private bool isNextEnd(int index)
{
int prevInex = index;
if (prevInex < CodeDocument.Length &&
(
CodeDocument.GetCharAt(prevInex) == ' ' || CodeDocument.GetCharAt(prevInex) == '\t'
)
)
{
prevInex++;
}
if (prevInex >= CodeDocument.Length || CodeDocument.GetCharAt(prevInex) != 'e')
{
return(false);
}
prevInex++;
if (prevInex >= CodeDocument.Length || CodeDocument.GetCharAt(prevInex) != 'n')
{
return(false);
}
prevInex++;
if (CodeDocument.GetCharAt(prevInex) != 'd')
{
return(false);
}
return(true);
}
private bool isPrevBegin(int index)
{
int prevInex = index;
if (prevInex > 0)
{
prevInex--;
}
if (prevInex > 0 && CodeDocument.GetCharAt(prevInex) == '\n')
{
prevInex--;
}
if (prevInex > 0 && CodeDocument.GetCharAt(prevInex) == '\r')
{
prevInex--;
}
if (prevInex == 0 || CodeDocument.GetCharAt(prevInex) != 'n')
{
return(false);
}
prevInex--;
if (prevInex == 0 || CodeDocument.GetCharAt(prevInex) != 'i')
{
return(false);
}
prevInex--;
if (prevInex == 0 || CodeDocument.GetCharAt(prevInex) != 'g')
{
return(false);
}
prevInex--;
if (prevInex == 0 || CodeDocument.GetCharAt(prevInex) != 'e')
{
return(false);
}
prevInex--;
if (CodeDocument.GetCharAt(prevInex) != 'b')
{
return(false);
}
return(true);
}
private void applyAutoInput()
{
int index = CodeDocument.CaretIndex;
int line = CodeDocument.GetLineAt(index);
if (line == 0)
{
return;
}
int prevLine = line - 1;
int lineHeadIndex = CodeDocument.GetLineStartIndex(line);
int prevLineHeadIndex = CodeDocument.GetLineStartIndex(prevLine);
int prevTabs = 0;
for (int i = prevLineHeadIndex; i < lineHeadIndex; i++)
{
char ch = CodeDocument.GetCharAt(i);
if (ch == '\t')
{
prevTabs++;
}
else
{
break;
}
}
int indentLength = 0;
for (int i = lineHeadIndex; i < CodeDocument.Length; i++)
{
char ch = CodeDocument.GetCharAt(i);
if (ch == '\t')
{
indentLength++;
}
else if (ch == ' ')
{
indentLength++;
}
else
{
break;
}
}
bool prevBegin = isPrevBegin(lineHeadIndex);
bool nextEnd = isNextEnd(lineHeadIndex);
if (prevBegin)
{
if (nextEnd) // caret is sandwiched beteen begin and end
{
// BEFORE
// begin[enter] end
// AFTER
// begin
// [caret]
// end
CodeDocument.Replace(lineHeadIndex, indentLength, 0, new String('\t', prevTabs + 1) + "\r\n" + new String('\t', prevTabs));
CodeDocument.CaretIndex = CodeDocument.CaretIndex + prevTabs + 1 + 1 - indentLength;
return;
}
else
{ // add indent
prevTabs++;
}
}
CodeDocument.Replace(lineHeadIndex, indentLength, 0, new String('\t', prevTabs));
CodeDocument.CaretIndex = CodeDocument.CaretIndex + prevTabs - indentLength;
}