| Index: third_party/sqlite/sqlite-src-3070603/src/sqliteInt.h
|
| diff --git a/third_party/sqlite/sqlite-src-3070603/src/sqliteInt.h b/third_party/sqlite/sqlite-src-3070603/src/sqliteInt.h
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..ea0925e4175ebf9d818f43b3d47f69e27ee8eb63
|
| --- /dev/null
|
| +++ b/third_party/sqlite/sqlite-src-3070603/src/sqliteInt.h
|
| @@ -0,0 +1,3226 @@
|
| +/*
|
| +** 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.
|
| +**
|
| +*/
|
| +#ifndef _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.
|
| +*/
|
| +#ifndef 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
|
| +*/
|
| +#ifdef _HAVE_SQLITE_CONFIG_H
|
| +#include "config.h"
|
| +#endif
|
| +
|
| +#include "sqliteLimit.h"
|
| +
|
| +/* Disable nuisance warnings on Borland compilers */
|
| +#if defined(__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... */
|
| +#ifndef _GNU_SOURCE
|
| +# define _GNU_SOURCE
|
| +#endif
|
| +
|
| +/*
|
| +** Include standard header files as necessary
|
| +*/
|
| +#ifdef HAVE_STDINT_H
|
| +#include <stdint.h>
|
| +#endif
|
| +#ifdef 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
|
| +
|
| +/*
|
| +** 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 defined(__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 !defined(SQLITE_THREADSAFE)
|
| +#if defined(THREADSAFE)
|
| +# define SQLITE_THREADSAFE THREADSAFE
|
| +#else
|
| +# define SQLITE_THREADSAFE 1 /* IMP: R-07272-22309 */
|
| +#endif
|
| +#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 !defined(SQLITE_DEFAULT_MEMSTATUS)
|
| +# define 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 defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)>1
|
| +# error "At most one of the following compile-time configuration options\
|
| + is allows: SQLITE_SYSTEM_MALLOC, SQLITE_MEMDEBUG"
|
| +#endif
|
| +#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)==0
|
| +# 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 !defined(SQLITE_MALLOC_SOFT_LIMIT)
|
| +# define 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 !defined(_XOPEN_SOURCE) && !defined(__DARWIN__) && !defined(__APPLE__) && SQLITE_THREADSAFE
|
| +# define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */
|
| +#endif
|
| +
|
| +/*
|
| +** The TCL headers are only needed when compiling the TCL bindings.
|
| +*/
|
| +#if defined(SQLITE_TCL) || defined(TCLSH)
|
| +# include <tcl.h>
|
| +#endif
|
| +
|
| +/*
|
| +** Many people are failing to set -DNDEBUG=1 when compiling SQLite.
|
| +** Setting NDEBUG makes the code smaller and run faster. So the following
|
| +** lines are added to automatically set NDEBUG unless the -DSQLITE_DEBUG=1
|
| +** option is set. Thus NDEBUG becomes an opt-in rather than an opt-out
|
| +** feature.
|
| +*/
|
| +#if !defined(NDEBUG) && !defined(SQLITE_DEBUG)
|
| +# define NDEBUG 1
|
| +#endif
|
| +
|
| +/*
|
| +** 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.
|
| +**
|
| +*/
|
| +#ifdef SQLITE_COVERAGE_TEST
|
| + void sqlite3Coverage(int);
|
| +# define testcase(X) if( X ){ sqlite3Coverage(__LINE__); }
|
| +#else
|
| +# define testcase(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 !defined(NDEBUG) || defined(SQLITE_COVERAGE_TEST)
|
| +# define TESTONLY(X) X
|
| +#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.
|
| +*/
|
| +#ifndef 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 defined(SQLITE_COVERAGE_TEST)
|
| +# define ALWAYS(X) (1)
|
| +# define NEVER(X) (0)
|
| +#elif !defined(NDEBUG)
|
| +# define ALWAYS(X) ((X)?1:(assert(0),0))
|
| +# define NEVER(X) ((X)?(assert(0),1):0)
|
| +#else
|
| +# define ALWAYS(X) (X)
|
| +# define NEVER(X) (X)
|
| +#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.
|
| +*/
|
| +#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 defined(__GNUC__) && 0
|
| +# define likely(X) __builtin_expect((X),1)
|
| +# define unlikely(X) __builtin_expect((X),0)
|
| +#else
|
| +# define likely(X) !!(X)
|
| +# define unlikely(X) !!(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
|
| +*/
|
| +#ifdef SQLITE_OMIT_FLOATING_POINT
|
| +# define double sqlite_int64
|
| +# define float sqlite_int64
|
| +# define LONGDOUBLE_TYPE sqlite_int64
|
| +# ifndef 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
|
| +#ifndef SQLITE_BIG_DBL
|
| +# define SQLITE_BIG_DBL (1e99)
|
| +#endif
|
| +
|
| +/*
|
| +** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0
|
| +** afterward. Having this macro allows us to cause the C compiler
|
| +** to omit code used by TEMP tables without messy #ifndef statements.
|
| +*/
|
| +#ifdef SQLITE_OMIT_TEMPDB
|
| +#define OMIT_TEMPDB 1
|
| +#else
|
| +#define OMIT_TEMPDB 0
|
| +#endif
|
| +
|
| +/*
|
| +** The "file format" number is an integer that is incremented whenever
|
| +** the VDBE-level file format changes. The following macros define the
|
| +** the default file format for new databases and the maximum file format
|
| +** that the library can read.
|
| +*/
|
| +#define SQLITE_MAX_FILE_FORMAT 4
|
| +#ifndef SQLITE_DEFAULT_FILE_FORMAT
|
| +# define SQLITE_DEFAULT_FILE_FORMAT 1
|
| +#endif
|
| +
|
| +/*
|
| +** Determine whether triggers are recursive by default. This can be
|
| +** changed at run-time using a pragma.
|
| +*/
|
| +#ifndef SQLITE_DEFAULT_RECURSIVE_TRIGGERS
|
| +# define SQLITE_DEFAULT_RECURSIVE_TRIGGERS 0
|
| +#endif
|
| +
|
| +/*
|
| +** Provide a default value for SQLITE_TEMP_STORE in case it is not specified
|
| +** on the command-line
|
| +*/
|
| +#ifndef SQLITE_TEMP_STORE
|
| +# define SQLITE_TEMP_STORE 1
|
| +#endif
|
| +
|
| +/*
|
| +** GCC does not define the offsetof() macro so we'll have to do it
|
| +** ourselves.
|
| +*/
|
| +#ifndef offsetof
|
| +#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD))
|
| +#endif
|
| +
|
| +/*
|
| +** Check to see if this machine uses EBCDIC. (Yes, believe it or
|
| +** not, there are still machines out there that use EBCDIC.)
|
| +*/
|
| +#if 'A' == '\301'
|
| +# define SQLITE_EBCDIC 1
|
| +#else
|
| +# define SQLITE_ASCII 1
|
| +#endif
|
| +
|
| +/*
|
| +** Integers of known sizes. These typedefs might change for architectures
|
| +** where the sizes very. Preprocessor macros are available so that the
|
| +** types can be conveniently redefined at compile-type. Like this:
|
| +**
|
| +** cc '-DUINTPTR_TYPE=long long int' ...
|
| +*/
|
| +#ifndef UINT32_TYPE
|
| +# ifdef HAVE_UINT32_T
|
| +# define UINT32_TYPE uint32_t
|
| +# else
|
| +# define UINT32_TYPE unsigned int
|
| +# endif
|
| +#endif
|
| +#ifndef UINT16_TYPE
|
| +# ifdef HAVE_UINT16_T
|
| +# define UINT16_TYPE uint16_t
|
| +# else
|
| +# define UINT16_TYPE unsigned short int
|
| +# endif
|
| +#endif
|
| +#ifndef INT16_TYPE
|
| +# ifdef HAVE_INT16_T
|
| +# define INT16_TYPE int16_t
|
| +# else
|
| +# define INT16_TYPE short int
|
| +# endif
|
| +#endif
|
| +#ifndef UINT8_TYPE
|
| +# ifdef HAVE_UINT8_T
|
| +# define UINT8_TYPE uint8_t
|
| +# else
|
| +# define UINT8_TYPE unsigned char
|
| +# endif
|
| +#endif
|
| +#ifndef INT8_TYPE
|
| +# ifdef HAVE_INT8_T
|
| +# define INT8_TYPE int8_t
|
| +# else
|
| +# define INT8_TYPE signed char
|
| +# endif
|
| +#endif
|
| +#ifndef LONGDOUBLE_TYPE
|
| +# define LONGDOUBLE_TYPE long double
|
| +#endif
|
| +typedef sqlite_int64 i64; /* 8-byte signed integer */
|
| +typedef sqlite_uint64 u64; /* 8-byte unsigned integer */
|
| +typedef UINT32_TYPE u32; /* 4-byte unsigned integer */
|
| +typedef UINT16_TYPE u16; /* 2-byte unsigned integer */
|
| +typedef INT16_TYPE i16; /* 2-byte signed integer */
|
| +typedef UINT8_TYPE u8; /* 1-byte unsigned integer */
|
| +typedef 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)
|
| +
|
| +/*
|
| +** Macros to determine whether the machine is big or little endian,
|
| +** evaluated at runtime.
|
| +*/
|
| +#ifdef SQLITE_AMALGAMATION
|
| +const int sqlite3one = 1;
|
| +#else
|
| +extern const int sqlite3one;
|
| +#endif
|
| +#if defined(i386) || defined(__i386__) || defined(_M_IX86)\
|
| + || defined(__x86_64) || defined(__x86_64__)
|
| +# define SQLITE_BIGENDIAN 0
|
| +# define SQLITE_LITTLEENDIAN 1
|
| +# define SQLITE_UTF16NATIVE SQLITE_UTF16LE
|
| +#else
|
| +# define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0)
|
| +# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
|
| +# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)
|
| +#endif
|
| +
|
| +/*
|
| +** 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)
|
| +
|
| +/*
|
| +** 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)
|
| +
|
| +/*
|
| +** Round down to the nearest multiple of 8
|
| +*/
|
| +#define ROUNDDOWN8(x) ((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;
|
| +struct BusyHandler {
|
| + int (*xFunc)(void *,int); /* The busy callback */
|
| + void *pArg; /* First arg to busy callback */
|
| + 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.
