libraries moved to opensim-libs, a new repository

1 files changed, 0 insertions, 839 deletions

diff --git a/libraries/sqlite/win32/trigger.c b/libraries/sqlite/win32/trigger.c
deleted file mode 100755
index 252dd7b..0000000
--- a/libraries/sqlite/win32/trigger.c
+++ /dev/null
@@ -1,839 +0,0 @@
-/*
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-*************************************************************************
-*
-*/
-#include "sqliteInt.h"
-
-#ifndef SQLITE_OMIT_TRIGGER
-/*
-** Delete a linked list of TriggerStep structures.
-*/
-void sqlite3DeleteTriggerStep(TriggerStep *pTriggerStep){
-  while( pTriggerStep ){
-    TriggerStep * pTmp = pTriggerStep;
-    pTriggerStep = pTriggerStep->pNext;
-
-    if( pTmp->target.dyn ) sqlite3_free((char*)pTmp->target.z);
-    sqlite3ExprDelete(pTmp->pWhere);
-    sqlite3ExprListDelete(pTmp->pExprList);
-    sqlite3SelectDelete(pTmp->pSelect);
-    sqlite3IdListDelete(pTmp->pIdList);
-
-    sqlite3_free(pTmp);
-  }
-}
-
-/*
-** This is called by the parser when it sees a CREATE TRIGGER statement
-** up to the point of the BEGIN before the trigger actions.  A Trigger
-** structure is generated based on the information available and stored
-** in pParse->pNewTrigger.  After the trigger actions have been parsed, the
-** sqlite3FinishTrigger() function is called to complete the trigger
-** construction process.
-*/
-void sqlite3BeginTrigger(
-  Parse *pParse,      /* The parse context of the CREATE TRIGGER statement */
-  Token *pName1,      /* The name of the trigger */
-  Token *pName2,      /* The name of the trigger */
-  int tr_tm,          /* One of TK_BEFORE, TK_AFTER, TK_INSTEAD */
-  int op,             /* One of TK_INSERT, TK_UPDATE, TK_DELETE */
-  IdList *pColumns,   /* column list if this is an UPDATE OF trigger */
-  SrcList *pTableName,/* The name of the table/view the trigger applies to */
-  Expr *pWhen,        /* WHEN clause */
-  int isTemp,         /* True if the TEMPORARY keyword is present */
-  int noErr           /* Suppress errors if the trigger already exists */
-){
-  Trigger *pTrigger = 0;
-  Table *pTab;
-  char *zName = 0;        /* Name of the trigger */
-  sqlite3 *db = pParse->db;
-  int iDb;                /* The database to store the trigger in */
-  Token *pName;           /* The unqualified db name */
-  DbFixer sFix;
-  int iTabDb;
-
-  assert( pName1!=0 );   /* pName1->z might be NULL, but not pName1 itself */
-  assert( pName2!=0 );
-  if( isTemp ){
-    /* If TEMP was specified, then the trigger name may not be qualified. */
-    if( pName2->n>0 ){
-      sqlite3ErrorMsg(pParse, "temporary trigger may not have qualified name");
-      goto trigger_cleanup;
-    }
-    iDb = 1;
-    pName = pName1;
-  }else{
-    /* Figure out the db that the the trigger will be created in */
-    iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName);
-    if( iDb<0 ){
-      goto trigger_cleanup;
-    }
-  }
-
-  /* If the trigger name was unqualified, and the table is a temp table,
-  ** then set iDb to 1 to create the trigger in the temporary database.
-  ** If sqlite3SrcListLookup() returns 0, indicating the table does not
-  ** exist, the error is caught by the block below.
