public bool Parse(CharacterBuffer buffer)
{
int num;
this.Start = buffer.IndexInOriginalBuffer;
if (buffer.IsAtEnd)
{
Utility.ParseError("Reached end of buffer looking for a conditional!", buffer);
this.IsValid = false;
return false;
}
this.Literal = buffer.GetStringToMatchingParenthesis();
Match match = this.ConditionalRegex.Match(this.Literal);
if (!match.Success)
{
buffer.Move(1 - this.Literal.Length);
return false;
}
var item = match.Groups["Expression"];
int start = this.Start + item.Index;
string str = item.Value.Substring(1, item.Value.Length - 2);
this.Name = str;
this.expType = Conditional.ExpType.Expression;
this.Exp = new SubExpression(item.Value, start, buffer.IgnoreWhiteSpace, buffer.IsEcma, true)
{
Start = start,
End = this.Exp.Start + item.Length
};
if (this.Exp.Exp[0] is Group)
{
Group group = (Group)this.Exp.Exp[0];
switch (group.Type)
{
case GroupType.Balancing:
{
group.Description = "Test condition cannot be a balancing group";
group.IsValid = false;
this.IsValid = false;
break;
}
case GroupType.Named:
{
group.Description = "Test condition cannot be a named group";
group.IsValid = false;
this.IsValid = false;
break;
}
case GroupType.Numbered:
{
if (BackReference.ContainsName(str))
{
this.expType = Conditional.ExpType.NamedCapture;
break;
}
else if (int.TryParse(str, out num))
{
this.expType = Conditional.ExpType.NumberedCapture;
if (BackReference.ContainsNumber(str))
{
break;
}
this.expType = Conditional.ExpType.NonExistentNumber;
group.IsValid = false;
break;
}
else if (!this.AlphanumericRegex.Match(str).Success)
{
group.Description = "Match if prefix is present";
break;
}
else if (!char.IsDigit(str[0]))
{
this.expType = Conditional.ExpType.NonExistentName;
break;
}
else
{
this.expType = Conditional.ExpType.InvalidName;
group.IsValid = false;
break;
}
}
case GroupType.Noncapturing:
case GroupType.Greedy:
case GroupType.OptionsInside:
case GroupType.OptionsOutside:
{
group.Description = "Test condition is";
break;
}
case GroupType.SuffixPresent:
{
group.Description = "Match if suffix is present";
break;
}
case GroupType.PrefixPresent:
{
group.Description = "Match if prefix is present";
break;
}
case GroupType.SuffixAbsent:
{
group.Description = "Match if suffix is absent";
break;
}
case GroupType.PrefixAbsent:
{
group.Description = "Match if prefix is absent";
break;
}
case GroupType.Comment:
{
group.Description = "Test condition cannot be a comment!";
group.IsValid = false;
this.IsValid = false;
break;
}
default:
{
goto case GroupType.OptionsOutside;
}
}
group.Description = string.Concat(group.Description, " ", group.Literal);
}
else
{
this.expType = Conditional.ExpType.NotAGroup;
}
item = match.Groups["Contents"];
string value = item.Value;
List<int> nums = (new CharacterBuffer(value)).FindNakedPipes();
start = this.Start + item.Index;
switch (nums.Count)
{
case 0:
{
this.Yes = new SubExpression(value, start, buffer.IgnoreWhiteSpace, buffer.IsEcma)
{
Start = start,
End = this.Yes.Start + item.Length
};
this.Description = "Conditional Expression with \"Yes\" clause only";
break;
}
case 1:
{
int item1 = nums[0] + 1;
this.Yes = new SubExpression(value.Substring(0, item1 - 1), start, buffer.IgnoreWhiteSpace, buffer.IsEcma)
{
Start = start,
End = this.Yes.Start + item1 - 1
};
start = this.Yes.Start + item1;
this.No = new SubExpression(value.Substring(item1), start, buffer.IgnoreWhiteSpace, buffer.IsEcma)
{
Start = start,
End = this.Yes.Start + item.Length
};
this.Description = "Conditional Expression with \"Yes\" and \"No\" clause";
break;
}
default:
{
this.Yes = new SubExpression(value, start, buffer.IgnoreWhiteSpace, buffer.IsEcma)
{
Start = start,
End = this.Yes.Start + item.Length
};
this.Description = "Too many | symbols in a conditional expression";
this.IsValid = false;
break;
}
}
buffer.MoveNext();
base.ParseRepetitions(buffer);
return true;
}
public Group(CharacterBuffer buffer, bool SkipCaptureNumber)
{
char literal;
char chr;
int num;
bool flag;
bool flag1;
//this.Image = ImageType.Group;
this.Start = buffer.IndexInOriginalBuffer;
bool needToParseRepititions = true;
this.Literal = buffer.GetStringToMatchingParenthesis();
