public WomElement(WomElement other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
this._name = other._name;
WomPropertyCollection attrs = other._properties;
if (attrs != null)
{
this._properties = new WomPropertyCollection(attrs);
}
if (other._content is string)
{
this._content = other._content;
}
else
{
WomElementCollection otherElementList = other._content as WomElementCollection;
if (otherElementList != null)
{
WomElementCollection elementList = ElementList;
for (int i = 0; i < otherElementList.Count; i++)
{
elementList.Add(new WomElement(otherElementList[i]));
}
}
}
}
private void Initialize(WomElement element)
{
_start = ProcessElement(element);
AddSuccess();
}
public override bool MoveToPrevious()
{
if (_propertyIndex < 0)
{
int index = GetElementIndex();
if (index >= 0 && --index >= 0)
{
this._element = this._element._parent.ElementList[index];
this._elementIndex = index;
return true;
}
}
return false;
}
public override bool MoveToNext()
{
if (_propertyIndex < 0)
{
int index = GetElementIndex();
if (index >= 0 && ++index < this._element._parent.ElementList.Count)
{
this._element = this._element._parent.ElementList[index];
this._elementIndex = index;
return true;
}
}
return false;
}
public override bool MoveTo(XPathNavigator other)
{
WomXPathNavigator womNavigator = other as WomXPathNavigator;
if (womNavigator != null)
{
_element = womNavigator._element;
_propertyIndex = womNavigator._propertyIndex;
return true;
}
return false;
}
// Constructors
public ParserEngineBuilder(WomElement element)
{
Initialize(element);
}
private int ProcessSetUnion(WomElement element)
{
ParserCharSet set = new ParserCharSet();
WomElementCollection list = element.ElementList;
for (int i = 0; i < list.Count; i++)
{
set = set + _charSets[ProcessElement(list[i])];
}
_charSets.Add(set);
return _charSets.Count - 1;
}
private int ProcessSequence(WomElement element)
{
WomElementCollection sequence = element.ElementList;
return ProcessElementList(sequence);
}
private int ProcessChoice(int choice1, WomElement element)
{
// Create first choice last instruction
int choice1End = AddEmpty();
// Create a choice node to point to the two defined choices
int result = AddChoice(c_unused, c_unused);
// Create second choice
int choice2 = ProcessElement(element);
// Point the choice node to its alternatives
SetArguments(result, choice1, choice2);
// Point end of first choice to the end of second choice
SetArguments(choice1End, _instructions.Count);
return result;
}
private int ProcessChoice(WomElement element)
{
WomElementCollection elementList = element.ElementList;
int result = ProcessElement(elementList[0]);
for (int i = 1; i < elementList.Count; i++)
{
result = ProcessChoice(result, elementList[i]);
}
return result;
}
private int ProcessCharSetString(WomElement element)
{
char[] chars = element.Properties["Text"].ToCharArray();
ParserCharSet charSet = new ParserCharSet(chars);
return AddCharSet(charSet);
}
private int ProcessCharSetRange(WomElement element)
{
ParserCharSet set = ParserCharSet.FromRange(
Convert.ToChar(element.Properties["Start"], CultureInfo.CurrentCulture),
Convert.ToChar(element.Properties["End"], CultureInfo.CurrentCulture));
_charSets.Add(set);
return _charSets.Count - 1;
}
private int ProcessCharSetDefinition(WomElement element)
{
int index = _charSetIndex[element.Properties["Name"]];
_charSets[index] = _charSets[ProcessElement(element.ElementList[0])];
return index;
}
private int ProcessCallRule(WomElement element)
{
string ruleName = element.Properties["Name"];
int ruleIndex = _ruleIndex[ruleName];
return AddCallRule(ruleIndex);
}
private int ProcessAttribute(WomElement element)
{
int nameIndex = AddString(element.Properties["Name"]);
int result = _instructions.Count;
int nextIndex = _instructions.Count + 1;
_instructions.Add(new ParserInstruction(ParserInstructionCode.StartAttribute, nextIndex, nameIndex));
ProcessElementList(element.ElementList);
nextIndex = _instructions.Count + 1;
_instructions.Add(new ParserInstruction(ParserInstructionCode.EndAttribute, nextIndex, nameIndex));
return result;
}
private int ProcessOptional(WomElement element)
{
int contentStart = ProcessElementList(element.ElementList);
int contentEnd = AddEmpty();
int result = AddChoice(contentStart, contentEnd);
SetArguments(contentEnd, _instructions.Count);
return result;
}
private int ProcessRule(WomElement element)