-  */
-  if( !pTableName || db->mallocFailed ){
-    goto trigger_cleanup;
-  }
-  pTab = sqlite3SrcListLookup(pParse, pTableName);
-  if( pName2->n==0 && pTab && pTab->pSchema==db->aDb[1].pSchema ){
-    iDb = 1;
-  }
-
-  /* Ensure the table name matches database name and that the table exists */
-  if( db->mallocFailed ) goto trigger_cleanup;
-  assert( pTableName->nSrc==1 );
-  if( sqlite3FixInit(&sFix, pParse, iDb, "trigger", pName) && 
-      sqlite3FixSrcList(&sFix, pTableName) ){
-    goto trigger_cleanup;
-  }
-  pTab = sqlite3SrcListLookup(pParse, pTableName);
-  if( !pTab ){
-    /* The table does not exist. */
-    goto trigger_cleanup;
-  }
-  if( IsVirtual(pTab) ){
-    sqlite3ErrorMsg(pParse, "cannot create triggers on virtual tables");
-    goto trigger_cleanup;
-  }
-
-  /* Check that the trigger name is not reserved and that no trigger of the
-  ** specified name exists */
-  zName = sqlite3NameFromToken(db, pName);
-  if( !zName || SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
-    goto trigger_cleanup;
-  }
-  if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash), zName,strlen(zName)) ){
-    if( !noErr ){
-      sqlite3ErrorMsg(pParse, "trigger %T already exists", pName);
-    }
-    goto trigger_cleanup;
-  }
-
-  /* Do not create a trigger on a system table */
-  if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 ){
-    sqlite3ErrorMsg(pParse, "cannot create trigger on system table");
-    pParse->nErr++;
-    goto trigger_cleanup;
-  }
-
-  /* INSTEAD of triggers are only for views and views only support INSTEAD
-  ** of triggers.
-  */
-  if( pTab->pSelect && tr_tm!=TK_INSTEAD ){
-    sqlite3ErrorMsg(pParse, "cannot create %s trigger on view: %S", 
-        (tr_tm == TK_BEFORE)?"BEFORE":"AFTER", pTableName, 0);
-    goto trigger_cleanup;
-  }
-  if( !pTab->pSelect && tr_tm==TK_INSTEAD ){
-    sqlite3ErrorMsg(pParse, "cannot create INSTEAD OF"
-        " trigger on table: %S", pTableName, 0);
-    goto trigger_cleanup;
-  }
-  iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema);
-
-#ifndef SQLITE_OMIT_AUTHORIZATION
-  {
-    int code = SQLITE_CREATE_TRIGGER;
-    const char *zDb = db->aDb[iTabDb].zName;
-    const char *zDbTrig = isTemp ? db->aDb[1].zName : zDb;
-    if( iTabDb==1 || isTemp ) code = SQLITE_CREATE_TEMP_TRIGGER;
-    if( sqlite3AuthCheck(pParse, code, zName, pTab->zName, zDbTrig) ){
-      goto trigger_cleanup;
-    }
-    if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(iTabDb),0,zDb)){
-      goto trigger_cleanup;
-    }
-  }
-#endif
-
-  /* INSTEAD OF triggers can only appear on views and BEFORE triggers
-  ** cannot appear on views.  So we might as well translate every
-  ** INSTEAD OF trigger into a BEFORE trigger.  It simplifies code
-  ** elsewhere.
-  */
-  if (tr_tm == TK_INSTEAD){
-    tr_tm = TK_BEFORE;
-  }
-
-  /* Build the Trigger object */
-  pTrigger = (Trigger*)sqlite3DbMallocZero(db, sizeof(Trigger));
-  if( pTrigger==0 ) goto trigger_cleanup;
-  pTrigger->name = zName;
-  zName = 0;
-  pTrigger->table = sqlite3DbStrDup(db, pTableName->a[0].zName);
-  pTrigger->pSchema = db->aDb[iDb].pSchema;
-  pTrigger->pTabSchema = pTab->pSchema;
-  pTrigger->op = op;
-  pTrigger->tr_tm = tr_tm==TK_BEFORE ? TRIGGER_BEFORE : TRIGGER_AFTER;
-  pTrigger->pWhen = sqlite3ExprDup(db, pWhen);
-  pTrigger->pColumns = sqlite3IdListDup(db, pColumns);
-  sqlite3TokenCopy(db, &pTrigger->nameToken,pName);
-  assert( pParse->pNewTrigger==0 );
-  pParse->pNewTrigger = pTrigger;
-
-trigger_cleanup:
-  sqlite3_free(zName);
-  sqlite3SrcListDelete(pTableName);
-  sqlite3IdListDelete(pColumns);
