void sqliteDropProc(Parse *pParse, Token *pName){
Object *pObj;
char *zName;
Vdbe *v = sqliteGetVdbe(pParse);
sqlite *db = pParse->db;
zName = sqliteStrNDup(pName->z, pName->n);
sqliteDequote(zName);
pObj = sqliteHashFind(&(db->aDb[0].objectHash), zName, pName->n+1);
if( !pParse->explain && !pObj ){
sqliteErrorMsg(pParse, "no such object: %T", pName);
goto dropobject_cleanup;
}
/* Generate code to destroy the database record of the trigger.
*/
if( v ){
int base;
static VdbeOpList dropObject[] = {
{ OP_Rewind, 0, ADDR(9), 0},
{ OP_String, 0, 0, 0}, /* 1 */
{ OP_Column, 0, 1, 0},
{ OP_Ne, 0, ADDR(8), 0},
{ OP_String, 0, 0, "procedure"},
{ OP_Column, 0, 0, 0},
{ OP_Ne, 0, ADDR(8), 0},
{ OP_Delete, 0, 0, 0},
{ OP_Next, 0, ADDR(1), 0}, /* 8 */
};
sqliteBeginWriteOperation(pParse, 0, 0);
sqliteOpenMasterTable(v, 0);
base = sqliteVdbeAddOpList(v, ArraySize(dropObject), dropObject);
sqliteVdbeChangeP3(v, base+1, zName, 0);
if( pObj && pObj->iDb==0 ){
sqliteChangeCookie(db, v);
}
sqliteVdbeAddOp(v, OP_Close, 0, 0);
sqliteEndWriteOperation(pParse);
}
/*
* If this is not an "explain", then delete the trigger structure.
*/
if( !pParse->explain ){
sqliteHashInsert(&(db->aDb[pObj->iDb].objectHash), zName, pName->n+1, 0);
sqliteDeleteObject(pObj);
}
dropobject_cleanup:
sqliteFree(zName);
}
/*
** This routine is called after the body of the procedure has been parsed
** in order to complete the process of building the procedure object.
*/
void sqliteFinishProc(
Parse *pParse, /* Parser context */
Block *pBlock, /* The procedure body */
Token *pAll /* Token that describes the complete CREATE text */
){
Object *no = 0; /* The object whose construction is finishing up */
sqlite *db = pParse->db; /* The database */
Vdbe *v = sqliteGetVdbe(pParse);
if( pParse->nErr || pParse->pNewObject==0 ) goto objectfinish_cleanup;
no = pParse->pNewObject;
pParse->pNewObject = 0;
sqliteCompileBlock(pParse, pBlock);
sqliteVdbeAddOp(v, OP_Halt, 0, 0);
/* save compiled body code, reset vdbe */
if( !pParse->explain ){
no->nOp = v->nOp;
v->nOp = 0;
no->aOp = v->aOp;
v->aOp = 0;
v->nOpAlloc = 0;
}
DbClearProperty(db, 0, DB_Locked);
DbClearProperty(db, 1, DB_Locked);
/* if we are not initializing build the sqlite_master entry */
if( !db->init.busy ){
static VdbeOpList insertObj[] = {
{ OP_NewRecno, 0, 0, 0 },
{ OP_String, 0, 0, "procedure" },
{ OP_String, 0, 0, 0 }, /* 2: object name */
{ OP_String, 0, 0, 0 },
{ OP_Integer, 0, 0, 0 },
{ OP_String, 0, 0, 0 }, /* 5: SQL */
{ OP_MakeRecord, 5, 0, 0 },
{ OP_PutIntKey, 0, 0, 0 },
};
int addr;
/* Make an entry in the sqlite_master table */
if( v==0 ) goto objectfinish_cleanup;
sqliteBeginWriteOperation(pParse, 0, 0);
sqliteOpenMasterTable(v, 0);
addr = sqliteVdbeAddOpList(v, ArraySize(insertObj), insertObj);
sqliteVdbeChangeP3(v, addr+2, no->name, 0);
sqliteVdbeChangeP3(v, addr+5, pAll->z, pAll->n);
if( no->iDb==0 ){
sqliteChangeCookie(db, v);
}
sqliteVdbeAddOp(v, OP_Close, 0, 0);
sqliteEndWriteOperation(pParse);
}
if( !pParse->explain ){
sqliteHashInsert(&db->aDb[no->iDb].objectHash,
no->name, strlen(no->name)+1, no);
no = 0;
}
objectfinish_cleanup:
sqliteDeleteObject(no);
sqliteDeleteObject(pParse->pNewObject);
pParse->pNewObject = 0;
}
/*
** Drop a trigger given a pointer to that trigger. If nested is false,
** then also generate code to remove the trigger from the SQLITE_MASTER
** table.
*/
void sqliteDropTriggerPtr(Parse *pParse, Trigger *pTrigger, int nested){
Table *pTable;
Vdbe *v;
sqlite *db = pParse->db;
assert( pTrigger->iDb<db->nDb );
if( pTrigger->iDb>=2 ){
sqliteErrorMsg(pParse, "triggers may not be removed from "
"auxiliary database %s", db->aDb[pTrigger->iDb].zName);
return;
}
pTable = sqliteFindTable(db, pTrigger->table,db->aDb[pTrigger->iTabDb].zName);
assert(pTable);
assert( pTable->iDb==pTrigger->iDb || pTrigger->iDb==1 );
#ifndef SQLITE_OMIT_AUTHORIZATION
{
int code = SQLITE_DROP_TRIGGER;
const char *zDb = db->aDb[pTrigger->iDb].zName;
const char *zTab = SCHEMA_TABLE(pTrigger->iDb);
if( pTrigger->iDb ) code = SQLITE_DROP_TEMP_TRIGGER;
if( sqliteAuthCheck(pParse, code, pTrigger->name, pTable->zName, zDb) ||
sqliteAuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){
return;
}
}
#endif
/* Generate code to destroy the database record of the trigger.
