/library/Library/WP7/SQLiteDriver/sqlite/sqliteInt_h.cs
C# | 4518 lines | 2102 code | 277 blank | 2139 comment | 174 complexity | 1f13484fd3b40b0cbf5f6932196c0383 MD5 | raw file
- #define SQLITE_MAX_EXPR_DEPTH
- using System;
- using System.Diagnostics;
- using System.Runtime.InteropServices;
- using System.Text;
- using Bitmask = System.UInt64;
- using i16 = System.Int16;
- using i64 = System.Int64;
- using sqlite3_int64 = System.Int64;
- using u8 = System.Byte;
- using u16 = System.UInt16;
- using u32 = System.UInt32;
- using u64 = System.UInt64;
- using unsigned = System.UInt64;
- using Pgno = System.UInt32;
- #if !SQLITE_MAX_VARIABLE_NUMBER
- using ynVar = System.Int16;
- #else
- using ynVar = System.Int32;
- #endif
- namespace Community.CsharpSqlite
- {
- using sqlite3_value = Sqlite3.Mem;
- public partial class Sqlite3
- {
- /*
- ** 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.
- **
- *************************************************************************
- ** Included in SQLite3 port to C#-SQLite; 2008 Noah B Hart
- ** C#-SQLite is an independent reimplementation of the SQLite software library
- **
- ** SQLITE_SOURCE_ID: 2011-01-28 17:03:50 ed759d5a9edb3bba5f48f243df47be29e3fe8cd7
- **
- *************************************************************************
- */
- //#if !_SQLITEINT_H_
- //#define _SQLITEINT_H_
- /*
- ** 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: Red Hat 7.2) but you want your code to work
- ** on an older machine (ex: Red Hat 6.0). If you compile on Red Hat 7.2
- ** without this option, LFS is enable. But LFS does not exist in the kernel
- ** in Red Hat 6.0, so the code won't work. Hence, for maximum binary
- ** portability you should omit LFS.
- **
- ** Similar is true for Mac OS X. LFS is only supported on Mac OS X 9 and later.
- */
- //#if !SQLITE_DISABLE_LFS
- //# define _LARGE_FILE 1
- //# ifndef _FILE_OFFSET_BITS
- //# define _FILE_OFFSET_BITS 64
- //# endif
- //# define _LARGEFILE_SOURCE 1
- //#endif
- /*
- ** Include the configuration header output by 'configure' if we're using the
- ** autoconf-based build
- */
- #if _HAVE_SQLITE_CONFIG_H
- //#include "config.h"
- #endif
- //#include "sqliteLimit.h"
- /* Disable nuisance warnings on Borland compilers */
- //#if (__BORLANDC__)
- //#pragma warn -rch /* unreachable code */
- //#pragma warn -ccc /* Condition is always true or false */
- //#pragma warn -aus /* Assigned value is never used */
- //#pragma warn -csu /* Comparing signed and unsigned */
- //#pragma warn -spa /* Suspicious pointer arithmetic */
- //#endif
- /* Needed for various definitions... */
- //#if !_GNU_SOURCE
- //#define _GNU_SOURCE
- //#endif
- /*
- ** Include standard header files as necessary
- */
- #if HAVE_STDINT_H
- //#include <stdint.h>
- #endif
- #if HAVE_INTTYPES_H
- //#include <inttypes.h>
- #endif
- /*
- ** The number of samples of an index that SQLite takes in order to
- ** construct a histogram of the table content when running ANALYZE
- ** and with SQLITE_ENABLE_STAT2
- */
- //#define SQLITE_INDEX_SAMPLES 10
- public const int SQLITE_INDEX_SAMPLES = 10;
- /*
- ** The following macros are used to cast pointers to integers and
- ** integers to pointers. The way you do this varies from one compiler
- ** to the next, so we have developed the following set of #if statements
- ** to generate appropriate macros for a wide range of compilers.
- **
- ** The correct "ANSI" way to do this is to use the intptr_t type.
- ** Unfortunately, that typedef is not available on all compilers, or
- ** if it is available, it requires an #include of specific headers
- ** that vary from one machine to the next.
- **
- ** Ticket #3860: The llvm-gcc-4.2 compiler from Apple chokes on
- ** the ((void*)&((char*)0)[X]) construct. But MSVC chokes on ((void*)(X)).
- ** So we have to define the macros in different ways depending on the
- ** compiler.
- */
- //#if (__PTRDIFF_TYPE__) /* This case should work for GCC */
- //# define SQLITE_INT_TO_PTR(X) ((void*)(__PTRDIFF_TYPE__)(X))
- //# define SQLITE_PTR_TO_INT(X) ((int)(__PTRDIFF_TYPE__)(X))
- //#elif !defined(__GNUC__) /* Works for compilers other than LLVM */
- //# define SQLITE_INT_TO_PTR(X) ((void*)&((char*)0)[X])
- //# define SQLITE_PTR_TO_INT(X) ((int)(((char*)X)-(char*)0))
- //#elif defined(HAVE_STDINT_H) /* Use this case if we have ANSI headers */
- //# define SQLITE_INT_TO_PTR(X) ((void*)(intptr_t)(X))
- //# define SQLITE_PTR_TO_INT(X) ((int)(intptr_t)(X))
- //#else /* Generates a warning - but it always works */
- //# define SQLITE_INT_TO_PTR(X) ((void*)(X))
- //# define SQLITE_PTR_TO_INT(X) ((int)(X))
- //#endif
- /*
- ** The SQLITE_THREADSAFE macro must be defined as 0, 1, or 2.
- ** 0 means mutexes are permanently disable and the library is never
- ** threadsafe. 1 means the library is serialized which is the highest
- ** level of threadsafety. 2 means the libary is multithreaded - multiple
- ** threads can use SQLite as long as no two threads try to use the same
- ** database connection at the same time.
- **
- ** Older versions of SQLite used an optional THREADSAFE macro.
- ** We support that for legacy.
- */
- #if !SQLITE_THREADSAFE
- //# define SQLITE_THREADSAFE 2
- const int SQLITE_THREADSAFE = 2;
- #else
- const int SQLITE_THREADSAFE = 2; /* IMP: R-07272-22309 */
- #endif
- /*
- ** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1.
- ** It determines whether or not the features related to
- ** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can
- ** be overridden at runtime using the sqlite3_config() API.
- */
- #if !(SQLITE_DEFAULT_MEMSTATUS)
- //# define SQLITE_DEFAULT_MEMSTATUS 1
- const int SQLITE_DEFAULT_MEMSTATUS = 0;
- #else
- const int SQLITE_DEFAULT_MEMSTATUS = 1;
- #endif
- /*
- ** Exactly one of the following macros must be defined in order to
- ** specify which memory allocation subsystem to use.
- **
- ** SQLITE_SYSTEM_MALLOC // Use normal system malloc()
- ** SQLITE_MEMDEBUG // Debugging version of system malloc()
- **
- ** (Historical note: There used to be several other options, but we've
- ** pared it down to just these two.)
- **
- ** If none of the above are defined, then set SQLITE_SYSTEM_MALLOC as
- ** the default.
- */
- //#if (SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)+\
- //# error "At most one of the following compile-time configuration options\
- // is allows: SQLITE_SYSTEM_MALLOC, SQLITE_MEMDEBUG"
- //#endif
- //#if (SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)+\
- //# define SQLITE_SYSTEM_MALLOC 1
- //#endif
- /*
- ** If SQLITE_MALLOC_SOFT_LIMIT is not zero, then try to keep the
- ** sizes of memory allocations below this value where possible.
- */
- #if !(SQLITE_MALLOC_SOFT_LIMIT)
- const int SQLITE_MALLOC_SOFT_LIMIT = 1024;
- #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 !_XOPEN_SOURCE && !__DARWIN__ && !__APPLE__ && SQLITE_THREADSAFE
- const int _XOPEN_SOURCE = 500;//#define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */
- #endif
- /*
- ** The TCL headers are only needed when compiling the TCL bindings.
- */
- #if SQLITE_TCL || 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 !NDEBUG && !SQLITE_DEBUG
- const int NDEBUG = 1;//# define NDEBUG 1
- #endif
- /*
- ** The testcase() macro is used to aid in coverage testing. When
- ** doing coverage testing, the condition inside the argument to
- ** testcase() must be evaluated both true and false in order to
- ** get full branch coverage. The testcase() macro is inserted
- ** to help ensure adequate test coverage in places where simple
- ** condition/decision coverage is inadequate. For example, testcase()
- ** can be used to make sure boundary values are tested. For
- ** bitmask tests, testcase() can be used to make sure each bit
- ** is significant and used at least once. On switch statements
- ** where multiple cases go to the same block of code, testcase()
- ** can insure that all cases are evaluated.
- **
- */
- #if SQLITE_COVERAGE_TEST
- void sqlite3Coverage(int);
- //# define testcase(X) if( X ){ sqlite3Coverage(__LINE__); }
- #else
- //# define testcase(X)
- static void testcase<T>( T X )
- {
- }
- #endif
- /*
- ** The TESTONLY macro is used to enclose variable declarations or
- ** other bits of code that are needed to support the arguments
- ** within testcase() and assert() macros.
- */
- #if !NDEBUG || SQLITE_COVERAGE_TEST
- //# define TESTONLY(X) X
- // -- Need workaround for C#, since inline macros don't exist
- #else
- //# define TESTONLY(X)
- #endif
- /*
- ** Sometimes we need a small amount of code such as a variable initialization
- ** to setup for a later assert() statement. We do not want this code to
- ** appear when assert() is disabled. The following macro is therefore
- ** used to contain that setup code. The "VVA" acronym stands for
- ** "Verification, Validation, and Accreditation". In other words, the
- ** code within VVA_ONLY() will only run during verification processes.
- */
- #if !NDEBUG
- //# define VVA_ONLY(X) X
- #else
- //# define VVA_ONLY(X)
- #endif
- /*
- ** The ALWAYS and NEVER macros surround boolean expressions which
- ** are intended to always be true or false, respectively. Such
- ** expressions could be omitted from the code completely. But they
- ** are included in a few cases in order to enhance the resilience
- ** of SQLite to unexpected behavior - to make the code "self-healing"
- ** or "ductile" rather than being "brittle" and crashing at the first
- ** hint of unplanned behavior.
- **
- ** In other words, ALWAYS and NEVER are added for defensive code.
- **
- ** When doing coverage testing ALWAYS and NEVER are hard-coded to
- ** be true and false so that the unreachable code then specify will
- ** not be counted as untested code.
- */
- #if SQLITE_COVERAGE_TEST
- //# define ALWAYS(X) (1)
- //# define NEVER(X) (0)
- #elif !NDEBUG
- //# define ALWAYS(X) ((X)?1:(assert(0),0))
- static bool ALWAYS( bool X )
- {
- if ( X != true )
- Debug.Assert( false );
- return true;
- }
- static int ALWAYS( int X )
- {
- if ( X == 0 )
- Debug.Assert( false );
- return 1;
- }
- static bool ALWAYS<T>( T X )
- {
- if ( X == null )
- Debug.Assert( false );
- return true;
- }
- //# define NEVER(X) ((X)?(assert(0),1):0)
- static bool NEVER( bool X )
- {
- if ( X == true )
- Debug.Assert( false );
- return false;
- }
- static byte NEVER( byte X )
- {
- if ( X != 0 )
- Debug.Assert( false );
- return 0;
- }
- static int NEVER( int X )
- {
- if ( X != 0 )
- Debug.Assert( false );
- return 0;
- }
- static bool NEVER<T>( T X )
- {
- if ( X != null )
- Debug.Assert( false );
- return false;
- }
- #else
- //# define ALWAYS(X) (X)
- static bool ALWAYS(bool X) { return X; }
- static byte ALWAYS(byte X) { return X; }
- static int ALWAYS(int X) { return X; }
- static bool ALWAYS<T>( T X ) { return true; }
- //# define NEVER(X) (X)
- static bool NEVER(bool X) { return X; }
- static byte NEVER(byte X) { return X; }
- static int NEVER(int X) { return X; }
- static bool NEVER<T>(T X) { return false; }
- #endif
- /*
- ** Return true (non-zero) if the input is a integer that is too large
- ** to fit in 32-bits. This macro is used inside of various testcase()
- ** macros to verify that we have tested SQLite for large-file support.
- */
- static bool IS_BIG_INT( i64 X )
- {
- return ( ( ( X ) & ~(i64)0xffffffff ) != 0 );
- }//#define IS_BIG_INT(X) (((X)&~(i64)0xffffffff)!=0)
- /*
- ** 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 (__GNUC__) && FALSE
- //# define likely(X) __builtin_expect((X),1)
- //# define unlikely(X) __builtin_expect((X),0)
- #else
- //# define likely(X) !!(X)
- static bool likely( bool X )
- {
- return !!X;
- }
- //# define unlikely(X) !!(X)
- static bool unlikely( bool X )
- {
- return !!X;
- }
- #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>
- /*
- ** If compiling for a processor that lacks floating point support,
- ** substitute integer for floating-point
- */
- #if SQLITE_OMIT_FLOATING_POINT
- //# define double sqlite_int64
- //# define float sqlite_int64
- //# define LONGDOUBLE_TYPE sqlite_int64
- //#if !SQLITE_BIG_DBL
- //# define SQLITE_BIG_DBL (((sqlite3_int64)1)<<50)
- //# endif
- //# define SQLITE_OMIT_DATETIME_FUNCS 1
- //# define SQLITE_OMIT_TRACE 1
- //# undef SQLITE_MIXED_ENDIAN_64BIT_FLOAT
- //# undef SQLITE_HAVE_ISNAN
- #endif
- #if !SQLITE_BIG_DBL
- const double SQLITE_BIG_DBL = ( ( (sqlite3_int64)1 ) << 60 );//# 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 #if !statements.
- */
- #if SQLITE_OMIT_TEMPDB
- //#define OMIT_TEMPDB 1
- #else
- static int OMIT_TEMPDB = 0;
- #endif
- /*
- ** 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.
- */
- static public int SQLITE_MAX_FILE_FORMAT = 4;//#define SQLITE_MAX_FILE_FORMAT 4
- //#if !SQLITE_DEFAULT_FILE_FORMAT
- static int SQLITE_DEFAULT_FILE_FORMAT = 1;//# define SQLITE_DEFAULT_FILE_FORMAT 1
- //#endif
- /*
- ** Determine whether triggers are recursive by default. This can be
- ** changed at run-time using a pragma.
- */
- #if !SQLITE_DEFAULT_RECURSIVE_TRIGGERS
- //# define SQLITE_DEFAULT_RECURSIVE_TRIGGERS 0
- static public bool SQLITE_DEFAULT_RECURSIVE_TRIGGERS = false;
- #else
- static public bool SQLITE_DEFAULT_RECURSIVE_TRIGGERS = true;
- #endif
- /*
- ** Provide a default value for SQLITE_TEMP_STORE in case it is not specified
- ** on the command-line
- */
- //#if !SQLITE_TEMP_STORE
- static int SQLITE_TEMP_STORE = 1;//#define SQLITE_TEMP_STORE 1
- //#endif
- /*
- ** GCC does not define the offsetof() macro so we'll have to do it
- ** ourselves.
- */
- #if !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 FALSE //'A' == '\301'
- //# define SQLITE_EBCDIC 1
- #else
- const int SQLITE_ASCII = 1;//#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 '-Du32PTR_TYPE=long long int' ...
- */
- //#if !u32_TYPE
- //# ifdef HAVE_u32_T
- //# define u32_TYPE u32_t
- //# else
- //# define u32_TYPE unsigned int
- //# endif
- //#endif
- //#if !u3216_TYPE
- //# ifdef HAVE_u3216_T
- //# define u3216_TYPE u3216_t
- //# else
- //# define u3216_TYPE unsigned short int
- //# endif
- //#endif
- //#if !INT16_TYPE
- //# ifdef HAVE_INT16_T
- //# define INT16_TYPE int16_t
- //# else
- //# define INT16_TYPE short int
- //# endif
- //#endif
- //#if !u328_TYPE
- //# ifdef HAVE_u328_T
- //# define u328_TYPE u328_t
- //# else
- //# define u328_TYPE unsigned char
- //# endif
- //#endif
- //#if !INT8_TYPE
- //# ifdef HAVE_INT8_T
- //# define INT8_TYPE int8_t
- //# else
- //# define INT8_TYPE signed char
- //# endif
- //#endif
- //#if !LONGDOUBLE_TYPE
- //# define LONGDOUBLE_TYPE long double
- //#endif
- //typedef sqlite_int64 i64; /* 8-byte signed integer */
- //typedef sqlite_u3264 u64; /* 8-byte unsigned integer */
- //typedef u32_TYPE u32; /* 4-byte unsigned integer */
- //typedef u3216_TYPE u16; /* 2-byte unsigned integer */
- //typedef INT16_TYPE i16; /* 2-byte signed integer */
- //typedef u328_TYPE u8; /* 1-byte unsigned integer */
- //typedef INT8_TYPE i8; /* 1-byte signed integer */
- /*
- ** SQLITE_MAX_U32 is a u64 constant that is the maximum u64 value
- ** that can be stored in a u32 without loss of data. The value
- ** is 0x00000000ffffffff. But because of quirks of some compilers, we
- ** have to specify the value in the less intuitive manner shown:
- */
- //#define SQLITE_MAX_U32 ((((u64)1)<<32)-1)
- const u32 SQLITE_MAX_U32 = (u32)( ( ( (u64)1 ) << 32 ) - 1 );
- /*
- ** Macros to determine whether the machine is big or little endian,
- ** evaluated at runtime.
- */
- #if SQLITE_AMALGAMATION
- //const int sqlite3one = 1;
- #else
- const bool sqlite3one = true;
- #endif
- #if i386 || __i386__ || _M_IX86
- const int ;//#define SQLITE_BIGENDIAN 0
- const int ;//#define SQLITE_LITTLEENDIAN 1
- const int ;//#define SQLITE_UTF16NATIVE SQLITE_UTF16LE
- #else
- static u8 SQLITE_BIGENDIAN = 0;//#define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0)
- static u8 SQLITE_LITTLEENDIAN = 1;//#define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
- static u8 SQLITE_UTF16NATIVE = ( SQLITE_BIGENDIAN != 0 ? SQLITE_UTF16BE : SQLITE_UTF16LE );//#define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)
- #endif
- /*
- ** Constants for the largest and smallest possible 64-bit signed integers.
- ** These macros are designed to work correctly on both 32-bit and 64-bit
- ** compilers.
- */
- //#define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32))
- //#define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64)
- const i64 LARGEST_INT64 = i64.MaxValue;//( 0xffffffff | ( ( (i64)0x7fffffff ) << 32 ) );
- const i64 SMALLEST_INT64 = i64.MinValue;//( ( ( i64 ) - 1 ) - LARGEST_INT64 );
- /*
- ** Round up a number to the next larger multiple of 8. This is used
- ** to force 8-byte alignment on 64-bit architectures.
- */
- //#define ROUND8(x) (((x)+7)&~7)
- static int ROUND8( int x )
- {
- return ( x + 7 ) & ~7;
- }
- /*
- ** Round down to the nearest multiple of 8
- */
- //#define ROUNDDOWN8(x) ((x)&~7)
- static int ROUNDDOWN8( int x )
- {
- return x & ~7;
- }
- /*
- ** Assert that the pointer X is aligned to an 8-byte boundary. This
- ** macro is used only within assert() to verify that the code gets
- ** all alignment restrictions correct.
- **
- ** Except, if SQLITE_4_BYTE_ALIGNED_MALLOC is defined, then the
- ** underlying malloc() implemention might return us 4-byte aligned
- ** pointers. In that case, only verify 4-byte alignment.
- */
- //#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC
- //# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&3)==0)
- //#else
- //# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&7)==0)
- //#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;
- public class BusyHandler
- {
- public dxBusy xFunc;//)(void *,int); /* The busy callback */
- public object pArg; /* First arg to busy callback */
- public int nBusy; /* Incremented with each busy call */
- };
- /*
- ** 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.
- */
- const string MASTER_NAME = "sqlite_master";//#define MASTER_NAME "sqlite_master"
- const string TEMP_MASTER_NAME = "sqlite_temp_master";//#define TEMP_MASTER_NAME "sqlite_temp_master"
- /*
- ** The root-page of the master database table.
