Small performance increase and size reduction in the implementation of the

LIKE and GLOB operators.

FossilOrigin-Name: f97626f921dafe596b615a168ef31987f4a1c0b52956443e1a5c1148b49cab74
This commit is contained in:
drh 2019-04-30 11:54:36 +00:00
parent b70b0df8eb
commit cf83323936
3 changed files with 9 additions and 11 deletions

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@ -1,5 +1,5 @@
C Slightly\ssmaller\sand\sfaster\simplementation\sof\sthe\sOP_MakeRecord\sopcode.
D 2019-04-30T01:08:42.471
C Small\sperformance\sincrease\sand\ssize\sreduction\sin\sthe\simplementation\sof\sthe\nLIKE\sand\sGLOB\soperators.
D 2019-04-30T11:54:36.560
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -474,7 +474,7 @@ F src/delete.c d08c9e01a2664afd12edcfa3a9c6578517e8ff8735f35509582693adbe0edeaf
F src/expr.c f65db06a0fcff760cadfb79d579a41e3eb7eff38848d5d6359137822f4fa2ec9
F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
F src/fkey.c 0e14d4bef8eac2d87bbd517e492d9084c65008d117823f8922c5e7b2b599bd33
F src/func.c 2ccf4ae12430b1ae7096be5f0675887e1bd0732828af0ac0f7496339b7c6edee
F src/func.c ac05ea6b47b407586ad2c0878c4c81c3acb08b67ecf86648830f91f40325ae37
F src/global.c 0dea3065ea72a65ae941559b6686aad6516d4913e76fa4f79a95ff7787f624ec
F src/hash.c 8d7dda241d0ebdafb6ffdeda3149a412d7df75102cecfc1021c98d6219823b19
F src/hash.h 9d56a9079d523b648774c1784b74b89bd93fac7b365210157482e4319a468f38
@ -1821,7 +1821,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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R 9a779d76ef4cdc16bf512841a59b2ab4
U drh
Z b866775507213d2cd189ff81277fbb67
Z 487e34d77ec73a391deebf3b3507c69b

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@ -1 +1 @@
3bdce7ef1a6bb03affe978243fec603d5a55c071aa6d87c469a3c199d23f3b5e
f97626f921dafe596b615a168ef31987f4a1c0b52956443e1a5c1148b49cab74

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@ -843,8 +843,6 @@ static void likeFunc(
return;
}
#endif
zB = sqlite3_value_text(argv[0]);
zA = sqlite3_value_text(argv[1]);
/* Limit the length of the LIKE or GLOB pattern to avoid problems
** of deep recursion and N*N behavior in patternCompare().
@ -856,8 +854,6 @@ static void likeFunc(
sqlite3_result_error(context, "LIKE or GLOB pattern too complex", -1);
return;
}
assert( zB==sqlite3_value_text(argv[0]) ); /* Encoding did not change */
if( argc==3 ){
/* The escape character string must consist of a single UTF-8 character.
** Otherwise, return an error.
@ -873,6 +869,8 @@ static void likeFunc(
}else{
escape = pInfo->matchSet;
}
zB = sqlite3_value_text(argv[0]);
zA = sqlite3_value_text(argv[1]);
if( zA && zB ){
#ifdef SQLITE_TEST
sqlite3_like_count++;