public override void VisitAssign(AssignStatement assign)
{
Argument arg = currentRoutine.GetArgument(assign.Name);
if (arg != null) {
if (arg.RawType.IsByRef) {
Type argType = arg.RawType.GetElementType();
ilGenerator.Emit(OpCodes.Ldarg, arg.Index);
assign.Value.Accept(this);
BoxIfNecessary(assign.Value.RawType, argType);
EmitStind(argType);
}
else {
assign.Value.Accept(this);
BoxIfNecessary(assign.Value.RawType, arg.RawType);
ilGenerator.Emit(OpCodes.Starg, arg.Index);
}
}
else {
LocalVariable local = localVariableStack.GetLocal(assign.Name);
local.EmitStorePrefix(ilGenerator);
assign.Value.Accept(this);
BoxIfNecessary(assign.Value.RawType, local.RawType);
local.EmitStore(ilGenerator);
}
}
public override void VisitAssign(AssignStatement assign)
{
TypeData lhsType;
Argument arg = currentRoutine.GetArgument(assign.Name);
if (arg != null) {
if (arg.NodeType.IsByRef)
lhsType = arg.NodeType.ElementType;
else
lhsType = arg.NodeType;
}
else {
LocalVariable local = localVariableStack.GetLocal(assign.Name);
if (local != null) {
if (local.IsTypecaseVariable) {
report.Error(assign.Location,
"it is illegal " +
"to assign to the typecase variable");
return;
}
lhsType = local.LocalType;
}
else {
Expression self = new SelfExpression(assign.Location);
ModalExpression arg1 =
new ModalExpression(ArgumentMode.In, assign.Value,
assign.Value.Location);
TypedNodeList args = new TypedNodeList(arg1);
assign.Call = new CallExpression(self, assign.Name, args,
assign.Location);
assign.Call.HasValue = false;
assign.Call.Accept(this);
if (assign.Call.NodeType == null)
return;
ParameterInfo[] parameters =
typeManager.GetParameters(assign.Call.Method);
lhsType =
typeManager.GetTypeData(parameters[0].ParameterType);
}
}
if (assign.Value is VoidExpression) {
assign.Value.NodeType = lhsType;
}
else {
// NodeType may be already set by DeclarationStatement
if (assign.Value.NodeType == null)
assign.Value.Accept(this);
if (assign.Value.NodeType == null)
return;
if (!assign.Value.NodeType.IsSubtypeOf(lhsType)) {
report.Error(assign.Location,
"{0} is not a subtype of {1}",
assign.Value.NodeType.FullName,
lhsType.FullName);
return;
}
}
}
public virtual void VisitAssign(AssignStatement assign)
{
}
