diff options
Diffstat (limited to 'chromium/third_party/sqlite/sqlite-src-3240000/src/sqliteInt.h')
| -rw-r--r-- | chromium/third_party/sqlite/sqlite-src-3240000/src/sqliteInt.h | 4491 |
1 files changed, 0 insertions, 4491 deletions
diff --git a/chromium/third_party/sqlite/sqlite-src-3240000/src/sqliteInt.h b/chromium/third_party/sqlite/sqlite-src-3240000/src/sqliteInt.h deleted file mode 100644 index 91fde727a2b..00000000000 --- a/chromium/third_party/sqlite/sqlite-src-3240000/src/sqliteInt.h +++ /dev/null @@ -1,4491 +0,0 @@ -/* -** 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 - -/* Special Comments: -** -** Some comments have special meaning to the tools that measure test -** coverage: -** -** NO_TEST - The branches on this line are not -** measured by branch coverage. This is -** used on lines of code that actually -** implement parts of coverage testing. -** -** OPTIMIZATION-IF-TRUE - This branch is allowed to alway be false -** and the correct answer is still obtained, -** though perhaps more slowly. -** -** OPTIMIZATION-IF-FALSE - This branch is allowed to alway be true -** and the correct answer is still obtained, -** though perhaps more slowly. -** -** PREVENTS-HARMLESS-OVERREAD - This branch prevents a buffer overread -** that would be harmless and undetectable -** if it did occur. -** -** In all cases, the special comment must be enclosed in the usual -** slash-asterisk...asterisk-slash comment marks, with no spaces between the -** asterisks and the comment text. -*/ - -/* -** Make sure the Tcl calling convention macro is defined. This macro is -** only used by test code and Tcl integration code. -*/ -#ifndef SQLITE_TCLAPI -# define SQLITE_TCLAPI -#endif - -/* -** Include the header file used to customize the compiler options for MSVC. -** This should be done first so that it can successfully prevent spurious -** compiler warnings due to subsequent content in this file and other files -** that are included by this file. -*/ -#include "msvc.h" - -/* -** Special setup for VxWorks -*/ -#include "vxworks.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. -** -** The previous paragraph was written in 2005. (This paragraph is written -** on 2008-11-28.) These days, all Linux kernels support large files, so -** you should probably leave LFS enabled. But some embedded platforms might -** lack LFS in which case the SQLITE_DISABLE_LFS macro might still be useful. -** -** 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 - -/* The GCC_VERSION and MSVC_VERSION macros are used to -** conditionally include optimizations for each of these compilers. A -** value of 0 means that compiler is not being used. The -** SQLITE_DISABLE_INTRINSIC macro means do not use any compiler-specific -** optimizations, and hence set all compiler macros to 0 -** -** There was once also a CLANG_VERSION macro. However, we learn that the -** version numbers in clang are for "marketing" only and are inconsistent -** and unreliable. Fortunately, all versions of clang also recognize the -** gcc version numbers and have reasonable settings for gcc version numbers, -** so the GCC_VERSION macro will be set to a correct non-zero value even -** when compiling with clang. -*/ -#if defined(__GNUC__) && !defined(SQLITE_DISABLE_INTRINSIC) -# define GCC_VERSION (__GNUC__*1000000+__GNUC_MINOR__*1000+__GNUC_PATCHLEVEL__) -#else -# define GCC_VERSION 0 -#endif -#if defined(_MSC_VER) && !defined(SQLITE_DISABLE_INTRINSIC) -# define MSVC_VERSION _MSC_VER -#else -# define MSVC_VERSION 0 -#endif - -/* Needed for various definitions... */ -#if defined(__GNUC__) && !defined(_GNU_SOURCE) -# define _GNU_SOURCE -#endif - -#if defined(__OpenBSD__) && !defined(_BSD_SOURCE) -# define _BSD_SOURCE -#endif - -/* -** For MinGW, check to see if we can include the header file containing its -** version information, among other things. Normally, this internal MinGW -** header file would [only] be included automatically by other MinGW header -** files; however, the contained version information is now required by this -** header file to work around binary compatibility issues (see below) and -** this is the only known way to reliably obtain it. This entire #if block -** would be completely unnecessary if there was any other way of detecting -** MinGW via their preprocessor (e.g. if they customized their GCC to define -** some MinGW-specific macros). When compiling for MinGW, either the -** _HAVE_MINGW_H or _HAVE__MINGW_H (note the extra underscore) macro must be -** defined; otherwise, detection of conditions specific to MinGW will be -** disabled. -*/ -#if defined(_HAVE_MINGW_H) -# include "mingw.h" -#elif defined(_HAVE__MINGW_H) -# include "_mingw.h" -#endif - -/* -** For MinGW version 4.x (and higher), check to see if the _USE_32BIT_TIME_T -** define is required to maintain binary compatibility with the MSVC runtime -** library in use (e.g. for Windows XP). -*/ -#if !defined(_USE_32BIT_TIME_T) && !defined(_USE_64BIT_TIME_T) && \ - defined(_WIN32) && !defined(_WIN64) && \ - defined(__MINGW_MAJOR_VERSION) && __MINGW_MAJOR_VERSION >= 4 && \ - defined(__MSVCRT__) -# define _USE_32BIT_TIME_T -#endif - -/* The public SQLite interface. The _FILE_OFFSET_BITS macro must appear -** first in QNX. Also, the _USE_32BIT_TIME_T macro must appear first for -** MinGW. -*/ -#include "sqlite3.h" - -/* -** Include the configuration header output by 'configure' if we're using the -** autoconf-based build -*/ -#if defined(_HAVE_SQLITE_CONFIG_H) && !defined(SQLITECONFIG_H) -#include "config.h" -#define SQLITECONFIG_H 1 -#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 - -/* -** Include standard header files as necessary -*/ -#ifdef HAVE_STDINT_H -#include <stdint.h> -#endif -#ifdef HAVE_INTTYPES_H -#include <inttypes.h> -#endif - -/* -** 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 - -/* -** A macro to hint to the compiler that a function should not be -** inlined. -*/ -#if defined(__GNUC__) -# define SQLITE_NOINLINE __attribute__((noinline)) -#elif defined(_MSC_VER) && _MSC_VER>=1310 -# define SQLITE_NOINLINE __declspec(noinline) -#else -# define SQLITE_NOINLINE -#endif - -/* -** Make sure that the compiler intrinsics we desire are enabled when -** compiling with an appropriate version of MSVC unless prevented by -** the SQLITE_DISABLE_INTRINSIC define. -*/ -#if !defined(SQLITE_DISABLE_INTRINSIC) -# if defined(_MSC_VER) && _MSC_VER>=1400 -# if !defined(_WIN32_WCE) -# include <intrin.h> -# pragma intrinsic(_byteswap_ushort) -# pragma intrinsic(_byteswap_ulong) -# pragma intrinsic(_byteswap_uint64) -# pragma intrinsic(_ReadWriteBarrier) -# else -# include <cmnintrin.h> -# endif -# endif -#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 library 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. -** -** To ensure that the correct value of "THREADSAFE" is reported when querying -** for compile-time options at runtime (e.g. "PRAGMA compile_options"), this -** logic is partially replicated in ctime.c. If it is updated here, it should -** also be updated there. -*/ -#if !defined(SQLITE_THREADSAFE) -# if defined(THREADSAFE) -# define SQLITE_THREADSAFE THREADSAFE -# else -# define SQLITE_THREADSAFE 1 /* IMP: R-07272-22309 */ -# endif -#endif - -/* -** Powersafe overwrite is on by default. But can be turned off using -** the -DSQLITE_POWERSAFE_OVERWRITE=0 command-line option. -*/ -#ifndef SQLITE_POWERSAFE_OVERWRITE -# define SQLITE_POWERSAFE_OVERWRITE 1 -#endif - -/* -** EVIDENCE-OF: R-25715-37072 Memory allocation statistics are enabled by -** default unless SQLite is compiled with SQLITE_DEFAULT_MEMSTATUS=0 in -** which case memory allocation statistics are disabled by default. -*/ -#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_WIN32_MALLOC // Use Win32 native heap API -** SQLITE_ZERO_MALLOC // Use a stub allocator that always fails -** SQLITE_MEMDEBUG // Debugging version of system malloc() -** -** On Windows, if the SQLITE_WIN32_MALLOC_VALIDATE macro is defined and the -** assert() macro is enabled, each call into the Win32 native heap subsystem -** will cause HeapValidate to be called. If heap validation should fail, an -** assertion will be triggered. -** -** If none of the above are defined, then set SQLITE_SYSTEM_MALLOC as -** the default. -*/ -#if defined(SQLITE_SYSTEM_MALLOC) \ - + defined(SQLITE_WIN32_MALLOC) \ - + defined(SQLITE_ZERO_MALLOC) \ - + defined(SQLITE_MEMDEBUG)>1 -# error "Two or more of the following compile-time configuration options\ - are defined but at most one is allowed:\ - SQLITE_SYSTEM_MALLOC, SQLITE_WIN32_MALLOC, SQLITE_MEMDEBUG,\ - SQLITE_ZERO_MALLOC" -#endif -#if defined(SQLITE_SYSTEM_MALLOC) \ - + defined(SQLITE_WIN32_MALLOC) \ - + defined(SQLITE_ZERO_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 and fchmod() on OpenBSD. -** But _XOPEN_SOURCE define causes problems for Mac OS X, so omit -** it. -*/ -#if !defined(_XOPEN_SOURCE) && !defined(__DARWIN__) && !defined(__APPLE__) -# define _XOPEN_SOURCE 600 -#endif - -/* -** NDEBUG and SQLITE_DEBUG are opposites. It should always be true that -** defined(NDEBUG)==!defined(SQLITE_DEBUG). If this is not currently true, -** make it true by defining or undefining NDEBUG. -** -** Setting NDEBUG makes the code smaller and faster by disabling the -** assert() statements in the code. So we want the default action -** to be for NDEBUG to be set and NDEBUG to be undefined only if SQLITE_DEBUG -** is set. Thus NDEBUG becomes an opt-in rather than an opt-out -** feature. -*/ -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) -# define NDEBUG 1 -#endif -#if defined(NDEBUG) && defined(SQLITE_DEBUG) -# undef NDEBUG -#endif - -/* -** Enable SQLITE_ENABLE_EXPLAIN_COMMENTS if SQLITE_DEBUG is turned on. -*/ -#if !defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) && defined(SQLITE_DEBUG) -# define SQLITE_ENABLE_EXPLAIN_COMMENTS 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 they specify will -** not be counted as untested code. -*/ -#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_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 - -/* -** Some conditionals are optimizations only. In other words, if the -** conditionals are replaced with a constant 1 (true) or 0 (false) then -** the correct answer is still obtained, though perhaps not as quickly. -** -** The following macros mark these optimizations conditionals. -*/ -#if defined(SQLITE_MUTATION_TEST) -# define OK_IF_ALWAYS_TRUE(X) (1) -# define OK_IF_ALWAYS_FALSE(X) (0) -#else -# define OK_IF_ALWAYS_TRUE(X) (X) -# define OK_IF_ALWAYS_FALSE(X) (X) -#endif - -/* -** Some malloc failures are only possible if SQLITE_TEST_REALLOC_STRESS is -** defined. We need to defend against those failures when testing with -** SQLITE_TEST_REALLOC_STRESS, but we don't want the unreachable branches -** during a normal build. The following macro can be used to disable tests -** that are always false except when SQLITE_TEST_REALLOC_STRESS is set. -*/ -#if defined(SQLITE_TEST_REALLOC_STRESS) -# define ONLY_IF_REALLOC_STRESS(X) (X) -#elif !defined(NDEBUG) -# define ONLY_IF_REALLOC_STRESS(X) ((X)?(assert(0),1):0) -#else -# define ONLY_IF_REALLOC_STRESS(X) (0) -#endif - -/* -** Declarations used for tracing the operating system interfaces. -*/ -#if defined(SQLITE_FORCE_OS_TRACE) || defined(SQLITE_TEST) || \ - (defined(SQLITE_DEBUG) && SQLITE_OS_WIN) - extern int sqlite3OSTrace; -# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X -# define SQLITE_HAVE_OS_TRACE -#else -# define OSTRACE(X) -# undef SQLITE_HAVE_OS_TRACE -#endif - -/* -** Is the sqlite3ErrName() function needed in the build? Currently, -** it is needed by "mutex_w32.c" (when debugging), "os_win.c" (when -** OSTRACE is enabled), and by several "test*.c" files (which are -** compiled using SQLITE_TEST). -*/ -#if defined(SQLITE_HAVE_OS_TRACE) || defined(SQLITE_TEST) || \ - (defined(SQLITE_DEBUG) && SQLITE_OS_WIN) -# define SQLITE_NEED_ERR_NAME -#else -# undef SQLITE_NEED_ERR_NAME -#endif - -/* -** SQLITE_ENABLE_EXPLAIN_COMMENTS is incompatible with SQLITE_OMIT_EXPLAIN -*/ -#ifdef SQLITE_OMIT_EXPLAIN -# undef SQLITE_ENABLE_EXPLAIN_COMMENTS -#endif - -/* -** Return true (non-zero) if the input is an 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. These hints could, -** in theory, be used by the compiler to generate better code, but -** currently they are just comments for human readers. -*/ -#define likely(X) (X) -#define unlikely(X) (X) - -#include "hash.h" -#include "parse.h" -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <assert.h> -#include <stddef.h> - -/* -** Use a macro to replace memcpy() if compiled with SQLITE_INLINE_MEMCPY. -** This allows better measurements of where memcpy() is used when running -** cachegrind. But this macro version of memcpy() is very slow so it -** should not be used in production. This is a performance measurement -** hack only. -*/ -#ifdef SQLITE_INLINE_MEMCPY -# define memcpy(D,S,N) {char*xxd=(char*)(D);const char*xxs=(const char*)(S);\ - int xxn=(N);while(xxn-->0)*(xxd++)=*(xxs++);} -#endif - -/* -** 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 4 -#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 - -/* -** If no value has been provided for SQLITE_MAX_WORKER_THREADS, or if -** SQLITE_TEMP_STORE is set to 3 (never use temporary files), set it -** to zero. -*/ -#if SQLITE_TEMP_STORE==3 || SQLITE_THREADSAFE==0 -# undef SQLITE_MAX_WORKER_THREADS -# define SQLITE_MAX_WORKER_THREADS 0 -#endif -#ifndef SQLITE_MAX_WORKER_THREADS -# define SQLITE_MAX_WORKER_THREADS 8 -#endif -#ifndef SQLITE_DEFAULT_WORKER_THREADS -# define SQLITE_DEFAULT_WORKER_THREADS 0 -#endif -#if SQLITE_DEFAULT_WORKER_THREADS>SQLITE_MAX_WORKER_THREADS -# undef SQLITE_MAX_WORKER_THREADS -# define SQLITE_MAX_WORKER_THREADS SQLITE_DEFAULT_WORKER_THREADS -#endif - -/* -** The default initial allocation for the pagecache when using separate -** pagecaches for each database connection. A positive number is the -** number of pages. A negative number N translations means that a buffer -** of -1024*N bytes is allocated and used for as many pages as it will hold. -** -** The default value of "20" was choosen to minimize the run-time of the -** speedtest1 test program with options: --shrink-memory --reprepare -*/ -#ifndef SQLITE_DEFAULT_PCACHE_INITSZ -# define SQLITE_DEFAULT_PCACHE_INITSZ 20 -#endif - -/* -** Default value for the SQLITE_CONFIG_SORTERREF_SIZE option. -*/ -#ifndef SQLITE_DEFAULT_SORTERREF_SIZE -# define SQLITE_DEFAULT_SORTERREF_SIZE 0x7fffffff -#endif - -/* -** The compile-time options SQLITE_MMAP_READWRITE and -** SQLITE_ENABLE_BATCH_ATOMIC_WRITE are not compatible with one another. -** You must choose one or the other (or neither) but not both. -*/ -#if defined(SQLITE_MMAP_READWRITE) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) -#error Cannot use both SQLITE_MMAP_READWRITE and SQLITE_ENABLE_BATCH_ATOMIC_WRITE -#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 - -/* -** Macros to compute minimum and maximum of two numbers. -*/ -#ifndef MIN -# define MIN(A,B) ((A)<(B)?