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Overview
Comment:Size optimizations in vdbeapi.c. (CVS 1982)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:b2f3d4bb8e24212d3cef7615c24da13f29c1440c
User & Date: drh 2004-09-24 23:59:12
Context
2004-09-25
13:12
Code simplifications and size reductions. (CVS 1983) check-in: cb631a13 user: drh tags: trunk
2004-09-24
23:59
Size optimizations in vdbeapi.c. (CVS 1982) check-in: b2f3d4bb user: drh tags: trunk
23:20
Save a few bytes in utf.c. (CVS 1981) check-in: 8154d545 user: drh tags: trunk
Changes
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Changes to src/vdbeapi.c.

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const void *sqlite3_column_text16(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_text16( columnMem(pStmt,i) );
}
int sqlite3_column_type(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_type( columnMem(pStmt,i) );
}


























/*
** Return the name of the Nth column of the result set returned by SQL
** statement pStmt.
*/
const char *sqlite3_column_name(sqlite3_stmt *pStmt, int N){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pColName;

  if( N>=sqlite3_column_count(pStmt) || N<0 ){
    return 0;
  }

  pColName = &(p->aColName[N]);
  return sqlite3_value_text(pColName);
}

/*
** Return the name of the 'i'th column of the result set of SQL statement
** pStmt, encoded as UTF-16.
*/
const void *sqlite3_column_name16(sqlite3_stmt *pStmt, int N){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pColName;

  if( N>=sqlite3_column_count(pStmt) || N<0 ){
    return 0;
  }

  pColName = &(p->aColName[N]);
  return sqlite3_value_text16(pColName);
}

/*
** Return the column declaration type (if applicable) of the 'i'th column
** of the result set of SQL statement pStmt, encoded as UTF-8.
*/
const char *sqlite3_column_decltype(sqlite3_stmt *pStmt, int N){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pColName;

  if( N>=sqlite3_column_count(pStmt) || N<0 ){
    return 0;
  }

  pColName = &(p->aColName[N+sqlite3_column_count(pStmt)]);
  return sqlite3_value_text(pColName);
}

/*
** Return the column declaration type (if applicable) of the 'i'th column
** of the result set of SQL statement pStmt, encoded as UTF-16.
*/
const void *sqlite3_column_decltype16(sqlite3_stmt *pStmt, int N){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pColName;

  if( N>=sqlite3_column_count(pStmt) || N<0 ){
    return 0;
  }

  pColName = &(p->aColName[N+sqlite3_column_count(pStmt)]);
  return sqlite3_value_text16(pColName);
}

/******************************* sqlite3_bind_  ***************************
** 
** Routines used to attach values to wildcards in a compiled SQL statement.
*/
/*
................................................................................
  sqlite3VdbeMemRelease(pVar);
  pVar->flags = MEM_Null;
  sqlite3Error(p->db, SQLITE_OK, 0);
  return SQLITE_OK;
}

/*
** Bind a blob value to an SQL statement variable.
*/
int sqlite3_bind_blob(
  sqlite3_stmt *pStmt, 
  int i, 
  const void *zData, 
  int nData, 
  void (*xDel)(void*)

){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pVar;
  int rc;

  rc = vdbeUnbind(p, i);
  if( rc || zData==0 ){
    return rc;
  }
  pVar = &p->aVar[i-1];
  rc = sqlite3VdbeMemSetStr(pVar, zData, nData, 0, xDel);

  return rc;
}



















int sqlite3_bind_double(sqlite3_stmt *pStmt, int i, double rValue){
  int rc;
  Vdbe *p = (Vdbe *)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3VdbeMemSetDouble(&p->aVar[i-1], rValue);
  }
................................................................................
int sqlite3_bind_text( 
  sqlite3_stmt *pStmt, 
  int i, 
  const char *zData, 
  int nData, 
  void (*xDel)(void*)
){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pVar;
  int rc;

  rc = vdbeUnbind(p, i);
  if( rc || zData==0 ){
    return rc;
  }
  pVar = &p->aVar[i-1];
  rc = sqlite3VdbeMemSetStr(pVar, zData, nData, SQLITE_UTF8, xDel);
  if( rc ){
    return rc;
  }
  rc = sqlite3VdbeChangeEncoding(pVar, p->db->enc);
  return rc;
}
int sqlite3_bind_text16(
  sqlite3_stmt *pStmt, 
  int i, 
  const void *zData, 
  int nData, 
  void (*xDel)(void*)
){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pVar;
  int rc;

  rc = vdbeUnbind(p, i);
  if( rc || zData==0 ){
    return rc;
  }
  pVar = &p->aVar[i-1];

  rc = sqlite3VdbeMemSetStr(pVar, zData, nData, SQLITE_UTF16NATIVE, xDel);
  if( rc ){
    return rc;
  }
  rc = sqlite3VdbeChangeEncoding(pVar, p->db->enc);
  return rc;
}

