF ">=" ShiftExpression { $$ = new(driver.pool_) CYGreaterOrEqual($1, $3); }
-    | RelationalExpressionNoBF "instanceof" ShiftExpression { $$ = new(driver.pool_) CYInstanceOf($1, $3); }
-    | RelationalExpressionNoBF "in" ShiftExpression { $$ = new(driver.pool_) CYIn($1, $3); }
+    | RelationalExpressionNoBF RelationalExpression_ { $2->SetLeft($1); $$ = $2; }
     ;
-
+/* }}} */
+/* 11.9 Equality Operators {{{ */
 EqualityExpression
     : RelationalExpression { $$ = $1; }
     | EqualityExpression "==" RelationalExpression { $$ = new(driver.pool_) CYEqual($1, $3); }
@@ -639,7 +870,8 @@ EqualityExpressionNoBF
     | EqualityExpressionNoBF "===" RelationalExpression { $$ = new(driver.pool_) CYIdentical($1, $3); }
     | EqualityExpressionNoBF "!==" RelationalExpression { $$ = new(driver.pool_) CYNotIdentical($1, $3); }
     ;
-
+/* }}} */
+/* 11.10 Binary Bitwise Operators {{{ */
 BitwiseANDExpression
     : EqualityExpression { $$ = $1; }
     | BitwiseANDExpression "&" EqualityExpression { $$ = new(driver.pool_) CYBitwiseAnd($1, $3); }
@@ -684,7 +916,8 @@ BitwiseORExpressionNoBF
     : BitwiseXORExpressionNoBF { $$ = $1; }
     | BitwiseORExpressionNoBF "|" BitwiseXORExpression { $$ = new(driver.pool_) CYBitwiseOr($1, $3); }
     ;
-
+/* }}} */
+/* 11.11 Binary Logical Operators {{{ */
 LogicalANDExpression
     : BitwiseORExpression { $$ = $1; }
     | LogicalANDExpression "&&" BitwiseORExpression { $$ = new(driver.pool_) CYLogicalAnd($1, $3); }
@@ -714,7 +947,8 @@ LogicalORExpressionNoBF
     : LogicalANDExpressionNoBF { $$ = $1; }
     | LogicalORExpressionNoBF "||" LogicalANDExpression { $$ = new(driver.pool_) CYLogicalOr($1, $3); }
     ;
-
+/* }}} */
+/* 11.12 Conditional Operator ( ? : ) {{{ */
 ConditionalExpression
     : LogicalORExpression { $$ = $1; }
     | LogicalORExpression "?" AssignmentExpression ":" AssignmentExpression { $$ = new(driver.pool_) CYCondition($1, $3, $5); }
@@ -729,62 +963,67 @@ ConditionalExpressionNoBF
     : LogicalORExpressionNoBF { $$ = $1; }
     | LogicalORExpressionNoBF "?" AssignmentExpression ":" AssignmentExpression { $$ = new(driver.pool_) CYCondition($1, $3, $5); }
     ;
+/* }}} */
+/* 11.13 Assignment Operators {{{ */
+AssignmentExpression_
+    : "=" AssignmentExpression { $$ = new(driver.pool_) CYAssign(NULL, $2); }
+    | "*=" AssignmentExpression { $$ = new(driver.pool_) CYMultiplyAssign(NULL, $2); }
+    | "/=" AssignmentExpression { $$ = new(driver.pool_) CYDivideAssign(NULL, $2); }
+    | "%=" AssignmentExpression { $$ = new(driver.pool_) CYModulusAssign(NULL, $2); }
+    | "+=" AssignmentExpression { $$ = new(driver.pool_) CYAddAssign(NULL, $2); }
+    | "-=" AssignmentExpression { $$ = new(driver.pool_) CYSubtractAssign(NULL, $2); }
+    | "<<=" AssignmentExpression { $$ = new(driver.pool_) CYShiftLeftAssign(NULL, $2); }
+    | ">>=" AssignmentExpression { $$ = new(driver.pool_) CYShiftRightSignedAssign(NULL, $2); }
+    | ">>>=" AssignmentExpression { $$ = new(driver.pool_) CYShiftRightUnsignedAssign(NULL, $2); }
+    | "&=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseAndAssign(NULL, $2); }
+    | "^=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseXOrAssign(NULL, $2); }
+    | "|=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseOrAssign(NULL, $2); }
+    ;
+
+AssigneeExpression
+    : LeftHandSideExpression { $$ = $1; }
+    | AssigneeExpression_ { $$ = $1; }
+    ;
+
+AssigneeExpressionNoBF
+    : LeftHandSideExpressionNoBF { $$ = $1; }
+    | AssigneeExpression_ { $$ = $1; }
+    ;
 
