com.phloc.commons.i18n.ICodepointIterator Maven / Gradle / Ivy
/**
* Copyright (C) 2006-2015 phloc systems
* http://www.phloc.com
* office[at]phloc[dot]com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.phloc.commons.i18n;
import java.util.Iterator;
import javax.annotation.CheckForSigned;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
* BAse interface for codepoint iterators
*
* @author Philip Helger
*/
public interface ICodepointIterator extends Iterator
{
/**
* @return true if there are codepoints remaining
*/
@Override
boolean hasNext ();
/**
* @return the final index position
*/
@CheckForSigned
int lastPosition ();
/**
* @return the next chars. If the codepoint is not supplemental, the char
* array will have a single member. If the codepoint is supplemental,
* the char array will have two members, representing the high and low
* surrogate chars
*/
@Nullable
char [] nextChars ();
/**
* @return Peek the next chars in the iterator. If the codepoint is not
* supplemental, the char array will have a single member. If the
* codepoint is supplemental, the char array will have two members,
* representing the high and low surrogate chars
*/
@Nullable
char [] peekChars ();
/**
* @return the next codepoint
*/
@Override
@Nullable
Codepoint next ();
/**
* @return Peek the next codepoint
*/
@Nullable
Codepoint peek ();
/**
* @param index
* The desired index
* @return Peek the specified codepoint
*/
@Nullable
Codepoint peek (@Nonnegative int index);
/**
* @param n
* The new iterator position Set the iterator position
*/
void position (@Nonnegative int n);
/**
* @return the iterator position
*/
@Nonnegative
int position ();
/**
* @return the iterator limit
*/
@Nonnegative
int limit ();
/**
* @return the remaining iterator size
*/
@Nonnegative
int remaining ();
/**
* @param index
* The index in question
* @return true if the char at the specified index is a high
* surrogate
*/
boolean isHigh (@Nonnegative int index);
/**
* @param index
* The index in question
* @return true if the char at the specified index is a low
* surrogate
*/
boolean isLow (@Nonnegative int index);
@Nonnull
CodepointIteratorRestricted restrict (@Nonnull ICodepointFilter aFilter);
@Nonnull
CodepointIteratorRestricted restrict (@Nonnull ICodepointFilter aFilter, boolean bScanning);
@Nonnull
CodepointIteratorRestricted restrict (@Nonnull ICodepointFilter aFilter, boolean bScanning, boolean bInvert);
}