Program -> Statements

Statements -> Statement...

Block -> '{' Statements '}' ImportStmt -> IMPORT (String/,)...

VarStmt -> VAR (VarDecl/',')...

VarDecl -> Ident [Array] [InitValue]

Array -> '[' (ArrayDim/',')... ']'

ArrayDim -> Expression

InitValue -> '=' Expression Expression -> SimpleExpression [RelOp SimpleExpression]...

SimpleExpression -> ['-'] Term [AddOp Term]...

Term -> Factor [MulOp Factor]...

Factor -> Designator

       -> UnsignedNumber

       -> String

       -> '(' Expression ')'

       -> '!' Factor

       -> '[' SetConstructor ']'

       -> NewOperator

       -> '<' FRString '>' SetConstructor -> SetNode/','...

SetNode -> Expression ['..' Expression] NewOperator -> NEW Designator

RelOp -> '>'

      -> '<'

      -> '<='

      -> '>='

      -> '!='

      -> '=='

      -> IN

      -> IS

AddOp -> '+'

      -> '-'

      -> '||'

      -> '^'

MulOp -> '*'

      -> '/'

      -> '%'

      -> '&&'

      -> '<<'

      -> '>>'

Designator -> ['&'] Ident ['.' Ident | '[' ExprList ']' | '(' [ExprList] ')']...

ExprList -> Expression/','...

Statement -> (AssignStmt | CallStmt | BreakStmt | ContinueStmt |

              DeleteStmt | DoWhileStmt | ForStmt | FunctionStmt |

              IfStmt | ImportStmt | ReturnStmt | SwitchStmt |

              VarStmt | WhileStmt | WithStmt | Block) [';']

BreakStmt -> BREAK

ContinueStmt -> CONTINUE

DeleteStmt -> DELETE Designator AssignStmt -> Designator ['+'|'-'|'*'|'/']'=' Expression

CallStmt -> Designator ['+''+'|'-''-']

ReturnStmt -> RETURN [Expression]

IfStmt -> IF '(' Expression ')' Statement [ELSE Statement]

SwitchStmt -> SWITCH '(' Expression ')' '{' (CaseSelector)... [DEFAULT

':' Statement] '}'

CaseSelector -> CASE SetConstructor ':' Statement DoWhileStmt -> DO Statement [';'] WHILE '(' Expression ')' ';'

WhileStmt -> WHILE '(' Expression ')' Statement

ForStmt -> FOR '(' ForStmtItem ';' Expression ';' ForStmtItem ')'

Statement

ForStmtItem -> AssignStmt

            -> CallStmt

            -> VarStmt

            -> Empty TryStmt -> TRY CompoundStmt (FINALLY | EXCEPT) CompoundStmt

FunctionStmt -> FunctionHeading Block

FunctionHeading -> FUNCTION Ident FormalParameters FormalParameters -> '(' [FormalParam/','...] ')'

FormalParam -> ['&'] Ident

WithStmt -> WITH '(' Designator ')' Statement