- */
- const int MASTER_ROOT = 1;//#define MASTER_ROOT 1
- /*
- ** The name of the schema table.
- */
- static string SCHEMA_TABLE( int x ) //#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME)
- {
- return ( ( OMIT_TEMPDB == 0 ) && ( x == 1 ) ? TEMP_MASTER_NAME : MASTER_NAME );
- }
- /*
- ** A convenience macro that returns the number of elements in
- ** an array.
- */
- //#define ArraySize(X) ((int)(sizeof(X)/sizeof(X[0])))
- static int ArraySize<T>( T[] x )
- {
- return x.Length;
- }
- /*
- ** The following value as a destructor means to use sqlite3DbFree().
- ** This is an internal extension to SQLITE_STATIC and SQLITE_TRANSIENT.
- */
- //#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3DbFree)
- static dxDel SQLITE_DYNAMIC;
- /*
- ** When SQLITE_OMIT_WSD is defined, it means that the target platform does
- ** not support Writable Static Data (WSD) such as global and static variables.
- ** All variables must either be on the stack or dynamically allocated from
- ** the heap. When WSD is unsupported, the variable declarations scattered
- ** throughout the SQLite code must become constants instead. The SQLITE_WSD
- ** macro is used for this purpose. And instead of referencing the variable
- ** directly, we use its constant as a key to lookup the run-time allocated
- ** buffer that holds real variable. The constant is also the initializer
- ** for the run-time allocated buffer.
- **
- ** In the usual case where WSD is supported, the SQLITE_WSD and GLOBAL
- ** macros become no-ops and have zero performance impact.
- */
- #if SQLITE_OMIT_WSD
- //#define SQLITE_WSD const
- //#define GLOBAL(t,v) (*(t*)sqlite3_wsd_find((void*)&(v), sizeof(v)))
- //#define sqlite3GlobalConfig GLOBAL(struct Sqlite3Config, sqlite3Config)
- int sqlite3_wsd_init(int N, int J);
- void *sqlite3_wsd_find(void *K, int L);
- #else
- //#define SQLITE_WSD
- //#define GLOBAL(t,v) v
- //#define sqlite3GlobalConfig sqlite3Config
- static Sqlite3Config sqlite3GlobalConfig;
- #endif
- /*
- ** The following macros are used to suppress compiler warnings and to
- ** make it clear to human readers when a function parameter is deliberately
- ** left unused within the body of a function. This usually happens when
- ** a function is called via a function pointer. For example the
- ** implementation of an SQL aggregate step callback may not use the
- ** parameter indicating the number of arguments passed to the aggregate,
- ** if it knows that this is enforced elsewhere.
- **
- ** When a function parameter is not used at all within the body of a function,
- ** it is generally named "NotUsed" or "NotUsed2" to make things even clearer.
- ** However, these macros may also be used to suppress warnings related to
- ** parameters that may or may not be used depending on compilation options.
- ** For example those parameters only used in assert() statements. In these
- ** cases the parameters are named as per the usual conventions.
- */
- //#define UNUSED_PARAMETER(x) (void)(x)
- static void UNUSED_PARAMETER<T>( T x )
- {
- }
- //#define UNUSED_PARAMETER2(x,y) UNUSED_PARAMETER(x),UNUSED_PARAMETER(y)
- static void UNUSED_PARAMETER2<T1, T2>( T1 x, T2 y )
- {
- UNUSED_PARAMETER( x );
- UNUSED_PARAMETER( y );
- }
- /*
- ** Forward references to structures
- */
- //typedef struct AggInfo AggInfo;
- //typedef struct AuthContext AuthContext;
- //typedef struct AutoincInfo AutoincInfo;
- //typedef struct Bitvec Bitvec;
- //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 ExprSpan ExprSpan;
- //typedef struct FKey FKey;
- //typedef struct FuncDestructor FuncDestructor;
- //typedef struct FuncDef FuncDef;
- //typedef struct IdList IdList;
- //typedef struct Index Index;
- //typedef struct IndexSample IndexSample;
- //typedef struct KeyClass KeyClass;
- //typedef struct KeyInfo KeyInfo;
- //typedef struct Lookaside Lookaside;
- //typedef struct LookasideSlot LookasideSlot;
- //typedef struct Module Module;
- //typedef struct NameContext NameContext;
- //typedef struct Parse Parse;
- //typedef struct RowSet RowSet;
- //typedef struct Savepoint Savepoint;
- //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 Trigger Trigger;
- //typedef struct TriggerPrg TriggerPrg;
- //typedef struct TriggerStep TriggerStep;
- //typedef struct UnpackedRecord UnpackedRecord;
- //typedef struct VTable VTable;
- //typedef struct Walker Walker;
- //typedef struct WherePlan WherePlan;
- //typedef struct WhereInfo WhereInfo;
- //typedef struct WhereLevel WhereLevel;
- /*
- ** Defer sourcing vdbe.h and btree.h until after the "u8" and
- ** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque
- ** pointer types (i.e. FuncDef) defined above.
- */
- //#include "btree.h"
- //#include "vdbe.h"
- //#include "pager.h"
- //#include "pcache_g.h"
- //#include "os.h"
- //#include "mutex.h"
- /*
- ** 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.
- */
- public class Db
- {
- public string zName; /* Name of this database */
- public Btree pBt; /* The B Tree structure for this database file */
- public u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */
- public u8 safety_level; /* How aggressive at syncing data to disk */
- public Schema pSchema; /* Pointer to database schema (possibly shared) */
- };
- /*
- ** An instance of the following structure stores a database schema.
- */
- public class Schema
- {
- public int schema_cookie; /* Database schema version number for this file */
- public Hash tblHash = new Hash(); /* All tables indexed by name */
- public Hash idxHash = new Hash(); /* All (named) indices indexed by name */
- public Hash trigHash = new Hash();/* All triggers indexed by name */
- public Hash fkeyHash = new Hash();/* All foreign keys by referenced table name */
- public Table pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */
- public u8 file_format; /* Schema format version for this file */
- public u8 enc; /* Text encoding used by this database */
- public u16 flags; /* Flags associated with this schema */
- public int cache_size; /* Number of pages to use in the cache */
- public Schema Copy()
- {
- if ( this == null )
- return null;
- else
- {
- Schema cp = (Schema)MemberwiseClone();
- return cp;
- }
- }
- public void Clear()
- {
- if ( this != null )
- {
- schema_cookie = 0;
- tblHash = new Hash();
- idxHash = new Hash();
- trigHash = new Hash();
- fkeyHash = new Hash();
- pSeqTab = null;
- flags = 0;
- }
- }
- };
- /*
- ** These macros can be used to test, set, or clear bits in the
- ** Db.pSchema->flags field.
- */
- //#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))==(P))
- static bool DbHasProperty( sqlite3 D, int I, ushort P )
- {
- return ( 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)
- static void DbSetProperty( sqlite3 D, int I, ushort P )
- {
- D.aDb[I].pSchema.flags = (u16)( D.aDb[I].pSchema.flags | P );
- }
- //#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P)
- static void DbClearProperty( sqlite3 D, int I, ushort P )
- {
- D.aDb[I].pSchema.flags = (u16)( D.aDb[I].pSchema.flags & ~P );
- }
- /*
- ** Allowed values for the DB.pSchema->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) */
- const u16 DB_SchemaLoaded = 0x0001;
- const u16 DB_UnresetViews = 0x0002;
- const u16 DB_Empty = 0x0004;
- /*
- ** The number of different kinds of things that can be limited
- ** using the sqlite3_limit() interface.
- */
- //#define SQLITE_N_LIMIT (SQLITE_LIMIT_TRIGGER_DEPTH+1)
- const int SQLITE_N_LIMIT = SQLITE_LIMIT_TRIGGER_DEPTH + 1;
- /*
- ** Lookaside malloc is a set of fixed-size buffers that can be used
- ** to satisfy small transient memory allocation requests for objects
- ** associated with a particular database connection. The use of
- ** lookaside malloc provides a significant performance enhancement
- ** (approx 10%) by avoiding numerous malloc/free requests while parsing
- ** SQL statements.
- **
- ** The Lookaside structure holds configuration information about the
- ** lookaside malloc subsystem. Each available memory allocation in
- ** the lookaside subsystem is stored on a linked list of LookasideSlot
- ** objects.
- **
- ** Lookaside allocations are only allowed for objects that are associated
- ** with a particular database connection. Hence, schema information cannot
- ** be stored in lookaside because in shared cache mode the schema information
- ** is shared by multiple database connections. Therefore, while parsing
- ** schema information, the Lookaside.bEnabled flag is cleared so that
- ** lookaside allocations are not used to construct the schema objects.
- */
- public class Lookaside
- {
- public int sz; /* Size of each buffer in bytes */
- public u8 bEnabled; /* False to disable new lookaside allocations */
- public bool bMalloced; /* True if pStart obtained from sqlite3_malloc() */
- public int nOut; /* Number of buffers currently checked out */
- public int mxOut; /* Highwater mark for nOut */
- public int[] anStat = new int[3]; /* 0: hits. 1: size misses. 2: full misses */
- public LookasideSlot pFree; /* List of available buffers */
- public int pStart; /* First byte of available memory space */
- public int pEnd; /* First byte past end of available space */
- };
- public class LookasideSlot
- {
- public LookasideSlot pNext; /* Next buffer in the list of free buffers */
- };
- /*
- ** A hash table for function definitions.
- **
- ** Hash each FuncDef structure into one of the FuncDefHash.a[] slots.
- ** Collisions are on the FuncDef.pHash chain.
- */
- public class FuncDefHash
- {
- public FuncDef[] a = new FuncDef[23]; /* Hash table for functions */
- };
- /*
- ** Each database connection 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.
- */
- public class sqlite3
- {
- public sqlite3_vfs pVfs; /* OS Interface */
- public int nDb; /* Number of backends currently in use */
- public Db[] aDb = new Db[SQLITE_MAX_ATTACHED]; /* All backends */
- public int flags; /* Miscellaneous flags. See below */
- public int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
- public int errCode; /* Most recent error code (SQLITE_*) */
- public int errMask; /* & result codes with this before returning */
- public u8 autoCommit; /* The auto-commit flag. */
- public u8 temp_store; /* 1: file 2: memory 0: default */
- // Cannot happen under C#
- // public u8 mallocFailed; /* True if we have seen a malloc failure */
- public u8 dfltLockMode; /* Default locking-mode for attached dbs */
- public int nextAutovac; /* Autovac setting after VACUUM if >=0 */
- public u8 suppressErr; /* Do not issue error messages if true */
- public int nextPagesize; /* Pagesize after VACUUM if >0 */
- public int nTable; /* Number of tables in the database */
- public CollSeq pDfltColl; /* The default collating sequence (BINARY) */
- public i64 lastRowid; /* ROWID of most recent insert (see above) */
- public u32 magic; /* Magic number for detect library misuse */
- public int nChange; /* Value returned by sqlite3_changes() */
- public int nTotalChange; /* Value returned by sqlite3_total_changes() */
- public sqlite3_mutex mutex; /* Connection mutex */
- public int[] aLimit = new int[SQLITE_N_LIMIT]; /* Limits */
- public class sqlite3InitInfo
- { /* Information used during initialization */
- public int iDb; /* When back is being initialized */
- public int newTnum; /* Rootpage of table being initialized */
- public u8 busy; /* TRUE if currently initializing */
- public u8 orphanTrigger; /* Last statement is orphaned TEMP trigger */
- };
- public sqlite3InitInfo init = new sqlite3InitInfo();
- public int nExtension; /* Number of loaded extensions */
- public object[] aExtension; /* Array of shared library handles */
- public Vdbe pVdbe; /* List of active virtual machines */
- public int activeVdbeCnt; /* Number of VDBEs currently executing */
- public int writeVdbeCnt; /* Number of active VDBEs that are writing */
- public int vdbeExecCnt; /* Number of nested calls to VdbeExec() */
- public dxTrace xTrace;//)(void*,const char*); /* Trace function */
- public object pTraceArg; /* Argument to the trace function */
- public dxProfile xProfile;//)(void*,const char*,u64); /* Profiling function */
- public object pProfileArg; /* Argument to profile function */
- public object pCommitArg; /* Argument to xCommitCallback() */
- public dxCommitCallback xCommitCallback;//)(void*); /* Invoked at every commit. */
- public object pRollbackArg; /* Argument to xRollbackCallback() */
- public dxRollbackCallback xRollbackCallback;//)(void*); /* Invoked at every commit. */
- public object pUpdateArg;
- public dxUpdateCallback xUpdateCallback;//)(void*,int, const char*,const char*,sqlite_int64);
- #if !SQLITE_OMIT_WAL
- //int (*xWalCallback)(void *, sqlite3 *, const char *, int);
- //void *pWalArg;
- #endif
- public dxCollNeeded xCollNeeded;//)(void*,sqlite3*,int eTextRep,const char*);
- public dxCollNeeded xCollNeeded16;//)(void*,sqlite3*,int eTextRep,const void*);
- public object pCollNeededArg;
- public sqlite3_value pErr; /* Most recent error message */
- public string zErrMsg; /* Most recent error message (UTF-8 encoded) */
- public string zErrMsg16; /* Most recent error message (UTF-16 encoded) */
- public struct _u1
- {
- public bool isInterrupted; /* True if sqlite3_interrupt has been called */
- public double notUsed1; /* Spacer */
- }
- public _u1 u1;
- public Lookaside lookaside = new Lookaside(); /* Lookaside malloc configuration */
- #if !SQLITE_OMIT_AUTHORIZATION
- public dxAuth xAuth;//)(void*,int,const char*,const char*,const char*,const char*);
- /* Access authorization function */
- public object pAuthArg; /* 1st argument to the access auth function */
- #endif
- #if !SQLITE_OMIT_PROGRESS_CALLBACK
- public dxProgress xProgress;//)(void *); /* The progress callback */
- public object pProgressArg; /* Argument to the progress callback */
- public int nProgressOps; /* Number of opcodes for progress callback */
- #endif
- #if !SQLITE_OMIT_VIRTUALTABLE
- public Hash aModule; /* populated by sqlite3_create_module() */
- public Table pVTab; /* vtab with active Connect/Create method */
- public VTable aVTrans; /* Virtual tables with open transactions */
- public int nVTrans; /* Allocated size of aVTrans */
- public VTable pDisconnect; /* Disconnect these in next sqlite3_prepare() */
- #endif
- public FuncDefHash aFunc = new FuncDefHash(); /* Hash table of connection functions */
- public Hash aCollSeq = new Hash(); /* All collating sequences */
- public BusyHandler busyHandler = new BusyHandler(); /* Busy callback */
- public int busyTimeout; /* Busy handler timeout, in msec */
- public Db[] aDbStatic = new Db[] { new Db(), new Db() }; /* Static space for the 2 default backends */
- public Savepoint pSavepoint; /* List of active savepoints */
- public int nSavepoint; /* Number of non-transaction savepoints */
- public int nStatement; /* Number of nested statement-transactions */
- public u8 isTransactionSavepoint; /* True if the outermost savepoint is a TS */
- public i64 nDeferredCons; /* Net deferred constraints this transaction. */
- public int pnBytesFreed; /* If not NULL, increment this in DbFree() */
- #if SQLITE_ENABLE_UNLOCK_NOTIFY
- /* The following variables are all protected by the STATIC_MASTER
- ** mutex, not by sqlite3.mutex. They are used by code in notify.c.
- **
- ** When X.pUnlockConnection==Y, that means that X is waiting for Y to
- ** unlock so that it can proceed.
- **
- ** When X.pBlockingConnection==Y, that means that something that X tried
- ** tried to do recently failed with an SQLITE_LOCKED error due to locks
- ** held by Y.
- */
- sqlite3 *pBlockingConnection; /* Connection that caused SQLITE_LOCKED */
- sqlite3 *pUnlockConnection; /* Connection to watch for unlock */
- void *pUnlockArg; /* Argument to xUnlockNotify */
- void (*xUnlockNotify)(void **, int); /* Unlock notify callback */
- sqlite3 *pNextBlocked; /* Next in list of all blocked connections */
- #endif
- };
- /*
- ** A macro to discover the encoding of a database.
- */
- //#define ENC(db) ((db)->aDb[0].pSchema->enc)
- static u8 ENC( sqlite3 db )
- {
- return db.aDb[0].pSchema.enc;
- }
- /*
- ** Possible values for the sqlite3.flags.
- */
- //#define SQLITE_VdbeTrace 0x00000100 /* True to trace VDBE execution */
- //#define SQLITE_InternChanges 0x00000200 /* Uncommitted Hash table changes */
- //#define SQLITE_FullColNames 0x00000400 /* Show full column names on SELECT */
- //#define SQLITE_ShortColNames 0x00000800 /* Show short columns names */
- //#define SQLITE_CountRows 0x00001000 /* Count rows changed by INSERT, */
- // /* DELETE, or UPDATE and return */
- // /* the count using a callback. */
- //#define SQLITE_NullCallback 0x00002000 /* Invoke the callback once if the */
- // /* result set is empty */
- //#define SQLITE_SqlTrace 0x00004000 /* Debug print SQL as it executes */
- //#define SQLITE_VdbeListing 0x00008000 /* Debug listings of VDBE programs */
- //#define SQLITE_WriteSchema 0x00010000 /* OK to update SQLITE_MASTER */
- //#define SQLITE_NoReadlock 0x00020000 /* Readlocks are omitted when
- // ** accessing read-only databases */
- //#define SQLITE_IgnoreChecks 0x00040000 /* Do not enforce check constraints */
- //#define SQLITE_ReadUncommitted 0x0080000 /* For shared-cache mode */
- //#define SQLITE_LegacyFileFmt 0x00100000 /* Create new databases in format 1 */
- //#define SQLITE_FullFSync 0x00200000 /* Use full fsync on the backend */
- //#define SQLITE_CkptFullFSync 0x00400000 /* Use full fsync for checkpoint */
- //#define SQLITE_RecoveryMode 0x00800000 /* Ignore schema errors */
- //#define SQLITE_ReverseOrder 0x01000000 /* Reverse unordered SELECTs */
- //#define SQLITE_RecTriggers 0x02000000 /* Enable recursive triggers */
- //#define SQLITE_ForeignKeys 0x04000000 /* Enforce foreign key constraints */
- //#define SQLITE_AutoIndex 0x08000000 /* Enable automatic indexes */
- //#define SQLITE_PreferBuiltin 0x10000000 /* Preference to built-in funcs */
- //#define SQLITE_LoadExtension 0x20000000 /* Enable load_extension */
- const int SQLITE_VdbeTrace = 0x00000100;
- const int SQLITE_InternChanges = 0x00000200;
- const int SQLITE_FullColNames = 0x00000400;
- const int SQLITE_ShortColNames = 0x00000800;
- const int SQLITE_CountRows = 0x00001000;
- const int SQLITE_NullCallback = 0x00002000;
- const int SQLITE_SqlTrace = 0x00004000;
- const int SQLITE_VdbeListing = 0x00008000;
- const int SQLITE_WriteSchema = 0x00010000;
- const int SQLITE_NoReadlock = 0x00020000;
- const int SQLITE_IgnoreChecks = 0x00040000;
- const int SQLITE_ReadUncommitted = 0x0080000;
- const int SQLITE_LegacyFileFmt = 0x00100000;
- const int SQLITE_FullFSync = 0x00200000;
- const int SQLITE_CkptFullFSync = 0x00400000;
- const int SQLITE_RecoveryMode = 0x00800000;
- const int SQLITE_ReverseOrder = 0x01000000;
- const int SQLITE_RecTriggers = 0x02000000;
- const int SQLITE_ForeignKeys = 0x04000000;
- const int SQLITE_AutoIndex = 0x08000000;
- const int SQLITE_PreferBuiltin = 0x10000000;
- const int SQLITE_LoadExtension = 0x20000000;
- /*
- ** Bits of the sqlite3.flags field that are used by the
- ** sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS,...) interface.
- ** These must be the low-order bits of the flags field.
