guru

type Query struct {
	Pos   string         // query position
	Build *build.Context // package loading configuration

	// pointer analysis options
	Scope      []string  // main packages in (*loader.Config).FromArgs syntax
	PTALog     io.Writer // (optional) pointer-analysis log file
	Reflection bool      // model reflection soundly (currently slow).

	// result-printing function
	Output func(*token.FileSet, QueryResult)
}

type QueryResult interface {
	// JSON returns the QueryResult in JSON form.
	JSON(fset *token.FileSet) []byte

	// PrintPlain prints the QueryResult in plain text form.
	// The implementation calls printfFunc to print each line of output.
	PrintPlain(printf printfFunc)
}