serial

type CallStack struct {
	Pos     string   `json:"pos"`     // location of the selected function
	Target  string   `json:"target"`  // the selected function
	Callers []Caller `json:"callers"` // enclosing calls, innermost first.
}

type Callee struct {
	Name string `json:"name"` // full name of called function
	Pos  string `json:"pos"`  // location of called function
}

type Callees struct {
	Pos     string    `json:"pos"`  // location of selected call site
	Desc    string    `json:"desc"` // description of call site
	Callees []*Callee `json:"callees"`
}

type Caller struct {
	Pos    string `json:"pos,omitempty"` // location of the calling function
	Desc   string `json:"desc"`          // description of call site
	Caller string `json:"caller"`        // full name of calling function
}

type Definition struct {
	ObjPos string `json:"objpos,omitempty"` // location of the definition
	Desc   string `json:"desc"`             // description of the denoted object
}

type Describe struct {
	Desc   string `json:"desc"`             // description of the selected syntax node
	Pos    string `json:"pos"`              // location of the selected syntax node
	Detail string `json:"detail,omitempty"` // one of {package, type, value}, or "".

	// At most one of the following fields is populated:
	// the one specified by 'detail'.
	Package *DescribePackage `json:"package,omitempty"`
	Type    *DescribeType    `json:"type,omitempty"`
	Value   *DescribeValue   `json:"value,omitempty"`
}

type DescribeMember struct {
	Name    string           `json:"name"`              // name of member
	Type    string           `json:"type,omitempty"`    // type of member (underlying, if 'type')
	Value   string           `json:"value,omitempty"`   // value of member (if 'const')
	Pos     string           `json:"pos"`               // location of definition of member
	Kind    string           `json:"kind"`              // one of {var,const,func,type}
	Methods []DescribeMethod `json:"methods,omitempty"` // methods (if member is a type)
}

type DescribeMethod struct {
	Name string `json:"name"` // method name, as defined by types.Selection.String()
	Pos  string `json:"pos"`  // location of the method's definition
}

type DescribePackage struct {
	Path    string            `json:"path"`              // import path of the package
	Members []*DescribeMember `json:"members,omitempty"` // accessible members of the package
}

type DescribeType struct {
	Type    string           `json:"type"`              // the string form of the type
	NamePos string           `json:"namepos,omitempty"` // location of definition of type, if named
	NameDef string           `json:"namedef,omitempty"` // underlying definition of type, if named
	Methods []DescribeMethod `json:"methods,omitempty"` // methods of the type
}

type DescribeValue struct {
	Type     string       `json:"type"`               // type of the expression
	Value    string       `json:"value,omitempty"`    // value of the expression, if constant
	ObjPos   string       `json:"objpos,omitempty"`   // location of the definition, if an Ident
	TypesPos []Definition `json:"typespos,omitempty"` // location of the named types, that type consist of
}

type FreeVar struct {
	Pos  string `json:"pos"`  // location of the identifier's definition
	Kind string `json:"kind"` // one of {var,func,type,const,label}
	Ref  string `json:"ref"`  // referring expression (e.g. "x" or "x.y.z")
	Type string `json:"type"` // type of the expression
}

type Implements struct {
	T                 ImplementsType   `json:"type,omitempty"`    // the queried type
	AssignableTo      []ImplementsType `json:"to,omitempty"`      // types assignable to T
	AssignableFrom    []ImplementsType `json:"from,omitempty"`    // interface types assignable from T
	AssignableFromPtr []ImplementsType `json:"fromptr,omitempty"` // interface types assignable only from *T

	// The following fields are set only if the query was a method.
	// Assignable{To,From,FromPtr}Method[i] is the corresponding
	// method of type Assignable{To,From,FromPtr}[i], or blank
	// {"",""} if that type lacks the method.
	Method                  *DescribeMethod  `json:"method,omitempty"` //  the queried method
	AssignableToMethod      []DescribeMethod `json:"to_method,omitempty"`
	AssignableFromMethod    []DescribeMethod `json:"from_method,omitempty"`
	AssignableFromPtrMethod []DescribeMethod `json:"fromptr_method,omitempty"`
}

type ImplementsType struct {
	Name string `json:"name"` // full name of the type
	Pos  string `json:"pos"`  // location of its definition
	Kind string `json:"kind"` // "basic", "array", etc
}

type Peers struct {
	Pos      string   `json:"pos"`                // location of the selected channel op (<-)
	Type     string   `json:"type"`               // type of the selected channel
	Allocs   []string `json:"allocs,omitempty"`   // locations of aliased make(chan) ops
	Sends    []string `json:"sends,omitempty"`    // locations of aliased ch<-x ops
	Receives []string `json:"receives,omitempty"` // locations of aliased <-ch ops
	Closes   []string `json:"closes,omitempty"`   // locations of aliased close(ch) ops
}

type PointsTo struct {
	Type    string          `json:"type"`              // (concrete) type of the pointer
	NamePos string          `json:"namepos,omitempty"` // location of type defn, if Named
	Labels  []PointsToLabel `json:"labels,omitempty"`  // pointed-to objects
}

type PointsToLabel struct {
	Pos  string `json:"pos"`  // location of syntax that allocated the object
	Desc string `json:"desc"` // description of the label
}

type Ref struct {
	Pos  string `json:"pos"`  // location of all references
	Text string `json:"text"` // text of the referring line
}

type ReferrersInitial struct {
	ObjPos string `json:"objpos,omitempty"` // location of the definition
	Desc   string `json:"desc"`             // description of the denoted object
}

type ReferrersPackage struct {
	Package string `json:"package"`
	Refs    []Ref  `json:"refs"` // non-empty list of references within this package
}

type SyntaxNode struct {
	Description string `json:"desc"`  // description of syntax tree
	Start       int    `json:"start"` // start byte offset, 0-based
	End         int    `json:"end"`   // end byte offset
}

type What struct {
	Enclosing  []SyntaxNode `json:"enclosing"`            // enclosing nodes of syntax tree
	Modes      []string     `json:"modes"`                // query modes enabled for this selection.
	SrcDir     string       `json:"srcdir,omitempty"`     // $GOROOT src directory containing queried package
	ImportPath string       `json:"importpath,omitempty"` // import path of queried package
	Object     string       `json:"object,omitempty"`     // name of identified object, if any
	SameIDs    []string     `json:"sameids,omitempty"`    // locations of references to same object
}

type WhichErrs struct {
	ErrPos    string          `json:"errpos,omitempty"`    // location of queried error
	Globals   []string        `json:"globals,omitempty"`   // locations of globals
	Constants []string        `json:"constants,omitempty"` // locations of constants
	Types     []WhichErrsType `json:"types,omitempty"`     // Types
}

type WhichErrsType struct {
	Type     string `json:"type,omitempty"`
	Position string `json:"position,omitempty"`
}