--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/engine/sqlite/src/sqliteInt.h Thu Feb 25 14:29:19 2010 +0000
@@ -0,0 +1,2073 @@
+/*
+** 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.
+**
+*************************************************************************
+** Internal interface definitions for SQLite.
+**
+** @(#) $Id: sqliteInt.h 1282 2008-11-13 09:31:33Z LarsPson $
+*/
+#ifndef _SQLITEINT_H_
+#define _SQLITEINT_H_
+
+/*
+** The macro unlikely() is a hint that surrounds a boolean
+** expression that is usually false. Macro likely() surrounds
+** a boolean expression that is usually true. GCC is able to
+** use these hints to generate better code, sometimes.
+*/
+#if defined(__GNUC__)
+# define likely(X) __builtin_expect((X),1)
+# define unlikely(X) __builtin_expect((X),0)
+#else
+# define likely(X) !!(X)
+# define unlikely(X) !!(X)
+#endif
+
+
+/*
+** These #defines should enable >2GB file support on Posix if the
+** underlying operating system supports it. If the OS lacks
+** large file support, or if the OS is windows, these should be no-ops.
+**
+** Ticket #2739: The _LARGEFILE_SOURCE macro must appear before any
+** system #includes. Hence, this block of code must be the very first
+** code in all source files.
+**
+** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch
+** on the compiler command line. This is necessary if you are compiling
+** on a recent machine (ex: RedHat 7.2) but you want your code to work
+** on an older machine (ex: RedHat 6.0). If you compile on RedHat 7.2
+** without this option, LFS is enable. But LFS does not exist in the kernel
+** in RedHat 6.0, so the code won't work. Hence, for maximum binary
+** portability you should omit LFS.
+**
+** Similar is true for MacOS. LFS is only supported on MacOS 9 and later.
+*/
+#ifndef SQLITE_DISABLE_LFS
+# define _LARGE_FILE 1
+# ifndef _FILE_OFFSET_BITS
+# define _FILE_OFFSET_BITS 64
+# endif
+# define _LARGEFILE_SOURCE 1
+#endif
+
+
+#include "sqliteLimit.h"
+
+/*
+** For testing purposes, the various size limit constants are really
+** variables that we can modify in the testfixture.
+*/
+#ifdef SQLITE_TEST
+ #undef SQLITE_MAX_LENGTH
+ #undef SQLITE_MAX_COLUMN
+ #undef SQLITE_MAX_SQL_LENGTH
+ #undef SQLITE_MAX_EXPR_DEPTH
+ #undef SQLITE_MAX_COMPOUND_SELECT
+ #undef SQLITE_MAX_VDBE_OP
+ #undef SQLITE_MAX_FUNCTION_ARG
+ #undef SQLITE_MAX_VARIABLE_NUMBER
+ #undef SQLITE_MAX_PAGE_SIZE
+ #undef SQLITE_MAX_PAGE_COUNT
+ #undef SQLITE_MAX_LIKE_PATTERN_LENGTH
+
+ #define SQLITE_MAX_LENGTH sqlite3MAX_LENGTH
+ #define SQLITE_MAX_COLUMN sqlite3MAX_COLUMN
+ #define SQLITE_MAX_SQL_LENGTH sqlite3MAX_SQL_LENGTH
+ #define SQLITE_MAX_EXPR_DEPTH sqlite3MAX_EXPR_DEPTH
+ #define SQLITE_MAX_COMPOUND_SELECT sqlite3MAX_COMPOUND_SELECT
+ #define SQLITE_MAX_VDBE_OP sqlite3MAX_VDBE_OP
+ #define SQLITE_MAX_FUNCTION_ARG sqlite3MAX_FUNCTION_ARG
+ #define SQLITE_MAX_VARIABLE_NUMBER sqlite3MAX_VARIABLE_NUMBER
+ #define SQLITE_MAX_PAGE_SIZE sqlite3MAX_PAGE_SIZE
+ #define SQLITE_MAX_PAGE_COUNT sqlite3MAX_PAGE_COUNT
+ #define SQLITE_MAX_LIKE_PATTERN_LENGTH sqlite3MAX_LIKE_PATTERN_LENGTH
+
+ extern int sqlite3MAX_LENGTH;
+ extern int sqlite3MAX_COLUMN;
+ extern int sqlite3MAX_SQL_LENGTH;
+ extern int sqlite3MAX_EXPR_DEPTH;
+ extern int sqlite3MAX_COMPOUND_SELECT;
+ extern int sqlite3MAX_VDBE_OP;
+ extern int sqlite3MAX_FUNCTION_ARG;
+ extern int sqlite3MAX_VARIABLE_NUMBER;
+ extern int sqlite3MAX_PAGE_SIZE;
+ extern int sqlite3MAX_PAGE_COUNT;
+ extern int sqlite3MAX_LIKE_PATTERN_LENGTH;
+#endif
+
+
+/*
+** The SQLITE_THREADSAFE macro must be defined as either 0 or 1.
+** Older versions of SQLite used an optional THREADSAFE macro.
+** We support that for legacy
+*/
+#if !defined(SQLITE_THREADSAFE)
+#if defined(THREADSAFE)
+# define SQLITE_THREADSAFE THREADSAFE
+#else
+# define SQLITE_THREADSAFE 1
+#endif
+#endif
+
+/*
+** We need to define _XOPEN_SOURCE as follows in order to enable
+** recursive mutexes on most unix systems. But Mac OS X is different.
+** The _XOPEN_SOURCE define causes problems for Mac OS X we are told,
+** so it is omitted there. See ticket #2673.
+**
+** Later we learn that _XOPEN_SOURCE is poorly or incorrectly
+** implemented on some systems. So we avoid defining it at all
+** if it is already defined or if it is unneeded because we are
+** not doing a threadsafe build. Ticket #2681.
+**
+** See also ticket #2741.
+*/
+#if !defined(_XOPEN_SOURCE) && !defined(__DARWIN__) && SQLITE_THREADSAFE
+# define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */
+#endif
+
+#if defined(SQLITE_TCL) || defined(TCLSH)
+# include <tcl.h>
+#endif
+
+/*
+** Many people are failing to set -DNDEBUG=1 when compiling SQLite.
+** Setting NDEBUG makes the code smaller and run faster. So the following
+** lines are added to automatically set NDEBUG unless the -DSQLITE_DEBUG=1
+** option is set. Thus NDEBUG becomes an opt-in rather than an opt-out
+** feature.
+*/
+#if !defined(NDEBUG) && !defined(SQLITE_DEBUG)
+# define NDEBUG 1
+#endif
+
+#include "sqlite3.h"
+#include "hash.h"
+#include "parse.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stddef.h>
+
+#define sqlite3_isnan(X) ((X)!=(X))
+
+/*
+** If compiling for a processor that lacks floating point support,
+** substitute integer for floating-point
+*/
+#ifdef SQLITE_OMIT_FLOATING_POINT
+# define double sqlite_int64
+# define LONGDOUBLE_TYPE sqlite_int64
+# ifndef SQLITE_BIG_DBL
+# define SQLITE_BIG_DBL (0x7fffffffffffffff)
+# endif
+# define SQLITE_OMIT_DATETIME_FUNCS 1
+# define SQLITE_OMIT_TRACE 1
+# undef SQLITE_MIXED_ENDIAN_64BIT_FLOAT
+#endif
+#ifndef SQLITE_BIG_DBL
+# define SQLITE_BIG_DBL (1e99)
+#endif
+
+/*
+** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0
+** afterward. Having this macro allows us to cause the C compiler
+** to omit code used by TEMP tables without messy #ifndef statements.
+*/
+#ifdef SQLITE_OMIT_TEMPDB
+#define OMIT_TEMPDB 1
+#else
+#define OMIT_TEMPDB 0
+#endif
+
+/*
+** If the following macro is set to 1, then NULL values are considered
+** distinct when determining whether or not two entries are the same
+** in a UNIQUE index. This is the way PostgreSQL, Oracle, DB2, MySQL,
+** OCELOT, and Firebird all work. The SQL92 spec explicitly says this
+** is the way things are suppose to work.
+**
+** If the following macro is set to 0, the NULLs are indistinct for
+** a UNIQUE index. In this mode, you can only have a single NULL entry
+** for a column declared UNIQUE. This is the way Informix and SQL Server
+** work.
+*/
+#define NULL_DISTINCT_FOR_UNIQUE 1
+
+/*
+** The "file format" number is an integer that is incremented whenever
+** the VDBE-level file format changes. The following macros define the
+** the default file format for new databases and the maximum file format
+** that the library can read.
+*/
+#define SQLITE_MAX_FILE_FORMAT 4
+#ifndef SQLITE_DEFAULT_FILE_FORMAT
+# define SQLITE_DEFAULT_FILE_FORMAT 1
+#endif
+
+/*
+** Provide a default value for TEMP_STORE in case it is not specified
+** on the command-line
+*/
+#ifndef TEMP_STORE
+# define TEMP_STORE 1
+#endif
+
+/*
+** GCC does not define the offsetof() macro so we'll have to do it
+** ourselves.
+*/
+#ifndef offsetof
+#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD))
+#endif
+
+/*
+** Check to see if this machine uses EBCDIC. (Yes, believe it or
+** not, there are still machines out there that use EBCDIC.)
+*/
+#if 'A' == '\301'
+# define SQLITE_EBCDIC 1
+#else
+# define SQLITE_ASCII 1
+#endif
+
+/*
+** Integers of known sizes. These typedefs might change for architectures
+** where the sizes very. Preprocessor macros are available so that the
+** types can be conveniently redefined at compile-type. Like this:
+**
+** cc '-DUINTPTR_TYPE=long long int' ...
+*/
+#ifndef UINT32_TYPE
+# define UINT32_TYPE unsigned int
+#endif
+#ifndef UINT16_TYPE
+# define UINT16_TYPE unsigned short int
+#endif
+#ifndef INT16_TYPE
+# define INT16_TYPE short int
+#endif
+#ifndef UINT8_TYPE
+# define UINT8_TYPE unsigned char
+#endif
+#ifndef INT8_TYPE
+# define INT8_TYPE signed char
+#endif
+#ifndef LONGDOUBLE_TYPE
+# define LONGDOUBLE_TYPE long double
+#endif
+typedef sqlite_int64 i64; /* 8-byte signed integer */
+typedef sqlite_uint64 u64; /* 8-byte unsigned integer */
+typedef UINT32_TYPE u32; /* 4-byte unsigned integer */
+typedef UINT16_TYPE u16; /* 2-byte unsigned integer */
+typedef INT16_TYPE i16; /* 2-byte signed integer */
+typedef UINT8_TYPE u8; /* 1-byte unsigned integer */
+typedef UINT8_TYPE i8; /* 1-byte signed integer */
+
+/*
+** Macros to determine whether the machine is big or little endian,
+** evaluated at runtime.
