private IDynamicProperty Parse(IParsingSourceStream sourceStream, ref string line, ref int indentation, ref bool useTab)
{
while (string.IsNullOrEmpty(line) && !sourceStream.EndOfStream)
{
sourceStream.ReadLine();
line = sourceStream.Line;
}
IDeclarationSource PropertySource;
string ResultValue;
ParserDomain.ParseStringPair(sourceStream, ':', out PropertySource, out ResultValue);
if (string.IsNullOrEmpty(PropertySource.Name))
{
throw new ParsingException(209, sourceStream, "Missing dynamic property name.");
}
string CSharpName = ParserDomain.ToCSharpName(PropertySource.Source, PropertySource.Name);
DynamicOperationResults Result;
if (ResultValue == "boolean")
{
Result = DynamicOperationResults.Boolean;
}
else
{
throw new ParsingException(210, sourceStream, $"Invalid dynamic property type '{ResultValue}'.");
}
Stack <IDynamicOperation> OperationStack = new Stack <IDynamicOperation>();
IDynamicOperation RootOperation = null;
for (;;)
{
sourceStream.ReadLine();
line = sourceStream.Line;
if (string.IsNullOrEmpty(line))
{
break;
}
if (indentation < 0)
{
MeasureIndentation(sourceStream, ref indentation, ref useTab);
}
int Depth = GetIndentation(sourceStream, indentation, useTab);
string Text = line.Trim();
if (Text == "NOT")
{
OperationStack.Push(new UnaryOperation(DynamicOperationTypes.NOT));
}
else if (Text == "OR")
{
OperationStack.Push(new BinaryOperation(DynamicOperationTypes.OR));
}
else if (Text == "AND")
{
OperationStack.Push(new BinaryOperation(DynamicOperationTypes.AND));
}
else if (Text == "EQUALS")
{
OperationStack.Push(new BinaryOperation(DynamicOperationTypes.EQUALS));
}
else if (Text == "GREATER THAN")
{
OperationStack.Push(new BinaryOperation(DynamicOperationTypes.GREATER_THAN));
}
else if (Text == "IS EMPTY")
{
OperationStack.Push(new UnaryOperation(DynamicOperationTypes.IS_EMPTY));
}
else
{
IDynamicOperation Operand;
int IntegerConstantValue;
if (int.TryParse(Text, out IntegerConstantValue))
{
Operand = new IntegerConstantOperation(IntegerConstantValue);
}
else
{
IDeclarationSource ObjectSource;
IDeclarationSource MemberSource;
IDeclarationSource KeySource;
if (!ParserDomain.TryParseObjectProperty(sourceStream, Text, out ObjectSource, out MemberSource, out KeySource))
{
throw new ParsingException(211, sourceStream, $"Expected operator, integer constant or object property.");
}
ComponentInfo Info = new ComponentInfo();
Info.ObjectSource = ObjectSource;
Info.MemberSource = MemberSource;
Info.KeySource = KeySource;
ComponentProperty ValueProperty = new ComponentProperty(Info);
Operand = new PropertyValueOperation(ValueProperty);
}
while (OperationStack.Count > 0)
{
IDynamicOperation CurrentOperation = OperationStack.Peek();
if ((CurrentOperation is IUnaryOperation AsUnary) && (AsUnary.Operand == null))
{
AsUnary.SetOperand(Operand);
RootOperation = OperationStack.Pop();
Operand = RootOperation;
}