/// <summary>
/// Returns a value indicating whether the next character matches the lexical rule.
/// </summary>
/// <param name="reader">The <see cref="BranchedReader"/> that provides the input character.</param>
/// <returns><see langword="true"/> if the next character matches the lexical rule; otherwise <see langword="false"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="reader"/> is <see langword="null"/>.</exception>
public override bool Match(BranchedReader reader)
{
if (reader == null)
{
throw new ArgumentNullException();
}
BranchedReader branch1 = reader.NewBranch();
BranchedReader branch2 = reader.NewBranch();
bool check1 = First.Match(branch1);
bool check2 = Second.Match(branch2);
if (!check1 && !check2)
{
branch1.Dispose();
branch2.Dispose();
return(false);
}
if (check1 && check2)
{
reader.Merge(branch1.Position > branch2.Position ? branch1 : branch2);
}
else if (check1)
{
reader.Merge(branch1);
}
else if (check2)
{
reader.Merge(branch2);
}
branch1.Dispose();
branch2.Dispose();
return(true);
}
/// <summary>
/// Returns a value indicating whether the next character matches the lexical rule.
/// </summary>
/// <param name="reader">The <see cref="BranchedReader"/> that provides the input character.</param>
/// <returns><see langword="true"/> if the next character matches the lexical rule; otherwise <see langword="false"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="reader"/> is <see langword="null"/>.</exception>
public override bool Match(BranchedReader reader)
{
if (reader == null)
{
throw new ArgumentNullException();
}
BranchedReader branch0, branch1;
branch0 = reader.NewBranch();
bool check = true;
int count = 0;
while (true)
{
branch1 = branch0.NewBranch();
check = Content.Match(branch1);
if (check)
{
branch0.Dispose();
branch0 = branch1;
count++;
}
else
{
break;
}
if (Max > 0 && count == Max)
{
break;
}
}
branch1.Dispose();
if (count < Min)
{
branch0.Dispose();
return(false);
}
else
{
reader.Merge(branch0);
branch0.Dispose();
return(true);
}
}