+*/
+#ifdef SQLITE_AMALGAMATION
+const int sqlite3One;
+#else
+extern const int sqlite3one;
+#endif
+#if defined(i386) || defined(__i386__) || defined(_M_IX86)
+# define SQLITE_BIGENDIAN 0
+# define SQLITE_LITTLEENDIAN 1
+# define SQLITE_UTF16NATIVE SQLITE_UTF16LE
+#else
+# define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0)
+# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
+# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)
+#endif
+
+/*
+** An instance of the following structure is used to store the busy-handler
+** callback for a given sqlite handle.
+**
+** The sqlite.busyHandler member of the sqlite struct contains the busy
+** callback for the database handle. Each pager opened via the sqlite
+** handle is passed a pointer to sqlite.busyHandler. The busy-handler
+** callback is currently invoked only from within pager.c.
+*/
+typedef struct BusyHandler BusyHandler;
+struct BusyHandler {
+ int (*xFunc)(void *,int); /* The busy callback */
+ void *pArg; /* First arg to busy callback */
+ int nBusy; /* Incremented with each busy call */
+};
+
+/*
+** Defer sourcing vdbe.h and btree.h until after the "u8" and
+** "BusyHandler typedefs.
+*/
+#include "btree.h"
+#include "vdbe.h"
+#include "pager.h"
+
+
+/*
+** Name of the master database table. The master database table
+** is a special table that holds the names and attributes of all
+** user tables and indices.
+*/
+#define MASTER_NAME "sqlite_master"
+#define TEMP_MASTER_NAME "sqlite_temp_master"
+
+/*
+** The root-page of the master database table.
+*/
+#define MASTER_ROOT 1
+
+/*
+** The name of the schema table.
+*/
+#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME)
+
+/*
+** A convenience macro that returns the number of elements in
+** an array.
+*/
+#define ArraySize(X) (sizeof(X)/sizeof(X[0]))
+
+/*
+** Forward references to structures
+*/
+typedef struct AggInfo AggInfo;
+typedef struct AuthContext AuthContext;
+typedef struct CollSeq CollSeq;
+typedef struct Column Column;
+typedef struct Db Db;
+typedef struct Schema Schema;
+typedef struct Expr Expr;
+typedef struct ExprList ExprList;
+typedef struct FKey FKey;
+typedef struct FuncDef FuncDef;
+typedef struct IdList IdList;
+typedef struct Index Index;
+typedef struct KeyClass KeyClass;
+typedef struct KeyInfo KeyInfo;
+typedef struct Module Module;
+typedef struct NameContext NameContext;
+typedef struct Parse Parse;
+typedef struct Select Select;
+typedef struct SrcList SrcList;
+typedef struct StrAccum StrAccum;
+typedef struct Table Table;
+typedef struct TableLock TableLock;
+typedef struct Token Token;
+typedef struct TriggerStack TriggerStack;
+typedef struct TriggerStep TriggerStep;
+typedef struct Trigger Trigger;
+typedef struct WhereInfo WhereInfo;
+typedef struct WhereLevel WhereLevel;
+
+#include "os.h"
+#include "mutex.h"
+
+
+/*
+** If X is a character that can be used in an identifier then
+** IdChar(X) will be true. Otherwise it is false.
+**
+** For ASCII, any character with the high-order bit set is
+** allowed in an identifier. For 7-bit characters,
+** sqlite3IsIdChar[X] must be 1.
+**
+** For EBCDIC, the rules are more complex but have the same
+** end result.
+**
+** Ticket #1066. the SQL standard does not allow '$' in the
+** middle of identfiers. But many SQL implementations do.
+** SQLite will allow '$' in identifiers for compatibility.
+** But the feature is undocumented.
+*/
+#ifdef SQLITE_ASCII
+const char sqlite3IsAsciiIdChar[] = {
+/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */
+ 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 2x */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */
+};
+#define IdChar(C) (((c=C)&0x80)!=0 || (c>0x1f && sqlite3IsAsciiIdChar[c-0x20]))
+#endif
+#ifdef SQLITE_EBCDIC
+const char sqlite3IsEbcdicIdChar[] = {
+/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */
+ 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 4x */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, /* 5x */
+ 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, /* 6x */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, /* 7x */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, /* 8x */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 0, /* 9x */
+ 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, /* Ax */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* Bx */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, /* Cx */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, /* Dx */
+ 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, /* Ex */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, /* Fx */
+};
+#define IdChar(C) (((c=C)>=0x42 && sqlite3IsEbcdicIdChar[c-0x40]))
+#endif
+
+/*
+** Each database file to be accessed by the system is an instance
+** of the following structure. There are normally two of these structures
+** in the sqlite.aDb[] array. aDb[0] is the main database file and
+** aDb[1] is the database file used to hold temporary tables. Additional
+** databases may be attached.
+*/
+struct Db {
+ char *zName; /* Name of this database */
+ Btree *pBt; /* The B*Tree structure for this database file */
+ u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */
+ u8 safety_level; /* How aggressive at synching data to disk */
+ void *pAux; /* Auxiliary data. Usually NULL */
+ void (*xFreeAux)(void*); /* Routine to free pAux */
+ Schema *pSchema; /* Pointer to database schema (possibly shared) */
+};
+
+/*
+** An instance of the following structure stores a database schema.
+**
+** If there are no virtual tables configured in this schema, the
+** Schema.db variable is set to NULL. After the first virtual table
+** has been added, it is set to point to the database connection
+** used to create the connection. Once a virtual table has been
+** added to the Schema structure and the Schema.db variable populated,
+** only that database connection may use the Schema to prepare
+** statements.
+*/
+struct Schema {
+ int schema_cookie; /* Database schema version number for this file */
+ Hash tblHash; /* All tables indexed by name */
+ Hash idxHash; /* All (named) indices indexed by name */
+ Hash trigHash; /* All triggers indexed by name */
+ Hash aFKey; /* Foreign keys indexed by to-table */
+ Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */
+ u8 file_format; /* Schema format version for this file */
+ u8 enc; /* Text encoding used by this database */
+ u16 flags; /* Flags associated with this schema */
+ int cache_size; /* Number of pages to use in the cache */
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ sqlite3 *db; /* "Owner" connection. See comment above */
+#endif
+};
+
+/*
+** These macros can be used to test, set, or clear bits in the
+** Db.flags field.
+*/
+#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))==(P))
+#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))!=0)
+#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->flags|=(P)
+#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P)
+
+/*
+** Allowed values for the DB.flags field.
+**
+** The DB_SchemaLoaded flag is set after the database schema has been
+** read into internal hash tables.
+**
+** DB_UnresetViews means that one or more views have column names that
+** have been filled out. If the schema changes, these column names might
+** changes and so the view will need to be reset.
+*/
+#define DB_SchemaLoaded 0x0001 /* The schema has been loaded */
+#define DB_UnresetViews 0x0002 /* Some views have defined column names */
+#define DB_Empty 0x0004 /* The file is empty (length 0 bytes) */
+
+
+/*
+** Each database is an instance of the following structure.
+**
+** The sqlite.lastRowid records the last insert rowid generated by an
+** insert statement. Inserts on views do not affect its value. Each
+** trigger has its own context, so that lastRowid can be updated inside
+** triggers as usual. The previous value will be restored once the trigger
+** exits. Upon entering a before or instead of trigger, lastRowid is no
+** longer (since after version 2.8.12) reset to -1.
+**
+** The sqlite.nChange does not count changes within triggers and keeps no
+** context. It is reset at start of sqlite3_exec.
+** The sqlite.lsChange represents the number of changes made by the last
+** insert, update, or delete statement. It remains constant throughout the
+** length of a statement and is then updated by OP_SetCounts. It keeps a
+** context stack just like lastRowid so that the count of changes
+** within a trigger is not seen outside the trigger. Changes to views do not
+** affect the value of lsChange.
+** The sqlite.csChange keeps track of the number of current changes (since
+** the last statement) and is used to update sqlite_lsChange.
+**
+** The member variables sqlite.errCode, sqlite.zErrMsg and sqlite.zErrMsg16
+** store the most recent error code and, if applicable, string. The
+** internal function sqlite3Error() is used to set these variables
+** consistently.
+*/
+struct sqlite3 {
+ sqlite3_vfs *pVfs; /* OS Interface */
+ int nDb; /* Number of backends currently in use */
+ Db *aDb; /* All backends */
+ int flags; /* Miscellanous flags. See below */
+ int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
+ int errCode; /* Most recent error code (SQLITE_*) */
+ int errMask; /* & result codes with this before returning */
+ u8 autoCommit; /* The auto-commit flag. */
+ u8 temp_store; /* 1: file 2: memory 0: default */
+ u8 mallocFailed; /* True if we have seen a malloc failure */
+ char nextAutovac; /* Autovac setting after VACUUM if >=0 */
+ int nTable; /* Number of tables in the database */
+ CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
+ i64 lastRowid; /* ROWID of most recent insert (see above) */
+ i64 priorNewRowid; /* Last randomly generated ROWID */
+ int magic; /* Magic number for detect library misuse */
+ int nChange; /* Value returned by sqlite3_changes() */
+ int nTotalChange; /* Value returned by sqlite3_total_changes() */
+ sqlite3_mutex *mutex; /* Connection mutex */
+ struct sqlite3InitInfo { /* Information used during initialization */
+ int iDb; /* When back is being initialized */
+ int newTnum; /* Rootpage of table being initialized */
+ u8 busy; /* TRUE if currently initializing */
+ } init;
+ int nExtension; /* Number of loaded extensions */
+ void **aExtension; /* Array of shared libraray handles */
+ struct Vdbe *pVdbe; /* List of active virtual machines */
+ int activeVdbeCnt; /* Number of vdbes currently executing */
+ void (*xTrace)(void*,const char*); /* Trace function */
+ void *pTraceArg; /* Argument to the trace function */
+ void (*xProfile)(void*,const char*,u64); /* Profiling function */
+ void *pProfileArg; /* Argument to profile function */
+ void *pCommitArg; /* Argument to xCommitCallback() */
+ int (*xCommitCallback)(void*); /* Invoked at every commit. */
+ void *pRollbackArg; /* Argument to xRollbackCallback() */
+ void (*xRollbackCallback)(void*); /* Invoked at every commit. */
+ void *pUpdateArg;
+ void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64);
+ void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*);
+ void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*);
+ void *pCollNeededArg;
+ sqlite3_value *pErr; /* Most recent error message */
+ char *zErrMsg; /* Most recent error message (UTF-8 encoded) */
+ char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */
+ union {
+ int isInterrupted; /* True if sqlite3_interrupt has been called */
+ double notUsed1; /* Spacer */
+ } u1;
+#ifndef SQLITE_OMIT_AUTHORIZATION
+ int (*xAuth)(void*,int,const char*,const char*,const char*,const char*);
+ /* Access authorization function */
+ void *pAuthArg; /* 1st argument to the access auth function */
+#endif
+#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
+ int (*xProgress)(void *); /* The progress callback */
+ void *pProgressArg; /* Argument to the progress callback */
+ int nProgressOps; /* Number of opcodes for progress callback */
+#endif
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ Hash aModule; /* populated by sqlite3_create_module() */
+ Table *pVTab; /* vtab with active Connect/Create method */
+ sqlite3_vtab **aVTrans; /* Virtual tables with open transactions */
+ int nVTrans; /* Allocated size of aVTrans */
+#endif
+ Hash aFunc; /* All functions that can be in SQL exprs */
+ Hash aCollSeq; /* All collating sequences */
+ BusyHandler busyHandler; /* Busy callback */
+ int busyTimeout; /* Busy handler timeout, in msec */
+ Db aDbStatic[2]; /* Static space for the 2 default backends */
+#ifdef SQLITE_SSE
+ sqlite3_stmt *pFetch; /* Used by SSE to fetch stored statements */
+#endif
+ u8 dfltLockMode; /* Default locking-mode for attached dbs */
+};
+
+/*
+** A macro to discover the encoding of a database.
