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Fix a performance regression in JSON associated with generating small

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snippets of JSON from a larger JSON string.

FossilOrigin-Name: 837f2907e10b026f6db1ca2d44b4bf60a6f069bf534bf369ad9b5c513cb0c6e4
This commit is contained in:
drh
2023-07-27 00:21:59 +00:00
parent e94e132994
commit 93853a4846
3 changed files with 19 additions and 13 deletions
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18
src/json.c
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@@ -563,12 +563,18 @@ static void jsonAppendValue(
** The JSON string is reset.
*/
static void jsonResult(JsonString *p){
if( p->bErr==0 && jsonForceRCStr(p) ){
sqlite3RCStrRef(p->zBuf);
sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed,
(void(*)(void*))sqlite3RCStrUnref,
SQLITE_UTF8);
}else if( p->bErr==1 ){
if( p->bErr==0 ){
if( p->bStatic ){
sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed,
SQLITE_TRANSIENT, SQLITE_UTF8);
}else if( jsonForceRCStr(p) ){
sqlite3RCStrRef(p->zBuf);
sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed,
(void(*)(void*))sqlite3RCStrUnref,
SQLITE_UTF8);
}
}
if( p->bErr==1 ){
sqlite3_result_error_nomem(p->pCtx);
}
jsonReset(p);