private void PutOperationToken(RusticOperation operation)
{
if (nextOperation != null)
{
if (operation.IsLeftUnary)
{
PutLeftOperationToken(operation);
return;
}
else
{
throw new Exception("Unexpected operator found");
}
}
operation.priorityOffset = priorityOffset;
if (operation.GetPriorityWithOffset() <= (int)RusticOperation.Priority.Ignored)
{
PutOperationOfEqualOrIgnoredPriority(operation);
}
else
if ((operation.HasRightToLeftPrecedence() && currentStack.priority <= operation.GetPriorityWithOffset()) || currentStack.priority < operation.GetPriorityWithOffset()) // TO-DO: Alterar para inserir operadores RTL
{
PutOperationOfHigherPriority(operation);
}
else
if (currentStack.priority > operation.GetPriorityWithOffset())
{
PutOperationOfLowerPriority(operation);
}
else
{
PutOperationOfEqualOrIgnoredPriority(operation);
}
}
private void PutCustomValueToken(RusticValueEvaluator value)
{
if (nextOperation == null)
{
throw new Exception($"Expecting operator, but received operand ({value.GetType().Name})");
}
nextOperation.parameter = value;
currentStack.operations.Add(nextOperation);
nextOperation = null;
}
private void PutOperationOfLowerPriority(RusticOperation operation)
{
nextOperation = operation;
while (currentStack.priority > operation.GetPriorityWithOffset())
{
currentStack = currentStack.parent;
}
if (currentStack.priority < operation.GetPriorityWithOffset())
{
PutOperationOfHigherPriority(operation);
}
}
private void ChangePriority(int addition)
{
priorityOffset += addition;
if (addition > 0)
{
RusticStack newStack = new RusticStack(stacks.Count, currentStack, priorityOffset + RusticOperation.FirstPriority);
nextOperation.parameter = new Evaluators.StackReference(newStack);
currentStack.operations.Add(nextOperation);
int index = stacks.IndexOf(currentStack);
stacks.Insert(index + 1, newStack);
currentStack = newStack;
nextOperation = new Operations.Set();
}
}
public RusticExprBuilder(RusticExpr expression, RusticContext context)
{
if (expression?.stacks.Count > 0)
{
throw new Exception("RusticExpr instance was already built and should not be built again. Did you intend to ResetExpression?");
}
this.expression = expression;
this.context = context;
nextOperation = new Operations.Set();
priorityOffset = 0;
stacks?.Add(new RusticStack(0, null, 1));
currentStack = stacks?[0];
}
private void PutOperationOfHigherPriority(RusticOperation operation)
{
nextOperation = operation;
RusticOperation lastOperationFromStack = currentStack.operations[currentStack.operations.Count - 1];
RusticValueEvaluator lastOperationValue = lastOperationFromStack.parameter;
RusticStack newStack = new RusticStack(stacks.Count, currentStack, operation.GetPriorityWithOffset());
lastOperationFromStack.parameter = new Evaluators.StackReference(newStack);
RusticOperation newSetOperation = new Operations.Set();
newSetOperation.parameter = lastOperationValue;
newStack.operations.Add(newSetOperation);
int index = stacks.IndexOf(currentStack);
stacks.Insert(index + 1, newStack);
currentStack = newStack;
}
private void PutLeftOperationToken(RusticOperation operation)
{
if (currentStack.priority == operation.GetPriorityWithOffset())
{
currentStack.operations.Add(operation);
}
else
{
RusticStack newStack = new RusticStack(stacks.Count, currentStack, operation.GetPriorityWithOffset());
newStack.operations.Add(operation);
int index = stacks.IndexOf(currentStack);
stacks.Insert(index + 1, newStack);
PutCustomValueToken(new Evaluators.StackReference(newStack));
currentStack = newStack;
nextOperation = new Operations.Set();
}
}
public void Prepare()
{
List <RusticOperation> moveLeftUnaryOperations = new List <RusticOperation>();
foreach (RusticOperation operation in operations)
{
if (operation.IsLeftUnary)
{
moveLeftUnaryOperations.Add(operation);
}
}
for (int i = moveLeftUnaryOperations.Count - 1; i >= 0; i--)
{
RusticOperation operation = moveLeftUnaryOperations[i];
operations.Remove(operation);
operations.Add(operation);
}
PreviewResultType();
}
public OperationCapture(string pattern, RusticOperation operation) : base(pattern, RusticTokenMode.Operation, (p, c) => Activator.CreateInstance(operation.GetType()))
{
}
private void PutOperationOfEqualOrIgnoredPriority(RusticOperation operation)
{
nextOperation = operation;
}
