func (r *describeStmtResult) toSerial(res *serial.Result, fset *token.FileSet) {
	res.Describe = &serial.Describe{
		Desc:   r.description,
		Pos:    fset.Position(r.node.Pos()).String(),
		Detail: "unknown",
	}
}

func (r *definitionResult) toSerial(res *serial.Result, fset *token.FileSet) {
	definition := &serial.Definition{
		Desc: r.obj.String(),
	}
	if pos := r.obj.Pos(); pos != token.NoPos { // Package objects have no Pos()
		definition.ObjPos = fset.Position(pos).String()
	}
	res.Definition = definition
}

func (r *callersResult) toSerial(res *serial.Result, fset *token.FileSet) {
	var callers []serial.Caller
	for _, edge := range r.edges {
		callers = append(callers, serial.Caller{
			Caller: edge.Caller.Func.String(),
			Pos:    fset.Position(edge.Pos()).String(),
			Desc:   edge.Description(),
		})
	}
	res.Callers = callers
}

func (r *calleesResult) toSerial(res *serial.Result, fset *token.FileSet) {
	j := &serial.Callees{
		Pos:  fset.Position(r.site.Pos()).String(),
		Desc: r.site.Common().Description(),
	}
	for _, callee := range r.funcs {
		j.Callees = append(j.Callees, &serial.CalleesItem{
			Name: callee.String(),
			Pos:  fset.Position(callee.Pos()).String(),
		})
	}
	res.Callees = j
}

func (r *referrersResult) toSerial(res *serial.Result, fset *token.FileSet) {
	referrers := &serial.Referrers{
		Pos:  fset.Position(r.query.Pos()).String(),
		Desc: r.obj.String(),
	}
	if pos := r.obj.Pos(); pos != token.NoPos { // Package objects have no Pos()
		referrers.ObjPos = fset.Position(pos).String()
	}
	for _, ref := range r.refs {
		referrers.Refs = append(referrers.Refs, fset.Position(ref.NamePos).String())
	}
	res.Referrers = referrers
}

func (r *freevarsResult) toSerial(res *serial.Result, fset *token.FileSet) {
	var refs []*serial.FreeVar
	for _, ref := range r.refs {
		refs = append(refs,
			&serial.FreeVar{
				Pos:  fset.Position(ref.obj.Pos()).String(),
				Kind: ref.kind,
				Ref:  ref.ref,
				Type: ref.typ.String(),
			})
	}
	res.Freevars = refs
}

func (r *callgraphResult) toSerial(res *serial.Result, fset *token.FileSet) {
	cg := make([]serial.CallGraph, len(r.nodes))
	for _, n := range r.nodes {
		j := &cg[n.ID]
		fn := n.Func
		j.Name = fn.String()
		j.Pos = fset.Position(fn.Pos()).String()
		for callee := range callgraph.CalleesOf(n) {
			j.Children = append(j.Children, callee.ID)
		}
		sort.Ints(j.Children)
	}
	res.Callgraph = cg
}

func (r *callstackResult) toSerial(res *serial.Result, fset *token.FileSet) {
	var callers []serial.Caller
	for i := len(r.callpath) - 1; i >= 0; i-- { // (innermost first)
		edge := r.callpath[i]
		callers = append(callers, serial.Caller{
			Pos:    fset.Position(edge.Pos()).String(),
			Caller: edge.Caller.Func.String(),
			Desc:   edge.Description(),
		})
	}
	res.Callstack = &serial.CallStack{
		Pos:     fset.Position(r.target.Pos()).String(),
		Target:  r.target.String(),
		Callers: callers,
	}
}

func (r *whatResult) toSerial(res *serial.Result, fset *token.FileSet) {
	var enclosing []serial.SyntaxNode
	for _, n := range r.path {
		enclosing = append(enclosing, serial.SyntaxNode{
			Description: astutil.NodeDescription(n),
			Start:       fset.Position(n.Pos()).Offset,
			End:         fset.Position(n.End()).Offset,
		})
	}
	res.What = &serial.What{
		Modes:      r.modes,
		SrcDir:     r.srcdir,
		ImportPath: r.importPath,
		Enclosing:  enclosing,
	}
}

func (r *whicherrsResult) toSerial(res *serial.Result, fset *token.FileSet) {
	we := &serial.WhichErrs{}
	we.ErrPos = fset.Position(r.errpos).String()
	for _, g := range r.globals {
		we.Globals = append(we.Globals, fset.Position(g.Pos()).String())
	}
	for _, c := range r.consts {
		we.Constants = append(we.Constants, fset.Position(c.Pos()).String())
	}
	for _, t := range r.types {
		var et serial.WhichErrsType
		et.Type = r.qpos.TypeString(t.typ)
		et.Position = fset.Position(t.obj.Pos()).String()
		we.Types = append(we.Types, et)
	}
	res.WhichErrs = we
}

func (r *implementsResult) toSerial(res *serial.Result, fset *token.FileSet) {
	res.Implements = &serial.Implements{
		T:                       makeImplementsType(r.t, fset),
		AssignableTo:            makeImplementsTypes(r.to, fset),
		AssignableFrom:          makeImplementsTypes(r.from, fset),
		AssignableFromPtr:       makeImplementsTypes(r.fromPtr, fset),
		AssignableToMethod:      methodsToSerial(r.qpos.info.Pkg, r.toMethod, fset),
		AssignableFromMethod:    methodsToSerial(r.qpos.info.Pkg, r.fromMethod, fset),
		AssignableFromPtrMethod: methodsToSerial(r.qpos.info.Pkg, r.fromPtrMethod, fset),
	}
	if r.method != nil {
		res.Implements.Method = &serial.DescribeMethod{
			Name: r.qpos.ObjectString(r.method),
			Pos:  fset.Position(r.method.Pos()).String(),
		}
	}
}

func (r *peersResult) toSerial(res *serial.Result, fset *token.FileSet) {
	peers := &serial.Peers{
		Pos:  fset.Position(r.queryPos).String(),
		Type: r.queryType.String(),
	}
	for _, alloc := range r.makes {
		peers.Allocs = append(peers.Allocs, fset.Position(alloc).String())
	}
	for _, send := range r.sends {
		peers.Sends = append(peers.Sends, fset.Position(send).String())
	}
	for _, receive := range r.receives {
		peers.Receives = append(peers.Receives, fset.Position(receive).String())
	}
	for _, clos := range r.closes {
		peers.Closes = append(peers.Closes, fset.Position(clos).String())
	}
	res.Peers = peers
}

func (r *pointstoResult) toSerial(res *serial.Result, fset *token.FileSet) {
	var pts []serial.PointsTo
	for _, ptr := range r.ptrs {
		var namePos string
		if nt, ok := deref(ptr.typ).(*types.Named); ok {
			namePos = fset.Position(nt.Obj().Pos()).String()
		}
		var labels []serial.PointsToLabel
		for _, l := range ptr.labels {
			labels = append(labels, serial.PointsToLabel{
				Pos:  fset.Position(l.Pos()).String(),
				Desc: l.String(),
			})
		}
		pts = append(pts, serial.PointsTo{
			Type:    r.qpos.TypeString(ptr.typ),
			NamePos: namePos,
			Labels:  labels,
		})
	}
	res.PointsTo = pts
}