public void Accept(UnaryOperationNode node)
{
}
public void Accept(UnaryOperationNode node)
{
switch (node.UnaryOperation)
{
case UnaryOperation.BitwiseNot:
node.Target.Visit(this);
method.Emit(node.SourceLocation, InstructionType.UnaryOperation, (int)UnaryOperation.BitwiseNot);
break;
case UnaryOperation.Dereference:
node.Target.Visit(this);
method.Emit(node.SourceLocation, InstructionType.Dereference);
break;
case UnaryOperation.LogicalNot:
node.Target.Visit(this);
method.Emit(node.SourceLocation, InstructionType.UnaryOperation, (int)UnaryOperation.LogicalNot);
break;
case UnaryOperation.Negate:
node.Target.Visit(this);
method.Emit(node.SourceLocation, InstructionType.UnaryOperation, (int)UnaryOperation.Negate);
break;
case UnaryOperation.PostDecrement:
case UnaryOperation.PostIncrement:
case UnaryOperation.PreDecrement:
case UnaryOperation.PreIncrement:
if (node.Target is IdentifierNode)
{
string identifier = ((IdentifierNode)node.Target).Identifier;
Instruction loadInstruction, storeInstruction;
if (table.ContainsGlobalSymbol(identifier))
{
loadInstruction = new Instruction(node.SourceLocation, InstructionType.LoadGlobalVariable, table.GetGlobalSymbol(identifier));
storeInstruction = new Instruction(node.SourceLocation, InstructionType.StoreGlobalVariable, table.GetGlobalSymbol(identifier));
}
else
{
loadInstruction = new Instruction(node.SourceLocation, InstructionType.LoadLocal, table.GetSymbol(identifier));
storeInstruction = new Instruction(node.SourceLocation, InstructionType.StoreLocal, table.GetSymbol(identifier));
}
method.Instructions.Add(loadInstruction);
if (node.UnaryOperation == UnaryOperation.PostDecrement || node.UnaryOperation == UnaryOperation.PostIncrement)
method.Emit(node.SourceLocation, InstructionType.Duplicate);
method.Emit(node.SourceLocation, InstructionType.Push, 1);
method.Emit(node.SourceLocation, InstructionType.BinaryOperation,
node.UnaryOperation == UnaryOperation.PostIncrement || node.UnaryOperation == UnaryOperation.PreIncrement ? (int)BinaryOperation.Addition : (int)BinaryOperation.Subraction);
method.Instructions.Add(storeInstruction);
if (node.UnaryOperation == UnaryOperation.PreDecrement || node.UnaryOperation == UnaryOperation.PreIncrement)
method.Instructions.Add(loadInstruction);
}
break;
case UnaryOperation.Reference:
string variable = ((IdentifierNode)node.Target).Identifier;
method.Emit(node.SourceLocation, InstructionType.Reference, table.GetSymbol(variable));
break;
}
}