|
| +*/
|
| +#define MASTER_NAME "sqlite_master"
|
| +#define TEMP_MASTER_NAME "sqlite_temp_master"
|
| +
|
| +/*
|
| +** The root-page of the master database table.
|
| +*/
|
| +#define MASTER_ROOT 1
|
| +
|
| +/*
|
| +** The name of the schema table.
|
| +*/
|
| +#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME)
|
| +
|
| +/*
|
| +** A convenience macro that returns the number of elements in
|
| +** an array.
|
| +*/
|
| +#define ArraySize(X) ((int)(sizeof(X)/sizeof(X[0])))
|
| +
|
| +/*
|
| +** 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)
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +#ifdef 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
|
| +#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)
|
| +#define UNUSED_PARAMETER2(x,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 FuncDefHash FuncDefHash;
|
| +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.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.
|
| +*/
|
| +struct Db {
|
| + char *zName; /* Name of this database */
|
| + Btree *pBt; /* The B*Tree structure for this database file */
|
| + u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */
|
| + u8 safety_level; /* How aggressive at syncing data to disk */
|
| + Schema *pSchema; /* Pointer to database schema (possibly shared) */
|
| +};
|
| +
|
| +/*
|
| +** An instance of the following structure stores a database schema.
|
| +**
|
| +** Most Schema objects are associated with a Btree. The exception is
|
| +** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing.
|
| +** In shared cache mode, a single Schema object can be shared by multiple
|
| +** Btrees that refer to the same underlying BtShared object.
|
| +**
|
| +** Schema objects are automatically deallocated when the last Btree that
|
| +** references them is destroyed. The TEMP Schema is manually freed by
|
| +** sqlite3_close().
|
| +*
|
| +** A thread must be holding a mutex on the corresponding Btree in order
|
| +** to access Schema content. This implies that the thread must also be
|
| +** holding a mutex on the sqlite3 connection pointer that owns the Btree.
|
| +** For a TEMP Schema, on the connection mutex is required.
|
| +*/
|
| +struct Schema {
|
| + int schema_cookie; /* Database schema version number for this file */
|
| + int iGeneration; /* Generation counter. Incremented with each change */
|
| + Hash tblHash; /* All tables indexed by name */
|
| + Hash idxHash; /* All (named) indices indexed by name */
|
| + Hash trigHash; /* All triggers indexed by name */
|
| + Hash fkeyHash; /* All foreign keys by referenced table name */
|
| + Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */
|
| + u8 file_format; /* Schema format version for this file */
|
| + u8 enc; /* Text encoding used by this database */
|
| + u16 flags; /* Flags associated with this schema */
|
| + int cache_size; /* Number of pages to use in the cache */
|
| +};
|
| +
|
| +/*
|
| +** 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))
|
| +#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))!=0)
|
| +#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->flags|=(P)
|
| +#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P)
|
| +
|
| +/*
|
| +** Allowed values for the DB.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) */
|
| +
|
| +/*
|
| +** 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)
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +struct Lookaside {
|
| + u16 sz; /* Size of each buffer in bytes */
|
| + u8 bEnabled; /* False to disable new lookaside allocations */
|
| + u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */
|
| + int nOut; /* Number of buffers currently checked out */
|
| + int mxOut; /* Highwater mark for nOut */
|
| + int anStat[3]; /* 0: hits. 1: size misses. 2: full misses */
|
| + LookasideSlot *pFree; /* List of available buffers */
|
| + void *pStart; /* First byte of available memory space */
|
| + void *pEnd; /* First byte past end of available space */
|
| +};
|
| +struct LookasideSlot {
|
| + 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.
|
| +*/
|
| +struct FuncDefHash {
|
| + FuncDef *a[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.
|
| +*/
|
| +struct sqlite3 {
|
| + sqlite3_vfs *pVfs; /* OS Interface */
|
| + int nDb; /* Number of backends currently in use */
|
| + Db *aDb; /* All backends */
|
| + int flags; /* Miscellaneous flags. See below */
|
| + int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
|
| + int errCode; /* Most recent error code (SQLITE_*) */
|
| + int errMask; /* & result codes with this before returning */
|
| + u8 autoCommit; /* The auto-commit flag. */
|
| + u8 temp_store; /* 1: file 2: memory 0: default */
|
| + u8 mallocFailed; /* True if we have seen a malloc failure */
|
| + u8 dfltLockMode; /* Default locking-mode for attached dbs */
|
| + signed char nextAutovac; /* Autovac setting after VACUUM if >=0 */
|
| + u8 suppressErr; /* Do not issue error messages if true */
|
| + int nextPagesize; /* Pagesize after VACUUM if >0 */
|
| + int nTable; /* Number of tables in the database */
|
| + CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
|
| + i64 lastRowid; /* ROWID of most recent insert (see above) */
|
| + u32 magic; /* Magic number for detect library misuse */
|
| + int nChange; /* Value returned by sqlite3_changes() */
|
| + int nTotalChange; /* Value returned by sqlite3_total_changes() */
|
| + sqlite3_mutex *mutex; /* Connection mutex */
|
| + int aLimit[SQLITE_N_LIMIT]; /* Limits */
|
| + struct sqlite3InitInfo { /* Information used during initialization */
|
| + int iDb; /* When back is being initialized */
|
| + int newTnum; /* Rootpage of table being initialized */
|
| + u8 busy; /* TRUE if currently initializing */
|
| + u8 orphanTrigger; /* Last statement is orphaned TEMP trigger */
|
| + } init;
|
| + int nExtension; /* Number of loaded extensions */
|
| + void **aExtension; /* Array of shared library handles */
|
| + struct Vdbe *pVdbe; /* List of active virtual machines */
|
| + int activeVdbeCnt; /* Number of VDBEs currently executing */
|
| + int writeVdbeCnt; /* Number of active VDBEs that are writing */
|
| + int vdbeExecCnt; /* Number of nested calls to VdbeExec() */
|
| + void (*xTrace)(void*,const char*); /* Trace function */
|
| + void *pTraceArg; /* Argument to the trace function */
|
| + void (*xProfile)(void*,const char*,u64); /* Profiling function */
|
| + void *pProfileArg; /* Argument to profile function */
|
| + void *pCommitArg; /* Argument to xCommitCallback() */
|
| + int (*xCommitCallback)(void*); /* Invoked at every commit. */
|
| + void *pRollbackArg; /* Argument to xRollbackCallback() */
|
| + void (*xRollbackCallback)(void*); /* Invoked at every commit. */
|
| + void *pUpdateArg;
|
| + void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64);
|
| +#ifndef SQLITE_OMIT_WAL
|
| + int (*xWalCallback)(void *, sqlite3 *, const char *, int);
|
| + void *pWalArg;
|
| +#endif
|
| + void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*);
|
| + void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*);
|
| + void *pCollNeededArg;
|
| + sqlite3_value *pErr; /* Most recent error message */
|
| + char *zErrMsg; /* Most recent error message (UTF-8 encoded) */
|
| + char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */
|
| + union {
|
| + volatile int isInterrupted; /* True if sqlite3_interrupt has been called */
|
| + double notUsed1; /* Spacer */
|
| + } u1;
|
| + Lookaside lookaside; /* Lookaside malloc configuration */
|
| +#ifndef SQLITE_OMIT_AUTHORIZATION
|
| + int (*xAuth)(void*,int,const char*,const char*,const char*,const char*);
|
| + /* Access authorization function */
|
| + void *pAuthArg; /* 1st argument to the access auth function */
|
| +#endif
|
| +#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
|
| + int (*xProgress)(void *); /* The progress callback */
|
| + void *pProgressArg; /* Argument to the progress callback */
|
| + int nProgressOps; /* Number of opcodes for progress callback */
|
| +#endif
|
| +#ifndef SQLITE_OMIT_VIRTUALTABLE
|
| + Hash aModule; /* populated by sqlite3_create_module() */
|
| + Table *pVTab; /* vtab with active Connect/Create method */
|
| + VTable **aVTrans; /* Virtual tables with open transactions */
|
| + int nVTrans; /* Allocated size of aVTrans */
|
| + VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */
|
| +#endif
|
| + FuncDefHash aFunc; /* Hash table of connection functions */
|
| + Hash aCollSeq; /* All collating sequences */
|
| + BusyHandler busyHandler; /* Busy callback */
|
| + int busyTimeout; /* Busy handler timeout, in msec */
|
| + Db aDbStatic[2]; /* Static space for the 2 default backends */
|
| + Savepoint *pSavepoint; /* List of active savepoints */
|
| + int nSavepoint; /* Number of non-transaction savepoints */
|
| + int nStatement; /* Number of nested statement-transactions */
|
| + u8 isTransactionSavepoint; /* True if the outermost savepoint is a TS */
|
| + i64 nDeferredCons; /* Net deferred constraints this transaction. */
|
| + int *pnBytesFreed; /* If not NULL, increment this in DbFree() */
|
| +
|
| +#ifdef 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)
|
| +
|
| +/*
|
| +** 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 */
|
| +#define SQLITE_EnableTrigger 0x40000000 /* True to enable triggers */
|
| +
|
| +/*
|
| +** 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 */
|
| +
|
| +/*
|
| +** Possible values for the sqlite.magic field.
|
| +** The numbers are obtained at random and have no special meaning, other
|
| +** than being distinct from one another.
