java.lang.Character.codePointBefore()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中java.lang.Character.codePointBefore()方法的一些代码示例，展示了Character.codePointBefore()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Character.codePointBefore()方法的具体详情如下：
包路径：java.lang.Character
类名称：Character
方法名：codePointBefore

Character.codePointBefore介绍

[英]Returns the code point that precedes index in the specified sequence of character units. If the unit at index - 1 is a low-surrogate unit, index - 2 is not negative and the unit at index - 2 is a high-surrogate unit, then the supplementary code point represented by the pair is returned; otherwise the charvalue at index - 1 is returned.
[中]返回指定字符单位序列中索引前面的代码点。如果索引-1处的单元是低代理单元，索引-2不是负的，并且索引-2处的单元是高代理单元，则返回由该对表示的补充码点；否则，将返回索引-1处的charvalue。

代码示例

代码示例来源：origin: libgdx/libgdx

/** Retrieves the Unicode code point value that precedes the {@code index}.
 * 
 * @param index the index to the {@code char} code unit within this object.
 * @return the Unicode code point value.
 * @throws IndexOutOfBoundsException if {@code index} is less than 1 or greater than {@link #length()}.
 * @see Character
 * @see Character#codePointBefore(char[], int, int)
 * @since 1.5 */
public int codePointBefore (int index) {
  if (index < 1 || index > length) {
    throw new StringIndexOutOfBoundsException(index);
  }
  return Character.codePointBefore(chars, index);
}

代码示例来源：origin: libgdx/libgdx

/** Retrieves the Unicode code point value that precedes the {@code index}.
 * 
 * @param index the index to the {@code char} code unit within this object.
 * @return the Unicode code point value.
 * @throws IndexOutOfBoundsException if {@code index} is less than 1 or greater than {@link #length()}.
 * @see Character
 * @see Character#codePointBefore(char[], int, int)
 * @since 1.5 */
public int codePointBefore (int index) {
  if (index < 1 || index > length) {
    throw new StringIndexOutOfBoundsException(index);
  }
  return Character.codePointBefore(chars, index);
}

代码示例来源：origin: wildfly/wildfly

public int peekPrev() throws NoSuchElementException {
  if (! hasPrev()) throw new NoSuchElementException();
  return Character.codePointBefore(chars, offs + idx);
}

代码示例来源：origin: wildfly/wildfly

public int peekPrevious() throws NoSuchElementException {
  if (! hasPrevious()) throw new NoSuchElementException();
  return Character.codePointBefore(chars, offs + idx);
}

代码示例来源：origin: robovm/robovm

/**
 * Returns the Unicode code point that precedes the given {@code index}.
 *
 * @throws IndexOutOfBoundsException if {@code index < 1 || index > length()}
 * @see Character#codePointBefore(char[], int, int)
 * @since 1.5
 */
public int codePointBefore(int index) {
  if (index < 1 || index > count) {
    throw indexAndLength(index);
  }
  return Character.codePointBefore(value, offset + index, offset);
}

代码示例来源：origin: robovm/robovm

/**
 * Retrieves the Unicode code point value that precedes the {@code index}.
 *
 * @param index
 *            the index to the {@code char} code unit within this object.
 * @return the Unicode code point value.
 * @throws IndexOutOfBoundsException
 *             if {@code index} is less than 1 or greater than
 *             {@link #length()}.
 * @see Character
 * @see Character#codePointBefore(char[], int, int)
 * @since 1.5
 */
public int codePointBefore(int index) {
  if (index < 1 || index > count) {
    throw indexAndLength(index);
  }
  return Character.codePointBefore(value, index);
}

代码示例来源：origin: KronicDeth/intellij-elixir

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos/*, zzStartRead*/);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + ZZ_CMAP(zzInput) ];

代码示例来源：origin: stanfordnlp/CoreNLP

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];

代码示例来源：origin: stanfordnlp/CoreNLP

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];

代码示例来源：origin: google/re2j

@Override
int context(int pos) {
 pos += start;
 int r1 = pos > start && pos <= end ? Character.codePointBefore(str, pos) : -1;
 int r2 = pos < end ? Character.codePointAt(str, pos) : -1;
 return Utils.emptyOpContext(r1, r2);
}

代码示例来源：origin: oracle/opengrok

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];

代码示例来源：origin: oracle/opengrok

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];

代码示例来源：origin: KronicDeth/intellij-elixir

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos/*, zzStartRead*/);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + ZZ_CMAP(zzInput) ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos/*, zzStartRead*/);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + ZZ_CMAP(zzInput) ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos/*, zzStartRead*/);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + ZZ_CMAP(zzInput) ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos/*, zzStartRead*/);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + ZZ_CMAP(zzInput) ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos/*, zzStartRead*/);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + ZZ_CMAP(zzInput) ];

代码示例来源：origin: oracle/opengrok

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];

代码示例来源：origin: oracle/opengrok

zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];
zzFPos = zzMarkedPos;
while (!zzFinL[zzFPos] || (zzAttrL[zzFState] & 1) != 1) {
 zzInput = Character.codePointBefore(zzBufferL, zzFPos, zzStartRead);
 zzFPos -= Character.charCount(zzInput);
 zzFState = zzTransL[ zzRowMapL[zzFState] + zzCMapL[zzInput] ];

代码示例来源：origin: io.virtdata/virtdata-lib-realer

@Override
public int previousCodePoint() {
  if(pos == 0) {
    return Collation.SENTINEL_CP;
  }
  int c = Character.codePointBefore(s, pos);
  pos -= Character.charCount(c);
  return c;
}

代码示例来源：origin: rkkr/simple-keyboard

public int getCodePointBeforeCursor() {
  final int length = mCommittedTextBeforeComposingText.length();
  if (length < 1) return Constants.NOT_A_CODE;
  return Character.codePointBefore(mCommittedTextBeforeComposingText, length);
}

代码示例来源：origin: MichaelRocks/CallMeMaybe

private int indexOfLastDigit(final int start, final int end) {
  int offset = end;
  while (offset > start) {
   final int codePoint = Character.codePointBefore(this, offset);
   offset -= Character.charCount(codePoint);
   if (Character.isDigit(codePoint)) {
    return offset;
   }
  }
  return -1;
 }
}

代码示例来源：origin: MobiVM/robovm

/**
 * Returns the Unicode code point that precedes the given {@code index}.
 *
 * @throws IndexOutOfBoundsException if {@code index < 1 || index > length()}
 * @see Character#codePointBefore(char[], int, int)
 * @since 1.5
 */
public int codePointBefore(int index) {
  if (index < 1 || index > count) {
    throw indexAndLength(index);
  }
  return Character.codePointBefore(value, offset + index, offset);
}

代码示例来源：origin: ibinti/bugvm

/**
 * Returns the Unicode code point that precedes the given {@code index}.
 *
 * @throws IndexOutOfBoundsException if {@code index < 1 || index > length()}
 * @see Character#codePointBefore(char[], int, int)
 * @since 1.5
 */
public int codePointBefore(int index) {
  if (index < 1 || index > count) {
    throw indexAndLength(index);
  }
  return Character.codePointBefore(value, offset + index, offset);
}

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