Bad   bool // true means the literal Value has syntax errors
		expr
	}

	// Type { ElemList[0], ElemList[1], ... }
	CompositeLit struct {
		Type     Expr // nil means no literal type
		ElemList []Expr
		NKeys    int // number of elements with keys
		Rbrace   Pos
		expr
	}

	// Key: Value
	KeyValueExpr struct {
		Key, Value Expr
		expr
	}

	// func Type { Body }
	FuncLit struct {