|
| +*/
|
| +#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */
|
| +#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */
|
| +#define SQLITE_MAGIC_SICK 0x4b771290 /* Error and awaiting close */
|
| +#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */
|
| +#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */
|
| +
|
| +/*
|
| +** Each SQL function is defined by an instance of the following
|
| +** structure. A pointer to this structure is stored in the sqlite.aFunc
|
| +** hash table. When multiple functions have the same name, the hash table
|
| +** points to a linked list of these structures.
|
| +*/
|
| +struct FuncDef {
|
| + i16 nArg; /* Number of arguments. -1 means unlimited */
|
| + u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */
|
| + u8 flags; /* Some combination of SQLITE_FUNC_* */
|
| + void *pUserData; /* User data parameter */
|
| + FuncDef *pNext; /* Next function with same name */
|
| + void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */
|
| + void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
|
| + void (*xFinalize)(sqlite3_context*); /* Aggregate finalizer */
|
| + char *zName; /* SQL name of the function. */
|
| + FuncDef *pHash; /* Next with a different name but the same hash */
|
| + FuncDestructor *pDestructor; /* Reference counted destructor function */
|
| +};
|
| +
|
| +/*
|
| +** 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;
|
| +};
|
| +
|
| +/*
|
| +** 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 */
|
| +
|
| +/*
|
| +** 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}
|
| +#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}
|
| +#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}
|
| +
|
| +/*
|
| +** 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) */
|
| +};
|
| +
|
| +/*
|
| +** The following are used as the second parameter to sqlite3Savepoint(),
|
| +** and as the P1 argument to the OP_Savepoint instruction.
|
| +*/
|
| +#define SAVEPOINT_BEGIN 0
|
| +#define SAVEPOINT_RELEASE 1
|
| +#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.
|
| +*/
|
| +struct Module {
|
| + const sqlite3_module *pModule; /* Callback pointers */
|
| + const char *zName; /* Name passed to create_module() */
|
| + void *pAux; /* pAux passed to create_module() */
|
| + void (*xDestroy)(void *); /* Module destructor function */
|
| +};
|
| +
|
| +/*
|
| +** information about each column of an SQL table is held in an instance
|
| +** of this structure.
|
| +*/
|
| +struct Column {
|
| + char *zName; /* Name of this column */
|
| + Expr *pDflt; /* Default value of this column */
|
| + char *zDflt; /* Original text of the default value */
|
| + char *zType; /* Data type for this column */
|
| + char *zColl; /* Collating sequence. If NULL, use the default */
|
| + u8 notNull; /* True if there is a NOT NULL constraint */
|
| + u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */
|
| + char affinity; /* One of the SQLITE_AFF_... values */
|
| +#ifndef SQLITE_OMIT_VIRTUALTABLE
|
| + u8 isHidden; /* True if this column is 'hidden' */
|
| +#endif
|
| +};
|
| +
|
| +/*
|
| +** A "Collating Sequence" is defined by an instance of the following
|
| +** structure. Conceptually, a collating sequence consists of a name and
|
| +** a comparison routine that defines the order of that sequence.
|
| +**
|
| +** There may two 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.
|
| +*/
|
| +struct CollSeq {
|
| + char *zName; /* Name of the collating sequence, UTF-8 encoded */
|
| + u8 enc; /* Text encoding handled by xCmp() */
|
| + u8 type; /* One of the SQLITE_COLL_... values below */
|
| + void *pUser; /* First argument to xCmp() */
|
| + int (*xCmp)(void*,int, const void*, int, const void*);
|
| + void (*xDel)(void*); /* Destructor for pUser */
|
| +};
|
| +
|
| +/*
|
| +** Allowed values of CollSeq.type:
|
| +*/
|
| +#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
|
| +#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
|
| +#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
|
| +#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
|
| +
|
| +/*
|
| +** A sort order can be either ASC or DESC.
|
| +*/
|
| +#define SQLITE_SO_ASC 0 /* Sort in ascending order */
|
| +#define SQLITE_SO_DESC 1 /* Sort in ascending order */
|
| +
|
| +/*
|
| +** Column affinity types.
|
| +**
|
| +** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and
|
| +** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve
|
| +** the speed a little by 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.
|
| +*/
|
| +#define SQLITE_AFF_TEXT 'a'
|
| +#define SQLITE_AFF_NONE 'b'
|
| +#define SQLITE_AFF_NUMERIC 'c'
|
| +#define SQLITE_AFF_INTEGER 'd'
|
| +#define SQLITE_AFF_REAL 'e'
|
| +
|
| +#define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC)
|
| +
|
| +/*
|
| +** The SQLITE_AFF_MASK values masks off the significant bits of an
|
| +** affinity value.
|
| +*/
|
| +#define SQLITE_AFF_MASK 0x67
|
| +
|
| +/*
|
| +** Additional bit values that can be ORed with an affinity without
|
| +** changing the affinity.
|
| +*/
|
| +#define SQLITE_JUMPIFNULL 0x08 /* jumps if either operand is NULL */
|
| +#define SQLITE_STOREP2 0x10 /* Store result in reg[P2] rather than jump */
|
| +#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 be 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.
|
| +*/
|
| +struct VTable {
|
| + sqlite3 *db; /* Database connection associated with this table */
|
| + Module *pMod; /* Pointer to module implementation */
|
| + sqlite3_vtab *pVtab; /* Pointer to vtab instance */
|
| + int nRef; /* Number of pointers to this structure */
|
| + 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.
|
| +*/
|
| +struct Table {
|
| + char *zName; /* Name of the table or view */
|
| + int iPKey; /* If not negative, use aCol[iPKey] as the primary key */
|
| + int nCol; /* Number of columns in this table */
|
| + Column *aCol; /* Information about each column */
|
| + Index *pIndex; /* List of SQL indexes on this table. */
|
| + int tnum; /* Root BTree node for this table (see note above) */
|
| + unsigned nRowEst; /* Estimated rows in table - from sqlite_stat1 table */
|
| + Select *pSelect; /* NULL for tables. Points to definition if a view. */
|
| + u16 nRef; /* Number of pointers to this Table */
|
| + u8 tabFlags; /* Mask of TF_* values */
|
| + u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */
|
| + FKey *pFKey; /* Linked list of all foreign keys in this table */
|
| + char *zColAff; /* String defining the affinity of each column */
|
| +#ifndef SQLITE_OMIT_CHECK
|
| + Expr *pCheck; /* The AND of all CHECK constraints */
|
| +#endif
|
| +#ifndef SQLITE_OMIT_ALTERTABLE
|
| + int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */
|
| +#endif
|
| +#ifndef SQLITE_OMIT_VIRTUALTABLE
|
| + VTable *pVTable; /* List of VTable objects. */
|
| + int nModuleArg; /* Number of arguments to the module */
|
| + char **azModuleArg; /* Text of all module args. [0] is module name */
|
| +#endif
|
| + Trigger *pTrigger; /* List of triggers stored in pSchema */
|
| + Schema *pSchema; /* Schema that contains this table */
|
| + Table *pNextZombie; /* Next on the Parse.pZombieTab list */
|
| +};
|
| +
|
| +/*
|
| +** 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 */
|
| +
|
| +
|
| +
|
| +/*
|
| +** Test to see whether or not a table is a virtual table. This is
|
| +** done as a macro so that it will be optimized out when virtual
|
| +** table support is omitted from the build.
|
| +*/
|
| +#ifndef SQLITE_OMIT_VIRTUALTABLE
|
| +# define IsVirtual(X) (((X)->tabFlags & TF_Virtual)!=0)
|
| +# define IsHiddenColumn(X) ((X)->isHidden)
|
| +#else
|
| +# define IsVirtual(X) 0
|
| +# define IsHiddenColumn(X) 0
|
| +#endif
|
| +
|
| +/*
|
| +** Each foreign key constraint is an instance of the following structure.
|
| +**
|
| +** A foreign key is associated with two tables. The "from" table is
|
| +** the table that contains the REFERENCES clause that creates the foreign
|
| +** key. The "to" table is the table that is named in the REFERENCES clause.
|
| +** Consider this example:
|
| +**
|
| +** CREATE TABLE ex1(
|
| +** a INTEGER PRIMARY KEY,
|
| +** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x)
|
| +** );
|
| +**
|
| +** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2".
|
| +**
|
| +** Each REFERENCES clause generates an instance of the following structure
|
| +** which is attached to the from-table. The to-table need not exist when
|
| +** the from-table is created. The existence of the to-table is not checked.
|
| +*/
|
| +struct FKey {
|
| + Table *pFrom; /* Table containing the REFERENCES clause (aka: Child) */
|
| + FKey *pNextFrom; /* Next foreign key in pFrom */
|
| + char *zTo; /* Name of table that the key points to (aka: Parent) */
|
| + FKey *pNextTo; /* Next foreign key on table named zTo */
|
| + FKey *pPrevTo; /* Previous foreign key on table named zTo */
|
| + int nCol; /* Number of columns in this key */
|
| + /* EV: R-30323-21917 */
|
| + u8 isDeferred; /* True if constraint checking is deferred till COMMIT */
|
| + u8 aAction[2]; /* ON DELETE and ON UPDATE actions, respectively */
|
| + Trigger *apTrigger[2]; /* Triggers for aAction[] actions */
|
| + struct sColMap { /* Mapping of columns in pFrom to columns in zTo */
|
| + int iFrom; /* Index of column in pFrom */
|
| + char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */
|
| + } aCol[1]; /* One entry for each of nCol column s */
|
| +};
|
| +
|
| +/*
|
| +** SQLite supports many different ways to resolve a constraint
|
| +** error. ROLLBACK processing means that a constraint violation
|
| +** causes the operation in process to fail and for the current transaction
|
| +** to be rolled back. ABORT processing means the operation in process
|
| +** fails and any prior changes from that one operation are backed out,
|
| +** but the transaction is not rolled back. FAIL processing means that
|
| +** the operation in progress stops and returns an error code. But prior
|
| +** changes due to the same operation are not backed out and no rollback
|
| +** occurs. IGNORE means that the particular row that caused the constraint
|
| +** error is not inserted or updated. Processing continues and no error
|
| +** is returned. REPLACE means that preexisting database rows that caused
|
| +** a UNIQUE constraint violation are removed so that the new insert or
|
| +** update can proceed. Processing continues and no error is reported.
