database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-08 03:22:21 +03:00
Code Activity

Add RAISE() function, which allows more advanced flow-control in trigger programs (ticket #55) (CVS 614)

Browse Source 
FossilOrigin-Name: d4a2fb10067203a0d49317db747759872e62927e
This commit is contained in:
danielk1977
2002-06-11 02:25:40 +00:00
parent 28f4b6885b
commit 6f34903e85
12 changed files with 256 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/expr.c
View File

@@ -12,7 +12,7 @@
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions in SQLite.
**
** $Id: expr.c,v 1.70 2002/06/09 01:16:01 drh Exp $
** $Id: expr.c,v 1.71 2002/06/11 02:25:41 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -204,7 +204,7 @@ SrcList *sqliteSrcListDup(SrcList *p){
if( pNew==0 ) return 0;
pNew->nSrc = p->nSrc;
pNew->a = sqliteMalloc( p->nSrc*sizeof(p->a[0]) );
if( pNew->a==0 ) return 0;
if( pNew->a==0 && p->nSrc != 0 ) return 0;
for(i=0; i<p->nSrc; i++){
pNew->a[i].zName = sqliteStrDup(p->a[i].zName);
pNew->a[i].zAlias = sqliteStrDup(p->a[i].zAlias);
@@ -1014,6 +1014,28 @@ void sqliteExprCode(Parse *pParse, Expr *pExpr){
sqliteVdbeAddOp(v, OP_String, 0, 0);
}
sqliteVdbeResolveLabel(v, expr_end_label);
break;
}
case TK_RAISE: {
if( !pParse->trigStack ){
sqliteSetNString(&pParse->zErrMsg,
"RAISE() may only be used within a trigger-program", -1, 0);
pParse->nErr++;
return;
}
if( pExpr->iColumn == OE_Rollback ||
pExpr->iColumn == OE_Abort ||
pExpr->iColumn == OE_Fail ){
char * msg = sqliteStrNDup(pExpr->token.z, pExpr->token.n);
sqliteVdbeAddOp(v, OP_Halt, SQLITE_CONSTRAINT, pExpr->iColumn);
sqliteDequote(msg);
sqliteVdbeChangeP3(v, -1, msg, 0);
sqliteFree(msg);
} else {
assert( pExpr->iColumn == OE_Ignore );
sqliteVdbeAddOp(v, OP_Goto, 0, pParse->trigStack->ignoreJump);
sqliteVdbeChangeP3(v, -1, "(IGNORE jump)", -1);
}
}
break;
}