gotype

type ChanDir int

type Importer struct {
	// contains filtered or unexported fields
}

type Kind uint8

type Option func(i *Importer)

type Type interface {

	// String returns a string representation of the type.
	// The string representation may use shortened package names
	// (e.g., base64 instead of "encoding/base64") and is not
	// guaranteed to be unique among types. To test for type identity,
	// compare the Types directly.
	String() string

	// PkgPath returns a named type's package path, that is, the import path
	// that uniquely identifies the package, such as "encoding/base64".
	// If the type was predeclared (string, error) or unnamed (*T, struct{}, []int),
	// the package path will be the empty string.
	PkgPath() string

	// IsGoroot returns package is found in Go root
	IsGoroot() bool

	// Name returns the type's name within its package.
	// It returns an empty string for unnamed types.
	Name() string

	// Kind returns the specific kind of this type.
	Kind() Kind

	// Key returns a map type's key type.
	// It panics if the type's Kind is not Map.
	Key() Type

	// Elem returns a type's element type.
	// It panics if the type's Kind is not Array, Chan, Map, Ptr, or Slice.
	Elem() Type

	// Declaration returns a type's declaration.
	// It panics if the type's Kind is not declaration.
	Declaration() Type

	// Tag returns a field type's tag.
	// It panics if the type's Kind is not Field.
	Tag() reflect.StructTag

	// Len returns an array type's length.
	// It panics if the type's Kind is not Array.
	Len() int

	// Value returns a type's value.
	// Only get constants
	Value() string

	// ChanDir returns a channel type's direction.
	// It panics if the type's Kind is not Chan.
	ChanDir() ChanDir

	// Out returns the type of a function type's i'th output parameter.
	// It panics if the type's Kind is not Func.
	// It panics if i is not in the range [0, NumOut()).
	Out(int) Type

	// NumOut returns a function type's output parameter count.
	// It panics if the type's Kind is not Func.
	NumOut() int

	// In returns the type of a function type's i'th input parameter.
	// It panics if the type's Kind is not Func.
	// It panics if i is not in the range [0, NumIn()).
	In(int) Type

	// NumIn returns a function type's input parameter count.
	// It panics if the type's Kind is not Func.
	NumIn() int

	// IsVariadic reports whether a function type's final input parameter
	// is a "..." parameter. If so, t.In(t.NumIn() - 1) returns the parameter's
	// implicit actual type []T.
	//
	// For concreteness, if t represents func(x int, y ... float64), then
	//
	//	t.NumIn() == 2
	//	t.In(0) is the reflect.Type for "int"
	//	t.In(1) is the reflect.Type for "[]float64"
	//	t.IsVariadic() == true
	//
	// IsVariadic panics if the type's Kind is not Func.
	IsVariadic() bool

	// Field returns a struct type's i'th field.
	// It panics if the type's Kind is not Struct.
	// It panics if i is not in the range [0, NumField()).
	Field(int) Type

	// FieldByName returns the struct field with the given name
	// and a boolean indicating if the field was found.
	FieldByName(string) (Type, bool)

	// NumField returns a struct type's field count.
	// It panics if the type's Kind is not Struct.
	NumField() int

	// IsAnonymous returns is an embedded field
	// It panics if the type's Kind is not Field.
	IsAnonymous() bool

	// Method returns the i'th method in the type's method set.
	// Not contain anonymo
	// It panics if i is not in the range [0, NumMethod()).
	//
	// For a non-interface type T or *T, the returned Method's Type and Func
	// fields describe a function whose first argument is the receiver.
	//
	// For an interface type, the returned Method's Type field gives the
	// method signature, without a receiver, and the Func field is nil.
	Method(int) Type

	// MethodByName returns the method with that name in the type's
	// method set and a boolean indicating if the method was found.
	//
	// For a non-interface type T or *T, the returned Method's Type and Func
	// fields describe a function whose first argument is the receiver.
	//
	// For an interface type, the returned Method's Type field gives the
	// method signature, without a receiver, and the Func field is nil.
	MethodByName(string) (Type, bool)

	// NumMethod returns the number of exported methods in the type's method set.
	// Not contain anonymo
	NumMethod() int

	// Child returns a scope type's i'th child.
	// It panics if i is not in the range [0, NumChild()).
	Child(int) Type

	// ChildByName returns the scope with the given name
	// and a boolean indicating if the child was found.
	ChildByName(string) (Type, bool)

	// NumChild returns a scope type's child count.
	NumChild() int

	// Origin returns the type's origin data within its package.
	Origin() ast.Node

	// Doc returns the type's doc within its package.
	Doc() *ast.CommentGroup

	// Comment returns the type's comment within its package.
	Comment() *ast.CommentGroup
}