|
| +**
|
| +** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys.
|
| +** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the
|
| +** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign
|
| +** key is set to NULL. CASCADE means that a DELETE or UPDATE of the
|
| +** referenced table row is propagated into the row that holds the
|
| +** foreign key.
|
| +**
|
| +** The following symbolic values are used to record which type
|
| +** of action to take.
|
| +*/
|
| +#define OE_None 0 /* There is no constraint to check */
|
| +#define OE_Rollback 1 /* Fail the operation and rollback the transaction */
|
| +#define OE_Abort 2 /* Back out changes but do no rollback transaction */
|
| +#define OE_Fail 3 /* Stop the operation but leave all prior changes */
|
| +#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */
|
| +#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */
|
| +
|
| +#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */
|
| +#define OE_SetNull 7 /* Set the foreign key value to NULL */
|
| +#define OE_SetDflt 8 /* Set the foreign key value to its default */
|
| +#define OE_Cascade 9 /* Cascade the changes */
|
| +
|
| +#define OE_Default 99 /* Do whatever the default action is */
|
| +
|
| +
|
| +/*
|
| +** An instance of the following structure is passed as the first
|
| +** argument to sqlite3VdbeKeyCompare and is used to control the
|
| +** comparison of the two index keys.
|
| +*/
|
| +struct KeyInfo {
|
| + sqlite3 *db; /* The database connection */
|
| + u8 enc; /* Text encoding - one of the SQLITE_UTF* values */
|
| + u16 nField; /* Number of entries in aColl[] */
|
| + u8 *aSortOrder; /* Sort order for each column. May be NULL */
|
| + CollSeq *aColl[1]; /* Collating sequence for each term of the key */
|
| +};
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +struct UnpackedRecord {
|
| + KeyInfo *pKeyInfo; /* Collation and sort-order information */
|
| + u16 nField; /* Number of entries in apMem[] */
|
| + u16 flags; /* Boolean settings. UNPACKED_... below */
|
| + i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */
|
| + 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 */
|
| +
|
| +/*
|
| +** Each SQL index is represented in memory by an
|
| +** instance of the following structure.
|
| +**
|
| +** The columns of the table that are to be indexed are described
|
| +** by the aiColumn[] field of this structure. For example, suppose
|
| +** we have the following table and index:
|
| +**
|
| +** CREATE TABLE Ex1(c1 int, c2 int, c3 text);
|
| +** CREATE INDEX Ex2 ON Ex1(c3,c1);
|
| +**
|
| +** In the Table structure describing Ex1, nCol==3 because there are
|
| +** three columns in the table. In the Index structure describing
|
| +** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed.
|
| +** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the
|
| +** first column to be indexed (c3) has an index of 2 in Ex1.aCol[].
|
| +** The second column to be indexed (c1) has an index of 0 in
|
| +** Ex1.aCol[], hence Ex2.aiColumn[1]==0.
|
| +**
|
| +** The Index.onError field determines whether or not the indexed columns
|
| +** must be unique and what to do if they are not. When Index.onError=OE_None,
|
| +** it means this is not a unique index. Otherwise it is a unique index
|
| +** and the value of Index.onError indicate the which conflict resolution
|
| +** algorithm to employ whenever an attempt is made to insert a non-unique
|
| +** element.
|
| +*/
|
| +struct Index {
|
| + char *zName; /* Name of this index */
|
| + int nColumn; /* Number of columns in the table used by this index */
|
| + int *aiColumn; /* Which columns are used by this index. 1st is 0 */
|
| + unsigned *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
|
| + Table *pTable; /* The SQL table being indexed */
|
| + int tnum; /* Page containing root of this index in database file */
|
| + u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
|
| + u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
|
| + u8 bUnordered; /* Use this index for == or IN queries only */
|
| + char *zColAff; /* String defining the affinity of each column */
|
| + Index *pNext; /* The next index associated with the same table */
|
| + Schema *pSchema; /* Schema containing this index */
|
| + u8 *aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */
|
| + char **azColl; /* Array of collation sequence names for index */
|
| + IndexSample *aSample; /* Array of SQLITE_INDEX_SAMPLES samples */
|
| +};
|
| +
|
| +/*
|
| +** Each sample stored in the sqlite_stat2 table is represented in memory
|
| +** using a structure of this type.
|
| +*/
|
| +struct IndexSample {
|
| + union {
|
| + char *z; /* Value if eType is SQLITE_TEXT or SQLITE_BLOB */
|
| + double r; /* Value if eType is SQLITE_FLOAT or SQLITE_INTEGER */
|
| + } u;
|
| + u8 eType; /* SQLITE_NULL, SQLITE_INTEGER ... etc. */
|
| + 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.
|
| +*/
|
| +struct Token {
|
| + const char *z; /* Text of the token. Not NULL-terminated! */
|
| + unsigned int n; /* Number of characters in this token */
|
| +};
|
| +
|
| +/*
|
| +** An instance of this structure contains information needed to generate
|
| +** code for a SELECT that contains aggregate functions.
|
| +**
|
| +** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a
|
| +** pointer to this structure. The Expr.iColumn field is the index in
|
| +** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate
|
| +** code for that node.
|
| +**
|
| +** AggInfo.pGroupBy and AggInfo.aFunc.pExpr point to fields within the
|
| +** original Select structure that describes the SELECT statement. These
|
| +** fields do not need to be freed when deallocating the AggInfo structure.
|
| +*/
|
| +struct AggInfo {
|
| + u8 directMode; /* Direct rendering mode means take data directly
|
| + ** from source tables rather than from accumulators */
|
| + u8 useSortingIdx; /* In direct mode, reference the sorting index rather
|
| + ** than the source table */
|
| + int sortingIdx; /* Cursor number of the sorting index */
|
| + ExprList *pGroupBy; /* The group by clause */
|
| + int nSortingColumn; /* Number of columns in the sorting index */
|
| + struct AggInfo_col { /* For each column used in source tables */
|
| + Table *pTab; /* Source table */
|
| + int iTable; /* Cursor number of the source table */
|
| + int iColumn; /* Column number within the source table */
|
| + int iSorterColumn; /* Column number in the sorting index */
|
| + int iMem; /* Memory location that acts as accumulator */
|
| + Expr *pExpr; /* The original expression */
|
| + } *aCol;
|
| + int nColumn; /* Number of used entries in aCol[] */
|
| + int nColumnAlloc; /* Number of slots allocated for aCol[] */
|
| + int nAccumulator; /* Number of columns that show through to the output.
|
| + ** Additional columns are used only as parameters to
|
| + ** aggregate functions */
|
| + struct AggInfo_func { /* For each aggregate function */
|
| + Expr *pExpr; /* Expression encoding the function */
|
| + FuncDef *pFunc; /* The aggregate function implementation */
|
| + int iMem; /* Memory location that acts as accumulator */
|
| + int iDistinct; /* Ephemeral table used to enforce DISTINCT */
|
| + } *aFunc;
|
| + int nFunc; /* Number of entries in aFunc[] */
|
| + int nFuncAlloc; /* Number of slots allocated for aFunc[] */
|
| +};
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +struct Expr {
|
| + u8 op; /* Operation performed by this node */
|
| + char affinity; /* The affinity of the column or 0 if not a column */
|
| + u16 flags; /* Various flags. EP_* See below */
|
| + union {
|
| + char *zToken; /* Token value. Zero terminated and dequoted */
|
| + int iValue; /* Non-negative integer value if EP_IntValue */
|
| + } 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.
|
| + *********************************************************************/
|
| +
|
| + Expr *pLeft; /* Left subnode */
|
| + Expr *pRight; /* Right subnode */
|
| + union {
|
| + ExprList *pList; /* Function arguments or in "<expr> IN (<expr-list)" */
|
| + Select *pSelect; /* Used for sub-selects and "<expr> IN (<select>)" */
|
| + } x;
|
| + 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.
|
| + *********************************************************************/
|
| +
|
| + int iTable; /* TK_COLUMN: cursor number of table holding column
|
| + ** TK_REGISTER: register number
|
| + ** TK_TRIGGER: 1 -> new, 0 -> old */
|
| + ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid.
|
| + ** TK_VARIABLE: variable number (always >= 1). */
|
| + i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
|
| + i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */
|
| + u8 flags2; /* Second set of flags. EP2_... */
|
| + u8 op2; /* If a TK_REGISTER, the original value of Expr.op */
|
| + AggInfo *pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
|
| + Table *pTab; /* Table for TK_COLUMN expressions. */
|
| +#if SQLITE_MAX_EXPR_DEPTH>0
|
| + int nHeight; /* Height of the tree headed by this node */
|
| +#endif
|
| +};
|
| +
|
| +/*
|
| +** The following are the meanings of bits in the Expr.flags field.
|
| +*/
|
| +#define EP_FromJoin 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() */
|
| +
|
| +/*
|
| +** 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 */
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +#ifdef SQLITE_DEBUG
|
| +# define ExprSetIrreducible(X) (X)->flags2 |= EP2_Irreducible
|
| +#else
|
| +# define ExprSetIrreducible(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))
|
| +#define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0)
|
| +#define ExprSetProperty(E,P) (E)->flags|=(P)
|
| +#define ExprClearProperty(E,P) (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 */
|
| +
|
| +/*
|
| +** Flags passed to the sqlite3ExprDup() function. See the header comment
|
| +** above sqlite3ExprDup() for details.
