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Small performance improvement and size reduction by recognizing that no

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SQL keywords have less than 2 characters.

FossilOrigin-Name: 6b3d25b7982623ab4b25161aff9ab44778e136069043ab425543597c42c98ae5
This commit is contained in:
drh
2023-06-19 20:54:49 +00:00
parent 1be61ad278
commit 1e24dc987a
4 changed files with 28 additions and 28 deletions
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14
manifest
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@@ -1,5 +1,5 @@
C Fix\slarge\sinteger\sconstants\sso\sthat\sthey\swork\son\solder\sC\scompilers. C Small\sperformance\simprovement\sand\ssize\sreduction\sby\srecognizing\sthat\sno\nSQL\skeywords\shave\sless\sthan\s2\scharacters.
D 2023-06-19T13:09:16.199 D 2023-06-19T20:54:49.547
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -698,7 +698,7 @@ F src/test_windirent.h da2e5b73c32d09905fbdd00f27cd802212a32a58ead882736fe4f5eb7
F src/test_window.c cdae419fdcea5bad6dcd9368c685abdad6deb59e9fc8b84b153de513d394ba3f F src/test_window.c cdae419fdcea5bad6dcd9368c685abdad6deb59e9fc8b84b153de513d394ba3f
F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9 F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9
F src/threads.c 4ae07fa022a3dc7c5beb373cf744a85d3c5c6c3c F src/threads.c 4ae07fa022a3dc7c5beb373cf744a85d3c5c6c3c
F src/tokenize.c 1305797eab3542a0896b552c6e7669c972c1468e11e92b370533c1f37a37082b F src/tokenize.c 0fb405f9adf3f757c26bfc1ae6d58ac5dccbb918917ba9e5ef0e6673a06563d3
F src/treeview.c 1d52fbc4e97161e65858d36e3424ea6e3fc045dd8a679c82b4b9593dc30de3bd F src/treeview.c 1d52fbc4e97161e65858d36e3424ea6e3fc045dd8a679c82b4b9593dc30de3bd
F src/trigger.c ad6ab9452715fa9a8075442e15196022275b414b9141b566af8cdb7a1605f2b0 F src/trigger.c ad6ab9452715fa9a8075442e15196022275b414b9141b566af8cdb7a1605f2b0
F src/update.c cff5ce391a6ffb2125ed7b5d44f3ce1f16af87ad8b9cee1c62bad1ee87d496ed F src/update.c cff5ce391a6ffb2125ed7b5d44f3ce1f16af87ad8b9cee1c62bad1ee87d496ed
@@ -1964,7 +1964,7 @@ F tool/merge-test.tcl de76b62f2de2a92d4c1ca4f976bce0aea6899e0229e250479b229b2a19
F tool/mkautoconfamal.sh f62353eb6c06ab264da027fd4507d09914433dbdcab9cb011cdc18016f1ab3b8 F tool/mkautoconfamal.sh f62353eb6c06ab264da027fd4507d09914433dbdcab9cb011cdc18016f1ab3b8
F tool/mkccode.tcl 86463e68ce9c15d3041610fedd285ce32a5cf7a58fc88b3202b8b76837650dbe x F tool/mkccode.tcl 86463e68ce9c15d3041610fedd285ce32a5cf7a58fc88b3202b8b76837650dbe x
F tool/mkctimec.tcl 38e3db33210a200aae791635125052a643a27aa0619a0debf19aa9c55e1b2dde x F tool/mkctimec.tcl 38e3db33210a200aae791635125052a643a27aa0619a0debf19aa9c55e1b2dde x
F tool/mkkeywordhash.c 9822bd1f58a70e5f84179df3045bba4791df69180e991bec88662703f2e93761 F tool/mkkeywordhash.c b9faa0ae7e14e4dbbcd951cddd786bf46b8a65bb07b129ba8c0cfade723aaffd
F tool/mkmsvcmin.tcl 8897d515ef7f94772322db95a3b6fce6c614d84fe0bdd06ba5a1c786351d5a1d F tool/mkmsvcmin.tcl 8897d515ef7f94772322db95a3b6fce6c614d84fe0bdd06ba5a1c786351d5a1d
F tool/mkopcodec.tcl 33d20791e191df43209b77d37f0ff0904620b28465cca6990cf8d60da61a07ef F tool/mkopcodec.tcl 33d20791e191df43209b77d37f0ff0904620b28465cca6990cf8d60da61a07ef
F tool/mkopcodeh.tcl 769d9e6a8b462323150dc13a8539d6064664b72974f7894befe2491cc73e05cd F tool/mkopcodeh.tcl 769d9e6a8b462323150dc13a8539d6064664b72974f7894befe2491cc73e05cd
@@ -2040,8 +2040,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P bc4d20f362925e4ce5c79f0d7a27a8e9bbac92525bd4cea2ae983798e3f8c37d P 3c94f87806a8b408d8204fc7deec16d01c085ee199ff21a1f20b6346ce816cfe
R 4f624e24f6c2ab94a4c616a97b2a4cbc R 15f717adc06c57cdc873049afed42495
U drh U drh
Z d7b617717e187efbbfc027ed7ee0c3f2 Z 6f59dca549ea3d00f113d41a45951fb1
# Remove this line to create a well-formed Fossil manifest. # Remove this line to create a well-formed Fossil manifest.