- */
- //#define SQLITE_QueryFlattener 0x01 /* Disable query flattening */
- //#define SQLITE_ColumnCache 0x02 /* Disable the column cache */
- //#define SQLITE_IndexSort 0x04 /* Disable indexes for sorting */
- //#define SQLITE_IndexSearch 0x08 /* Disable indexes for searching */
- //#define SQLITE_IndexCover 0x10 /* Disable index covering table */
- //#define SQLITE_GroupByOrder 0x20 /* Disable GROUPBY cover of ORDERBY */
- //#define SQLITE_FactorOutConst 0x40 /* Disable factoring out constants */
- //#define SQLITE_OptMask 0xff /* Mask of all disablable opts */
- const int SQLITE_QueryFlattener = 0x01;
- const int SQLITE_ColumnCache = 0x02;
- const int SQLITE_IndexSort = 0x04;
- const int SQLITE_IndexSearch = 0x08;
- const int SQLITE_IndexCover = 0x10;
- const int SQLITE_GroupByOrder = 0x20;
- const int SQLITE_FactorOutConst = 0x40;
- const int SQLITE_OptMask = 0xff;
- /*
- ** 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.
- */
- const int SQLITE_MAGIC_OPEN = 0x1029a697; //#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */
- const int SQLITE_MAGIC_CLOSED = 0x2f3c2d33; //#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */
- const int SQLITE_MAGIC_SICK = 0x3b771290; //#define SQLITE_MAGIC_SICK 0x4b771290 /* Error and awaiting close */
- const int SQLITE_MAGIC_BUSY = 0x403b7906; //#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */
- const int SQLITE_MAGIC_ERROR = 0x55357930; //#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.
- */
- public class FuncDef
- {
- public i16 nArg; /* Number of arguments. -1 means unlimited */
- public u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */
- public u8 flags; /* Some combination of SQLITE_FUNC_* */
- public object pUserData; /* User data parameter */
- public FuncDef pNext; /* Next function with same name */
- public dxFunc xFunc;//)(sqlite3_context*,int,sqlite3_value**); /* Regular function */
- public dxStep xStep;//)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
- public dxFinal xFinalize;//)(sqlite3_context*); /* Aggregate finalizer */
- public string zName; /* SQL name of the function. */
- public FuncDef pHash; /* Next with a different name but the same hash */
- public FuncDestructor pDestructor; /* Reference counted destructor function */
- public FuncDef()
- {
- }
- public FuncDef( i16 nArg, u8 iPrefEnc, u8 iflags, object pUserData, FuncDef pNext, dxFunc xFunc, dxStep xStep, dxFinal xFinalize, string zName, FuncDef pHash, FuncDestructor pDestructor )
- {
- this.nArg = nArg;
- this.iPrefEnc = iPrefEnc;
- this.flags = iflags;
- this.pUserData = pUserData;
- this.pNext = pNext;
- this.xFunc = xFunc;
- this.xStep = xStep;
- this.xFinalize = xFinalize;
- this.zName = zName;
- this.pHash = pHash;
- this.pDestructor = pDestructor;
- }
- public FuncDef( string zName, u8 iPrefEnc, i16 nArg, int iArg, u8 iflags, dxFunc xFunc )
- {
- this.nArg = nArg;
- this.iPrefEnc = iPrefEnc;
- this.flags = iflags;
- this.pUserData = iArg;
- this.pNext = null;
- this.xFunc = xFunc;
- this.xStep = null;
- this.xFinalize = null;
- this.zName = zName;
- }
- public FuncDef( string zName, u8 iPrefEnc, i16 nArg, int iArg, u8 iflags, dxStep xStep, dxFinal xFinal )
- {
- this.nArg = nArg;
- this.iPrefEnc = iPrefEnc;
- this.flags = iflags;
- this.pUserData = iArg;
- this.pNext = null;
- this.xFunc = null;
- this.xStep = xStep;
- this.xFinalize = xFinal;
- this.zName = zName;
- }
- public FuncDef( string zName, u8 iPrefEnc, i16 nArg, object arg, dxFunc xFunc, u8 flags )
- {
- this.nArg = nArg;
- this.iPrefEnc = iPrefEnc;
- this.flags = flags;
- this.pUserData = arg;
- this.pNext = null;
- this.xFunc = xFunc;
- this.xStep = null;
- this.xFinalize = null;
- this.zName = zName;
- }
- };
- /*
- ** This structure encapsulates a user-function destructor callback (as
- ** configured using create_function_v2()) and a reference counter. When
- ** create_function_v2() is called to create a function with a destructor,
- ** a single object of this type is allocated. FuncDestructor.nRef is set to
- ** the number of FuncDef objects created (either 1 or 3, depending on whether
- ** or not the specified encoding is SQLITE_ANY). The FuncDef.pDestructor
- ** member of each of the new FuncDef objects is set to point to the allocated
- ** FuncDestructor.
- **
- ** Thereafter, when one of the FuncDef objects is deleted, the reference
- ** count on this object is decremented. When it reaches 0, the destructor
- ** is invoked and the FuncDestructor structure freed.
- */
- //struct FuncDestructor {
- // int nRef;
- // void (*xDestroy)(void *);
- // void *pUserData;
- //};
- public class FuncDestructor
- {
- public int nRef;
- public dxFDestroy xDestroy;// (*xDestroy)(void *);
- public object pUserData;
- };
- /*
- ** 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 /* Ephemeral. Delete with VDBE */
- //#define SQLITE_FUNC_NEEDCOLL 0x08 /* sqlite3GetFuncCollSeq() might be called */
- //#define SQLITE_FUNC_PRIVATE 0x10 /* Allowed for internal use only */
- //#define SQLITE_FUNC_COUNT 0x20 /* Built-in count(*) aggregate */
- //#define SQLITE_FUNC_COALESCE 0x40 /* Built-in coalesce() or ifnull() function */
- const int SQLITE_FUNC_LIKE = 0x01; /* Candidate for the LIKE optimization */
- const int SQLITE_FUNC_CASE = 0x02; /* Case-sensitive LIKE-type function */
- const int SQLITE_FUNC_EPHEM = 0x04; /* Ephermeral. Delete with VDBE */
- const int SQLITE_FUNC_NEEDCOLL = 0x08;/* sqlite3GetFuncCollSeq() might be called */
- const int SQLITE_FUNC_PRIVATE = 0x10; /* Allowed for internal use only */
- const int SQLITE_FUNC_COUNT = 0x20; /* Built-in count(*) aggregate */
- const int SQLITE_FUNC_COALESCE = 0x40;/* Built-in coalesce() or ifnull() function */
- /*
- ** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
- ** used to create the initializers for the FuncDef structures.
- **
- ** FUNCTION(zName, nArg, iArg, bNC, xFunc)
- ** Used to create a scalar function definition of a function zName
- ** implemented by C function xFunc that accepts nArg arguments. The
- ** value passed as iArg is cast to a (void*) and made available
- ** as the user-data (sqlite3_user_data()) for the function. If
- ** argument bNC is true, then the SQLITE_FUNC_NEEDCOLL flag is set.
- **
- ** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal)
- ** Used to create an aggregate function definition implemented by
- ** the C functions xStep and xFinal. The first four parameters
- ** are interpreted in the same way as the first 4 parameters to
- ** FUNCTION().
- **
- ** LIKEFUNC(zName, nArg, pArg, flags)
- ** Used to create a scalar function definition of a function zName
- ** that accepts nArg arguments and is implemented by a call to C
- ** function likeFunc. Argument pArg is cast to a (void *) and made
- ** available as the function user-data (sqlite3_user_data()). The
- ** FuncDef.flags variable is set to the value passed as the flags
- ** parameter.
- */
- //#define FUNCTION(zName, nArg, iArg, bNC, xFunc) \
- // {nArg, SQLITE_UTF8, bNC*SQLITE_FUNC_NEEDCOLL, \
- //SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0}
- static FuncDef FUNCTION( string zName, i16 nArg, int iArg, u8 bNC, dxFunc xFunc )
- {
- return new FuncDef( zName, SQLITE_UTF8, nArg, iArg, (u8)( bNC * SQLITE_FUNC_NEEDCOLL ), xFunc );
- }
- //#define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \
- // {nArg, SQLITE_UTF8, bNC*SQLITE_FUNC_NEEDCOLL, \
- //pArg, 0, xFunc, 0, 0, #zName, 0, 0}
- //#define LIKEFUNC(zName, nArg, arg, flags) \
- // {nArg, SQLITE_UTF8, flags, (void *)arg, 0, likeFunc, 0, 0, #zName, 0, 0}
- static FuncDef LIKEFUNC( string zName, i16 nArg, object arg, u8 flags )
- {
- return new FuncDef( zName, SQLITE_UTF8, nArg, arg, likeFunc, flags );
- }
- //#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal) \
- // {nArg, SQLITE_UTF8, nc*SQLITE_FUNC_NEEDCOLL, \
- //SQLITE_INT_TO_PTR(arg), 0, 0, xStep,xFinal,#zName,0,0}
- static FuncDef AGGREGATE( string zName, i16 nArg, int arg, u8 nc, dxStep xStep, dxFinal xFinal )
- {
- return new FuncDef( zName, SQLITE_UTF8, nArg, arg, (u8)( nc * SQLITE_FUNC_NEEDCOLL ), xStep, xFinal );
- }
- /*
- ** All current savepoints are stored in a linked list starting at
- ** sqlite3.pSavepoint. The first element in the list is the most recently
- ** opened savepoint. Savepoints are added to the list by the vdbe
- ** OP_Savepoint instruction.
- */
- //struct Savepoint {
- // char *zName; /* Savepoint name (nul-terminated) */
- // i64 nDeferredCons; /* Number of deferred fk violations */
- // Savepoint *pNext; /* Parent savepoint (if any) */
- //};
- public class Savepoint
- {
- public string zName; /* Savepoint name (nul-terminated) */
- public i64 nDeferredCons; /* Number of deferred fk violations */
- public Savepoint pNext; /* Parent savepoint (if any) */
- };
- /*
- ** The following are used as the second parameter to sqlite3Savepoint(),
- ** and as the P1 argument to the OP_Savepoint instruction.
- */
- const int SAVEPOINT_BEGIN = 0; //#define SAVEPOINT_BEGIN 0
- const int SAVEPOINT_RELEASE = 1; //#define SAVEPOINT_RELEASE 1
- const int SAVEPOINT_ROLLBACK = 2; //#define SAVEPOINT_ROLLBACK 2
- /*
- ** Each SQLite module (virtual table definition) is defined by an
- ** instance of the following structure, stored in the sqlite3.aModule
- ** hash table.
- */
- public class Module
- {
- public sqlite3_module pModule; /* Callback pointers */
- public string zName; /* Name passed to create_module() */
- public object pAux; /* pAux passed to create_module() */
- public dxDestroy xDestroy;//)(void *); /* Module destructor function */
- };
- /*
- ** information about each column of an SQL table is held in an instance
- ** of this structure.
- */
- public class Column
- {
- public string zName; /* Name of this column */
- public Expr pDflt; /* Default value of this column */
- public string zDflt; /* Original text of the default value */
- public string zType; /* Data type for this column */
- public string zColl; /* Collating sequence. If NULL, use the default */
- public u8 notNull; /* True if there is a NOT NULL constraint */
- public u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */
- public char affinity; /* One of the SQLITE_AFF_... values */
- #if !SQLITE_OMIT_VIRTUALTABLE
- public u8 isHidden; /* True if this column is 'hidden' */
- #endif
- public Column Copy()
- {
- Column cp = (Column)MemberwiseClone();
- if ( cp.pDflt != null )
- cp.pDflt = pDflt.Copy();
- return cp;
- }
- };
- /*
- ** 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 separate 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.
- */
- public class CollSeq
- {
- public string zName; /* Name of the collating sequence, UTF-8 encoded */
- public u8 enc; /* Text encoding handled by xCmp() */
- public u8 type; /* One of the SQLITE_COLL_... values below */
- public object pUser; /* First argument to xCmp() */
- public dxCompare xCmp;//)(void*,int, const void*, int, const void*);
- public dxDelCollSeq xDel;//)(void*); /* Destructor for pUser */
- public CollSeq Copy()
- {
- if ( this == null )
- return null;
- else
- {
- CollSeq cp = (CollSeq)MemberwiseClone();
- return cp;
- }
- }
- };
- /*
- ** Allowed values of CollSeq.type:
- */
- const int SQLITE_COLL_BINARY = 1;//#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
- const int SQLITE_COLL_NOCASE = 2;//#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
- const int SQLITE_COLL_REVERSE = 3;//#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
- const int SQLITE_COLL_USER = 0;//#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
- /*
- ** A sort order can be either ASC or DESC.
- */
- const int SQLITE_SO_ASC = 0;//#define SQLITE_SO_ASC 0 /* Sort in ascending order */
- const int SQLITE_SO_DESC = 1;//#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 numbering 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 P4 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.
- */
- const char SQLITE_AFF_TEXT = 'a';//#define SQLITE_AFF_TEXT 'a'
- const char SQLITE_AFF_NONE = 'b';//#define SQLITE_AFF_NONE 'b'
- const char SQLITE_AFF_NUMERIC = 'c';//#define SQLITE_AFF_NUMERIC 'c'
- const char SQLITE_AFF_INTEGER = 'd';//#define SQLITE_AFF_INTEGER 'd'
- const char SQLITE_AFF_REAL = 'e';//#define SQLITE_AFF_REAL 'e'
- //#define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC)
- /*
- ** The SQLITE_AFF_MASK values masks off the significant bits of an
- ** affinity value.
- */
- const int SQLITE_AFF_MASK = 0x67;//#define SQLITE_AFF_MASK 0x67
- /*
- ** Additional bit values that can be ORed with an affinity without
- ** changing the affinity.
- */
- const int SQLITE_JUMPIFNULL = 0x08; //#define SQLITE_JUMPIFNULL 0x08 /* jumps if either operand is NULL */
- const int SQLITE_STOREP2 = 0x10; //#define SQLITE_STOREP2 0x10 /* Store result in reg[P2] rather than jump */
- const int SQLITE_NULLEQ = 0x80; //#define SQLITE_NULLEQ 0x80 /* NULL=NULL */
- /*
- ** An object of this type is created for each virtual table present in
- ** the database schema.
- **
- ** If the database schema is shared, then there is one instance of this
- ** structure for each database connection (sqlite3*) that uses the shared
- ** schema. This is because each database connection requires its own unique
- ** instance of the sqlite3_vtab* handle used to access the virtual table
- ** implementation. sqlite3_vtab* handles can not be shared between
- ** database connections, even when the rest of the in-memory database
- ** schema is shared, as the implementation often stores the database
- ** connection handle passed to it via the xConnect() or xCreate() method
- ** during initialization internally. This database connection handle may
- ** then used by the virtual table implementation to access real tables
- ** within the database. So that they appear as part of the callers
- ** transaction, these accesses need to be made via the same database
- ** connection as that used to execute SQL operations on the virtual table.
- **
- ** All VTable objects that correspond to a single table in a shared
- ** database schema are initially stored in a linked-list pointed to by
- ** the Table.pVTable member variable of the corresponding Table object.
- ** When an sqlite3_prepare() operation is required to access the virtual
- ** table, it searches the list for the VTable that corresponds to the
- ** database connection doing the preparing so as to use the correct
- ** sqlite3_vtab* handle in the compiled query.
- **
- ** When an in-memory Table object is deleted (for example when the
- ** schema is being reloaded for some reason), the VTable objects are not
- ** deleted and the sqlite3_vtab* handles are not xDisconnect()ed
- ** immediately. Instead, they are moved from the Table.pVTable list to
- ** another linked list headed by the sqlite3.pDisconnect member of the
- ** corresponding sqlite3 structure. They are then deleted/xDisconnected
- ** next time a statement is prepared using said sqlite3*. This is done
- ** to avoid deadlock issues involving multiple sqlite3.mutex mutexes.
- ** Refer to comments above function sqlite3VtabUnlockList() for an
- ** explanation as to why it is safe to add an entry to an sqlite3.pDisconnect
- ** list without holding the corresponding sqlite3.mutex mutex.
- **
- ** The memory for objects of this type is always allocated by
- ** sqlite3DbMalloc(), using the connection handle stored in VTable.db as
- ** the first argument.
- */
- public class VTable
- {
- public sqlite3 db; /* Database connection associated with this table */
- public Module pMod; /* Pointer to module implementation */
- public sqlite3_vtab pVtab; /* Pointer to vtab instance */
- public int nRef; /* Number of pointers to this structure */
- public VTable pNext; /* Next in linked list (see above) */
- };
- /*
- ** 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. TF_HasPrimaryKey is set 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 TF_Ephemeral is set
- ** 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.
- */
- public class Table
- {
- public string zName; /* Name of the table or view */
- public int iPKey; /* If not negative, use aCol[iPKey] as the primary key */
- public int nCol; /* Number of columns in this table */
- public Column[] aCol; /* Information about each column */
- public Index pIndex; /* List of SQL indexes on this table. */
- public int tnum; /* Root BTree node for this table (see note above) */
- public u32 nRowEst; /* Estimated rows in table - from sqlite_stat1 table */
- public Select pSelect; /* NULL for tables. Points to definition if a view. */
- public u16 nRef; /* Number of pointers to this Table */
- public u8 tabFlags; /* Mask of TF_* values */
- public u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */
- public FKey pFKey; /* Linked list of all foreign keys in this table */
- public string zColAff; /* String defining the affinity of each column */
- #if !SQLITE_OMIT_CHECK
- public Expr pCheck; /* The AND of all CHECK constraints */
- #endif
- #if !SQLITE_OMIT_ALTERTABLE
- public int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */
- #endif
- #if !SQLITE_OMIT_VIRTUALTABLE
- public VTable pVTable; /* List of VTable objects. */
- public int nModuleArg; /* Number of arguments to the module */
- public string[] azModuleArg;/* Text of all module args. [0] is module name */
- #endif
- public Trigger pTrigger; /* List of SQL triggers on this table */
- public Schema pSchema; /* Schema that contains this table */
- public Table pNextZombie; /* Next on the Parse.pZombieTab list */
- public Table Copy()
- {
- if ( this == null )
- return null;
- else
- {
- Table cp = (Table)MemberwiseClone();
- if ( pIndex != null )
- cp.pIndex = pIndex.Copy();
- if ( pSelect != null )
- cp.pSelect = pSelect.Copy();
- if ( pTrigger != null )
- cp.pTrigger = pTrigger.Copy();
- if ( pFKey != null )
- cp.pFKey = pFKey.Copy();
- #if !SQLITE_OMIT_CHECK
- // Don't Clone Checks, only copy reference via Memberwise Clone above --
- //if ( pCheck != null ) cp.pCheck = pCheck.Copy();
- #endif
- #if !SQLITE_OMIT_VIRTUALTABLE
- if ( pMod != null ) cp.pMod =pMod.Copy();
- if ( pVtab != null ) cp.pVtab =pVtab.Copy();
- #endif
- // Don't Clone Schema, only copy reference via Memberwise Clone above --
- // if ( pSchema != null ) cp.pSchema=pSchema.Copy();
- // Don't Clone pNextZombie, only copy reference via Memberwise Clone above --
- // if ( pNextZombie != null ) cp.pNextZombie=pNextZombie.Copy();
- return cp;
- }
- }
- };
- /*
- ** Allowed values for Tabe.tabFlags.
- */
- //#define TF_Readonly 0x01 /* Read-only system table */
- //#define TF_Ephemeral 0x02 /* An ephemeral table */
- //#define TF_HasPrimaryKey 0x04 /* Table has a primary key */
- //#define TF_Autoincrement 0x08 /* Integer primary key is autoincrement */
- //#define TF_Virtual 0x10 /* Is a virtual table */
- //#define TF_NeedMetadata 0x20 /* aCol[].zType and aCol[].pColl missing */
- /*
- ** Allowed values for Tabe.tabFlags.
- */
- const int TF_Readonly = 0x01; /* Read-only system table */
- const int TF_Ephemeral = 0x02; /* An ephemeral table */
- const int TF_HasPrimaryKey = 0x04; /* Table has a primary key */
- const int TF_Autoincrement = 0x08; /* Integer primary key is autoincrement */
- const int TF_Virtual = 0x10; /* Is a virtual table */
- const int TF_NeedMetadata = 0x20; /* aCol[].zType and aCol[].pColl missing */
- /*
- ** 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.
