const PackageVersion = "8"

type Annotation struct {
	Pos, End  int32
	Kind      AnnotationKind
	PathIndex int16
}

type AnnotationKind int16

const (
	// Link to export in package specified by Paths[PathIndex] with fragment
	// Text[strings.LastIndex(Text[Pos:End], ".")+1:End].
	LinkAnnotation AnnotationKind = iota

	// Anchor with name specified by Text[Pos:End] or typeName + "." +
	// Text[Pos:End] for type declarations.
	AnchorAnnotation

	// Comment.
	CommentAnnotation

	// Link to package specified by Paths[PathIndex].
	PackageLinkAnnotation

	// Link to builtin entity with name Text[Pos:End].
	BuiltinAnnotation
)

type Code struct {
	Text        string
	Annotations []Annotation
	Paths       []string
}

type Example struct {
	Name   string
	Doc    string
	Code   Code
	Play   string
	Output string
}

type File struct {
	Name string
	URL  string
}

type Func struct {
	Decl     Code
	Pos      Pos
	Doc      string
	Name     string
	Recv     string // Actual receiver "T" or "*T".
	Orig     string // Original receiver "T" or "*T". This can be different from Recv due to embedding.
	Examples []*Example
}

type Note struct {
	Pos  Pos
	UID  string
	Body string
}

type Package struct {
	// The import path for this package.
	ImportPath string

	// Import path prefix for all packages in the project.
	ProjectRoot string

	// Name of the project.
	ProjectName string

	// Project home page.
	ProjectURL string

	// Errors found when fetching or parsing this package.
	Errors []string

	// Packages referenced in README files.
	References []string

	// Version control system: git, hg, bzr, ...
	VCS string

	// Version control: active or suppressed.
	Status gosrc.DirectoryStatus

	// Whether the package is a fork of another one.
	Fork bool

	// How many stars (for a GitHub project) or followers (for a BitBucket
	// project) the repository of this package has.
	Stars int

	// The time this object was created.
	Updated time.Time

	// Cache validation tag. This tag is not necessarily an HTTP entity tag.
	// The tag is "" if there is no meaningful cache validation for the VCS.
	Etag string

	// Subdirectories, possibly containing Go code.
	Subdirectories []string

	// Package name or "" if no package for this import path. The proceeding
	// fields are set even if a package is not found for the import path.
	Name string

	// Synopsis and full documentation for the package.
	Synopsis string
	Doc      string

	// Format this package as a command.
	IsCmd bool

	// True if package documentation is incomplete.
	Truncated bool

	// Environment
	GOOS, GOARCH string

	// Top-level declarations.
	Consts []*Value
	Funcs  []*Func
	Types  []*Type
	Vars   []*Value

	// Package examples
	Examples []*Example

	Notes map[string][]*Note

	// Source.
	LineFmt   string
	BrowseURL string
	Files     []*File
	TestFiles []*File

	// Source size in bytes.
	SourceSize     int
	TestSourceSize int

	// Imports
	Imports      []string
	TestImports  []string
	XTestImports []string
}

type Pos struct {
	Line int32  // 0 if not valid.
	N    uint16 // number of lines - 1
	File int16  // index in Package.Files
}

type Type struct {
	Doc      string
	Name     string
	Decl     Code
	Pos      Pos
	Consts   []*Value
	Vars     []*Value
	Funcs    []*Func
	Methods  []*Func
	Examples []*Example
}

type Value struct {
	Decl Code
	Pos  Pos
	Doc  string
}