{
int rule = AddRule(element.Properties["Name"]);
_rules[rule].ElementName = element.Properties["ElementName"];
SetRuleStart(rule, ProcessElementList(element.ElementList));
AddRuleSuccess();
return rule;
}
private int ProcessElement(WomElement element)
{
switch (element.Name)
{
case "AnyChar":
return ProcessAnyChar();
case "Attribute":
return ProcessAttribute(element);
case "CallRule":
return ProcessCallRule(element);
case "CharSetDefinition":
return ProcessCharSetDefinition(element);
case "CharSetRange":
return ProcessCharSetRange(element);
case "CharSetString":
return ProcessCharSetString(element);
case "Choice":
return ProcessChoice(element);
case "Grammar":
return ProcessGrammar(element);
case "LineEnd":
return ProcessLineEnd(element);
case "LineStart":
return ProcessLineStart(element);
case "Match":
return ProcessMatch(element);
case "MatchAny":
return ProcessMatchAny(element);
case "MatchRange":
return ProcessMatchRange(element);
case "MatchSet":
return ProcessMatchSet(element);
case "OneOrMore":
return ProcessOneOrMore(element);
case "Optional":
return ProcessOptional(element);
case "Rule":
return ProcessRule(element);
case "Sequence":
return ProcessSequence(element);
case "SetSubtraction":
return ProcessSetSubtraction(element);
case "SetUnion":
return ProcessSetUnion(element);
case "ZeroOrMore":
return ProcessZeroOrMore(element);
default:
throw new InvalidOperationException("Unknown element name - " + element.Name);
}
}
private int ProcessSetSubtraction(WomElement element)
{
ParserCharSet charSet1 = _charSets[ProcessElement(element.ElementList[0])];
ParserCharSet charSet2 = _charSets[ProcessElement(element.ElementList[1])];
return AddCharSet(charSet1 - charSet2);
}
private int ProcessGrammar(WomElement element)
{
// Create rule and char set index
int ruleIndex = 0;
int charSetIndex = 0;
for (int i = 0; i < element.ElementList.Count; i++)
{
WomElement item = element.ElementList[i];
if (item.Name == "Rule")
{
_rules.Add(null);
_ruleIndex.Add(item.Properties["Name"], ruleIndex++);
}
else if (item.Name == "CharSetDefinition")
{
_charSets.Add(null);
_charSetIndex.Add(item.Properties["Name"], charSetIndex++);
}
}
int startRule = ProcessElementList(element.ElementList);
_start = AddCallRule(startRule);
return _start;
}
private int ProcessZeroOrMore(WomElement element)
{
int contentStart = ProcessElementList(element.ElementList);
return AddChoice(contentStart, c_nextInstruction);
}
private int ProcessLineStart(WomElement element)
{
int nextIndex = _instructions.Count + 1;
_instructions.Add(new ParserInstruction(ParserInstructionCode.LineStart, nextIndex));
return _instructions.Count - 1;
}
private void ReadRule()
{
WomElement rule = new WomElement("Rule");
if (_reader.HasAttributes)
{
rule.Properties["Name"] = _reader.GetAttribute("Name");
string expr = _reader.GetAttribute("Match");
ParserExpressionReader exprReader = new ParserExpressionReader();
exprReader.Parse(expr, rule);
_reader.MoveToElement();
_document.Root.Add(rule);
}
}
private int ProcessMatch(WomElement element)
{
string text = element.Properties["Text"];
if (text.Length == 1)
{
return AddMatchChar(text[0]);
}
return AddMatchString(text);
}
public override bool MoveToFirstChild()
{
if (_propertyIndex < 0)
{
WomElement element = this._element.FirstChild;
if (element != null)
{
this._element = element;
this._elementIndex = 0;
return true;
}
}
return false;
}
private int ProcessMatchAny(WomElement element)
{
int nextIndex = _instructions.Count + 1;
_instructions.Add(new ParserInstruction(ParserInstructionCode.MatchAny, nextIndex));
return _instructions.Count - 1;
}
public override bool MoveToParent()
{
if (_propertyIndex >= 0)
{
_propertyIndex = -1;
return false;
}
WomElement element = this._element.Parent;
if (element != null)
{
this._element = element;
this._elementIndex = -1;
return true;
}
return false;
}
private int ProcessMatchRange(WomElement element)
{
return AddMatchSet(ParserCharSet.FromRange(
Convert.ToChar(element.Properties["Start"], CultureInfo.CurrentCulture),
Convert.ToChar(element.Properties["End"], CultureInfo.CurrentCulture)));
}
// Constructors
public WomXPathNavigator(WomElement element)
{
this._element = element;
this._elementIndex = -1;
this._propertyIndex = -1;
}
private int ProcessMatchSet(WomElement element)
{
return AddMatchSet(element.Properties["Name"]);
}