 AssignmentExpression
     : ConditionalExpression { $$ = $1; }
-    | LeftHandSideExpression "=" AssignmentExpression { $$ = new(driver.pool_) CYAssign($1, $3); }
-    | LeftHandSideExpression "*=" AssignmentExpression { $$ = new(driver.pool_) CYMultiplyAssign($1, $3); }
-    | LeftHandSideExpression "/=" AssignmentExpression { $$ = new(driver.pool_) CYDivideAssign($1, $3); }
-    | LeftHandSideExpression "%=" AssignmentExpression { $$ = new(driver.pool_) CYModulusAssign($1, $3); }
-    | LeftHandSideExpression "+=" AssignmentExpression { $$ = new(driver.pool_) CYAddAssign($1, $3); }
-    | LeftHandSideExpression "-=" AssignmentExpression { $$ = new(driver.pool_) CYSubtractAssign($1, $3); }
-    | LeftHandSideExpression "<<=" AssignmentExpression { $$ = new(driver.pool_) CYShiftLeftAssign($1, $3); }
-    | LeftHandSideExpression ">>=" AssignmentExpression { $$ = new(driver.pool_) CYShiftRightSignedAssign($1, $3); }
-    | LeftHandSideExpression ">>>=" AssignmentExpression { $$ = new(driver.pool_) CYShiftRightUnsignedAssign($1, $3); }
-    | LeftHandSideExpression "&=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseAndAssign($1, $3); }
-    | LeftHandSideExpression "^=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseXOrAssign($1, $3); }
-    | LeftHandSideExpression "|=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseOrAssign($1, $3); }
+    | AssigneeExpression AssignmentExpression_ { $2->SetLeft($1); $$ = $2; }
     ;
 
 AssignmentExpressionNoIn
     : ConditionalExpressionNoIn { $$ = $1; }
-    | LeftHandSideExpression "=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYAssign($1, $3); }
-    | LeftHandSideExpression "*=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYMultiplyAssign($1, $3); }
-    | LeftHandSideExpression "/=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYDivideAssign($1, $3); }
-    | LeftHandSideExpression "%=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYModulusAssign($1, $3); }
-    | LeftHandSideExpression "+=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYAddAssign($1, $3); }
-    | LeftHandSideExpression "-=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYSubtractAssign($1, $3); }
-    | LeftHandSideExpression "<<=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYShiftLeftAssign($1, $3); }
-    | LeftHandSideExpression ">>=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYShiftRightSignedAssign($1, $3); }
-    | LeftHandSideExpression ">>>=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYShiftRightUnsignedAssign($1, $3); }
-    | LeftHandSideExpression "&=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYBitwiseAndAssign($1, $3); }
-    | LeftHandSideExpression "^=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYBitwiseXOrAssign($1, $3); }
-    | LeftHandSideExpression "|=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYBitwiseOrAssign($1, $3); }
+    | AssigneeExpression "=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYAssign($1, $3); }
+    | AssigneeExpression "*=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYMultiplyAssign($1, $3); }
+    | AssigneeExpression "/=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYDivideAssign($1, $3); }
+    | AssigneeExpression "%=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYModulusAssign($1, $3); }
+    | AssigneeExpression "+=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYAddAssign($1, $3); }
+    | AssigneeExpression "-=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYSubtractAssign($1, $3); }
+    | AssigneeExpression "<<=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYShiftLeftAssign($1, $3); }
+    | AssigneeExpression ">>=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYShiftRightSignedAssign($1, $3); }
+    | AssigneeExpression ">>>=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYShiftRightUnsignedAssign($1, $3); }
+    | AssigneeExpression "&=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYBitwiseAndAssign($1, $3); }
+    | AssigneeExpression "^=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYBitwiseXOrAssign($1, $3); }
+    | AssigneeExpression "|=" AssignmentExpressionNoIn { $$ = new(driver.pool_) CYBitwiseOrAssign($1, $3); }
     ;
 