-  sqlite3ExprDelete(pWhen);
-  if( !pParse->pNewTrigger ){
-    sqlite3DeleteTrigger(pTrigger);
-  }else{
-    assert( pParse->pNewTrigger==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 sqlite3FinishTrigger(
-  Parse *pParse,          /* Parser context */
-  TriggerStep *pStepList, /* The triggered program */
-  Token *pAll             /* Token that describes the complete CREATE TRIGGER */
-){
-  Trigger *pTrig = 0;     /* The trigger whose construction is finishing up */
-  sqlite3 *db = pParse->db;  /* The database */
-  DbFixer sFix;
-  int iDb;                   /* Database containing the trigger */
-
-  pTrig = pParse->pNewTrigger;
-  pParse->pNewTrigger = 0;
-  if( pParse->nErr || !pTrig ) goto triggerfinish_cleanup;
-  iDb = sqlite3SchemaToIndex(pParse->db, pTrig->pSchema);
-  pTrig->step_list = pStepList;
-  while( pStepList ){
-    pStepList->pTrig = pTrig;
-    pStepList = pStepList->pNext;
-  }
-  if( sqlite3FixInit(&sFix, pParse, iDb, "trigger", &pTrig->nameToken) 
-          && sqlite3FixTriggerStep(&sFix, pTrig->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 const VdbeOpList insertTrig[] = {
-      { OP_NewRowid,   0, 0,  0          },
-      { OP_String8,    0, 0,  "trigger"  },
-      { OP_String8,    0, 0,  0          },  /* 2: trigger name */
-      { OP_String8,    0, 0,  0          },  /* 3: table name */
-      { OP_Integer,    0, 0,  0          },
-      { OP_String8,    0, 0,  "CREATE TRIGGER "},
-      { OP_String8,    0, 0,  0          },  /* 6: SQL */
-      { OP_Concat,     0, 0,  0          }, 
-      { OP_MakeRecord, 5, 0,  "aaada"    },
-      { OP_Insert,     0, 0,  0          },
-    };
-    int addr;
-    Vdbe *v;
-
-    /* Make an entry in the sqlite_master table */
-    v = sqlite3GetVdbe(pParse);
-    if( v==0 ) goto triggerfinish_cleanup;
-    sqlite3BeginWriteOperation(pParse, 0, iDb);
-    sqlite3OpenMasterTable(pParse, iDb);
-    addr = sqlite3VdbeAddOpList(v, ArraySize(insertTrig), insertTrig);
-    sqlite3VdbeChangeP3(v, addr+2, pTrig->name, 0); 
-    sqlite3VdbeChangeP3(v, addr+3, pTrig->table, 0); 
-    sqlite3VdbeChangeP3(v, addr+6, (char*)pAll->z, pAll->n);
-    sqlite3ChangeCookie(db, v, iDb);
-    sqlite3VdbeAddOp(v, OP_Close, 0, 0);
-    sqlite3VdbeOp3(v, OP_ParseSchema, iDb, 0, sqlite3MPrintf(
-        db, "type='trigger' AND name='%q'", pTrig->name), P3_DYNAMIC
-    );
-  }
-
-  if( db->init.busy ){
-    int n;
-    Table *pTab;
-    Trigger *pDel;
-    pDel = sqlite3HashInsert(&db->aDb[iDb].pSchema->trigHash, 
-                     pTrig->name, strlen(pTrig->name), pTrig);
-    if( pDel ){
-      assert( pDel==pTrig );
-      db->mallocFailed = 1;
-      goto triggerfinish_cleanup;
-    }
-    n = strlen(pTrig->table) + 1;
-    pTab = sqlite3HashFind(&pTrig->pTabSchema->tblHash, pTrig->table, n);
-    assert( pTab!=0 );
-    pTrig->pNext = pTab->pTrigger;
-    pTab->pTrigger = pTrig;
-    pTrig = 0;
-  }
-
-triggerfinish_cleanup:
-  sqlite3DeleteTrigger(pTrig);
-  assert( !pParse->pNewTrigger );
-  sqlite3DeleteTriggerStep(pStepList);
-}
-
-/*
-** Make a copy of all components of the given trigger step.  This has
-** the effect of copying all Expr.token.z values into memory obtained
-** from sqlite3_malloc().  As initially created, the Expr.token.z values
-** all point to the input string that was fed to the parser.  But that
-** string is ephemeral - it will go away as soon as the sqlite3_exec()
-** call that started the parser exits.  This routine makes a persistent
-** copy of all the Expr.token.z strings so that the TriggerStep structure
-** will be valid even after the sqlite3_exec() call returns.