+*/
+#define ENC(db) ((db)->aDb[0].pSchema->enc)
+
+/*
+** Possible values for the sqlite.flags and or Db.flags fields.
+**
+** On sqlite.flags, the SQLITE_InTrans value means that we have
+** executed a BEGIN. On Db.flags, SQLITE_InTrans means a statement
+** transaction is active on that particular database file.
+*/
+#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */
+#define SQLITE_InTrans 0x00000008 /* True if in a transaction */
+#define SQLITE_InternChanges 0x00000010 /* Uncommitted Hash table changes */
+#define SQLITE_FullColNames 0x00000020 /* Show full column names on SELECT */
+#define SQLITE_ShortColNames 0x00000040 /* Show short columns names */
+#define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */
+ /* DELETE, or UPDATE and return */
+ /* the count using a callback. */
+#define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */
+ /* result set is empty */
+#define SQLITE_SqlTrace 0x00000200 /* Debug print SQL as it executes */
+#define SQLITE_VdbeListing 0x00000400 /* Debug listings of VDBE programs */
+#define SQLITE_WriteSchema 0x00000800 /* OK to update SQLITE_MASTER */
+#define SQLITE_NoReadlock 0x00001000 /* Readlocks are omitted when
+ ** accessing read-only databases */
+#define SQLITE_IgnoreChecks 0x00002000 /* Do not enforce check constraints */
+#define SQLITE_ReadUncommitted 0x00004000 /* For shared-cache mode */
+#define SQLITE_LegacyFileFmt 0x00008000 /* Create new databases in format 1 */
+#define SQLITE_FullFSync 0x00010000 /* Use full fsync on the backend */
+#define SQLITE_LoadExtension 0x00020000 /* Enable load_extension */
+
+#define SQLITE_RecoveryMode 0x00040000 /* Ignore schema errors */
+#define SQLITE_SharedCache 0x00080000 /* Cache sharing is enabled */
+#define SQLITE_Vtab 0x00100000 /* There exists a virtual table */
+
+/*
+** Possible values for the sqlite.magic field.
+** The numbers are obtained at random and have no special meaning, other
+** than being distinct from one another.
+*/
+#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */
+#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */
+#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */
+#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */
+
+/*
+** Each SQL function is defined by an instance of the following
+** structure. A pointer to this structure is stored in the sqlite.aFunc
+** hash table. When multiple functions have the same name, the hash table
+** points to a linked list of these structures.
+*/
+struct FuncDef {
+ i16 nArg; /* Number of arguments. -1 means unlimited */
+ u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */
+ u8 needCollSeq; /* True if sqlite3GetFuncCollSeq() might be called */
+ u8 flags; /* Some combination of SQLITE_FUNC_* */
+ void *pUserData; /* User data parameter */
+ FuncDef *pNext; /* Next function with same name */
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
+ void (*xFinalize)(sqlite3_context*); /* Aggregate finializer */
+ char zName[1]; /* SQL name of the function. MUST BE LAST */
+};
+
+/*
+** Each SQLite module (virtual table definition) is defined by an
+** instance of the following structure, stored in the sqlite3.aModule
+** hash table.
+*/
+struct Module {
+ const sqlite3_module *pModule; /* Callback pointers */
+ const char *zName; /* Name passed to create_module() */
+ void *pAux; /* pAux passed to create_module() */
+ void (*xDestroy)(void *); /* Module destructor function */
+};
+
+/*
+** Possible values for FuncDef.flags
+*/
+#define SQLITE_FUNC_LIKE 0x01 /* Candidate for the LIKE optimization */
+#define SQLITE_FUNC_CASE 0x02 /* Case-sensitive LIKE-type function */
+#define SQLITE_FUNC_EPHEM 0x04 /* Ephermeral. Delete with VDBE */
+
+/*
+** information about each column of an SQL table is held in an instance
+** of this structure.
+*/
+struct Column {
+ char *zName; /* Name of this column */
+ Expr *pDflt; /* Default value of this column */
+ char *zType; /* Data type for this column */
+ char *zColl; /* Collating sequence. If NULL, use the default */
+ u8 notNull; /* True if there is a NOT NULL constraint */
+ u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */
+ char affinity; /* One of the SQLITE_AFF_... values */
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ u8 isHidden; /* True if this column is 'hidden' */
+#endif
+};
+
+/*
+** A "Collating Sequence" is defined by an instance of the following
+** structure. Conceptually, a collating sequence consists of a name and
+** a comparison routine that defines the order of that sequence.
+**
+** There may two seperate implementations of the collation function, one
+** that processes text in UTF-8 encoding (CollSeq.xCmp) and another that
+** processes text encoded in UTF-16 (CollSeq.xCmp16), using the machine
+** native byte order. When a collation sequence is invoked, SQLite selects
+** the version that will require the least expensive encoding
+** translations, if any.
+**
+** The CollSeq.pUser member variable is an extra parameter that passed in
+** as the first argument to the UTF-8 comparison function, xCmp.
+** CollSeq.pUser16 is the equivalent for the UTF-16 comparison function,
+** xCmp16.
+**
+** If both CollSeq.xCmp and CollSeq.xCmp16 are NULL, it means that the
+** collating sequence is undefined. Indices built on an undefined
+** collating sequence may not be read or written.
+*/
+struct CollSeq {
+ char *zName; /* Name of the collating sequence, UTF-8 encoded */
+ u8 enc; /* Text encoding handled by xCmp() */
+ u8 type; /* One of the SQLITE_COLL_... values below */
+ void *pUser; /* First argument to xCmp() */
+ int (*xCmp)(void*,int, const void*, int, const void*);
+ void (*xDel)(void*); /* Destructor for pUser */
+};
+
+/*
+** Allowed values of CollSeq flags:
+*/
+#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
+#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
+#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
+#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
+
+/*
+** A sort order can be either ASC or DESC.
+*/
+#define SQLITE_SO_ASC 0 /* Sort in ascending order */
+#define SQLITE_SO_DESC 1 /* Sort in ascending order */
+
+/*
+** Column affinity types.
+**
+** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and
+** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve
+** the speed a little by number the values consecutively.
+**
+** But rather than start with 0 or 1, we begin with 'a'. That way,
+** when multiple affinity types are concatenated into a string and
+** used as the P3 operand, they will be more readable.
+**
+** Note also that the numeric types are grouped together so that testing
+** for a numeric type is a single comparison.
+*/
+#define SQLITE_AFF_TEXT 'a'
+#define SQLITE_AFF_NONE 'b'
+#define SQLITE_AFF_NUMERIC 'c'
+#define SQLITE_AFF_INTEGER 'd'
+#define SQLITE_AFF_REAL 'e'
+
+#define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC)
+
+/*
+** Each SQL table is represented in memory by an instance of the
+** following structure.
+**
+** Table.zName is the name of the table. The case of the original
+** CREATE TABLE statement is stored, but case is not significant for
+** comparisons.
+**
+** Table.nCol is the number of columns in this table. Table.aCol is a
+** pointer to an array of Column structures, one for each column.
+**
+** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of
+** the column that is that key. Otherwise Table.iPKey is negative. Note
+** that the datatype of the PRIMARY KEY must be INTEGER for this field to
+** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of
+** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid
+** is generated for each row of the table. Table.hasPrimKey is true if
+** the table has any PRIMARY KEY, INTEGER or otherwise.
+**
+** Table.tnum is the page number for the root BTree page of the table in the
+** database file. If Table.iDb is the index of the database table backend
+** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that
+** holds temporary tables and indices. If Table.isEphem
+** is true, then the table is stored in a file that is automatically deleted
+** when the VDBE cursor to the table is closed. In this case Table.tnum
+** refers VDBE cursor number that holds the table open, not to the root
+** page number. Transient tables are used to hold the results of a
+** sub-query that appears instead of a real table name in the FROM clause
+** of a SELECT statement.
+*/
+struct Table {
+ char *zName; /* Name of the table */
+ int nCol; /* Number of columns in this table */
+ Column *aCol; /* Information about each column */
+ int iPKey; /* If not less then 0, use aCol[iPKey] as the primary key */
+ Index *pIndex; /* List of SQL indexes on this table. */
+ int tnum; /* Root BTree node for this table (see note above) */
+ Select *pSelect; /* NULL for tables. Points to definition if a view. */
+ int nRef; /* Number of pointers to this Table */
+ Trigger *pTrigger; /* List of SQL triggers on this table */
+ FKey *pFKey; /* Linked list of all foreign keys in this table */
+ char *zColAff; /* String defining the affinity of each column */
+#ifndef SQLITE_OMIT_CHECK
+ Expr *pCheck; /* The AND of all CHECK constraints */
+#endif
+#ifndef SQLITE_OMIT_ALTERTABLE
+ int addColOffset; /* Offset in CREATE TABLE statement to add a new column */
+#endif
+ u8 readOnly; /* True if this table should not be written by the user */
+ u8 isEphem; /* True if created using OP_OpenEphermeral */
+ u8 hasPrimKey; /* True if there exists a primary key */
+ u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */
+ u8 autoInc; /* True if the integer primary key is autoincrement */
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ u8 isVirtual; /* True if this is a virtual table */
+ u8 isCommit; /* True once the CREATE TABLE has been committed */
+ Module *pMod; /* Pointer to the implementation of the module */
+ sqlite3_vtab *pVtab; /* Pointer to the module instance */
+ int nModuleArg; /* Number of arguments to the module */
+ char **azModuleArg; /* Text of all module args. [0] is module name */
+#endif
+ Schema *pSchema; /* Schema that contains this table */
+};
+
+/*
+** Test to see whether or not a table is a virtual table. This is
+** done as a macro so that it will be optimized out when virtual
+** table support is omitted from the build.
+*/
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+# define IsVirtual(X) ((X)->isVirtual)
+# define IsHiddenColumn(X) ((X)->isHidden)
+#else
+# define IsVirtual(X) 0
+# define IsHiddenColumn(X) 0
+#endif
+
+/*
+** Each foreign key constraint is an instance of the following structure.
+**
+** A foreign key is associated with two tables. The "from" table is
+** the table that contains the REFERENCES clause that creates the foreign
+** key. The "to" table is the table that is named in the REFERENCES clause.
