protected override List <AssemblyElement> VisitCompoundAssignment(CompoundAssignmentNode node)
{
List <AssemblyElement> instructions = new List <AssemblyElement>();
instructions.AddRange(Visit(node.RightSideNode));
instructions.AddRange(Visit(node.LeftSideNode));
switch (node.Operator)
{
case CompoundAssignmentOperator.Add:
instructions.Add(new AssignAdd());
break;
case CompoundAssignmentOperator.Sub:
instructions.Add(new AssignSubtract());
break;
case CompoundAssignmentOperator.Mult:
instructions.Add(new AssignMultiply());
break;
case CompoundAssignmentOperator.Div:
instructions.Add(new AssignDivide());
break;
}
return(instructions);
}
public override DynValue Visit(CompoundAssignmentNode compoundAssignmentNode)
{
DynValue val;
if (CallStack.Count > 0)
{
var stackTop = CallStack.Peek();
val = Visit(compoundAssignmentNode.Right);
if (stackTop.ParameterScope.ContainsKey(compoundAssignmentNode.Variable.Name))
{
stackTop.ParameterScope[compoundAssignmentNode.Variable.Name] = HandleCompoundOperation(
stackTop.ParameterScope[compoundAssignmentNode.Variable.Name],
val,
compoundAssignmentNode.Operation
);
return(DynValue.Zero);
}
else if (stackTop.LocalVariableScope.ContainsKey(compoundAssignmentNode.Variable.Name))
{
stackTop.LocalVariableScope[compoundAssignmentNode.Variable.Name] = HandleCompoundOperation(
stackTop.LocalVariableScope[compoundAssignmentNode.Variable.Name],
val,
compoundAssignmentNode.Operation
);
return(DynValue.Zero);
}
}
if (!Environment.Globals.ContainsKey(compoundAssignmentNode.Variable.Name))
{
throw new RuntimeException($"Variable '{compoundAssignmentNode.Variable.Name}' was not found in current scope.", null);
}
val = Visit(compoundAssignmentNode.Right);
Environment.Globals[compoundAssignmentNode.Variable.Name] = HandleCompoundOperation(
Environment.Globals[compoundAssignmentNode.Variable.Name],
val,
compoundAssignmentNode.Operation
);
return(DynValue.Zero);
}
public abstract DynValue Visit(CompoundAssignmentNode compoundAssignmentNode);
