internal TextLabel ReadTextNodeUsingFormatLine(string text, ThunderWriter writer, SequenceStringReader readerHelper, string parameterPrefix)
{
var i = -1;
var length = text.Length;
var label = new TextLabel()
{
};
var hack = 0;
var cuted = false;
char last = 'a';
while (true)
{
i++;
if (i >= length)
{
break;
}
if (readerHelper.IsWhiteSpaceChangeLine(text[i]))
{
hack++;
continue;
}
i--;
break;
}
while (true)
{
i++;
if (i >= length)
{
break;
}
switch (text[i])
{
case '\u0020':
case '\u0009':
{
if (readerHelper.IsWhiteSpaceChangeLine(last))
{
hack++;
}
else
{
writer.Write(last = text[i]);
}
}
break;
case '\u000A':
case '\u000D':
{
switch (last)
{
case '\u0020':
case '\u0009':
{
writer.Write(last = text[i]);
}
break;
case '\u000A':
case '\u000D':
{
hack++;
}
break;
default:
{
writer.Write(last = text[i]);
}
break;
}
}
break;
case '\'':
{
writer.Write(last = text[i]);
var start = i;
var end = text.Length;
while (true)
{
start++;
if (text.Length <= start)
{
throw new DataFormatException("sql tag {0} can not find ' char;", this.Id);
}
if (text[start] == '$')
{
last = '$';
writer.Write('$');
var start2 = start;
var end2 = text.Length;
while (true)
{
start2++;
if (text.Length <= start2)
{
break;
}
if (text[start2] == '\'')
{
throw new DataFormatException("sql tag {0} can not find $ char;", this.Id);
}
if (text[start2] == '$')
{
writer.Write(last = '$');
end2 = start2 - 1;
cuted = true;
break;
}
writer.Write(last = text[start2]);
if (this.Pause(readerHelper, text[start2]))
{
end2 = start2 - 1;
break;
}
}
//从引号到$中间多了某些字符
var ss = start + 1;
var se = end2 - start;
var name = text.Sub(ss, se);
var parameter = new ParameterPosition()
{
Name = name,
SourcePrefix = new string(text[start], 1),
ActualPrefix = parameterPrefix,
StartPosition = start + 1 - hack,
PrefixStart = start - hack,
StopPosition = end2 - hack,
PositionLength = end2 - start,
};
if (cuted)
{
parameter.StopPosition += 1;
parameter.PositionLength += 1;
cuted = false;
}
parameter.TextParameter = parameter.SourcePrefix == "$";
label.Add(parameter);
start = start2;
}
else if (text[start] == '@')
{
throw new DataFormatException("sql tag {0} reading '@' is error;", this.Id);
}
else
{
writer.Write(last = text[start]);
}
if (text[start] == '\'')
{
i = start;
break;
}
}
}
break;
case '$':
{
last = '$';
writer.Write('$');
var start = i;
var end = text.Length;
while (true)
{
start++;
if (text.Length <= start)
{
throw new ArgumentOutOfRangeException($"start with $ must end with $,position is {start}");
}
if (text[start] == '$')
{
last = '$';
writer.Write('$');
end = start - 1;
cuted = true;
break;
}
writer.Write(last = text[start]);
if (this.Pause(readerHelper, text[start]))
{
end = start - 1;
break;
}
}
var name = text.Sub(i + 1, end - i);
var parameter = new ParameterPosition()
{
Name = name,
SourcePrefix = new string(text[i], 1),
ActualPrefix = parameterPrefix,
StartPosition = (i + 1) - hack,
PrefixStart = i - hack,
StopPosition = end - hack,
PositionLength = (end - i),
};
if (cuted)
{
parameter.StopPosition += 1;
parameter.PositionLength += 1;
cuted = false;
}
parameter.TextParameter = parameter.SourcePrefix == "$";
label.Add(parameter);
i = start;
}
break;
case '@':
{
last = parameterPrefix.Last();
writer.Write(parameterPrefix);
var start = i;
var end = text.Length;
while (true)
{
start++;
if (text.Length <= start)
{
end = start - 1;
break;
}
writer.Write(last = text[start]);
if (this.Pause(readerHelper, text[start]))
{
end = start - 1;
break;
}
}
var name = text.Sub(i + 1, end - i);
var parameter = new ParameterPosition()
{
Name = name,
SourcePrefix = new string(text[i], 1),
ActualPrefix = parameterPrefix,
StartPosition = (i + 1) - hack,
PrefixStart = i - hack,
StopPosition = (i + end - i) - hack,
PositionLength = (end - i),
};
parameter.TextParameter = parameter.SourcePrefix == "$";
/*前缀为@@这样的长度*/
if (parameterPrefix.Length > 1)
{
parameter.StopPosition += parameterPrefix.Length - 1;
parameter.PositionLength += parameterPrefix.Length - 1;
}
label.Add(parameter);
i = start;
}
break;
default:
{
writer.Write(last = text[i]);
}
break;
}
}
label.SqlText = writer.ToString();
this.TextLength += label.SqlText.Length;
writer.Clear();
return(label);
}
