JISON_GRAMMAR.md

block : blocklist ;

blocklist : | blocklist command blockterminator ;

blockterminator : | SEMICOLON ;

command : ID ASSIGN exp | functioncall | vardeclaration | WHILE exp DO block END | IF exp THEN block elsestnt END ;

elsestnt : | ELSE block ;

exp : NUMBER | ID | functioncall | exp binop exp | unaryop exp | LPAREN exp RPAREN ;

functioncall : ID LPAREN explist RPAREN ;

vardeclaration : VAR ID expassign ;

expassign : | ASSIGN exp ;

explist : | lexp exp ;

lexp : | lexp exp COMMA ;

binop : PLUS | MINUS | TIMES | DIVIDE | LESS | LESSEQUAL | GREATER | GREATEREQUAL | EQUAL | NOTEQUAL | AND | OR ;

unaryop : MINUS | NOT ;