-*/
-static void sqlitePersistTriggerStep(sqlite3 *db, TriggerStep *p){
-  if( p->target.z ){
-    p->target.z = (u8*)sqlite3DbStrNDup(db, (char*)p->target.z, p->target.n);
-    p->target.dyn = 1;
-  }
-  if( p->pSelect ){
-    Select *pNew = sqlite3SelectDup(db, p->pSelect);
-    sqlite3SelectDelete(p->pSelect);
-    p->pSelect = pNew;
-  }
-  if( p->pWhere ){
-    Expr *pNew = sqlite3ExprDup(db, p->pWhere);
-    sqlite3ExprDelete(p->pWhere);
-    p->pWhere = pNew;
-  }
-  if( p->pExprList ){
-    ExprList *pNew = sqlite3ExprListDup(db, p->pExprList);
-    sqlite3ExprListDelete(p->pExprList);
-    p->pExprList = pNew;
-  }
-  if( p->pIdList ){
-    IdList *pNew = sqlite3IdListDup(db, p->pIdList);
-    sqlite3IdListDelete(p->pIdList);
-    p->pIdList = pNew;
-  }
-}
-
-/*
-** Turn a SELECT statement (that the pSelect parameter points to) into
-** a trigger step.  Return a pointer to a TriggerStep structure.
-**
-** The parser calls this routine when it finds a SELECT statement in
-** body of a TRIGGER.  
-*/
-TriggerStep *sqlite3TriggerSelectStep(sqlite3 *db, Select *pSelect){
-  TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep));
-  if( pTriggerStep==0 ) {
-    sqlite3SelectDelete(pSelect);
-    return 0;
-  }
-
-  pTriggerStep->op = TK_SELECT;
-  pTriggerStep->pSelect = pSelect;
-  pTriggerStep->orconf = OE_Default;
-  sqlitePersistTriggerStep(db, pTriggerStep);
-
-  return pTriggerStep;
-}
-
-/*
-** Build a trigger step out of an INSERT statement.  Return a pointer
-** to the new trigger step.
-**
-** The parser calls this routine when it sees an INSERT inside the
-** body of a trigger.
-*/
-TriggerStep *sqlite3TriggerInsertStep(
-  sqlite3 *db,        /* The database connection */
-  Token *pTableName,  /* Name of the table into which we insert */
-  IdList *pColumn,    /* List of columns in pTableName to insert into */
-  ExprList *pEList,   /* The VALUE clause: a list of values to be inserted */
-  Select *pSelect,    /* A SELECT statement that supplies values */
-  int orconf          /* The conflict algorithm (OE_Abort, OE_Replace, etc.) */
-){
-  TriggerStep *pTriggerStep;
-
-  assert(pEList == 0 || pSelect == 0);
-  assert(pEList != 0 || pSelect != 0 || db->mallocFailed);
-
-  pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep));
-  if( pTriggerStep ){
-    pTriggerStep->op = TK_INSERT;
-    pTriggerStep->pSelect = pSelect;
-    pTriggerStep->target  = *pTableName;
-    pTriggerStep->pIdList = pColumn;
-    pTriggerStep->pExprList = pEList;
-    pTriggerStep->orconf = orconf;
-    sqlitePersistTriggerStep(db, pTriggerStep);
-  }else{
-    sqlite3IdListDelete(pColumn);
-    sqlite3ExprListDelete(pEList);
-    sqlite3SelectDelete(pSelect);
-  }
-
-  return pTriggerStep;
-}
-
-/*
-** Construct a trigger step that implements an UPDATE statement and return
-** a pointer to that trigger step.  The parser calls this routine when it
-** sees an UPDATE statement inside the body of a CREATE TRIGGER.
-*/
-TriggerStep *sqlite3TriggerUpdateStep(
-  sqlite3 *db,         /* The database connection */
-  Token *pTableName,   /* Name of the table to be updated */
-  ExprList *pEList,    /* The SET clause: list of column and new values */
-  Expr *pWhere,        /* The WHERE clause */
-  int orconf           /* The conflict algorithm. (OE_Abort, OE_Ignore, etc) */
-){
-  TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep));
-  if( pTriggerStep==0 ){
-     sqlite3ExprListDelete(pEList);
-     sqlite3ExprDelete(pWhere);
-     return 0;
-  }
-
-  pTriggerStep->op = TK_UPDATE;
-  pTriggerStep->target  = *pTableName;
-  pTriggerStep->pExprList = pEList;
-  pTriggerStep->pWhere = pWhere;
-  pTriggerStep->orconf = orconf;
-  sqlitePersistTriggerStep(db, pTriggerStep);
-
-  return pTriggerStep;
-}
-
-/*
-** Construct a trigger step that implements a DELETE statement and return
-** a pointer to that trigger step.  The parser calls this routine when it
-** sees a DELETE statement inside the body of a CREATE TRIGGER.