(A):(B)) -#endif -#ifndef MAX -# define MAX(A,B) ((A)>(B)?(A):(B)) -#endif - -/* -** Swap two objects of type TYPE. -*/ -#define SWAP(TYPE,A,B) {TYPE t=A; A=B; B=t;} - -/* -** 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) - -/* -** The datatype used to store estimates of the number of rows in a -** table or index. This is an unsigned integer type. For 99.9% of -** the world, a 32-bit integer is sufficient. But a 64-bit integer -** can be used at compile-time if desired. -*/ -#ifdef SQLITE_64BIT_STATS - typedef u64 tRowcnt; /* 64-bit only if requested at compile-time */ -#else - typedef u32 tRowcnt; /* 32-bit is the default */ -#endif - -/* -** Estimated quantities used for query planning are stored as 16-bit -** logarithms. For quantity X, the value stored is 10*log2(X). This -** gives a possible range of values of approximately 1.0e986 to 1e-986. -** But the allowed values are "grainy". Not every value is representable. -** For example, quantities 16 and 17 are both represented by a LogEst -** of 40. However, since LogEst quantities are suppose to be estimates, -** not exact values, this imprecision is not a problem. -** -** "LogEst" is short for "Logarithmic Estimate". -** -** Examples: -** 1 -> 0 20 -> 43 10000 -> 132 -** 2 -> 10 25 -> 46 25000 -> 146 -** 3 -> 16 100 -> 66 1000000 -> 199 -** 4 -> 20 1000 -> 99 1048576 -> 200 -** 10 -> 33 1024 -> 100 4294967296 -> 320 -** -** The LogEst can be negative to indicate fractional values. -** Examples: -** -** 0.5 -> -10 0.1 -> -33 0.0625 -> -40 -*/ -typedef INT16_TYPE LogEst; - -/* -** Set the SQLITE_PTRSIZE macro to the number of bytes in a pointer -*/ -#ifndef SQLITE_PTRSIZE -# if defined(__SIZEOF_POINTER__) -# define SQLITE_PTRSIZE __SIZEOF_POINTER__ -# elif defined(i386) || defined(__i386__) || defined(_M_IX86) || \ - defined(_M_ARM) || defined(__arm__) || defined(__x86) -# define SQLITE_PTRSIZE 4 -# else -# define SQLITE_PTRSIZE 8 -# endif -#endif - -/* The uptr type is an unsigned integer large enough to hold a pointer -*/ -#if defined(HAVE_STDINT_H) - typedef uintptr_t uptr; -#elif SQLITE_PTRSIZE==4 - typedef u32 uptr; -#else - typedef u64 uptr; -#endif - -/* -** The SQLITE_WITHIN(P,S,E) macro checks to see if pointer P points to -** something between S (inclusive) and E (exclusive). -** -** In other words, S is a buffer and E is a pointer to the first byte after -** the end of buffer S. This macro returns true if P points to something -** contained within the buffer S. -*/ -#define SQLITE_WITHIN(P,S,E) (((uptr)(P)>=(uptr)(S))&&((uptr)(P)<(uptr)(E))) - - -/* -** Macros to determine whether the machine is big or little endian, -** and whether or not that determination is run-time or compile-time. -** -** For best performance, an attempt is made to guess at the byte-order -** using C-preprocessor macros. If that is unsuccessful, or if -** -DSQLITE_BYTEORDER=0 is set, then byte-order is determined -** at run-time. -*/ -#ifndef SQLITE_BYTEORDER -# if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ - defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ - defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ - defined(__arm__) -# define SQLITE_BYTEORDER 1234 -# elif defined(sparc) || defined(__ppc__) -# define SQLITE_BYTEORDER 4321 -# else -# define SQLITE_BYTEORDER 0 -# endif -#endif -#if SQLITE_BYTEORDER==4321 -# define SQLITE_BIGENDIAN 1 -# define SQLITE_LITTLEENDIAN 0 -# define SQLITE_UTF16NATIVE SQLITE_UTF16BE -#elif SQLITE_BYTEORDER==1234 -# define SQLITE_BIGENDIAN 0 -# define SQLITE_LITTLEENDIAN 1 -# define SQLITE_UTF16NATIVE SQLITE_UTF16LE -#else -# ifdef SQLITE_AMALGAMATION - const int sqlite3one = 1; -# else - extern const int sqlite3one; -# endif -# 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() implementation 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 - -/* -** Disable MMAP on platforms where it is known to not work -*/ -#if defined(__OpenBSD__) || defined(__QNXNTO__) -# undef SQLITE_MAX_MMAP_SIZE -# define SQLITE_MAX_MMAP_SIZE 0 -#endif - -/* -** Default maximum size of memory used by memory-mapped I/O in the VFS -*/ -#ifdef __APPLE__ -# include <TargetConditionals.h> -#endif -#ifndef SQLITE_MAX_MMAP_SIZE -# if defined(__linux__) \ - || defined(_WIN32) \ - || (defined(__APPLE__) && defined(__MACH__)) \ - || defined(__sun) \ - || defined(__FreeBSD__) \ - || defined(__DragonFly__) -# define SQLITE_MAX_MMAP_SIZE 0x7fff0000 /* 2147418112 */ -# else -# define SQLITE_MAX_MMAP_SIZE 0 -# endif -#endif - -/* -** The default MMAP_SIZE is zero on all platforms. Or, even if a larger -** default MMAP_SIZE is specified at compile-time, make sure that it does -** not exceed the maximum mmap size. -*/ -#ifndef SQLITE_DEFAULT_MMAP_SIZE -# define SQLITE_DEFAULT_MMAP_SIZE 0 -#endif -#if SQLITE_DEFAULT_MMAP_SIZE>SQLITE_MAX_MMAP_SIZE -# undef SQLITE_DEFAULT_MMAP_SIZE -# define SQLITE_DEFAULT_MMAP_SIZE SQLITE_MAX_MMAP_SIZE -#endif - -/* -** Only one of SQLITE_ENABLE_STAT3 or SQLITE_ENABLE_STAT4 can be defined. -** Priority is given to SQLITE_ENABLE_STAT4. If either are defined, also -** define SQLITE_ENABLE_STAT3_OR_STAT4 -*/ -#ifdef SQLITE_ENABLE_STAT4 -# undef SQLITE_ENABLE_STAT3 -# define SQLITE_ENABLE_STAT3_OR_STAT4 1 -#elif SQLITE_ENABLE_STAT3 -# define SQLITE_ENABLE_STAT3_OR_STAT4 1 -#elif SQLITE_ENABLE_STAT3_OR_STAT4 -# undef SQLITE_ENABLE_STAT3_OR_STAT4 -#endif - -/* -** SELECTTRACE_ENABLED will be either 1 or 0 depending on whether or not -** the Select query generator tracing logic is turned on. -*/ -#if defined(SQLITE_ENABLE_SELECTTRACE) -# define SELECTTRACE_ENABLED 1 -#else -# define SELECTTRACE_ENABLED 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 (*xBusyHandler)(void *,int); /* The busy callback */ - void *pBusyArg; /* First arg to busy callback */ - int nBusy; /* Incremented with each busy call */ - u8 bExtraFileArg; /* Include sqlite3_file as callback arg */ -}; - -/* -** 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]))) - -/* -** Determine if the argument is a power of two -*/ -#define IsPowerOfTwo(X) (((X)&((X)-1))==0) - -/* -** The following value as a destructor means to use sqlite3DbFree(). -** The sqlite3DbFree() routine requires two parameters instead of the -** one parameter that destructors normally want. So we have to introduce -** this magic value that the code knows to handle differently. Any -** pointer will work here as long as it is distinct from SQLITE_STATIC -** and SQLITE_TRANSIENT. -*/ -#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3MallocSize) - -/* -** 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 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 PreUpdate PreUpdate; -typedef struct PrintfArguments PrintfArguments; -typedef struct RowSet RowSet; -typedef struct Savepoint Savepoint; -typedef struct Select Select; -typedef struct SQLiteThread SQLiteThread; -typedef struct SelectDest SelectDest; -typedef struct SrcList SrcList; -typedef struct sqlite3_str StrAccum; /* Internal alias for sqlite3_str */ -typedef struct Table Table; -typedef struct TableLock TableLock; -typedef struct Token Token; -typedef struct TreeView TreeView; -typedef struct Trigger Trigger; -typedef struct TriggerPrg TriggerPrg; -typedef struct TriggerStep TriggerStep; -typedef struct UnpackedRecord UnpackedRecord; -typedef struct Upsert Upsert; -typedef struct VTable VTable; -typedef struct VtabCtx VtabCtx; -typedef struct Walker Walker; -typedef struct WhereInfo WhereInfo; -typedef struct With With; - -/* A VList object records a mapping between parameters/variables/wildcards -** in the SQL statement (such as $abc, @pqr, or :xyz) and the integer -** variable number associated with that parameter. See the format description -** on the sqlite3VListAdd() routine for more information. A VList is really -** just an array of integers. -*/ -typedef int VList; - -/* -** 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" - -/* The SQLITE_EXTRA_DURABLE compile-time option used to set the default -** synchronous setting to EXTRA. It is no longer supported. -*/ -#ifdef SQLITE_EXTRA_DURABLE -# warning Use SQLITE_DEFAULT_SYNCHRONOUS=3 instead of SQLITE_EXTRA_DURABLE -# define SQLITE_DEFAULT_SYNCHRONOUS 3 -#endif - -/* -** Default synchronous levels. -** -** Note that (for historcal reasons) the PAGER_SYNCHRONOUS_* macros differ -** from the SQLITE_DEFAULT_SYNCHRONOUS value by 1. -** -** PAGER_SYNCHRONOUS DEFAULT_SYNCHRONOUS -** OFF 1 0 -** NORMAL 2 1 -** FULL 3 2 -** EXTRA 4 3 -** -** The "PRAGMA synchronous" statement also uses the zero-based numbers. -** In other words, the zero-based numbers are used for all external interfaces -** and the one-based values are used internally. -*/ -#ifndef SQLITE_DEFAULT_SYNCHRONOUS -# define SQLITE_DEFAULT_SYNCHRONOUS 2 -#endif -#ifndef SQLITE_DEFAULT_WAL_SYNCHRONOUS -# define SQLITE_DEFAULT_WAL_SYNCHRONOUS SQLITE_DEFAULT_SYNCHRONOUS -#endif - -/* -** Each database file to be accessed by the system is an instance -** of the following structure. There are normally two of these structures -** in the sqlite.aDb[] array. aDb[0] is the main database file and -** aDb[1] is the database file used to hold temporary tables. Additional -** databases may be attached. -*/ -struct Db { - char *zDbSName; /* Name of this database. (schema name, not filename) */ - Btree *pBt; /* The B*Tree structure for this database file */ - u8 safety_level; /* How aggressive at syncing data to disk */ - u8 bSyncSet; /* True if "PRAGMA synchronous=N" has been run */ - 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, only 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 schemaFlags; /* 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->schemaFlags&(P))==(P)) -#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->schemaFlags&(P))!=0) -#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->schemaFlags|=(P) -#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->schemaFlags&=~(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) */ -#define DB_ResetWanted 0x0008 /* Reset the schema when nSchemaLock==0 */ - -/* -** The number of different kinds of things that can be limited -** using the sqlite3_limit() interface. -*/ -#define SQLITE_N_LIMIT (SQLITE_LIMIT_WORKER_THREADS+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 { - u32 bDisable; /* Only operate the lookaside when zero */ - u16 sz; /* Size of each buffer in bytes */ - u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */ - u32 nSlot; /* Number of lookaside slots allocated */ - u32 anStat[3]; /* 0: hits. 1: size misses. 2: full misses */ - LookasideSlot *pInit; /* List of buffers not previously used */ - 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 built-in function definitions. (Application-defined -** functions use a regular table table from hash.h.) -** -** Hash each FuncDef structure into one of the FuncDefHash.a[] slots. -** Collisions are on the FuncDef.u.pHash chain. -*/ -#define SQLITE_FUNC_HASH_SZ 23 -struct FuncDefHash { - FuncDef *a[SQLITE_FUNC_HASH_SZ]; /* Hash table for functions */ -}; - -#ifdef SQLITE_USER_AUTHENTICATION -/* -** Information held in the "sqlite3" database connection object and used -** to manage user authentication. -*/ -typedef struct sqlite3_userauth sqlite3_userauth; -struct sqlite3_userauth { - u8 authLevel; /* Current authentication level */ - int nAuthPW; /* Size of the zAuthPW in bytes */ - char *zAuthPW; /* Password used to authenticate */ - char *zAuthUser; /* User name used to authenticate */ -}; - -/* Allowed values for sqlite3_userauth.authLevel */ -#define UAUTH_Unknown 0 /* Authentication not yet checked */ -#define UAUTH_Fail 1 /* User authentication failed */ -#define UAUTH_User 2 /* Authenticated as a normal user */ -#define UAUTH_Admin 3 /* Authenticated as an administrator */ - -/* Functions used only by user authorization logic */ -int sqlite3UserAuthTable(const char*); -int sqlite3UserAuthCheckLogin(sqlite3*,const char*,u8*); -void sqlite3UserAuthInit(sqlite3*); -void sqlite3CryptFunc(sqlite3_context*,int,sqlite3_value**); - -#endif /* SQLITE_USER_AUTHENTICATION */ - -/* -** typedef for the authorization callback function. -*/ -#ifdef SQLITE_USER_AUTHENTICATION - typedef int (*sqlite3_xauth)(void*,int,const char*,const char*,const char*, - const char*, const char*); -#else - typedef int (*sqlite3_xauth)(void*,int,const char*,const char*,const char*, - const char*); -#endif - -#ifndef SQLITE_OMIT_DEPRECATED -/* This is an extra SQLITE_TRACE macro that indicates "legacy" tracing -** in the style of sqlite3_trace() -*/ -#define SQLITE_TRACE_LEGACY 0x80 -#else -#define SQLITE_TRACE_LEGACY 0 -#endif /* SQLITE_OMIT_DEPRECATED */ - - -/* -** Each database connection is an instance of the following structure. -*/ -struct sqlite3 { - sqlite3_vfs *pVfs; /* OS Interface */ - struct Vdbe *pVdbe; /* List of active virtual machines */ - CollSeq *pDfltColl; /* The default collating sequence (BINARY) */ - sqlite3_mutex *mutex; /* Connection mutex */ - Db *aDb; /* All backends */ - int nDb; /* Number of backends currently in use */ - u32 mDbFlags; /* flags recording internal state */ - u32 flags; /* flags settable by pragmas. See below */ - i64 lastRowid; /* ROWID of most recent insert (see above) */ - i64 szMmap; /* Default mmap_size setting */ - u32 nSchemaLock; /* Do not reset the schema when non-zero */ - unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */ - int errCode; /* Most recent error code (SQLITE_*) */ - int errMask; /* & result codes with this before returning */ - int iSysErrno; /* Errno value from last system error */ - u16 dbOptFlags; /* Flags to enable/disable optimizations */ - u8 enc; /* Text encoding */ - 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 bBenignMalloc; /* Do not require OOMs if true */ - 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 */ - u8 vtabOnConflict; /* Value to return for s3_vtab_on_conflict() */ - u8 isTransactionSavepoint; /* True if the outermost savepoint is a TS */ - u8 mTrace; /* zero or more SQLITE_TRACE flags */ - u8 noSharedCache; /* True if no shared-cache backends */ - u8 nSqlExec; /* Number of pending OP_SqlExec opcodes */ - int nextPagesize; /* Pagesize after VACUUM if >0 */ - u32 magic; /* Magic number for detect library misuse */ - int nChange; /* Value returned by sqlite3_changes() */ - int nTotalChange; /* Value returned by sqlite3_total_changes() */ - int aLimit[SQLITE_N_LIMIT]; /* Limits */ - int nMaxSorterMmap; /* Maximum