|
| +*/
|
| +#define EXPRDUP_REDUCE 0x0001 /* Used reduced-size Expr nodes */
|
| +
|
| +/*
|
| +** A list of expressions. Each expression may optionally have a
|
| +** name. An expr/name combination can be used in several ways, such
|
| +** as the list of "expr AS ID" fields following a "SELECT" or in the
|
| +** list of "ID = expr" items in an UPDATE. A list of expressions can
|
| +** also be used as the argument to a function, in which case the a.zName
|
| +** field is not used.
|
| +*/
|
| +struct ExprList {
|
| + int nExpr; /* Number of expressions on the list */
|
| + int nAlloc; /* Number of entries allocated below */
|
| + int iECursor; /* VDBE Cursor associated with this ExprList */
|
| + struct ExprList_item {
|
| + Expr *pExpr; /* The list of expressions */
|
| + char *zName; /* Token associated with this expression */
|
| + char *zSpan; /* Original text of the expression */
|
| + u8 sortOrder; /* 1 for DESC or 0 for ASC */
|
| + u8 done; /* A flag to indicate when processing is finished */
|
| + u16 iCol; /* For ORDER BY, column number in result set */
|
| + u16 iAlias; /* Index into Parse.aAlias[] for zName */
|
| + } *a; /* One entry for each expression */
|
| +};
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +struct ExprSpan {
|
| + Expr *pExpr; /* The expression parse tree */
|
| + const char *zStart; /* First character of input text */
|
| + const char *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.
|
| +*/
|
| +struct IdList {
|
| + struct IdList_item {
|
| + char *zName; /* Name of the identifier */
|
| + int idx; /* Index in some Table.aCol[] of a column named zName */
|
| + } *a;
|
| + int nId; /* Number of identifiers on the list */
|
| + int nAlloc; /* Number of entries allocated for a[] below */
|
| +};
|
| +
|
| +/*
|
| +** The bitmask datatype defined below is used for various optimizations.
|
| +**
|
| +** Changing this from a 64-bit to a 32-bit type limits the number of
|
| +** tables in a join to 32 instead of 64. But it also reduces the size
|
| +** of the library by 738 bytes on ix86.
|
| +*/
|
| +typedef u64 Bitmask;
|
| +
|
| +/*
|
| +** The number of bits in a Bitmask. "BMS" means "BitMask Size".
|
| +*/
|
| +#define 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.
|
| +*/
|
| +struct SrcList {
|
| + i16 nSrc; /* Number of tables or subqueries in the FROM clause */
|
| + i16 nAlloc; /* Number of entries allocated in a[] below */
|
| + struct SrcList_item {
|
| + char *zDatabase; /* Name of database holding this table */
|
| + char *zName; /* Name of the table */
|
| + char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
|
| + Table *pTab; /* An SQL table corresponding to zName */
|
| + Select *pSelect; /* A SELECT statement used in place of a table name */
|
| + u8 isPopulated; /* Temporary table associated with SELECT is populated */
|
| + u8 jointype; /* Type of join between this able and the previous */
|
| + u8 notIndexed; /* True if there is a NOT INDEXED clause */
|
| +#ifndef SQLITE_OMIT_EXPLAIN
|
| + u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */
|
| +#endif
|
| + int iCursor; /* The VDBE cursor number used to access this table */
|
| + Expr *pOn; /* The ON clause of a join */
|
| + IdList *pUsing; /* The USING clause of a join */
|
| + Bitmask colUsed; /* Bit N (1<<N) set if column N of pTab is used */
|
| + char *zIndex; /* Identifier from "INDEXED BY <zIndex>" clause */
|
| + Index *pIndex; /* Index structure corresponding to zIndex, if any */
|
| + } a[1]; /* One entry for each identifier on the list */
|
| +};
|
| +
|
| +/*
|
| +** Permitted values of the SrcList.a.jointype field
|
| +*/
|
| +#define JT_INNER 0x0001 /* Any kind of inner or cross join */
|
| +#define JT_CROSS 0x0002 /* Explicit use of the CROSS keyword */
|
| +#define JT_NATURAL 0x0004 /* True for a "natural" join */
|
| +#define JT_LEFT 0x0008 /* Left outer join */
|
| +#define JT_RIGHT 0x0010 /* Right outer join */
|
| +#define JT_OUTER 0x0020 /* The "OUTER" keyword is present */
|
| +#define JT_ERROR 0x0040 /* unknown or unsupported join type */
|
| +
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +struct WherePlan {
|
| + u32 wsFlags; /* WHERE_* flags that describe the strategy */
|
| + u32 nEq; /* Number of == constraints */
|
| + double nRow; /* Estimated number of rows (for EQP) */
|
| + union {
|
| + Index *pIdx; /* Index when WHERE_INDEXED is true */
|
| + struct WhereTerm *pTerm; /* WHERE clause term for OR-search */
|
| + sqlite3_index_info *pVtabIdx; /* Virtual table index to use */
|
| + } u;
|
| +};
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +struct WhereLevel {
|
| + WherePlan plan; /* query plan for this element of the FROM clause */
|
| + int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */
|
| + int iTabCur; /* The VDBE cursor used to access the table */
|
| + int iIdxCur; /* The VDBE cursor used to access pIdx */
|
| + int addrBrk; /* Jump here to break out of the loop */
|
| + int addrNxt; /* Jump here to start the next IN combination */
|
| + int addrCont; /* Jump here to continue with the next loop cycle */
|
| + int addrFirst; /* First instruction of interior of the loop */
|
| + u8 iFrom; /* Which entry in the FROM clause */
|
| + u8 op, p5; /* Opcode and P5 of the opcode that ends the loop */
|
| + int p1, p2; /* Operands of the opcode used to ends the loop */
|
| + union { /* Information that depends on plan.wsFlags */
|
| + struct {
|
| + int nIn; /* Number of entries in aInLoop[] */
|
| + struct InLoop {
|
| + int iCur; /* The VDBE cursor used by this IN operator */
|
| + int addrInTop; /* Top of the IN loop */
|
| + } *aInLoop; /* Information about each nested IN operator */
|
| + } in; /* Used when plan.wsFlags&WHERE_IN_ABLE */
|
| + } 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.
|
| + */
|
| + 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 */
|
| +
|
| +/*
|
| +** The WHERE clause processing routine has two halves. The
|
| +** first part does the start of the WHERE loop and the second
|
| +** half does the tail of the WHERE loop. An instance of
|
| +** this structure is returned by the first half and passed
|
| +** into the second half to give some continuity.
|
| +*/
|
| +struct WhereInfo {
|
| + Parse *pParse; /* Parsing and code generating context */
|
| + u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */
|
| + u8 okOnePass; /* Ok to use one-pass algorithm for UPDATE or DELETE */
|
| + u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */
|
| + SrcList *pTabList; /* List of tables in the join */
|
| + int iTop; /* The very beginning of the WHERE loop */
|
| + int iContinue; /* Jump here to continue with next record */
|
| + int iBreak; /* Jump here to break out of the loop */
|
| + int nLevel; /* Number of nested loop */
|
| + struct WhereClause *pWC; /* Decomposition of the WHERE clause */
|
| + double savedNQueryLoop; /* pParse->nQueryLoop outside the WHERE loop */
|
| + double nRowOut; /* Estimated number of output rows */
|
| + WhereLevel a[1]; /* Information about each nest loop in WHERE */
|
| +};
|
| +
|
| +/*
|
| +** A NameContext defines a context in which to resolve table and column
|
| +** names. The context consists of a list of tables (the pSrcList) field and
|
| +** a list of named expression (pEList). The named expression list may
|
| +** be NULL. The pSrc corresponds to the FROM clause of a SELECT or
|
| +** to the table being operated on by INSERT, UPDATE, or DELETE. The
|
| +** pEList corresponds to the result set of a SELECT and is NULL for
|
| +** other statements.
|
| +**
|
| +** NameContexts can be nested. When resolving names, the inner-most
|
| +** context is searched first. If no match is found, the next outer
|
| +** context is checked. If there is still no match, the next context
|
| +** is checked. This process continues until either a match is found
|
| +** or all contexts are check. When a match is found, the nRef member of
|
| +** the context containing the match is incremented.
|
| +**
|
| +** Each subquery gets a new NameContext. The pNext field points to the
|
| +** NameContext in the parent query. Thus the process of scanning the
|
| +** NameContext list corresponds to searching through successively outer
|
| +** subqueries looking for a match.
|
| +*/
|
| +struct NameContext {
|
| + Parse *pParse; /* The parser */
|
| + SrcList *pSrcList; /* One or more tables used to resolve names */
|
| + ExprList *pEList; /* Optional list of named expressions */
|
| + int nRef; /* Number of names resolved by this context */
|
| + int nErr; /* Number of errors encountered while resolving names */
|
| + u8 allowAgg; /* Aggregate functions allowed here */
|
| + u8 hasAgg; /* True if aggregates are seen */
|
| + u8 isCheck; /* True if resolving names in a CHECK constraint */
|
| + int nDepth; /* Depth of subquery recursion. 1 for no recursion */
|
| + AggInfo *pAggInfo; /* Information about aggregates at this level */
|
| + NameContext *pNext; /* Next outer name context. NULL for outermost */
|
| +};
|
| +
|
| +/*
|
| +** An instance of the following structure contains all information
|
| +** needed to generate code for a single SELECT statement.
|
| +**
|
| +** nLimit is set to -1 if there is no LIMIT clause. nOffset is set to 0.
|
| +** If there is a LIMIT clause, the parser sets nLimit to the value of the
|
| +** limit and nOffset to the value of the offset (or 0 if there is not
|
| +** offset). But later on, nLimit and nOffset become the memory locations
|
| +** in the VDBE that record the limit and offset counters.
