public Item Compile(ByteCodeGenerator generator)
{
//TODO
var item = new ExpressionCompiler(node.Child.Child).Compile(generator);
if (node is UnaryNode.PlusNode)
{
return item.Load();
}
if (node is UnaryNode.MinusNode)
{
throw new NotImplementedException();
}
if (node is UnaryNode.PreIncNode)
{
return CompilePreOp(generator, item);
}
if (node is UnaryNode.PreDecNode)
{
return CompilePreOp(generator, item);
}
if (node is UnaryNode.PostIncNode)
{
return CompilePostOp(generator, item);
}
if (node is UnaryNode.PostDecNode)
{
return CompilePostOp(generator, item);
}
throw new NotImplementedException();
}
public static void AppendStrings(ByteCodeGenerator generator, DefinedType sb, ExpressionNode node)
{
if (node is AdditiveNode)
{
var addNode = node as AdditiveNode;
generator.Kill();
var addType = new AdditiveCompiler(addNode).Compile(generator).Type;
generator.Revive();
if (addType.Name == BuiltinTypes.String.Name)
{
AppendStrings(generator, sb, addNode.LeftChild.Child);
AppendStrings(generator, sb, addNode.RightChild.Child);
return;
}
}
var item = new ExpressionCompiler(node).Compile(generator);
var appendMethod = sb.FindMethod(generator, "append", new List<Type> { item.Type });
if (appendMethod == null) throw new InvalidOperationException();
item.Load();
new MemberItem(generator, appendMethod, false).Invoke();
}
private Item CompileAssignOp(ByteCodeGenerator generator)
{
var lType = new TranslateNode { Child = node.Left }.GetType(generator, false, true);
var rType = node.Right.GetType(generator, false, true);
var type = lType.FindCommonType(rType);
Item lhs;
if (lType.Name == BuiltinTypes.String.Name)
{
var sb = BuiltinTypes.StringBuilder;
AdditiveCompiler.MakeStringBuffer(generator, sb);
lhs = new ExpressionCompiler(node.Left).Compile(generator);
if (lhs.Width() > 0)
{
generator.Emit(OpCodeValue.dup_x1 + (byte)(3 * (lhs.Width() - 1)));
}
lhs.Load();
AdditiveCompiler.AppendStrings(generator, sb, node.Left);
AdditiveCompiler.AppendStrings(generator, sb, node.Right.Child);
AdditiveCompiler.BufferToString(generator, sb);
}
else
{
lhs = new ExpressionCompiler(node.Left).Compile(generator);
lhs.Duplicate();
lhs.Coerce(type).Load();
new TranslationCompiler(node.Right, type).Compile(generator).Load();
if (node is AssignmentNode.AddAssignNode)
{
AdditiveCompiler.CompileAddition(generator, type);
}
else if (node is AssignmentNode.MinusAssignNode)
{
AdditiveCompiler.CompileSubtraction(generator, type);
}
else
{
throw new NotImplementedException();
}
}
return new AssignItem(generator, lhs);
}
