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Overview
| Comment: | Minor tweak to the SQL grammar to make the parser tables a few bytes smaller. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
cc4810b23e683e8c359f7c1a562338ec |
| User & Date: | drh 2017-06-28 14:26:37.622 |
Context
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2017-06-28
| ||
| 15:01 | Faster parser stack overflow detection. (check-in: 36e54cd8b1 user: drh tags: trunk) | |
| 14:26 | Minor tweak to the SQL grammar to make the parser tables a few bytes smaller. (check-in: cc4810b23e user: drh tags: trunk) | |
| 13:47 | In the lemon-generated parser, store the number of symbols on the RHS of each rule as a negative number and add it to the stack pointer, rather than storing the value as a positive and subtracting it. This makes the parser faster. (check-in: b362f0d8ed user: drh tags: trunk) | |
Changes
Changes to src/parse.y.
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1371 1372 1373 1374 1375 1376 1377 |
trigger_time(C) trigger_event(D)
ON fullname(E) foreach_clause when_clause(G). {
sqlite3BeginTrigger(pParse, &B, &Z, C, D.a, D.b, E, G, T, NOERR);
A = (Z.n==0?B:Z); /*A-overwrites-T*/
}
%type trigger_time {int}
| | < | 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 |
trigger_time(C) trigger_event(D)
ON fullname(E) foreach_clause when_clause(G). {
sqlite3BeginTrigger(pParse, &B, &Z, C, D.a, D.b, E, G, T, NOERR);
A = (Z.n==0?B:Z); /*A-overwrites-T*/
}
%type trigger_time {int}
trigger_time(A) ::= BEFORE|AFTER(X). { A = @X; /*A-overwrites-X*/ }
trigger_time(A) ::= INSTEAD OF. { A = TK_INSTEAD;}
trigger_time(A) ::= . { A = TK_BEFORE; }
%type trigger_event {struct TrigEvent}
%destructor trigger_event {sqlite3IdListDelete(pParse->db, $$.b);}
trigger_event(A) ::= DELETE|INSERT(X). {A.a = @X; /*A-overwrites-X*/ A.b = 0;}
trigger_event(A) ::= UPDATE(X). {A.a = @X; /*A-overwrites-X*/ A.b = 0;}
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| ︙ | ︙ |