- */
- #if !SQLITE_OMIT_VIRTUALTABLE
- //# define IsVirtual(X) (((X)->tabFlags & TF_Virtual)!=0)
- static bool IsVirtual( Table X) { return (X.tabFlags & TF_Virtual)!=0;}
- //# define IsHiddenColumn(X) ((X)->isHidden)
- static bool IsVirtual( Column X) { return X.isHidden!=0;}
- #else
- //# define IsVirtual(X) 0
- static bool IsVirtual( Table T )
- {
- return false;
- }
- //# define IsHiddenColumn(X) 0
- static bool IsHiddenColumn( Column C )
- {
- return false;
- }
- #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 existence of the to-table is not checked.
- */
- public class FKey
- {
- public Table pFrom; /* Table containing the REFERENCES clause (aka: Child) */
- public FKey pNextFrom; /* Next foreign key in pFrom */
- public string zTo; /* Name of table that the key points to (aka: Parent) */
- public FKey pNextTo; /* Next foreign key on table named zTo */
- public FKey pPrevTo; /* Previous foreign key on table named zTo */
- public int nCol; /* Number of columns in this key */
- /* EV: R-30323-21917 */
- public u8 isDeferred; /* True if constraint checking is deferred till COMMIT */
- public u8[] aAction = new u8[2]; /* ON DELETE and ON UPDATE actions, respectively */
- public Trigger[] apTrigger = new Trigger[2];/* Triggers for aAction[] actions */
- public class sColMap
- { /* Mapping of columns in pFrom to columns in zTo */
- public int iFrom; /* Index of column in pFrom */
- public string zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */
- };
- public sColMap[] aCol; /* One entry for each of nCol column s */
- public FKey Copy()
- {
- if ( this == null )
- return null;
- else
- {
- FKey cp = (FKey)MemberwiseClone();
- return cp;
- }
- }
- };
- /*
- ** 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.
- */
- const int OE_None = 0;//#define OE_None 0 /* There is no constraint to check */
- const int OE_Rollback = 1;//#define OE_Rollback 1 /* Fail the operation and rollback the transaction */
- const int OE_Abort = 2;//#define OE_Abort 2 /* Back out changes but do no rollback transaction */
- const int OE_Fail = 3;//#define OE_Fail 3 /* Stop the operation but leave all prior changes */
- const int OE_Ignore = 4;//#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */
- const int OE_Replace = 5;//#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */
- const int OE_Restrict = 6;//#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */
- const int OE_SetNull = 7;//#define OE_SetNull 7 /* Set the foreign key value to NULL */
- const int OE_SetDflt = 8;//#define OE_SetDflt 8 /* Set the foreign key value to its default */
- const int OE_Cascade = 9;//#define OE_Cascade 9 /* Cascade the changes */
- const int OE_Default = 99;//#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.
- */
- public class KeyInfo
- {
- public sqlite3 db; /* The database connection */
- public u8 enc; /* Text encoding - one of the SQLITE_UTF* values */
- public u16 nField; /* Number of entries in aColl[] */
- public u8[] aSortOrder; /* Sort order for each column. May be NULL */
- public CollSeq[] aColl = new CollSeq[1]; /* Collating sequence for each term of the key */
- public KeyInfo Copy()
- {
- return (KeyInfo)MemberwiseClone();
- }
- };
- /*
- ** An instance of the following structure holds information about a
- ** single index record that has already been parsed out into individual
- ** values.
- **
- ** A record is an object that contains one or more fields of data.
- ** Records are used to store the content of a table row and to store
- ** the key of an index. A blob encoding of a record is created by
- ** the OP_MakeRecord opcode of the VDBE and is disassembled by the
- ** OP_Column opcode.
- **
- ** This structure holds a record that has already been disassembled
- ** into its constituent fields.
- */
- public class UnpackedRecord
- {
- public KeyInfo pKeyInfo; /* Collation and sort-order information */
- public u16 nField; /* Number of entries in apMem[] */
- public u16 flags; /* Boolean settings. UNPACKED_... below */
- public i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */
- public Mem[] aMem; /* Values */
- };
- /*
- ** Allowed values of UnpackedRecord.flags
- */
- //#define UNPACKED_NEED_FREE 0x0001 /* Memory is from sqlite3Malloc() */
- //#define UNPACKED_NEED_DESTROY 0x0002 /* apMem[]s should all be destroyed */
- //#define UNPACKED_IGNORE_ROWID 0x0004 /* Ignore trailing rowid on key1 */
- //#define UNPACKED_INCRKEY 0x0008 /* Make this key an epsilon larger */
- //#define UNPACKED_PREFIX_MATCH 0x0010 /* A prefix match is considered OK */
- //#define UNPACKED_PREFIX_SEARCH 0x0020 /* A prefix match is considered OK */
- const int UNPACKED_NEED_FREE = 0x0001; /* Memory is from sqlite3Malloc() */
- const int UNPACKED_NEED_DESTROY = 0x0002; /* apMem[]s should all be destroyed */
- const int UNPACKED_IGNORE_ROWID = 0x0004; /* Ignore trailing rowid on key1 */
- const int UNPACKED_INCRKEY = 0x0008; /* Make this key an epsilon larger */
- const int UNPACKED_PREFIX_MATCH = 0x0010; /* A prefix match is considered OK */
- const int UNPACKED_PREFIX_SEARCH = 0x0020; /* A prefix match is considered OK */
- /*
- ** 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.
- */
- public class Index
- {
- public string zName; /* Name of this index */
- public int nColumn; /* Number of columns in the table used by this index */
- public int[] aiColumn; /* Which columns are used by this index. 1st is 0 */
- public int[] aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
- public Table pTable; /* The SQL table being indexed */
- public int tnum; /* Page containing root of this index in database file */
- public u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
- public u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
- public string zColAff; /* String defining the affinity of each column */
- public Index pNext; /* The next index associated with the same table */
- public Schema pSchema; /* Schema containing this index */
- public u8[] aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */
- public string[] azColl; /* Array of collation sequence names for index */
- public IndexSample[] aSample; /* Array of SQLITE_INDEX_SAMPLES samples */
- public Index Copy()
- {
- if ( this == null )
- return null;
- else
- {
- Index cp = (Index)MemberwiseClone();
- return cp;
- }
- }
- };
- /*
- ** Each sample stored in the sqlite_stat2 table is represented in memory
- ** using a structure of this type.
- */
- public class IndexSample
- {
- public struct _u
- { //union {
- public string z; /* Value if eType is SQLITE_TEXT */
- public byte[] zBLOB; /* Value if eType is SQLITE_BLOB */
- public double r; /* Value if eType is SQLITE_FLOAT or SQLITE_INTEGER */
- }
- public _u u;
- public u8 eType; /* SQLITE_NULL, SQLITE_INTEGER ... etc. */
- public u8 nByte; /* Size in byte of text or blob. */
- };
- /*
- ** 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 assumptions about Token.dyn
- ** and Token.n when Token.z==0.
- */
- public class Token
- {
- #if DEBUG_CLASS_TOKEN || DEBUG_CLASS_ALL
- public string _z; /* Text of the token. Not NULL-terminated! */
- public bool dyn;// : 1; /* True for malloced memory, false for static */
- public Int32 _n;// : 31; /* Number of characters in this token */
- public string z
- {
- get { return _z; }
- set { _z = value; }
- }
- public Int32 n
- {
- get { return _n; }
- set { _n = value; }
- }
- #else
- public string z; /* Text of the token. Not NULL-terminated! */
- public Int32 n; /* Number of characters in this token */
- #endif
- public Token()
- {
- this.z = null;
- this.n = 0;
- }
- public Token( string z, Int32 n )
- {
- this.z = z;
- this.n = n;
- }
- public Token Copy()
- {
- if ( this == null )
- return null;
- else
- {
- Token cp = (Token)MemberwiseClone();
- if ( z == null || z.Length == 0 )
- cp.n = 0;
- else
- if ( n > z.Length )
- cp.n = z.Length;
- return cp;
- }
- }
- }
- /*
- ** 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.
- */
- public class AggInfo_col
- { /* For each column used in source tables */
- public Table pTab; /* Source table */
- public int iTable; /* VdbeCursor number of the source table */
- public int iColumn; /* Column number within the source table */
- public int iSorterColumn; /* Column number in the sorting index */
- public int iMem; /* Memory location that acts as accumulator */
- public Expr pExpr; /* The original expression */
- };
- public class AggInfo_func
- { /* For each aggregate function */
- public Expr pExpr; /* Expression encoding the function */
- public FuncDef pFunc; /* The aggregate function implementation */
- public int iMem; /* Memory location that acts as accumulator */
- public int iDistinct; /* Ephemeral table used to enforce DISTINCT */
- }
- public class AggInfo
- {
- public u8 directMode; /* Direct rendering mode means take data directly
- ** from source tables rather than from accumulators */
- public u8 useSortingIdx; /* In direct mode, reference the sorting index rather
- ** than the source table */
- public int sortingIdx; /* VdbeCursor number of the sorting index */
- public ExprList pGroupBy; /* The group by clause */
- public int nSortingColumn; /* Number of columns in the sorting index */
- public AggInfo_col[] aCol;
- public int nColumn; /* Number of used entries in aCol[] */
- public int nColumnAlloc; /* Number of slots allocated for aCol[] */
- public int nAccumulator; /* Number of columns that show through to the output.
- ** Additional columns are used only as parameters to
- ** aggregate functions */
- public AggInfo_func[] aFunc;
- public int nFunc; /* Number of entries in aFunc[] */
- public int nFuncAlloc; /* Number of slots allocated for aFunc[] */
- public AggInfo Copy()
- {
- if ( this == null )
- return null;
- else
- {
- AggInfo cp = (AggInfo)MemberwiseClone();
- if ( pGroupBy != null )
- cp.pGroupBy = pGroupBy.Copy();
- return cp;
- }
- }
- };
- /*
- ** The datatype ynVar is a signed integer, either 16-bit or 32-bit.
- ** Usually it is 16-bits. But if SQLITE_MAX_VARIABLE_NUMBER is greater
- ** than 32767 we have to make it 32-bit. 16-bit is preferred because
- ** it uses less memory in the Expr object, which is a big memory user
- ** in systems with lots of prepared statements. And few applications
- ** need more than about 10 or 20 variables. But some extreme users want
- ** to have prepared statements with over 32767 variables, and for them
- ** the option is available (at compile-time).
- */
- //#if SQLITE_MAX_VARIABLE_NUMBER<=32767
- //typedef i16 ynVar;
- //#else
- //typedef int ynVar;
- //#endif
- /*
- ** 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.
- **
- ** If the expression is an SQL literal (TK_INTEGER, TK_FLOAT, TK_BLOB,
- ** or TK_STRING), then Expr.token contains the text of the SQL literal. If
- ** the expression is a variable (TK_VARIABLE), then Expr.token contains the
- ** variable name. Finally, if the expression is an SQL function (TK_FUNCTION),
- ** then Expr.token contains the name of the function.
- **
- ** Expr.pRight and Expr.pLeft are the left and right subexpressions of a
- ** binary operator. Either or both may be NULL.
- **
- ** Expr.x.pList is a list of arguments if the expression is an SQL function,
- ** a CASE expression or an IN expression of the form "<lhs> IN (<y>, <z>...)".
- ** Expr.x.pSelect is used if the expression is a sub-select or an expression of
- ** the form "<lhs> IN (SELECT ...)". If the EP_xIsSelect bit is set in the
- ** Expr.flags mask, then Expr.x.pSelect is valid. Otherwise, Expr.x.pList is
- ** valid.
- **
- ** 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 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.
- **
- ** 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.
- **
- ** ALLOCATION NOTES:
- **
- ** Expr objects can use a lot of memory space in database schema. To
- ** help reduce memory requirements, sometimes an Expr object will be
- ** truncated. And to reduce the number of memory allocations, sometimes
- ** two or more Expr objects will be stored in a single memory allocation,
- ** together with Expr.zToken strings.
- **
- ** If the EP_Reduced and EP_TokenOnly flags are set when
- ** an Expr object is truncated. When EP_Reduced is set, then all
- ** the child Expr objects in the Expr.pLeft and Expr.pRight subtrees
- ** are contained within the same memory allocation. Note, however, that
- ** the subtrees in Expr.x.pList or Expr.x.pSelect are always separately
- ** allocated, regardless of whether or not EP_Reduced is set.
- */
- public class Expr
- {
- #if DEBUG_CLASS_EXPR || DEBUG_CLASS_ALL
- public u8 _op; /* Operation performed by this node */
- public u8 op
- {
- get { return _op; }
- set { _op = value; }
- }
- #else
- public u8 op; /* Operation performed by this node */
- #endif
- public char affinity; /* The affinity of the column or 0 if not a column */
- #if DEBUG_CLASS_EXPR || DEBUG_CLASS_ALL
- public u16 _flags; /* Various flags. EP_* See below */
- public u16 flags
- {
- get { return _flags; }
- set { _flags = value; }
- }
- public struct _u
- {
- public string _zToken; /* Token value. Zero terminated and dequoted */
- public string zToken
- {
- get { return _zToken; }
- set { _zToken = value; }
- }
- public int iValue; /* Integer value if EP_IntValue */
- }
- #else
- public struct _u
- {
- public string zToken; /* Token value. Zero terminated and dequoted */
- public int iValue; /* Integer value if EP_IntValue */
- }
- public u16 flags; /* Various flags. EP_* See below */
- #endif
- public _u u;
- /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no
- ** space is allocated for the fields below this point. An attempt to
- ** access them will result in a segfault or malfunction.
- *********************************************************************/
- public Expr pLeft; /* Left subnode */
- public Expr pRight; /* Right subnode */
- public struct _x
- {
- public ExprList pList; /* Function arguments or in "<expr> IN (<expr-list)" */
- public Select pSelect; /* Used for sub-selects and "<expr> IN (<select>)" */
- }
- public _x x;
- public CollSeq pColl; /* The collation type of the column or 0 */
- /* If the EP_Reduced flag is set in the Expr.flags mask, then no
- ** space is allocated for the fields below this point. An attempt to
- ** access them will result in a segfault or malfunction.
- *********************************************************************/
- public int iTable; /* TK_COLUMN: cursor number of table holding column
- ** TK_REGISTER: register number
- ** TK_TRIGGER: 1 -> new, 0 -> old */
- public ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid.
- ** TK_VARIABLE: variable number (always >= 1). */
- public i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
- public i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */
- public u8 flags2; /* Second set of flags. EP2_... */
- public u8 op2; /* If a TK_REGISTER, the original value of Expr.op */
- public AggInfo pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
- public Table pTab; /* Table for TK_COLUMN expressions. */
- #if SQLITE_MAX_EXPR_DEPTH //>0
- public int nHeight; /* Height of the tree headed by this node */
- public Table pZombieTab; /* List of Table objects to delete after code gen */
- #endif
- #if DEBUG_CLASS
- public int op
- {
- get { return _op; }
- set { _op = value; }
- }
- #endif
- public void CopyFrom( Expr cf )
- {
- op = cf.op;
- affinity = cf.affinity;
- flags = cf.flags;
- u = cf.u;
- pColl = cf.pColl == null ? null : cf.pColl.Copy();
- iTable = cf.iTable;
- iColumn = cf.iColumn;
- pAggInfo = cf.pAggInfo == null ? null : cf.pAggInfo.Copy();
- iAgg = cf.iAgg;
- iRightJoinTable = cf.iRightJoinTable;
- flags2 = cf.flags2;
- pTab = cf.pTab == null ? null : cf.pTab;
- #if SQLITE_TEST || SQLITE_MAX_EXPR_DEPTH //SQLITE_MAX_EXPR_DEPTH>0
- nHeight = cf.nHeight;
- pZombieTab = cf.pZombieTab;
- #endif
- pLeft = cf.pLeft == null ? null : cf.pLeft.Copy();
- pRight = cf.pRight == null ? null : cf.pRight.Copy();
- x.pList = cf.x.pList == null ? null : cf.x.pList.Copy();
- x.pSelect = cf.x.pSelect == null ? null : cf.x.pSelect.Copy();
- }
- public Expr Copy()
- {
- if ( this == null )
- return null;
- else
- return Copy( flags );
- }
- public Expr Copy( int flag )
- {
- Expr cp = new Expr();
- cp.op = op;
- cp.affinity = affinity;
- cp.flags = flags;
- cp.u = u;
- if ( ( flag & EP_TokenOnly ) != 0 )
- return cp;
- if ( pLeft != null )
- cp.pLeft = pLeft.Copy();
- if ( pRight != null )
- cp.pRight = pRight.Copy();
- cp.x = x;
- cp.pColl = pColl;
- if ( ( flag & EP_Reduced ) != 0 )
- return cp;
- cp.iTable = iTable;
- cp.iColumn = iColumn;
- cp.iAgg = iAgg;
- cp.iRightJoinTable = iRightJoinTable;
- cp.flags2 = flags2;
- cp.op2 = op2;
- cp.pAggInfo = pAggInfo;
- cp.pTab = pTab;
- #if SQLITE_MAX_EXPR_DEPTH //>0
- cp.nHeight = nHeight;
- cp.pZombieTab = pZombieTab;
- #endif
- return cp;
- }
- };
- /*
- ** The following are the meanings of bits in the Expr.flags field.
- */
- //#define EP_FromJoin 0x0001 /* Originated in ON or USING clause of a join */
- //#define EP_Agg 0x0002 /* Contains one or more aggregate functions */
- //#define EP_Resolved 0x0004 /* IDs have been resolved to COLUMNs */
- //#define EP_Error 0x0008 /* Expression contains one or more errors */
- //#define EP_Distinct 0x0010 /* Aggregate function with DISTINCT keyword */
- //#define EP_VarSelect 0x0020 /* pSelect is correlated, not constant */
- //#define EP_DblQuoted 0x0040 /* token.z was originally in "..." */
- //#define EP_InfixFunc 0x0080 /* True for an infix function: LIKE, GLOB, etc */
- //#define EP_ExpCollate 0x0100 /* Collating sequence specified explicitly */
- //#define EP_FixedDest 0x0200 /* Result needed in a specific register */
- //#define EP_IntValue 0x0400 /* Integer value contained in u.iValue */
- //#define EP_xIsSelect 0x0800 /* x.pSelect is valid (otherwise x.pList is) */
- //#define EP_Reduced 0x1000 /* Expr struct is EXPR_REDUCEDSIZE bytes only */
- //#define EP_TokenOnly 0x2000 /* Expr struct is EXPR_TOKENONLYSIZE bytes only */
- //#define EP_Static 0x4000 /* Held in memory not obtained from malloc() */
- const ushort EP_FromJoin = 0x0001;
- const ushort EP_Agg = 0x0002;
- const ushort EP_Resolved = 0x0004;
- const ushort EP_Error = 0x0008;
- const ushort EP_Distinct = 0x0010;
- const ushort EP_VarSelect = 0x0020;
- const ushort EP_DblQuoted = 0x0040;
- const ushort EP_InfixFunc = 0x0080;
- const ushort EP_ExpCollate = 0x0100;
- const ushort EP_FixedDest = 0x0200;
- const ushort EP_IntValue = 0x0400;
- const ushort EP_xIsSelect = 0x0800;
- const ushort EP_Reduced = 0x1000;
- const ushort EP_TokenOnly = 0x2000;
- const ushort EP_Static = 0x4000;
- /*
- ** The following are the meanings of bits in the Expr.flags2 field.
- */
- //#define EP2_MallocedToken 0x0001 /* Need to sqlite3DbFree() Expr.zToken */
- //#define EP2_Irreducible 0x0002 /* Cannot EXPRDUP_REDUCE this Expr */
- const u8 EP2_MallocedToken = 0x0001;
- const u8 EP2_Irreducible = 0x0002;
- /*
- ** The pseudo-routine sqlite3ExprSetIrreducible sets the EP2_Irreducible
- ** flag on an expression structure. This flag is used for VV&A only. The
- ** routine is implemented as a macro that only works when in debugging mode,
- ** so as not to burden production code.