+** Consider this example:
+**
+** CREATE TABLE ex1(
+** a INTEGER PRIMARY KEY,
+** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x)
+** );
+**
+** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2".
+**
+** Each REFERENCES clause generates an instance of the following structure
+** which is attached to the from-table. The to-table need not exist when
+** the from-table is created. The existance of the to-table is not checked
+** until an attempt is made to insert data into the from-table.
+**
+** The sqlite.aFKey hash table stores pointers to this structure
+** given the name of a to-table. For each to-table, all foreign keys
+** associated with that table are on a linked list using the FKey.pNextTo
+** field.
+*/
+struct FKey {
+ Table *pFrom; /* The table that constains the REFERENCES clause */
+ FKey *pNextFrom; /* Next foreign key in pFrom */
+ char *zTo; /* Name of table that the key points to */
+ FKey *pNextTo; /* Next foreign key that points to zTo */
+ int nCol; /* Number of columns in this key */
+ struct sColMap { /* Mapping of columns in pFrom to columns in zTo */
+ int iFrom; /* Index of column in pFrom */
+ char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */
+ } *aCol; /* One entry for each of nCol column s */
+ u8 isDeferred; /* True if constraint checking is deferred till COMMIT */
+ u8 updateConf; /* How to resolve conflicts that occur on UPDATE */
+ u8 deleteConf; /* How to resolve conflicts that occur on DELETE */
+ u8 insertConf; /* How to resolve conflicts that occur on INSERT */
+};
+
+/*
+** SQLite supports many different ways to resolve a constraint
+** error. ROLLBACK processing means that a constraint violation
+** causes the operation in process to fail and for the current transaction
+** to be rolled back. ABORT processing means the operation in process
+** fails and any prior changes from that one operation are backed out,
+** but the transaction is not rolled back. FAIL processing means that
+** the operation in progress stops and returns an error code. But prior
+** changes due to the same operation are not backed out and no rollback
+** occurs. IGNORE means that the particular row that caused the constraint
+** error is not inserted or updated. Processing continues and no error
+** is returned. REPLACE means that preexisting database rows that caused
+** a UNIQUE constraint violation are removed so that the new insert or
+** update can proceed. Processing continues and no error is reported.
+**
+** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys.
+** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the
+** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign
+** key is set to NULL. CASCADE means that a DELETE or UPDATE of the
+** referenced table row is propagated into the row that holds the
+** foreign key.
+**
+** The following symbolic values are used to record which type
+** of action to take.
+*/
+#define OE_None 0 /* There is no constraint to check */
+#define OE_Rollback 1 /* Fail the operation and rollback the transaction */
+#define OE_Abort 2 /* Back out changes but do no rollback transaction */
+#define OE_Fail 3 /* Stop the operation but leave all prior changes */
+#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */
+#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */
+
+#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */
+#define OE_SetNull 7 /* Set the foreign key value to NULL */
+#define OE_SetDflt 8 /* Set the foreign key value to its default */
+#define OE_Cascade 9 /* Cascade the changes */
+
+#define OE_Default 99 /* Do whatever the default action is */
+
+
+/*
+** An instance of the following structure is passed as the first
+** argument to sqlite3VdbeKeyCompare and is used to control the
+** comparison of the two index keys.
+**
+** If the KeyInfo.incrKey value is true and the comparison would
+** otherwise be equal, then return a result as if the second key
+** were larger.
+*/
+struct KeyInfo {
+ sqlite3 *db; /* The database connection */
+ u8 enc; /* Text encoding - one of the TEXT_Utf* values */
+ u8 incrKey; /* Increase 2nd key by epsilon before comparison */
+ u8 prefixIsEqual; /* Treat a prefix as equal */
+ int nField; /* Number of entries in aColl[] */
+ u8 *aSortOrder; /* If defined an aSortOrder[i] is true, sort DESC */
+ CollSeq *aColl[1]; /* Collating sequence for each term of the key */
+};
+
+/*
+** Each SQL index is represented in memory by an
+** instance of the following structure.
+**
+** The columns of the table that are to be indexed are described
+** by the aiColumn[] field of this structure. For example, suppose
+** we have the following table and index:
+**
+** CREATE TABLE Ex1(c1 int, c2 int, c3 text);
+** CREATE INDEX Ex2 ON Ex1(c3,c1);
+**
+** In the Table structure describing Ex1, nCol==3 because there are
+** three columns in the table. In the Index structure describing
+** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed.
+** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the
+** first column to be indexed (c3) has an index of 2 in Ex1.aCol[].
+** The second column to be indexed (c1) has an index of 0 in
+** Ex1.aCol[], hence Ex2.aiColumn[1]==0.
+**
+** The Index.onError field determines whether or not the indexed columns
+** must be unique and what to do if they are not. When Index.onError=OE_None,
+** it means this is not a unique index. Otherwise it is a unique index
+** and the value of Index.onError indicate the which conflict resolution
+** algorithm to employ whenever an attempt is made to insert a non-unique
+** element.
+*/
+struct Index {
+ char *zName; /* Name of this index */
+ int nColumn; /* Number of columns in the table used by this index */
+ int *aiColumn; /* Which columns are used by this index. 1st is 0 */
+ unsigned *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
+ Table *pTable; /* The SQL table being indexed */
+ int tnum; /* Page containing root of this index in database file */
+ u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
+ u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
+ char *zColAff; /* String defining the affinity of each column */
+ Index *pNext; /* The next index associated with the same table */
+ Schema *pSchema; /* Schema containing this index */
+ u8 *aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */
+ char **azColl; /* Array of collation sequence names for index */
+};
+
+/*
+** Each token coming out of the lexer is an instance of
+** this structure. Tokens are also used as part of an expression.
+**
+** Note if Token.z==0 then Token.dyn and Token.n are undefined and
+** may contain random values. Do not make any assuptions about Token.dyn
+** and Token.n when Token.z==0.
+*/
+struct Token {
+ const unsigned char *z; /* Text of the token. Not NULL-terminated! */
+ unsigned dyn;// : 1; /* True for malloced memory, false for static */
+ unsigned n;// : 31; /* Number of characters in this token */
+};
+
+/*
+** An instance of this structure contains information needed to generate
+** code for a SELECT that contains aggregate functions.
+**
+** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a
+** pointer to this structure. The Expr.iColumn field is the index in
+** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate
+** code for that node.
+**
+** AggInfo.pGroupBy and AggInfo.aFunc.pExpr point to fields within the
+** original Select structure that describes the SELECT statement. These
+** fields do not need to be freed when deallocating the AggInfo structure.
+*/
+struct AggInfo {
+ u8 directMode; /* Direct rendering mode means take data directly
+ ** from source tables rather than from accumulators */
+ u8 useSortingIdx; /* In direct mode, reference the sorting index rather
+ ** than the source table */
+ int sortingIdx; /* Cursor number of the sorting index */
+ ExprList *pGroupBy; /* The group by clause */
+ int nSortingColumn; /* Number of columns in the sorting index */
+ struct AggInfo_col { /* For each column used in source tables */
+ Table *pTab; /* Source table */
+ int iTable; /* Cursor number of the source table */
+ int iColumn; /* Column number within the source table */
+ int iSorterColumn; /* Column number in the sorting index */
+ int iMem; /* Memory location that acts as accumulator */
+ Expr *pExpr; /* The original expression */
+ } *aCol;
+ int nColumn; /* Number of used entries in aCol[] */
+ int nColumnAlloc; /* Number of slots allocated for aCol[] */
+ int nAccumulator; /* Number of columns that show through to the output.
+ ** Additional columns are used only as parameters to
+ ** aggregate functions */
+ struct AggInfo_func { /* For each aggregate function */
+ Expr *pExpr; /* Expression encoding the function */
+ FuncDef *pFunc; /* The aggregate function implementation */
+ int iMem; /* Memory location that acts as accumulator */
+ int iDistinct; /* Ephermeral table used to enforce DISTINCT */
+ } *aFunc;
+ int nFunc; /* Number of entries in aFunc[] */
+ int nFuncAlloc; /* Number of slots allocated for aFunc[] */
+};
+
+/*
+** Each node of an expression in the parse tree is an instance
+** of this structure.
+**
+** Expr.op is the opcode. The integer parser token codes are reused
+** as opcodes here. For example, the parser defines TK_GE to be an integer
+** code representing the ">=" operator. This same integer code is reused
+** to represent the greater-than-or-equal-to operator in the expression
+** tree.
+**
+** Expr.pRight and Expr.pLeft are subexpressions. Expr.pList is a list
+** of argument if the expression is a function.
+**
+** Expr.token is the operator token for this node. For some expressions
+** that have subexpressions, Expr.token can be the complete text that gave
+** rise to the Expr. In the latter case, the token is marked as being
+** a compound token.
+**
+** An expression of the form ID or ID.ID refers to a column in a table.
+** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is
+** the integer cursor number of a VDBE cursor pointing to that table and
+** Expr.iColumn is the column number for the specific column. If the
+** expression is used as a result in an aggregate SELECT, then the
+** value is also stored in the Expr.iAgg column in the aggregate so that
+** it can be accessed after all aggregates are computed.
+**
+** If the expression is a function, the Expr.iTable is an integer code
+** representing which function. If the expression is an unbound variable
+** marker (a question mark character '?' in the original SQL) then the
+** Expr.iTable holds the index number for that variable.
+**
+** If the expression is a subquery then Expr.iColumn holds an integer
+** register number containing the result of the subquery. If the
+** subquery gives a constant result, then iTable is -1. If the subquery
+** gives a different answer at different times during statement processing
+** then iTable is the address of a subroutine that computes the subquery.
+**
+** The Expr.pSelect field points to a SELECT statement. The SELECT might
+** be the right operand of an IN operator. Or, if a scalar SELECT appears
+** in an expression the opcode is TK_SELECT and Expr.pSelect is the only
+** operand.
+**
+** If the Expr is of type OP_Column, and the table it is selecting from
+** is a disk table or the "old.*" pseudo-table, then pTab points to the
+** corresponding table definition.
+*/
+struct Expr {
+ u8 op; /* Operation performed by this node */
+ char affinity; /* The affinity of the column or 0 if not a column */
+ u16 flags; /* Various flags. See below */
+ CollSeq *pColl; /* The collation type of the column or 0 */
+ Expr *pLeft, *pRight; /* Left and right subnodes */
+ ExprList *pList; /* A list of expressions used as function arguments
+ ** or in "<expr> IN (<expr-list)" */
+ Token token; /* An operand token */
+ Token span; /* Complete text of the expression */
+ int iTable, iColumn; /* When op==TK_COLUMN, then this expr node means the
+ ** iColumn-th field of the iTable-th table. */
+ AggInfo *pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
+ int iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
+ int iRightJoinTable; /* If EP_FromJoin, the right table of the join */
+ Select *pSelect; /* When the expression is a sub-select. Also the
+ ** right side of "<expr> IN (<select>)" */
+ Table *pTab; /* Table for OP_Column expressions. */
+/* Schema *pSchema; */
+#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
+ int nHeight; /* Height of the tree headed by this node */
+#endif
+};
+
+/*
+** The following are the meanings of bits in the Expr.flags field.
