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Overview
| Comment: | Minor changes to the CAST logic to make it more testable. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
1ad70ec550c004160d9c0c57e6c41681 |
| User & Date: | drh 2014-08-25 21:11:01 |
Context
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2014-08-25
| ||
| 22:37 | Add an assert() and five testcase() macros to the OP_Cast opcode implementation to help verify that it is fully tested. check-in: af364cce user: drh tags: trunk | |
| 21:11 | Minor changes to the CAST logic to make it more testable. check-in: 1ad70ec5 user: drh tags: trunk | |
| 20:21 | Test cases added for using unary "+" and CAST operators on the RHS of range constraints and verifying that STAT3/4 can use those constraints. check-in: 42505e5a user: drh tags: trunk | |
Changes
Changes to src/vdbemem.c.
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if( flags & MEM_Int ){
return pMem->u.i;
}else if( flags & MEM_Real ){
return doubleToInt64(pMem->r);
}else if( flags & (MEM_Str|MEM_Blob) ){
i64 value = 0;
assert( pMem->z || pMem->n==0 );
testcase( pMem->z==0 );
sqlite3Atoi64(pMem->z, &value, pMem->n, pMem->enc);
return value;
}else{
return 0;
}
}
................................................................................
}
while( (op = pExpr->op)==TK_UPLUS ) pExpr = pExpr->pLeft;
if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
if( op==TK_CAST ){
u8 aff = sqlite3AffinityType(pExpr->u.zToken,0);
rc = valueFromExpr(db, pExpr->pLeft, enc, aff, ppVal, pCtx);
if( rc==SQLITE_OK && *ppVal ){
sqlite3VdbeMemCast(*ppVal, aff, SQLITE_UTF8);
sqlite3ValueApplyAffinity(*ppVal, affinity, SQLITE_UTF8);
}
return rc;
}
/* Handle negative integers in a single step. This is needed in the
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if( flags & MEM_Int ){
return pMem->u.i;
}else if( flags & MEM_Real ){
return doubleToInt64(pMem->r);
}else if( flags & (MEM_Str|MEM_Blob) ){
i64 value = 0;
assert( pMem->z || pMem->n==0 );
sqlite3Atoi64(pMem->z, &value, pMem->n, pMem->enc);
return value;
}else{
return 0;
}
}
................................................................................
}
while( (op = pExpr->op)==TK_UPLUS ) pExpr = pExpr->pLeft;
if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
if( op==TK_CAST ){
u8 aff = sqlite3AffinityType(pExpr->u.zToken,0);
rc = valueFromExpr(db, pExpr->pLeft, enc, aff, ppVal, pCtx);
testcase( rc!=SQLITE_OK );
if( *ppVal ){
sqlite3VdbeMemCast(*ppVal, aff, SQLITE_UTF8);
sqlite3ValueApplyAffinity(*ppVal, affinity, SQLITE_UTF8);
}
return rc;
}
/* Handle negative integers in a single step. This is needed in the
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