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Overview
| Comment: | In Lemon, if a non-terminal has the same type as a terminal, then reuse the terminal type in the YYMINORTYPE union for the non-terminal. This gives better table compression. (CVS 5334) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
5c9cc22cd8e9bec3d8622d2c35442328 |
| User & Date: | drh 2008-07-01 16:34:50 |
Context
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2008-07-01
| ||
| 17:13 | In lemon: coalesce identical destructors. (CVS 5335) check-in: 3447086c user: drh tags: trunk | |
| 16:34 | In Lemon, if a non-terminal has the same type as a terminal, then reuse the terminal type in the YYMINORTYPE union for the non-terminal. This gives better table compression. (CVS 5334) check-in: 5c9cc22c user: drh tags: trunk | |
| 16:05 | Fix a memory leak to do with the recent UNION ALL sub-select optimization. (CVS 5333) check-in: 6ee71f4d user: danielk1977 tags: trunk | |
Changes
Changes to tool/lemon.c.
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cp = sp->datatype;
if( cp==0 ) cp = lemp->vartype;
j = 0;
while( isspace(*cp) ) cp++;
while( *cp ) stddt[j++] = *cp++;
while( j>0 && isspace(stddt[j-1]) ) j--;
stddt[j] = 0;
hash = 0;
for(j=0; stddt[j]; j++){
hash = hash*53 + stddt[j];
}
hash = (hash & 0x7fffffff)%arraysize;
while( types[hash] ){
if( strcmp(types[hash],stddt)==0 ){
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> > > > |
3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 |
cp = sp->datatype;
if( cp==0 ) cp = lemp->vartype;
j = 0;
while( isspace(*cp) ) cp++;
while( *cp ) stddt[j++] = *cp++;
while( j>0 && isspace(stddt[j-1]) ) j--;
stddt[j] = 0;
if( strcmp(stddt, lemp->tokentype)==0 ){
sp->dtnum = 0;
continue;
}
hash = 0;
for(j=0; stddt[j]; j++){
hash = hash*53 + stddt[j];
}
hash = (hash & 0x7fffffff)%arraysize;
while( types[hash] ){
if( strcmp(types[hash],stddt)==0 ){
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