+*/
+#define EP_FromJoin 0x01 /* Originated in ON or USING clause of a join */
+#define EP_Agg 0x02 /* Contains one or more aggregate functions */
+#define EP_Resolved 0x04 /* IDs have been resolved to COLUMNs */
+#define EP_Error 0x08 /* Expression contains one or more errors */
+#define EP_Distinct 0x10 /* Aggregate function with DISTINCT keyword */
+#define EP_VarSelect 0x20 /* pSelect is correlated, not constant */
+#define EP_Dequoted 0x40 /* True if the string has been dequoted */
+#define EP_InfixFunc 0x80 /* True for an infix function: LIKE, GLOB, etc */
+#define EP_ExpCollate 0x100 /* Collating sequence specified explicitly */
+
+/*
+** These macros can be used to test, set, or clear bits in the
+** Expr.flags field.
+*/
+#define ExprHasProperty(E,P) (((E)->flags&(P))==(P))
+#define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0)
+#define ExprSetProperty(E,P) (E)->flags|=(P)
+#define ExprClearProperty(E,P) (E)->flags&=~(P)
+
+/*
+** A list of expressions. Each expression may optionally have a
+** name. An expr/name combination can be used in several ways, such
+** as the list of "expr AS ID" fields following a "SELECT" or in the
+** list of "ID = expr" items in an UPDATE. A list of expressions can
+** also be used as the argument to a function, in which case the a.zName
+** field is not used.
+*/
+struct ExprList {
+ int nExpr; /* Number of expressions on the list */
+ int nAlloc; /* Number of entries allocated below */
+ int iECursor; /* VDBE Cursor associated with this ExprList */
+ struct ExprList_item {
+ Expr *pExpr; /* The list of expressions */
+ char *zName; /* Token associated with this expression */
+ u8 sortOrder; /* 1 for DESC or 0 for ASC */
+ u8 isAgg; /* True if this is an aggregate like count(*) */
+ u8 done; /* A flag to indicate when processing is finished */
+ } *a; /* One entry for each expression */
+};
+
+/*
+** An instance of this structure can hold a simple list of identifiers,
+** such as the list "a,b,c" in the following statements:
+**
+** INSERT INTO t(a,b,c) VALUES ...;
+** CREATE INDEX idx ON t(a,b,c);
+** CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...;
+**
+** The IdList.a.idx field is used when the IdList represents the list of
+** column names after a table name in an INSERT statement. In the statement
+**
+** INSERT INTO t(a,b,c) ...
+**
+** If "a" is the k-th column of table "t", then IdList.a[0].idx==k.
+*/
+struct IdList {
+ struct IdList_item {
+ char *zName; /* Name of the identifier */
+ int idx; /* Index in some Table.aCol[] of a column named zName */
+ } *a;
+ int nId; /* Number of identifiers on the list */
+ int nAlloc; /* Number of entries allocated for a[] below */
+};
+
+/*
+** The bitmask datatype defined below is used for various optimizations.
+**
+** Changing this from a 64-bit to a 32-bit type limits the number of
+** tables in a join to 32 instead of 64. But it also reduces the size
+** of the library by 738 bytes on ix86.
+*/
+typedef u64 Bitmask;
+
+/*
+** The following structure describes the FROM clause of a SELECT statement.
+** Each table or subquery in the FROM clause is a separate element of
+** the SrcList.a[] array.
+**
+** With the addition of multiple database support, the following structure
+** can also be used to describe a particular table such as the table that
+** is modified by an INSERT, DELETE, or UPDATE statement. In standard SQL,
+** such a table must be a simple name: ID. But in SQLite, the table can
+** now be identified by a database name, a dot, then the table name: ID.ID.
+**
+** The jointype starts out showing the join type between the current table
+** and the next table on the list. The parser builds the list this way.
+** But sqlite3SrcListShiftJoinType() later shifts the jointypes so that each
+** jointype expresses the join between the table and the previous table.
+*/
+struct SrcList {
+ i16 nSrc; /* Number of tables or subqueries in the FROM clause */
+ i16 nAlloc; /* Number of entries allocated in a[] below */
+ struct SrcList_item {
+ char *zDatabase; /* Name of database holding this table */
+ char *zName; /* Name of the table */
+ char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
+ Table *pTab; /* An SQL table corresponding to zName */
+ Select *pSelect; /* A SELECT statement used in place of a table name */
+ u8 isPopulated; /* Temporary table associated with SELECT is populated */
+ u8 jointype; /* Type of join between this able and the previous */
+ int iCursor; /* The VDBE cursor number used to access this table */
+ Expr *pOn; /* The ON clause of a join */
+ IdList *pUsing; /* The USING clause of a join */
+ Bitmask colUsed; /* Bit N (1<<N) set if column N or pTab is used */
+ } a[1]; /* One entry for each identifier on the list */
+};
+
+/*
+** Permitted values of the SrcList.a.jointype field
+*/
+#define JT_INNER 0x0001 /* Any kind of inner or cross join */
+#define JT_CROSS 0x0002 /* Explicit use of the CROSS keyword */
+#define JT_NATURAL 0x0004 /* True for a "natural" join */
+#define JT_LEFT 0x0008 /* Left outer join */
+#define JT_RIGHT 0x0010 /* Right outer join */
+#define JT_OUTER 0x0020 /* The "OUTER" keyword is present */
+#define JT_ERROR 0x0040 /* unknown or unsupported join type */
+
+/*
+** For each nested loop in a WHERE clause implementation, the WhereInfo
+** structure contains a single instance of this structure. This structure
+** is intended to be private the the where.c module and should not be
+** access or modified by other modules.
+**
+** The pIdxInfo and pBestIdx fields are used to help pick the best
+** index on a virtual table. The pIdxInfo pointer contains indexing
+** information for the i-th table in the FROM clause before reordering.
+** All the pIdxInfo pointers are freed by whereInfoFree() in where.c.
+** The pBestIdx pointer is a copy of pIdxInfo for the i-th table after
+** FROM clause ordering. This is a little confusing so I will repeat
+** it in different words. WhereInfo.a[i].pIdxInfo is index information
+** for WhereInfo.pTabList.a[i]. WhereInfo.a[i].pBestInfo is the
+** index information for the i-th loop of the join. pBestInfo is always
+** either NULL or a copy of some pIdxInfo. So for cleanup it is
+** sufficient to free all of the pIdxInfo pointers.
+**
+*/
+struct WhereLevel {
+ int iFrom; /* Which entry in the FROM clause */
+ int flags; /* Flags associated with this level */
+ int iMem; /* First memory cell used by this level */
+ int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */
+ Index *pIdx; /* Index used. NULL if no index */
+ int iTabCur; /* The VDBE cursor used to access the table */
+ int iIdxCur; /* The VDBE cursor used to acesss pIdx */
+ int brk; /* Jump here to break out of the loop */
+ int nxt; /* Jump here to start the next IN combination */
+ int cont; /* Jump here to continue with the next loop cycle */
+ int top; /* First instruction of interior of the loop */
+ int op, p1, p2; /* Opcode used to terminate the loop */
+ int nEq; /* Number of == or IN constraints on this loop */
+ int nIn; /* Number of IN operators constraining this loop */
+ struct InLoop {
+ int iCur; /* The VDBE cursor used by this IN operator */
+ int topAddr; /* Top of the IN loop */
+ } *aInLoop; /* Information about each nested IN operator */
+ sqlite3_index_info *pBestIdx; /* Index information for this level */
+
+ /* The following field is really not part of the current level. But
+ ** we need a place to cache index information for each table in the
+ ** FROM clause and the WhereLevel structure is a convenient place.
+ */
+ sqlite3_index_info *pIdxInfo; /* Index info for n-th source table */
+};
+
+/*
+** The WHERE clause processing routine has two halves. The
+** first part does the start of the WHERE loop and the second
+** half does the tail of the WHERE loop. An instance of
+** this structure is returned by the first half and passed
+** into the second half to give some continuity.
+*/
+struct WhereInfo {
+ Parse *pParse;
+ SrcList *pTabList; /* List of tables in the join */
+ int iTop; /* The very beginning of the WHERE loop */
+ int iContinue; /* Jump here to continue with next record */
+ int iBreak; /* Jump here to break out of the loop */
+ int nLevel; /* Number of nested loop */
+ sqlite3_index_info **apInfo; /* Array of pointers to index info structures */
+ WhereLevel a[1]; /* Information about each nest loop in the WHERE */
+};
+
+/*
+** A NameContext defines a context in which to resolve table and column
+** names. The context consists of a list of tables (the pSrcList) field and
+** a list of named expression (pEList). The named expression list may
+** be NULL. The pSrc corresponds to the FROM clause of a SELECT or
+** to the table being operated on by INSERT, UPDATE, or DELETE. The
+** pEList corresponds to the result set of a SELECT and is NULL for
+** other statements.
+**
+** NameContexts can be nested. When resolving names, the inner-most
+** context is searched first. If no match is found, the next outer
+** context is checked. If there is still no match, the next context
+** is checked. This process continues until either a match is found
+** or all contexts are check. When a match is found, the nRef member of
+** the context containing the match is incremented.
+**
+** Each subquery gets a new NameContext. The pNext field points to the
+** NameContext in the parent query. Thus the process of scanning the
+** NameContext list corresponds to searching through successively outer
+** subqueries looking for a match.
+*/
+struct NameContext {
+ Parse *pParse; /* The parser */
+ SrcList *pSrcList; /* One or more tables used to resolve names */
+ ExprList *pEList; /* Optional list of named expressions */
+ int nRef; /* Number of names resolved by this context */
+ int nErr; /* Number of errors encountered while resolving names */
+ u8 allowAgg; /* Aggregate functions allowed here */
+ u8 hasAgg; /* True if aggregates are seen */
+ u8 isCheck; /* True if resolving names in a CHECK constraint */
+ int nDepth; /* Depth of subquery recursion. 1 for no recursion */
+ AggInfo *pAggInfo; /* Information about aggregates at this level */
+ NameContext *pNext; /* Next outer name context. NULL for outermost */
+};
+
+/*
+** An instance of the following structure contains all information
+** needed to generate code for a single SELECT statement.
+**
+** nLimit is set to -1 if there is no LIMIT clause. nOffset is set to 0.
+** If there is a LIMIT clause, the parser sets nLimit to the value of the
+** limit and nOffset to the value of the offset (or 0 if there is not
+** offset). But later on, nLimit and nOffset become the memory locations
+** in the VDBE that record the limit and offset counters.
+**
+** addrOpenEphm[] entries contain the address of OP_OpenEphemeral opcodes.
+** These addresses must be stored so that we can go back and fill in
+** the P3_KEYINFO and P2 parameters later. Neither the KeyInfo nor
+** the number of columns in P2 can be computed at the same time
+** as the OP_OpenEphm instruction is coded because not
+** enough information about the compound query is known at that point.