 AssignmentExpressionNoBF
     : ConditionalExpressionNoBF { $$ = $1; }
-    | LeftHandSideExpressionNoBF "=" AssignmentExpression { $$ = new(driver.pool_) CYAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "*=" AssignmentExpression { $$ = new(driver.pool_) CYMultiplyAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "/=" AssignmentExpression { $$ = new(driver.pool_) CYDivideAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "%=" AssignmentExpression { $$ = new(driver.pool_) CYModulusAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "+=" AssignmentExpression { $$ = new(driver.pool_) CYAddAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "-=" AssignmentExpression { $$ = new(driver.pool_) CYSubtractAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "<<=" AssignmentExpression { $$ = new(driver.pool_) CYShiftLeftAssign($1, $3); }
-    | LeftHandSideExpressionNoBF ">>=" AssignmentExpression { $$ = new(driver.pool_) CYShiftRightSignedAssign($1, $3); }
-    | LeftHandSideExpressionNoBF ">>>=" AssignmentExpression { $$ = new(driver.pool_) CYShiftRightUnsignedAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "&=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseAndAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "^=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseXOrAssign($1, $3); }
-    | LeftHandSideExpressionNoBF "|=" AssignmentExpression { $$ = new(driver.pool_) CYBitwiseOrAssign($1, $3); }
+    | AssigneeExpressionNoBF AssignmentExpression_ { $2->SetLeft($1); $$ = $2; }
     ;
-
+/* }}} */
+/* 11.14 Comma Operator {{{ */
 Expression_
-    : "," Expression { $$ = $2; }
+    : "," Expression { $$ = new(driver.pool_) CYCompound($2); }
     | { $$ = NULL; }
     ;
 
 ExpressionNoIn_
-    : "," ExpressionNoIn { $$ = $2; }
+    : "," ExpressionNoIn { $$ = new(driver.pool_) CYCompound($2); }
     | { $$ = NULL; }
     ;
 
@@ -799,18 +1038,20 @@ ExpressionNoInOpt
     ;
 
 Expression
-    : AssignmentExpression Expression_ { if ($1) { $1->SetNext($2); $$ = $1; } else $$ = $2; }
+    : AssignmentExpression Expression_ { if ($2) { $2->AddPrev($1); $$ = $2; } else $$ = $1; }
     ;
 
 ExpressionNoIn
-    : AssignmentExpressionNoIn ExpressionNoIn_ { if ($1) { $1->SetNext($2); $$ = $1; } else $$ = $2; }
+    : AssignmentExpressionNoIn ExpressionNoIn_ { if ($2) { $2->AddPrev($1); $$ = $2; } else $$ = $1; }
     ;
 
 ExpressionNoBF
-    : AssignmentExpressionNoBF Expression_ { if ($1) { $1->SetNext($2); $$ = $1; } else $$ = $2; }
+    : AssignmentExpressionNoBF Expression_ { if ($2) { $2->AddPrev($1); $$ = $2; } else $$ = $1; }
     ;
+/* }}} */
 
