kubernetes/vendor/github.com/gogo/protobuf/protoc-gen-gogo/generator/internal/remap/remap.go

type Location …

type Map …

// Find reports whether the specified span is recorded by m, and if so returns
// the new location it was mapped to. If the input span was not found, the
// returned location is the same as the input.
func (m Map) Find(pos, end int) (Location, bool) { … }

func (m Map) add(opos, oend, npos, nend int) { … }

// Compute constructs a location mapping from input to output.  An error is
// reported if any of the tokens of output cannot be mapped.
func Compute(input, output []byte) (Map, error) { … }

type tokinfo …

func tokenize(src []byte) []tokinfo { … }