"go/token"
	"go/types"
	"os"
	"strconv"

	"golang.org/x/tools/go/analysis"
	"golang.org/x/tools/internal/aliases"
)

func TypeErrorEndPos(fset *token.FileSet, src []byte, start token.Pos) token.Pos {
	// Get the end position for the type error.
	offset, end := fset.PositionFor(start, false).Offset, start
	if offset >= len(src) {
		return end
	}
	if width := bytes.IndexAny(src[offset:], " \n,():;[]+-*"); width > 0 {

// which should be a constant, may be used to classify them.
// It is primarily intended to make it easy to look up documentation.
//
// All Pos values are interpreted relative to Pass.Fset. If End is
// provided, the diagnostic is specified to apply to the range between
// Pos and End.
type Diagnostic struct {
	Pos      token.Pos
	End      token.Pos // optional
	Category string    // optional

		// name (name with subscript).
		tparamIndex: make(map[ident]*types.TypeParam),

		fake: fakeFileSet{
			fset:  fset,
			files: make(map[string]*fileInfo),
		},
	}
	defer p.fake.setLines() // set lines for files in fset

	for i, pt := range predeclared {
		p.typCache[uint64(i)] = pt
	}
	// Special handling for "any", whose representation may be changed by the

	errpos        positioner             // if set, identifier position of a constant with inherited initializer
	inTParamList  bool                   // set if inside a type parameter list
	sig           *Signature             // function signature if inside a function; nil otherwise
	isPanic       map[*ast.CallExpr]bool // set of panic call expressions (used for termination check)

// just as export data enables separate compilation of several passes,
// facts enable "separate analysis".
//
// Each pass (a, p) starts with the set of facts produced by the
// same analyzer a applied to the packages directly imported by p.
// The analysis may add facts to the set, and they may be exported in turn.
// An analysis's Run function may retrieve facts by calling
// Pass.Import{Object,Package}Fact and update them using

}

// readUnifiedPackage reads a package description from the given
// unified IR export data decoder.
func readUnifiedPackage(fset *token.FileSet, ctxt *types.Context, imports map[string]*types.Package, input pkgbits.PkgDecoder) *types.Package {
	pr := pkgReader{
		PkgDecoder: input,

		fake: fakeFileSet{
			fset:  fset,
			files: make(map[string]*fileInfo),
		},

		ctxt:    ctxt,
		imports: imports,

						obj = scope.Lookup(ident.Name)
					}
				}
				// If Config.go115UsesCgo is set, the typechecker will resolve Cgo
				// selectors to their cgo name. We must do the same here.
				if pname, _ := obj.(*PkgName); pname != nil {
					if pname.imported.cgo { // only set if Config.go115UsesCgo is set
						name = "_Ctype_" + typ.Sel.Name
					}
				}
			}
			if name == "" {
				return false, nil

			continue
		}
		if !strings.HasSuffix(name, ".go") || strings.HasSuffix(name, "_test.go") {
			continue
		}
		info := fileInfo{
			name: filepath.Join(dir, name),
			fset: fset,
		}
		f, err := os.Open(info.name)
		if err != nil {
			return nil, err
		}
		err = readGoInfo(f, &info)
		f.Close()
		if err != nil {
			return nil, fmt.Errorf("reading %v: %v", name, err)
		}

		if t := s.lstmt; t != nil && t.Label.Name == name {
			return t
		}
	}
	return nil
}

// blockBranches processes a block's statement list and returns the set of outgoing forward jumps.
// all is the scope of all declared labels, parent the set of labels declared in the immediately
// enclosing block, and lstmt is the labeled statement this block is associated with (or nil).

	dstDir = "/src/go/types/"
)

// TestGenerate verifies that generated files in go/types match their types2
// counterpart. If -write is set, this test actually writes the expected
// content to go/types; otherwise, it just compares with the existing content.
func TestGenerate(t *testing.T) {
	// If filesToWrite is set, write the generated content to disk.
	// In the special case of "all", write all files in filemap.
	write := *filesToWrite != ""