mirror of
https://github.com/sqlite/sqlite.git
synced 2025-08-08 14:02:16 +03:00
initial check-in of the new version (CVS 1)
FossilOrigin-Name: 6f3655f79f9b6fc9fb7baaa10a7e0f2b6a512dfa
This commit is contained in:
drh
166
src/vdbe.h
Normal file
166
src/vdbe.h
Normal file
@@ -0,0 +1,166 @@
|
||||
/*
|
||||
** Copyright (c) 1999, 2000 D. Richard Hipp
|
||||
**
|
||||
** This program is free software; you can redistribute it and/or
|
||||
** modify it under the terms of the GNU General Public
|
||||
** License as published by the Free Software Foundation; either
|
||||
** version 2 of the License, or (at your option) any later version.
|
||||
**
|
||||
** This program is distributed in the hope that it will be useful,
|
||||
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
** General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU General Public
|
||||
** License along with this library; if not, write to the
|
||||
** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
** Boston, MA 02111-1307, USA.
|
||||
**
|
||||
** Author contact information:
|
||||
** drh@hwaci.com
|
||||
** http://www.hwaci.com/drh/
|
||||
**
|
||||
*************************************************************************
|
||||
** Header file for the Virtual DataBase Engine (VDBE)
|
||||
**
|
||||
** This header defines the interface to the virtual database engine
|
||||
** or VDBE. The VDBE implements an abstract machine that runs a
|
||||
** simple program to access and modify the underlying database.
|
||||
**
|
||||
** $Id: vdbe.h,v 1.1 2000/05/29 14:26:02 drh Exp $
|
||||
*/
|
||||
#ifndef _SQLITE_VDBE_H_
|
||||
#define _SQLITE_VDBE_H_
|
||||
#include <stdio.h>
|
||||
|
||||
/*
|
||||
** A single VDBE is an opaque structure named "Vdbe". Only routines
|
||||
** in the source file sqliteVdbe.c are allowed to see the insides
|
||||
** of this structure.
|
||||
*/
|
||||
typedef struct Vdbe Vdbe;
|
||||
|
||||
/*
|
||||
** A single instruction of the virtual machine has an opcode
|
||||
** and as many as three operands. The instruction is recorded
|
||||
** as an instance of the following structure:
|
||||
*/
|
||||
struct VdbeOp {
|
||||
int opcode; /* What operation to perform */
|
||||
int p1; /* First operand */
|
||||
int p2; /* Second parameter (often the jump destination) */
|
||||
char *p3; /* Third parameter */
|
||||
};
|
||||
typedef struct VdbeOp VdbeOp;
|
||||
|
||||
/*
|
||||
** The following macro converts a relative address in the p2 field
|
||||
** of a VdbeOp structure into a negative number so that
|
||||
** sqliteVdbeAddOpList() knows that the address is relative. Calling
|
||||
** the macro again restores the address.
|
||||
*/
|
||||
#define ADDR(X) (-1-(X))
|
||||
|
||||
/*
|
||||
** These are the available opcodes.
|
||||
**
|
||||
** If any of the values changes or if opcodes are added or removed,
|
||||
** be sure to also update the zOpName[] array in sqliteVdbe.c to
|
||||
** mirror the change.
|
||||
**
|
||||
** The source tree contains an AWK script named renumberOps.awk that
|
||||
** can be used to renumber these opcodes when new opcodes are inserted.
|
||||
*/
|
||||
#define OP_Open 1
|
||||
#define OP_Close 2
|
||||
#define OP_Destroy 3
|
||||
#define OP_Fetch 4
|
||||
#define OP_New 5
|
||||
#define OP_Put 6
|
||||
#define OP_Delete 7
|
||||
#define OP_Field 8
|
||||
#define OP_Key 9
|
||||
#define OP_Rewind 10
|
||||
#define OP_Next 11
|
||||
#define OP_ResetIdx 12
|
||||
#define OP_NextIdx 13
|
||||
#define OP_PutIdx 14
|
||||
#define OP_DeleteIdx 15
|
||||
|
||||
#define OP_ListOpen 16
|
||||
#define OP_ListWrite 17
|
||||
#define OP_ListRewind 18
|
||||
#define OP_ListRead 19
|
||||
#define OP_ListClose 20
|
||||
|
||||
#define OP_SortOpen 21
|
||||
#define OP_SortPut 22
|
||||
#define OP_SortMakeRec 23
|
||||
#define OP_SortMakeKey 24
|
||||
#define OP_Sort 25
|
||||
#define OP_SortNext 26
|
||||
#define OP_SortKey 27
|
||||
#define OP_SortCallback 28
|
||||
#define OP_SortClose 29
|
||||
|
||||
#define OP_MakeRecord 30
|
||||
#define OP_MakeKey 31
|
||||
|
||||
#define OP_Goto 32
|
||||
#define OP_If 33
|
||||
#define OP_Halt 34
|
||||
|
||||
#define OP_ColumnCount 35
|
||||
#define OP_ColumnName 36
|
||||
#define OP_Callback 37
|
||||
|
||||
#define OP_Integer 38
|
||||
#define OP_String 39
|
||||
#define OP_Pop 40
|
||||
#define OP_Dup 41
|
||||
#define OP_Pull 42
|
||||
|
||||
#define OP_Add 43
|
||||
#define OP_AddImm 44
|
||||
#define OP_Subtract 45
|
||||
#define OP_Multiply 46
|
||||
#define OP_Divide 47
|
||||
#define OP_Min 48
|
||||
#define OP_Max 49
|
||||
#define OP_Eq 50
|
||||
#define OP_Ne 51
|
||||
#define OP_Lt 52
|
||||
#define OP_Le 53
|
||||
#define OP_Gt 54
|
||||
#define OP_Ge 55
|
||||
#define OP_IsNull 56
|
||||
#define OP_NotNull 57
|
||||
#define OP_Negative 58
|
||||
#define OP_And 59
|
||||
#define OP_Or 60
|
||||
#define OP_Not 61
|
||||
#define OP_Concat 62
|
||||
#define OP_Noop 63
|
||||
|
||||
#define OP_MAX 63
|
||||
|
||||
/*
|
||||
** Prototypes for the VDBE interface. See comments on the implementation
|
||||
** for a description of what each of these routines does.
|
||||
*/
|
||||
Vdbe *sqliteVdbeCreate(Dbbe*);
|
||||
int sqliteVdbeAddOp(Vdbe*,int,int,int,const char*,int);
|
||||
int sqliteVdbeAddOpList(Vdbe*, int nOp, VdbeOp const *aOp);
|
||||
void sqliteVdbeChangeP3(Vdbe*, int addr, const char *zP1, int N);
|
||||
void sqliteVdbeDequoteP3(Vdbe*, int addr);
|
||||
int sqliteVdbeMakeLabel(Vdbe*);
|
||||
void sqliteVdbeDelete(Vdbe*);
|
||||
int sqliteVdbeOpcode(const char *zName);
|
||||
int sqliteVdbeExec(Vdbe*,sqlite_callback,void*,char**);
|
||||
int sqliteVdbeList(Vdbe*,sqlite_callback,void*,char**);
|
||||
void sqliteVdbeResolveLabel(Vdbe*, int);
|
||||
int sqliteVdbeCurrentAddr(Vdbe*);
|
||||
void sqliteVdbeTrace(Vdbe*,FILE*);
|
||||
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user