- */
- #if SQLITE_DEBUG
- //# define ExprSetIrreducible(X) (X)->flags2 |= EP2_Irreducible
- static void ExprSetIrreducible( Expr X )
- {
- X.flags2 |= EP2_Irreducible;
- }
- #else
- //# define ExprSetIrreducible(X)
- static void ExprSetIrreducible( Expr X ) { }
- #endif
- /*
- ** These macros can be used to test, set, or clear bits in the
- ** Expr.flags field.
- */
- //#define ExprHasProperty(E,P) (((E)->flags&(P))==(P))
- static bool ExprHasProperty( Expr E, int P )
- {
- return ( E.flags & P ) == P;
- }
- //#define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0)
- static bool ExprHasAnyProperty( Expr E, int P )
- {
- return ( E.flags & P ) != 0;
- }
- //#define ExprSetProperty(E,P) (E)->flags|=(P)
- static void ExprSetProperty( Expr E, int P )
- {
- E.flags = (ushort)( E.flags | P );
- }
- //#define ExprClearProperty(E,P) (E)->flags&=~(P)
- static void ExprClearProperty( Expr E, int P )
- {
- E.flags = (ushort)( E.flags & ~P );
- }
- /*
- ** Macros to determine the number of bytes required by a normal Expr
- ** struct, an Expr struct with the EP_Reduced flag set in Expr.flags
- ** and an Expr struct with the EP_TokenOnly flag set.
- */
- //#define EXPR_FULLSIZE sizeof(Expr) /* Full size */
- //#define EXPR_REDUCEDSIZE offsetof(Expr,iTable) /* Common features */
- //#define EXPR_TOKENONLYSIZE offsetof(Expr,pLeft) /* Fewer features */
- // We don't use these in C#, but define them anyway,
- const int EXPR_FULLSIZE = 48;
- const int EXPR_REDUCEDSIZE = 24;
- const int EXPR_TOKENONLYSIZE = 8;
- /*
- ** Flags passed to the sqlite3ExprDup() function. See the header comment
- ** above sqlite3ExprDup() for details.
- */
- //#define EXPRDUP_REDUCE 0x0001 /* Used reduced-size Expr nodes */
- const int EXPRDUP_REDUCE = 0x0001;
- /*
- ** 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.
- */
- public class ExprList_item
- {
- public Expr pExpr; /* The list of expressions */
- public string zName; /* Token associated with this expression */
- public string zSpan; /* Original text of the expression */
- public u8 sortOrder; /* 1 for DESC or 0 for ASC */
- public u8 done; /* A flag to indicate when processing is finished */
- public u16 iCol; /* For ORDER BY, column number in result set */
- public u16 iAlias; /* Index into Parse.aAlias[] for zName */
- }
- public class ExprList
- {
- public int nExpr; /* Number of expressions on the list */
- public int nAlloc; /* Number of entries allocated below */
- public int iECursor; /* VDBE VdbeCursor associated with this ExprList */
- public ExprList_item[] a; /* One entry for each expression */
- public ExprList Copy()
- {
- if ( this == null )
- return null;
- else
- {
- ExprList cp = (ExprList)MemberwiseClone();
- a.CopyTo( cp.a, 0 );
- return cp;
- }
- }
- };
- /*
- ** An instance of this structure is used by the parser to record both
- ** the parse tree for an expression and the span of input text for an
- ** expression.
- */
- public class ExprSpan
- {
- public Expr pExpr; /* The expression parse tree */
- public string zStart; /* First character of input text */
- public string zEnd; /* One character past the end of input text */
- };
- /*
- ** 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.
- */
- public class IdList_item
- {
- public string zName; /* Name of the identifier */
- public int idx; /* Index in some Table.aCol[] of a column named zName */
- }
- public class IdList
- {
- public IdList_item[] a;
- public int nId; /* Number of identifiers on the list */
- public int nAlloc; /* Number of entries allocated for a[] below */
- public IdList Copy()
- {
- if ( this == null )
- return null;
- else
- {
- IdList cp = (IdList)MemberwiseClone();
- a.CopyTo( cp.a, 0 );
- return cp;
- }
- }
- };
- /*
- ** 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 number of bits in a Bitmask. "BMS" means "BitMask Size".
- */
- //#define BMS ((int)(sizeof(Bitmask)*8))
- const int BMS = ( (int)( sizeof( Bitmask ) * 8 ) );
- /*
- ** 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.
- **
- ** In the colUsed field, the high-order bit (bit 63) is set if the table
- ** contains more than 63 columns and the 64-th or later column is used.
- */
- public class SrcList_item
- {
- public string zDatabase; /* Name of database holding this table */
- public string zName; /* Name of the table */
- public string zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
- public Table pTab; /* An SQL table corresponding to zName */
- public Select pSelect; /* A SELECT statement used in place of a table name */
- public u8 isPopulated; /* Temporary table associated with SELECT is populated */
- public u8 jointype; /* Type of join between this able and the previous */
- public u8 notIndexed; /* True if there is a NOT INDEXED clause */
- #if !SQLITE_OMIT_EXPLAIN
- public u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */
- #endif
- public int iCursor; /* The VDBE cursor number used to access this table */
- public Expr pOn; /* The ON clause of a join */
- public IdList pUsing; /* The USING clause of a join */
- public Bitmask colUsed; /* Bit N (1<<N) set if column N of pTab is used */
- public string zIndex; /* Identifier from "INDEXED BY <zIndex>" clause */
- public Index pIndex; /* Index structure corresponding to zIndex, if any */
- }
- public class SrcList
- {
- public i16 nSrc; /* Number of tables or subqueries in the FROM clause */
- public i16 nAlloc; /* Number of entries allocated in a[] below */
- public SrcList_item[] a;/* One entry for each identifier on the list */
- public SrcList Copy()
- {
- if ( this == null )
- return null;
- else
- {
- SrcList cp = (SrcList)MemberwiseClone();
- if ( a != null )
- a.CopyTo( cp.a, 0 );
- return cp;
- }
- }
- };
- /*
- ** Permitted values of the SrcList.a.jointype field
- */
- const int JT_INNER = 0x0001; //#define JT_INNER 0x0001 /* Any kind of inner or cross join */
- const int JT_CROSS = 0x0002; //#define JT_CROSS 0x0002 /* Explicit use of the CROSS keyword */
- const int JT_NATURAL = 0x0004; //#define JT_NATURAL 0x0004 /* True for a "natural" join */
- const int JT_LEFT = 0x0008; //#define JT_LEFT 0x0008 /* Left outer join */
- const int JT_RIGHT = 0x0010; //#define JT_RIGHT 0x0010 /* Right outer join */
- const int JT_OUTER = 0x0020; //#define JT_OUTER 0x0020 /* The "OUTER" keyword is present */
- const int JT_ERROR = 0x0040; //#define JT_ERROR 0x0040 /* unknown or unsupported join type */
- /*
- ** A WherePlan object holds information that describes a lookup
- ** strategy.
- **
- ** This object is intended to be opaque outside of the where.c module.
- ** It is included here only so that that compiler will know how big it
- ** is. None of the fields in this object should be used outside of
- ** the where.c module.
- **
- ** Within the union, pIdx is only used when wsFlags&WHERE_INDEXED is true.
- ** pTerm is only used when wsFlags&WHERE_MULTI_OR is true. And pVtabIdx
- ** is only used when wsFlags&WHERE_VIRTUALTABLE is true. It is never the
- ** case that more than one of these conditions is true.
- */
- public class WherePlan
- {
- public u32 wsFlags; /* WHERE_* flags that describe the strategy */
- public u32 nEq; /* Number of == constraints */
- public double nRow; /* Estimated number of rows (for EQP) */
- public class _u
- {
- public Index pIdx; /* Index when WHERE_INDEXED is true */
- public WhereTerm pTerm; /* WHERE clause term for OR-search */
- public sqlite3_index_info pVtabIdx; /* Virtual table index to use */
- }
- public _u u = new _u();
- public void Clear()
- {
- wsFlags = 0;
- nEq = 0;
- nRow = 0;
- u.pIdx = null;
- u.pTerm = null;
- u.pVtabIdx = null;
- }
- };
- /*
- ** 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 field is 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.
- ** All other information in the i-th WhereLevel object for the i-th table
- ** after FROM clause ordering.
- */
- public class InLoop
- {
- public int iCur; /* The VDBE cursor used by this IN operator */
- public int addrInTop; /* Top of the IN loop */
- }
- public class WhereLevel
- {
- public WherePlan plan; /* query plan for this element of the FROM clause */
- public int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */
- public int iTabCur; /* The VDBE cursor used to access the table */
- public int iIdxCur; /* The VDBE cursor used to access pIdx */
- public int addrBrk; /* Jump here to break out of the loop */
- public int addrNxt; /* Jump here to start the next IN combination */
- public int addrCont; /* Jump here to continue with the next loop cycle */
- public int addrFirst; /* First instruction of interior of the loop */
- public u8 iFrom; /* Which entry in the FROM clause */
- public u8 op, p5; /* Opcode and P5 of the opcode that ends the loop */
- public int p1, p2; /* Operands of the opcode used to ends the loop */
- public class _u
- {
- public class __in /* Information that depends on plan.wsFlags */
- {
- public int nIn; /* Number of entries in aInLoop[] */
- public InLoop[] aInLoop; /* Information about each nested IN operator */
- }
- public __in _in = new __in(); /* Used when plan.wsFlags&WHERE_IN_ABLE */
- }
- public _u u = new _u();
- /* The following field is really not part of the current level. But
- ** we need a place to cache virtual table index information for each
- ** virtual table in the FROM clause and the WhereLevel structure is
- ** a convenient place since there is one WhereLevel for each FROM clause
- ** element.
- */
- public sqlite3_index_info pIdxInfo; /* Index info for n-th source table */
- };
- /*
- ** Flags appropriate for the wctrlFlags parameter of sqlite3WhereBegin()
- ** and the WhereInfo.wctrlFlags member.
- */
- //#define WHERE_ORDERBY_NORMAL 0x0000 /* No-op */
- //#define WHERE_ORDERBY_MIN 0x0001 /* ORDER BY processing for min() func */
- //#define WHERE_ORDERBY_MAX 0x0002 /* ORDER BY processing for max() func */
- //#define WHERE_ONEPASS_DESIRED 0x0004 /* Want to do one-pass UPDATE/DELETE */
- //#define WHERE_DUPLICATES_OK 0x0008 /* Ok to return a row more than once */
- //#define WHERE_OMIT_OPEN 0x0010 /* Table cursors are already open */
- //#define WHERE_OMIT_CLOSE 0x0020 /* Omit close of table & index cursors */
- //#define WHERE_FORCE_TABLE 0x0040 /* Do not use an index-only search */
- //#define WHERE_ONETABLE_ONLY 0x0080 /* Only code the 1st table in pTabList */
- const int WHERE_ORDERBY_NORMAL = 0x0000;
- const int WHERE_ORDERBY_MIN = 0x0001;
- const int WHERE_ORDERBY_MAX = 0x0002;
- const int WHERE_ONEPASS_DESIRED = 0x0004;
- const int WHERE_DUPLICATES_OK = 0x0008;
- const int WHERE_OMIT_OPEN = 0x0010;
- const int WHERE_OMIT_CLOSE = 0x0020;
- const int WHERE_FORCE_TABLE = 0x0040;
- const int WHERE_ONETABLE_ONLY = 0x0080;
- /*
- ** 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.
- */
- public class WhereInfo
- {
- public Parse pParse; /* Parsing and code generating context */
- public u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */
- public u8 okOnePass; /* Ok to use one-pass algorithm for UPDATE or DELETE */
- public u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */
- public SrcList pTabList; /* List of tables in the join */
- public int iTop; /* The very beginning of the WHERE loop */
- public int iContinue; /* Jump here to continue with next record */
- public int iBreak; /* Jump here to break out of the loop */
- public int nLevel; /* Number of nested loop */
- public WhereClause pWC; /* Decomposition of the WHERE clause */
- public double savedNQueryLoop; /* pParse->nQueryLoop outside the WHERE loop */
- public double nRowOut; /* Estimated number of output rows */
- public WhereLevel[] a = new WhereLevel[] { new WhereLevel() }; /* 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.
- */
- public class NameContext
- {
- public Parse pParse; /* The parser */
- public SrcList pSrcList; /* One or more tables used to resolve names */
- public ExprList pEList; /* Optional list of named expressions */
- public int nRef; /* Number of names resolved by this context */
- public int nErr; /* Number of errors encountered while resolving names */
- public u8 allowAgg; /* Aggregate functions allowed here */
- public u8 hasAgg; /* True if aggregates are seen */
- public u8 isCheck; /* True if resolving names in a CHECK constraint */
- public int nDepth; /* Depth of subquery recursion. 1 for no recursion */
- public AggInfo pAggInfo; /* Information about aggregates at this level */
- public 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 P4_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.
- */
- public class Select
- {
- public ExprList pEList; /* The fields of the result */
- public u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
- public char affinity; /* MakeRecord with this affinity for SRT_Set */
- public u16 selFlags; /* Various SF_* values */
- public SrcList pSrc; /* The FROM clause */
- public Expr pWhere; /* The WHERE clause */
- public ExprList pGroupBy; /* The GROUP BY clause */
- public Expr pHaving; /* The HAVING clause */
- public ExprList pOrderBy; /* The ORDER BY clause */
- public Select pPrior; /* Prior select in a compound select statement */
- public Select pNext; /* Next select to the left in a compound */
- public Select pRightmost; /* Right-most select in a compound select statement */
- public Expr pLimit; /* LIMIT expression. NULL means not used. */
- public Expr pOffset; /* OFFSET expression. NULL means not used. */
- public int iLimit;
- public int iOffset; /* Memory registers holding LIMIT & OFFSET counters */
- public int[] addrOpenEphm = new int[3]; /* OP_OpenEphem opcodes related to this select */
- public double nSelectRow; /* Estimated number of result rows */
- public Select Copy()
- {
- if ( this == null )
- return null;
- else
- {
- Select cp = (Select)MemberwiseClone();
- if ( pEList != null )
- cp.pEList = pEList.Copy();
- if ( pSrc != null )
- cp.pSrc = pSrc.Copy();
- if ( pWhere != null )
- cp.pWhere = pWhere.Copy();
- if ( pGroupBy != null )
- cp.pGroupBy = pGroupBy.Copy();
- if ( pHaving != null )
- cp.pHaving = pHaving.Copy();
- if ( pOrderBy != null )
- cp.pOrderBy = pOrderBy.Copy();
- if ( pPrior != null )
- cp.pPrior = pPrior.Copy();
- if ( pNext != null )
- cp.pNext = pNext.Copy();
- if ( pRightmost != null )
- cp.pRightmost = pRightmost.Copy();
- if ( pLimit != null )
- cp.pLimit = pLimit.Copy();
- if ( pOffset != null )
- cp.pOffset = pOffset.Copy();
- return cp;
- }
- }
- };
- /*
- ** Allowed values for Select.selFlags. The "SF" prefix stands for
- ** "Select Flag".
- */
- //#define SF_Distinct 0x0001 /* Output should be DISTINCT */
- //#define SF_Resolved 0x0002 /* Identifiers have been resolved */
- //#define SF_Aggregate 0x0004 /* Contains aggregate functions */
- //#define SF_UsesEphemeral 0x0008 /* Uses the OpenEphemeral opcode */
- //#define SF_Expanded 0x0010 /* sqlite3SelectExpand() called on this */
- //#define SF_HasTypeInfo 0x0020 /* FROM subqueries have Table metadata */
- const int SF_Distinct = 0x0001; /* Output should be DISTINCT */
- const int SF_Resolved = 0x0002; /* Identifiers have been resolved */
- const int SF_Aggregate = 0x0004; /* Contains aggregate functions */
- const int SF_UsesEphemeral = 0x0008; /* Uses the OpenEphemeral opcode */
- const int SF_Expanded = 0x0010; /* sqlite3SelectExpand() called on this */
- const int SF_HasTypeInfo = 0x0020; /* FROM subqueries have Table metadata */
- /*
- ** The results of a select can be distributed in several ways. The
- ** "SRT" prefix means "SELECT Result Type".
- */
- const int SRT_Union = 1;//#define SRT_Union 1 /* Store result as keys in an index */
- const int SRT_Except = 2;//#define SRT_Except 2 /* Remove result from a UNION index */
- const int SRT_Exists = 3;//#define SRT_Exists 3 /* Store 1 if the result is not empty */
- const int SRT_Discard = 4;//#define SRT_Discard 4 /* Do not save the results anywhere */
- /* The ORDER BY clause is ignored for all of the above */
- //#define IgnorableOrderby(X) ((X->eDest)<=SRT_Discard)
- const int SRT_Output = 5;//#define SRT_Output 5 /* Output each row of result */
- const int SRT_Mem = 6;//#define SRT_Mem 6 /* Store result in a memory cell */
- const int SRT_Set = 7;//#define SRT_Set 7 /* Store results as keys in an index */
- const int SRT_Table = 8;//#define SRT_Table 8 /* Store result as data with an automatic rowid */
- const int SRT_EphemTab = 9;//#define SRT_EphemTab 9 /* Create transient tab and store like SRT_Table /
- const int SRT_Coroutine = 10;//#define SRT_Coroutine 10 /* Generate a single row of result */
- /*
- ** A structure used to customize the behavior of sqlite3Select(). See
- ** comments above sqlite3Select() for details.
- */
- //typedef struct SelectDest SelectDest;
- public class SelectDest
- {
- public u8 eDest; /* How to dispose of the results */
- public char affinity; /* Affinity used when eDest==SRT_Set */
- public int iParm; /* A parameter used by the eDest disposal method */
- public int iMem; /* Base register where results are written */
- public int nMem; /* Number of registers allocated */
- public SelectDest()
- {
- this.eDest = 0;
- this.affinity = '\0';
- this.iParm = 0;
- this.iMem = 0;
- this.nMem = 0;
- }
- public SelectDest( u8 eDest, char affinity, int iParm )
- {
- this.eDest = eDest;
- this.affinity = affinity;
- this.iParm = iParm;
- this.iMem = 0;
- this.nMem = 0;
- }
- public SelectDest( u8 eDest, char affinity, int iParm, int iMem, int nMem )
- {
- this.eDest = eDest;
- this.affinity = affinity;
- this.iParm = iParm;
- this.iMem = iMem;
- this.nMem = nMem;
- }
- };
- /*
- ** During code generation of statements that do inserts into AUTOINCREMENT
- ** tables, the following information is attached to the Table.u.autoInc.p
- ** pointer of each autoincrement table to record some side information that
- ** the code generator needs. We have to keep per-table autoincrement
- ** information in case inserts are down within triggers. Triggers do not
- ** normally coordinate their activities, but we do need to coordinate the
- ** loading and saving of autoincrement information.
- */
- public class AutoincInfo
- {
- public AutoincInfo pNext; /* Next info block in a list of them all */
- public Table pTab; /* Table this info block refers to */
- public int iDb; /* Index in sqlite3.aDb[] of database holding pTab */
- public int regCtr; /* Memory register holding the rowid counter */
- };
- /*
- ** Size of the column cache
- */
- #if !SQLITE_N_COLCACHE
- //# define SQLITE_N_COLCACHE 10
- const int SQLITE_N_COLCACHE = 10;
- #endif
- /*
- ** At least one instance of the following structure is created for each
- ** trigger that may be fired while parsing an INSERT, UPDATE or DELETE
- ** statement. All such objects are stored in the linked list headed at
- ** Parse.pTriggerPrg and deleted once statement compilation has been
- ** completed.
- **
- ** A Vdbe sub-program that implements the body and WHEN clause of trigger
- ** TriggerPrg.pTrigger, assuming a default ON CONFLICT clause of
- ** TriggerPrg.orconf, is stored in the TriggerPrg.pProgram variable.
- ** The Parse.pTriggerPrg list never contains two entries with the same
- ** values for both pTrigger and orconf.
- **
- ** The TriggerPrg.aColmask[0] variable is set to a mask of old.* columns
- ** accessed (or set to 0 for triggers fired as a result of INSERT
- ** statements). Similarly, the TriggerPrg.aColmask[1] variable is set to
- ** a mask of new.* columns used by the program.