-Statement
+/* 12 Statements {{{ */
+Statement_
     : Block { $$ = $1; }
     | VariableStatement { $$ = $1; }
     | EmptyStatement { $$ = $1; }
@@ -827,9 +1068,17 @@ Statement
     | TryStatement { $$ = $1; }
     ;
 
+Statement
+    : Statement_ { $$ = $1; }
+    ;
+/* }}} */
+/* 12.1 Block {{{ */
+Block_
+    : "{" StatementListOpt "}" { $$ = $2; }
+    ;
+
 Block
-    : "{" "}" { $$ = new(driver.pool_) CYEmpty(); }
-    | "{" StatementList "}" { $$ = $2; }
+    : Block_ { if ($1) $$ = new(driver.pool_) CYBlock($1); else $$ = new(driver.pool_) CYEmpty(); }
     ;
 
 StatementList
@@ -840,9 +1089,10 @@ StatementListOpt
     : StatementList { $$ = $1; }
     | { $$ = NULL; }
     ;
-
+/* }}} */
+/* 12.2 Variable Statement {{{ */
 VariableStatement
-    : "var" VariableDeclarationList Terminator { $$ = $2; }
+    : "var" VariableDeclarationList Terminator { $$ = new(driver.pool_) CYVar($2); }
     ;
 
 VariableDeclarationList_
@@ -888,15 +1138,18 @@ Initialiser
 InitialiserNoIn
     : "=" AssignmentExpressionNoIn { $$ = $2; }
     ;
-
+/* }}} */
+/* 12.3 Empty Statement {{{ */
 EmptyStatement
     : ";" { $$ = new(driver.pool_) CYEmpty(); }
     ;
-
+/* }}} */
+/* 12.4 Expression Statement {{{ */
 ExpressionStatement
     : ExpressionNoBF Terminator { $$ = new(driver.pool_) CYExpress($1); }
     ;
-
+/* }}} */
+/* 12.5 The if Statement {{{ */
 ElseStatementOpt
     : "else" Statement { $$ = $2; }
     | %prec "if" { $$ = NULL; }
@@ -905,22 +1158,27 @@ ElseStatementOpt
 IfStatement
     : "if" "(" Expression ")" Statement ElseStatementOpt { $$ = new(driver.pool_) CYIf($3, $5, $6); }
     ;
+/* }}} */
 
+/* 12.6 Iteration Statements {{{ */
 IterationStatement
     : DoWhileStatement { $$ = $1; }
     | WhileStatement { $$ = $1; }
     | ForStatement { $$ = $1; }
     | ForInStatement { $$ = $1; }
     ;
-
+/* }}} */
+/* 12.6.1 The do-while Statement {{{ */
 DoWhileStatement
     : "do" Statement "while" "(" Expression ")" TerminatorOpt { $$ = new(driver.pool_) CYDoWhile($5, $2); }
     ;
-
+/* }}} */
+/* 12.6.2 The while Statement {{{ */
 WhileStatement
     : "while" "(" Expression ")" Statement { $$ = new(driver.pool_) CYWhile($3, $5); }
     ;
-
+/* }}} */
+/* 12.6.3 The for Statement {{{ */
 ForStatement
     : "for" "(" ForStatementInitialiser ";" ExpressionOpt ";" ExpressionOpt ")" Statement { $$ = new(driver.pool_) CYFor($3, $5, $7, $9); }
     ;
@@ -929,7 +1187,8 @@ ForStatementInitialiser
     : ExpressionNoInOpt { $$ = $1; }
     | "var" VariableDeclarationListNoIn { $$ = $2; }
     ;
-
+/* }}} */
+/* 12.6.4 The for-in Statement {{{ */
 ForInStatement
     : "for" "(" ForInStatementInitialiser "in" Expression ")" Statement { $$ = new(driver.pool_) CYForIn($3, $5, $7); }
     ;
@@ -938,23 +1197,30 @@ ForInStatementInitialiser
     : LeftHandSideExpression { $$ = $1; }
     | "var" VariableDeclarationNoIn { $$ = $2; }
     ;
+/* }}} */
 