2
manifest.uuid
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@@ -1 +1 @@
3c94f87806a8b408d8204fc7deec16d01c085ee199ff21a1f20b6346ce816cfe 6b3d25b7982623ab4b25161aff9ab44778e136069043ab425543597c42c98ae5

3
src/tokenize.c
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@@ -505,7 +505,8 @@ int sqlite3GetToken(const unsigned char *z, int *tokenType){
return i; return i;
} }
case CC_KYWD0: { case CC_KYWD0: {
for(i=1; aiClass[z[i]]<=CC_KYWD; i++){} if( aiClass[z[1]]>CC_KYWD ){ i = 1; break; }
for(i=2; aiClass[z[i]]<=CC_KYWD; i++){}
if( IdChar(z[i]) ){ if( IdChar(z[i]) ){
/* This token started out using characters that can appear in keywords, /* This token started out using characters that can appear in keywords,
** but z[i] is a character not allowed within keywords, so this must ** but z[i] is a character not allowed within keywords, so this must

5
tool/mkkeywordhash.c
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@@ -665,7 +665,7 @@ int main(int argc, char **argv){
printf("static int keywordCode(const char *z, int n, int *pType){\n"); printf("static int keywordCode(const char *z, int n, int *pType){\n");
printf(" int i, j;\n"); printf(" int i, j;\n");
printf(" const char *zKW;\n"); printf(" const char *zKW;\n");
printf(" if( n>=2 ){\n"); printf(" assert( n>=2 );\n");
printf(" i = ((charMap(z[0])*%d) %c", HASH_C0, HASH_CC); printf(" i = ((charMap(z[0])*%d) %c", HASH_C0, HASH_CC);
printf(" (charMap(z[n-1])*%d) %c", HASH_C1, HASH_CC); printf(" (charMap(z[n-1])*%d) %c", HASH_C1, HASH_CC);
printf(" n*%d) %% %d;\n", HASH_C2, bestSize); printf(" n*%d) %% %d;\n", HASH_C2, bestSize);
@@ -692,12 +692,11 @@ int main(int argc, char **argv){
printf(" *pType = aKWCode[i];\n"); printf(" *pType = aKWCode[i];\n");
printf(" break;\n"); printf(" break;\n");
printf(" }\n"); printf(" }\n");
printf(" }\n");
printf(" return n;\n"); printf(" return n;\n");
printf("}\n"); printf("}\n");
printf("int sqlite3KeywordCode(const unsigned char *z, int n){\n"); printf("int sqlite3KeywordCode(const unsigned char *z, int n){\n");
printf(" int id = TK_ID;\n"); printf(" int id = TK_ID;\n");
printf(" keywordCode((char*)z, n, &id);\n"); printf(" if( n>=2 ) keywordCode((char*)z, n, &id);\n");
printf(" return id;\n"); printf(" return id;\n");
printf("}\n"); printf("}\n");
printf("#define SQLITE_N_KEYWORD %d\n", nKeyword); printf("#define SQLITE_N_KEYWORD %d\n", nKeyword);