- */
- public class TriggerPrg
- {
- public Trigger pTrigger; /* Trigger this program was coded from */
- public int orconf; /* Default ON CONFLICT policy */
- public SubProgram pProgram; /* Program implementing pTrigger/orconf */
- public u32[] aColmask = new u32[2]; /* Masks of old.*, new.* columns accessed */
- public TriggerPrg pNext; /* Next entry in Parse.pTriggerPrg list */
- };
- /*
- ** 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.
- */
- public class yColCache
- {
- public int iTable; /* Table cursor number */
- public int iColumn; /* Table column number */
- public u8 tempReg; /* iReg is a temp register that needs to be freed */
- public int iLevel; /* Nesting level */
- public int iReg; /* Reg with value of this column. 0 means none. */
- public int lru; /* Least recently used entry has the smallest value */
- }
- public class Parse
- {
- public sqlite3 db; /* The main database structure */
- public int rc; /* Return code from execution */
- public string zErrMsg; /* An error message */
- public Vdbe pVdbe; /* An engine for executing database bytecode */
- public u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
- public u8 nameClash; /* A permanent table name clashes with temp table name */
- public u8 checkSchema; /* Causes schema cookie check after an error */
- public u8 nested; /* Number of nested calls to the parser/code generator */
- public u8 parseError; /* True after a parsing error. Ticket #1794 */
- public u8 nTempReg; /* Number of temporary registers in aTempReg[] */
- public u8 nTempInUse; /* Number of aTempReg[] currently checked out */
- public int[] aTempReg = new int[8]; /* Holding area for temporary registers */
- public int nRangeReg; /* Size of the temporary register block */
- public int iRangeReg; /* First register in temporary register block */
- public int nErr; /* Number of errors seen */
- public int nTab; /* Number of previously allocated VDBE cursors */
- public int nMem; /* Number of memory cells used so far */
- public int nSet; /* Number of sets used so far */
- public int ckBase; /* Base register of data during check constraints */
- public int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
- public int iCacheCnt; /* Counter used to generate aColCache[].lru values */
- public u8 nColCache; /* Number of entries in the column cache */
- public u8 iColCache; /* Next entry of the cache to replace */
- public yColCache[] aColCache = new yColCache[SQLITE_N_COLCACHE]; /* One for each valid column cache entry */
- public u32 writeMask; /* Start a write transaction on these databases */
- public u32 cookieMask; /* Bitmask of schema verified databases */
- public u8 isMultiWrite; /* True if statement may affect/insert multiple rows */
- public u8 mayAbort; /* True if statement may throw an ABORT exception */
- public int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
- public int[] cookieValue = new int[SQLITE_MAX_ATTACHED + 2]; /* Values of cookies to verify */
- #if !SQLITE_OMIT_SHARED_CACHE
- public int nTableLock; /* Number of locks in aTableLock */
- public TableLock[] aTableLock; /* Required table locks for shared-cache mode */
- #endif
- public int regRowid; /* Register holding rowid of CREATE TABLE entry */
- public int regRoot; /* Register holding root page number for new objects */
- public AutoincInfo pAinc; /* Information about AUTOINCREMENT counters */
- public int nMaxArg; /* Max args passed to user function by sub-program */
- /* Information used while coding trigger programs. */
- public Parse pToplevel; /* Parse structure for main program (or NULL) */
- public Table pTriggerTab; /* Table triggers are being coded for */
- public u32 oldmask; /* Mask of old.* columns referenced */
- public u32 newmask; /* Mask of new.* columns referenced */
- public u8 eTriggerOp; /* TK_UPDATE, TK_INSERT or TK_DELETE */
- public u8 eOrconf; /* Default ON CONFLICT policy for trigger steps */
- public u8 disableTriggers; /* True to disable triggers */
- public double nQueryLoop; /* Estimated number of iterations of a query */
- /* Above is constant between recursions. Below is reset before and after
- ** each recursion */
- public int nVar; /* Number of '?' variables seen in the SQL so far */
- public int nVarExpr; /* Number of used slots in apVarExpr[] */
- public int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
- public Expr[] apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
- public Vdbe pReprepare; /* VM being reprepared (sqlite3Reprepare()) */
- public int nAlias; /* Number of aliased result set columns */
- public int nAliasAlloc; /* Number of allocated slots for aAlias[] */
- public int[] aAlias; /* Register used to hold aliased result */
- public u8 explain; /* True if the EXPLAIN flag is found on the query */
- public Token sNameToken; /* Token with unqualified schema object name */
- public Token sLastToken = new Token(); /* The last token parsed */
- public StringBuilder zTail; /* All SQL text past the last semicolon parsed */
- public Table pNewTable; /* A table being constructed by CREATE TABLE */
- public Trigger pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
- public string zAuthContext; /* The 6th parameter to db.xAuth callbacks */
- #if !SQLITE_OMIT_VIRTUALTABLE
- public Token sArg; /* Complete text of a module argument */
- public u8 declareVtab; /* True if inside sqlite3_declare_vtab() */
- public int nVtabLock; /* Number of virtual tables to lock */
- public Table[] apVtabLock; /* Pointer to virtual tables needing locking */
- #endif
- public int nHeight; /* Expression tree height of current sub-select */
- public Table pZombieTab; /* List of Table objects to delete after code gen */
- public TriggerPrg pTriggerPrg; /* Linked list of coded triggers */
- #if !SQLITE_OMIT_EXPLAIN
- public int iSelectId;
- public int iNextSelectId;
- #endif
- // We need to create instances of the col cache
- public Parse()
- {
- for ( int i = 0; i < this.aColCache.Length; i++ )
- {
- this.aColCache[i] = new yColCache();
- }
- }
- public void ResetMembers() // Need to clear all the following variables during each recursion
- {
- nVar = 0;
- nVarExpr = 0;
- nVarExprAlloc = 0;
- apVarExpr = null;
- nAlias = 0;
- nAliasAlloc = 0;
- aAlias = null;
- explain = 0;
- sNameToken = new Token();
- sLastToken = new Token();
- zTail.Length = 0;
- pNewTable = null;
- pNewTrigger = null;
- zAuthContext = null;
- #if !SQLITE_OMIT_VIRTUALTABLE
- sArg = new Token();
- declareVtab = 0;
- nVtabLock = 0;
- apVtabLoc = null;
- #endif
- nHeight = 0;
- pZombieTab = null;
- pTriggerPrg = null;
- }
- Parse[] SaveBuf = new Parse[10]; //For Recursion Storage
- public void RestoreMembers() // Need to clear all the following variables during each recursion
- {
- if ( SaveBuf[nested] != null )
- nVar = SaveBuf[nested].nVar;
- nVarExpr = SaveBuf[nested].nVarExpr;
- nVarExprAlloc = SaveBuf[nested].nVarExprAlloc;
- apVarExpr = SaveBuf[nested].apVarExpr;
- nAlias = SaveBuf[nested].nAlias;
- nAliasAlloc = SaveBuf[nested].nAliasAlloc;
- aAlias = SaveBuf[nested].aAlias;
- explain = SaveBuf[nested].explain;
- sNameToken = SaveBuf[nested].sNameToken;
- sLastToken = SaveBuf[nested].sLastToken;
- zTail = SaveBuf[nested].zTail;
- pNewTable = SaveBuf[nested].pNewTable;
- pNewTrigger = SaveBuf[nested].pNewTrigger;
- zAuthContext = SaveBuf[nested].zAuthContext;
- #if !SQLITE_OMIT_VIRTUALTABLE
- sArg = SaveBuf[nested].sArg ;
- declareVtab = SaveBuf[nested].declareVtab;
- nVtabLock = SaveBuf[nested].nVtabLock;
- apVtabLock = SaveBuf[nested].apVtabLock;
- #endif
- nHeight = SaveBuf[nested].nHeight;
- pZombieTab = SaveBuf[nested].pZombieTab;
- pTriggerPrg = SaveBuf[nested].pTriggerPrg;
- SaveBuf[nested] = null;
- }
- public void SaveMembers() // Need to clear all the following variables during each recursion
- {
- SaveBuf[nested] = new Parse();
- SaveBuf[nested].nVar = nVar;
- SaveBuf[nested].nVarExpr = nVarExpr;
- SaveBuf[nested].nVarExprAlloc = nVarExprAlloc;
- SaveBuf[nested].apVarExpr = apVarExpr;
- SaveBuf[nested].nAlias = nAlias;
- SaveBuf[nested].nAliasAlloc = nAliasAlloc;
- SaveBuf[nested].aAlias = aAlias;
- SaveBuf[nested].explain = explain;
- SaveBuf[nested].sNameToken = sNameToken;
- SaveBuf[nested].sLastToken = sLastToken;
- SaveBuf[nested].zTail = zTail;
- SaveBuf[nested].pNewTable = pNewTable;
- SaveBuf[nested].pNewTrigger = pNewTrigger;
- SaveBuf[nested].zAuthContext = zAuthContext;
- #if !SQLITE_OMIT_VIRTUALTABLE
- SaveBuf[nested].sArg = sArg ;
- SaveBuf[nested].declareVtab = declareVtab;
- SaveBuf[nested].nVtabLock = nVtabLock ;
- SaveBuf[nested].apVtabLock = apVtabLock ;
- #endif
- SaveBuf[nested].nHeight = nHeight;
- SaveBuf[nested].pZombieTab = pZombieTab;
- SaveBuf[nested].pTriggerPrg = pTriggerPrg;
- }
- };
- #if SQLITE_OMIT_VIRTUALTABLE
- static bool IN_DECLARE_VTAB = false;//#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.
- */
- public class AuthContext
- {
- public string zAuthContext; /* Put saved Parse.zAuthContext here */
- public Parse pParse; /* The Parse structure */
- };
- /*
- ** Bitfield flags for P5 value in OP_Insert and OP_Delete
- */
- //#define OPFLAG_NCHANGE 0x01 /* Set to update db->nChange */
- //#define OPFLAG_LASTROWID 0x02 /* Set to update db->lastRowid */
- //#define OPFLAG_ISUPDATE 0x04 /* This OP_Insert is an sql UPDATE */
- //#define OPFLAG_APPEND 0x08 /* This is likely to be an append */
- //#define OPFLAG_USESEEKRESULT 0x10 /* Try to avoid a seek in BtreeInsert() */
- //#define OPFLAG_CLEARCACHE 0x20 /* Clear pseudo-table cache in OP_Column */
- const byte OPFLAG_NCHANGE = 0x01;
- const byte OPFLAG_LASTROWID = 0x02;
- const byte OPFLAG_ISUPDATE = 0x04;
- const byte OPFLAG_APPEND = 0x08;
- const byte OPFLAG_USESEEKRESULT = 0x10;
- const byte OPFLAG_CLEARCACHE = 0x20;
- /*
- * 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.
- */
- public class Trigger
- {
- public string zName; /* The name of the trigger */
- public string table; /* The table or view to which the trigger applies */
- public u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
- public u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
- public Expr pWhen; /* The WHEN clause of the expression (may be NULL) */
- public IdList pColumns; /* If this is an UPDATE OF <column-list> trigger,
- the <column-list> is stored here */
- public Schema pSchema; /* Schema containing the trigger */
- public Schema pTabSchema; /* Schema containing the table */
- public TriggerStep step_list; /* Link list of trigger program steps */
- public Trigger pNext; /* Next trigger associated with the table */
- public Trigger Copy()
- {
- if ( this == null )
- return null;
- else
- {
- Trigger cp = (Trigger)MemberwiseClone();
- if ( pWhen != null )
- cp.pWhen = pWhen.Copy();
- if ( pColumns != null )
- cp.pColumns = pColumns.Copy();
- if ( pSchema != null )
- cp.pSchema = pSchema.Copy();
- if ( pTabSchema != null )
- cp.pTabSchema = pTabSchema.Copy();
- if ( step_list != null )
- cp.step_list = step_list.Copy();
- if ( pNext != null )
- cp.pNext = pNext.Copy();
- return cp;
- }
- }
- };
- /*
- ** 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.
- */
- const u8 TRIGGER_BEFORE = 1;//#define TRIGGER_BEFORE 1
- const u8 TRIGGER_AFTER = 2;//#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 quoted 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 quoted 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 quoted 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.
- *
- */
- public class TriggerStep
- {
- public u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */
- public u8 orconf; /* OE_Rollback etc. */
- public Trigger pTrig; /* The trigger that this step is a part of */
- public Select pSelect; /* SELECT statment or RHS of INSERT INTO .. SELECT ... */
- public Token target; /* Target table for DELETE, UPDATE, INSERT */
- public Expr pWhere; /* The WHERE clause for DELETE or UPDATE steps */
- public ExprList pExprList; /* SET clause for UPDATE. VALUES clause for INSERT */
- public IdList pIdList; /* Column names for INSERT */
- public TriggerStep pNext; /* Next in the link-list */
- public TriggerStep pLast; /* Last element in link-list. Valid for 1st elem only */
- public TriggerStep()
- {
- target = new Token();
- }
- public TriggerStep Copy()
- {
- if ( this == null )
- return null;
- else
- {
- TriggerStep cp = (TriggerStep)MemberwiseClone();
- return cp;
- }
- }
- };
- /*
- ** 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;
- public class DbFixer
- {
- public Parse pParse; /* The parsing context. Error messages written here */
- public string zDb; /* Make sure all objects are contained in this database */
- public string zType; /* Type of the container - used for error messages */
- public 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.
- */
- public class StrAccum
- {
- public sqlite3 db; /* Optional database for lookaside. Can be NULL */
- //public StringBuilder zBase; /* A base allocation. Not from malloc. */
- public StringBuilder zText; /* The string collected so far */
- //public int nChar; /* Length of the string so far */
- //public int nAlloc; /* Amount of space allocated in zText */
- public int mxAlloc; /* Maximum allowed string length */
- // Cannot happen under C#
- //public u8 mallocFailed; /* Becomes true if any memory allocation fails */
- //public u8 useMalloc; /* 0: none, 1: sqlite3DbMalloc, 2: sqlite3_malloc */
- //public u8 tooBig; /* Becomes true if string size exceeds limits */
- public Mem Context;
- public StrAccum( int n )
- {
- db = null;
- //zBase = new StringBuilder( n );
- zText = new StringBuilder( n );
- //nChar = 0;
- //nAlloc = n;
- mxAlloc = 0;
- //useMalloc = 0;
- //tooBig = 0;
- Context = null;
- }
- public i64 nChar
- {
- get
- {
- return zText.Length;
- }
- }
- public bool tooBig
- {
- get
- {
- return mxAlloc > 0 && zText.Length > mxAlloc;
- }
- }
- };
- /*
- ** A pointer to this structure is used to communicate information
- ** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
- */
- public class InitData
- {
- public sqlite3 db; /* The database being initialized */
- public int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */
- public string pzErrMsg; /* Error message stored here */
- public int rc; /* Result code stored here */
- }
- /*
- ** Structure containing global configuration data for the SQLite library.
- **
- ** This structure also contains some state information.
- */
- public class Sqlite3Config
- {
- public bool bMemstat; /* True to enable memory status */
- public bool bCoreMutex; /* True to enable core mutexing */
- public bool bFullMutex; /* True to enable full mutexing */
- public int mxStrlen; /* Maximum string length */
- public int szLookaside; /* Default lookaside buffer size */
- public int nLookaside; /* Default lookaside buffer count */
- public sqlite3_mem_methods m; /* Low-level memory allocation interface */
- public sqlite3_mutex_methods mutex; /* Low-level mutex interface */
- public sqlite3_pcache_methods pcache; /* Low-level page-cache interface */
- public byte[] pHeap; /* Heap storage space */
- public int nHeap; /* Size of pHeap[] */
- public int mnReq, mxReq; /* Min and max heap requests sizes */
- public byte[][] pScratch2; /* Scratch memory */
- public byte[][] pScratch; /* Scratch memory */
- public int szScratch; /* Size of each scratch buffer */
- public int nScratch; /* Number of scratch buffers */
- public MemPage pPage; /* Page cache memory */
- public int szPage; /* Size of each page in pPage[] */
- public int nPage; /* Number of pages in pPage[] */
- public int mxParserStack; /* maximum depth of the parser stack */
- public bool sharedCacheEnabled; /* true if shared-cache mode enabled */
- /* The above might be initialized to non-zero. The following need to always
- ** initially be zero, however. */
- public int isInit; /* True after initialization has finished */
- public int inProgress; /* True while initialization in progress */
- public int isMutexInit; /* True after mutexes are initialized */
- public int isMallocInit; /* True after malloc is initialized */
- public int isPCacheInit; /* True after malloc is initialized */
- public sqlite3_mutex pInitMutex; /* Mutex used by sqlite3_initialize() */
- public int nRefInitMutex; /* Number of users of pInitMutex */
- public dxLog xLog; //void (*xLog)(void*,int,const char*); /* Function for logging */
- public object pLogArg; /* First argument to xLog() */
- public Sqlite3Config( int bMemstat, int bCoreMutex, bool bFullMutex, int mxStrlen, int szLookaside, int nLookaside
- , sqlite3_mem_methods m
- , sqlite3_mutex_methods mutex
- , sqlite3_pcache_methods pcache
- , byte[] pHeap
- , int nHeap,
- int mnReq, int mxReq
- , byte[][] pScratch
- , int szScratch
- , int nScratch
- , MemPage pPage
- , int szPage
- , int nPage
- , int mxParserStack
- , bool sharedCacheEnabled
- , int isInit
- , int inProgress
- , int isMutexInit
- , int isMallocInit
- , int isPCacheInit
- , sqlite3_mutex pInitMutex
- , int nRefInitMutex
- , dxLog xLog
- , object pLogArg
- )
- {
- this.bMemstat = bMemstat != 0;
- this.bCoreMutex = bCoreMutex != 0;
- this.bFullMutex = bFullMutex;
- this.mxStrlen = mxStrlen;
- this.szLookaside = szLookaside;
- this.nLookaside = nLookaside;
- this.m = m;
- this.mutex = mutex;
- this.pcache = pcache;
- this.pHeap = pHeap;
- this.nHeap = nHeap;
- this.mnReq = mnReq;
- this.mxReq = mxReq;
- this.pScratch = pScratch;
- this.szScratch = szScratch;
- this.nScratch = nScratch;
- this.pPage = pPage;
- this.szPage = szPage;
- this.nPage = nPage;
- this.mxParserStack = mxParserStack;
- this.sharedCacheEnabled = sharedCacheEnabled;
- this.isInit = isInit;
- this.inProgress = inProgress;
- this.isMutexInit = isMutexInit;
- this.isMallocInit = isMallocInit;
- this.isPCacheInit = isPCacheInit;
- this.pInitMutex = pInitMutex;
- this.nRefInitMutex = nRefInitMutex;
- this.xLog = xLog;
- this.pLogArg = pLogArg;
- }
- };
- /*
- ** Context pointer passed down through the tree-walk.
- */
- public class Walker
- {
- public dxExprCallback xExprCallback; //)(Walker*, Expr*); /* Callback for expressions */
- public dxSelectCallback xSelectCallback; //)(Walker*,Select*); /* Callback for SELECTs */
- public Parse pParse; /* Parser context. */
- public struct uw
- { /* Extra data for callback */
- public NameContext pNC; /* Naming context */
- public int i; /* Integer value */
- }
- public uw u;
- };
- /* Forward declarations */
- //int sqlite3WalkExpr(Walker*, Expr*);
- //int sqlite3WalkExprList(Walker*, ExprList*);
- //int sqlite3WalkSelect(Walker*, Select*);
- //int sqlite3WalkSelectExpr(Walker*, Select*);
- //int sqlite3WalkSelectFrom(Walker*, Select*);
- /*
- ** Return code from the parse-tree walking primitives and their
- ** callbacks.