size of regions mapped by sorter */ - struct sqlite3InitInfo { /* Information used during initialization */ - int newTnum; /* Rootpage of table being initialized */ - u8 iDb; /* Which db file is being initialized */ - u8 busy; /* TRUE if currently initializing */ - unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */ - unsigned imposterTable : 1; /* Building an imposter table */ - unsigned reopenMemdb : 1; /* ATTACH is really a reopen using MemDB */ - } init; - int nVdbeActive; /* Number of VDBEs currently running */ - int nVdbeRead; /* Number of active VDBEs that read or write */ - int nVdbeWrite; /* Number of active VDBEs that read and write */ - int nVdbeExec; /* Number of nested calls to VdbeExec() */ - int nVDestroy; /* Number of active OP_VDestroy operations */ - int nExtension; /* Number of loaded extensions */ - void **aExtension; /* Array of shared library handles */ - int (*xTrace)(u32,void*,void*,void*); /* 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); -#ifdef SQLITE_ENABLE_PREUPDATE_HOOK - void *pPreUpdateArg; /* First argument to xPreUpdateCallback */ - void (*xPreUpdateCallback)( /* Registered using sqlite3_preupdate_hook() */ - void*,sqlite3*,int,char const*,char const*,sqlite3_int64,sqlite3_int64 - ); - PreUpdate *pPreUpdate; /* Context for active pre-update callback */ -#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ -#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 */ - union { - volatile int isInterrupted; /* True if sqlite3_interrupt has been called */ - double notUsed1; /* Spacer */ - } u1; - Lookaside lookaside; /* Lookaside malloc configuration */ -#ifndef SQLITE_OMIT_AUTHORIZATION - sqlite3_xauth xAuth; /* 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 */ - unsigned nProgressOps; /* Number of opcodes for progress callback */ -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - int nVTrans; /* Allocated size of aVTrans */ - Hash aModule; /* populated by sqlite3_create_module() */ - VtabCtx *pVtabCtx; /* Context for active vtab connect/create */ - VTable **aVTrans; /* Virtual tables with open transactions */ - VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */ -#endif - Hash aFunc; /* Hash table of connection functions */ - Hash aCollSeq; /* All collating sequences */ - BusyHandler busyHandler; /* Busy callback */ - Db aDbStatic[2]; /* Static space for the 2 default backends */ - Savepoint *pSavepoint; /* List of active savepoints */ - int busyTimeout; /* Busy handler timeout, in msec */ - int nSavepoint; /* Number of non-transaction savepoints */ - int nStatement; /* Number of nested statement-transactions */ - i64 nDeferredCons; /* Net deferred constraints this transaction. */ - i64 nDeferredImmCons; /* Net deferred immediate constraints */ - 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 -#ifdef SQLITE_USER_AUTHENTICATION - sqlite3_userauth auth; /* User authentication information */ -#endif -}; - -/* -** A macro to discover the encoding of a database. -*/ -#define SCHEMA_ENC(db) ((db)->aDb[0].pSchema->enc) -#define ENC(db) ((db)->enc) - -/* -** Possible values for the sqlite3.flags. -** -** Value constraints (enforced via assert()): -** SQLITE_FullFSync == PAGER_FULLFSYNC -** SQLITE_CkptFullFSync == PAGER_CKPT_FULLFSYNC -** SQLITE_CacheSpill == PAGER_CACHE_SPILL -*/ -#define SQLITE_WriteSchema 0x00000001 /* OK to update SQLITE_MASTER */ -#define SQLITE_LegacyFileFmt 0x00000002 /* Create new databases in format 1 */ -#define SQLITE_FullColNames 0x00000004 /* Show full column names on SELECT */ -#define SQLITE_FullFSync 0x00000008 /* Use full fsync on the backend */ -#define SQLITE_CkptFullFSync 0x00000010 /* Use full fsync for checkpoint */ -#define SQLITE_CacheSpill 0x00000020 /* OK to spill pager cache */ -#define SQLITE_ShortColNames 0x00000040 /* Show short columns names */ -#define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */ - /* DELETE, or UPDATE and return */ - /* the count using a callback. */ -#define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */ - /* result set is empty */ -#define SQLITE_IgnoreChecks 0x00000200 /* Do not enforce check constraints */ -#define SQLITE_ReadUncommit 0x00000400 /* READ UNCOMMITTED in shared-cache */ -#define SQLITE_NoCkptOnClose 0x00000800 /* No checkpoint on close()/DETACH */ -#define SQLITE_ReverseOrder 0x00001000 /* Reverse unordered SELECTs */ -#define SQLITE_RecTriggers 0x00002000 /* Enable recursive triggers */ -#define SQLITE_ForeignKeys 0x00004000 /* Enforce foreign key constraints */ -#define SQLITE_AutoIndex 0x00008000 /* Enable automatic indexes */ -#define SQLITE_LoadExtension 0x00010000 /* Enable load_extension */ -#define SQLITE_LoadExtFunc 0x00020000 /* Enable load_extension() SQL func */ -#define SQLITE_EnableTrigger 0x00040000 /* True to enable triggers */ -#define SQLITE_DeferFKs 0x00080000 /* Defer all FK constraints */ -#define SQLITE_QueryOnly 0x00100000 /* Disable database changes */ -#define SQLITE_CellSizeCk 0x00200000 /* Check btree cell sizes on load */ -#define SQLITE_Fts3Tokenizer 0x00400000 /* Enable fts3_tokenizer(2) */ -#define SQLITE_EnableQPSG 0x00800000 /* Query Planner Stability Guarantee*/ -#define SQLITE_TriggerEQP 0x01000000 /* Show trigger EXPLAIN QUERY PLAN */ -#define SQLITE_ResetDatabase 0x02000000 /* Reset the database */ - -/* Flags used only if debugging */ -#ifdef SQLITE_DEBUG -#define SQLITE_SqlTrace 0x08000000 /* Debug print SQL as it executes */ -#define SQLITE_VdbeListing 0x10000000 /* Debug listings of VDBE programs */ -#define SQLITE_VdbeTrace 0x20000000 /* True to trace VDBE execution */ -#define SQLITE_VdbeAddopTrace 0x40000000 /* Trace sqlite3VdbeAddOp() calls */ -#define SQLITE_VdbeEQP 0x80000000 /* Debug EXPLAIN QUERY PLAN */ -#endif - -/* -** Allowed values for sqlite3.mDbFlags -*/ -#define DBFLAG_SchemaChange 0x0001 /* Uncommitted Hash table changes */ -#define DBFLAG_PreferBuiltin 0x0002 /* Preference to built-in funcs */ -#define DBFLAG_Vacuum 0x0004 /* Currently in a VACUUM */ -#define DBFLAG_SchemaKnownOk 0x0008 /* Schema is known to be valid */ - -/* -** Bits of the sqlite3.dbOptFlags field that are used by the -** sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS,...) interface to -** selectively disable various optimizations. -*/ -#define SQLITE_QueryFlattener 0x0001 /* Query flattening */ -#define SQLITE_ColumnCache 0x0002 /* Column cache */ -#define SQLITE_GroupByOrder 0x0004 /* GROUPBY cover of ORDERBY */ -#define SQLITE_FactorOutConst 0x0008 /* Constant factoring */ -#define SQLITE_DistinctOpt 0x0010 /* DISTINCT using indexes */ -#define SQLITE_CoverIdxScan 0x0020 /* Covering index scans */ -#define SQLITE_OrderByIdxJoin 0x0040 /* ORDER BY of joins via index */ -#define SQLITE_Transitive 0x0080 /* Transitive constraints */ -#define SQLITE_OmitNoopJoin 0x0100 /* Omit unused tables in joins */ -#define SQLITE_CountOfView 0x0200 /* The count-of-view optimization */ -#define SQLITE_CursorHints 0x0400 /* Add OP_CursorHint opcodes */ -#define SQLITE_Stat34 0x0800 /* Use STAT3 or STAT4 data */ - /* TH3 expects the Stat34 ^^^^^^ value to be 0x0800. Don't change it */ -#define SQLITE_PushDown 0x1000 /* The push-down optimization */ -#define SQLITE_SimplifyJoin 0x2000 /* Convert LEFT JOIN to JOIN */ -#define SQLITE_AllOpts 0xffff /* All optimizations */ - -/* -** Macros for testing whether or not optimizations are enabled or disabled. -*/ -#define OptimizationDisabled(db, mask) (((db)->dbOptFlags&(mask))!=0) -#define OptimizationEnabled(db, mask) (((db)->dbOptFlags&(mask))==0) - -/* -** Return true if it OK to factor constant expressions into the initialization -** code. The argument is a Parse object for the code generator. -*/ -#define ConstFactorOk(P) ((P)->okConstFactor) - -/* -** 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 */ -#define SQLITE_MAGIC_ZOMBIE 0x64cffc7f /* Close with last statement close */ - -/* -** Each SQL function is defined by an instance of the following -** structure. For global built-in functions (ex: substr(), max(), count()) -** a pointer to this structure is held in the sqlite3BuiltinFunctions object. -** For per-connection application-defined functions, a pointer to this -** structure is held in the db->aHash hash table. -** -** The u.pHash field is used by the global built-ins. The u.pDestructor -** field is used by per-connection app-def functions. -*/ -struct FuncDef { - i8 nArg; /* Number of arguments. -1 means unlimited */ - u16 funcFlags; /* Some combination of SQLITE_FUNC_* */ - void *pUserData; /* User data parameter */ - FuncDef *pNext; /* Next function with same name */ - void (*xSFunc)(sqlite3_context*,int,sqlite3_value**); /* func or agg-step */ - void (*xFinalize)(sqlite3_context*); /* Agg finalizer */ - const char *zName; /* SQL name of the function. */ - union { - FuncDef *pHash; /* Next with a different name but the same hash */ - FuncDestructor *pDestructor; /* Reference counted destructor function */ - } u; -}; - -/* -** 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. Note that the _LENGTH and _TYPEOF -** values must correspond to OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG. And -** SQLITE_FUNC_CONSTANT must be the same as SQLITE_DETERMINISTIC. There -** are assert() statements in the code to verify this. -** -** Value constraints (enforced via assert()): -** SQLITE_FUNC_MINMAX == NC_MinMaxAgg == SF_MinMaxAgg -** SQLITE_FUNC_LENGTH == OPFLAG_LENGTHARG -** SQLITE_FUNC_TYPEOF == OPFLAG_TYPEOFARG -** SQLITE_FUNC_CONSTANT == SQLITE_DETERMINISTIC from the API -** SQLITE_FUNC_ENCMASK depends on SQLITE_UTF* macros in the API -*/ -#define SQLITE_FUNC_ENCMASK 0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */ -#define SQLITE_FUNC_LIKE 0x0004 /* Candidate for the LIKE optimization */ -#define SQLITE_FUNC_CASE 0x0008 /* Case-sensitive LIKE-type function */ -#define SQLITE_FUNC_EPHEM 0x0010 /* Ephemeral. Delete with VDBE */ -#define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/ -#define SQLITE_FUNC_LENGTH 0x0040 /* Built-in length() function */ -#define SQLITE_FUNC_TYPEOF 0x0080 /* Built-in typeof() function */ -#define SQLITE_FUNC_COUNT 0x0100 /* Built-in count(*) aggregate */ -#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */ -#define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */ -#define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */ -#define SQLITE_FUNC_MINMAX 0x1000 /* True for min() and max() aggregates */ -#define SQLITE_FUNC_SLOCHNG 0x2000 /* "Slow Change". Value constant during a - ** single query - might change over time */ -#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */ -#define SQLITE_FUNC_OFFSET 0x8000 /* Built-in sqlite_offset() 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. -** -** VFUNCTION(zName, nArg, iArg, bNC, xFunc) -** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag. -** -** DFUNCTION(zName, nArg, iArg, bNC, xFunc) -** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and -** adds the SQLITE_FUNC_SLOCHNG flag. Used for date & time functions -** and functions like sqlite_version() that can change, but not during -** a single query. The iArg is ignored. The user-data is always set -** to a NULL pointer. The bNC parameter is not used. -** -** PURE_DATE(zName, nArg, iArg, bNC, xFunc) -** Used for "pure" date/time functions, this macro is like DFUNCTION -** except that it does set the SQLITE_FUNC_CONSTANT flags. iArg is -** ignored and the user-data for these functions is set to an -** arbitrary non-NULL pointer. The bNC parameter is not used. -** -** 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_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } -#define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } -#define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8, \ - 0, 0, xFunc, 0, #zName, {0} } -#define PURE_DATE(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|SQLITE_FUNC_CONSTANT, \ - (void*)&sqlite3Config, 0, xFunc, 0, #zName, {0} } -#define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \ - {nArg,SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } -#define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - pArg, 0, xFunc, 0, #zName, } -#define LIKEFUNC(zName, nArg, arg, flags) \ - {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \ - (void *)arg, 0, likeFunc, 0, #zName, {0} } -#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal) \ - {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName, {0}} -#define AGGREGATE2(zName, nArg, arg, nc, xStep, xFinal, extraFlags) \ - {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|extraFlags, \ - SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName, {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 */ - i64 nDeferredImmCons; /* Number of deferred imm fk. */ - 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 */ - Table *pEpoTab; /* Eponymous table for this module */ -}; - -/* -** information about each column of an SQL table is held in an instance -** of this structure. -*/ -struct Column { - char *zName; /* Name of this column, \000, then the type */ - Expr *pDflt; /* Default value of this column */ - char *zColl; /* Collating sequence. If NULL, use the default */ - u8 notNull; /* An OE_ code for handling a NOT NULL constraint */ - char affinity; /* One of the SQLITE_AFF_... values */ - u8 szEst; /* Estimated size of value in this column. sizeof(INT)==1 */ - u8 colFlags; /* Boolean properties. See COLFLAG_ defines below */ -}; - -/* Allowed values for Column.colFlags: -*/ -#define COLFLAG_PRIMKEY 0x0001 /* Column is part of the primary key */ -#define COLFLAG_HIDDEN 0x0002 /* A hidden column in a virtual table */ -#define COLFLAG_HASTYPE 0x0004 /* Type name follows column name */ -#define COLFLAG_UNIQUE 0x0008 /* Column def contains "UNIQUE" or "PK" */ -#define COLFLAG_SORTERREF 0x0010 /* Use sorter-refs with this column */ - -/* -** 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. -** -** If CollSeq.xCmp is 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() */ - void *pUser; /* First argument to xCmp() */ - int (*xCmp)(void*,int, const void*, int, const void*); - void (*xDel)(void*); /* Destructor for pUser */ -}; - -/* -** 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 */ -#define SQLITE_SO_UNDEFINED -1 /* No sort order specified */ - -/* -** 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. And the BLOB type is first. -*/ -#define SQLITE_AFF_BLOB 'A' -#define SQLITE_AFF_TEXT '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 0x47 - -/* -** Additional bit values that can be ORed with an affinity without -** changing the affinity. -** -** The SQLITE_NOTNULL flag is a combination of NULLEQ and JUMPIFNULL. -** It causes an assert() to fire if either operand to a