|
| +**
|
| +** addrOpenEphm[] entries contain the address of OP_OpenEphemeral opcodes.
|
| +** These addresses must be stored so that we can go back and fill in
|
| +** the 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.
|
| +*/
|
| +struct Select {
|
| + ExprList *pEList; /* The fields of the result */
|
| + u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
|
| + char affinity; /* MakeRecord with this affinity for SRT_Set */
|
| + u16 selFlags; /* Various SF_* values */
|
| + SrcList *pSrc; /* The FROM clause */
|
| + Expr *pWhere; /* The WHERE clause */
|
| + ExprList *pGroupBy; /* The GROUP BY clause */
|
| + Expr *pHaving; /* The HAVING clause */
|
| + ExprList *pOrderBy; /* The ORDER BY clause */
|
| + Select *pPrior; /* Prior select in a compound select statement */
|
| + Select *pNext; /* Next select to the left in a compound */
|
| + Select *pRightmost; /* Right-most select in a compound select statement */
|
| + Expr *pLimit; /* LIMIT expression. NULL means not used. */
|
| + Expr *pOffset; /* OFFSET expression. NULL means not used. */
|
| + int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */
|
| + int addrOpenEphm[3]; /* OP_OpenEphem opcodes related to this select */
|
| + double nSelectRow; /* Estimated number of result rows */
|
| +};
|
| +
|
| +/*
|
| +** 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 */
|
| +
|
| +
|
| +/*
|
| +** The results of a select can be distributed in several ways. The
|
| +** "SRT" prefix means "SELECT Result Type".
|
| +*/
|
| +#define SRT_Union 1 /* Store result as keys in an index */
|
| +#define SRT_Except 2 /* Remove result from a UNION index */
|
| +#define SRT_Exists 3 /* Store 1 if the result is not empty */
|
| +#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)
|
| +
|
| +#define SRT_Output 5 /* Output each row of result */
|
| +#define SRT_Mem 6 /* Store result in a memory cell */
|
| +#define SRT_Set 7 /* Store results as keys in an index */
|
| +#define SRT_Table 8 /* Store result as data with an automatic rowid */
|
| +#define SRT_EphemTab 9 /* Create transient tab and store like SRT_Table */
|
| +#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;
|
| +struct SelectDest {
|
| + u8 eDest; /* How to dispose of the results */
|
| + u8 affinity; /* Affinity used when eDest==SRT_Set */
|
| + int iParm; /* A parameter used by the eDest disposal method */
|
| + int iMem; /* Base register where results are written */
|
| + int nMem; /* Number of registers allocated */
|
| +};
|
| +
|
| +/*
|
| +** 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.
|
| +*/
|
| +struct AutoincInfo {
|
| + AutoincInfo *pNext; /* Next info block in a list of them all */
|
| + Table *pTab; /* Table this info block refers to */
|
| + int iDb; /* Index in sqlite3.aDb[] of database holding pTab */
|
| + int regCtr; /* Memory register holding the rowid counter */
|
| +};
|
| +
|
| +/*
|
| +** Size of the column cache
|
| +*/
|
| +#ifndef SQLITE_N_COLCACHE
|
| +# define 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.
|
| +*/
|
| +struct TriggerPrg {
|
| + Trigger *pTrigger; /* Trigger this program was coded from */
|
| + int orconf; /* Default ON CONFLICT policy */
|
| + SubProgram *pProgram; /* Program implementing pTrigger/orconf */
|
| + u32 aColmask[2]; /* Masks of old.*, new.* columns accessed */
|
| + TriggerPrg *pNext; /* Next entry in Parse.pTriggerPrg list */
|
| +};
|
| +
|
| +/*
|
| +** The yDbMask datatype for the bitmask of all attached databases.
|
| +*/
|
| +#if SQLITE_MAX_ATTACHED>30
|
| + typedef sqlite3_uint64 yDbMask;
|
| +#else
|
| + typedef unsigned int yDbMask;
|
| +#endif
|
| +
|
| +/*
|
| +** An SQL parser context. A copy of this structure is passed through
|
| +** the parser and down into all the parser action routine in order to
|
| +** carry around information that is global to the entire parse.
|
| +**
|
| +** The structure is divided into two parts. When the parser and code
|
| +** generate call themselves recursively, the first part of the structure
|
| +** is constant but the second part is reset at the beginning and end of
|
| +** each recursion.
|
| +**
|
| +** The nTableLock and aTableLock variables are only used if the shared-cache
|
| +** feature is enabled (if sqlite3Tsd()->useSharedData is true). They are
|
| +** used to store the set of table-locks required by the statement being
|
| +** compiled. Function sqlite3TableLock() is used to add entries to the
|
| +** list.
|
| +*/
|
| +struct Parse {
|
| + sqlite3 *db; /* The main database structure */
|
| + int rc; /* Return code from execution */
|
| + char *zErrMsg; /* An error message */
|
| + Vdbe *pVdbe; /* An engine for executing database bytecode */
|
| + u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
|
| + u8 nameClash; /* A permanent table name clashes with temp table name */
|
| + u8 checkSchema; /* Causes schema cookie check after an error */
|
| + u8 nested; /* Number of nested calls to the parser/code generator */
|
| + u8 parseError; /* True after a parsing error. Ticket #1794 */
|
| + u8 nTempReg; /* Number of temporary registers in aTempReg[] */
|
| + u8 nTempInUse; /* Number of aTempReg[] currently checked out */
|
| + int aTempReg[8]; /* Holding area for temporary registers */
|
| + int nRangeReg; /* Size of the temporary register block */
|
| + int iRangeReg; /* First register in temporary register block */
|
| + int nErr; /* Number of errors seen */
|
| + int nTab; /* Number of previously allocated VDBE cursors */
|
| + int nMem; /* Number of memory cells used so far */
|
| + int nSet; /* Number of sets used so far */
|
| + int ckBase; /* Base register of data during check constraints */
|
| + int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
|
| + int iCacheCnt; /* Counter used to generate aColCache[].lru values */
|
| + u8 nColCache; /* Number of entries in the column cache */
|
| + u8 iColCache; /* Next entry of the cache to replace */
|
| + struct yColCache {
|
| + int iTable; /* Table cursor number */
|
| + int iColumn; /* Table column number */
|
| + u8 tempReg; /* iReg is a temp register that needs to be freed */
|
| + int iLevel; /* Nesting level */
|
| + int iReg; /* Reg with value of this column. 0 means none. */
|
| + int lru; /* Least recently used entry has the smallest value */
|
| + } aColCache[SQLITE_N_COLCACHE]; /* One for each column cache entry */
|
| + yDbMask writeMask; /* Start a write transaction on these databases */
|
| + yDbMask cookieMask; /* Bitmask of schema verified databases */
|
| + u8 isMultiWrite; /* True if statement may affect/insert multiple rows */
|
| + u8 mayAbort; /* True if statement may throw an ABORT exception */
|
| + int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
|
| + int cookieValue[SQLITE_MAX_ATTACHED+2]; /* Values of cookies to verify */
|
| +#ifndef SQLITE_OMIT_SHARED_CACHE
|
| + int nTableLock; /* Number of locks in aTableLock */
|
| + TableLock *aTableLock; /* Required table locks for shared-cache mode */
|
| +#endif
|
| + int regRowid; /* Register holding rowid of CREATE TABLE entry */
|
| + int regRoot; /* Register holding root page number for new objects */
|
| + AutoincInfo *pAinc; /* Information about AUTOINCREMENT counters */
|
| + int nMaxArg; /* Max args passed to user function by sub-program */
|
| +
|
| + /* Information used while coding trigger programs. */
|
| + Parse *pToplevel; /* Parse structure for main program (or NULL) */
|
| + Table *pTriggerTab; /* Table triggers are being coded for */
|
| + u32 oldmask; /* Mask of old.* columns referenced */
|
| + u32 newmask; /* Mask of new.* columns referenced */
|
| + u8 eTriggerOp; /* TK_UPDATE, TK_INSERT or TK_DELETE */
|
| + u8 eOrconf; /* Default ON CONFLICT policy for trigger steps */
|
| + u8 disableTriggers; /* True to disable triggers */
|
| + double nQueryLoop; /* Estimated number of iterations of a query */
|
| +
|
| + /* Above is constant between recursions. Below is reset before and after
|
| + ** each recursion */
|
| +
|
| + int nVar; /* Number of '?' variables seen in the SQL so far */
|
| + int nVarExpr; /* Number of used slots in apVarExpr[] */
|
| + int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
|
| + Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
|
| + Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */
|
| + int nAlias; /* Number of aliased result set columns */
|
| + int nAliasAlloc; /* Number of allocated slots for aAlias[] */
|
| + int *aAlias; /* Register used to hold aliased result */
|
| + u8 explain; /* True if the EXPLAIN flag is found on the query */
|
| + Token sNameToken; /* Token with unqualified schema object name */
|
| + Token sLastToken; /* The last token parsed */
|
| + const char *zTail; /* All SQL text past the last semicolon parsed */
|
| + Table *pNewTable; /* A table being constructed by CREATE TABLE */
|
| + Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
|
| + const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
|
| +#ifndef SQLITE_OMIT_VIRTUALTABLE
|
| + Token sArg; /* Complete text of a module argument */
|
| + u8 declareVtab; /* True if inside sqlite3_declare_vtab() */
|
| + int nVtabLock; /* Number of virtual tables to lock */
|
| + Table **apVtabLock; /* Pointer to virtual tables needing locking */
|
| +#endif
|
| + int nHeight; /* Expression tree height of current sub-select */
|
| + Table *pZombieTab; /* List of Table objects to delete after code gen */
|
| + TriggerPrg *pTriggerPrg; /* Linked list of coded triggers */
|
| +
|
| +#ifndef SQLITE_OMIT_EXPLAIN
|
| + int iSelectId;
|
| + int iNextSelectId;
|
| +#endif
|
| +};
|
| +
|
| +#ifdef SQLITE_OMIT_VIRTUALTABLE
|
| + #define IN_DECLARE_VTAB 0
|
| +#else
|
| + #define IN_DECLARE_VTAB (pParse->declareVtab)
|
| +#endif
|
| +
|
| +/*
|
| +** An instance of the following structure can be declared on a stack and used
|
| +** to save the Parse.zAuthContext value so that it can be restored later.
