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Overview
| Comment: | Add assert() statements to sqlite3ExprDelete() that prove various symmetry properties of the Expr object that might be exploited to make the Expr object smaller and faster. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | expr-simplify |
| Files: | files | file ages | folders |
| SHA3-256: |
81f25d5c84e4d2d0cd3c6a7c105c7c93 |
| User & Date: | drh 2018-07-28 01:30:43 |
Context
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2018-09-18
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| 18:08 | Merge all recent trunk enhancements. check-in: 655f0654 user: drh tags: expr-simplify | |
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2018-07-28
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| 13:37 | An early attempt at refactoring Expr Closed-Leaf check-in: fc90a53d user: drh tags: expr-simplify-branch1 | |
| 01:30 | Add assert() statements to sqlite3ExprDelete() that prove various symmetry properties of the Expr object that might be exploited to make the Expr object smaller and faster. check-in: 81f25d5c user: drh tags: expr-simplify | |
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2018-07-27
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| 23:33 | Improvements to the parser to increase coverage. Fix the parser so that at least one expresssion is required after PARTITION BY and within the list of expressions on VALUES(). check-in: 02204f8b user: drh tags: trunk | |
Changes
Changes to src/expr.c.
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assert( !ExprHasProperty(p, EP_IntValue) || p->u.iValue>=0 );
#ifdef SQLITE_DEBUG
if( ExprHasProperty(p, EP_Leaf) && !ExprHasProperty(p, EP_TokenOnly) ){
assert( p->pLeft==0 );
assert( p->pRight==0 );
assert( p->x.pSelect==0 );
}
#endif
if( !ExprHasProperty(p, (EP_TokenOnly|EP_Leaf)) ){
/* The Expr.x union is never used at the same time as Expr.pRight */
assert( p->x.pList==0 || p->pRight==0 );
if( p->pLeft && p->op!=TK_SELECT_COLUMN ) sqlite3ExprDeleteNN(db, p->pLeft);
if( p->pRight ){
sqlite3ExprDeleteNN(db, p->pRight);
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1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 |
assert( !ExprHasProperty(p, EP_IntValue) || p->u.iValue>=0 );
#ifdef SQLITE_DEBUG
if( ExprHasProperty(p, EP_Leaf) && !ExprHasProperty(p, EP_TokenOnly) ){
assert( p->pLeft==0 );
assert( p->pRight==0 );
assert( p->x.pSelect==0 );
}
if( !ExprHasProperty(p, EP_TokenOnly) ){
assert( p->op!=TK_FUNCTION || p->pLeft==0 );
assert( p->pRight==0 || p->x.pSelect==0 );
}
if( !ExprHasProperty(p, (EP_TokenOnly|EP_Reduced)) ){
assert( p->pWin==0 || p->pLeft==0 );
assert( p->pWin==0 || p->pTab==0 );
assert( p->pWin==0 || p->op==TK_FUNCTION );
assert( p->pWin==0 || !ExprHasProperty(p, EP_xIsSelect) );
assert( p->pTab==0 || (p->pRight==0 && p->x.pSelect==0) );
}
#endif
if( !ExprHasProperty(p, (EP_TokenOnly|EP_Leaf)) ){
/* The Expr.x union is never used at the same time as Expr.pRight */
assert( p->x.pList==0 || p->pRight==0 );
if( p->pLeft && p->op!=TK_SELECT_COLUMN ) sqlite3ExprDeleteNN(db, p->pLeft);
if( p->pRight ){
sqlite3ExprDeleteNN(db, p->pRight);
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