bool CDFFDUseStruct::check_data()
{
// Get values from the controls and validate them
UpdateData();
// Make sure name is given unless the container is a FOR (whence sub-elements are accessed via array index)
if (name_.IsEmpty() && parent_type_ != CHexEditDoc::DF_FORV && parent_type_ != CHexEditDoc::DF_FORF)
{
TaskMessageBox("No Name", "Please enter a name for this element");
ctl_name_.SetFocus();
return false;
}
if (!name_.IsEmpty() && !valid_id(name_))
{
TaskMessageBox("Invalid STRUCT Name", "Please use alphanumeric characters (or "
"underscores) and begin the name with an alphabetic character.");
ctl_name_.SetFocus();
return false;
}
if (name_.CompareNoCase("true") == 0 ||
name_.CompareNoCase("false") == 0 ||
name_.CompareNoCase("end") == 0 ||
expr_eval::func_token(name_) != expr_eval::TOK_NONE)
{
TaskMessageBox("Reserved Name", name_ + " is reserved for internal use. Please choose another name.");
ctl_name_.SetFocus();
return false;
}
if (struct_.IsEmpty())
{
TaskMessageBox("No Defined Struct", "Please select a defined struct for this element");
ctl_struct_.SetFocus();
return false;
}
else if (!valid_id(struct_))
{
TaskMessageBox("Invalid Defined Struct Name", "Please use alphanumeric characters "
"(or underscore) and start with a alphabetic character.");
ctl_name_.SetFocus();
return false;
}
// We can only have an empty name if parent is FOR in which case there are no siblings
ASSERT(!name_.IsEmpty() || pelt_->GetParent().GetNumChildren() == 1);
// Check that the name is not the same as any siblings
CXmlTree::CElt ee;
// First find the actual element whose siblings we want to check (an IF takes the name of its child)
for (ee = *pelt_; ee.GetParent().GetName() == "if" || ee.GetParent().GetName() == "jump"; ee = ee.GetParent())
; // empty loop body
// Check that older siblings don't have the same name
for (ee--; !ee.IsEmpty(); ee--)
{
CXmlTree::CElt ee2;
for (ee2 = ee; !ee2.IsEmpty() && (ee2.GetName() == "if" || ee2.GetName() == "jump"); ee2 = ee2.GetFirstChild())
; // nothing here
if (!ee2.IsEmpty() && ee2.GetAttr("name") == name_)
{
TaskMessageBox("Name in use", name_ + " has a sibling with the same name.\n\n"
"It is not be possible to differentiate between two elements "
"with the same name at the same level (eg, in expressions).");
ctl_name_.SetFocus();
return false;
}
}
for (ee = *pelt_; ee.GetParent().GetName() == "if" || ee.GetParent().GetName() == "jump"; ee = ee.GetParent())
; // empty loop body
// Check that younger siblings don't have the same name
for (++ee; !ee.IsEmpty(); ++ee)
{
CXmlTree::CElt ee2;
for (ee2 = ee; !ee2.IsEmpty() && (ee2.GetName() == "if" || ee2.GetName() == "jump"); ee2 = ee2.GetFirstChild())
; // nothing here
if (!ee2.IsEmpty() && ee2.GetAttr("name") == name_)
{
TaskMessageBox("Name in use", name_ + " has a sibling with the same name.\n\n"
"It is not be possible to differentiate between two elements "
"with the same name at the same level (eg, in expressions).");
ctl_name_.SetFocus();
return false;
}
}
return true;
}
// Make a whole menu system that shows all the variables that can be accessed
// by an element in an expression.
// Returns a pointer to a CMenu that must be destroyed and freed, unless NULL
// is returned in which case no variables were found.
CMenu *make_var_menu_tree(const CXmlTree::CElt ¤t_elt, bool this_too /*=false*/, bool file_too /*=false*/)
{
int item_no = 1;
// Get sibling items
CMenu *retval = make_menu(current_elt, item_no);
// Add "this" if required
if (this_too)
{
ASSERT(current_elt.GetName() != "if" && current_elt.GetName() != "switch");
ASSERT(current_elt.GetNumChildren() <= 1);
ASSERT(prev_defined.size() == 0); // Make sure the list is cleared
if (current_elt.GetNumChildren() > 0)
add_menu_items(retval, item_no, current_elt.GetFirstChild(), _T("this"));
else
retval->AppendMenu(MF_ENABLED, item_no++, _T("this"));
prev_defined.clear();
}
// Added in 3.5 - ability to use file values (cursor, mark, eof) in expressions
if (file_too)
{
CMenu * submenu = new CMenu;
submenu->CreatePopupMenu();
submenu->AppendMenu(MF_ENABLED, item_no++, _T("cursor"));
submenu->AppendMenu(MF_ENABLED, item_no++, _T("mark"));
submenu->AppendMenu(MF_ENABLED, item_no++, _T("eof"));
retval->AppendMenu(MF_POPUP, (UINT)submenu->m_hMenu, _T("From File"));
}
// Now check each ancestor in turn and add sub-menu (if not empty)
CXmlTree::CElt ee; // Node of ancestor (starting with parent)
int ii; // Keep track of which ancestor (1 = parent)
for (ee = current_elt.GetParent(), ii = 1;
ee.GetName() != "binary_file_format";
ee = ee.GetParent(), ++ii )
{
CMenu *submenu = make_menu(ee, item_no);
if (submenu->GetMenuItemCount() > 0)
{
// Add this menu as a submenu (popup)
CString submenu_name;
if (ii == 1)
submenu_name = "Parent siblings";
else if (ii == 2)
submenu_name = "Grandparent siblings";
else
submenu_name.Format("Ancestor [%d] siblings", ii);
retval->AppendMenu(MF_POPUP, (UINT)submenu->m_hMenu, submenu_name);
}
else
submenu->DestroyMenu();
delete submenu;
}
// If we added nothing just put a dummy (disabled) menu item in there
if (retval->GetMenuItemCount() == 0)
retval->AppendMenu(MF_GRAYED, -1, _T("No values available"));
return retval;
}