public void VisitBorrowUnaryOp(BorrowUnaryOpNode node)
{
IAddressableNode addressableRhs = (IAddressableNode)node.RHS;
AddressOfVisitor addressOfVisitor = new AddressOfVisitor(_functionStackLayout, _semanticModule, _structLayoutManager);
addressableRhs.AcceptAddressableVisitor(addressOfVisitor);
int startAddr = _builder.AddInstruction(OpCode.ADDRESSOF, addressOfVisitor.AbsoluteStackAddress);
_builder.AddDebugSymbol(startAddr, node);
}
public LValue?Resolve(IAddressableNode node)
{
_path.Clear();
node.AcceptAddressableVisitor(this);
if (_path.Count == 0)
{
return(null);
}
return(new LValue(_path));
}
public void VisitAccess(AccessNode node)
{
if (!node.IsAddressable())
{
return;
}
IAddressableNode addressableLhs = (IAddressableNode)node.Lhs;
addressableLhs.AcceptAddressableVisitor(this);
_path.Add(node.Rhs);
}
private void ValidateUsage(IAddressableNode addressableNode)
{
LValue?lValue = _lValueResolver.Resolve(addressableNode);
if (lValue == null)
{
return;
}
if (lValue.Covers(_targetLValue) && !_isTargetCurrentlyAssigned)
{
_errors.AddError("Cannot use before assignment", addressableNode);
}
}
public void VisitAccess(AccessNode node)
{
IAddressableNode addressableLhs = (IAddressableNode)node.Lhs;
addressableLhs.AcceptAddressableVisitor(this);
StructType structType = (StructType)_module.ExpressionResultTypes[node.Lhs];
StructLayout layout = _structLayoutManager.GetLayout(structType);
if (!layout.MemberOffsets.TryGetValue(node.Rhs, out int offset))
{
throw new InvalidOperationException();
}
AbsoluteStackAddress += offset;
}
public void VisitAccess(AccessNode node)
{
IAddressableNode addressableNode = (IAddressableNode)node.Lhs;
addressableNode.AcceptAddressableVisitor(this);
StructType structType = (StructType)_genContext.SemanticModule.ExpressionResultTypes[node.Lhs];
StructLayout layout = _genContext.StructLayoutManager.GetLayout(structType);
if (!layout.MemberOffsets.TryGetValue(node.Rhs, out int index))
{
throw new InvalidOperationException();
}
AssignmentWritePointer = _builder.BuildStructGEP(AssignmentWritePointer, (uint)index);
}
public AssignmentNode(IAddressableNode lhs, IExpressionNode rhs)
{
Lhs = lhs;
Rhs = rhs;
}
