public override VimPoint Move(Interfaces.IVimHost host)
{
if (host.IsCurrentPositionAtEndOfLine()) {
return host.CurrentPosition;
}
VimPoint bak = host.CurrentPosition;
for (int i = 0; i < this.Repeat; i++) {
do {
if (host.IsCurrentPositionAtEndOfLine()) {
host.MoveCursor(bak);
return host.CurrentPosition;
}
host.CaretRight();
char ch = host.GetCharAtCurrentPosition();
if (ch == _toSearch) {
break;
}
}
while (true);
}
return host.CurrentPosition;
}
public override VimPoint Move(Interfaces.IVimHost host)
{
if (host.IsCurrentPositionAtStartOfDocument()) {
return host.CurrentPosition;
}
VimPoint start_pos = host.CurrentPosition;
VimPoint pos = null;
for (int i = 0; i < this.Repeat; i++) {
if (!host.FindLeftBrace(start_pos, out pos)) {
return host.CurrentPosition;
}
start_pos = pos;
}
host.GotoLine(pos.X);
host.MoveCursor(pos);
return host.CurrentPosition;
}
public override bool Apply(Interfaces.IVimHost host)
{
// in yank, we need not to move cursor to new moved position
VimPoint bak = host.CurrentPosition;
VimPoint from = bak;
VimPoint to = null;
for (int i = 0; i < this.Repeat; i++) {
to = this.Motion.Move(host);
}
VimSpan span = null;
if (from.CompareTo(to) > 0) {
span = new VimSpan(to, from);
}
else {
span = new VimSpan(from, to);
if (this.Motion is Interfaces.IVimMotionNextWord) {
// "dw" on the last word of the line deletes to the end of the line
if (host.IsCurrentPositionAtStartOfLineText()) {
host.CaretUp();
host.MoveToEndOfLine();
span = new VimSpan(from, host.CurrentPosition);
}
}
else if (this.Motion is Interfaces.IVimMotionEndOfWord) {
span = span.GetClosedEnd();
}
else if (this.Motion is Interfaces.IVimMotionEndOfLine) {
// '$' in range edition is a close end span while range edition operates on open end spans,
// so a manual compensation is needed
span = span.GetClosedEnd();
}
else if (this.Motion is Interfaces.IVimMotionSearchCharInLine) {
span = span.GetClosedEnd();
}
}
if (this.Motion is Interfaces.IVimMotionSearchCharInLine) {
if (span.Start.CompareTo(span.End) == 0) {
// may be search successfully, but most of time, it reflects a failure, so do nothing for simplification
// TODO can find a better way to handle this class of motion failure?
return false;
}
}
host.MoveCursor(bak);
if (this.Motion is Interfaces.IVimMotionBetweenLines) {
from = new VimPoint(span.Start.X, 0);
to = host.GetLineEndPosition(span.End.X);
span = new VimSpan(from, to);
_register.Remember(host.GetText(span), true, host);
}
else {
_register.Remember(host.GetText(span), false, host);
}
return true;
}
