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optimize JSONReaderASCII::readString

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高铁 2025-02-25 18:35:02 +08:00
parent df76155604
commit d11f0ef178
1 changed files with 25 additions and 8 deletions
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33
core/src/main/java/com/alibaba/fastjson2/JSONReaderASCII.java
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@ -1428,7 +1428,18 @@ final class JSONReaderASCII
int offset = this.offset;
final int start = offset, end = this.end;
int index = IOUtils.indexOfQuote(bytes, ch, offset, end);
int index;
if (INDEX_OF_CHAR_LATIN1 == null) {
index = IOUtils.indexOfQuoteV(bytes, ch, offset, end);
} else {
try {
index = (int) INDEX_OF_CHAR_LATIN1.invokeExact(bytes, ch, offset, end);
}
catch (Throwable e) {
throw new JSONException(e.getMessage());
}
}
if (index == -1) {
throw error("invalid escape character EOI");
}
@ -1471,17 +1482,23 @@ final class JSONReaderASCII
private int indexOfSlash(byte[] bytes, int offset, int end) {
int slashIndex = nextEscapeIndex;
if (slashIndex == ESCAPE_INDEX_NOT_SET || (slashIndex != -1 && slashIndex < offset)) {
nextEscapeIndex = slashIndex = IOUtils.indexOfSlash(bytes, offset, end);
if (str != null) {
slashIndex = str.indexOf('\\', offset);
} else if (INDEX_OF_CHAR_LATIN1 == null) {
slashIndex = IOUtils.indexOfSlashV(bytes, offset, end);
} else {
try {
slashIndex = (int) INDEX_OF_CHAR_LATIN1.invokeExact(bytes, (int) '\\', offset, end);
}
catch (Throwable e) {
throw new JSONException(e.getMessage());
}
}
nextEscapeIndex = slashIndex;
}
return slashIndex;
}
private static String subString(byte[] bytes, int start, int index) {
return STRING_CREATOR_JDK11 != null
? STRING_CREATOR_JDK11.apply(Arrays.copyOfRange(bytes, start, index), LATIN1)
: new String(bytes, start, index - start, StandardCharsets.ISO_8859_1);
}
private String readEscaped(byte[] bytes, int offset, int start, int end, int valueLength, int quote) {
for (;;) {
if (offset >= end) {