|
| +*/
|
| +struct AuthContext {
|
| + const char *zAuthContext; /* Put saved Parse.zAuthContext here */
|
| + Parse *pParse; /* The Parse structure */
|
| +};
|
| +
|
| +/*
|
| +** Bitfield flags for 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 */
|
| +
|
| +/*
|
| + * Each trigger present in the database schema is stored as an instance of
|
| + * struct Trigger.
|
| + *
|
| + * Pointers to instances of struct Trigger are stored in two ways.
|
| + * 1. In the "trigHash" hash table (part of the sqlite3* that represents the
|
| + * database). This allows Trigger structures to be retrieved by name.
|
| + * 2. All triggers associated with a single table form a linked list, using the
|
| + * pNext member of struct Trigger. A pointer to the first element of the
|
| + * linked list is stored as the "pTrigger" member of the associated
|
| + * struct Table.
|
| + *
|
| + * The "step_list" member points to the first element of a linked list
|
| + * containing the SQL statements specified as the trigger program.
|
| + */
|
| +struct Trigger {
|
| + char *zName; /* The name of the trigger */
|
| + char *table; /* The table or view to which the trigger applies */
|
| + u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
|
| + u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
|
| + Expr *pWhen; /* The WHEN clause of the expression (may be NULL) */
|
| + IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger,
|
| + the <column-list> is stored here */
|
| + Schema *pSchema; /* Schema containing the trigger */
|
| + Schema *pTabSchema; /* Schema containing the table */
|
| + TriggerStep *step_list; /* Link list of trigger program steps */
|
| + Trigger *pNext; /* Next trigger associated with the table */
|
| +};
|
| +
|
| +/*
|
| +** A trigger is either a BEFORE or an AFTER trigger. The following constants
|
| +** determine which.
|
| +**
|
| +** If there are multiple triggers, you might of some BEFORE and some AFTER.
|
| +** In that cases, the constants below can be ORed together.
|
| +*/
|
| +#define TRIGGER_BEFORE 1
|
| +#define TRIGGER_AFTER 2
|
| +
|
| +/*
|
| + * An instance of struct TriggerStep is used to store a single SQL statement
|
| + * that is a part of a trigger-program.
|
| + *
|
| + * Instances of struct TriggerStep are stored in a singly linked list (linked
|
| + * using the "pNext" member) referenced by the "step_list" member of the
|
| + * associated struct Trigger instance. The first element of the linked list is
|
| + * the first step of the trigger-program.
|
| + *
|
| + * The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or
|
| + * "SELECT" statement. The meanings of the other members is determined by the
|
| + * value of "op" as follows:
|
| + *
|
| + * (op == TK_INSERT)
|
| + * orconf -> stores the ON CONFLICT algorithm
|
| + * pSelect -> If this is an INSERT INTO ... SELECT ... statement, then
|
| + * this stores a pointer to the SELECT statement. Otherwise NULL.
|
| + * target -> A token holding the 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.
|
| + *
|
| + */
|
| +struct TriggerStep {
|
| + u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */
|
| + u8 orconf; /* OE_Rollback etc. */
|
| + Trigger *pTrig; /* The trigger that this step is a part of */
|
| + Select *pSelect; /* SELECT statment or RHS of INSERT INTO .. SELECT ... */
|
| + Token target; /* Target table for DELETE, UPDATE, INSERT */
|
| + Expr *pWhere; /* The WHERE clause for DELETE or UPDATE steps */
|
| + ExprList *pExprList; /* SET clause for UPDATE. VALUES clause for INSERT */
|
| + IdList *pIdList; /* Column names for INSERT */
|
| + TriggerStep *pNext; /* Next in the link-list */
|
| + TriggerStep *pLast; /* Last element in link-list. Valid for 1st elem only */
|
| +};
|
| +
|
| +/*
|
| +** The following structure contains information used by the sqliteFix...
|
| +** routines as they walk the parse tree to make database references
|
| +** explicit.
|
| +*/
|
| +typedef struct DbFixer DbFixer;
|
| +struct DbFixer {
|
| + Parse *pParse; /* The parsing context. Error messages written here */
|
| + const char *zDb; /* Make sure all objects are contained in this database */
|
| + const char *zType; /* Type of the container - used for error messages */
|
| + const Token *pName; /* Name of the container - used for error messages */
|
| +};
|
| +
|
| +/*
|
| +** An objected used to accumulate the text of a string where we
|
| +** do not necessarily know how big the string will be in the end.
|
| +*/
|
| +struct StrAccum {
|
| + sqlite3 *db; /* Optional database for lookaside. Can be NULL */
|
| + char *zBase; /* A base allocation. Not from malloc. */
|
| + char *zText; /* The string collected so far */
|
| + int nChar; /* Length of the string so far */
|
| + int nAlloc; /* Amount of space allocated in zText */
|
| + int mxAlloc; /* Maximum allowed string length */
|
| + u8 mallocFailed; /* Becomes true if any memory allocation fails */
|
| + u8 useMalloc; /* 0: none, 1: sqlite3DbMalloc, 2: sqlite3_malloc */
|
| + u8 tooBig; /* Becomes true if string size exceeds limits */
|
| +};
|
| +
|
| +/*
|
| +** A pointer to this structure is used to communicate information
|
| +** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
|
| +*/
|
| +typedef struct {
|
| + sqlite3 *db; /* The database being initialized */
|
| + int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */
|
| + char **pzErrMsg; /* Error message stored here */
|
| + int rc; /* Result code stored here */
|
| +} InitData;
|
| +
|
| +/*
|
| +** Structure containing global configuration data for the SQLite library.
|
| +**
|
| +** This structure also contains some state information.
|
| +*/
|
| +struct Sqlite3Config {
|
| + int bMemstat; /* True to enable memory status */
|
| + int bCoreMutex; /* True to enable core mutexing */
|
| + int bFullMutex; /* True to enable full mutexing */
|
| + int mxStrlen; /* Maximum string length */
|
| + int szLookaside; /* Default lookaside buffer size */
|
| + int nLookaside; /* Default lookaside buffer count */
|
| + sqlite3_mem_methods m; /* Low-level memory allocation interface */
|
| + sqlite3_mutex_methods mutex; /* Low-level mutex interface */
|
| + sqlite3_pcache_methods pcache; /* Low-level page-cache interface */
|
| + void *pHeap; /* Heap storage space */
|
| + int nHeap; /* Size of pHeap[] */
|
| + int mnReq, mxReq; /* Min and max heap requests sizes */
|
| + void *pScratch; /* Scratch memory */
|
| + int szScratch; /* Size of each scratch buffer */
|
| + int nScratch; /* Number of scratch buffers */
|
| + void *pPage; /* Page cache memory */
|
| + int szPage; /* Size of each page in pPage[] */
|
| + int nPage; /* Number of pages in pPage[] */
|
| + int mxParserStack; /* maximum depth of the parser stack */
|
| + int sharedCacheEnabled; /* true if shared-cache mode enabled */
|
| + /* The above might be initialized to non-zero. The following need to always
|
| + ** initially be zero, however. */
|
| + int isInit; /* True after initialization has finished */
|
| + int inProgress; /* True while initialization in progress */
|
| + int isMutexInit; /* True after mutexes are initialized */
|
| + int isMallocInit; /* True after malloc is initialized */
|
| + int isPCacheInit; /* True after malloc is initialized */
|
| + sqlite3_mutex *pInitMutex; /* Mutex used by sqlite3_initialize() */
|
| + int nRefInitMutex; /* Number of users of pInitMutex */
|
| + void (*xLog)(void*,int,const char*); /* Function for logging */
|
| + void *pLogArg; /* First argument to xLog() */
|
| +};
|
| +
|
| +/*
|
| +** Context pointer passed down through the tree-walk.
|
| +*/
|
| +struct Walker {
|
| + int (*xExprCallback)(Walker*, Expr*); /* Callback for expressions */
|
| + int (*xSelectCallback)(Walker*,Select*); /* Callback for SELECTs */
|
| + Parse *pParse; /* Parser context. */
|
| + union { /* Extra data for callback */
|
| + NameContext *pNC; /* Naming context */
|
| + int i; /* Integer value */
|
| + } 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 */
|
| +
|
| +/*
|
| +** Assuming zIn points to the first byte of a UTF-8 character,
|
| +** advance zIn to point to the first byte of the next UTF-8 character.
|
| +*/
|
| +#define SQLITE_SKIP_UTF8(zIn) { \
|
| + if( (*(zIn++))>=0xc0 ){ \
|
| + while( (*zIn & 0xc0)==0x80 ){ zIn++; } \
|
| + } \
|
| +}
|
| +
|
| +/*
|
| +** The SQLITE_*_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);
|
| +#define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__)
|
| +#define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__)
|
| +#define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__)
|
| +
|
| +
|
| +/*
|
| +** 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 defined(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.
|
| +*/
|
| +#ifdef SQLITE_ASCII
|
| +# define sqlite3Toupper(x) ((x)&~(sqlite3CtypeMap[(unsigned char)(x)]&0x20))
|
| +# define sqlite3Isspace(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x01)
|
| +# define sqlite3Isalnum(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x06)
|
| +# define sqlite3Isalpha(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x02)
|
| +# define sqlite3Isdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x04)
|
| +# define sqlite3Isxdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x08)
|
| +# 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.
