science

type ListAssembler interface {
	AssembleValue() NodeAssembler

	Append(Node)

	Done()
}

type MapAssembler interface {
	AssembleKey() MapKeyAssembler

	Insert(string, Node)
	Insert2(Node, Node)

	Done()
}

type MapKeyAssembler interface {
	NodeAssembler
	AssembleValue() MapValueAssembler
}

type MapValueAssembler interface {
	NodeAssembler
}

type Node interface {
}

type NodeAssembler interface {
	BeginMap() MapAssembler
	BeginList() ListAssembler
	AssignNull()
	AssignBool(bool)
	AssignInt(int)
	AssignFloat(float64)
	AssignString(string)
	AssignBytes([]byte)

	Assign(Node)
	CheckError() error // where are these stored?  when each child is done, could check this.  and have it stored in each child.  means each allocs (nonzero struct)... but isn't that true anyway?  yeah.  well, except now you're apparently getting that for scalars, which is bad.
}

type NodeBuilder interface {
	NodeAssembler
	Build() (Node, error)
}