+** The KeyInfo for addrOpenTran[0] and [1] contains collating sequences
+** for the result set. The KeyInfo for addrOpenTran[2] contains collating
+** sequences for the ORDER BY clause.
+*/
+struct Select {
+ ExprList *pEList; /* The fields of the result */
+ u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
+ u8 isDistinct; /* True if the DISTINCT keyword is present */
+ u8 isResolved; /* True once sqlite3SelectResolve() has run. */
+ u8 isAgg; /* True if this is an aggregate query */
+ u8 usesEphm; /* True if uses an OpenEphemeral opcode */
+ u8 disallowOrderBy; /* Do not allow an ORDER BY to be attached if TRUE */
+ char affinity; /* MakeRecord with this affinity for SRT_Set */
+ SrcList *pSrc; /* The FROM clause */
+ Expr *pWhere; /* The WHERE clause */
+ ExprList *pGroupBy; /* The GROUP BY clause */
+ Expr *pHaving; /* The HAVING clause */
+ ExprList *pOrderBy; /* The ORDER BY clause */
+ Select *pPrior; /* Prior select in a compound select statement */
+ Select *pNext; /* Next select to the left in a compound */
+ Select *pRightmost; /* Right-most select in a compound select statement */
+ Expr *pLimit; /* LIMIT expression. NULL means not used. */
+ Expr *pOffset; /* OFFSET expression. NULL means not used. */
+ int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */
+ int addrOpenEphm[3]; /* OP_OpenEphem opcodes related to this select */
+};
+
+/*
+** The results of a select can be distributed in several ways.
+*/
+#define SRT_Union 1 /* Store result as keys in an index */
+#define SRT_Except 2 /* Remove result from a UNION index */
+#define SRT_Discard 3 /* Do not save the results anywhere */
+
+/* The ORDER BY clause is ignored for all of the above */
+#define IgnorableOrderby(X) (X<=SRT_Discard)
+
+#define SRT_Callback 4 /* Invoke a callback with each row of result */
+#define SRT_Mem 5 /* Store result in a memory cell */
+#define SRT_Set 6 /* Store non-null results as keys in an index */
+#define SRT_Table 7 /* Store result as data with an automatic rowid */
+#define SRT_EphemTab 8 /* Create transient tab and store like SRT_Table */
+#define SRT_Subroutine 9 /* Call a subroutine to handle results */
+#define SRT_Exists 10 /* Store 1 if the result is not empty */
+
+/*
+** An SQL parser context. A copy of this structure is passed through
+** the parser and down into all the parser action routine in order to
+** carry around information that is global to the entire parse.
+**
+** The structure is divided into two parts. When the parser and code
+** generate call themselves recursively, the first part of the structure
+** is constant but the second part is reset at the beginning and end of
+** each recursion.
+**
+** The nTableLock and aTableLock variables are only used if the shared-cache
+** feature is enabled (if sqlite3Tsd()->useSharedData is true). They are
+** used to store the set of table-locks required by the statement being
+** compiled. Function sqlite3TableLock() is used to add entries to the
+** list.
+*/
+struct Parse {
+ sqlite3 *db; /* The main database structure */
+ int rc; /* Return code from execution */
+ char *zErrMsg; /* An error message */
+ Vdbe *pVdbe; /* An engine for executing database bytecode */
+ u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
+ u8 nameClash; /* A permanent table name clashes with temp table name */
+ u8 checkSchema; /* Causes schema cookie check after an error */
+ u8 nested; /* Number of nested calls to the parser/code generator */
+ u8 parseError; /* True after a parsing error. Ticket #1794 */
+ int nErr; /* Number of errors seen */
+ int nTab; /* Number of previously allocated VDBE cursors */
+ int nMem; /* Number of memory cells used so far */
+ int nSet; /* Number of sets used so far */
+ int ckOffset; /* Stack offset to data used by CHECK constraints */
+ u32 writeMask; /* Start a write transaction on these databases */
+ u32 cookieMask; /* Bitmask of schema verified databases */
+ int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
+ int cookieValue[SQLITE_MAX_ATTACHED+2]; /* Values of cookies to verify */
+#ifndef SQLITE_OMIT_SHARED_CACHE
+ int nTableLock; /* Number of locks in aTableLock */
+ TableLock *aTableLock; /* Required table locks for shared-cache mode */
+#endif
+
+ /* Above is constant between recursions. Below is reset before and after
+ ** each recursion */
+
+ int nVar; /* Number of '?' variables seen in the SQL so far */
+ int nVarExpr; /* Number of used slots in apVarExpr[] */
+ int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
+ Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
+ u8 explain; /* True if the EXPLAIN flag is found on the query */
+ Token sErrToken; /* The token at which the error occurred */
+ Token sNameToken; /* Token with unqualified schema object name */
+ Token sLastToken; /* The last token parsed */
+ const char *zSql; /* All SQL text */
+ const char *zTail; /* All SQL text past the last semicolon parsed */
+ Table *pNewTable; /* A table being constructed by CREATE TABLE */
+ Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
+ TriggerStack *trigStack; /* Trigger actions being coded */
+ const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ Token sArg; /* Complete text of a module argument */
+ u8 declareVtab; /* True if inside sqlite3_declare_vtab() */
+ Table *pVirtualLock; /* Require virtual table lock on this table */
+#endif
+#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
+ int nHeight; /* Expression tree height of current sub-select */
+#endif
+};
+
+#ifdef SQLITE_OMIT_VIRTUALTABLE
+ #define IN_DECLARE_VTAB 0
+#else
+ #define IN_DECLARE_VTAB (pParse->declareVtab)
+#endif
+
+/*
+** An instance of the following structure can be declared on a stack and used
+** to save the Parse.zAuthContext value so that it can be restored later.
+*/
+struct AuthContext {
+ const char *zAuthContext; /* Put saved Parse.zAuthContext here */
+ Parse *pParse; /* The Parse structure */
+};
+
+/*
+** Bitfield flags for P2 value in OP_Insert and OP_Delete
+*/
+#define OPFLAG_NCHANGE 1 /* Set to update db->nChange */
+#define OPFLAG_LASTROWID 2 /* Set to update db->lastRowid */
+#define OPFLAG_ISUPDATE 4 /* This OP_Insert is an sql UPDATE */
+#define OPFLAG_APPEND 8 /* This is likely to be an append */
+
+/*
+ * Each trigger present in the database schema is stored as an instance of
+ * struct Trigger.
+ *
+ * Pointers to instances of struct Trigger are stored in two ways.
+ * 1. In the "trigHash" hash table (part of the sqlite3* that represents the
+ * database). This allows Trigger structures to be retrieved by name.
+ * 2. All triggers associated with a single table form a linked list, using the
+ * pNext member of struct Trigger. A pointer to the first element of the
+ * linked list is stored as the "pTrigger" member of the associated
+ * struct Table.
+ *
+ * The "step_list" member points to the first element of a linked list
+ * containing the SQL statements specified as the trigger program.
+ */
+struct Trigger {
+ char *name; /* The name of the trigger */
+ char *table; /* The table or view to which the trigger applies */
+ u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
+ u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
+ Expr *pWhen; /* The WHEN clause of the expresion (may be NULL) */
+ IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger,
+ the <column-list> is stored here */
+ Token nameToken; /* Token containing zName. Use during parsing only */
+ Schema *pSchema; /* Schema containing the trigger */
+ Schema *pTabSchema; /* Schema containing the table */
+ TriggerStep *step_list; /* Link list of trigger program steps */
+ Trigger *pNext; /* Next trigger associated with the table */
+};
+
+/*
+** A trigger is either a BEFORE or an AFTER trigger. The following constants
+** determine which.
+**
+** If there are multiple triggers, you might of some BEFORE and some AFTER.
+** In that cases, the constants below can be ORed together.
+*/
+#define TRIGGER_BEFORE 1
+#define TRIGGER_AFTER 2
+
+/*
+ * An instance of struct TriggerStep is used to store a single SQL statement
+ * that is a part of a trigger-program.
+ *
+ * Instances of struct TriggerStep are stored in a singly linked list (linked
+ * using the "pNext" member) referenced by the "step_list" member of the
+ * associated struct Trigger instance. The first element of the linked list is
+ * the first step of the trigger-program.
+ *
+ * The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or
+ * "SELECT" statement. The meanings of the other members is determined by the
+ * value of "op" as follows:
+ *
+ * (op == TK_INSERT)
+ * orconf -> stores the ON CONFLICT algorithm
+ * pSelect -> If this is an INSERT INTO ... SELECT ... statement, then
+ * this stores a pointer to the SELECT statement. Otherwise NULL.
+ * target -> A token holding the name of the table to insert into.
+ * pExprList -> If this is an INSERT INTO ... VALUES ... statement, then
+ * this stores values to be inserted. Otherwise NULL.
+ * pIdList -> If this is an INSERT INTO ... (<column-names>) VALUES ...
+ * statement, then this stores the column-names to be
+ * inserted into.
+ *
+ * (op == TK_DELETE)
+ * target -> A token holding the name of the table to delete from.
+ * pWhere -> The WHERE clause of the DELETE statement if one is specified.
+ * Otherwise NULL.
+ *
+ * (op == TK_UPDATE)
+ * target -> A token holding the name of the table to update rows of.
+ * pWhere -> The WHERE clause of the UPDATE statement if one is specified.
+ * Otherwise NULL.
+ * pExprList -> A list of the columns to update and the expressions to update
+ * them to. See sqlite3Update() documentation of "pChanges"
+ * argument.
+ *
+ */
+struct TriggerStep {
+ int op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */
+ int orconf; /* OE_Rollback etc. */
+ Trigger *pTrig; /* The trigger that this step is a part of */
+
+ Select *pSelect; /* Valid for SELECT and sometimes
+ INSERT steps (when pExprList == 0) */
+ Token target; /* Valid for DELETE, UPDATE, INSERT steps */
+ Expr *pWhere; /* Valid for DELETE, UPDATE steps */
+ ExprList *pExprList; /* Valid for UPDATE statements and sometimes
+ INSERT steps (when pSelect == 0) */
+ IdList *pIdList; /* Valid for INSERT statements only */
+ TriggerStep *pNext; /* Next in the link-list */
+ TriggerStep *pLast; /* Last element in link-list. Valid for 1st elem only */
+};
+
+/*
+ * An instance of struct TriggerStack stores information required during code
+ * generation of a single trigger program. While the trigger program is being
+ * coded, its associated TriggerStack instance is pointed to by the
+ * "pTriggerStack" member of the Parse structure.
+ *
+ * The pTab member points to the table that triggers are being coded on. The
+ * newIdx member contains the index of the vdbe cursor that points at the temp
+ * table that stores the new.* references. If new.* references are not valid
+ * for the trigger being coded (for example an ON DELETE trigger), then newIdx
+ * is set to -1. The oldIdx member is analogous to newIdx, for old.* references.
+ *
+ * The ON CONFLICT policy to be used for the trigger program steps is stored
+ * as the orconf member. If this is OE_Default, then the ON CONFLICT clause
+ * specified for individual triggers steps is used.