+/* 12.7 The continue Statement {{{ */
 ContinueStatement
     : "continue" IdentifierOpt Terminator { $$ = new(driver.pool_) CYContinue($2); }
     ;
-
+/* }}} */
+/* 12.8 The break Statement {{{ */
 BreakStatement
     : "break" IdentifierOpt Terminator { $$ = new(driver.pool_) CYBreak($2); }
     ;
-
+/* }}} */
+/* 12.9 The return Statement {{{ */
 ReturnStatement
     : "return" ExpressionOpt Terminator { $$ = new(driver.pool_) CYReturn($2); }
     ;
-
+/* }}} */
+/* 12.10 The with Statement {{{ */
 WithStatement
     : "with" "(" Expression ")" Statement { $$ = new(driver.pool_) CYWith($3, $5); }
     ;
+/* }}} */
 
+/* 12.11 The switch Statement {{{ */
 SwitchStatement
     : "switch" "(" Expression ")" CaseBlock { $$ = new(driver.pool_) CYSwitch($3, $5); }
     ;
@@ -976,35 +1242,40 @@ CaseClause
 DefaultClause
     : "default" ":" StatementListOpt { $$ = new(driver.pool_) CYClause(NULL, $3); }
     ;
-
+/* }}} */
+/* 12.12 Labelled Statements {{{ */
 LabelledStatement
-    : Identifier ":" Statement { $3->AddLabel($1); $$ = $3; }
+    : Identifier ":" Statement { $$ = new(driver.pool_) CYLabel($1, $3); }
     ;
-
+/* }}} */
+/* 12.13 The throw Statement {{{ */
 ThrowStatement
     : "throw" Expression Terminator { $$ = new(driver.pool_) CYThrow($2); }
     ;
-
+/* }}} */
+/* 12.14 The try Statement {{{ */
 TryStatement
-    : "try" Block CatchOpt FinallyOpt { $$ = new(driver.pool_) CYTry($2, $3, $4); }
+    : "try" Block_ CatchOpt FinallyOpt { $$ = new(driver.pool_) CYTry($2, $3, $4); }
     ;
 
 CatchOpt
-    : "catch" "(" Identifier ")" Block { $$ = new(driver.pool_) CYCatch($3, $5); }
+    : "catch" "(" Identifier ")" Block_ { $$ = new(driver.pool_) CYCatch($3, $5); }
     | { $$ = NULL; }
     ;
 
 FinallyOpt
-    : "finally" Block { $$ = $2; }
+    : "finally" Block_ { $$ = new(driver.pool_) CYFinally($2); }
     | { $$ = NULL; }
     ;
+/* }}} */
 
+/* 13 Function Definition {{{ */
 FunctionDeclaration
-    : "function" Identifier "(" FormalParameterList ")" "{" FunctionBody "}" { $$ = new(driver.pool_) CYFunction($2, $4, $7); }
+    : "function" Identifier "(" FormalParameterList ")" "{" FunctionBody "}" { $$ = new(driver.pool_) CYFunctionStatement($2, $4, $7); }
     ;
 
 FunctionExpression
-    : "function" IdentifierOpt "(" FormalParameterList ")" "{" FunctionBody "}" { $$ = new(driver.pool_) CYLambda($2, $4, $7); }
+    : "function" IdentifierOpt "(" FormalParameterList ")" "{" FunctionBody "}" { $$ = new(driver.pool_) CYFunctionExpression($2, $4, $7); }
     ;
 
 FormalParameterList_
@@ -1013,16 +1284,17 @@ FormalParameterList_
     ;
 
 FormalParameterList
-    : Identifier FormalParameterList_ { $$ = new(driver.pool_) CYParameter($1, $2); }
+    : Identifier FormalParameterList_ { $$ = new(driver.pool_) CYFunctionParameter($1, $2); }
     | { $$ = NULL; }
     ;
 
