GRAMMAR

<program> = <statement-list>

<array-row> = [ <expression> { [","] <expression> } [";"] ]

<array-matrix> = "[" { <array-row> } "]"

<param-list> = <expression> { "," <expression> }

<primary_expression> = "ID" 
					| "NUMBER" 
					| "STRING"
          | ":"
          | "end"
					| <array-matrix>
					| "(" expression ")"


<postfix-expression> = <primary-expression> [ ( "(" [ <param-list> ] ")" ) | " ]

<unary-expression> = { ( "-" | "+" ) } <postfix-expression>

<power-expression> = <unary-expression> { ("^" | ".^") <unary-expression> }

<multiplicative-expression> = <power-expression> { ("+" | "-" | ".*" | "./") <power-expression>}

<additive-expression> = <multiplicative-expression> { ("+" | "-") <multiplicative_expression>}

<relational-expression> = <additive-expression> { ("<" | "<=" |">" | ">=") <additive-expression> }

<equality-expression> = <relational-expression> { ("==" | "~=") <relational-expression> }

<and-expression> = <equality-expression> { "&&" <equality-expression> }

<or-expression> = <and-expression> { "||" <and-expression> }

<range-expression> = <or-expression> { ":" <or-expression> } ":" <or-expression>

<assginment-expression> = <range-expression> "=" <range-expression>

<selection-expression> = "(" <range-expression> ")"

<switch-statement> = "switch" ["("] <selection-expr> [")"] { "case" <selection-expr> <statement-list> } [ "otherwise" <statement-list> ] "end"

<if-statement> = "if" ["("] <range-expression> [")"] <statement-list> { "elseif" <statement-list> } [ "else" <statement-list> ] "end"

<jump-statement> = "break" | "continue" | "return"

<for-statement> = "for"  ["("] "ID" "=" <range-expression> [")"]  <statement-list> "end"

<while-statement> = "while"  ["("] <range-expression> [")"]  <statement-list> "end"

<function-declaration> = "function" [ <primary-expression> "=" ] "ID" "(" <param-list> ")" <statement-list> "end"

<expression-terminator> = (";" | "," | "\n" | "EOF")

<statement-expression>  = 
						 ( <assignment-expression>
						 | <if-statement>
						 | <switch-statement>
						 | <while-statement>
						 | <for-statement>
						 | <function-declaration>
						 | <jump-declaration> ) [ <expression-terminator> ]

<statement-list> = { <statement-expression> }