+ *
+ * struct TriggerStack has a "pNext" member, to allow linked lists to be
+ * constructed. When coding nested triggers (triggers fired by other triggers)
+ * each nested trigger stores its parent trigger's TriggerStack as the "pNext"
+ * pointer. Once the nested trigger has been coded, the pNext value is restored
+ * to the pTriggerStack member of the Parse stucture and coding of the parent
+ * trigger continues.
+ *
+ * Before a nested trigger is coded, the linked list pointed to by the
+ * pTriggerStack is scanned to ensure that the trigger is not about to be coded
+ * recursively. If this condition is detected, the nested trigger is not coded.
+ */
+struct TriggerStack {
+ Table *pTab; /* Table that triggers are currently being coded on */
+ int newIdx; /* Index of vdbe cursor to "new" temp table */
+ int oldIdx; /* Index of vdbe cursor to "old" temp table */
+ int orconf; /* Current orconf policy */
+ int ignoreJump; /* where to jump to for a RAISE(IGNORE) */
+ Trigger *pTrigger; /* The trigger currently being coded */
+ TriggerStack *pNext; /* Next trigger down on the trigger stack */
+};
+
+/*
+** The following structure contains information used by the sqliteFix...
+** routines as they walk the parse tree to make database references
+** explicit.
+*/
+typedef struct DbFixer DbFixer;
+struct DbFixer {
+ Parse *pParse; /* The parsing context. Error messages written here */
+ const char *zDb; /* Make sure all objects are contained in this database */
+ const char *zType; /* Type of the container - used for error messages */
+ const Token *pName; /* Name of the container - used for error messages */
+};
+
+/*
+** An objected used to accumulate the text of a string where we
+** do not necessarily know how big the string will be in the end.
+*/
+struct StrAccum {
+ char *zBase; /* A base allocation. Not from malloc. */
+ char *zText; /* The string collected so far */
+ int nChar; /* Length of the string so far */
+ int nAlloc; /* Amount of space allocated in zText */
+ u8 mallocFailed; /* Becomes true if any memory allocation fails */
+ u8 useMalloc; /* True if zText is enlargable using realloc */
+ u8 tooBig; /* Becomes true if string size exceeds limits */
+};
+
+/*
+** A pointer to this structure is used to communicate information
+** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
+*/
+typedef struct {
+ sqlite3 *db; /* The database being initialized */
+ int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */
+ char **pzErrMsg; /* Error message stored here */
+ int rc; /* Result code stored here */
+} InitData;
+
+/*
+** Assuming zIn points to the first byte of a UTF-8 character,
+** advance zIn to point to the first byte of the next UTF-8 character.
+*/
+#define SQLITE_SKIP_UTF8(zIn) { \
+ if( (*(zIn++))>=0xc0 ){ \
+ while( (*zIn & 0xc0)==0x80 ){ zIn++; } \
+ } \
+}
+
+/*
+** The SQLITE_CORRUPT_BKPT macro can be either a constant (for production
+** builds) or a function call (for debugging). If it is a function call,
+** it allows the operator to set a breakpoint at the spot where database
+** corruption is first detected.
+*/
+#ifdef SQLITE_DEBUG
+ int sqlite3Corrupt(void);
+# define SQLITE_CORRUPT_BKPT sqlite3Corrupt()
+# define DEBUGONLY(X) X
+#else
+# define SQLITE_CORRUPT_BKPT SQLITE_CORRUPT
+# define DEBUGONLY(X)
+#endif
+
+/*
+** Internal function prototypes
+*/
+int sqlite3StrICmp(const char *, const char *);
+int sqlite3StrNICmp(const char *, const char *, int);
+int sqlite3IsNumber(const char*, int*, u8);
+
+void *sqlite3MallocZero(unsigned);
+void *sqlite3DbMallocZero(sqlite3*, unsigned);
+void *sqlite3DbMallocRaw(sqlite3*, unsigned);
+char *sqlite3StrDup(const char*);
+char *sqlite3StrNDup(const char*, int);
+char *sqlite3DbStrDup(sqlite3*,const char*);
+char *sqlite3DbStrNDup(sqlite3*,const char*, int);
+void *sqlite3DbReallocOrFree(sqlite3 *, void *, int);
+void *sqlite3DbRealloc(sqlite3 *, void *, int);
+
+char *sqlite3MPrintf(sqlite3*,const char*, ...);
+char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
+#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
+ void sqlite3DebugPrintf(const char*, ...);
+#endif
+#if defined(SQLITE_TEST)
+ void *sqlite3TextToPtr(const char*);
+#endif
+void sqlite3SetString(char **, ...);
+void sqlite3ErrorMsg(Parse*, const char*, ...);
+void sqlite3ErrorClear(Parse*);
+void sqlite3Dequote(char*);
+void sqlite3DequoteExpr(sqlite3*, Expr*);
+int sqlite3KeywordCode(const unsigned char*, int);
+int sqlite3RunParser(Parse*, const char*, char **);
+void sqlite3FinishCoding(Parse*);
+Expr *sqlite3Expr(sqlite3*, int, Expr*, Expr*, const Token*);
+Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*, const Token*);
+Expr *sqlite3RegisterExpr(Parse*,Token*);
+Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*);
+void sqlite3ExprSpan(Expr*,Token*,Token*);
+Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*);
+void sqlite3ExprAssignVarNumber(Parse*, Expr*);
+void sqlite3ExprDelete(Expr*);
+ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*,Token*);
+void sqlite3ExprListDelete(ExprList*);
+int sqlite3Init(sqlite3*, char**);
+int sqlite3InitCallback(void*, int, char**, char**);
+void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
+void sqlite3ResetInternalSchema(sqlite3*, int);
+void sqlite3BeginParse(Parse*,int);
+void sqlite3CommitInternalChanges(sqlite3*);
+Table *sqlite3ResultSetOfSelect(Parse*,char*,Select*);
+void sqlite3OpenMasterTable(Parse *, int);
+void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);
+void sqlite3AddColumn(Parse*,Token*);
+void sqlite3AddNotNull(Parse*, int);
+void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
+void sqlite3AddCheckConstraint(Parse*, Expr*);
+void sqlite3AddColumnType(Parse*,Token*);
+void sqlite3AddDefaultValue(Parse*,Expr*);
+void sqlite3AddCollateType(Parse*, Token*);
+void sqlite3EndTable(Parse*,Token*,Token*,Select*);
+
+void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int,int);
+
+#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE)
+ int sqlite3ViewGetColumnNames(Parse*,Table*);
+#else
+# define sqlite3ViewGetColumnNames(A,B) 0
+#endif
+
+void sqlite3DropTable(Parse*, SrcList*, int, int);
+void sqlite3DeleteTable(Table*);
+void sqlite3Insert(Parse*, SrcList*, ExprList*, Select*, IdList*, int);
+void *sqlite3ArrayAllocate(sqlite3*,void*,int,int,int*,int*,int*);
+IdList *sqlite3IdListAppend(sqlite3*, IdList*, Token*);
+int sqlite3IdListIndex(IdList*,const char*);
+SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*);
+SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, Token*,
+ Select*, Expr*, IdList*);
+void sqlite3SrcListShiftJoinType(SrcList*);
+void sqlite3SrcListAssignCursors(Parse*, SrcList*);
+void sqlite3IdListDelete(IdList*);
+void sqlite3SrcListDelete(SrcList*);
+void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
+ Token*, int, int);
+void sqlite3DropIndex(Parse*, SrcList*, int);
+int sqlite3Select(Parse*, Select*, int, int, Select*, int, int*, char *aff);
+Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*,
+ Expr*,ExprList*,int,Expr*,Expr*);
+void sqlite3SelectDelete(Select*);
+Table *sqlite3SrcListLookup(Parse*, SrcList*);
+int sqlite3IsReadOnly(Parse*, Table*, int);
+void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int);
+void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
+void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
+WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**);
+void sqlite3WhereEnd(WhereInfo*);
+void sqlite3ExprCodeGetColumn(Vdbe*, Table*, int, int);
+void sqlite3ExprCode(Parse*, Expr*);
+void sqlite3ExprCodeAndCache(Parse*, Expr*);
+int sqlite3ExprCodeExprList(Parse*, ExprList*);
+void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
+void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
+Table *sqlite3FindTable(sqlite3*,const char*, const char*);
+Table *sqlite3LocateTable(Parse*,const char*, const char*);
+Index *sqlite3FindIndex(sqlite3*,const char*, const char*);
+void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*);
+void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*);
+void sqlite3Vacuum(Parse*);
+int sqlite3RunVacuum(char**, sqlite3*);
+char *sqlite3NameFromToken(sqlite3*, Token*);
+int sqlite3ExprCompare(Expr*, Expr*);
+int sqlite3ExprResolveNames(NameContext *, Expr *);
+int sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
+int sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
+Vdbe *sqlite3GetVdbe(Parse*);
+Expr *sqlite3CreateIdExpr(Parse *, const char*);
+void sqlite3Randomness(int, void*);
+void sqlite3RollbackAll(sqlite3*);
+void sqlite3CodeVerifySchema(Parse*, int);
+void sqlite3BeginTransaction(Parse*, int);
+void sqlite3CommitTransaction(Parse*);
+void sqlite3RollbackTransaction(Parse*);
+int sqlite3ExprIsConstant(Expr*);
+int sqlite3ExprIsConstantNotJoin(Expr*);
+int sqlite3ExprIsConstantOrFunction(Expr*);
+int sqlite3ExprIsInteger(Expr*, int*);
+int sqlite3IsRowid(const char*);
+void sqlite3GenerateRowDelete(sqlite3*, Vdbe*, Table*, int, int);
+void sqlite3GenerateRowIndexDelete(Vdbe*, Table*, int, char*);
+void sqlite3GenerateIndexKey(Vdbe*, Index*, int);
+void sqlite3GenerateConstraintChecks(Parse*,Table*,int,char*,int,int,int,int);
+void sqlite3CompleteInsertion(Parse*, Table*, int, char*, int, int, int, int);
+void sqlite3OpenTableAndIndices(Parse*, Table*, int, int);
+void sqlite3BeginWriteOperation(Parse*, int, int);
+Expr *sqlite3ExprDup(sqlite3*,Expr*);
+void sqlite3TokenCopy(sqlite3*,Token*, Token*);
+ExprList *sqlite3ExprListDup(sqlite3*,ExprList*);
+SrcList *sqlite3SrcListDup(sqlite3*,SrcList*);
+IdList *sqlite3IdListDup(sqlite3*,IdList*);
+Select *sqlite3SelectDup(sqlite3*,Select*);
+FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,int);