comparison -** operator is NULL. It is added to certain comparison operators to -** prove that the operands are always NOT NULL. -*/ -#define SQLITE_KEEPNULL 0x08 /* Used by vector == or <> */ -#define SQLITE_JUMPIFNULL 0x10 /* jumps if either operand is NULL */ -#define SQLITE_STOREP2 0x20 /* Store result in reg[P2] rather than jump */ -#define SQLITE_NULLEQ 0x80 /* NULL=NULL */ -#define SQLITE_NOTNULL 0x90 /* Assert that operands are never 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 */ - u8 bConstraint; /* True if constraints are supported */ - int iSavepoint; /* Depth of the SAVEPOINT stack */ - VTable *pNext; /* Next in linked list (see above) */ -}; - -/* -** The schema for each SQL table and view is represented in memory -** by an instance of the following structure. -*/ -struct Table { - char *zName; /* Name of the table or view */ - Column *aCol; /* Information about each column */ - Index *pIndex; /* List of SQL indexes on this table. */ - Select *pSelect; /* NULL for tables. Points to definition if a view. */ - FKey *pFKey; /* Linked list of all foreign keys in this table */ - char *zColAff; /* String defining the affinity of each column */ - ExprList *pCheck; /* All CHECK constraints */ - /* ... also used as column name list in a VIEW */ - int tnum; /* Root BTree page for this table */ - u32 nTabRef; /* Number of pointers to this Table */ - u32 tabFlags; /* Mask of TF_* values */ - i16 iPKey; /* If not negative, use aCol[iPKey] as the rowid */ - i16 nCol; /* Number of columns in this table */ - LogEst nRowLogEst; /* Estimated rows in table - from sqlite_stat1 table */ - LogEst szTabRow; /* Estimated size of each table row in bytes */ -#ifdef SQLITE_ENABLE_COSTMULT - LogEst costMult; /* Cost multiplier for using this table */ -#endif - u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ -#ifndef SQLITE_OMIT_ALTERTABLE - int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */ -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - int nModuleArg; /* Number of arguments to the module */ - char **azModuleArg; /* 0: module 1: schema 2: vtab name 3...: args */ - VTable *pVTable; /* List of VTable objects. */ -#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 Table.tabFlags. -** -** TF_OOOHidden applies to tables or view that have hidden columns that are -** followed by non-hidden columns. Example: "CREATE VIRTUAL TABLE x USING -** vtab1(a HIDDEN, b);". Since "b" is a non-hidden column but "a" is hidden, -** the TF_OOOHidden attribute would apply in this case. Such tables require -** special handling during INSERT processing. -*/ -#define TF_Readonly 0x0001 /* Read-only system table */ -#define TF_Ephemeral 0x0002 /* An ephemeral table */ -#define TF_HasPrimaryKey 0x0004 /* Table has a primary key */ -#define TF_Autoincrement 0x0008 /* Integer primary key is autoincrement */ -#define TF_HasStat1 0x0010 /* nRowLogEst set from sqlite_stat1 */ -#define TF_WithoutRowid 0x0020 /* No rowid. PRIMARY KEY is the key */ -#define TF_NoVisibleRowid 0x0040 /* No user-visible "rowid" column */ -#define TF_OOOHidden 0x0080 /* Out-of-Order hidden columns */ -#define TF_StatsUsed 0x0100 /* Query planner decisions affected by - ** Index.aiRowLogEst[] values */ -#define TF_HasNotNull 0x0200 /* Contains NOT NULL constraints */ - -/* -** 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)->nModuleArg) -#else -# define IsVirtual(X) 0 -#endif - -/* -** Macros to determine if a column is hidden. IsOrdinaryHiddenColumn() -** only works for non-virtual tables (ordinary tables and views) and is -** always false unless SQLITE_ENABLE_HIDDEN_COLUMNS is defined. The -** IsHiddenColumn() macro is general purpose. -*/ -#if defined(SQLITE_ENABLE_HIDDEN_COLUMNS) -# define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) -# define IsOrdinaryHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) -#elif !defined(SQLITE_OMIT_VIRTUALTABLE) -# define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) -# define IsOrdinaryHiddenColumn(X) 0 -#else -# define IsHiddenColumn(X) 0 -# define IsOrdinaryHiddenColumn(X) 0 -#endif - - -/* Does the table have a rowid */ -#define HasRowid(X) (((X)->tabFlags & TF_WithoutRowid)==0) -#define VisibleRowid(X) (((X)->tabFlags & TF_NoVisibleRowid)==0) - -/* -** 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". -** Equivalent names: -** -** from-table == child-table -** to-table == parent-table -** -** 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. -** -** The list of all parents for child Table X is held at X.pFKey. -** -** A list of all children for a table named Z (which might not even exist) -** is held in Schema.fkeyHash with a hash key of Z. -*/ -struct FKey { - Table *pFrom; /* Table containing the REFERENCES clause (aka: Child) */ - FKey *pNextFrom; /* Next FKey with the same in pFrom. Next parent of pFrom */ - char *zTo; /* Name of table that the key points to (aka: Parent) */ - FKey *pNextTo; /* Next with the same zTo. Next child of zTo. */ - FKey *pPrevTo; /* Previous with the same 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 NULL use PRIMARY KEY */ - } aCol[1]; /* One entry for each of nCol columns */ -}; - -/* -** 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_Update 6 /* Process as a DO UPDATE in an upsert */ -#define OE_Restrict 7 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */ -#define OE_SetNull 8 /* Set the foreign key value to NULL */ -#define OE_SetDflt 9 /* Set the foreign key value to its default */ -#define OE_Cascade 10 /* Cascade the changes */ -#define OE_Default 11 /* 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. -** -** Note that aSortOrder[] and aColl[] have nField+1 slots. There -** are nField slots for the columns of an index then one extra slot -** for the rowid at the end. -*/ -struct KeyInfo { - u32 nRef; /* Number of references to this KeyInfo object */ - u8 enc; /* Text encoding - one of the SQLITE_UTF* values */ - u16 nKeyField; /* Number of key columns in the index */ - u16 nAllField; /* Total columns, including key plus others */ - sqlite3 *db; /* The database connection */ - u8 *aSortOrder; /* Sort order for each column. */ - CollSeq *aColl[1]; /* Collating sequence for each term of the key */ -}; - -/* -** This object holds a record which has been parsed out into individual -** fields, for the purposes of doing a comparison. -** -** 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. -** -** An instance of this object serves as a "key" for doing a search on -** an index b+tree. The goal of the search is to find the entry that -** is closed to the key described by this object. This object might hold -** just a prefix of the key. The number of fields is given by -** pKeyInfo->nField. -** -** The r1 and r2 fields are the values to return if this key is less than -** or greater than a key in the btree, respectively. These are normally -** -1 and +1 respectively, but might be inverted to +1 and -1 if the b-tree -** is in DESC order. -** -** The key comparison functions actually return default_rc when they find -** an equals comparison. default_rc can be -1, 0, or +1. If there are -** multiple entries in the b-tree with the same key (when only looking -** at the first pKeyInfo->nFields,) then default_rc can be set to -1 to -** cause the search to find the last match, or +1 to cause the search to -** find the first match. -** -** The key comparison functions will set eqSeen to true if they ever -** get and equal results when comparing this structure to a b-tree record. -** When default_rc!=0, the search might end up on the record immediately -** before the first match or immediately after the last match. The -** eqSeen field will indicate whether or not an exact match exists in the -** b-tree. -*/ -struct UnpackedRecord { - KeyInfo *pKeyInfo; /* Collation and sort-order information */ - Mem *aMem; /* Values */ - u16 nField; /* Number of entries in apMem[] */ - i8 default_rc; /* Comparison result if keys are equal */ - u8 errCode; /* Error detected by xRecordCompare (CORRUPT or NOMEM) */ - i8 r1; /* Value to return if (lhs < rhs) */ - i8 r2; /* Value to return if (lhs > rhs) */ - u8 eqSeen; /* True if an equality comparison has been seen */ -}; - - -/* -** 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. -** -** While parsing a CREATE TABLE or CREATE INDEX statement in order to -** generate VDBE code (as opposed to parsing one read from an sqlite_master -** table as part of parsing an existing database schema), transient instances -** of this structure may be created. In this case the Index.tnum variable is -** used to store the address of a VDBE instruction, not a database page -** number (it cannot - the database page is not allocated until the VDBE -** program is executed). See convertToWithoutRowidTable() for details. -*/ -struct Index { - char *zName; /* Name of this index */ - i16 *aiColumn; /* Which columns are used by this index. 1st is 0 */ - LogEst *aiRowLogEst; /* From ANALYZE: Est. rows selected by each column */ - Table *pTable; /* The SQL table being indexed */ - 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; /* for each column: True==DESC, False==ASC */ - const char **azColl; /* Array of collation sequence names for index */ - Expr *pPartIdxWhere; /* WHERE clause for partial indices */ - ExprList *aColExpr; /* Column expressions */ - int tnum; /* DB Page containing root of this index */ - LogEst szIdxRow; /* Estimated average row size in bytes */ - u16 nKeyCol; /* Number of columns forming the key */ - u16 nColumn; /* Number of columns stored in the index */ - u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ - unsigned idxType:2; /* 1==UNIQUE, 2==PRIMARY KEY, 0==CREATE INDEX */ - unsigned bUnordered:1; /* Use this index for == or IN queries only */ - unsigned uniqNotNull:1; /* True if UNIQUE and NOT NULL for all columns */ - unsigned isResized:1; /* True if resizeIndexObject() has been called */ - unsigned isCovering:1; /* True if this is a covering index */ - unsigned noSkipScan:1; /* Do not try to use skip-scan if true */ - unsigned hasStat1:1; /* aiRowLogEst values come from sqlite_stat1 */ - unsigned bNoQuery:1; /* Do not use this index to optimize queries */ -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - int nSample; /* Number of elements in aSample[] */ - int nSampleCol; /* Size of IndexSample.anEq[] and so on */ - tRowcnt *aAvgEq; /* Average nEq values for keys not in aSample */ - IndexSample *aSample; /* Samples of the left-most key */ - tRowcnt *aiRowEst; /* Non-logarithmic stat1 data for this index */ - tRowcnt nRowEst0; /* Non-logarithmic number of rows in the index */ -#endif -}; - -/* -** Allowed values for Index.idxType -*/ -#define SQLITE_IDXTYPE_APPDEF 0 /* Created using CREATE INDEX */ -#define SQLITE_IDXTYPE_UNIQUE 1 /* Implements a UNIQUE constraint */ -#define SQLITE_IDXTYPE_PRIMARYKEY 2 /* Is the PRIMARY KEY for the table */ - -/* Return true if index X is a PRIMARY KEY index */ -#define IsPrimaryKeyIndex(X) ((X)->idxType==SQLITE_IDXTYPE_PRIMARYKEY) - -/* Return true if index X is a UNIQUE index */ -#define IsUniqueIndex(X) ((X)->onError!=OE_None) - -/* The Index.aiColumn[] values are normally positive integer. But -** there are some negative values that have special meaning: -*/ -#define XN_ROWID (-1) /* Indexed column is the rowid */ -#define XN_EXPR (-2) /* Indexed column is an expression */ - -/* -** Each sample stored in the sqlite_stat3 table is represented in memory -** using a structure of this type. See documentation at the top of the -** analyze.c source file for additional information. -*/ -struct IndexSample { - void *p; /* Pointer to sampled record */ - int n; /* Size of record in bytes */ - tRowcnt *anEq; /* Est. number of rows where the key equals this sample */ - tRowcnt *anLt; /* Est. number of rows where key is less than this sample */ - tRowcnt *anDLt; /* Est. number of distinct keys less than this sample */ -}; - -/* -** 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 */ - int sortingIdxPTab; /* Cursor number of pseudo-table */ - int nSortingColumn; /* Number of columns in the sorting index */ - int mnReg, mxReg; /* Range of registers allocated for aCol and aFunc */ - ExprList *pGroupBy; /* The group by clause */ - 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 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[] */ -}; - -/* -** 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 */ - u32 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; /* op = IN, EXISTS, SELECT, CASE, FUNCTION, BETWEEN */ - Select *pSelect; /* EP_xIsSelect and op = IN, EXISTS, SELECT */ - } x; - - /* 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. - *********************************************************************/ - -#if SQLITE_MAX_EXPR_DEPTH>0 - int nHeight; /* Height of the tree headed by this node */ -#endif - int iTable; /* TK_COLUMN: cursor number of table holding column - ** TK_REGISTER: register number - ** TK_TRIGGER: 1 -> new, 0 -> old - ** EP_Unlikely: 134217728 times likelihood - ** TK_SELECT: 1st register of result vector */ - ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid. - ** TK_VARIABLE: variable number (always >= 1). - ** TK_SELECT_COLUMN: column of the result vector */ - i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */ - i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */ - u8 op2; /* TK_REGISTER: original value of Expr.op - ** TK_COLUMN: the value of p5 for OP_Column - ** TK_AGG_FUNCTION: nesting depth */ - AggInfo *pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */ - Table *pTab; /* Table for TK_COLUMN expressions. Can be NULL - ** for a column of an index on an expression */ -}; - -/* -** The following are the meanings of bits in the Expr.flags field. -*/ -#define EP_FromJoin 0x000001 /* Originates in ON/USING clause of outer join */ -#define EP_Agg 0x000002 /* Contains one or more aggregate functions */ -#define EP_HasFunc 0x000004 /* Contains one or more functions of any kind */ - /* 0x000008 // available for use */ -#define EP_Distinct 0x000010 /* Aggregate function with DISTINCT keyword */ -#define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */ -#define EP_DblQuoted 0x000040 /* token.z was originally in "..." */ -#define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */ -#define EP_Collate 0x000100 /* Tree contains a TK_COLLATE operator */ -#define EP_Generic 0x000200 /* Ignore COLLATE or affinity on this tree */ -#define EP_IntValue 0x000400 /* Integer value contained in u.iValue */ -#define EP_xIsSelect 0x000800 /* x.pSelect is valid (otherwise x.pList is) */ -#define EP_Skip 0x001000 /* COLLATE, AS, or UNLIKELY */ -#define EP_Reduced 0x002000 /* Expr struct EXPR_REDUCEDSIZE bytes only */ -#define EP_TokenOnly 0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */ -#define EP_Static 0x008000 /* Held in memory not obtained from malloc() */ -#define EP_MemToken 0x010000 /* Need to sqlite3DbFree() Expr.zToken */ -#define EP_NoReduce 0x020000 /* Cannot EXPRDUP_REDUCE this Expr */ -#define EP_Unlikely 0x040000 /* unlikely() or likelihood() function */ -#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */ -#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */ -#define EP_Subquery 0x200000 /* Tree contains a TK_SELECT operator */ -#define EP_Alias 0x400000 /* Is an alias for a result set column */ -#define EP_Leaf 0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */ - -/* -** The EP_Propagate mask is a set of properties that automatically propagate -** upwards into parent nodes. -*/ -#define EP_Propagate (EP_Collate|EP_Subquery|EP_HasFunc) - -/* -** These macros can be used to test, set, or clear bits in the -** Expr.flags field. -*/ -#define ExprHasProperty(E,P) (((E)->flags&(P))!