Bundle relevant parts of sqlite 2.8.0.

# sqlite has a completely non-restrictive license

1 files changed, 95 insertions, 0 deletions

diff --git a/ext/sqlite/libsqlite/src/vdbe.h b/ext/sqlite/libsqlite/src/vdbe.h
new file mode 100644
index 0000000000..0a885e42d4
--- /dev/null
+++ b/ext/sqlite/libsqlite/src/vdbe.h
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+/*
+** 2001 September 15
+**
+** 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.
+**
+*************************************************************************
+** 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.
+**
+** $Id$
+*/
+#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 */
+  int p3type;         /* P3_STATIC, P3_DYNAMIC or P3_POINTER */
+#ifdef VDBE_PROFILE
+  int cnt;            /* Number of times this instruction was executed */
+  long long cycles;   /* Total time spend executing this instruction */
+#endif
+};
+typedef struct VdbeOp VdbeOp;
+
+/*
+** Allowed values of VdbeOp.p3type
+*/
+#define P3_NOTUSED    0   /* The P3 parameter is not used */
+#define P3_DYNAMIC  (-1)  /* Pointer to a string obtained from sqliteMalloc() */
+#define P3_STATIC   (-2)  /* Pointer to a static string */
+#define P3_POINTER  (-3)  /* P3 is a pointer to some structure or object */
+
+/*
+** 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))
+
+/*
+** The makefile scans the vdbe.c source file and creates the "opcodes.h"
+** header file that defines a number for each opcode used by the VDBE.
+*/
+#include "opcodes.h"
+
+/*
+** Prototypes for the VDBE interface.  See comments on the implementation
+** for a description of what each of these routines does.
+*/
+Vdbe *sqliteVdbeCreate(sqlite*);
+void sqliteVdbeCreateCallback(Vdbe*, int*);
+int sqliteVdbeAddOp(Vdbe*,int,int,int);
+int sqliteVdbeAddOpList(Vdbe*, int nOp, VdbeOp const *aOp);
+void sqliteVdbeChangeP1(Vdbe*, int addr, int P1);
+void sqliteVdbeChangeP2(Vdbe*, int addr, int P2);
+void sqliteVdbeChangeP3(Vdbe*, int addr, const char *zP1, int N);
+void sqliteVdbeDequoteP3(Vdbe*, int addr);
+int sqliteVdbeFindOp(Vdbe*, int, int);
+int sqliteVdbeMakeLabel(Vdbe*);
+void sqliteVdbeDelete(Vdbe*);
+void sqliteVdbeMakeReady(Vdbe*,sqlite_callback,void*,int);
+int sqliteVdbeExec(Vdbe*);
+int sqliteVdbeList(Vdbe*);
+int sqliteVdbeFinalize(Vdbe*,char**);
+void sqliteVdbeResolveLabel(Vdbe*, int);
+int sqliteVdbeCurrentAddr(Vdbe*);
+void sqliteVdbeTrace(Vdbe*,FILE*);
+void sqliteVdbeCompressSpace(Vdbe*,int);
+
+#endif