- */
- //#define WRC_Continue 0 /* Continue down into children */
- //#define WRC_Prune 1 /* Omit children but continue walking siblings */
- //#define WRC_Abort 2 /* Abandon the tree walk */
- const int WRC_Continue = 0;
- const int WRC_Prune = 1;
- const int WRC_Abort = 2;
- /*
- ** 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++; } \
- // } \
- //}
- static void SQLITE_SKIP_UTF8( string zIn, ref int iz )
- {
- iz++;
- if ( iz < zIn.Length && zIn[iz - 1] >= 0xC0 )
- {
- while ( iz < zIn.Length && ( zIn[iz] & 0xC0 ) == 0x80 )
- {
- iz++;
- }
- }
- }
- static void SQLITE_SKIP_UTF8(
- byte[] zIn, ref int iz )
- {
- iz++;
- if ( iz < zIn.Length && zIn[iz - 1] >= 0xC0 )
- {
- while ( iz < zIn.Length && ( zIn[iz] & 0xC0 ) == 0x80 )
- {
- iz++;
- }
- }
- }
- /*
- ** The SQLITE_*_BKPT macros are substitutes for the error codes with
- ** the same name but without the _BKPT suffix. These macros invoke
- ** routines that report the line-number on which the error originated
- ** using sqlite3_log(). The routines also provide a convenient place
- ** to set a debugger breakpoint.
- */
- //int sqlite3CorruptError(int);
- //int sqlite3MisuseError(int);
- //int sqlite3CantopenError(int);
- #if DEBUG
- //#define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__)
- static int SQLITE_CORRUPT_BKPT()
- {
- return sqlite3CorruptError( 0 );
- }
- //#define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__)
- static int SQLITE_MISUSE_BKPT()
- {
- return sqlite3MisuseError( 0 );
- }
- //#define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__)
- static int SQLITE_CANTOPEN_BKPT()
- {
- return sqlite3CantopenError( 0 );
- }
- #else
- static int SQLITE_CORRUPT_BKPT() {return SQLITE_CORRUPT;}
- static int SQLITE_MISUSE_BKPT() {return SQLITE_MISUSE;}
- static int SQLITE_CANTOPEN_BKPT() {return SQLITE_CANTOPEN;}
- #endif
- /*
- ** FTS4 is really an extension for FTS3. It is enabled using the
- ** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also all
- ** the SQLITE_ENABLE_FTS4 macro to serve as an alisse for SQLITE_ENABLE_FTS3.
- */
- //#if (SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)
- //# define SQLITE_ENABLE_FTS3
- //#endif
- /*
- ** The ctype.h header is needed for non-ASCII systems. It is also
- ** needed by FTS3 when FTS3 is included in the amalgamation.
- */
- //#if !defined(SQLITE_ASCII) || \
- // (defined(SQLITE_ENABLE_FTS3) && defined(SQLITE_AMALGAMATION))
- //# include <ctype.h>
- //#endif
- /*
- ** The following macros mimic the standard library functions toupper(),
- ** isspace(), isalnum(), isdigit() and isxdigit(), respectively. The
- ** sqlite versions only work for ASCII characters, regardless of locale.
- */
- #if SQLITE_ASCII
- //# define sqlite3Toupper(x) ((x)&~(sqlite3CtypeMap[(unsigned char)(x)]&0x20))
- //# define sqlite3Isspace(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x01)
- static bool sqlite3Isspace( byte x )
- {
- return ( sqlite3CtypeMap[(byte)( x )] & 0x01 ) != 0;
- }
- static bool sqlite3Isspace( char x )
- {
- return x < 256 && ( sqlite3CtypeMap[(byte)( x )] & 0x01 ) != 0;
- }
- //# define sqlite3Isalnum(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x06)
- static bool sqlite3Isalnum( byte x )
- {
- return ( sqlite3CtypeMap[(byte)( x )] & 0x06 ) != 0;
- }
- static bool sqlite3Isalnum( char x )
- {
- return x < 256 && ( sqlite3CtypeMap[(byte)( x )] & 0x06 ) != 0;
- }
- //# define sqlite3Isalpha(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x02)
- //# define sqlite3Isdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x04)
- static bool sqlite3Isdigit( byte x )
- {
- return ( sqlite3CtypeMap[( (byte)x )] & 0x04 ) != 0;
- }
- static bool sqlite3Isdigit( char x )
- {
- return x < 256 && ( sqlite3CtypeMap[( (byte)x )] & 0x04 ) != 0;
- }
- //# define sqlite3Isxdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x08)
- static bool sqlite3Isxdigit( byte x )
- {
- return ( sqlite3CtypeMap[( (byte)x )] & 0x08 ) != 0;
- }
- static bool sqlite3Isxdigit( char x )
- {
- return x < 256 && ( sqlite3CtypeMap[( (byte)x )] & 0x08 ) != 0;
- }
- //# define sqlite3Tolower(x) (sqlite3UpperToLower[(unsigned char)(x)])
- #else
- //# define sqlite3Toupper(x) toupper((unsigned char)(x))
- //# define sqlite3Isspace(x) isspace((unsigned char)(x))
- //# define sqlite3Isalnum(x) isalnum((unsigned char)(x))
- //# define sqlite3Isalpha(x) isalpha((unsigned char)(x))
- //# define sqlite3Isdigit(x) isdigit((unsigned char)(x))
- //# define sqlite3Isxdigit(x) isxdigit((unsigned char)(x))
- //# define sqlite3Tolower(x) tolower((unsigned char)(x))
- #endif
- /*
- ** Internal function prototypes
- */
- //int sqlite3StrICmp(const char *, const char *);
- //int sqlite3Strlen30(const char*);
- //#define sqlite3StrNICmp sqlite3_strnicmp
- //int sqlite3MallocInit(void);
- //void sqlite3MallocEnd(void);
- //void *sqlite3Malloc(int);
- //void *sqlite3MallocZero(int);
- //void *sqlite3DbMallocZero(sqlite3*, int);
- //void *sqlite3DbMallocRaw(sqlite3*, int);
- //char *sqlite3DbStrDup(sqlite3*,const char*);
- //char *sqlite3DbStrNDup(sqlite3*,const char*, int);
- //void *sqlite3Realloc(void*, int);
- //void *sqlite3DbReallocOrFree(sqlite3 *, void *, int);
- //void *sqlite3DbRealloc(sqlite3 *, void *, int);
- //void sqlite3DbFree(sqlite3*, void*);
- //int sqlite3MallocSize(void*);
- //int sqlite3DbMallocSize(sqlite3*, void*);
- //void *sqlite3ScratchMalloc(int);
- //void //sqlite3ScratchFree(void*);
- //void *sqlite3PageMalloc(int);
- //void sqlite3PageFree(void*);
- //void sqlite3MemSetDefault(void);
- //void sqlite3BenignMallocHooks(void (*)(void), void (*)(void));
- //int sqlite3HeapNearlyFull(void);
- /*
- ** On systems with ample stack space and that support alloca(), make
- ** use of alloca() to obtain space for large automatic objects. By default,
- ** obtain space from malloc().
- **
- ** The alloca() routine never returns NULL. This will cause code paths
- ** that deal with sqlite3StackAlloc() failures to be unreachable.
- */
- #if SQLITE_USE_ALLOCA
- //# define sqlite3StackAllocRaw(D,N) alloca(N)
- //# define sqlite3StackAllocZero(D,N) memset(alloca(N), 0, N)
- //# define sqlite3StackFree(D,P)
- #else
- #if FALSE
- //# define sqlite3StackAllocRaw(D,N) sqlite3DbMallocRaw(D,N)
- static void sqlite3StackAllocRaw( sqlite3 D, int N ) { sqlite3DbMallocRaw( D, N ); }
- //# define sqlite3StackAllocZero(D,N) sqlite3DbMallocZero(D,N)
- static void sqlite3StackAllocZero( sqlite3 D, int N ) { sqlite3DbMallocZero( D, N ); }
- //# define sqlite3StackFree(D,P) sqlite3DbFree(D,P)
- static void sqlite3StackFree( sqlite3 D, object P ) {sqlite3DbFree( D, P ); }
- #endif
- #endif
- #if SQLITE_ENABLE_MEMSYS3
- const sqlite3_mem_methods *sqlite3MemGetMemsys3(void);
- #endif
- #if SQLITE_ENABLE_MEMSYS5
- const sqlite3_mem_methods *sqlite3MemGetMemsys5(void);
- #endif
- #if !SQLITE_MUTEX_OMIT
- // sqlite3_mutex_methods const *sqlite3DefaultMutex(void);
- // sqlite3_mutex_methods const *sqlite3NoopMutex(void);
- // sqlite3_mutex *sqlite3MutexAlloc(int);
- // int sqlite3MutexInit(void);
- // int sqlite3MutexEnd(void);
- #endif
- //int sqlite3StatusValue(int);
- //void sqlite3StatusAdd(int, int);
- //void sqlite3StatusSet(int, int);
- //#ifndef SQLITE_OMIT_FLOATING_POINT
- // int sqlite3IsNaN(double);
- //#else
- //# define sqlite3IsNaN(X) 0
- //#endif
- //void sqlite3VXPrintf(StrAccum*, int, const char*, va_list);
- #if!SQLITE_OMIT_TRACE
- //void sqlite3XPrintf(StrAccum*, const char*, ...);
- #endif
- //char *sqlite3MPrintf(sqlite3*,const char*, ...);
- //char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
- //char *sqlite3MAppendf(sqlite3*,char*,const char*,...);
- #if SQLITE_TEST || SQLITE_DEBUG
- // void sqlite3DebugPrintf(const char*, ...);
- #endif
- #if SQLITE_TEST
- // void *sqlite3TestTextToPtr(const char*);
- #endif
- //void sqlite3SetString(char **, sqlite3*, const char*, ...);
- //void sqlite3ErrorMsg(Parse*, const char*, ...);
- //int sqlite3Dequote(char*);
- //int sqlite3KeywordCode(const unsigned char*, int);
- //int sqlite3RunParser(Parse*, const char*, char **);
- //void sqlite3FinishCoding(Parse*);
- //int sqlite3GetTempReg(Parse*);
- //void sqlite3ReleaseTempReg(Parse*,int);
- //int sqlite3GetTempRange(Parse*,int);
- //void sqlite3ReleaseTempRange(Parse*,int,int);
- //Expr *sqlite3ExprAlloc(sqlite3*,int,const Token*,int);
- //Expr *sqlite3Expr(sqlite3*,int,const char*);
- //void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*);
- //Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*, const Token*);
- //Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*);
- //Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*);
- //void sqlite3ExprAssignVarNumber(Parse*, Expr*);
- //void sqlite3ExprDelete(sqlite3*, Expr*);
- //ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
- //void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
- //void sqlite3ExprListSetSpan(Parse*,ExprList*,ExprSpan*);
- //void sqlite3ExprListDelete(sqlite3*, 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*,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*,ExprSpan*);
- //void sqlite3AddCollateType(Parse*, Token*);
- //void sqlite3EndTable(Parse*,Token*,Token*,Select*);
- //Bitvec *sqlite3BitvecCreate(u32);
- //int sqlite3BitvecTest(Bitvec*, u32);
- //int sqlite3BitvecSet(Bitvec*, u32);
- //void sqlite3BitvecClear(Bitvec*, u32, void*);
- //void sqlite3BitvecDestroy(Bitvec*);
- //u32 sqlite3BitvecSize(Bitvec*);
- //int sqlite3BitvecBuiltinTest(int,int*);
- //RowSet *sqlite3RowSetInit(sqlite3*, void*, unsigned int);
- //void sqlite3RowSetClear(RowSet*);
- //void sqlite3RowSetInsert(RowSet*, i64);
- //int sqlite3RowSetTest(RowSet*, u8 iBatch, i64);
- //int sqlite3RowSetNext(RowSet*, i64*);
- //void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int,int);
- #if !SQLITE_OMIT_VIEW || !SQLITE_OMIT_VIRTUALTABLE
- //int sqlite3ViewGetColumnNames(Parse*,Table*);
- #else
- //# define sqlite3ViewGetColumnNames(A,B) 0
- static int sqlite3ViewGetColumnNames( Parse A, Table B )
- {
- return 0;
- }
- #endif
- //void sqlite3DropTable(Parse*, SrcList*, int, int);
- //void sqlite3DeleteTable(sqlite3*, Table*);
- //#if ! SQLITE_OMIT_AUTOINCREMENT
- // void sqlite3AutoincrementBegin(Parse *pParse);
- // void sqlite3AutoincrementEnd(Parse *pParse);
- //#else
- //# define sqlite3AutoincrementBegin(X)
- //# define sqlite3AutoincrementEnd(X)
- //#endif
- //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 *sqlite3SrcListEnlarge(sqlite3*, SrcList*, int, int);
- //SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*);
- //SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*,
- // Token*, Select*, Expr*, IdList*);
- //void sqlite3SrcListIndexedBy(Parse *, SrcList *, Token *);
- //int sqlite3IndexedByLookup(Parse *, struct SrcList_item *);
- //void sqlite3SrcListShiftJoinType(SrcList*);
- //void sqlite3SrcListAssignCursors(Parse*, SrcList*);
- //void sqlite3IdListDelete(sqlite3*, IdList*);
- //void sqlite3SrcListDelete(sqlite3*, SrcList*);
- //Index *sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
- // Token*, int, int);
- //void sqlite3DropIndex(Parse*, SrcList*, int);
- //int sqlite3Select(Parse*, Select*, SelectDest*);
- //Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*,
- // Expr*,ExprList*,int,Expr*,Expr*);
- //void sqlite3SelectDelete(sqlite3*, Select*);
- //Table *sqlite3SrcListLookup(Parse*, SrcList*);
- //int sqlite3IsReadOnly(Parse*, Table*, int);
- //void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int);
- #if (SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !(SQLITE_OMIT_SUBQUERY)
- //Expr *sqlite3LimitWhere(Parse *, SrcList *, Expr *, ExprList *, Expr *, Expr *, char *);
- #endif
- //void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
- //void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
- //WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**, u16);
- //void sqlite3WhereEnd(WhereInfo*);
- //int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int);
- //void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int);
- //void sqlite3ExprCodeMove(Parse*, int, int, int);
- //void sqlite3ExprCodeCopy(Parse*, int, int, int);
- //void sqlite3ExprCacheStore(Parse*, int, int, int);
- //void sqlite3ExprCachePush(Parse*);
- //void sqlite3ExprCachePop(Parse*, int);
- //void sqlite3ExprCacheRemove(Parse*, int, int);
- //void sqlite3ExprCacheClear(Parse*);
- //void sqlite3ExprCacheAffinityChange(Parse*, int, int);
- //int sqlite3ExprCode(Parse*, Expr*, int);
- //int sqlite3ExprCodeTemp(Parse*, Expr*, int*);
- //int sqlite3ExprCodeTarget(Parse*, Expr*, int);
- //int sqlite3ExprCodeAndCache(Parse*, Expr*, int);
- //void sqlite3ExprCodeConstants(Parse*, Expr*);
- //int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int);
- //void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
- //void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
- //Table *sqlite3FindTable(sqlite3*,const char*, const char*);
- //Table *sqlite3LocateTable(Parse*,int isView,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 sqlite3ExprListCompare(ExprList*, ExprList*);
- //void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
- //void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
- //Vdbe *sqlite3GetVdbe(Parse*);
- //void sqlite3PrngSaveState(void);
- //void sqlite3PrngRestoreState(void);
- //void sqlite3PrngResetState(void);
- //void sqlite3RollbackAll(sqlite3*);
- //void sqlite3CodeVerifySchema(Parse*, int);
- //void sqlite3BeginTransaction(Parse*, int);
- //void sqlite3CommitTransaction(Parse*);
- //void sqlite3RollbackTransaction(Parse*);
- //void sqlite3Savepoint(Parse*, int, Token*);
- //void sqlite3CloseSavepoints(sqlite3 *);
- //int sqlite3ExprIsConstant(Expr*);
- //int sqlite3ExprIsConstantNotJoin(Expr*);
- //int sqlite3ExprIsConstantOrFunction(Expr*);
- //int sqlite3ExprIsInteger(Expr*, int*);
- //int sqlite3ExprCanBeNull(const Expr*);
- //void sqlite3ExprCodeIsNullJump(Vdbe*, const Expr*, int, int);
- //int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
- //int sqlite3IsRowid(const char*);
- //void sqlite3GenerateRowDelete(Parse*, Table*, int, int, int, Trigger *, int);
- //void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int*);
- //int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int);
- //void sqlite3GenerateConstraintChecks(Parse*,Table*,int,int,
- // int*,int,int,int,int,int*);
- //void sqlite3CompleteInsertion(Parse*, Table*, int, int, int*, int, int, int);
- //int sqlite3OpenTableAndIndices(Parse*, Table*, int, int);
- //void sqlite3BeginWriteOperation(Parse*, int, int);
- //void sqlite3MultiWrite(Parse*);
- //void sqlite3MayAbort(Parse *);
- //void sqlite3HaltConstraint(Parse*, int, char*, int);
- //Expr *sqlite3ExprDup(sqlite3*,Expr*,int);
- //ExprList *sqlite3ExprListDup(sqlite3*,ExprList*,int);
- //SrcList *sqlite3SrcListDup(sqlite3*,SrcList*,int);
- //IdList *sqlite3IdListDup(sqlite3*,IdList*);
- //Select *sqlite3SelectDup(sqlite3*,Select*,int);
- //void sqlite3FuncDefInsert(FuncDefHash*, FuncDef*);
- //FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,int);
- //void sqlite3RegisterBuiltinFunctions(sqlite3*);
- //void sqlite3RegisterDateTimeFunctions(void);
- //void sqlite3RegisterGlobalFunctions(void);
- //int sqlite3SafetyCheckOk(sqlite3*);
- //int sqlite3SafetyCheckSickOrOk(sqlite3*);
- //void sqlite3ChangeCookie(Parse*, int);
- #if !(SQLITE_OMIT_VIEW) && !(SQLITE_OMIT_TRIGGER)
- //void sqlite3MaterializeView(Parse*, Table*, Expr*, int);
- #endif
- #if !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);
- //Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask);
- //Trigger *sqlite3TriggerList(Parse *, Table *);
- // void sqlite3CodeRowTrigger(Parse*, Trigger *, int, ExprList*, int, Table *,
- // int, int, int);
- //void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
- //void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*);
- //TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*);
- //TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*,
- // ExprList*,Select*,u8);
- //TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, u8);
- //TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*);
- //void sqlite3DeleteTrigger(sqlite3*, Trigger*);
- //void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
- // u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int);
- //# define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p))
- static Parse sqlite3ParseToplevel( Parse p )
- {
- return p.pToplevel != null ? p.pToplevel : p;
- }
- #else
- static void sqlite3BeginTrigger( Parse A, Token B, Token C, int D, int E, IdList F, SrcList G, Expr H, int I, int J )
- {
- }
- static void sqlite3FinishTrigger( Parse P, TriggerStep TS, Token T )
- {
- }
- static TriggerStep sqlite3TriggerSelectStep( sqlite3 A, Select B )
- {
- return null;
- }
- static TriggerStep sqlite3TriggerInsertStep( sqlite3 A, Token B, IdList C, ExprList D, Select E, u8 F )
- {
- return null;
- }
- static TriggerStep sqlite3TriggerInsertStep( sqlite3 A, Token B, IdList C, int D, Select E, u8 F )
- {
- return null;
- }
- static TriggerStep sqlite3TriggerInsertStep( sqlite3 A, Token B, IdList C, ExprList D, int E, u8 F )
- {
- return null;
- }
- static TriggerStep sqlite3TriggerUpdateStep( sqlite3 A, Token B, ExprList C, Expr D, u8 E )
- {
- return null;
- }
- static TriggerStep sqlite3TriggerDeleteStep( sqlite3 A, Token B, Expr C )
- {
- return null;
- }
- static u32 sqlite3TriggerColmask( Parse A, Trigger B, ExprList C, int D, int E, Table F, int G )
- {
- return 0;
- }
- //# define sqlite3TriggersExist(B,C,D,E,F) 0
- static Trigger sqlite3TriggersExist( Parse B, Table C, int D, ExprList E, ref int F )
- {
- return null;
- }
- //# define sqlite3DeleteTrigger(A,B)
- static void sqlite3DeleteTrigger( sqlite3 A, ref Trigger B )
- {
- }
- static void sqlite3DeleteTriggerStep( sqlite3 A, ref TriggerStep B )
- {
- }
- //# define sqlite3DropTriggerPtr(A,B)
- static void sqlite3DropTriggerPtr( Parse A, Trigger B )
- {
- }
- static void sqlite3DropTrigger( Parse A, SrcList B, int C )
- {
- }
- //# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
- static void sqlite3UnlinkAndDeleteTrigger( sqlite3 A, int B, string C )
- {
- }
- //# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I)
- static void sqlite3CodeRowTrigger( Parse A, Trigger B, int C, ExprList D, int E, Table F, int G, int H, int I )
- {
- }
- //# define sqlite3CodeRowTriggerDirect(A,B,C,D,E,F)
- static Trigger sqlite3TriggerList( Parse pParse, Table pTab )
- {
- return null;
- } //# define sqlite3TriggerList(X, Y) 0
- //# define sqlite3ParseToplevel(p) p
- static Parse sqlite3ParseToplevel( Parse p )
- {
- return p;
- }
- //# define sqlite3TriggerOldmask(A,B,C,D,E,F) 0
- static u32 sqlite3TriggerOldmask( Parse A, Trigger B, int C, ExprList D, Table E, int F )
- {
- return 0;
- }
- #endif
- //int sqlite3JoinType(Parse*, Token*, Token*, Token*);
- //void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
- //void sqlite3DeferForeignKey(Parse*, int);
- #if !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*);
- int sqlite3AuthReadCol(Parse*, const char *, const char *, int);
- #else
- //# define sqlite3AuthRead(a,b,c,d)
- static void sqlite3AuthRead( Parse a, Expr b, Schema c, SrcList d )
- {
- }
- //# define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK
- static int sqlite3AuthCheck( Parse a, int b, string c, byte[] d, byte[] e )
- {
- return SQLITE_OK;
- }
- //# define sqlite3AuthContextPush(a,b,c)
- static void sqlite3AuthContextPush( Parse a, AuthContext b, string c )
- {
- }
- //# define sqlite3AuthContextPop(a) ((void)(a))
- static Parse sqlite3AuthContextPop( Parse a )
- {
- return a;
- }
- #endif
- //void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
- //void sqlite3Detach(Parse*, Expr*);
- //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*);
- //sqlite3AtoF(const char *z, double*, int, u8)
- //int sqlite3GetInt32(const char *, int*);
- //int sqlite3Atoi(const char *);
- //int sqlite3Utf16ByteLen(const void pData, int nChar);
- //int sqlite3Utf8CharLen(const char pData, int nByte);
- //int sqlite3Utf8Read(const u8*, const u8**);
- /*
- ** Routines to read and write variable-length integers. These used to
- ** be defined locally, but now we use the varint routines in the util.c
- ** file. Code should use the MACRO forms below, as the Varint32 versions
- ** are coded to assume the single byte case is already handled (which
- ** the MACRO form does).