|
| +*/
|
| +#ifdef SQLITE_USE_ALLOCA
|
| +# define sqlite3StackAllocRaw(D,N) alloca(N)
|
| +# define sqlite3StackAllocZero(D,N) memset(alloca(N), 0, N)
|
| +# define sqlite3StackFree(D,P)
|
| +#else
|
| +# define sqlite3StackAllocRaw(D,N) sqlite3DbMallocRaw(D,N)
|
| +# define sqlite3StackAllocZero(D,N) sqlite3DbMallocZero(D,N)
|
| +# define sqlite3StackFree(D,P) sqlite3DbFree(D,P)
|
| +#endif
|
| +
|
| +#ifdef SQLITE_ENABLE_MEMSYS3
|
| +const sqlite3_mem_methods *sqlite3MemGetMemsys3(void);
|
| +#endif
|
| +#ifdef SQLITE_ENABLE_MEMSYS5
|
| +const sqlite3_mem_methods *sqlite3MemGetMemsys5(void);
|
| +#endif
|
| +
|
| +
|
| +#ifndef 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);
|
| +#ifndef 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 defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
|
| + void sqlite3DebugPrintf(const char*, ...);
|
| +#endif
|
| +#if defined(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 !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE)
|
| + int sqlite3ViewGetColumnNames(Parse*,Table*);
|
| +#else
|
| +# define sqlite3ViewGetColumnNames(A,B) 0
|
| +#endif
|
| +
|
| +void sqlite3DropTable(Parse*, SrcList*, int, int);
|
| +void sqlite3DeleteTable(sqlite3*, Table*);
|
| +#ifndef 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 defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(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 sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb);
|
| +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 !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
|
| +void sqlite3MaterializeView(Parse*, Table*, Expr*, int);
|
| +#endif
|
| +
|
| +#ifndef SQLITE_OMIT_TRIGGER
|
| + void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
|
| + Expr*,int, int);
|
| + void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
|
| + void sqlite3DropTrigger(Parse*, SrcList*, int);
|
| + void sqlite3DropTriggerPtr(Parse*, Trigger*);
|
| + Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask);
|
| + Trigger *sqlite3TriggerList(Parse *, Table *);
|
| + void sqlite3CodeRowTrigger(Parse*, Trigger *, int, ExprList*, int, Table *,
|
| + int, int, int);
|
| + void sqlite3CodeRowTriggerDirect(Parse *, Trigger *, 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))
|
| +#else
|
| +# define sqlite3TriggersExist(B,C,D,E,F) 0
|
| +# define sqlite3DeleteTrigger(A,B)
|
| +# define sqlite3DropTriggerPtr(A,B)
|
| +# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
|
| +# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I)
|
| +# define sqlite3CodeRowTriggerDirect(A,B,C,D,E,F)
|
| +# define sqlite3TriggerList(X, Y) 0
|
| +# define sqlite3ParseToplevel(p) p
|
| +# define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0
|
| +#endif
|
| +
|
| +int sqlite3JoinType(Parse*, Token*, Token*, Token*);
|
| +void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
|
| +void sqlite3DeferForeignKey(Parse*, int);
|
| +#ifndef SQLITE_OMIT_AUTHORIZATION
|
| + void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
|
| + int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*);
|
| + void sqlite3AuthContextPush(Parse*, AuthContext*, const char*);
|
| + void sqlite3AuthContextPop(AuthContext*);
|
| + int sqlite3AuthReadCol(Parse*, const char *, const char *, int);
|
| +#else
|
| +# define sqlite3AuthRead(a,b,c,d)
|
| +# define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK
|
| +# define sqlite3AuthContextPush(a,b,c)
|
| +# define sqlite3AuthContextPop(a) ((void)(a))
|
| +#endif
|
| +void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
|
| +void sqlite3Detach(Parse*, Expr*);
|
| +int sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
|
| +int sqlite3FixSrcList(DbFixer*, SrcList*);
|
| +int sqlite3FixSelect(DbFixer*, Select*);
|
| +int sqlite3FixExpr(DbFixer*, Expr*);
|
| +int sqlite3FixExprList(DbFixer*, ExprList*);
|
| +int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
|
| +int sqlite3AtoF(const char *z, double*, 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 sqlite3PutVarint32(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 = sqlite3PutVarint32( 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);
|
| +int sqlite3AddInt64(i64*,i64);
|
| +int sqlite3SubInt64(i64*,i64);
|
| +int sqlite3MulInt64(i64*,i64);
|
| +int sqlite3AbsInt32(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);
|
| +#ifndef 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(sqlite3*, int, 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 sqlite3SchemaClear(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 sqlite3StrAccumInit(StrAccum*, char*, int, int);
|
| +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*);
|
| +#ifdef YYTRACKMAXSTACKDEPTH
|
| + int sqlite3ParserStackPeak(void*);
|
| +#endif
|
| +
|
| +void sqlite3AutoLoadExtensions(sqlite3*);
|
| +#ifndef SQLITE_OMIT_LOAD_EXTENSION
|
| + void sqlite3CloseExtensions(sqlite3*);
|
| +#else
|
| +# define sqlite3CloseExtensions(X)
|
| +#endif
|
| +
|
| +#ifndef SQLITE_OMIT_SHARED_CACHE
|
| + void sqlite3TableLock(Parse *, int, int, u8, const char *);
|
| +#else
|
| + #define sqlite3TableLock(v,w,x,y,z)
|
| +#endif
|
| +
|
| +#ifdef SQLITE_TEST
|
| + int sqlite3Utf8To8(unsigned char*);
|
| +#endif
|
| +
|
| +#ifdef SQLITE_OMIT_VIRTUALTABLE
|
| +# define sqlite3VtabClear(Y)
|
| +# define sqlite3VtabSync(X,Y) SQLITE_OK
|
| +# define sqlite3VtabRollback(X)
|
| +# define sqlite3VtabCommit(X)
|
| +# define sqlite3VtabInSync(db) 0
|
| +# define sqlite3VtabLock(X)
|
| +# define sqlite3VtabUnlock(X)
|
| +# define sqlite3VtabUnlockList(X)
|
| +#else
|
| + void sqlite3VtabClear(sqlite3 *db, Table*);
|
| + int sqlite3VtabSync(sqlite3 *db, char **);
|
| + 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)
|
| +#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, int*, 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 !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(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)
|
| + #define sqlite3FkCheck(a,b,c,d)
|
| + #define sqlite3FkDropTable(a,b,c)
|
| + #define sqlite3FkOldmask(a,b) 0
|
| + #define sqlite3FkRequired(a,b,c,d) 0
|
| +#endif
|
| +#ifndef SQLITE_OMIT_FOREIGN_KEY
|
| + void sqlite3FkDelete(sqlite3 *, Table*);
|
| +#else
|
| + #define sqlite3FkDelete(a,b)
|
| +#endif
|
| +
|
| +
|
| +/*
|
| +** Available fault injectors. Should be numbered beginning with 0.
|
| +*/
|
| +#define SQLITE_FAULTINJECTOR_MALLOC 0
|
| +#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.
|
| +*/
|
| +#ifndef SQLITE_OMIT_BUILTIN_TEST
|
| + void sqlite3BeginBenignMalloc(void);
|
| + void sqlite3EndBenignMalloc(void);
|
| +#else
|
| + #define sqlite3BeginBenignMalloc()
|
| + #define sqlite3EndBenignMalloc()
|
| +#endif
|
| +
|
| +#define IN_INDEX_ROWID 1
|
| +#define IN_INDEX_EPH 2
|
| +#define IN_INDEX_INDEX 3
|
| +int sqlite3FindInIndex(Parse *, Expr *, int*);
|
| +
|
| +#ifdef SQLITE_ENABLE_ATOMIC_WRITE
|
| + int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int);
|
| + int sqlite3JournalSize(sqlite3_vfs *);
|
| + int sqlite3JournalCreate(sqlite3_file *);
|
| +#else
|
| + #define sqlite3JournalSize(pVfs) ((pVfs)->szOsFile)
|
| +#endif
|
| +
|
| +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 sqlite3Put4byte(u8*, u32);
|
| +
|
| +#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
|
| + void sqlite3ConnectionBlocked(sqlite3 *, sqlite3 *);
|
| + void sqlite3ConnectionUnlocked(sqlite3 *db);
|
| + void sqlite3ConnectionClosed(sqlite3 *db);
|
| +#else
|
| + #define sqlite3ConnectionBlocked(x,y)
|
| + #define sqlite3ConnectionUnlocked(x)
|
| + #define sqlite3ConnectionClosed(x)
|
| +#endif
|
| +
|
| +#ifdef 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.
|
| +*/
|
| +#ifdef SQLITE_ENABLE_IOTRACE
|
| +# define IOTRACE(A) if( sqlite3IoTrace ){ sqlite3IoTrace A; }
|
| + void sqlite3VdbeIOTraceSql(Vdbe*);
|
| +SQLITE_EXTERN void (*sqlite3IoTrace)(const char*,...);
|
| +#else
|
| +# define IOTRACE(A)
|
| +# define sqlite3VdbeIOTraceSql(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.
|
| +*/
|
| +#ifdef SQLITE_MEMDEBUG
|
| + void sqlite3MemdebugSetType(void*,u8);
|
| + int sqlite3MemdebugHasType(void*,u8);
|
| + int sqlite3MemdebugNoType(void*,u8);
|
| +#else
|
| +# define sqlite3MemdebugSetType(X,Y) /* no-op */
|
| +# define sqlite3MemdebugHasType(X,Y) 1
|
| +# define sqlite3MemdebugNoType(X,Y) 1
|
| +#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 */
|
| +
|
| +#endif /* _SQLITEINT_H_ */
|
|
|
Chromium Code Reviews
Issue 949043002:
Add //third_party/sqlite to dirs_to_snapshot, remove net_sql.patch (Closed)
Base URL: git@github.com:domokit/mojo.git@master