if (this.Literal == "")
{
return;
}
Match match = Group.RegGroup.Match(this.Literal);
if (!match.Success)
{
this.Type = GroupType.Invalid;
this.Content = new SubExpression("", 0, false, false);
this.IsValid = false;
needToParseRepititions = false;
this.Description = "Syntax error in group definition";
buffer.Move(1 - this.Literal.Length);
}
else
{
string value = match.Groups["GroupType"].Value;
string str = match.Groups["Name"].Value;
string value1 = match.Groups["Number"].Value;
string str1 = match.Groups["Options"].Value;
string value2 = match.Groups["Contents"].Value;
int start = this.Start + match.Groups["Contents"].Index;
this.Name2 = match.Groups["Name2"].Value;
if (str1 == "")
{
string str2 = value;
string str3 = str2;
if (str2 != null)
{
switch (str3)
{
case ":":
{
this.Type = GroupType.Noncapturing;
goto Label0;
}
case "=":
{
this.Type = GroupType.SuffixPresent;
goto Label0;
}
case "<=":
{
this.Type = GroupType.PrefixPresent;
goto Label0;
}
case "<!":
{
this.Type = GroupType.PrefixAbsent;
goto Label0;
}
case "!":
{
this.Type = GroupType.SuffixAbsent;
goto Label0;
}
case "#":
{
this.Type = GroupType.Comment;
needToParseRepititions = false;
goto Label0;
}
case ">":
{
this.Type = GroupType.Greedy;
goto Label0;
}
case "(":
{
this.Type = GroupType.Invalid;
this.Content = new SubExpression("", 0, false, false);
this.IsValid = false;
this.Description = "Syntax error in group definition";
needToParseRepititions = false;
buffer.Move(1 - this.Literal.Length);
goto Label0;
}
case "":
{
if (value2.Length <= 0 || !(value2.Substring(0, 1) == "?"))
{
this.Type = GroupType.Numbered;
if (SkipCaptureNumber)
{
this.Name = "";
goto Label0;
}
else
{
this.Name = BackReference.AddNumber().ToString();
goto Label0;
}
}
else
{
this.Type = GroupType.Invalid;
value2 = value2.Substring(1);
this.Content = new SubExpression(value2, start + 1, buffer.IgnoreWhiteSpace, buffer.IsEcma);
this.Description = "Illegal group syntax";
this.IsValid = false;
goto Label0;
}
}
case "-":
{
int index = match.Groups["Name"].Index - 1;
int index1 = match.Groups["Name2"].Index + match.Groups["Name2"].Length;
literal = this.Literal[index];
chr = this.Literal[index1];
if (literal != '<' || chr != '>')
{
flag1 = (literal != '\'' ? false : chr == '\'');
}
else
{
flag1 = true;
}
this.IsValid = flag1;
if (!this.IsValid)
{
this.Description = "Invalid syntax for balancing group";
}
this.Type = GroupType.Balancing;
this.Name = str;
if (this.Name != "")
{
if (!int.TryParse(this.Name, out num))
{
BackReference.AddName(this.Name);
}
else
{
BackReference.AddNumber(num);
}
}
if (!int.TryParse(this.Name2, out num))
{
if (BackReference.ContainsName(this.Name2))
{
goto Label0;
}
this.Description = string.Concat("Invalid group name in a balancing group: ", this.Name2);
this.IsValid = false;
goto Label0;
}
else
{
if (BackReference.ContainsNumber(this.Name2))
{
goto Label0;
}
this.Description = string.Concat("Invalid group number in a balancing group: ", this.Name2);
this.IsValid = false;
goto Label0;
}
}
}
}
literal = value[0];
chr = value[value.Length - 1];
if (literal != '<' || chr != '>')
{
flag = (literal != '\'' ? false : chr == '\'');
}
else
{
flag = true;
}
this.IsValid = flag;
if (str.Length > 0)
{
this.Type = GroupType.Named;
this.Name = str;
BackReference.AddName(str);
if (!this.IsValid)
{
this.Description = string.Concat("[", str, "] Invalid syntax for named group");
}
}
else if (value1.Length <= 0)
{
this.Type = GroupType.Named;
this.Name = "";
this.IsValid = false;
this.Description = "Missing name for a named group";
}
else
{
this.Type = GroupType.Numbered;
this.Name = value1;
BackReference.AddNumber(int.Parse(value1));
if (!this.IsValid)
{
this.Description = string.Concat("[", value1, "] Invalid syntax for numbered group");
}
}
}
else
{
this.DecodeOptions(str1);
if (this.Type == GroupType.OptionsOutside)
{
needToParseRepititions = false;
}
}
Label0: // TODO: Remove this and create proper logic!
SetContent(buffer, value2, start);
}
buffer.MoveNext();
if (needToParseRepititions)
{
ParseRepetitions(buffer);
}
else
{
End = buffer.IndexInOriginalBuffer;
RepeatType = Repeat.Once;
}
SetDescription();
}