 FunctionBody
     : SourceElements { $$ = $1; }
     ;
-
+/* }}} */
+/* 14 Program {{{ */
 Program
-    : SourceElements { driver.source_.push_back($1); $$ = $1; }
+    : SourceElements { driver.program_ = new(driver.pool_) CYProgram($1); }
     ;
 
 SourceElements
@@ -1030,16 +1302,91 @@ SourceElements
     | { $$ = NULL; }
     ;
 
-/*Command
-    : SourceElement { driver.source_.push_back($2); if (driver.filename_.empty() && false) YYACCEPT; $2->Show(std::cout); }
-    ;*/
-
 SourceElement
-    : Statement { $$ = $1; }
+    : Statement_ { $$ = $1; }
     | FunctionDeclaration { $$ = $1; }
     ;
+/* }}} */
+
+/* Cycript: @class Declaration {{{ */
+ClassSuperOpt
+    : ":" MemberExpressionNoBF { $$ = $2; }
+    | { $$ = NULL; }
+    ;
+
+ClassFieldList
+    : "{" "}" { $$ = NULL; }
+    ;
+
+MessageScope
+    : "+" { $$ = false; }
+    | "-" { $$ = true; }
+    ;
+
+TypeOpt
+    : "(" Expression ")" { $$ = $2; }
+    | { $$ = NULL; }
+    ;
+
+MessageParameter
+    : Word ":" TypeOpt Identifier { $$ = new(driver.pool_) CYMessageParameter($1, $3, $4); }
+    ;
+
+MessageParameterListOpt
+    : MessageParameterList { $$ = $1; }
+    | { $$ = NULL; }
+    ;
+
+MessageParameterList
+    : MessageParameter MessageParameterListOpt { $1->SetNext($2); $$ = $1; }
+    ;
+
+MessageParameters
+    : MessageParameterList { $$ = $1; }
+    | Word { $$ = new(driver.pool_) CYMessageParameter($1, NULL, NULL); }
+    ;
+
+ClassMessageDeclaration
+    : MessageScope TypeOpt MessageParameters "{" FunctionBody "}" { $$ = new(driver.pool_) CYMessage($1, $2, $3, $5); }
+    ;
+
+ClassMessageDeclarationListOpt
+    : ClassMessageDeclarationListOpt ClassMessageDeclaration { $2->SetNext($1); $$ = $2; }
+    | { $$ = NULL; }
+    ;
+
+ClassName
+    : Identifier { $$ = $1; }
+    | "(" AssignmentExpression ")" { $$ = $2; }
+    ;
+
+ClassNameOpt
+    : ClassName { $$ = $1; }
+    | { $$ = NULL; }
+    ;
 
-/* Objective-C Extensions {{{ */
+ClassExpression
+    : "@class" ClassNameOpt ClassSuperOpt ClassFieldList ClassMessageDeclarationListOpt "@end" { $$ = new(driver.pool_) CYClassExpression($2, $3, $4, $5); }
+    ;
+
+ClassStatement
+    : "@class" ClassName ClassSuperOpt ClassFieldList ClassMessageDeclarationListOpt "@end" { $$ = new(driver.pool_) CYClassStatement($2, $3, $4, $5); }
+    ;
+
+CategoryStatement
+    : "@class" ClassName ClassMessageDeclarationListOpt "@end" { $$ = new(driver.pool_) CYCategory($2, $3); }
+    ;
+
+PrimaryExpression
+    : ClassExpression { $$ = $1; }
+    ;
+
+Statement_
+    : ClassStatement { $$ = $1; }
+    | CategoryStatement { $$ = $1; }
+    ;
+/* }}} */
+/* Cycript: Send Message {{{ */
 VariadicCall
     : "," AssignmentExpression VariadicCall { $$ = new(driver.pool_) CYArgument(NULL, $2, $3); }
     | { $$ = NULL; }
@@ -1060,20 +1407,89 @@ SelectorList
     ;
 
