public void Visit(ClassNode node)
{
string cclass;
cclass = VariableManager.CurrentClass = node.TypeClass.Text;
Code.Add(new InheritCodeLine(node.TypeClass.Text, Scope.GetType(node.TypeClass.Text).Parent.Text));
//VirtualTable.DefineClass(VariableManager.CurrentClass);
int self = VariableManager.VariableCounter = 0;
VariableManager.IncrementVariableCounter();
VariableManager.PushVariableCounter();
List <AttributeNode> attributes = new List <AttributeNode>();
List <MethodNode> methods = new List <MethodNode>();
foreach (var f in node.FeatureNodes)
{
if (f is AttributeNode)
{
attributes.Add((AttributeNode)f);
}
else
{
methods.Add((MethodNode)f);
}
}
foreach (var method in methods)
{
method.Accept(this);
}
//begin constructor function
Code.Add(new LabelCodeLine(VariableManager.CurrentClass, "constructor"));
Code.Add(new ParamCodeLine(self));
//calling first the parent constructor method
if (VariableManager.CurrentClass != "Object")
{
Code.Add(new PushParamCodeLine(self));
LabelCodeLine label = new LabelCodeLine(node.TypeInherit.Text, "constructor");
Code.Add(new CallLabelCodeLine(label));
Code.Add(new PopParamCodeLine(1));
}
foreach (var method in methods)
{
(string, string)label = ClassManager.GetDefinition(node.TypeClass.Text, method.Id.Text);
Code.Add(new CommentCodeLine("set method: " + label.Item1 + "." + label.Item2));
Code.Add(new AssignmentLabelToMemoryCodeLine(self, new LabelCodeLine(label.Item1, label.Item2), ClassManager.GetOffset(node.TypeClass.Text, method.Id.Text)));
}
foreach (var attr in attributes)
{
VariableManager.PushVariableCounter();
attr.Accept(this);
VariableManager.PopVariableCounter();
Code.Add(new CommentCodeLine("set attribute: " + attr.Formal.Id.Text));
Code.Add(new AssignmentVariableToMemoryCodeLine(self, VariableManager.PeekVariableCounter(), ClassManager.GetOffset(node.TypeClass.Text, attr.Formal.Id.Text)));
}
Code.Add(new CommentCodeLine("set class name: " + node.TypeClass.Text));
Code.Add(new AssignmentStringToMemoryCodeLine(0, node.TypeClass.Text, 0));
Code.Add(new CommentCodeLine("set class size: " + ClassManager.GetSizeClass(node.TypeClass.Text) + " words"));
Code.Add(new AssignmentConstantToMemoryCodeLine(0, ClassManager.GetSizeClass(node.TypeClass.Text), 1));
Code.Add(new CommentCodeLine("set class generation label"));
Code.Add(new AssignmentLabelToMemoryCodeLine(0, new LabelCodeLine("_class", node.TypeClass.Text), 2));
Code.Add(new ReturnCodeLine(-1));
VariableManager.PopVariableCounter();
}
public ConditionalJumpCodeLine(int conditional_var, LabelCodeLine label)
{
Label = label;
ConditionalVar = conditional_var;
}
public CallLabelCodeLine(LabelCodeLine method, int result_variable = -1)
{
Method = method;
Result = result_variable;
}
public GotoJumpCodeLine(LabelCodeLine label)
{
Label = label;
}