-*/
-TriggerStep *sqlite3TriggerDeleteStep(
-  sqlite3 *db,            /* Database connection */
-  Token *pTableName,      /* The table from which rows are deleted */
-  Expr *pWhere            /* The WHERE clause */
-){
-  TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep));
-  if( pTriggerStep==0 ){
-    sqlite3ExprDelete(pWhere);
-    return 0;
-  }
-
-  pTriggerStep->op = TK_DELETE;
-  pTriggerStep->target  = *pTableName;
-  pTriggerStep->pWhere = pWhere;
-  pTriggerStep->orconf = OE_Default;
-  sqlitePersistTriggerStep(db, pTriggerStep);
-
-  return pTriggerStep;
-}
-
-/* 
-** Recursively delete a Trigger structure
-*/
-void sqlite3DeleteTrigger(Trigger *pTrigger){
-  if( pTrigger==0 ) return;
-  sqlite3DeleteTriggerStep(pTrigger->step_list);
-  sqlite3_free(pTrigger->name);
-  sqlite3_free(pTrigger->table);
-  sqlite3ExprDelete(pTrigger->pWhen);
-  sqlite3IdListDelete(pTrigger->pColumns);
-  if( pTrigger->nameToken.dyn ) sqlite3_free((char*)pTrigger->nameToken.z);
-  sqlite3_free(pTrigger);
-}
-
-/*
-** This function is called to drop a trigger from the database schema. 
-**
-** This may be called directly from the parser and therefore identifies
-** the trigger by name.  The sqlite3DropTriggerPtr() routine does the
-** same job as this routine except it takes a pointer to the trigger
-** instead of the trigger name.
-**/
-void sqlite3DropTrigger(Parse *pParse, SrcList *pName, int noErr){
-  Trigger *pTrigger = 0;
-  int i;
-  const char *zDb;
-  const char *zName;
-  int nName;
-  sqlite3 *db = pParse->db;
-
-  if( db->mallocFailed ) goto drop_trigger_cleanup;
-  if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){
-    goto drop_trigger_cleanup;
-  }
-
-  assert( pName->nSrc==1 );
-  zDb = pName->a[0].zDatabase;
-  zName = pName->a[0].zName;
-  nName = strlen(zName);
-  for(i=OMIT_TEMPDB; i<db->nDb; i++){
-    int j = (i<2) ? i^1 : i;  /* Search TEMP before MAIN */
-    if( zDb && sqlite3StrICmp(db->aDb[j].zName, zDb) ) continue;
-    pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName, nName);
-    if( pTrigger ) break;
-  }
-  if( !pTrigger ){
-    if( !noErr ){
-      sqlite3ErrorMsg(pParse, "no such trigger: %S", pName, 0);
-    }
-    goto drop_trigger_cleanup;
-  }
-  sqlite3DropTriggerPtr(pParse, pTrigger);
-
-drop_trigger_cleanup:
-  sqlite3SrcListDelete(pName);
-}
-
-/*
-** Return a pointer to the Table structure for the table that a trigger
-** is set on.
-*/
-static Table *tableOfTrigger(Trigger *pTrigger){
-  int n = strlen(pTrigger->table) + 1;
-  return sqlite3HashFind(&pTrigger->pTabSchema->tblHash, pTrigger->table, n);
-}
-
-
-/*
-** Drop a trigger given a pointer to that trigger. 
-*/
-void sqlite3DropTriggerPtr(Parse *pParse, Trigger *pTrigger){
-  Table   *pTable;
-  Vdbe *v;
-  sqlite3 *db = pParse->db;
-  int iDb;
-
-  iDb = sqlite3SchemaToIndex(pParse->db, pTrigger->pSchema);
-  assert( iDb>=0 && iDb<db->nDb );
-  pTable = tableOfTrigger(pTrigger);
-  assert( pTable );
-  assert( pTable->pSchema==pTrigger->pSchema || iDb==1 );
-#ifndef SQLITE_OMIT_AUTHORIZATION
-  {
-    int code = SQLITE_DROP_TRIGGER;
-    const char *zDb = db->aDb[iDb].zName;
-    const char *zTab = SCHEMA_TABLE(iDb);
-    if( iDb==1 ) code = SQLITE_DROP_TEMP_TRIGGER;
-    if( sqlite3AuthCheck(pParse, code, pTrigger->name, pTable->zName, zDb) ||
-      sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){
-      return;
-    }
-  }
-#endif
-
-  /* Generate code to destroy the database record of the trigger.
