// TODO: Change amount to a proper type with 4 values, etc. to avoid confusion with other funcs where amount can be an arbitrary number.
// TOOD: Rename to JumpTo or something to indicate it's a method that can never fail.
// Move jumps the caret position to a new position. This operation never fails, but may not have any effect.
// If amount is ±1, move by 1 character within same line if possible.
// If amount is ±2, jump to start/end of line.
// If amount is ±3, jump to start/end of content.
func (cp *caretPositionInternal) Move(amount int8) {
originalPosition := *cp
switch amount {
// Move by 1 character within same line, if possible.
case -1:
if cp.positionWithinLine > 0 {
cp.positionWithinLine--
}
case +1:
if cp.positionWithinLine < cp.w.Line(cp.lineIndex).Length() {
cp.positionWithinLine++
}
case -2:
cp.positionWithinLine = 0
case +2:
cp.positionWithinLine = cp.w.Line(cp.lineIndex).Length()
case -3:
cp.lineIndex = 0
cp.positionWithinLine = 0
case +3:
cp.lineIndex = cp.w.LenLines() - 1
cp.positionWithinLine = cp.w.Line(cp.lineIndex).Length()
}
if cp.Compare(&originalPosition) == 0 {
// There's no change, so don't do anything else
return
}
cp.targetExpandedX, _ = cp.expandedPosition() // TODO: More direct
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
}
func (cp *caretPositionInternal) MoveTo(other *caretPositionInternal) {
cp.lineIndex = other.lineIndex
cp.positionWithinLine = other.positionWithinLine
cp.targetExpandedX = other.targetExpandedX
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
}
// Moves caret horizontally by amount. It doesn't do bounds checking, so it's
// the caller's responsibility to ensure it's a legal amount to move by.
//
// Pre-conditions:
// - Moving caret by amount should result in a valid position.
func (cp *caretPositionInternal) willMoveH(amount int32) {
switch {
case amount < 0:
absAmount := uint32(-amount)
for absAmount != 0 {
if cp.positionWithinLine >= absAmount {
cp.positionWithinLine -= absAmount
absAmount = 0
} else { //if cp.lineIndex > 0
absAmount -= 1 + cp.positionWithinLine
cp.lineIndex--
cp.positionWithinLine = cp.w.Line(cp.lineIndex).Length()
}
}
case amount > 0:
absAmount := uint32(amount)
for absAmount != 0 {
if cp.positionWithinLine+absAmount <= cp.w.Line(cp.lineIndex).Length() {
cp.positionWithinLine += absAmount
absAmount = 0
} else { //if cp.lineIndex < some_max
absAmount -= 1 + cp.w.Line(cp.lineIndex).Length() - cp.positionWithinLine
cp.lineIndex++
cp.positionWithinLine = 0
}
}
default:
// There's no change, so don't do anything else
return
}
cp.targetExpandedX, _ = cp.expandedPosition() // TODO: More direct
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
}
// updateWorker is a sequential updater of Go packages. It does not update them in parallel
// to avoid race conditions or other problems, since `go get -u` does not seem to protect against that.
func updateWorker() {
for updateRequest := range updateRequestChan {
if !production {
fmt.Println("got req:", updateRequest.importPathPattern)
time.Sleep(time.Second)
fmt.Println("Done.")
updateRequest.resultChan <- nil
continue
}
var updateErr = fmt.Errorf("import path pattern %q not found in GOPATH", updateRequest.importPathPattern)
gist7802150.MakeUpdated(goPackages)
for _, goPackage := range goPackages.List() {
if rootPath := getRootPath(goPackage); rootPath != "" {
if gist7480523.GetRepoImportPathPattern(rootPath, goPackage.Bpkg.SrcRoot) == updateRequest.importPathPattern {
vcs := goPackage.Dir.Repo.RepoRoot.VCS
fmt.Printf("cd %s\n", rootPath)
fmt.Printf("%s %s", vcs.Cmd, vcs.DownloadCmd)
updateErr = vcs.Download(rootPath)
// Invalidate cache of the package's local revision, since it's expected to change after updating.
gist7802150.ExternallyUpdated(goPackage.Dir.Repo.VcsLocal.GetSources()[1].(gist7802150.DepNode2ManualI))
break
}
}
}
updateRequest.resultChan <- updateErr
fmt.Println("\nDone.")
