/// <summary>
/// Initializes a new instance of the <see cref="Expression"/> class.
/// </summary>
/// <param name="flowSymbols">The flow symbols.</param>
/// <param name="comparer">The symbol and identifier comparer.</param>
/// <exception cref="ArgumentNullException">Argument <paramref name="flowSymbols"/> or <paramref name="comparer"/> is <c>null</c>.</exception>
public Expression([NotNull] ExpressionFlowSymbols flowSymbols, [NotNull] IEqualityComparer <string> comparer)
{
Expect.NotNull(nameof(comparer), comparer);
Expect.NotNull(nameof(flowSymbols), flowSymbols);
FlowSymbols = flowSymbols;
_unaryOperatorSymbols = new Dictionary <string, UnaryOperator>(comparer);
_binaryOperatorSymbols = new Dictionary <string, BinaryOperator>(comparer);
_registeredOperators = new List <Operator>();
Comparer = comparer;
}
/// <summary>
/// Initializes static members of the <see cref="ExpressionFlowSymbols"/> class.
/// </summary>
static ExpressionFlowSymbols()
{
Default = new ExpressionFlowSymbols(",", ".", "(", ")");
}