-  */
-  assert( pTable!=0 );
-  if( (v = sqlite3GetVdbe(pParse))!=0 ){
-    int base;
-    static const VdbeOpList dropTrigger[] = {
-      { OP_Rewind,     0, ADDR(9),  0},
-      { OP_String8,    0, 0,        0}, /* 1 */
-      { OP_Column,     0, 1,        0},
-      { OP_Ne,         0, ADDR(8),  0},
-      { OP_String8,    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 */
-    };
-
-    sqlite3BeginWriteOperation(pParse, 0, iDb);
-    sqlite3OpenMasterTable(pParse, iDb);
-    base = sqlite3VdbeAddOpList(v,  ArraySize(dropTrigger), dropTrigger);
-    sqlite3VdbeChangeP3(v, base+1, pTrigger->name, 0);
-    sqlite3ChangeCookie(db, v, iDb);
-    sqlite3VdbeAddOp(v, OP_Close, 0, 0);
-    sqlite3VdbeOp3(v, OP_DropTrigger, iDb, 0, pTrigger->name, 0);
-  }
-}
-
-/*
-** Remove a trigger from the hash tables of the sqlite* pointer.
-*/
-void sqlite3UnlinkAndDeleteTrigger(sqlite3 *db, int iDb, const char *zName){
-  Trigger *pTrigger;
-  int nName = strlen(zName);
-  pTrigger = sqlite3HashInsert(&(db->aDb[iDb].pSchema->trigHash),
-                               zName, nName, 0);
-  if( pTrigger ){
-    Table *pTable = tableOfTrigger(pTrigger);
-    assert( pTable!=0 );
-    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);
-    }
-    sqlite3DeleteTrigger(pTrigger);
-    db->flags |= SQLITE_InternChanges;
-  }
-}
-
-/*
-** pEList is the SET clause of an UPDATE statement.  Each entry
-** in pEList is of the format <id>=<expr>.  If any of the entries
-** in pEList have an <id> which matches an identifier in pIdList,
-** then return TRUE.  If pIdList==NULL, then it is considered a
-** wildcard that matches anything.  Likewise if pEList==NULL then
-** it matches anything so always return true.  Return false only
-** if there is no match.
-*/
-static int checkColumnOverLap(IdList *pIdList, ExprList *pEList){
-  int e;
-  if( !pIdList || !pEList ) return 1;
-  for(e=0; e<pEList->nExpr; e++){
-    if( sqlite3IdListIndex(pIdList, pEList->a[e].zName)>=0 ) return 1;
-  }
-  return 0; 
-}
-
-/*
-** Return a bit vector to indicate what kind of triggers exist for operation
-** "op" on table pTab.  If pChanges is not NULL then it is a list of columns
-** that are being updated.  Triggers only match if the ON clause of the
-** trigger definition overlaps the set of columns being updated.
-**
-** The returned bit vector is some combination of TRIGGER_BEFORE and
-** TRIGGER_AFTER.
-*/
-int sqlite3TriggersExist(
-  Parse *pParse,          /* Used to check for recursive triggers */
-  Table *pTab,            /* The table the contains the triggers */
-  int op,                 /* one of TK_DELETE, TK_INSERT, TK_UPDATE */
-  ExprList *pChanges      /* Columns that change in an UPDATE statement */
-){
-  Trigger *pTrigger;
-  int mask = 0;
-
-  pTrigger = IsVirtual(pTab) ? 0 : pTab->pTrigger;
-  while( pTrigger ){
-    if( pTrigger->op==op && checkColumnOverLap(pTrigger->pColumns, pChanges) ){
-      mask |= pTrigger->tr_tm;
-    }
-    pTrigger = pTrigger->pNext;
-  }
-  return mask;
-}
-
-/*
-** Convert the pStep->target token into a SrcList and return a pointer
-** to that SrcList.
-**
-** This routine adds a specific database name, if needed, to the target when
-** forming the SrcList.  This prevents a trigger in one database from
-** referring to a target in another database.  An exception is when the
-** trigger is in TEMP in which case it can refer to any other database it
-** wants.
