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Begin adding the data-structure explaining subsystem. All is contained within

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FossilOrigin-Name: 79ae51c5b1b20ed0a425a87e65a32a096a80b7e1
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drh
2011-12-06 19:44:51 +00:00
parent ed51f29774
commit 7e02e5e6b5
13 changed files with 297 additions and 89 deletions
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14
src/main.c
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@@ -2936,6 +2936,20 @@ int sqlite3_test_control(int op, ...){
break;
}
/* sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT,
** sqlite3_stmt*,const char**);
**
** If compiled with SQLITE_DEBUG, 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;
}
}
va_end(ap);
#endif /* SQLITE_OMIT_BUILTIN_TEST */