private bool CheckLookahead(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?\r\n\t\t\t\t\t\t(?<Assertion><=|<!|=|!) # assertion char\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (!match.Success)
{
return(false);
}
switch (match.Groups["Assertion"].Value)
{
case "=":
this.description = "zero-width positive lookahead";
break;
case "!":
this.description = "zero-width negative lookahead";
break;
case "<=":
this.description = "zero-width positive lookbehind";
break;
case "<!":
this.description = "zero-width negative lookbehind";
break;
}
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return(true);
}
public void AddLookup(RegexItem item, int startLocation, int endLocation, bool canCoalesce)
{
if (this.inSeries)
{
if (canCoalesce)
{
RegexRef ref2 = (RegexRef)this.expressionLookup[this.expressionLookup.Count - 1];
ref2.StringValue = ref2.StringValue + item.ToString(0);
ref2.Length += (endLocation - startLocation) + 1;
}
else
{
this.expressionLookup.Add(new RegexRef(item, startLocation, endLocation));
this.inSeries = false;
}
}
else
{
if (canCoalesce)
{
this.inSeries = true;
}
this.expressionLookup.Add(new RegexRef(item, startLocation, endLocation));
}
}
private bool HandlePlainOldCapture(RegexBuffer buffer)
{
if (buffer.ExplicitCapture)
{
this.description = string.Format("Non-capturing Group", new object[0]);
}
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return(true);
}
private bool CheckConditional(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?\\(\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Conditional Subexpression", new object[0]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexConditional(buffer);
return(true);
}
return(false);
}
private bool CheckBalancedGroup(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?[\\<|'] # ?< or ?'\r\n\t\t\t\t\t\t(?<Name1>[a-zA-Z]+?) # Capture name1\r\n\t\t\t\t\t\t-\r\n\t\t\t\t\t\t(?<Name2>[a-zA-Z]+?) # Capture name2\r\n\t\t\t\t\t\t[\\>|'] # ?> or ?'\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Balancing Group <{0}>-<{1}>", match.Groups["Name1"], match.Groups["Name2"]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return(true);
}
return(false);
}
private bool CheckOptions(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?(?<Options>[imnsx-]+):\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
string text = match.Groups["Options"].Value;
this.description = string.Format("Set options to {0}", optionNames[text]);
this.expression = null;
buffer.Offset += match.Groups[0].Length;
return(true);
}
return(false);
}
private bool CheckNonCapturing(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?:\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Non-capturing Group", new object[0]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return(true);
}
return(false);
}
private bool CheckNamed(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?(\\<|') # ?< or ?'\r\n\t\t\t\t\t\t(?<Name>[a-zA-Z0-9]+?) # Capture name\r\n\t\t\t\t\t\t(\\>|') # ?> or ?'\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the string\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Capture to <{0}>", match.Groups["Name"]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return(true);
}
return(false);
}
private bool CheckOptions(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?(?<Options>[imnsx-]+):\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
string text = match.Groups["Options"].Value;
this.description = string.Format("Set options to {0}", optionNames[text]);
this.expression = null;
buffer.Offset += match.Groups[0].Length;
return true;
}
return false;
}
private bool CheckNonCapturing(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?:\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Non-capturing Group", new object[0]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return true;
}
return false;
}
private bool CheckNamed(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?(\\<|') # ?< or ?'\r\n\t\t\t\t\t\t(?<Name>[a-zA-Z0-9]+?) # Capture name\r\n\t\t\t\t\t\t(\\>|') # ?> or ?'\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the string\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Capture to <{0}>", match.Groups["Name"]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return true;
}
return false;
}
private bool CheckLookahead(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?\r\n\t\t\t\t\t\t(?<Assertion><=|<!|=|!) # assertion char\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (!match.Success)
{
return false;
}
switch (match.Groups["Assertion"].Value)
{
case "=":
this.description = "zero-width positive lookahead";
break;
case "!":
this.description = "zero-width negative lookahead";
break;
case "<=":
this.description = "zero-width positive lookbehind";
break;
case "<!":
this.description = "zero-width negative lookbehind";
break;
}
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return true;
}
private bool CheckConditional(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?\\(\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Conditional Subexpression", new object[0]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexConditional(buffer);
return true;
}
return false;
}
public RegexRef(RegexItem regexItem, int start, int end)
{
this.stringValue = regexItem.ToString(0);
this.start = start;
this.end = end;
}
private bool HandlePlainOldCapture(RegexBuffer buffer)
{
if (buffer.ExplicitCapture)
{
this.description = string.Format("Non-capturing Group", new object[0]);
}
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return true;
}
public void AddLookup(RegexItem item, int startLocation, int endLocation)
{
this.AddLookup(item, startLocation, endLocation, false);
}
private bool CheckBalancedGroup(RegexBuffer buffer)
{
Match match = new Regex("\r\n\t\t\t\t ^ # anchor to start of string\r\n\t\t\t\t\t\t\\?[\\<|'] # ?< or ?'\r\n\t\t\t\t\t\t(?<Name1>[a-zA-Z]+?) # Capture name1\r\n\t\t\t\t\t\t-\r\n\t\t\t\t\t\t(?<Name2>[a-zA-Z]+?) # Capture name2\r\n\t\t\t\t\t\t[\\>|'] # ?> or ?'\r\n\t\t\t\t\t\t(?<Rest>.+) # The rest of the expression\r\n\t\t\t\t\t\t", RegexOptions.IgnorePatternWhitespace).Match(buffer.String);
if (match.Success)
{
this.description = string.Format("Balancing Group <{0}>-<{1}>", match.Groups["Name1"], match.Groups["Name2"]);
buffer.Offset += match.Groups["Rest"].Index;
this.expression = new RegexExpression(buffer);
this.CheckClosingParen(buffer);
return true;
}
return false;
}
public RegexRef(RegexItem regexItem, int start, int end)
{
this.stringValue = regexItem.ToString(0);
this.start = start;
this.end = end;
}