/// <summary>
/// Indent according to bracket hierarchy
/// </summary>
/// <param name="textDocument">The text document to cleanup.</param>
internal void InsertIndent(TextDocument textDocument)
{
TextPoint cursor = textDocument.StartPoint.CreateEditPoint();
IndentSquareBracket bracket = new IndentSquareBracket(cursor.Parent.StartPoint, cursor.Parent.EndPoint, null);
bracket.FindBracket();
bracket.Execute();
}
public void FindBracket()
{
EditPoint EndPoint = null;
TextRanges dummy = null;
EditPoint StartPoint = Start.CreateEditPoint();
StartPoint.LineDown();
//FindPattern 不能指定结束位置
while (StartPoint.FindPattern(MaximumBracketPattern, StandardFindOptions, ref EndPoint, ref dummy))
{
//所以，需要 判读匹配的开始位置是否在，被包含的区间外
if (StartPoint.Line >= End.Line)
{
break;//在外面，则跳出，转入数组的下一个
}
if (StartPoint != null && EndPoint != null)
{
IndentSquareBracket Child = new IndentSquareBracket(StartPoint, EndPoint, this);
StartPoint.StartOfLine();
int LineIndentCount;
//当父节区间为空时，取父区间的缩进，否则在父区间的基础上+1，逐级实现缩进
if (Parent == null)
{
string LineText = StartPoint.GetText(StartPoint.LineLength);
string textTemp = LineText.TrimStart('\t');
LineIndentCount = LineText.Length - textTemp.Length;//获取当前的缩进深度
}
else
{
LineIndentCount = IndentCount + 1;
}
Child.IndentCount = LineIndentCount;
Children.Add(Child);
//子Bracket递归查找
Child.FindBracket();
}
//再从区间的结束位置向后在下一个最大的包含区间
StartPoint = EndPoint;
}
}
/// <summary>
/// 处理缩进
/// </summary>
/// <param name="Bracket">一对方括号内容</param>
/// <param name="CurrentEditLintPoint">当前行的编辑点</param>
private static void HandleIndent(IndentSquareBracket Bracket, EditPoint CurrentEditLintPoint)
{
//把处理点移动到一行的开始位置
CurrentEditLintPoint.StartOfLine();
//是不是最后的右中括号 ]
bool IsEndRightBracket = CurrentEditLintPoint.Line == Bracket.End.Line;
string LineText = CurrentEditLintPoint.GetText(CurrentEditLintPoint.LineLength);
//整行从开头就被注释，则退出
if (LineText.StartsWith("//"))
{
return;
}
//如果这行是以#开头，则退出，针对#if之类的
if (LineText.StartsWith("#"))
{
return;
}
//剔除这行最前面的制表符
string CurrentLineText = LineText.TrimStart('\t');
//未处理该行的缩进个数
int OldIndentCount = LineText.Length - CurrentLineText.Length;
//中括号之间的内容，应该缩进的个数
int ContentIndentCount = Bracket.IndentCount + (IsEndRightBracket ? 0 : 1);
//待处理缩进个数
int IndentCountAbs = Math.Abs(OldIndentCount - ContentIndentCount);
//如果小于应该缩进的个数，则添加
if (OldIndentCount < ContentIndentCount)
{
CurrentEditLintPoint.Indent(null, IndentCountAbs);
}
//否则取消相应个数
else if (OldIndentCount > ContentIndentCount)
{
CurrentEditLintPoint.Unindent(null, IndentCountAbs);
}
}
public IndentSquareBracket(TextPoint start, TextPoint end, IndentSquareBracket parent)
{
Start = start.CreateEditPoint();//需要创建一个新的，相当于复制，不然后面操作，会影响到其他的
End = end.CreateEditPoint();
Parent = parent;
}