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Import the experimental parse-tree explainer, with fixes, from the

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tree-explain branch.

FossilOrigin-Name: bcbc7152d49107afa926c8950360c61a6cf3d244
This commit is contained in:
drh
2011-12-10 15:55:01 +00:00
parent 3a0c9c0298 a5eec8c8c3
commit 678a9aa7bd
13 changed files with 544 additions and 93 deletions
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16
src/main.c
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@@ -2936,6 +2936,22 @@ int sqlite3_test_control(int op, ...){
break;
}
#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
/* sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT,
** sqlite3_stmt*,const char**);
**
** If compiled with SQLITE_ENABLE_TREE_EXPLAIN, each sqlite3_stmt holds
** a string that describes the optimized parse tree. This test-control
** returns a pointer to that string.
*/
case SQLITE_TESTCTRL_EXPLAIN_STMT: {
sqlite3_stmt *pStmt = va_arg(ap, sqlite3_stmt*);
const char **pzRet = va_arg(ap, const char**);
*pzRet = sqlite3VdbeExplanation((Vdbe*)pStmt);
break;
}
#endif
}
va_end(ap);
#endif /* SQLITE_OMIT_BUILTIN_TEST */