protected virtual Statement CreateDisposeCall (BlockContext bc, LocalVariable lv)
{
var lvr = lv.CreateReferenceExpression (bc, lv.Location);
var type = lv.Type;
var loc = lv.Location;
if (TypeManager.void_dispose_void == null) {
TypeManager.void_dispose_void = TypeManager.GetPredefinedMethod (
TypeManager.idisposable_type, "Dispose", loc, TypeSpec.EmptyTypes);
}
var dispose_mg = MethodGroupExpr.CreatePredefined (TypeManager.void_dispose_void, TypeManager.idisposable_type, loc);
dispose_mg.InstanceExpression = TypeManager.IsNullableType (type) ?
new Cast (new TypeExpression (TypeManager.idisposable_type, loc), lvr, loc).Resolve (bc) :
lvr;
Statement dispose = new StatementExpression (new Invocation (dispose_mg, null));
// Add conditional call when disposing possible null variable
if (!type.IsStruct || TypeManager.IsNullableType (type))
dispose = new If (new Binary (Binary.Operator.Inequality, lvr, new NullLiteral (loc), loc), dispose, loc);
return dispose;
}