}
}
func (u GopathUpdater) Update(importPathPattern string) error {
// TODO: This uses a legacy gist7802150 caching/cache-invalidation system. It's functional,
// but poorly documented, has known flaws (it does not allow concurrent updates),
// and very contributor-unfriendly (people don't like packages that have the word "gist" in
// the import path, even if's not actually a gist; which is understandable, since it's basically
// a package without a name that describes what it's for - that's something acceptable during
// rapid prototyping, but not for the finished product). Need to redesign it and replace with
// something better.
//
// First step might be to simply drop the caching behavior and hope the user doesn't try
// to manually refresh their browser page very often.
var updateErr = fmt.Errorf("import path pattern %q not found in GOPATH", importPathPattern)
gist7802150.MakeUpdated(u.GoPackages)
for _, goPackage := range u.GoPackages.List() {
if rootPath := util.GetRootPath(goPackage); rootPath != "" {
if gist7480523.GetRepoImportPathPattern(rootPath, goPackage.Bpkg.SrcRoot) == importPathPattern {
vcs := goPackage.Dir.Repo.RepoRoot.VCS
fmt.Printf("cd %s\n", rootPath)
fmt.Printf("%s %s", vcs.Cmd, vcs.DownloadCmd)
updateErr = vcs.Download(rootPath)
// Invalidate cache of the package's local revision, since it's expected to change after updating.
gist7802150.ExternallyUpdated(goPackage.Dir.Repo.VcsLocal.GetSources()[1].(gist7802150.DepNode2ManualI))
break
}
}
}
return updateErr
}
func (cp *caretPositionInternal) tryMoveV(direction direction, jumpWords bool) {
switch direction {
case Backward:
if cp.lineIndex > 0 {
if jumpWords {
for cp.lineIndex > 0 {
cp.lineIndex--
line := cp.w.Content()[cp.w.Line(cp.lineIndex).Start():cp.w.Line(cp.lineIndex).End()]
if line == "" {
break
}
}
cp.positionWithinLine = 0
} else {
cp.lineIndex--
line := cp.w.Content()[cp.w.Line(cp.lineIndex).Start():cp.w.Line(cp.lineIndex).End()]
cp.positionWithinLine = ExpandedToLogical(line, cp.targetExpandedX)
}
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
} else {
cp.Move(-2)
}
case Forward:
if cp.lineIndex < cp.w.LenLines()-1 {
if jumpWords {
for cp.lineIndex < cp.w.LenLines()-1 {
cp.lineIndex++
line := cp.w.Content()[cp.w.Line(cp.lineIndex).Start():cp.w.Line(cp.lineIndex).End()]
if line == "" {
break
}
}
cp.positionWithinLine = 0
} else {
cp.lineIndex++
line := cp.w.Content()[cp.w.Line(cp.lineIndex).Start():cp.w.Line(cp.lineIndex).End()]
cp.positionWithinLine = ExpandedToLogical(line, cp.targetExpandedX)
}
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
} else {
cp.Move(+2)
}
}
}
// TrySetPositionAtLineIndex places caret at beginning of lineIndex line. It accepts out of range line indicies.
func (cp *caretPositionInternal) TrySetPositionAtLineIndex(lineIndex int) {
if lineIndex < 0 {
lineIndex = 0
} else if lineIndex > cp.w.LenLines()-1 {
lineIndex = cp.w.LenLines() - 1
}
cp.lineIndex = lineIndex
cp.positionWithinLine = 0
cp.targetExpandedX = 0
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
}
func (cp *caretPositionInternal) TrySet(position uint32) {
if position > uint32(cp.w.LenContent()) {
position = uint32(cp.w.LenContent())
}
cp.lineIndex = sort.Search(cp.w.LenLines()-1, func(lineIndex int) bool {
return cp.w.Line(lineIndex+1).Start() > position
})
cp.positionWithinLine = position - cp.w.Line(cp.lineIndex).Start()
cp.targetExpandedX, _ = cp.expandedPosition() // TODO: More direct
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
}
func (cp *caretPositionInternal) SetPositionFromLogical(pos mgl64.Vec2) {
if pos[1] < 0 {
cp.lineIndex = 0
} else if pos[1] >= float64(cp.w.LenLines()) {
cp.lineIndex = cp.w.LenLines() - 1
} else {
cp.lineIndex = int(pos[1])
}
if pos[0] < 0 {
cp.targetExpandedX = 0
} else {
cp.targetExpandedX = uint32(pos[0] + 0.5)
}
line := cp.w.Content()[cp.w.Line(cp.lineIndex).Start():cp.w.Line(cp.lineIndex).End()]
cp.positionWithinLine = ExpandedToLogical(line, cp.targetExpandedX)
gist7802150.ExternallyUpdated(&cp.DepNode2Manual)
}