 MessageExpression
-    : "[" AssignmentExpression SelectorList "]" { $$ = new(driver.pool_) CYMessage($2, $3); }
+    : "[" AssignmentExpression SelectorList "]" { $$ = new(driver.pool_) CYSend($2, $3); }
+    ;
+
+SelectorExpressionOpt
+    : SelectorExpression_ { $$ = $1; }
+    | { $$ = NULL; }
+    ;
+
+SelectorExpression_
+    : WordOpt ":" SelectorExpressionOpt { $$ = new(driver.pool_) CYSelectorPart($1, true, $3); }
+    ;
+
+SelectorExpression
+    : SelectorExpression_ { $$ = $1; }
+    | Word { $$ = new(driver.pool_) CYSelectorPart($1, false, NULL); }
     ;
 
 PrimaryExpression_
     : MessageExpression { $$ = $1; }
+    | "@selector" "(" SelectorExpression ")" { $$ = new(driver.pool_) CYSelector($3); }
     ;
 /* }}} */
-
-LeftHandSideExpression_
-    : "*" LeftHandSideExpression { $$ = new(driver.pool_) CYIndirect($2); }
+/* Cycript: Pointer Indirection/Addressing {{{ */
+AssigneeExpression_
+    : "*" UnaryExpression { $$ = new(driver.pool_) CYIndirect($2); }
     ;
 
 UnaryExpression_
     : "&" UnaryExpression { $$ = new(driver.pool_) CYAddressOf($2); }
     ;
 
+MemberAccess
+    : "->" "[" Expression "]" { $$ = new(driver.pool_) CYIndirectMember(NULL, $3); }
+    | "->" Identifier { $$ = new(driver.pool_) CYIndirectMember(NULL, new(driver.pool_) CYString($2)); }
+    ;
+/* }}} */
+/* ECMAScript5: Object Literal Trailing Comma {{{ */
+PropertyNameAndValueList_
+    : "," { $$ = NULL; }
+    ;
+/* }}} */
+/* JavaScript 1.7: Array Comprehensions {{{ */
+IfComprehension
+    : "if" "(" Expression ")" { $$ = new(driver.pool_) CYIfComprehension($3); }
+    ;
+
+ForComprehension
+    : "for" "(" Identifier "in" Expression ")" { $$ = new(driver.pool_) CYForInComprehension($3, $5); }
+    | "for" "each" "(" Identifier "in" Expression ")" { $$ = new(driver.pool_) CYForEachInComprehension($4, $6); }
+    ;
+
+ComprehensionListOpt
+    : ComprehensionList { $$ = $1; }
+    | IfComprehension { $$ = $1; }
+    | { $$ = NULL; }
+    ;
+
+ComprehensionList
+    : ForComprehension ComprehensionListOpt { $1->SetNext($2); $$ = $1; }
+    ;
+
+PrimaryExpression_
+    : "[" AssignmentExpression ComprehensionList "]" { $$ = new(driver.pool_) CYArrayComprehension($2, $3); }
+    ;
+/* }}} */
+/* JavaScript 1.7: for each {{{ */
+ForInStatement
+    : "for" "each" "(" ForInStatementInitialiser "in" Expression ")" Statement { $$ = new(driver.pool_) CYForEachIn($4, $6, $8); }
+    ;
+/* }}} */
+/* JavaScript 1.7: let Statements {{{ *//*
+LetStatement
+    : "let" "(" VariableDeclarationList ")" Block_ { $$ = new(driver.pool_) CYLet($3, $5); }
+    ;
+
+Statement
+    : LetStatement
+    ;
+*//* }}} */
+/* JavaScript FTW: Function Statements {{{ */
+Statement
+    : FunctionDeclaration { driver.Warning(yylloc, "warning, FunctionDeclaration is a SourceElement, not a Statement"); } { $$ = $1; }
+    ;
+/* }}} */
+
 %%