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optimize surrogate case 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@991608 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Muir 2010-09-01 17:20:57 +00:00
parent 72cb709bd6
commit cf162c2ed5
1 changed files with 2 additions and 4 deletions
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6
lucene/src/java/org/apache/lucene/util/UnicodeUtil.java
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@ -103,7 +103,6 @@ final public class UnicodeUtil {
private static final long UNI_MAX_BMP = 0x0000FFFF; private static final long UNI_MAX_BMP = 0x0000FFFF;
private static final int HALF_BASE = 0x0010000;
private static final long HALF_SHIFT = 10; private static final long HALF_SHIFT = 10;
private static final long HALF_MASK = 0x3FFL; private static final long HALF_MASK = 0x3FFL;
@ -353,9 +352,8 @@ final public class UnicodeUtil {
out[outUpto++] = (char) ch; out[outUpto++] = (char) ch;
} else { } else {
// target is a character in range 0xFFFF - 0x10FFFF // target is a character in range 0xFFFF - 0x10FFFF
final int chHalf = ch - HALF_BASE; out[outUpto++] = (char) ((ch >> HALF_SHIFT) + 0xD7C0 /* UNI_SUR_HIGH_START - 64 */);
out[outUpto++] = (char) ((chHalf >> HALF_SHIFT) + UNI_SUR_HIGH_START); out[outUpto++] = (char) ((ch & HALF_MASK) + UNI_SUR_LOW_START);
out[outUpto++] = (char) ((chHalf & HALF_MASK) + UNI_SUR_LOW_START);
} }
} }
offsets[upto] = outUpto; offsets[upto] = outUpto;