Struct xpcom::interfaces::nsIVersionComparator

#[repr(C)]
pub struct nsIVersionComparator { /* fields omitted */ }

interface nsIVersionComparator : nsISupports

/**
 * Version strings are dot-separated sequences of version-parts.
 *
 * A version-part consists of up to four parts, all of which are optional:
 *
 * <number-a><string-b><number-c><string-d (everything else)>
 *
 * A version-part may also consist of a single asterisk "*" which indicates
 * "infinity".
 *
 * Numbers are base-10, and are zero if left out.
 * Strings are compared bytewise.
 *
 * For additional backwards compatibility, if "string-b" is "+" then
 * "number-a" is incremented by 1 and "string-b" becomes "pre".
 *
 * 1.0pre1
 * < 1.0pre2
 *   < 1.0 == 1.0.0 == 1.0.0.0
 *     < 1.1pre == 1.1pre0 == 1.0+
 *       < 1.1pre1a
 *         < 1.1pre1
 *           < 1.1pre10a
 *             < 1.1pre10
 *
 * Although not required by this interface, it is recommended that
 * numbers remain within the limits of a signed char, i.e. -127 to 128.
 */

Methods

impl nsIVersionComparator

pub fn coerce<T: nsIVersionComparatorCoerce>(&self) -> &T

Cast this nsIVersionComparator to one of its base interfaces.

impl nsIVersionComparator

pub unsafe fn Compare(
    &self,
    A: &nsACString,
    B: &nsACString,
    _retval: *mut int32_t
) -> nsresult

/**
   * Compare two version strings
   * @param   A   The first version
   * @param   B   The second version
   * @returns < 0 if A < B
   *          = 0 if A == B
   *          > 0 if A > B
   */

long compare (in ACString A, in ACString B);

Methods from Deref<Target = nsISupports>

pub fn coerce<T: nsISupportsCoerce>(&self) -> &T

Cast this nsISupports to one of its base interfaces.

pub unsafe fn QueryInterface(
    &self,
    uuid: &nsIID,
    result: *mut *mut c_void
) -> nsresult

void QueryInterface (in nsIIDRef uuid, [iid_is (uuid), retval] out nsQIResult result);

pub unsafe fn AddRef(&self) -> nsrefcnt

[noscript,notxpcom] nsrefcnt AddRef ();

pub unsafe fn Release(&self) -> nsrefcnt

[noscript,notxpcom] nsrefcnt Release ();

Trait Implementations

impl XpCom for nsIVersionComparator

const IID: nsIID

IID: nsIID = nsID(3872219658, 60859, 16850, [158, 66, 154, 47, 252, 129, 7, 243])

fn query_interface<T: XpCom>(&self) -> Option<RefPtr<T>>

Perform a QueryInterface call on this object, attempting to dynamically cast it to the requested interface type. Returns Some(RefPtr) if the cast succeeded, and None otherwise.

impl RefCounted for nsIVersionComparator

unsafe fn addref(&self)

Increment the reference count.

unsafe fn release(&self)

Decrement the reference count, potentially freeing backing memory.

impl Deref for nsIVersionComparator

type Target = nsISupports

The resulting type after dereferencing.

fn deref(&self) -> &nsISupports

Dereferences the value.