void DoEmitStringSwitch (LocalTemporary value, EmitContext ec)
{
Label l_initialized = ec.DefineLabel ();
//
// Skip initialization when value is null
//
value.EmitBranchable (ec, null_target, false);
//
// Check if string dictionary is initialized and initialize
//
switch_cache_field.EmitBranchable (ec, l_initialized, true);
string_dictionary.EmitStatement (ec);
ec.MarkLabel (l_initialized);
LocalTemporary string_switch_variable = new LocalTemporary (TypeManager.int32_type);
ResolveContext rc = new ResolveContext (ec.MemberContext);
if (TypeManager.generic_ienumerable_type != null) {
Arguments get_value_args = new Arguments (2);
get_value_args.Add (new Argument (value));
get_value_args.Add (new Argument (string_switch_variable, Argument.AType.Out));
Expression get_item = new Invocation (new MemberAccess (switch_cache_field, "TryGetValue", loc), get_value_args).Resolve (rc);
if (get_item == null)
return;
//
// A value was not found, go to default case
//
get_item.EmitBranchable (ec, default_target, false);
} else {
Arguments get_value_args = new Arguments (1);
get_value_args.Add (new Argument (value));
Expression get_item = new ElementAccess (switch_cache_field, get_value_args, loc).Resolve (rc);
if (get_item == null)
return;
LocalTemporary get_item_object = new LocalTemporary (TypeManager.object_type);
get_item_object.EmitAssign (ec, get_item, true, false);
ec.Emit (OpCodes.Brfalse, default_target);
ExpressionStatement get_item_int = (ExpressionStatement) new SimpleAssign (string_switch_variable,
new Cast (new TypeExpression (TypeManager.int32_type, loc), get_item_object, loc)).Resolve (rc);
get_item_int.EmitStatement (ec);
get_item_object.Release (ec);
}
TableSwitchEmit (ec, string_switch_variable);
string_switch_variable.Release (ec);
}