protected virtual void ProcessTimeCommand()
{
DmlSyntaxError badTimeCommand = DmlSyntaxError.BadTimeCommandSyntax();
ProcessExpression(GetUntil(DmlTokens.LANGLE));
string jumpName = String.Format("#{0:X6}", Globals.randGen.Next(0x1000000));
Instructions.Add(new JumpIfFalse(jumpName));
Advance(exception: badTimeCommand);
int angleDepth = 0;
while (!Done)
{
if (DmlTokens.IsMatch(CurrentToken, DmlTokens.LANGLE))
{
angleDepth++;
}
else if (DmlTokens.IsMatch(CurrentToken, DmlTokens.RANGLE))
{
if (angleDepth == 0)
{
break;
}
angleDepth--;
}
ParseNext();
}
if (angleDepth != 0) // We want it to break forcefully, otherwise there would be invalid syntax.
{
throw DmlSyntaxError.MismatchedNamespaceDelimiters();
}
Instructions.Add(new Label(jumpName));
}
protected override void ProcessTimeCommand()
{
if (inTimeStamp)
{
throw DmlSyntaxError.BadTimeCommandPlacement();
}
inTimeStamp = true;
DmlSyntaxError badTimeCommand = DmlSyntaxError.BadTimeCommandSyntax();
double time, start = -1, end = -1;
string timeCommand = CurrentToken;
switch (timeCommand)
{
case "At":
case "Before":
case "After":
SetExpecting(DmlTokens.LPAR, DmlTokens.NUMBER, DmlTokens.RPAR, DmlTokens.LANGLE);
Advance(2, exception: badTimeCommand);
time = Double.Parse(CurrentToken);
Advance(2, exception: badTimeCommand);
if (timeCommand == "At")
{
currentTimestamp = new TimestampAt(time);
}
else if (timeCommand == "Before")
{
currentTimestamp = new TimestampBefore(time);
}
else
{
currentTimestamp = new TimestampAfter(time);
}
break;
case "AtIntervals":
case "DuringIntervals":
SetExpecting(DmlTokens.LPAR, DmlTokens.NUMBER);
Advance(2, exception: badTimeCommand);
time = Double.Parse(CurrentToken);
if (DmlTokens.IsMatch(NextToken, DmlTokens.COMMA))
{
SetExpecting(DmlTokens.COMMA, DmlTokens.NUMBER);
Advance(2, exception: badTimeCommand);
start = Double.Parse(CurrentToken);
SetExpecting(DmlTokens.COMMA, DmlTokens.NUMBER);
Advance(2, exception: badTimeCommand);
end = Double.Parse(CurrentToken);
}
SetExpecting(DmlTokens.RPAR, DmlTokens.LANGLE);
Advance(2, exception: badTimeCommand);
if (timeCommand == "AtIntervals")
{
if (start == -1)
{
currentTimestamp = new TimestampAtIntervals(time);
}
else
{
currentTimestamp = new TimestampAtIntervals(time, start, end);
}
}
else
{
if (start == -1)
{
currentTimestamp = new TimestampDuringIntervals(time);
}
else
{
currentTimestamp = new TimestampDuringIntervals(time, start, end);
}
}
break;
case "From":
SetExpecting(
DmlTokens.LPAR, DmlTokens.NUMBER, DmlTokens.COMMA,
DmlTokens.NUMBER, DmlTokens.RPAR, DmlTokens.LANGLE
);
Advance(2, exception: badTimeCommand);
start = Double.Parse(CurrentToken);
Advance(2, exception: badTimeCommand);
end = Double.Parse(CurrentToken);
Advance(2, exception: badTimeCommand);
currentTimestamp = new TimestampFrom(start, end);
break;
}
Advance(exception: badTimeCommand);
int angleDepth = 0;
while (!Done)
{
if (DmlTokens.IsMatch(CurrentToken, DmlTokens.LANGLE))
{
angleDepth++;
}
else if (DmlTokens.IsMatch(CurrentToken, DmlTokens.RANGLE))
{
if (angleDepth == 0)
{
break;
}
angleDepth--;
}
ParseNext();
}
currentTimestamp.SetCode(new CodeBlock(Instructions.ToArray()));
Instructions = new List <Instruction>();
timeline.AddTimestamp(currentTimestamp);
inTimeStamp = false;
}