*/
if( pTable!=0 && !nested && (v = sqliteGetVdbe(pParse))!=0 ){
int base;
static VdbeOpList dropTrigger[] = {
{ OP_Rewind, 0, ADDR(9), 0},
{ OP_String, 0, 0, 0}, /* 1 */
{ OP_Column, 0, 1, 0},
{ OP_Ne, 0, ADDR(8), 0},
{ OP_String, 0, 0, "trigger"},
{ OP_Column, 0, 0, 0},
{ OP_Ne, 0, ADDR(8), 0},
{ OP_Delete, 0, 0, 0},
{ OP_Next, 0, ADDR(1), 0}, /* 8 */
};
sqliteBeginWriteOperation(pParse, 0, 0);
sqliteOpenMasterTable(v, pTrigger->iDb);
base = sqliteVdbeAddOpList(v, ArraySize(dropTrigger), dropTrigger);
sqliteVdbeChangeP3(v, base+1, pTrigger->name, 0);
if( pTrigger->iDb==0 ){
sqliteChangeCookie(db, v);
}
sqliteVdbeAddOp(v, OP_Close, 0, 0);
sqliteEndWriteOperation(pParse);
}
/*
* If this is not an "explain", then delete the trigger structure.
*/
if( !pParse->explain ){
const char *zName = pTrigger->name;
int nName = strlen(zName);
if( pTable->pTrigger == pTrigger ){
pTable->pTrigger = pTrigger->pNext;
}else{
Trigger *cc = pTable->pTrigger;
while( cc ){
if( cc->pNext == pTrigger ){
cc->pNext = cc->pNext->pNext;
break;
}
cc = cc->pNext;
}
assert(cc);
}
sqliteHashInsert(&(db->aDb[pTrigger->iDb].trigHash), zName, nName+1, 0);
sqliteDeleteTrigger(pTrigger);
}
}
/*
** This routine is called after all of the trigger actions have been parsed
** in order to complete the process of building the trigger.
*/
void sqliteFinishTrigger(
Parse *pParse, /* Parser context */
TriggerStep *pStepList, /* The triggered program */
Token *pAll /* Token that describes the complete CREATE TRIGGER */
){
Trigger *nt = 0; /* The trigger whose construction is finishing up */
sqlite *db = pParse->db; /* The database */
DbFixer sFix;
if( pParse->nErr || pParse->pNewTrigger==0 ) goto triggerfinish_cleanup;
nt = pParse->pNewTrigger;
pParse->pNewTrigger = 0;
nt->step_list = pStepList;
while( pStepList ){
pStepList->pTrig = nt;
pStepList = pStepList->pNext;
}
if( sqliteFixInit(&sFix, pParse, nt->iDb, "trigger", &nt->nameToken)
&& sqliteFixTriggerStep(&sFix, nt->step_list) ){
goto triggerfinish_cleanup;
}
/* if we are not initializing, and this trigger is not on a TEMP table,
** build the sqlite_master entry
*/
if( !db->init.busy ){
static VdbeOpList insertTrig[] = {
{ OP_NewRecno, 0, 0, 0 },
{ OP_String, 0, 0, "trigger" },
{ OP_String, 0, 0, 0 }, /* 2: trigger name */
{ OP_String, 0, 0, 0 }, /* 3: table name */
{ OP_Integer, 0, 0, 0 },
{ OP_String, 0, 0, 0 }, /* 5: SQL */
{ OP_MakeRecord, 5, 0, 0 },
{ OP_PutIntKey, 0, 0, 0 },
};
int addr;
Vdbe *v;
/* Make an entry in the sqlite_master table */
v = sqliteGetVdbe(pParse);
if( v==0 ) goto triggerfinish_cleanup;
sqliteBeginWriteOperation(pParse, 0, 0);
sqliteOpenMasterTable(v, nt->iDb);
addr = sqliteVdbeAddOpList(v, ArraySize(insertTrig), insertTrig);
sqliteVdbeChangeP3(v, addr+2, nt->name, 0);
sqliteVdbeChangeP3(v, addr+3, nt->table, 0);
sqliteVdbeChangeP3(v, addr+5, pAll->z, pAll->n);
if( nt->iDb==0 ){
sqliteChangeCookie(db, v);
}
sqliteVdbeAddOp(v, OP_Close, 0, 0);
sqliteEndWriteOperation(pParse);
}
if( !pParse->explain ){
Table *pTab;
sqliteHashInsert(&db->aDb[nt->iDb].trigHash,
nt->name, strlen(nt->name)+1, nt);
pTab = sqliteLocateTable(pParse, nt->table, db->aDb[nt->iTabDb].zName);
assert( pTab!=0 );
nt->pNext = pTab->pTrigger;
pTab->pTrigger = nt;
nt = 0;
}
triggerfinish_cleanup:
sqliteDeleteTrigger(nt);
sqliteDeleteTrigger(pParse->pNewTrigger);
pParse->pNewTrigger = 0;
sqliteDeleteTriggerStep(pStepList);
}
