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//
// DO NOT EDIT. THIS FILE IS GENERATED FROM $SRCDIR/toolkit/components/commandlines/nsICommandLineHandler.idl
//
/// `interface nsICommandLineHandler : nsISupports`
///
/// ```text
/// /**
/// * Handles arguments on the command line of an XUL application.
/// *
/// * Each handler is registered in the category "command-line-handler".
/// * The entries in this category are read in alphabetical order, and each
/// * category value is treated as a service contractid implementing this
/// * interface.
/// *
/// * By convention, handler with ordinary priority should begin with "m".
/// *
/// * Example:
/// * Category Entry Value
/// * command-line-handler c-extensions @mozilla.org/extension-manager/clh;1
/// * command-line-handler m-edit @mozilla.org/composer/clh;1
/// * command-line-handler m-irc @mozilla.org/chatzilla/clh;1
/// * command-line-handler y-final @mozilla.org/browser/clh-final;1
/// *
/// * @note What do we do about localizing helpInfo? Do we make each handler do it,
/// * or provide a generic solution of some sort? Don't freeze this interface
/// * without thinking about this!
/// */
/// ```
///
// The actual type definition for the interface. This struct has methods
// declared on it which will call through its vtable. You never want to pass
// this type around by value, always pass it behind a reference.
#[repr(C)]
pub struct nsICommandLineHandler {
vtable: &'static nsICommandLineHandlerVTable,
/// This field is a phantomdata to ensure that the VTable type and any
/// struct containing it is not safe to send across threads by default, as
/// XPCOM is generally not threadsafe.
///
/// If this type is marked as [rust_sync], there will be explicit `Send` and
/// `Sync` implementations on this type, which will override the inherited
/// negative impls from `Rc`.
__nosync: ::std::marker::PhantomData<::std::rc::Rc<u8>>,
// Make the rust compiler aware that there might be interior mutability
// in what actually implements the interface. This works around UB
// introduced by https://github.com/llvm/llvm-project/commit/01859da84bad95fd51d6a03b08b60c660e642a4f
// that a rust lint would make blatantly obvious, but doesn't exist.
// This prevents optimizations, but those optimizations weren't available
// before rustc switched to LLVM 16, and they now cause problems because
// of the UB.
// Until there's a lint available to find all our UB, it's simpler to
// avoid the UB in the first place, at the cost of preventing optimizations
// in places that don't cause UB. But again, those optimizations weren't
// available before.
__maybe_interior_mutability: ::std::cell::UnsafeCell<[u8; 0]>,
}
// Implementing XpCom for an interface exposes its IID, which allows for easy
// use of the `.query_interface<T>` helper method. This also defines that
// method for nsICommandLineHandler.
unsafe impl XpCom for nsICommandLineHandler {
const IID: nsIID = nsID(0xd4b123df, 0x51ee, 0x48b1,
[0xa6, 0x63, 0x00, 0x21, 0x80, 0xe6, 0x0d, 0x3b]);
}
// We need to implement the RefCounted trait so we can be used with `RefPtr`.
// This trait teaches `RefPtr` how to manage our memory.
unsafe impl RefCounted for nsICommandLineHandler {
#[inline]
unsafe fn addref(&self) {
self.AddRef();
}
#[inline]
unsafe fn release(&self) {
self.Release();
}
}
// This trait is implemented on all types which can be coerced to from nsICommandLineHandler.
// It is used in the implementation of `fn coerce<T>`. We hide it from the
// documentation, because it clutters it up a lot.
#[doc(hidden)]
pub trait nsICommandLineHandlerCoerce {
/// Cheaply cast a value of this type from a `nsICommandLineHandler`.
fn coerce_from(v: &nsICommandLineHandler) -> &Self;
}
// The trivial implementation: We can obviously coerce ourselves to ourselves.
impl nsICommandLineHandlerCoerce for nsICommandLineHandler {
#[inline]
fn coerce_from(v: &nsICommandLineHandler) -> &Self {
v
}
}
impl nsICommandLineHandler {
/// Cast this `nsICommandLineHandler` to one of its base interfaces.
#[inline]
pub fn coerce<T: nsICommandLineHandlerCoerce>(&self) -> &T {
T::coerce_from(self)
}
}
// Every interface struct type implements `Deref` to its base interface. This
// causes methods on the base interfaces to be directly avaliable on the
// object. For example, you can call `.AddRef` or `.QueryInterface` directly
// on any interface which inherits from `nsISupports`.
impl ::std::ops::Deref for nsICommandLineHandler {
type Target = nsISupports;
#[inline]
fn deref(&self) -> &nsISupports {
unsafe {
::std::mem::transmute(self)
}
}
}
// Ensure we can use .coerce() to cast to our base types as well. Any type which
// our base interface can coerce from should be coercable from us as well.
impl<T: nsISupportsCoerce> nsICommandLineHandlerCoerce for T {
#[inline]
fn coerce_from(v: &nsICommandLineHandler) -> &Self {
T::coerce_from(v)
}
}
// This struct represents the interface's VTable. A pointer to a statically
// allocated version of this struct is at the beginning of every nsICommandLineHandler
// object. It contains one pointer field for each method in the interface. In
// the case where we can't generate a binding for a method, we include a void
// pointer.
#[doc(hidden)]
#[repr(C)]
pub struct nsICommandLineHandlerVTable {
/// We need to include the members from the base interface's vtable at the start
/// of the VTable definition.
pub __base: nsISupportsVTable,
/* void handle (in nsICommandLine aCommandLine); */
pub Handle: unsafe extern "system" fn (this: *const nsICommandLineHandler, aCommandLine: *const nsICommandLine) -> ::nserror::nsresult,
/* readonly attribute AUTF8String helpInfo; */
pub GetHelpInfo: unsafe extern "system" fn (this: *const nsICommandLineHandler, aHelpInfo: *mut ::nsstring::nsACString) -> ::nserror::nsresult,
}
// The implementations of the function wrappers which are exposed to rust code.
// Call these methods rather than manually calling through the VTable struct.
impl nsICommandLineHandler {
/// ```text
/// /**
/// * Process a command line. If this handler finds arguments that it
/// * understands, it should perform the appropriate actions (such as opening
/// * a window), and remove the arguments from the command-line array.
/// *
/// * @throw NS_ERROR_ABORT to immediately cease command-line handling
/// * (if this is STATE_INITIAL_LAUNCH, quits the app).
/// * All other exceptions are silently ignored.
/// */
/// ```
///
/// `void handle (in nsICommandLine aCommandLine);`
#[inline]
pub unsafe fn Handle(&self, aCommandLine: *const nsICommandLine) -> ::nserror::nsresult {
((*self.vtable).Handle)(self, aCommandLine)
}
/// ```text
/// /**
/// * When the app is launched with the --help argument, this attribute
/// * is retrieved and displayed to the user (on stdout). The text should
/// * have embedded newlines which wrap at 76 columns, and should include
/// * a newline at the end. By convention, the right column which contains flag
/// * descriptions begins at the 24th character.
/// */
/// ```
///
/// `readonly attribute AUTF8String helpInfo;`
#[inline]
pub unsafe fn GetHelpInfo(&self, aHelpInfo: *mut ::nsstring::nsACString) -> ::nserror::nsresult {
((*self.vtable).GetHelpInfo)(self, aHelpInfo)
}
}