-*/
-static SrcList *targetSrcList(
-  Parse *pParse,       /* The parsing context */
-  TriggerStep *pStep   /* The trigger containing the target token */
-){
-  Token sDb;           /* Dummy database name token */
-  int iDb;             /* Index of the database to use */
-  SrcList *pSrc;       /* SrcList to be returned */
-
-  iDb = sqlite3SchemaToIndex(pParse->db, pStep->pTrig->pSchema);
-  if( iDb==0 || iDb>=2 ){
-    assert( iDb<pParse->db->nDb );
-    sDb.z = (u8*)pParse->db->aDb[iDb].zName;
-    sDb.n = strlen((char*)sDb.z);
-    pSrc = sqlite3SrcListAppend(pParse->db, 0, &sDb, &pStep->target);
-  } else {
-    pSrc = sqlite3SrcListAppend(pParse->db, 0, &pStep->target, 0);
-  }
-  return pSrc;
-}
-
-/*
-** Generate VDBE code for zero or more statements inside the body of a
-** trigger.  
-*/
-static int codeTriggerProgram(
-  Parse *pParse,            /* The parser context */
-  TriggerStep *pStepList,   /* List of statements inside the trigger body */
-  int orconfin              /* Conflict algorithm. (OE_Abort, etc) */  
-){
-  TriggerStep * pTriggerStep = pStepList;
-  int orconf;
-  Vdbe *v = pParse->pVdbe;
-  sqlite3 *db = pParse->db;
-
-  assert( pTriggerStep!=0 );
-  assert( v!=0 );
-  sqlite3VdbeAddOp(v, OP_ContextPush, 0, 0);
-  VdbeComment((v, "# begin trigger %s", pStepList->pTrig->name));
-  while( pTriggerStep ){
-    orconf = (orconfin == OE_Default)?pTriggerStep->orconf:orconfin;
-    pParse->trigStack->orconf = orconf;
-    switch( pTriggerStep->op ){
-      case TK_SELECT: {
-        Select *ss = sqlite3SelectDup(db, pTriggerStep->pSelect);
-        if( ss ){
-          sqlite3SelectResolve(pParse, ss, 0);
-          sqlite3Select(pParse, ss, SRT_Discard, 0, 0, 0, 0, 0);
-          sqlite3SelectDelete(ss);
-        }
-        break;
-      }
-      case TK_UPDATE: {
-        SrcList *pSrc;
-        pSrc = targetSrcList(pParse, pTriggerStep);
-        sqlite3VdbeAddOp(v, OP_ResetCount, 0, 0);
-        sqlite3Update(pParse, pSrc,
-                sqlite3ExprListDup(db, pTriggerStep->pExprList), 
-                sqlite3ExprDup(db, pTriggerStep->pWhere), orconf);
-        sqlite3VdbeAddOp(v, OP_ResetCount, 1, 0);
-        break;
-      }
-      case TK_INSERT: {
-        SrcList *pSrc;
-        pSrc = targetSrcList(pParse, pTriggerStep);
-        sqlite3VdbeAddOp(v, OP_ResetCount, 0, 0);
-        sqlite3Insert(pParse, pSrc,
-          sqlite3ExprListDup(db, pTriggerStep->pExprList), 
-          sqlite3SelectDup(db, pTriggerStep->pSelect), 
-          sqlite3IdListDup(db, pTriggerStep->pIdList), orconf);
-        sqlite3VdbeAddOp(v, OP_ResetCount, 1, 0);
-        break;
-      }
-      case TK_DELETE: {
-        SrcList *pSrc;
-        sqlite3VdbeAddOp(v, OP_ResetCount, 0, 0);
-        pSrc = targetSrcList(pParse, pTriggerStep);
-        sqlite3DeleteFrom(pParse, pSrc, 
-                          sqlite3ExprDup(db, pTriggerStep->pWhere));
-        sqlite3VdbeAddOp(v, OP_ResetCount, 1, 0);
-        break;
-      }
-      default:
-        assert(0);
-    } 
-    pTriggerStep = pTriggerStep->pNext;
-  }
-  sqlite3VdbeAddOp(v, OP_ContextPop, 0, 0);
-  VdbeComment((v, "# end trigger %s", pStepList->pTrig->name));
-
-  return 0;
-}
-
-/*
-** This is called to code FOR EACH ROW triggers.
