database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-07 02:42:48 +03:00
Code Activity

Improved comments. Fewer opcodes for integrity_check on strict tables.

Browse Source 
FossilOrigin-Name: 4ee57fb588b41ab76649c605f57c7bcf5b7b638435af458d69f69a8ccbb121e8
This commit is contained in:
drh
2021-08-19 16:29:33 +00:00
parent 9e1209d111
commit 71c770fbda
7 changed files with 104 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
src/vdbe.c
View File

@@ -2502,6 +2502,22 @@ case OP_IsNull: { /* same as TK_ISNULL, jump, in1 */
break;
}
/* Opcode: IsNullOrType P1 P2 P3 * *
** Synopsis: if typeof(r[P1]) IN (P3,5) goto P2
**
** Jump to P2 if the value in register P1 is NULL or has a datatype P3.
** P3 is an integer which should be one of SQLITE_INTEGER, SQLITE_FLOAT,
** SQLITE_BLOB, SQLITE_NULL, or SQLITE_TEXT.
*/
case OP_IsNullOrType: { /* jump, in1 */
int doTheJump;
pIn1 = &aMem[pOp->p1];
doTheJump = (pIn1->flags & MEM_Null)!=0 || sqlite3_value_type(pIn1)==pOp->p3;
VdbeBranchTaken( doTheJump, 2);
if( doTheJump ) goto jump_to_p2;
break;
}
/* Opcode: ZeroOrNull P1 P2 P3 * *
** Synopsis: r[P2] = 0 OR NULL
**
@@ -2534,22 +2550,6 @@ case OP_NotNull: { /* same as TK_NOTNULL, jump, in1 */
break;
}
/* Opcode: IfType P1 P2 P3 * *
** Synopsis: if typeof(r[P1])!=P3 goto P2
**
** Jump to P2 if the value in register has a datatype given by P3.
** P3 is an integer which should be one of SQLITE_INTEGER, SQLITE_FLOAT,
** SQLITE_BLOB, SQLITE_NULL, or SQLITE_TEXT.
*/
case OP_IfType: { /* jump, in1 */
int doTheJump;
pIn1 = &aMem[pOp->p1];
doTheJump = sqlite3_value_type(pIn1)==pOp->p3;
VdbeBranchTaken( doTheJump, 2);
if( doTheJump ) goto jump_to_p2;
break;
}
/* Opcode: IfNullRow P1 P2 P3 * *
** Synopsis: if P1.nullRow then r[P3]=NULL, goto P2
**
@@ -2896,6 +2896,16 @@ op_column_corrupt:
** This opcode is similar to OP_Affinity except that this opcode
** forces the register type to the Table column type. This is used
** to implement "strict affinity".
**
** Preconditions:
**
** <ul>
** <li> P2 should be the number of non-virtual columns in the
** table of P4.
** <li> Table P4 should be a STRICT table.
** </ul>
**
** If any precondition is false, an assertion fault occurs.
*/
case OP_TypeCheck: {
Table *pTab;
@@ -2905,6 +2915,7 @@ case OP_TypeCheck: {
assert( pOp->p4type==P4_TABLE );
pTab = pOp->p4.pTab;
assert( pTab->tabFlags & TF_Strict );
assert( pTab->nNVCol==pOp->p2 );
aCol = pTab->aCol;
pIn1 = &aMem[pOp->p1];
for(i=0; i<pTab->nCol; i++){