+void sqlite3RegisterBuiltinFunctions(sqlite3*);
+void sqlite3RegisterDateTimeFunctions(sqlite3*);
+int sqlite3SafetyOn(sqlite3*);
+int sqlite3SafetyOff(sqlite3*);
+int sqlite3SafetyCheck(sqlite3*);
+void sqlite3ChangeCookie(sqlite3*, Vdbe*, int);
+
+#ifndef SQLITE_OMIT_TRIGGER
+ void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
+ Expr*,int, int);
+ void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
+ void sqlite3DropTrigger(Parse*, SrcList*, int);
+ void sqlite3DropTriggerPtr(Parse*, Trigger*);
+ int sqlite3TriggersExist(Parse*, Table*, int, ExprList*);
+ int sqlite3CodeRowTrigger(Parse*, int, ExprList*, int, Table *, int, int,
+ int, int);
+ void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
+ void sqlite3DeleteTriggerStep(TriggerStep*);
+ TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*);
+ TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*,
+ ExprList*,Select*,int);
+ TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, int);
+ TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*);
+ void sqlite3DeleteTrigger(Trigger*);
+ void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
+#else
+# define sqlite3TriggersExist(A,B,C,D,E,F) 0
+# define sqlite3DeleteTrigger(A)
+# define sqlite3DropTriggerPtr(A,B)
+# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
+# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I) 0
+#endif
+
+int sqlite3JoinType(Parse*, Token*, Token*, Token*);
+void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
+void sqlite3DeferForeignKey(Parse*, int);
+#ifndef SQLITE_OMIT_AUTHORIZATION
+ void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
+ int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*);
+ void sqlite3AuthContextPush(Parse*, AuthContext*, const char*);
+ void sqlite3AuthContextPop(AuthContext*);
+#else
+# define sqlite3AuthRead(a,b,c,d)
+# define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK
+# define sqlite3AuthContextPush(a,b,c)
+# define sqlite3AuthContextPop(a) ((void)(a))
+#endif
+void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
+void sqlite3Detach(Parse*, Expr*);
+int sqlite3BtreeFactory(const sqlite3 *db, const char *zFilename,
+ int omitJournal, int nCache, int flags, Btree **ppBtree);
+int sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
+int sqlite3FixSrcList(DbFixer*, SrcList*);
+int sqlite3FixSelect(DbFixer*, Select*);
+int sqlite3FixExpr(DbFixer*, Expr*);
+int sqlite3FixExprList(DbFixer*, ExprList*);
+int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
+int sqlite3AtoF(const char *z, double*);
+char *sqlite3_snprintf(int,char*,const char*,...);
+int sqlite3GetInt32(const char *, int*);
+int sqlite3FitsIn64Bits(const char *, int);
+int sqlite3Utf16ByteLen(const void *pData, int nChar);
+int sqlite3Utf8CharLen(const char *pData, int nByte);
+int sqlite3Utf8Read(const u8*, const u8*, const u8**);
+int sqlite3PutVarint(unsigned char *, u64);
+int sqlite3GetVarint(const unsigned char *, u64 *);
+int sqlite3GetVarint32(const unsigned char *, u32 *);
+int sqlite3VarintLen(u64 v);
+void sqlite3IndexAffinityStr(Vdbe *, Index *);
+void sqlite3TableAffinityStr(Vdbe *, Table *);
+char sqlite3CompareAffinity(Expr *pExpr, char aff2);
+int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
+char sqlite3ExprAffinity(Expr *pExpr);
+int sqlite3Atoi64(const char*, i64*);
+void sqlite3Error(sqlite3*, int, const char*,...);
+void *sqlite3HexToBlob(sqlite3*, const char *z);
+int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
+const char *sqlite3ErrStr(int);
+int sqlite3ReadSchema(Parse *pParse);
+CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char *,int,int);
+CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName, int nName);
+CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
+Expr *sqlite3ExprSetColl(Parse *pParse, Expr *, Token *);
+int sqlite3CheckCollSeq(Parse *, CollSeq *);
+int sqlite3CheckObjectName(Parse *, const char *);
+void sqlite3VdbeSetChanges(sqlite3 *, int);
+
+const void *sqlite3ValueText(sqlite3_value*, u8);
+int sqlite3ValueBytes(sqlite3_value*, u8);
+void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8,
+ void(*)(void*));
+void sqlite3ValueFree(sqlite3_value*);
+sqlite3_value *sqlite3ValueNew(sqlite3 *);
+char *sqlite3Utf16to8(sqlite3 *, const void*, int);
+int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
+void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);
+#ifndef SQLITE_AMALGAMATION
+extern const unsigned char sqlite3UpperToLower[];
+#endif
+void sqlite3RootPageMoved(Db*, int, int);
+void sqlite3Reindex(Parse*, Token*, Token*);
+void sqlite3AlterFunctions(sqlite3*);
+void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
+int sqlite3GetToken(const unsigned char *, int *);
+void sqlite3NestedParse(Parse*, const char*, ...);
+void sqlite3ExpirePreparedStatements(sqlite3*);
+void sqlite3CodeSubselect(Parse *, Expr *);
+int sqlite3SelectResolve(Parse *, Select *, NameContext *);
+void sqlite3ColumnDefault(Vdbe *, Table *, int);
+void sqlite3AlterFinishAddColumn(Parse *, Token *);
+void sqlite3AlterBeginAddColumn(Parse *, SrcList *);
+CollSeq *sqlite3GetCollSeq(sqlite3*, CollSeq *, const char *, int);
+char sqlite3AffinityType(const Token*);
+void sqlite3Analyze(Parse*, Token*, Token*);
+int sqlite3InvokeBusyHandler(BusyHandler*);
+int sqlite3FindDb(sqlite3*, Token*);
+int sqlite3AnalysisLoad(sqlite3*,int iDB);
+void sqlite3DefaultRowEst(Index*);
+void sqlite3RegisterLikeFunctions(sqlite3*, int);
+int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
+void sqlite3AttachFunctions(sqlite3 *);
+void sqlite3MinimumFileFormat(Parse*, int, int);
+void sqlite3SchemaFree(void *);
+Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
+int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
+KeyInfo *sqlite3IndexKeyinfo(Parse *, Index *);
+int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *,
+ void (*)(sqlite3_context*,int,sqlite3_value **),
+ void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*));
+int sqlite3ApiExit(sqlite3 *db, int);
+int sqlite3OpenTempDatabase(Parse *);
+
+void sqlite3StrAccumAppend(StrAccum*,const char*,int);
+char *sqlite3StrAccumFinish(StrAccum*);
+void sqlite3StrAccumReset(StrAccum*);
+
+
+/*
+** The interface to the LEMON-generated parser
+*/
+void *sqlite3ParserAlloc(void*(*)(size_t));
+void sqlite3ParserFree(void*, void(*)(void*));
+void sqlite3Parser(void*, int, Token, Parse*);
+
+#ifndef SQLITE_OMIT_LOAD_EXTENSION
+ void sqlite3CloseExtensions(sqlite3*);
+ int sqlite3AutoLoadExtensions(sqlite3*);
+#else
+# define sqlite3CloseExtensions(X)
+# define sqlite3AutoLoadExtensions(X) SQLITE_OK
+#endif
+
+#ifndef SQLITE_OMIT_SHARED_CACHE
+ void sqlite3TableLock(Parse *, int, int, u8, const char *);
+#else
+ #define sqlite3TableLock(v,w,x,y,z)
+#endif
+
+#ifdef SQLITE_TEST
+ int sqlite3Utf8To8(unsigned char*);
+#endif
+
+/*
+** The MallocDisallow() and MallocAllow() routines are like asserts.
+** Call them around a section of code that you do not expect to do
+** any memory allocation.
+*/
+#ifdef SQLITE_MEMDEBUG
+ void sqlite3MallocDisallow(void);
+ void sqlite3MallocAllow(void);
+ void sqlite3MallocBenignFailure(int);
+ void sqlite3MallocEnterBenignBlock(int isBenign);
+ void sqlite3MallocLeaveBenignBlock();
+#else
+# define sqlite3MallocDisallow()
+# define sqlite3MallocAllow()
+# define sqlite3MallocBenignFailure(x)
+# define sqlite3MallocEnterBenignBlock(x);
+# define sqlite3MallocLeaveBenignBlock();
+#endif
+
+
+#ifdef SQLITE_OMIT_VIRTUALTABLE
+# define sqlite3VtabClear(X)
+# define sqlite3VtabSync(X,Y) (Y)
+# define sqlite3VtabRollback(X)
+# define sqlite3VtabCommit(X)
+#else
+ void sqlite3VtabClear(Table*);
+ int sqlite3VtabSync(sqlite3 *db, int rc);
+ int sqlite3VtabRollback(sqlite3 *db);
+ int sqlite3VtabCommit(sqlite3 *db);
+#endif
+void sqlite3VtabLock(sqlite3_vtab*);
+void sqlite3VtabUnlock(sqlite3*, sqlite3_vtab*);
+void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*);
+void sqlite3VtabFinishParse(Parse*, Token*);
+void sqlite3VtabArgInit(Parse*);
+void sqlite3VtabArgExtend(Parse*, Token*);
+int sqlite3VtabCallCreate(sqlite3*, int, const char *, char **);
+int sqlite3VtabCallConnect(Parse*, Table*);
+int sqlite3VtabCallDestroy(sqlite3*, int, const char *);
+int sqlite3VtabBegin(sqlite3 *, sqlite3_vtab *);
+FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*);
+void sqlite3InvalidFunction(sqlite3_context*,int,sqlite3_value**);
+int sqlite3Reprepare(Vdbe*);
+void sqlite3ExprListCheckLength(Parse*, ExprList*, int, const char*);
+CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
+
+#define IN_INDEX_ROWID 1
+#define IN_INDEX_EPH 2
+#define IN_INDEX_INDEX 3
+int sqlite3FindInIndex(Parse *, Expr *, int);
+
+#ifdef SQLITE_ENABLE_ATOMIC_WRITE
+ int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int);
+ int sqlite3JournalSize(sqlite3_vfs *);
+ int sqlite3JournalCreate(sqlite3_file *);
+#else
+ #define sqlite3JournalSize(pVfs) ((pVfs)->szOsFile)
+#endif
+
+#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
+ void sqlite3ExprSetHeight(Expr *);
+ int sqlite3SelectExprHeight(Select *);
+#else
+ #define sqlite3ExprSetHeight(x)
+#endif
+
+u32 sqlite3Get4byte(const u8*);
+void sqlite3Put4byte(u8*, u32);
+
+#ifdef SQLITE_SSE
+#include "sseInt.h"
+#endif
+
+#ifdef SQLITE_DEBUG
+ void sqlite3ParserTrace(FILE*, char *);
+#endif
+
+/*
+** If the SQLITE_ENABLE IOTRACE exists then the global variable
+** sqlite3_io_trace is a pointer to a printf-like routine used to
+** print I/O tracing messages.
+*/
+#ifdef SQLITE_ENABLE_IOTRACE
+# define IOTRACE(A) if( sqlite3_io_trace ){ sqlite3_io_trace A; }
+ void sqlite3VdbeIOTraceSql(Vdbe*);
+#else
+# define IOTRACE(A)
+# define sqlite3VdbeIOTraceSql(X)
+#endif
+SQLITE_EXTERN void (*sqlite3_io_trace)(const char*,...);
+
+#endif