public void Step(IDocumentAccessor document, IndentationSettings settings)
{
var line = document.Text;
if (settings.LeaveEmptyLines && line.Length == 0)
{
return;
}
line = line.TrimStart();
var indent = new StringBuilder();
if (line.Length == 0)
{
if (this._blockComment)
{
return;
}
indent.Append(this._block.InnerIndent);
indent.Append(settings.IndentString.Repeat(this._block.OneLineBlock));
if (this._block.Continuation)
{
indent.Append(settings.IndentString);
}
if (document.Text != indent.ToString())
{
document.Text = indent.ToString();
}
return;
}
if (document.TrimEnd())
{
line = document.Text.TrimStart();
}
var oldBlock = this._block;
var startInComment = this._blockComment;
this._lineComment = false;
this._escape = false;
this._lastNonCommentChar = '\n';
var reader = new CharReader(line);
var cha = ' ';
var prev = '\0';
var next = '\n';
var indented = false;
while (reader.IsRemainChar)
{
cha = reader.Get();
prev = reader.Backward;
next = reader.Ahead;
if (this._lineComment)
{
break;
}
if (this._escape)
{
this._escape = false;
continue;
}
switch (cha)
{
case '/':
if (this._blockComment && prev == '*')
{
this._blockComment = false;
}
if (!this._inString)
{
if (!this._blockComment && next == '/')
{
this._lineComment = true;
}
if (!this._lineComment && next == '*')
{
this._blockComment = true;
}
}
break;
case '"':
if (!(this._lineComment || this._blockComment))
{
if (this._inString)
{
this._inString = !this._escape;
}
}
break;
case '\\':
if (this._inString)
{
this._escape = true;
}
break;
default:
break;
}
if (this._lineComment || this._blockComment || this._inString)
{
if (this._wordBuilder.Length > 0)
{
this._block.LastLiteral = this._wordBuilder.ToString();
}
this._wordBuilder.Length = 0;
continue;
}
if (char.IsLetterOrDigit(cha))
{
this._wordBuilder.Append(cha);
}
else
{
if (this._wordBuilder.Length > 0)
{
this._block.LastLiteral = this._wordBuilder.ToString();
}
this._wordBuilder.Length = 0;
}
switch (cha)
{
case '(':
case '{':
case '[':
this._block.ResetOneLineBlock();
this._blocks.Push(this._block);
this._block.StartLine = document.LineNumber;
if (!indented)
{
this._block.Indent(settings);
indented = true;
}
this._block.Bracket = cha;
break;
case ')':
case '}':
case ']':
var openBracket = StringChecker.GetOpenBracket(cha);
while (this._block.Bracket != openBracket)
{
if (this._blocks.Count == 0)
{
break;
}
this._block = this._blocks.Pop();
}
if (this._blocks.Count == 0)
{
break;
}
this._block = this._blocks.Pop();
this._block.Continuation = false;
this._block.ResetOneLineBlock();
break;
}
if (!char.IsWhiteSpace(cha))
{
this._lastNonCommentChar = cha;
}
}
if (this._wordBuilder.Length > 0)
{
this._block.LastLiteral = this._wordBuilder.ToString();
}
this._wordBuilder.Length = 0;
if ((startInComment && line[0] != '*') ||
document.Text.StartsWith("//\t", StringComparison.Ordinal) ||
(document.Text == "//"))
{
return;
}
if ("]})".Contains(line[0]))
{
indent.Append(oldBlock.OuterIndent);
oldBlock.ResetOneLineBlock();
oldBlock.Continuation = false;
}
else
{
indent.Append(oldBlock.InnerIndent);
}
if (document.IsReadOnly)
{
if (!oldBlock.Continuation && oldBlock.OneLineBlock == 0 &&
oldBlock.StartLine == this._block.StartLine &&
this._block.StartLine < document.LineNumber && this._lastNonCommentChar != ':')
{
indent.Length = 0;
line = document.Text;
for (int i = 0; i < line.Length; ++i)
{
if (!char.IsWhiteSpace(line[i]))
{
break;
}
indent.Append(line[i]);
}
if (startInComment && indent.Length > 0 && indent[indent.Length - 1] == ' ')
{
indent.Length -= 1;
}
this._block.InnerIndent = indent.ToString();
}
return;
}
if (startInComment)
{
indent.Append(' ');
}
if (indent.Length != (document.Text.Length - line.Length) ||
!document.Text.StartsWith(indent.ToString(), StringComparison.Ordinal) ||
char.IsWhiteSpace(document.Text[indent.Length]))
{
document.Text = indent.ToString() + line;
}
}
