Method parseAdditiveExpr

parse.go:260–277

AdditiveExpr ::= MultiplicativeExpr | AdditiveExpr '+' MultiplicativeExpr | AdditiveExpr '-' MultiplicativeExpr

(n node)

// AdditiveExpr	::= MultiplicativeExpr	| AdditiveExpr '+' MultiplicativeExpr | AdditiveExpr '-' MultiplicativeExpr
func (p *parser) parseAdditiveExpr(n node) node {
	opnd := p.parseMultiplicativeExpr(n)
Loop:
	for {
		var op string
		switch p.r.typ {
		case itemPlus:
			op = "+"
		case itemMinus:
			op = "-"
		default:
			break Loop
		}
		p.next()
		opnd = newOperatorNode(op, opnd, p.parseMultiplicativeExpr(n))
	}
	return opnd
}

// MultiplicativeExpr ::= UnaryExpr	| MultiplicativeExpr MultiplyOperator(*) UnaryExpr
//