- */
- //int sqlite3PutVarint(unsigned char*, u64);
- //int putVarint32(unsigned char*, u32);
- //u8 sqlite3GetVarint(const unsigned char *, u64 *);
- //u8 sqlite3GetVarint32(const unsigned char *, u32 *);
- //int sqlite3VarintLen(u64 v);
- /*
- ** The header of a record consists of a sequence variable-length integers.
- ** These integers are almost always small and are encoded as a single byte.
- ** The following macros take advantage this fact to provide a fast encode
- ** and decode of the integers in a record header. It is faster for the common
- ** case where the integer is a single byte. It is a little slower when the
- ** integer is two or more bytes. But overall it is faster.
- **
- ** The following expressions are equivalent:
- **
- ** x = sqlite3GetVarint32( A, B );
- ** x = putVarint32( A, B );
- **
- ** x = getVarint32( A, B );
- ** x = putVarint32( A, B );
- **
- */
- //#define getVarint32(A,B) (u8)((*(A)<(u8)0x80) ? ((B) = (u32)*(A)),1 : sqlite3GetVarint32((A), (u32 *)&(B)))
- //#define putVarint32(A,B) (u8)(((u32)(B)<(u32)0x80) ? (*(A) = (unsigned char)(B)),1 : sqlite3PutVarint32((A), (B)))
- //#define getVarint sqlite3GetVarint
- //#define putVarint sqlite3PutVarint
- //const char *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*, int, u8);
- //void sqlite3Error(sqlite3*, int, const char*,...);
- //void *sqlite3HexToBlob(sqlite3*, const char *z, int n);
- //int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
- //const char *sqlite3ErrStr(int);
- //int sqlite3ReadSchema(Parse pParse);
- //CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
- //CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
- //CollSeq *sqlite3ExprCollSeq(Parse pParse, Expr pExpr);
- //Expr *sqlite3ExprSetColl(Expr*, CollSeq*);
- //Expr *sqlite3ExprSetCollByToken(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, u8);
- //#ifdef SQLITE_ENABLE_STAT2
- //char *sqlite3Utf8to16(sqlite3 *, u8, char *, int, int *);
- //#endif
- //int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
- //void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);
- //#if !SQLITE_AMALGAMATION
- //extern const unsigned char sqlite3OpcodeProperty[];
- //extern const unsigned char sqlite3UpperToLower[];
- //extern const unsigned char sqlite3CtypeMap[];
- //extern const Token sqlite3IntTokens[];
- //extern SQLITE_WSD struct Sqlite3Config sqlite3Config;
- //extern SQLITE_WSD FuncDefHash sqlite3GlobalFunctions;
- //#ifndef SQLITE_OMIT_WSD
- //extern int sqlite3PendingByte;
- //#endif
- //#endif
- //void sqlite3RootPageMoved(Db*, int, int);
- //void sqlite3Reindex(Parse*, Token*, Token*);
- //void sqlite3AlterFunctions(void);
- //void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
- //int sqlite3GetToken(const unsigned char *, int *);
- //void sqlite3NestedParse(Parse*, const char*, ...);
- //void sqlite3ExpirePreparedStatements(sqlite3*);
- //int sqlite3CodeSubselect(Parse *, Expr *, int, int);
- //void sqlite3SelectPrep(Parse*, Select*, NameContext*);
- //int sqlite3ResolveExprNames(NameContext*, Expr*);
- //void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*);
- //int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*);
- //void sqlite3ColumnDefault(Vdbe *, Table *, int, int);
- //void sqlite3AlterFinishAddColumn(Parse *, Token *);
- //void sqlite3AlterBeginAddColumn(Parse *, SrcList *);
- //CollSeq *sqlite3GetCollSeq(sqlite3*, u8, CollSeq *, const char*);
- //char sqlite3AffinityType(const char*);
- //void sqlite3Analyze(Parse*, Token*, Token*);
- //int sqlite3InvokeBusyHandler(BusyHandler*);
- //int sqlite3FindDb(sqlite3*, Token*);
- //int sqlite3FindDbName(sqlite3 *, const char *);
- //int sqlite3AnalysisLoad(sqlite3*,int iDB);
- //void sqlite3DeleteIndexSamples(sqlite3*,Index*);
- //void sqlite3DefaultRowEst(Index*);
- //void sqlite3RegisterLikeFunctions(sqlite3*, int);
- //int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
- //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*),
- // FuncDestructor *pDestructor
- //);
- //int sqlite3ApiExit(sqlite3 db, int);
- //int sqlite3OpenTempDatabase(Parse *);
- //void sqlite3StrAccumAppend(StrAccum*,const char*,int);
- //char *sqlite3StrAccumFinish(StrAccum*);
- //void sqlite3StrAccumReset(StrAccum*);
- //void sqlite3SelectDestInit(SelectDest*,int,int);
- //Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int);
- //void sqlite3BackupRestart(sqlite3_backup *);
- //void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *);
- /*
- ** The interface to the LEMON-generated parser
- */
- //void *sqlite3ParserAlloc(void*(*)(size_t));
- //void sqlite3ParserFree(void*, void(*)(void*));
- //void sqlite3Parser(void*, int, Token, Parse*);
- #if YYTRACKMAXSTACKDEPTH
- int sqlite3ParserStackPeak(void*);
- #endif
- //void sqlite3AutoLoadExtensions(sqlite3*);
- #if !SQLITE_OMIT_LOAD_EXTENSION
- //void sqlite3CloseExtensions(sqlite3*);
- #else
- //# define sqlite3CloseExtensions(X)
- #endif
- #if !SQLITE_OMIT_SHARED_CACHE
- //void sqlite3TableLock(Parse *, int, int, u8, const char *);
- #else
- //#define sqlite3TableLock(v,w,x,y,z)
- static void sqlite3TableLock( Parse p, int p1, int p2, u8 p3, byte[] p4 )
- {
- }
- static void sqlite3TableLock( Parse p, int p1, int p2, u8 p3, string p4 )
- {
- }
- #endif
- #if SQLITE_TEST
- ///int sqlite3Utf8To8(unsigned char*);
- #endif
- #if SQLITE_OMIT_VIRTUALTABLE
- //# define sqlite3VtabClear(D, Y)
- static void sqlite3VtabClear( sqlite3 db, Table Y )
- {
- }
- //# define sqlite3VtabSync(X,Y) SQLITE_OK
- static int sqlite3VtabSync( sqlite3 X, string Y )
- {
- return SQLITE_OK;
- }
- //# define sqlite3VtabRollback(X)
- static void sqlite3VtabRollback( sqlite3 X )
- {
- }
- //# define sqlite3VtabCommit(X)
- static void sqlite3VtabCommit( sqlite3 X )
- {
- }
- //# define sqlite3VtabInSync(db) 0
- //# define sqlite3VtabLock(X)
- static void sqlite3VtabLock( VTable X )
- {
- }
- //# define sqlite3VtabUnlock(X)
- static void sqlite3VtabUnlock( VTable X )
- {
- }
- //# define sqlite3VtabUnlockList(X)
- static void sqlite3VtabUnlockList( sqlite3 X )
- {
- }
- static void sqlite3VtabArgExtend( Parse P, Token T )
- {
- }//# define sqlite3VtabArgExtend(P, T)
- static void sqlite3VtabArgInit( Parse P )
- {
- }//# define sqlite3VtabArgInit(P)
- static void sqlite3VtabBeginParse( Parse P, Token T, Token T1, Token T2 )
- {
- }//# define sqlite3VtabBeginParse(P, T, T1, T2);
- static void sqlite3VtabFinishParse<T>( Parse P, T t )
- {
- }//# define sqlite3VtabFinishParse(P, T)
- static bool sqlite3VtabInSync( sqlite3 db )
- {
- return false;
- }
- static VTable sqlite3GetVTable( sqlite3 db, Table T )
- {
- return null;
- }
- #else
- //void sqlite3VtabClear(sqlite3 *db, Table*);
- //int sqlite3VtabSync(sqlite3 db, int rc);
- //int sqlite3VtabRollback(sqlite3 db);
- //int sqlite3VtabCommit(sqlite3 db);
- //void sqlite3VtabLock(VTable *);
- //void sqlite3VtabUnlock(VTable *);
- //void sqlite3VtabUnlockList(sqlite3*);
- //# define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0)
- static bool sqlite3VtabInSync( sqlite3 db ) { return ( db.nVTrans > 0 && db.aVTrans == 0 ); }
- #endif
- //void sqlite3VtabMakeWritable(Parse*,Table*);
- //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 *, VTable *);
- //FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*);
- //void sqlite3InvalidFunction(sqlite3_context*,int,sqlite3_value**);
- //int sqlite3VdbeParameterIndex(Vdbe*, const char*, int);
- //int sqlite3TransferBindings(sqlite3_stmt *, sqlite3_stmt *);
- //int sqlite3Reprepare(Vdbe*);
- //void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
- //CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
- //int sqlite3TempInMemory(const sqlite3*);
- //VTable *sqlite3GetVTable(sqlite3*, Table*);
- //const char *sqlite3JournalModename(int);
- //int sqlite3Checkpoint(sqlite3*, int);
- //int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int);
- /* Declarations for functions in fkey.c. All of these are replaced by
- ** no-op macros if OMIT_FOREIGN_KEY is defined. In this case no foreign
- ** key functionality is available. If OMIT_TRIGGER is defined but
- ** OMIT_FOREIGN_KEY is not, only some of the functions are no-oped. In
- ** this case foreign keys are parsed, but no other functionality is
- ** provided (enforcement of FK constraints requires the triggers sub-system).
- */
- #if !(SQLITE_OMIT_FOREIGN_KEY) && !(SQLITE_OMIT_TRIGGER)
- //void sqlite3FkCheck(Parse*, Table*, int, int);
- //void sqlite3FkDropTable(Parse*, SrcList *, Table*);
- //void sqlite3FkActions(Parse*, Table*, ExprList*, int);
- //int sqlite3FkRequired(Parse*, Table*, int*, int);
- //u32 sqlite3FkOldmask(Parse*, Table*);
- //FKey *sqlite3FkReferences(Table *);
- #else
- //#define sqlite3FkActions(a,b,c,d)
- static void sqlite3FkActions( Parse a, Table b, ExprList c, int d ) { }
- //#define sqlite3FkCheck(a,b,c,d)
- static void sqlite3FkCheck( Parse a, Table b, int c, int d ) { }
- //#define sqlite3FkDropTable(a,b,c)
- static void sqlite3FkDropTable( Parse a, SrcList b, Table c ) { }
- //#define sqlite3FkOldmask(a,b) 0
- static u32 sqlite3FkOldmask( Parse a, Table b ) { return 0; }
- //#define sqlite3FkRequired(a,b,c,d) 0
- static int sqlite3FkRequired( Parse a, Table b, int[] c, int d ) { return 0; }
- #endif
- #if !SQLITE_OMIT_FOREIGN_KEY
- //void sqlite3FkDelete(sqlite3 *, Table*);
- #else
- //#define sqlite3FkDelete(a, b)
- static void sqlite3FkDelete(sqlite3 a, Table b) {}
- #endif
- /*
- ** Available fault injectors. Should be numbered beginning with 0.
- */
- const int SQLITE_FAULTINJECTOR_MALLOC = 0;//#define SQLITE_FAULTINJECTOR_MALLOC 0
- const int SQLITE_FAULTINJECTOR_COUNT = 1;//#define SQLITE_FAULTINJECTOR_COUNT 1
- /*
- ** The interface to the code in fault.c used for identifying "benign"
- ** malloc failures. This is only present if SQLITE_OMIT_BUILTIN_TEST
- ** is not defined.
- */
- #if !SQLITE_OMIT_BUILTIN_TEST
- //void sqlite3BeginBenignMalloc(void);
- //void sqlite3EndBenignMalloc(void);
- #else
- //#define sqlite3BeginBenignMalloc()
- //#define sqlite3EndBenignMalloc()
- #endif
- const int IN_INDEX_ROWID = 1;//#define IN_INDEX_ROWID 1
- const int IN_INDEX_EPH = 2;//#define IN_INDEX_EPH 2
- const int IN_INDEX_INDEX = 3;//#define IN_INDEX_INDEX 3
- //int sqlite3FindInIndex(Parse *, Expr *, int*);
- #if 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)
- static int sqlite3JournalSize( sqlite3_vfs pVfs )
- {
- return pVfs.szOsFile;
- }
- #endif
- //void sqlite3MemJournalOpen(sqlite3_file *);
- //int sqlite3MemJournalSize(void);
- //int sqlite3IsMemJournal(sqlite3_file *);
- #if SQLITE_MAX_EXPR_DEPTH//>0
- // void sqlite3ExprSetHeight(Parse pParse, Expr p);
- // int sqlite3SelectExprHeight(Select *);
- //int sqlite3ExprCheckHeight(Parse*, int);
- #else
- //#define sqlite3ExprSetHeight(x,y)
- //#define sqlite3SelectExprHeight(x) 0
- //#define sqlite3ExprCheckHeight(x,y)
- #endif
- //u32 sqlite3Get4byte(const u8*);
- //void sqlite3sqlite3Put4byte(u8*, u32);
- #if SQLITE_ENABLE_UNLOCK_NOTIFY
- void sqlite3ConnectionBlocked(sqlite3 *, sqlite3 *);
- void sqlite3ConnectionUnlocked(sqlite3 *db);
- void sqlite3ConnectionClosed(sqlite3 *db);
- #else
- static void sqlite3ConnectionBlocked( sqlite3 x, sqlite3 y )
- {
- } //#define sqlite3ConnectionBlocked(x,y)
- static void sqlite3ConnectionUnlocked( sqlite3 x )
- {
- } //#define sqlite3ConnectionUnlocked(x)
- static void sqlite3ConnectionClosed( sqlite3 x )
- {
- } //#define sqlite3ConnectionClosed(x)
- #endif
- #if SQLITE_DEBUG
- // void sqlite3ParserTrace(FILE*, char *);
- #endif
- /*
- ** If the SQLITE_ENABLE IOTRACE exists then the global variable
- ** sqlite3IoTrace is a pointer to a printf-like routine used to
- ** print I/O tracing messages.
- */
- #if SQLITE_ENABLE_IOTRACE
- static bool SQLite3IoTrace = false;
- //#define IOTRACE(A) if( sqlite3IoTrace ){ sqlite3IoTrace A; }
- static void IOTRACE( string X, params object[] ap ) { if ( SQLite3IoTrace ) { printf( X, ap ); } }
- // void sqlite3VdbeIOTraceSql(Vdbe);
- //SQLITE_EXTERN void (*sqlite3IoTrace)(const char*,...);
- #else
- //#define IOTRACE(A)
- static void IOTRACE( string F, params object[] ap )
- {
- }
- //#define sqlite3VdbeIOTraceSql(X)
- static void sqlite3VdbeIOTraceSql( Vdbe X )
- {
- }
- #endif
- /*
- ** These routines are available for the mem2.c debugging memory allocator
- ** only. They are used to verify that different "types" of memory
- ** allocations are properly tracked by the system.
- **
- ** sqlite3MemdebugSetType() sets the "type" of an allocation to one of
- ** the MEMTYPE_* macros defined below. The type must be a bitmask with
- ** a single bit set.
- **
- ** sqlite3MemdebugHasType() returns true if any of the bits in its second
- ** argument match the type set by the previous sqlite3MemdebugSetType().
- ** sqlite3MemdebugHasType() is intended for use inside assert() statements.
- **
- ** sqlite3MemdebugNoType() returns true if none of the bits in its second
- ** argument match the type set by the previous sqlite3MemdebugSetType().
- **
- ** Perhaps the most important point is the difference between MEMTYPE_HEAP
- ** and MEMTYPE_LOOKASIDE. If an allocation is MEMTYPE_LOOKASIDE, that means
- ** it might have been allocated by lookaside, except the allocation was
- ** too large or lookaside was already full. It is important to verify
- ** that allocations that might have been satisfied by lookaside are not
- ** passed back to non-lookaside free() routines. Asserts such as the
- ** example above are placed on the non-lookaside free() routines to verify
- ** this constraint.
- **
- ** All of this is no-op for a production build. It only comes into
- ** play when the SQLITE_MEMDEBUG compile-time option is used.
- */
- #if SQLITE_MEMDEBUG
- // void sqlite3MemdebugSetType(void*,u8);
- // int sqlite3MemdebugHasType(void*,u8);
- // int sqlite3MemdebugNoType(void*,u8);
- #else
- //# define sqlite3MemdebugSetType(X,Y) /* no-op */
- static void sqlite3MemdebugSetType<T>( T X, int Y )
- {
- }
- //# define sqlite3MemdebugHasType(X,Y) 1
- static bool sqlite3MemdebugHasType<T>( T X, int Y )
- {
- return true;
- }
- //# define sqlite3MemdebugNoType(X,Y) 1
- static bool sqlite3MemdebugNoType<T>( T X, int Y )
- {
- return true;
- }
- #endif
- //#define MEMTYPE_HEAP 0x01 /* General heap allocations */
- //#define MEMTYPE_LOOKASIDE 0x02 /* Might have been lookaside memory */
- //#define MEMTYPE_SCRATCH 0x04 /* Scratch allocations */
- //#define MEMTYPE_PCACHE 0x08 /* Page cache allocations */
- //#define MEMTYPE_DB 0x10 /* Uses sqlite3DbMalloc, not sqlite_malloc */
- public const int MEMTYPE_HEAP = 0x01;
- public const int MEMTYPE_LOOKASIDE = 0x02;
- public const int MEMTYPE_SCRATCH = 0x04;
- public const int MEMTYPE_PCACHE = 0x08;
- public const int MEMTYPE_DB = 0x10;
- //#endif //* _SQLITEINT_H_ */
- }
- }