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The cool programming language syntax — [...] zero or one, (...)* zero or more
program:
( definition )*
definition:
int IDENT [ "=" intconst ] ";"
| int IDENT "(" formalparams ")" block
| void IDENT "(" formalparams ")" block
formalparams:
void
| int IDENT ( "," int IDENT )*
block:
"{" ( definition | statement )* "}"
statement:
definition
| block
| IDENT "=" expression ";"
| if "(" expression ")" block [ else block ]
| while "(" expression ")" block
| return [ expression ] ";"
| print ( string | expression ) ";"
| IDENTvalue ";"
expression:
term [ ("+" | "-") expression ]
term:
factor [ ("*" | "/") term ]
factor:
intconst
| IDENTvalue
| "(" expression ")"
IDENTvalue:
IDENT [ "(" actualparams ")" ]
actualparams:
expression ( "," expression )*
| empty
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