UnicodeSetSpanner Class
Definition
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A helper class used to count, replace, and trim CharSequences based on UnicodeSet matches.
[Android.Runtime.Register("android/icu/text/UnicodeSetSpanner", ApiSince=24, DoNotGenerateAcw=true)]
public class UnicodeSetSpanner : Java.Lang.Object[<Android.Runtime.Register("android/icu/text/UnicodeSetSpanner", ApiSince=24, DoNotGenerateAcw=true)>]
type UnicodeSetSpanner = class
inherit Object- Inheritance
- Attributes
Remarks
A helper class used to count, replace, and trim CharSequences based on UnicodeSet matches. An instance is immutable (and thus thread-safe) iff the source UnicodeSet is frozen.
<b>Note:</b> The counting, deletion, and replacement depend on alternating a SpanCondition with its inverse. That is, the code spans, then spans for the inverse, then spans, and so on. For the inverse, the following mapping is used: <ul> <li>UnicodeSet.SpanCondition#SIMPLE → UnicodeSet.SpanCondition#NOT_CONTAINED</li> <li>UnicodeSet.SpanCondition#CONTAINED → UnicodeSet.SpanCondition#NOT_CONTAINED</li> <li>UnicodeSet.SpanCondition#NOT_CONTAINED → UnicodeSet.SpanCondition#SIMPLE</li> </ul> These are actually not complete inverses. However, the alternating works because there are no gaps. For example, with [a{ab}{bc}], you get the following behavior when scanning forward:
<table border="1"> <tr><th>SIMPLE</th><td>xxx[ab]cyyy</td></tr> <tr><th>CONTAINED</th><td>xxx[abc]yyy</td></tr> <tr><th>NOT_CONTAINED</th><td>[xxx]ab[cyyy]</td></tr> </table>
So here is what happens when you alternate:
<table border="1"> <tr><th>start</th><td>|xxxabcyyy</td></tr> <tr><th>NOT_CONTAINED</th><td>xxx|abcyyy</td></tr> <tr><th>CONTAINED</th><td>xxxabc|yyy</td></tr> <tr><th>NOT_CONTAINED</th><td>xxxabcyyy|</td></tr> </table>
The entire string is traversed.
Java documentation for android.icu.text.UnicodeSetSpanner.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Constructors
| Name | Description |
|---|---|
| UnicodeSetSpanner(IntPtr, JniHandleOwnership) |
Creates a managed instance that represents an existing Java object. |
| UnicodeSetSpanner(UnicodeSet) |
Create a spanner from a UnicodeSet. |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniManagedPeerState |
Gets the state flags last assigned by the runtime. (Inherited from JavaObject) |
| JniPeerMembers |
Gets the JNI metadata used to access members of this Java binding. |
| PeerReference |
Gets the JNI object reference for this Java peer. (Inherited from Object) |
| ThresholdClass |
Gets the Java class used for virtual method dispatch. |
| ThresholdType |
Gets the managed type that declares this Java binding. |
| UnicodeSet |
Returns the UnicodeSet used for processing. |
Methods
| Name | Description |
|---|---|
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Construct(JniObjectReference, JniObjectReferenceOptions) |
Delegates construction of this peer to the runtime's value manager. (Inherited from JavaObject) |
| CountIn(ICharSequence, UnicodeSetSpanner+CountMethod, UnicodeSet+SpanCondition) |
Returns the number of matching characters found in a character sequence. |
| CountIn(ICharSequence, UnicodeSetSpanner+CountMethod) |
Returns the number of matching characters found in a character sequence, using SpanCondition.SIMPLE. |
| CountIn(ICharSequence) |
Returns the number of matching characters found in a character sequence, counting by CountMethod. |
| CountIn(String, UnicodeSetSpanner+CountMethod, UnicodeSet+SpanCondition) |
Counts set elements or spans selected by the supplied spanning condition. |
| CountIn(String, UnicodeSetSpanner+CountMethod) |
Counts selected set elements or spans using simple spanning. |
| CountIn(String) |
Returns the number of matching characters found in a character sequence, counting by CountMethod. |
| DeleteFrom(ICharSequence, UnicodeSet+SpanCondition) |
Delete all matching spans in sequence, according to the spanCondition. |
| DeleteFrom(ICharSequence) |
Delete all the matching spans in sequence, using SpanCondition. |
| DeleteFrom(String, UnicodeSet+SpanCondition) |
Removes spans selected by this spanner's set and the supplied condition. |
| DeleteFrom(String) |
Delete all the matching spans in sequence, using SpanCondition. |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| DisposeUnlessReferenced() |
Asks the value manager to dispose this peer unless its mapping retains this same managed instance. (Inherited from JavaObject) |
| Equals(Object) |
Tests whether another managed peer refers to the same Java object. (Inherited from JavaObject) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| JavaFinalize() |
Obsolete.
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| ReplaceFrom(ICharSequence, ICharSequence, UnicodeSetSpanner+CountMethod, UnicodeSet+SpanCondition) |
Replace all matching spans in sequence by replacement, according to the countMethod and spanCondition. |
| ReplaceFrom(ICharSequence, ICharSequence, UnicodeSetSpanner+CountMethod) |
Replace all matching spans in sequence by replacement, according to the CountMethod, using SpanCondition.SIMPLE. |
| ReplaceFrom(ICharSequence, ICharSequence) |
Replace all matching spans in sequence by the replacement, counting by CountMethod. |
| ReplaceFrom(String, String, UnicodeSetSpanner+CountMethod, UnicodeSet+SpanCondition) |
Replaces spans selected by the supplied condition and counting method. |
| ReplaceFrom(String, String, UnicodeSetSpanner+CountMethod) |
Replaces selected spans using simple spanning and the supplied counting method. |
| ReplaceFrom(String, String) |
Replace all matching spans in sequence by the replacement, counting by CountMethod. |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) |
Stores a reference value in the control block without creating a JNI reference copy. (Inherited from JavaObject) |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| Trim(String, UnicodeSetSpanner+TrimOption, UnicodeSet+SpanCondition) |
Trims selected ends of the text using the supplied spanning condition. |
| Trim(String, UnicodeSetSpanner+TrimOption) |
Trims selected ends of the text using simple spanning. |
| Trim(String) |
Returns a trimmed sequence (using CharSequence. |
| TrimFormatted(ICharSequence, UnicodeSetSpanner+TrimOption, UnicodeSet+SpanCondition) |
Returns a trimmed sequence (using CharSequence.subSequence()), that omits matching elements at the start or end of the string, depending on the trimOption and spanCondition. |
| TrimFormatted(ICharSequence, UnicodeSetSpanner+TrimOption) |
Returns a trimmed sequence (using CharSequence.subSequence()), that omits matching elements at the start or end of the string, using the trimOption and SpanCondition.SIMPLE. |
| TrimFormatted(ICharSequence) |
Returns a trimmed sequence (using CharSequence. |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() |
Marks this peer as disposed and calls |
| IJavaPeerable.Finalized() |
Marks this peer as disposed and calls |
| IJavaPeerable.JniObjectReferenceControlBlock |
Gets the native control-block pointer used by this peer. (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) |
Stores the identity hash code supplied by the runtime. (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) |
Replaces the stored managed peer state flags. (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) |
Updates the peer reference and releases a disposed peer's control block when the reference is invalid. (Inherited from JavaObject) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) |
Reuses a compatible managed peer or obtains a wrapper of the requested type. |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |