/// <summary>
/// True if the containers match, ignoring the statements in their bodies.
/// </summary>
/// <param name="st1"></param>
/// <param name="st2"></param>
/// <param name="allowBrokenLoops"></param>
/// <param name="ignoreLoopDirection"></param>
/// <returns></returns>
internal static bool ContainersAreEqual(IStatement st1, IStatement st2, bool allowBrokenLoops = false, bool ignoreLoopDirection = false)
{
if (ReferenceEquals(st1, st2))
{
return(true);
}
if (st1 is IForStatement)
{
IForStatement ifs1 = (IForStatement)st1;
if (st2 is IForStatement)
{
IForStatement ifs2 = (IForStatement)st2;
if (ignoreLoopDirection && Recognizer.IsForwardLoop(ifs1) != Recognizer.IsForwardLoop(ifs2))
{
ifs2 = (IForStatement)CreateContainer(ifs2);
Recognizer.ReverseLoopDirection(ifs2);
}
return(ifs1.Initializer.Equals(ifs2.Initializer) &&
ifs1.Condition.Equals(ifs2.Condition) &&
ifs1.Increment.Equals(ifs2.Increment) &&
(allowBrokenLoops || ((ifs1 is IBrokenForStatement) == (ifs2 is IBrokenForStatement))));
}
else
{
return(false);
}
}
else if (st1 is IConditionStatement)
{
IConditionStatement ics1 = (IConditionStatement)st1;
if (st2 is IConditionStatement)
{
IConditionStatement ics2 = (IConditionStatement)st2;
return(ics1.Condition.Equals(ics2.Condition));
}
else
{
return(false);
}
}
else if (st1 is IRepeatStatement)
{
IRepeatStatement irs1 = (IRepeatStatement)st1;
if (st2 is IRepeatStatement)
{
IRepeatStatement irs2 = (IRepeatStatement)st2;
return(irs1.Count.Equals(irs2.Count));
}
else
{
return(false);
}
}
else
{
return(st1 == st2);
}
}