}
	return expr.Indices[0]
}

// index checks an index expression for validity.
// If max >= 0, it is the upper bound for index.
// If the result typ is != Typ[Invalid], index is valid and typ is its (possibly named) integer type.
// If the result val >= 0, index is valid and val is its constant int value.
func (check *Checker) index(index ast.Expr, max int64) (typ Type, val int64) {

}

// singleIndex returns the (single) index from the index expression e.
// If the index is missing, or if there are multiple indices, an error
// is reported and the result is nil.
func (check *Checker) singleIndex(e *syntax.IndexExpr) syntax.Expr {
	index := e.Index
	if index == nil {
		check.errorf(e, InvalidSyntaxTree, "missing index for %s", e.X)
		return nil
	}
	if l, _ := index.(*syntax.ListExpr); l != nil {

	_ = a[- /* ERROR "negative" */ 1]
	_ = a[- /* ERROR "negative" */ 1 :]
	_ = a[: - /* ERROR "negative" */ 1]
	_ = a[: /* ERROR "middle index required" */ : /* ERROR "final index required" */ ]
	_ = a[0: /* ERROR "middle index required" */ : /* ERROR "final index required" */ ]
	_ = a[0: /* ERROR "middle index required" */ :10]
	_ = a[:10:10]

	var a0 int
	a0 = a[0]
	_ = a0
	var a1 int32

				return err
			}
			iNdEx = postIndex
		default:
			iNdEx = preIndex
			skippy, err := skipGenerated(dAtA[iNdEx:])
			if err != nil {
				return err
			}
			if (skippy < 0) || (iNdEx+skippy) < 0 {
				return ErrInvalidLengthGenerated
			}
			if (iNdEx + skippy) > l {
				return io.ErrUnexpectedEOF
			}
			iNdEx += skippy
		}
	}

	if iNdEx > l {
		return io.ErrUnexpectedEOF

				return err
			}
			iNdEx = postIndex
		default:
			iNdEx = preIndex
			skippy, err := skipGenerated(dAtA[iNdEx:])
			if err != nil {
				return err
			}
			if (skippy < 0) || (iNdEx+skippy) < 0 {
				return ErrInvalidLengthGenerated
			}
			if (iNdEx + skippy) > l {
				return io.ErrUnexpectedEOF
			}
			iNdEx += skippy
		}
	}

	if iNdEx > l {
		return io.ErrUnexpectedEOF

			if (skippy < 0) || (iNdEx+skippy) < 0 {
				return ErrInvalidLengthGenerated
			}
			if (iNdEx + skippy) > l {
				return io.ErrUnexpectedEOF
			}
			iNdEx += skippy
		}
	}

	if iNdEx > l {
		return io.ErrUnexpectedEOF
	}
	return nil
}
func (m *IPAddressList) Unmarshal(dAtA []byte) error {
	l := len(dAtA)
	iNdEx := 0
	for iNdEx < l {
		preIndex := iNdEx
		var wire uint64

}
func (m *RawExtension) Unmarshal(dAtA []byte) error {
	l := len(dAtA)
	iNdEx := 0
	for iNdEx < l {
		preIndex := iNdEx
		var wire uint64
		for shift := uint(0); ; shift += 7 {
			if shift >= 64 {
				return ErrIntOverflowGenerated
			}
			if iNdEx >= l {
				return io.ErrUnexpectedEOF
			}
			b := dAtA[iNdEx]
			iNdEx++
			wire |= uint64(b&0x7F) << shift
			if b < 0x80 {
				break
			}

			m.Error = string(dAtA[iNdEx:postIndex])
			iNdEx = postIndex
		default:
			iNdEx = preIndex
			skippy, err := skipApi(dAtA[iNdEx:])
			if err != nil {
				return err
			}
			if (skippy < 0) || (iNdEx+skippy) < 0 {
				return ErrInvalidLengthApi
			}
			if (iNdEx + skippy) > l {
				return io.ErrUnexpectedEOF
			}
			iNdEx += skippy
		}
	}

	if iNdEx > l {
		return io.ErrUnexpectedEOF
	}

	cases := map[string]struct {
		intervals orderedIntervals
		index     int
		wantHas   bool
	}{
		"empty": {
			index: 4,
		},
		"before all": {
			index:     1,
			intervals: []interval{{2, 4}, {5, 7}},
		},
		"after all": {
			index:     9,
			intervals: []interval{{2, 4}, {6, 8}},
		},
		"in between": {
			index:     5,
			intervals: []interval{{2, 4}, {6, 8}},
		},

					if index < d.maxInsertIndex {
						hash := hash4(d.window[index : index+minMatchLength])
						// Get previous value with the same hash.
						// Our chain should point to the previous value.
						hh := &d.hashHead[hash&hashMask]
						d.hashPrev[index&windowMask] = *hh
						// Set the head of the hash chain to us.
						*hh = uint32(index + d.hashOffset)
					}
				}
				d.index = index