private void NewOperation(RpnOperation operation)
{
while (expressionStack.TryPeek(out var stackOp) &&
!(stackOp is null) &&
!(stackOp.HasLessPriorityThan(operation)))
{
AddRpn(expressionStack.Pop());
}
expressionStack.Push(operation);
}
/// <summary>
/// Adds a new unary operation.
/// </summary>
public void UnaryOperation(Token token)
{
RpnOperation rpn = token.Value switch
{
"!" => new RpnNot(token),
"-" => new RpnNegate(token),
"$" => new RpnGetValue(token, variables),
var op => throw new RpnCreationException("Unknown unary operation: " + op)
};
NewOperation(rpn);
}
/// <summary>
/// Adds a new binary operation.
/// </summary>
public void BinaryOperation(Token token)
{
RpnOperation rpn = token.Value switch
{
"=" => new RpnAssign(token, variables),
"+" => new RpnAdd(token),
"-" => new RpnSubtract(token),
"*" => new RpnMultiply(token),
"/" => new RpnDivide(token),
"%" => new RpnMod(token),
"|" => new RpnOr(token),
"&" => new RpnAnd(token),
"~" => new RpnEqual(token),
">" => new RpnGreater(token),
"<" => new RpnLess(token),
":" => new RpnCast(token),
"?" => new RpnCheckCast(token),
"->" => new RpnRightAssign(token, variables),
var op => throw new RpnCreationException("Unknown binary operation: " + op)
};
NewOperation(rpn);
}