=0) -#define ExprHasAllProperty(E,P) (((E)->flags&(P))==(P)) -#define ExprSetProperty(E,P) (E)->flags|=(P) -#define ExprClearProperty(E,P) (E)->flags&=~(P) - -/* The ExprSetVVAProperty() macro is used for Verification, Validation, -** and Accreditation only. It works like ExprSetProperty() during VVA -** processes but is a no-op for delivery. -*/ -#ifdef SQLITE_DEBUG -# define ExprSetVVAProperty(E,P) (E)->flags|=(P) -#else -# define ExprSetVVAProperty(E,P) -#endif - -/* -** 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. -** -** By default the Expr.zSpan field holds a human-readable description of -** the expression that is used in the generation of error messages and -** column labels. In this case, Expr.zSpan is typically the text of a -** column expression as it exists in a SELECT statement. However, if -** the bSpanIsTab flag is set, then zSpan is overloaded to mean the name -** of the result column in the form: DATABASE.TABLE.COLUMN. This later -** form is used for name resolution with nested FROM clauses. -*/ -struct ExprList { - int nExpr; /* Number of expressions on the list */ - struct ExprList_item { /* For each expression in the list */ - Expr *pExpr; /* The parse tree for this expression */ - char *zName; /* Token associated with this expression */ - char *zSpan; /* Original text of the expression */ - u8 sortOrder; /* 1 for DESC or 0 for ASC */ - unsigned done :1; /* A flag to indicate when processing is finished */ - unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */ - unsigned reusable :1; /* Constant expression is reusable */ - unsigned bSorterRef :1; /* Defer evaluation until after sorting */ - union { - struct { - u16 iOrderByCol; /* For ORDER BY, column number in result set */ - u16 iAlias; /* Index into Parse.aAlias[] for zName */ - } x; - int iConstExprReg; /* Register in which Expr value is cached */ - } u; - } a[1]; /* One slot for each expression in the list */ -}; - -/* -** 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 */ -}; - -/* -** 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. -*/ -#ifdef SQLITE_BITMASK_TYPE - typedef SQLITE_BITMASK_TYPE Bitmask; -#else - typedef u64 Bitmask; -#endif - -/* -** The number of bits in a Bitmask. "BMS" means "BitMask Size". -*/ -#define BMS ((int)(sizeof(Bitmask)*8)) - -/* -** A bit in a Bitmask -*/ -#define MASKBIT(n) (((Bitmask)1)<<(n)) -#define MASKBIT32(n) (((unsigned int)1)<<(n)) -#define ALLBITS ((Bitmask)-1) - -/* -** 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 { - int nSrc; /* Number of tables or subqueries in the FROM clause */ - u32 nAlloc; /* Number of entries allocated in a[] below */ - struct SrcList_item { - Schema *pSchema; /* Schema to which this item is fixed */ - 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 */ - int addrFillSub; /* Address of subroutine to manifest a subquery */ - int regReturn; /* Register holding return address of addrFillSub */ - int regResult; /* Registers holding results of a co-routine */ - struct { - u8 jointype; /* Type of join between this table and the previous */ - unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ - unsigned isIndexedBy :1; /* True if there is an INDEXED BY clause */ - unsigned isTabFunc :1; /* True if table-valued-function syntax */ - unsigned isCorrelated :1; /* True if sub-query is correlated */ - unsigned viaCoroutine :1; /* Implemented as a co-routine */ - unsigned isRecursive :1; /* True for recursive reference in WITH */ - } fg; - 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 */ - union { - char *zIndexedBy; /* Identifier from "INDEXED BY <zIndex>" clause */ - ExprList *pFuncArg; /* Arguments to table-valued-function */ - } u1; - Index *pIBIndex; /* Index structure corresponding to u1.zIndexedBy */ - } 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 */ - - -/* -** Flags appropriate for the wctrlFlags parameter of sqlite3WhereBegin() -** and the WhereInfo.wctrlFlags member. -** -** Value constraints (enforced via assert()): -** WHERE_USE_LIMIT == SF_FixedLimit -*/ -#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_ONEPASS_MULTIROW 0x0008 /* ONEPASS is ok with multiple rows */ -#define WHERE_DUPLICATES_OK 0x0010 /* Ok to return a row more than once */ -#define WHERE_OR_SUBCLAUSE 0x0020 /* Processing a sub-WHERE as part of - ** the OR optimization */ -#define WHERE_GROUPBY 0x0040 /* pOrderBy is really a GROUP BY */ -#define WHERE_DISTINCTBY 0x0080 /* pOrderby is really a DISTINCT clause */ -#define WHERE_WANT_DISTINCT 0x0100 /* All output needs to be distinct */ -#define WHERE_SORTBYGROUP 0x0200 /* Support sqlite3WhereIsSorted() */ -#define WHERE_SEEK_TABLE 0x0400 /* Do not defer seeks on main table */ -#define WHERE_ORDERBY_LIMIT 0x0800 /* ORDERBY+LIMIT on the inner loop */ -#define WHERE_SEEK_UNIQ_TABLE 0x1000 /* Do not defer seeks if unique */ - /* 0x2000 not currently used */ -#define WHERE_USE_LIMIT 0x4000 /* Use the LIMIT in cost estimates */ - /* 0x8000 not currently used */ - -/* Allowed return values from sqlite3WhereIsDistinct() -*/ -#define WHERE_DISTINCT_NOOP 0 /* DISTINCT keyword not used */ -#define WHERE_DISTINCT_UNIQUE 1 /* No duplicates */ -#define WHERE_DISTINCT_ORDERED 2 /* All duplicates are adjacent */ -#define WHERE_DISTINCT_UNORDERED 3 /* Duplicates are scattered */ - -/* -** 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 */ - union { - ExprList *pEList; /* Optional list of result-set columns */ - AggInfo *pAggInfo; /* Information about aggregates at this level */ - Upsert *pUpsert; /* ON CONFLICT clause information from an upsert */ - } uNC; - NameContext *pNext; /* Next outer name context. NULL for outermost */ - int nRef; /* Number of names resolved by this context */ - int nErr; /* Number of errors encountered while resolving names */ - u16 ncFlags; /* Zero or more NC_* flags defined below */ -}; - -/* -** Allowed values for the NameContext, ncFlags field. -** -** Value constraints (all checked via assert()): -** NC_HasAgg == SF_HasAgg -** NC_MinMaxAgg == SF_MinMaxAgg == SQLITE_FUNC_MINMAX -** -*/ -#define NC_AllowAgg 0x0001 /* Aggregate functions are allowed here */ -#define NC_PartIdx 0x0002 /* True if resolving a partial index WHERE */ -#define NC_IsCheck 0x0004 /* True if resolving names in a CHECK constraint */ -#define NC_InAggFunc 0x0008 /* True if analyzing arguments to an agg func */ -#define NC_HasAgg 0x0010 /* One or more aggregate functions seen */ -#define NC_IdxExpr 0x0020 /* True if resolving columns of CREATE INDEX */ -#define NC_VarSelect 0x0040 /* A correlated subquery has been seen */ -#define NC_UEList 0x0080 /* True if uNC.pEList is used */ -#define NC_UAggInfo 0x0100 /* True if uNC.pAggInfo is used */ -#define NC_UUpsert 0x0200 /* True if uNC.pUpsert is used */ -#define NC_MinMaxAgg 0x1000 /* min/max aggregates seen. See note above */ -#define NC_Complex 0x2000 /* True if a function or subquery seen */ - -/* -** An instance of the following object describes a single ON CONFLICT -** clause in an upsert. -** -** The pUpsertTarget field is only set if the ON CONFLICT clause includes -** conflict-target clause. (In "ON CONFLICT(a,b)" the "(a,b)" is the -** conflict-target clause.) The pUpsertTargetWhere is the optional -** WHERE clause used to identify partial unique indexes. -** -** pUpsertSet is the list of column=expr terms of the UPDATE statement. -** The pUpsertSet field is NULL for a ON CONFLICT DO NOTHING. The -** pUpsertWhere is the WHERE clause for the UPDATE and is NULL if the -** WHERE clause is omitted. -*/ -struct Upsert { - ExprList *pUpsertTarget; /* Optional description of conflicting index */ - Expr *pUpsertTargetWhere; /* WHERE clause for partial index targets */ - ExprList *pUpsertSet; /* The SET clause from an ON CONFLICT UPDATE */ - Expr *pUpsertWhere; /* WHERE clause for the ON CONFLICT UPDATE */ - /* The fields above comprise the parse tree for the upsert clause. - ** The fields below are used to transfer information from the INSERT - ** processing down into the UPDATE processing while generating code. - ** Upsert owns the memory allocated above, but not the memory below. */ - Index *pUpsertIdx; /* Constraint that pUpsertTarget identifies */ - SrcList *pUpsertSrc; /* Table to be updated */ - int regData; /* First register holding array of VALUES */ - int iDataCur; /* Index of the data cursor */ - int iIdxCur; /* Index of the first index cursor */ -}; - -/* -** An instance of the following structure contains all information -** needed to generate code for a single SELECT statement. -** -** See the header comment on the computeLimitRegisters() routine for a -** detailed description of the meaning of the iLimit and iOffset fields. -** -** 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 addrOpenEphm[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 */ - LogEst nSelectRow; /* Estimated number of result rows */ - u32 selFlags; /* Various SF_* values */ - int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */ -#if SELECTTRACE_ENABLED - char zSelName[12]; /* Symbolic name of this SELECT use for debugging */ -#endif - int addrOpenEphm[2]; /* OP_OpenEphem opcodes related to this select */ - 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 */ - Expr *pLimit; /* LIMIT expression. NULL means not used. */ - With *pWith; /* WITH clause attached to this select. Or NULL. */ -}; - -/* -** Allowed values for Select.selFlags. The "SF" prefix stands for -** "Select Flag". -** -** Value constraints (all checked via assert()) -** SF_HasAgg == NC_HasAgg -** SF_MinMaxAgg == NC_MinMaxAgg == SQLITE_FUNC_MINMAX -** SF_FixedLimit == WHERE_USE_LIMIT -*/ -#define SF_Distinct 0x00001 /* Output should be DISTINCT */ -#define SF_All 0x00002 /* Includes the ALL keyword */ -#define SF_Resolved 0x00004 /* Identifiers have been resolved */ -#define SF_Aggregate 0x00008 /* Contains agg functions or a GROUP BY */ -#define SF_HasAgg 0x00010 /* Contains aggregate functions */ -#define SF_UsesEphemeral 0x00020 /* Uses the OpenEphemeral opcode */ -#define SF_Expanded 0x00040 /* sqlite3SelectExpand() called on this */ -#define SF_HasTypeInfo 0x00080 /* FROM subqueries have Table metadata */ -#define SF_Compound 0x00100 /* Part of a compound query */ -#define SF_Values 0x00200 /* Synthesized from VALUES clause */ -#define SF_MultiValue 0x00400 /* Single VALUES term with multiple rows */ -#define SF_NestedFrom 0x00800 /* Part of a parenthesized FROM clause */ -#define SF_MinMaxAgg 0x01000 /* Aggregate containing min() or max() */ -#define SF_Recursive 0x02000 /* The recursive part of a recursive CTE */ -#define SF_FixedLimit 0x04000 /* nSelectRow set by a constant LIMIT */ -#define SF_MaybeConvert 0x08000 /* Need convertCompoundSelectToSubquery() */ -#define SF_Converted 0x10000 /* By convertCompoundSelectToSubquery() */ -#define SF_IncludeHidden 0x20000 /* Include hidden columns in output */ -#define SF_ComplexResult 0x40000 /* Result contains subquery or function */ - -/* -** The results of a SELECT can be distributed in several ways, as defined -** by one of the following macros. The "SRT" prefix means "SELECT Result -** Type". -** -** SRT_Union Store results as a key in a temporary index -** identified by pDest->iSDParm. -** -** SRT_Except Remove results from the temporary index pDest->iSDParm. -** -** SRT_Exists Store a 1 in memory cell pDest->iSDParm if the result -** set is not empty. -** -** SRT_Discard Throw the results away. This is used by SELECT -** statements within triggers whose only purpose is -** the side-effects of functions. -** -** All of the above are free to ignore their ORDER BY clause. Those that -** follow must honor the ORDER BY clause. -** -** SRT_Output Generate a row of output (using the OP_ResultRow -** opcode) for each row in the result set. -** -** SRT_Mem Only valid if the result is a single column. -** Store the first column of the first result row -** in register pDest->iSDParm then abandon the rest -** of the query. This destination implies "LIMIT 1". -** -** SRT_Set The result must be a single column. Store each -** row of result as the key in table pDest->iSDParm. -** Apply the affinity pDest->affSdst before storing -** results. Used to implement "IN (SELECT ...)". -** -** SRT_EphemTab Create an temporary table pDest->iSDParm and store -** the result there. The cursor is left open after -** returning. This is like SRT_Table except that -** this destination uses OP_OpenEphemeral to create -** the table first. -** -** SRT_Coroutine Generate a co-routine that returns a new row of -** results each time it is invoked. The entry point -** of the co-routine is stored in register pDest->iSDParm -** and the result row is stored in pDest->nDest registers -** starting with pDest->iSdst. -** -** SRT_Table Store results in temporary table pDest->iSDParm. -** SRT_Fifo This is like SRT_EphemTab except that the table -** is assumed to already be open. SRT_Fifo has -** the additional property of being able to ignore -** the ORDER BY clause. -** -** SRT_DistFifo Store results in a temporary table pDest->iSDParm. -** But also use temporary table pDest->iSDParm+1 as -** a record of all prior results and ignore any duplicate -** rows. Name means: "Distinct Fifo". -** -** SRT_Queue Store results in priority queue pDest->iSDParm (really -** an index). Append a sequence number so that all entries -** are distinct. -** -** SRT_DistQueue Store results in priority queue pDest->iSDParm only if -** the same record has never been stored before. The -** index at pDest->iSDParm+1 hold all prior stores. -*/ -#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 */ -#define SRT_Fifo 5 /* Store result as data with an automatic rowid */ -#define SRT_DistFifo 6 /* Like SRT_Fifo, but unique results only */ -#define SRT_Queue 7 /* Store result in an queue */ -#define SRT_DistQueue 8 /* Like SRT_Queue, but unique results only */ - -/* The ORDER BY clause is ignored for all of the above */ -#define IgnorableOrderby(X) ((X->eDest)<=SRT_DistQueue) - -#define SRT_Output 9 /* Output each row of result */ -#define SRT_Mem 10 /* Store result in a memory cell */ -#define SRT_Set 11 /* Store results as keys in an index */ -#define SRT_EphemTab 12 /* Create transient tab and store like SRT_Table */ -#define SRT_Coroutine 13 /* Generate a single row of result */ -#define SRT_Table 14 /* Store result as data with an automatic rowid */ - -/* -** An instance of this object describes where to put of the results of -** a SELECT statement. -*/ -struct SelectDest { - u8 eDest; /* How to dispose of the results. On of SRT_* above. */ - int iSDParm; /* A parameter used by the eDest disposal method */ - int iSdst; /* Base register where results are written */ - int nSdst; /* Number of registers allocated */ - char *zAffSdst; /* Affinity used when eDest==SRT_Set */ - ExprList *pOrderBy; /* Key columns for SRT_Queue and SRT_DistQueue */ -}; - -/* -** 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 done 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 */ - TriggerPrg *pNext; /* Next entry in Parse.pTriggerPrg list */ - SubProgram *pProgram; /* Program implementing pTrigger/orconf */ - int orconf; /* Default ON CONFLICT policy */ - u32 aColmask[2]; /* Masks of old.