-**
-** When the code that this function generates is executed, the following 
-** must be true:
-**
-** 1. No cursors may be open in the main database.  (But newIdx and oldIdx
-**    can be indices of cursors in temporary tables.  See below.)
-**
-** 2. If the triggers being coded are ON INSERT or ON UPDATE triggers, then
-**    a temporary vdbe cursor (index newIdx) must be open and pointing at
-**    a row containing values to be substituted for new.* expressions in the
-**    trigger program(s).
-**
-** 3. If the triggers being coded are ON DELETE or ON UPDATE triggers, then
-**    a temporary vdbe cursor (index oldIdx) must be open and pointing at
-**    a row containing values to be substituted for old.* expressions in the
-**    trigger program(s).
-**
-*/
-int sqlite3CodeRowTrigger(
-  Parse *pParse,       /* Parse context */
-  int op,              /* One of TK_UPDATE, TK_INSERT, TK_DELETE */
-  ExprList *pChanges,  /* Changes list for any UPDATE OF triggers */
-  int tr_tm,           /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
-  Table *pTab,         /* The table to code triggers from */
-  int newIdx,          /* The indice of the "new" row to access */
-  int oldIdx,          /* The indice of the "old" row to access */
-  int orconf,          /* ON CONFLICT policy */
-  int ignoreJump       /* Instruction to jump to for RAISE(IGNORE) */
-){
-  Trigger *p;
-  TriggerStack trigStackEntry;
-
-  assert(op == TK_UPDATE || op == TK_INSERT || op == TK_DELETE);
-  assert(tr_tm == TRIGGER_BEFORE || tr_tm == TRIGGER_AFTER );
-
-  assert(newIdx != -1 || oldIdx != -1);
-
-  for(p=pTab->pTrigger; p; p=p->pNext){
-    int fire_this = 0;
-
-    /* Determine whether we should code this trigger */
-    if( 
-      p->op==op && 
-      p->tr_tm==tr_tm && 
-      (p->pSchema==p->pTabSchema || p->pSchema==pParse->db->aDb[1].pSchema) &&
-      (op!=TK_UPDATE||!p->pColumns||checkColumnOverLap(p->pColumns,pChanges))
-    ){
-      TriggerStack *pS;      /* Pointer to trigger-stack entry */
-      for(pS=pParse->trigStack; pS && p!=pS->pTrigger; pS=pS->pNext){}
-      if( !pS ){
-        fire_this = 1;
-      }
-#if 0    /* Give no warning for recursive triggers.  Just do not do them */
-      else{
-        sqlite3ErrorMsg(pParse, "recursive triggers not supported (%s)",
-            p->name);
-        return SQLITE_ERROR;
-      }
-#endif
-    }
- 
-    if( fire_this ){
-      int endTrigger;
-      Expr * whenExpr;
-      AuthContext sContext;
-      NameContext sNC;
-
-      memset(&sNC, 0, sizeof(sNC));
-      sNC.pParse = pParse;
-
-      /* Push an entry on to the trigger stack */
-      trigStackEntry.pTrigger = p;
-      trigStackEntry.newIdx = newIdx;
-      trigStackEntry.oldIdx = oldIdx;
-      trigStackEntry.pTab = pTab;
-      trigStackEntry.pNext = pParse->trigStack;
-      trigStackEntry.ignoreJump = ignoreJump;
-      pParse->trigStack = &trigStackEntry;
-      sqlite3AuthContextPush(pParse, &sContext, p->name);
-
-      /* code the WHEN clause */
-      endTrigger = sqlite3VdbeMakeLabel(pParse->pVdbe);
-      whenExpr = sqlite3ExprDup(pParse->db, p->pWhen);
-      if( sqlite3ExprResolveNames(&sNC, whenExpr) ){
-        pParse->trigStack = trigStackEntry.pNext;
-        sqlite3ExprDelete(whenExpr);
-        return 1;
-      }
-      sqlite3ExprIfFalse(pParse, whenExpr, endTrigger, 1);
-      sqlite3ExprDelete(whenExpr);
-
-      codeTriggerProgram(pParse, p->step_list, orconf); 
-
-      /* Pop the entry off the trigger stack */
-      pParse->trigStack = trigStackEntry.pNext;
-      sqlite3AuthContextPop(&sContext);
-
-      sqlite3VdbeResolveLabel(pParse->pVdbe, endTrigger);
-    }
-  }
-  return 0;
-}
-#endif /* !defined(SQLITE_OMIT_TRIGGER) */