/// <summary>
/// Tries to parse a batch of similar syntactic items with specified delimiter.
/// </summary>
private bool ParseManyInternal(SyntacticState state, SyntacticItem part, SyntacticItem delimiter)
{
int innerIndex = state.InnerPosition;
int outerIndex = state.OuterPosition;
if (!part.Parse(state))
{
return(false);
}
while (true)
{
int lastInnerIndex = state.InnerPosition;
int lastOuterIndex = state.OuterPosition;
if (delimiter != null)
{
if (!delimiter.Parse(state))
{
break;
}
}
if (!part.Parse(state))
{
state.Reset(lastInnerIndex, lastOuterIndex);
break;
}
}
state.AddBack(Key, innerIndex, outerIndex);
return(true);
}
/// <summary>
/// Tries to parse a consequent number of specified syntactic items.
/// </summary>
private bool ParseAllInternal(SyntacticState state, params SyntacticItem[] parts)
{
int innerIndex = state.InnerPosition;
int outerIndex = state.OuterPosition;
bool parsed = true;
foreach (SyntacticItem part in parts)
{
if (!part.Parse(state))
{
parsed = false;
break;
}
}
if (!parsed)
{
state.Reset(innerIndex, outerIndex);
return(false);
}
state.AddBack(Key, innerIndex, outerIndex);
return(true);
}