*, new.* columns accessed */ -}; - -/* -** The yDbMask datatype for the bitmask of all attached databases. -*/ -#if SQLITE_MAX_ATTACHED>30 - typedef unsigned char yDbMask[(SQLITE_MAX_ATTACHED+9)/8]; -# define DbMaskTest(M,I) (((M)[(I)/8]&(1<<((I)&7)))!=0) -# define DbMaskZero(M) memset((M),0,sizeof(M)) -# define DbMaskSet(M,I) (M)[(I)/8]|=(1<<((I)&7)) -# define DbMaskAllZero(M) sqlite3DbMaskAllZero(M) -# define DbMaskNonZero(M) (sqlite3DbMaskAllZero(M)==0) -#else - typedef unsigned int yDbMask; -# define DbMaskTest(M,I) (((M)&(((yDbMask)1)<<(I)))!=0) -# define DbMaskZero(M) (M)=0 -# define DbMaskSet(M,I) (M)|=(((yDbMask)1)<<(I)) -# define DbMaskAllZero(M) (M)==0 -# define DbMaskNonZero(M) (M)!=0 -#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 */ - char *zErrMsg; /* An error message */ - Vdbe *pVdbe; /* An engine for executing database bytecode */ - int rc; /* Return code from execution */ - u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */ - u8 checkSchema; /* Causes schema cookie check after an error */ - u8 nested; /* Number of nested calls to the parser/code generator */ - u8 nTempReg; /* Number of temporary registers in aTempReg[] */ - u8 isMultiWrite; /* True if statement may modify/insert multiple rows */ - u8 mayAbort; /* True if statement may throw an ABORT exception */ - u8 hasCompound; /* Need to invoke convertCompoundSelectToSubquery() */ - u8 okConstFactor; /* OK to factor out constants */ - u8 disableLookaside; /* Number of times lookaside has been disabled */ - u8 nColCache; /* Number of entries in aColCache[] */ - 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 nOpAlloc; /* Number of slots allocated for Vdbe.aOp[] */ - int szOpAlloc; /* Bytes of memory space allocated for Vdbe.aOp[] */ - int iSelfTab; /* Table associated with an index on expr, or negative - ** of the base register during check-constraint eval */ - int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */ - int iCacheCnt; /* Counter used to generate aColCache[].lru values */ - int nLabel; /* Number of labels used */ - int *aLabel; /* Space to hold the labels */ - ExprList *pConstExpr;/* Constant expressions */ - Token constraintName;/* Name of the constraint currently being parsed */ - yDbMask writeMask; /* Start a write transaction on these databases */ - yDbMask cookieMask; /* Bitmask of schema verified databases */ - int regRowid; /* Register holding rowid of CREATE TABLE entry */ - int regRoot; /* Register holding root page number for new objects */ - int nMaxArg; /* Max args passed to user function by sub-program */ -#if SELECTTRACE_ENABLED - int nSelect; /* Number of SELECT statements seen */ -#endif -#ifndef SQLITE_OMIT_SHARED_CACHE - int nTableLock; /* Number of locks in aTableLock */ - TableLock *aTableLock; /* Required table locks for shared-cache mode */ -#endif - AutoincInfo *pAinc; /* Information about AUTOINCREMENT counters */ - Parse *pToplevel; /* Parse structure for main program (or NULL) */ - Table *pTriggerTab; /* Table triggers are being coded for */ - int addrCrTab; /* Address of OP_CreateBtree opcode on CREATE TABLE */ - u32 nQueryLoop; /* Est number of iterations of a query (10*log2(N)) */ - 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 */ - - /************************************************************************** - ** Fields above must be initialized to zero. The fields that follow, - ** down to the beginning of the recursive section, do not need to be - ** initialized as they will be set before being used. The boundary is - ** determined by offsetof(Parse,aColCache). - **************************************************************************/ - - struct yColCache { - int iTable; /* Table cursor number */ - i16 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 */ - int aTempReg[8]; /* Holding area for temporary registers */ - Token sNameToken; /* Token with unqualified schema object name */ - - /************************************************************************ - ** Above is constant between recursions. Below is reset before and after - ** each recursion. The boundary between these two regions is determined - ** using offsetof(Parse,sLastToken) so the sLastToken field must be the - ** first field in the recursive region. - ************************************************************************/ - - Token sLastToken; /* The last token parsed */ - ynVar nVar; /* Number of '?' variables seen in the SQL so far */ - u8 iPkSortOrder; /* ASC or DESC for INTEGER PRIMARY KEY */ - u8 explain; /* True if the EXPLAIN flag is found on the query */ -#ifndef SQLITE_OMIT_VIRTUALTABLE - u8 declareVtab; /* True if inside sqlite3_declare_vtab() */ - int nVtabLock; /* Number of virtual tables to lock */ -#endif - int nHeight; /* Expression tree height of current sub-select */ -#ifndef SQLITE_OMIT_EXPLAIN - int addrExplain; /* Address of current OP_Explain opcode */ -#endif - VList *pVList; /* Mapping between variable names and numbers */ - Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */ - 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 */ - Table **apVtabLock; /* Pointer to virtual tables needing locking */ -#endif - Table *pZombieTab; /* List of Table objects to delete after code gen */ - TriggerPrg *pTriggerPrg; /* Linked list of coded triggers */ - With *pWith; /* Current WITH clause, or NULL */ - With *pWithToFree; /* Free this WITH object at the end of the parse */ -}; - -/* -** Sizes and pointers of various parts of the Parse object. -*/ -#define PARSE_HDR_SZ offsetof(Parse,aColCache) /* Recursive part w/o aColCache*/ -#define PARSE_RECURSE_SZ offsetof(Parse,sLastToken) /* Recursive part */ -#define PARSE_TAIL_SZ (sizeof(Parse)-PARSE_RECURSE_SZ) /* Non-recursive part */ -#define PARSE_TAIL(X) (((char*)(X))+PARSE_RECURSE_SZ) /* Pointer to tail */ - -/* -** Return true if currently inside an sqlite3_declare_vtab() call. -*/ -#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 various opcodes. -** -** Value constraints (enforced via assert()): -** OPFLAG_LENGTHARG == SQLITE_FUNC_LENGTH -** OPFLAG_TYPEOFARG == SQLITE_FUNC_TYPEOF -** OPFLAG_BULKCSR == BTREE_BULKLOAD -** OPFLAG_SEEKEQ == BTREE_SEEK_EQ -** OPFLAG_FORDELETE == BTREE_FORDELETE -** OPFLAG_SAVEPOSITION == BTREE_SAVEPOSITION -** OPFLAG_AUXDELETE == BTREE_AUXDELETE -*/ -#define OPFLAG_NCHANGE 0x01 /* OP_Insert: Set to update db->nChange */ - /* Also used in P2 (not P5) of OP_Delete */ -#define OPFLAG_EPHEM 0x01 /* OP_Column: Ephemeral output is ok */ -#define OPFLAG_LASTROWID 0x20 /* 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_ISNOOP 0x40 /* OP_Delete does pre-update-hook only */ -#define OPFLAG_LENGTHARG 0x40 /* OP_Column only used for length() */ -#define OPFLAG_TYPEOFARG 0x80 /* OP_Column only used for typeof() */ -#define OPFLAG_BULKCSR 0x01 /* OP_Open** used to open bulk cursor */ -#define OPFLAG_SEEKEQ 0x02 /* OP_Open** cursor uses EQ seek only */ -#define OPFLAG_FORDELETE 0x08 /* OP_Open should use BTREE_FORDELETE */ -#define OPFLAG_P2ISREG 0x10 /* P2 to OP_Open** is a register number */ -#define OPFLAG_PERMUTE 0x01 /* OP_Compare: use the permutation */ -#define OPFLAG_SAVEPOSITION 0x02 /* OP_Delete/Insert: save cursor pos */ -#define OPFLAG_AUXDELETE 0x04 /* OP_Delete: index in a DELETE op */ -#define OPFLAG_NOCHNG_MAGIC 0x6d /* OP_MakeRecord: serialtype 10 is ok */ - -/* - * 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. - * zTarget -> Dequoted 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) - * zTarget -> Dequoted name of the table to delete from. - * pWhere -> The WHERE clause of the DELETE statement if one is specified. - * Otherwise NULL. - * - * (op == TK_UPDATE) - * zTarget -> Dequoted name of the table to update. - * 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 statement or RHS of INSERT INTO SELECT ... */ - char *zTarget; /* Target table for DELETE, UPDATE, INSERT */ - Expr *pWhere; /* The WHERE clause for DELETE or UPDATE steps */ - ExprList *pExprList; /* SET clause for UPDATE */ - IdList *pIdList; /* Column names for INSERT */ - Upsert *pUpsert; /* Upsert clauses on an INSERT */ - char *zSpan; /* Original SQL text of this command */ - 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 */ - Schema *pSchema; /* Fix items to this schema */ - int bVarOnly; /* Check for variable references only */ - 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 sqlite3_str { - sqlite3 *db; /* Optional database for lookaside. Can be NULL */ - char *zText; /* The string collected so far */ - u32 nAlloc; /* Amount of space allocated in zText */ - u32 mxAlloc; /* Maximum allowed allocation. 0 for no malloc usage */ - u32 nChar; /* Length of the string so far */ - u8 accError; /* SQLITE_NOMEM or SQLITE_TOOBIG */ - u8 printfFlags; /* SQLITE_PRINTF flags below */ -}; -#define SQLITE_PRINTF_INTERNAL 0x01 /* Internal-use-only converters allowed */ -#define SQLITE_PRINTF_SQLFUNC 0x02 /* SQL function arguments to VXPrintf */ -#define SQLITE_PRINTF_MALLOCED 0x04 /* True if xText is allocated space */ - -#define isMalloced(X) (((X)->printfFlags & SQLITE_PRINTF_MALLOCED)!=0) - - -/* -** 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 */ - char **pzErrMsg; /* Error message stored here */ - int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */ - 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 bOpenUri; /* True to interpret filenames as URIs */ - int bUseCis; /* Use covering indices for full-scans */ - int bSmallMalloc; /* Avoid large memory allocations if true */ - int mxStrlen; /* Maximum string length */ - int neverCorrupt; /* Database is always well-formed */ - int szLookaside; /* Default lookaside buffer size */ - int nLookaside; /* Default lookaside buffer count */ - int nStmtSpill; /* Stmt-journal spill-to-disk threshold */ - sqlite3_mem_methods m; /* Low-level memory allocation interface */ - sqlite3_mutex_methods mutex; /* Low-level mutex interface */ - sqlite3_pcache_methods2 pcache2; /* Low-level page-cache interface */ - void *pHeap; /* Heap storage space */ - int nHeap; /* Size of pHeap[] */ - int mnReq, mxReq; /* Min and max heap requests sizes */ - sqlite3_int64 szMmap; /* mmap() space per open file */ - sqlite3_int64 mxMmap; /* Maximum value for szMmap */ - 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 */ - u32 szPma; /* Maximum Sorter PMA size */ - /* 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 */ - int nRefInitMutex; /* Number of users of pInitMutex */ - sqlite3_mutex *pInitMutex; /* Mutex used by sqlite3_initialize() */ - void (*xLog)(void*,int,const char*); /* Function for logging */ - void *pLogArg; /* First argument to xLog() */ -#ifdef SQLITE_ENABLE_SQLLOG - void(*xSqllog)(void*,sqlite3*,const char*, int); - void *pSqllogArg; -#endif -#ifdef SQLITE_VDBE_COVERAGE - /* The following callback (if not NULL) is invoked on every VDBE branch - ** operation. Set the callback using SQLITE_TESTCTRL_VDBE_COVERAGE. - */ - void (*xVdbeBranch)(void*,int iSrcLine,u8 eThis,u8 eMx); /* Callback */ - void *pVdbeBranchArg; /* 1st argument */ -#endif -#ifndef SQLITE_UNTESTABLE - int (*xTestCallback)(int); /* Invoked by sqlite3FaultSim() */ -#endif - int bLocaltimeFault; /* True to fail localtime() calls */ - int iOnceResetThreshold; /* When to reset OP_Once counters */ - u32 szSorterRef; /* Min size in bytes to use sorter-refs */ -}; - -/* -** This macro is used inside of assert() statements to indicate that -** the assert is only valid on a well-formed database. Instead of: -** -** assert( X ); -** -** One writes: -** -** assert( X || CORRUPT_DB ); -** -** CORRUPT_DB is true during normal operation. CORRUPT_DB does not indicate -** that the database is definitely corrupt, only that it might be corrupt. -** For most test cases, CORRUPT_DB is set to false using a special -** sqlite3_test_control(). This enables assert() statements to prove -** things that are always true for well-formed databases. -*/ -#define CORRUPT_DB (sqlite3Config.neverCorrupt==0) - -/* -** Context pointer passed down through the tree-walk. -*/ -struct Walker { - Parse *pParse; /* Parser context. */ - int (*xExprCallback)(Walker*, Expr*); /* Callback for expressions */ - int (*xSelectCallback)(Walker*,Select*); /* Callback for SELECTs */ - void (*xSelectCallback2)(Walker*,Select*);/* Second callback for SELECTs */ - int walkerDepth; /* Number of subqueries */ - u8 eCode; /* A small processing code */ - union { /* Extra data for callback */ - NameContext *pNC; /* Naming context */ - int n; /* A counter */ - int iCur; /* A cursor number */ - SrcList *pSrcList; /* FROM clause */ - struct SrcCount *pSrcCount; /* Counting column references */ - struct CCurHint *pCCurHint; /* Used by codeCursorHint() */ - int *aiCol; /* array of column indexes */ - struct IdxCover *pIdxCover; /* Check for index coverage */ - struct IdxExprTrans *pIdxTrans; /* Convert idxed expr to column */ - ExprList *pGroupBy; /* GROUP BY clause */ - Select *pSelect; /* HAVING to WHERE clause ctx */ - } u; -}; - -/* Forward declarations */ -int sqlite3WalkExpr(Walker*, Expr*); -int sqlite3WalkExprList(Walker*, ExprList*); -int sqlite3WalkSelect(Walker*, Select*); -int sqlite3WalkSelectExpr(Walker*, Select*); -int sqlite3WalkSelectFrom(Walker*, Select*); -int sqlite3ExprWalkNoop(Walker*, Expr*); -int