/*
** Return the number of wildcards that can be potentially bound to.
** This routine is added to support DBD::SQLite.  
*/
int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){







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const void *sqlite3_column_text16(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_text16( columnMem(pStmt,i) );
}
int sqlite3_column_type(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_type( columnMem(pStmt,i) );
}

/*
** Convert the N-th element of pStmt->pColName[] into a string using
** xFunc() then return that string.  If N is out of range, return 0.
** If useType is 1, then use the second set of N elements (the datatype
** names) instead of the first set.
*/
static const void *columnName(
  sqlite3_stmt *pStmt,
  int N,
  const void *(*xFunc)(Mem*),
  int useType
){
  Vdbe *p = (Vdbe *)pStmt;
  int n = sqlite3_column_count(pStmt);

  if( p==0 || N>=n || N<0 ){
    return 0;
  }
  if( useType ){
    N += n;
  }
  return xFunc(&p->aColName[N]);
}


/*
** Return the name of the Nth column of the result set returned by SQL
** statement pStmt.
*/
const char *sqlite3_column_name(sqlite3_stmt *pStmt, int N){
  return columnName(pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, 0);








}

/*
** Return the name of the 'i'th column of the result set of SQL statement
** pStmt, encoded as UTF-16.
*/
const void *sqlite3_column_name16(sqlite3_stmt *pStmt, int N){
  return columnName(pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, 0);








}

/*
** Return the column declaration type (if applicable) of the 'i'th column
** of the result set of SQL statement pStmt, encoded as UTF-8.
*/
const char *sqlite3_column_decltype(sqlite3_stmt *pStmt, int N){
  return columnName(pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, 1);








}

/*
** Return the column declaration type (if applicable) of the 'i'th column
** of the result set of SQL statement pStmt, encoded as UTF-16.
*/
const void *sqlite3_column_decltype16(sqlite3_stmt *pStmt, int N){
  return columnName(pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, 1);








}

/******************************* sqlite3_bind_  ***************************
** 
** Routines used to attach values to wildcards in a compiled SQL statement.
*/
/*
................................................................................
  sqlite3VdbeMemRelease(pVar);
  pVar->flags = MEM_Null;
  sqlite3Error(p->db, SQLITE_OK, 0);
  return SQLITE_OK;
}

/*
** Bind a text or BLOB value.
*/
static int bindText(
  sqlite3_stmt *pStmt, 
  int i, 
  const void *zData, 
  int nData, 
  void (*xDel)(void*),
  int encoding
){
  Vdbe *p = (Vdbe *)pStmt;
  Mem *pVar;
  int rc;

  rc = vdbeUnbind(p, i);
  if( rc || zData==0 ){
    return rc;
  }
  pVar = &p->aVar[i-1];
  rc = sqlite3VdbeMemSetStr(pVar, zData, nData, encoding, xDel);
  if( rc ){
    return rc;
  }
  if( rc==SQLITE_OK && encoding!=0 ){
    rc = sqlite3VdbeChangeEncoding(pVar, p->db->enc);
  }
  return rc;
}


/*
** Bind a blob value to an SQL statement variable.
*/
int sqlite3_bind_blob(
  sqlite3_stmt *pStmt, 
  int i, 
  const void *zData, 
  int nData, 
  void (*xDel)(void*)
){
  return bindText(pStmt, i, zData, nData, xDel, 0);
}
int sqlite3_bind_double(sqlite3_stmt *pStmt, int i, double rValue){
  int rc;
  Vdbe *p = (Vdbe *)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3VdbeMemSetDouble(&p->aVar[i-1], rValue);
  }
................................................................................
int sqlite3_bind_text( 
  sqlite3_stmt *pStmt, 
  int i, 
  const char *zData, 
  int nData, 
  void (*xDel)(void*)
){
  return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF8);














}
int sqlite3_bind_text16(
  sqlite3_stmt *pStmt, 
  int i, 
  const void *zData, 
  int nData, 
  void (*xDel)(void*)
){
  return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF16NATIVE);















}

/*
** Return the number of wildcards that can be potentially bound to.
** This routine is added to support DBD::SQLite.  
*/
int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){