private AST.Expression Multiplicative()
{
AST.Expression result = Unary();
while (true)
{
if (IsMatch(TokenType.STAR))
{
result = new AST.BinaryExpression('*', result, Unary());
continue;
}
if (IsMatch(TokenType.SLASH))
{
result = new AST.BinaryExpression('/', result, Unary());
continue;
}
break;
}
return(result);
}
private AST.Expression Additive()
{
AST.Expression result = Multiplicative();
while (true)
{
if (IsMatch(TokenType.PLUS))
{
result = new AST.BinaryExpression('+', result, Multiplicative());
continue;
}
if (IsMatch(TokenType.MINUS))
{
result = new AST.BinaryExpression('-', result, Multiplicative());
continue;
}
break;
}
return(result);
}