sqlite3SelectWalkNoop(Walker*, Select*); -int sqlite3SelectWalkFail(Walker*, Select*); -#ifdef SQLITE_DEBUG -void sqlite3SelectWalkAssert2(Walker*, Select*); -#endif - -/* -** 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 */ - -/* -** An instance of this structure represents a set of one or more CTEs -** (common table expressions) created by a single WITH clause. -*/ -struct With { - int nCte; /* Number of CTEs in the WITH clause */ - With *pOuter; /* Containing WITH clause, or NULL */ - struct Cte { /* For each CTE in the WITH clause.... */ - char *zName; /* Name of this CTE */ - ExprList *pCols; /* List of explicit column names, or NULL */ - Select *pSelect; /* The definition of this CTE */ - const char *zCteErr; /* Error message for circular references */ - } a[1]; -}; - -#ifdef SQLITE_DEBUG -/* -** An instance of the TreeView object is used for printing the content of -** data structures on sqlite3DebugPrintf() using a tree-like view. -*/ -struct TreeView { - int iLevel; /* Which level of the tree we are on */ - u8 bLine[100]; /* Draw vertical in column i if bLine[i] is true */ -}; -#endif /* SQLITE_DEBUG */ - -/* -** 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 sqlite3ReportError(int iErr, int lineno, const char *zType); -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__) -#ifdef SQLITE_DEBUG - int sqlite3NomemError(int); - int sqlite3IoerrnomemError(int); - int sqlite3CorruptPgnoError(int,Pgno); -# define SQLITE_NOMEM_BKPT sqlite3NomemError(__LINE__) -# define SQLITE_IOERR_NOMEM_BKPT sqlite3IoerrnomemError(__LINE__) -# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P)) -#else -# define SQLITE_NOMEM_BKPT SQLITE_NOMEM -# define SQLITE_IOERR_NOMEM_BKPT SQLITE_IOERR_NOMEM -# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptError(__LINE__) -#endif - -/* -** FTS3 and FTS4 both require virtual table support -*/ -#if defined(SQLITE_OMIT_VIRTUALTABLE) -# undef SQLITE_ENABLE_FTS3 -# undef SQLITE_ENABLE_FTS4 -#endif - -/* -** FTS4 is really an extension for FTS3. It is enabled using the -** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also call -** the SQLITE_ENABLE_FTS4 macro to serve as an alias for SQLITE_ENABLE_FTS3. -*/ -#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3) -# define SQLITE_ENABLE_FTS3 1 -#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)]) -# define sqlite3Isquote(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x80) -#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)) -# define sqlite3Isquote(x) ((x)=='"'||(x)=='\''||(x)=='['||(x)=='`') -#endif -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS -int sqlite3IsIdChar(u8); -#endif - -/* -** Internal function prototypes -*/ -int sqlite3StrICmp(const char*,const char*); -int sqlite3Strlen30(const char*); -char *sqlite3ColumnType(Column*,char*); -#define sqlite3StrNICmp sqlite3_strnicmp - -int sqlite3MallocInit(void); -void sqlite3MallocEnd(void); -void *sqlite3Malloc(u64); -void *sqlite3MallocZero(u64); -void *sqlite3DbMallocZero(sqlite3*, u64); -void *sqlite3DbMallocRaw(sqlite3*, u64); -void *sqlite3DbMallocRawNN(sqlite3*, u64); -char *sqlite3DbStrDup(sqlite3*,const char*); -char *sqlite3DbStrNDup(sqlite3*,const char*, u64); -char *sqlite3DbSpanDup(sqlite3*,const char*,const char*); -void *sqlite3Realloc(void*, u64); -void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64); -void *sqlite3DbRealloc(sqlite3 *, void *, u64); -void sqlite3DbFree(sqlite3*, void*); -void sqlite3DbFreeNN(sqlite3*, void*); -int sqlite3MallocSize(void*); -int sqlite3DbMallocSize(sqlite3*, void*); -void *sqlite3PageMalloc(int); -void sqlite3PageFree(void*); -void sqlite3MemSetDefault(void); -#ifndef SQLITE_UNTESTABLE -void sqlite3BenignMallocHooks(void (*)(void), void (*)(void)); -#endif -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 - -/* Do not allow both MEMSYS5 and MEMSYS3 to be defined together. If they -** are, disable MEMSYS3 -*/ -#ifdef SQLITE_ENABLE_MEMSYS5 -const sqlite3_mem_methods *sqlite3MemGetMemsys5(void); -#undef SQLITE_ENABLE_MEMSYS3 -#endif -#ifdef SQLITE_ENABLE_MEMSYS3 -const sqlite3_mem_methods *sqlite3MemGetMemsys3(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 -#if !defined(SQLITE_MUTEX_OMIT) && !defined(SQLITE_MUTEX_NOOP) - void sqlite3MemoryBarrier(void); -#else -# define sqlite3MemoryBarrier() -#endif - -sqlite3_int64 sqlite3StatusValue(int); -void sqlite3StatusUp(int, int); -void sqlite3StatusDown(int, int); -void sqlite3StatusHighwater(int, int); -int sqlite3LookasideUsed(sqlite3*,int*); - -/* Access to mutexes used by sqlite3_status() */ -sqlite3_mutex *sqlite3Pcache1Mutex(void); -sqlite3_mutex *sqlite3MallocMutex(void); - -#if defined(SQLITE_ENABLE_MULTITHREADED_CHECKS) && !defined(SQLITE_MUTEX_OMIT) -void sqlite3MutexWarnOnContention(sqlite3_mutex*); -#else -# define sqlite3MutexWarnOnContention(x) -#endif - -#ifndef SQLITE_OMIT_FLOATING_POINT - int sqlite3IsNaN(double); -#else -# define sqlite3IsNaN(X) 0 -#endif - -/* -** An instance of the following structure holds information about SQL -** functions arguments that are the parameters to the printf() function. -*/ -struct PrintfArguments { - int nArg; /* Total number of arguments */ - int nUsed; /* Number of arguments used so far */ - sqlite3_value **apArg; /* The argument values */ -}; - -char *sqlite3MPrintf(sqlite3*,const char*, ...); -char *sqlite3VMPrintf(sqlite3*,const char*, va_list); -#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) - void sqlite3DebugPrintf(const char*, ...); -#endif -#if defined(SQLITE_TEST) - void *sqlite3TestTextToPtr(const char*); -#endif - -#if defined(SQLITE_DEBUG) - void sqlite3TreeViewExpr(TreeView*, const Expr*, u8); - void sqlite3TreeViewBareExprList(TreeView*, const ExprList*, const char*); - void sqlite3TreeViewExprList(TreeView*, const ExprList*, u8, const char*); - void sqlite3TreeViewSelect(TreeView*, const Select*, u8); - void sqlite3TreeViewWith(TreeView*, const With*, u8); -#endif - - -void sqlite3SetString(char **, sqlite3*, const char*); -void sqlite3ErrorMsg(Parse*, const char*, ...); -void sqlite3Dequote(char*); -void sqlite3TokenInit(Token*,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); -void sqlite3ClearTempRegCache(Parse*); -#ifdef SQLITE_DEBUG -int sqlite3NoTempsInRange(Parse*,int,int); -#endif -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*); -void sqlite3PExprAddSelect(Parse*, Expr*, Select*); -Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*); -Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*); -void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32); -void sqlite3ExprDelete(sqlite3*, Expr*); -ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*); -ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*); -void sqlite3ExprListSetSortOrder(ExprList*,int); -void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int); -void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*); -void sqlite3ExprListDelete(sqlite3*, ExprList*); -u32 sqlite3ExprListFlags(const ExprList*); -int sqlite3Init(sqlite3*, char**); -int sqlite3InitCallback(void*, int, char**, char**); -void sqlite3Pragma(Parse*,Token*,Token*,Token*,int); -#ifndef SQLITE_OMIT_VIRTUALTABLE -Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName); -#endif -void sqlite3ResetAllSchemasOfConnection(sqlite3*); -void sqlite3ResetOneSchema(sqlite3*,int); -void sqlite3CollapseDatabaseArray(sqlite3*); -void sqlite3CommitInternalChanges(sqlite3*); -void sqlite3DeleteColumnNames(sqlite3*,Table*); -int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**); -void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*); -Table *sqlite3ResultSetOfSelect(Parse*,Select*); -void sqlite3OpenMasterTable(Parse *, int); -Index *sqlite3PrimaryKeyIndex(Table*); -i16 sqlite3ColumnOfIndex(Index*, i16); -void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int); -#if SQLITE_ENABLE_HIDDEN_COLUMNS - void sqlite3ColumnPropertiesFromName(Table*, Column*); -#else -# define sqlite3ColumnPropertiesFromName(T,C) /* no-op */ -#endif -void sqlite3AddColumn(Parse*,Token*,Token*); -void sqlite3AddNotNull(Parse*, int); -void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int); -void sqlite3AddCheckConstraint(Parse*, Expr*); -void sqlite3AddDefaultValue(Parse*,Expr*,const char*,const char*); -void sqlite3AddCollateType(Parse*, Token*); -void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*); -int sqlite3ParseUri(const char*,const char*,unsigned int*, - sqlite3_vfs**,char**,char **); -Btree *sqlite3DbNameToBtree(sqlite3*,const char*); - -#ifdef SQLITE_UNTESTABLE -# define sqlite3FaultSim(X) SQLITE_OK -#else - int sqlite3FaultSim(int); -#endif - -Bitvec *sqlite3BitvecCreate(u32); -int sqlite3BitvecTest(Bitvec*, u32); -int sqlite3BitvecTestNotNull(Bitvec*, u32); -int sqlite3BitvecSet(Bitvec*, u32); -void sqlite3BitvecClear(Bitvec*, u32, void*); -void sqlite3BitvecDestroy(Bitvec*); -u32 sqlite3BitvecSize(Bitvec*); -#ifndef SQLITE_UNTESTABLE -int sqlite3BitvecBuiltinTest(int,int*); -#endif - -RowSet *sqlite3RowSetInit(sqlite3*, void*, unsigned int); -void sqlite3RowSetClear(RowSet*); -void sqlite3RowSetInsert(RowSet*, i64); -int sqlite3RowSetTest(RowSet*, int iBatch, i64); -int sqlite3RowSetNext(RowSet*, i64*); - -void sqlite3CreateView(Parse*,Token*,Token*,Token*,ExprList*,Select*,int,int); - -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) - int sqlite3ViewGetColumnNames(Parse*,Table*); -#else -# define sqlite3ViewGetColumnNames(A,B) 0 -#endif - -#if SQLITE_MAX_ATTACHED>30 - int sqlite3DbMaskAllZero(yDbMask); -#endif -void sqlite3DropTable(Parse*, SrcList*, int, int); -void sqlite3CodeDropTable(Parse*, Table*, 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*, Select*, IdList*, int, Upsert*); -void *sqlite3ArrayAllocate(sqlite3*,void*,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 *); -void sqlite3SrcListFuncArgs(Parse*, SrcList*, ExprList*); -int sqlite3IndexedByLookup(Parse *, struct SrcList_item *); -void sqlite3SrcListShiftJoinType(SrcList*); -void sqlite3SrcListAssignCursors(Parse*, SrcList*); -void sqlite3IdListDelete(sqlite3*, IdList*); -void sqlite3SrcListDelete(sqlite3*, SrcList*); -Index *sqlite3AllocateIndexObject(sqlite3*,i16,int,char**); -void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*, - Expr*, int, int, u8); -void sqlite3DropIndex(Parse*, SrcList*, int); -int sqlite3Select(Parse*, Select*, SelectDest*); -Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*, - Expr*,ExprList*,u32,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*,char*); -#endif -void sqlite3DeleteFrom(Parse*, SrcList*, Expr*, ExprList*, Expr*); -void sqlite3Update(Parse*, SrcList*, ExprList*,Expr*,int,ExprList*,Expr*, - Upsert*); -WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*,ExprList*,u16,int); -void sqlite3WhereEnd(WhereInfo*); -LogEst sqlite3WhereOutputRowCount(WhereInfo*); -int sqlite3WhereIsDistinct(WhereInfo*); -int sqlite3WhereIsOrdered(WhereInfo*); -int sqlite3WhereOrderedInnerLoop(WhereInfo*); -int sqlite3WhereIsSorted(WhereInfo*); -int sqlite3WhereContinueLabel(WhereInfo*); -int sqlite3WhereBreakLabel(WhereInfo*); -int sqlite3WhereOkOnePass(WhereInfo*, int*); -#define ONEPASS_OFF 0 /* Use of ONEPASS not allowed */ -#define ONEPASS_SINGLE 1 /* ONEPASS valid for a single row update */ -#define ONEPASS_MULTI 2 /* ONEPASS is valid for multiple rows */ -void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int); -int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8); -void sqlite3ExprCodeGetColumnToReg(Parse*, Table*, int, int, int); -void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int); -void sqlite3ExprCodeMove(Parse*, int, int, int); -void sqlite3ExprCacheStore(Parse*, int, int, int); -void sqlite3ExprCachePush(Parse*); -void sqlite3ExprCachePop(Parse*); -void sqlite3ExprCacheRemove(Parse*, int, int); -void sqlite3ExprCacheClear(Parse*); -void sqlite3ExprCacheAffinityChange(Parse*, int, int); -void sqlite3ExprCode(Parse*, Expr*, int); -void sqlite3ExprCodeCopy(Parse*, Expr*, int); -void sqlite3ExprCodeFactorable(Parse*, Expr*, int); -int sqlite3ExprCodeAtInit(Parse*, Expr*, int); -int sqlite3ExprCodeTemp(Parse*, Expr*, int*); -int sqlite3ExprCodeTarget(Parse*, Expr*, int); -void sqlite3ExprCodeAndCache(Parse*, Expr*, int); -int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8); -#define SQLITE_ECEL_DUP 0x01 /* Deep, not shallow copies */ -#define SQLITE_ECEL_FACTOR 0x02 /* Factor out constant terms */ -#define SQLITE_ECEL_REF 0x04 /* Use ExprList.u.x.iOrderByCol */ -#define SQLITE_ECEL_OMITREF 0x08 /* Omit if ExprList.u.x.iOrderByCol */ -void sqlite3ExprIfTrue(Parse*, Expr*, int, int); -void sqlite3ExprIfFalse(Parse*, Expr*, int, int); -void sqlite3ExprIfFalseDup(Parse*, Expr*, int, int); -Table *sqlite3FindTable(sqlite3*,const char*, const char*); -#define LOCATE_VIEW 0x01 -#define LOCATE_NOERR 0x02 -Table *sqlite3LocateTable(Parse*,u32 flags,const char*, const char*); -Table *sqlite3LocateTableItem(Parse*,u32 flags,struct SrcList_item *); -Index *sqlite3FindIndex(sqlite3*,const char*, const char*); -void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*); -void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*); -void sqlite3Vacuum(Parse*,Token*); -int sqlite3RunVacuum(char**, sqlite3*, int); -char *sqlite3NameFromToken(sqlite3*, Token*); -int sqlite3ExprCompare(Parse*,Expr*, Expr*, int); -int sqlite3ExprCompareSkip(Expr*, Expr*, int); -int sqlite3ExprListCompare(ExprList*, ExprList*, int); -int sqlite3ExprImpliesExpr(Parse*,Expr*, Expr*, int); -int sqlite3ExprImpliesNonNullRow(Expr*,int); -void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*); -void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*); -int sqlite3ExprCoveredByIndex(Expr*, int iCur, Index *pIdx); -int sqlite3FunctionUsesThisSrc(Expr*, SrcList*); -Vdbe *sqlite3GetVdbe(Parse*); -#ifndef SQLITE_UNTESTABLE -void sqlite3PrngSaveState(void); -void sqlite3PrngRestoreState(void); -#endif -void sqlite3RollbackAll(sqlite3*,int); -void sqlite3CodeVerifySchema(Parse*, int); -void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb); -void sqlite3BeginTransaction(Parse*, int); -void sqlite3EndTransaction(Parse*,int); -void sqlite3Savepoint(Parse*, int, Token*); -void sqlite3CloseSavepoints(sqlite3 *); -void sqlite3LeaveMutexAndCloseZombie(sqlite3*); -int sqlite3ExprIdToTrueFalse(Expr*); -int sqlite3ExprTruthValue(const Expr*); -int sqlite3ExprIsConstant(Expr*); -int sqlite3ExprIsConstantNotJoin(Expr*); -int sqlite3ExprIsConstantOrFunction(Expr*, u8); -int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*); -int sqlite3ExprIsTableConstant(Expr*,int); -#ifdef SQLITE_ENABLE_CURSOR_HINTS -int sqlite3ExprContainsSubquery(Expr*); -#endif -int sqlite3ExprIsInteger(Expr*, int*); -int sqlite3ExprCanBeNull(const Expr*); -int sqlite3ExprNeedsNoAffinityChange(const Expr*, char); -int sqlite3IsRowid(const char*); -void sqlite3GenerateRowDelete( - Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int); -void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int); -int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int); -void sqlite3ResolvePartIdxLabel(Parse*,int); -void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int, - u8,u8,int,int*,int*,Upsert*); -#ifdef SQLITE_ENABLE_NULL_TRIM - void sqlite3SetMakeRecordP5(Vdbe*,Table*); -#else -# define sqlite3SetMakeRecordP5(A,B) -#endif -void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int); -int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*); -void sqlite3BeginWriteOperation(Parse*, int, int); -void sqlite3MultiWrite(Parse*); -void sqlite3MayAbort(Parse*); -void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8); -void sqlite3UniqueConstraint(Parse*, int, Index*); -void sqlite3RowidConstraint(Parse*, int, Table*); -Expr *sqlite3ExprDup(sqlite3*,Expr*,int); -ExprList *sqlite3ExprListDup(sqlite3*,ExprList*,int); -SrcList *sqlite3SrcListDup(sqlite3*,SrcList*,int); -IdList *sqlite3IdListDup(sqlite3*,IdList*); -Select *sqlite3SelectDup(sqlite3*,Select*,int); -#if SELECTTRACE_ENABLED -void sqlite3SelectSetName(Select*,const char*); -#else -# define sqlite3SelectSetName(A,B) -#endif -void sqlite3InsertBuiltinFuncs(FuncDef*,int); -FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,u8,u8); -void sqlite3RegisterBuiltinFunctions(void); -void sqlite3RegisterDateTimeFunctions(void); -void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*); -int sqlite3SafetyCheckOk(sqlite3*); -int sqlite3SafetyCheckSickOrOk(sqlite3*); -void sqlite3ChangeCookie(Parse*, int); - -#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) -void sqlite3MaterializeView(Parse*, Table*, Expr*, ExprList*,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*, - const char*,const char*); - TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*, - Select*,u8,Upsert*, - const char*,const char*); - TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, u8, - const char*,const char*); - TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*, - const char*,const char*); - 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)) -# define sqlite3IsToplevel(p) ((p)->pToplevel==0) -#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 sqlite3IsToplevel(p) 1 -# 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*); -void 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*); -#ifndef SQLITE_OMIT_UTF16 -int sqlite3Utf16ByteLen(const void *pData, int nChar); -#endif -int sqlite3Utf8CharLen(const char *pData, int nByte); -u32 sqlite3Utf8Read(const u8**); -LogEst sqlite3LogEst(u64); -LogEst sqlite3LogEstAdd(LogEst,LogEst); -#ifndef SQLITE_OMIT_VIRTUALTABLE -LogEst sqlite3LogEstFromDouble(double); -#endif -#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \ - defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \ - defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) -u64 sqlite3LogEstToInt(LogEst); -#endif -VList *sqlite3VListAdd(sqlite3*,VList*,const char*,int,int); -const char *sqlite3VListNumToName(VList*,int); -int sqlite3VListNameToNum(VList*,const char*,int); - -/* -** 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. -*/ -int sqlite3PutVarint(unsigned char*, u64); -u8 sqlite3GetVarint(const unsigned char *, u64 *); -u8 sqlite3GetVarint32(const unsigned char *, u32 *); -int sqlite3VarintLen(u64 v); - -/* -** The common case is for a varint to be a single byte. They following -** macros handle the common case without a procedure call, but then call -** the procedure for larger varints. -*/ -#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:\ - sqlite3PutVarint((A),(B))) -#define getVarint sqlite3GetVarint -#define putVarint sqlite3PutVarint - - -const char *sqlite3IndexAffinityStr(sqlite3*, Index*); -void sqlite3TableAffinity(Vdbe*, Table*, int); -char sqlite3CompareAffinity(Expr *pExpr, char aff2); -int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity); -char sqlite3TableColumnAffinity(Table*,int); -char sqlite3ExprAffinity(Expr *pExpr); -int sqlite3Atoi64(const char*, i64*, int, u8); -int sqlite3DecOrHexToI64(const char*, i64*); -void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...); -void sqlite3Error(sqlite3*,int); -void sqlite3SystemError(sqlite3*,int); -void *sqlite3HexToBlob(sqlite3*, const char *z, int n); -u8 sqlite3HexToInt(int h); -int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); - -#if defined(SQLITE_NEED_ERR_NAME) -const char *sqlite3ErrName(int); -#endif - -#ifdef SQLITE_ENABLE_DESERIALIZE -int sqlite3MemdbInit(void); -#endif - -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); -CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr); -int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*); -Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int); -Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*); -Expr *sqlite3ExprSkipCollate(Expr*); -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); -#ifdef SQLITE_ENABLE_8_3_NAMES -void sqlite3FileSuffix3(const char*, char*); -#else -# define sqlite3FileSuffix3(X,Y) -#endif -u8 sqlite3GetBoolean(const char *z,u8); - -const void *sqlite3ValueText(sqlite3_value*, u8); -int sqlite3ValueBytes(sqlite3_value*, u8); -void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, - void(*)(void*)); -void sqlite3ValueSetNull(sqlite3_value*); -void sqlite3ValueFree(sqlite3_value*); -sqlite3_value *sqlite3ValueNew(sqlite3 *); -#ifndef SQLITE_OMIT_UTF16 -char *sqlite3Utf16to8(sqlite3 *, const void*, int, u8); -#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 char sqlite3StrBINARY[]; -extern const unsigned char sqlite3UpperToLower[]; -extern const unsigned char sqlite3CtypeMap[]; -extern const Token sqlite3IntTokens[]; -extern SQLITE_WSD struct Sqlite3Config sqlite3Config; -extern FuncDefHash sqlite3BuiltinFunctions; -#ifndef SQLITE_OMIT_WSD -extern int sqlite3PendingByte; -#endif -#endif -#ifdef VDBE_PROFILE -extern sqlite3_uint64 sqlite3NProfileCnt; -#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*); -void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p); -int sqlite3MatchSpanName(const char*, const char*, const char*, const char*); -int sqlite3ResolveExprNames(NameContext*, Expr*); -int sqlite3ResolveExprListNames(NameContext*, ExprList*); -void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*); -void sqlite3ResolveSelfReference(Parse*,Table*,int,Expr*,ExprList*); -int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*); -void sqlite3ColumnDefault(Vdbe *, Table *, int, int); -void sqlite3AlterFinishAddColumn(Parse *, Token *); -void sqlite3AlterBeginAddColumn(Parse *, SrcList *); -CollSeq *sqlite3GetCollSeq(Parse*, u8, CollSeq *, const char*); -char sqlite3AffinityType(const char*, Column*); -void sqlite3Analyze(Parse*, Token*, Token*); -int sqlite3InvokeBusyHandler(BusyHandler*, sqlite3_file*); -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 sqlite3SchemaClear(void *); -Schema *sqlite3SchemaGet(sqlite3 *, Btree *); -int sqlite3SchemaToIndex(sqlite3 *db, Schema *); -KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int); -void sqlite3KeyInfoUnref(KeyInfo*); -KeyInfo *sqlite3KeyInfoRef(KeyInfo*); -KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*); -#ifdef SQLITE_DEBUG -int sqlite3KeyInfoIsWriteable(KeyInfo*); -#endif -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 -); -void sqlite3NoopDestructor(void*); -void sqlite3OomFault(sqlite3*); -void sqlite3OomClear(sqlite3*); -int sqlite3ApiExit(sqlite3 *db, int); -int sqlite3OpenTempDatabase(Parse *); - -void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int); -char *sqlite3StrAccumFinish(StrAccum*); -void sqlite3SelectDestInit(SelectDest*,int,int); -Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int); - -void sqlite3BackupRestart(sqlite3_backup *); -void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *); - -#ifndef SQLITE_OMIT_SUBQUERY -int sqlite3ExprCheckIN(Parse*, Expr*); -#else -# define sqlite3ExprCheckIN(x,y) SQLITE_OK -#endif - -#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 -void sqlite3AnalyzeFunctions(void); -int sqlite3Stat4ProbeSetValue( - Parse*,Index*,UnpackedRecord**,Expr*,int,int,int*); -int sqlite3Stat4ValueFromExpr(Parse*, Expr*, u8, sqlite3_value**); -void sqlite3Stat4ProbeFree(UnpackedRecord*); -int sqlite3Stat4Column(sqlite3*, const void*, int, int, sqlite3_value**); -char sqlite3IndexColumnAffinity(sqlite3*, Index*, int); -#endif - -/* -** The interface to the LEMON-generated parser -*/ -#ifndef SQLITE_AMALGAMATION - void *sqlite3ParserAlloc(void*(*)(u64), Parse*); - void sqlite3ParserFree(void*, void(*)(void*)); -#endif -void sqlite3Parser(void*, int, Token); -#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) -# define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK -# define sqlite3GetVTable(X,Y) ((VTable*)0) -#else - void sqlite3VtabClear(sqlite3 *db, Table*); - void sqlite3VtabDisconnect(sqlite3 *db, Table *p); - int sqlite3VtabSync(sqlite3 *db, Vdbe*); - int sqlite3VtabRollback(sqlite3 *db); - int sqlite3VtabCommit(sqlite3 *db); - void sqlite3VtabLock(VTable *); - void sqlite3VtabUnlock(VTable *); - void sqlite3VtabUnlockList(sqlite3*); - int sqlite3VtabSavepoint(sqlite3 *, int, int); - void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*); - VTable *sqlite3GetVTable(sqlite3*, Table*); - Module *sqlite3VtabCreateModule( - sqlite3*, - const char*, - const sqlite3_module*, - void*, - void(*)(void*) - ); -# define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0) -#endif -int sqlite3VtabEponymousTableInit(Parse*,Module*); -void sqlite3VtabEponymousTableClear(sqlite3*,Module*); -void sqlite3VtabMakeWritable(Parse*,Table*); -void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*, int); -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*); -sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context*); -int sqlite3VdbeParameterIndex(Vdbe*, const char*, int); -int sqlite3TransferBindings(sqlite3_stmt *, sqlite3_stmt *); -void sqlite3ParserReset(Parse*); -int sqlite3Reprepare(Vdbe*); -void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*); -CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *); -int sqlite3TempInMemory(const sqlite3*); -const char *sqlite3JournalModename(int); -#ifndef SQLITE_OMIT_WAL - int sqlite3Checkpoint(sqlite3*, int, int, int*, int*); - int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int); -#endif -#ifndef SQLITE_OMIT_CTE - With *sqlite3WithAdd(Parse*,With*,Token*,ExprList*,Select*); - void sqlite3WithDelete(sqlite3*,With*); - void sqlite3WithPush(Parse*, With*, u8); -#else -#define sqlite3WithPush(x,y,z) -#define sqlite3WithDelete(x,y) -#endif -#ifndef SQLITE_OMIT_UPSERT - Upsert *sqlite3UpsertNew(sqlite3*,ExprList*,Expr*,ExprList*,Expr*); - void sqlite3UpsertDelete(sqlite3*,Upsert*); - Upsert *sqlite3UpsertDup(sqlite3*,Upsert*); - int sqlite3UpsertAnalyzeTarget(Parse*,SrcList*,Upsert*); - void sqlite3UpsertDoUpdate(Parse*,Upsert*,Table*,Index*,int); -#else -#define sqlite3UpsertNew(v,w,x,y,z) ((Upsert*)0) -#define sqlite3UpsertDelete(x,y) -#define sqlite3UpsertDup(x,y) ((Upsert*)0) -#endif - - -/* 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, int*, int); - void sqlite3FkDropTable(Parse*, SrcList *, Table*); - void sqlite3FkActions(Parse*, Table*, ExprList*, int, int*, int); - int sqlite3FkRequired(Parse*, Table*, int*, int); - u32 sqlite3FkOldmask(Parse*, Table*); - FKey *sqlite3FkReferences(Table *); -#else - #define sqlite3FkActions(a,b,c,d,e,f) - #define sqlite3FkCheck(a,b,c,d,e,f) - #define sqlite3FkDropTable(a,b,c) - #define sqlite3FkOldmask(a,b) 0 - #define sqlite3FkRequired(a,b,c,d) 0 - #define sqlite3FkReferences(a) 0 -#endif -#ifndef SQLITE_OMIT_FOREIGN_KEY - void sqlite3FkDelete(sqlite3 *, Table*); - int sqlite3FkLocateIndex(Parse*,Table*,FKey*,Index**,int**); -#else - #define sqlite3FkDelete(a,b) - #define sqlite3FkLocateIndex(a,b,c,d,e) -#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_UNTESTABLE -** is not defined. -*/ -#ifndef SQLITE_UNTESTABLE - void sqlite3BeginBenignMalloc(void); - void sqlite3EndBenignMalloc(void); -#else - #define sqlite3BeginBenignMalloc() - #define sqlite3EndBenignMalloc() -#endif - -/* -** Allowed return values from sqlite3FindInIndex() -*/ -#define IN_INDEX_ROWID 1 /* Search the rowid of the table */ -#define IN_INDEX_EPH 2 /* Search an ephemeral b-tree */ -#define IN_INDEX_INDEX_ASC 3 /* Existing index ASCENDING */ -#define IN_INDEX_INDEX_DESC 4 /* Existing index DESCENDING */ -#define IN_INDEX_NOOP 5 /* No table available. Use comparisons */ -/* -** Allowed flags for the 3rd parameter to sqlite3FindInIndex(). -*/ -#define IN_INDEX_NOOP_OK 0x0001 /* OK to return IN_INDEX_NOOP */ -#define IN_INDEX_MEMBERSHIP 0x0002 /* IN operator used for membership test */ -#define IN_INDEX_LOOP 0x0004 /* IN operator used as a loop */ -int sqlite3FindInIndex(Parse *, Expr *, u32, int*, int*); - -int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int); -int sqlite3JournalSize(sqlite3_vfs *); -#if defined(SQLITE_ENABLE_ATOMIC_WRITE) \ - || defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) - int sqlite3JournalCreate(sqlite3_file *); -#endif - -int sqlite3JournalIsInMemory(sqlite3_file *p); -void sqlite3MemJournalOpen(sqlite3_file *); - -void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p); -#if SQLITE_MAX_EXPR_DEPTH>0 - int sqlite3SelectExprHeight(Select *); - int sqlite3ExprCheckHeight(Parse*, int); -#else - #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 defined(YYCOVERAGE) - int sqlite3ParserCoverage(FILE*); -#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_API SQLITE_EXTERN void (SQLITE_CDECL *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 /* Heap that might have been lookaside */ -#define MEMTYPE_PCACHE 0x04 /* Page cache allocations */ - -/* -** Threading interface -*/ -#if SQLITE_MAX_WORKER_THREADS>0 -int sqlite3ThreadCreate(SQLiteThread**,void*(*)(void*),void*); -int sqlite3ThreadJoin(SQLiteThread*, void**); -#endif - -#if defined(SQLITE_ENABLE_DBPAGE_VTAB) || defined(SQLITE_TEST) -int sqlite3DbpageRegister(sqlite3*); -#endif -#if defined(SQLITE_ENABLE_DBSTAT_VTAB) || defined(SQLITE_TEST) -int sqlite3DbstatRegister(sqlite3*); -#endif - -int sqlite3ExprVectorSize(Expr *pExpr); -int sqlite3ExprIsVector(Expr *pExpr); -Expr *sqlite3VectorFieldSubexpr(Expr*, int); -Expr *sqlite3ExprForVectorField(Parse*,Expr*,int); -void sqlite3VectorErrorMsg(Parse*, Expr*); - -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS -const char **sqlite3CompileOptions(int *pnOpt); -#endif - -#endif /* SQLITEINT_H */ |