f78ceafdce
used new shared cache functionality (yay) --HG-- extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401651
1973 lines
85 KiB
C
1973 lines
85 KiB
C
/*
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** 2001 September 15
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**
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** The author disclaims copyright to this source code. In place of
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** a legal notice, here is a blessing:
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**
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** May you do good and not evil.
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** May you find forgiveness for yourself and forgive others.
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** May you share freely, never taking more than you give.
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**
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*************************************************************************
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** Internal interface definitions for SQLite.
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**
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** @(#) $Id$
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*/
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#ifndef _SQLITEINT_H_
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#define _SQLITEINT_H_
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#include "sqliteLimit.h"
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/*
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** For testing purposes, the various size limit constants are really
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** variables that we can modify in the testfixture.
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*/
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#ifdef SQLITE_TEST
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#undef SQLITE_MAX_LENGTH
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#undef SQLITE_MAX_COLUMN
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#undef SQLITE_MAX_SQL_LENGTH
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#undef SQLITE_MAX_EXPR_DEPTH
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#undef SQLITE_MAX_COMPOUND_SELECT
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#undef SQLITE_MAX_VDBE_OP
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#undef SQLITE_MAX_FUNCTION_ARG
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#undef SQLITE_MAX_VARIABLE_NUMBER
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#undef SQLITE_MAX_PAGE_SIZE
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#undef SQLITE_MAX_PAGE_COUNT
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#undef SQLITE_MAX_LIKE_PATTERN_LENGTH
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#define SQLITE_MAX_LENGTH sqlite3MAX_LENGTH
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#define SQLITE_MAX_COLUMN sqlite3MAX_COLUMN
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#define SQLITE_MAX_SQL_LENGTH sqlite3MAX_SQL_LENGTH
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#define SQLITE_MAX_EXPR_DEPTH sqlite3MAX_EXPR_DEPTH
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#define SQLITE_MAX_COMPOUND_SELECT sqlite3MAX_COMPOUND_SELECT
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#define SQLITE_MAX_VDBE_OP sqlite3MAX_VDBE_OP
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#define SQLITE_MAX_FUNCTION_ARG sqlite3MAX_FUNCTION_ARG
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#define SQLITE_MAX_VARIABLE_NUMBER sqlite3MAX_VARIABLE_NUMBER
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#define SQLITE_MAX_PAGE_SIZE sqlite3MAX_PAGE_SIZE
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#define SQLITE_MAX_PAGE_COUNT sqlite3MAX_PAGE_COUNT
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#define SQLITE_MAX_LIKE_PATTERN_LENGTH sqlite3MAX_LIKE_PATTERN_LENGTH
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extern int sqlite3MAX_LENGTH;
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extern int sqlite3MAX_COLUMN;
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extern int sqlite3MAX_SQL_LENGTH;
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extern int sqlite3MAX_EXPR_DEPTH;
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extern int sqlite3MAX_COMPOUND_SELECT;
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extern int sqlite3MAX_VDBE_OP;
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extern int sqlite3MAX_FUNCTION_ARG;
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extern int sqlite3MAX_VARIABLE_NUMBER;
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extern int sqlite3MAX_PAGE_SIZE;
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extern int sqlite3MAX_PAGE_COUNT;
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extern int sqlite3MAX_LIKE_PATTERN_LENGTH;
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#endif
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/*
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** The SQLITE_THREADSAFE macro must be defined as either 0 or 1.
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** Older versions of SQLite used an optional THREADSAFE macro.
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** We support that for legacy
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*/
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#if !defined(SQLITE_THREADSAFE)
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#if defined(THREADSAFE)
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# define SQLITE_THREADSAFE THREADSAFE
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#else
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# define SQLITE_THREADSAFE 1
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#endif
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#endif
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/*
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** We need to define _XOPEN_SOURCE as follows in order to enable
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** recursive mutexes on most unix systems. But Mac OS X is different.
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** The _XOPEN_SOURCE define causes problems for Mac OS X we are told,
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** so it is omitted there. See ticket #2673.
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**
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** Later we learn that _XOPEN_SOURCE is poorly or incorrectly
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** implemented on some systems. So we avoid defining it at all
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** if it is already defined or if it is unneeded because we are
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** not doing a threadsafe build. Ticket #2681.
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*/
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#if !defined(_XOPEN_SOURCE) && !defined(__MACOS__) && SQLITE_THREADSAFE
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# define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */
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#endif
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#if defined(SQLITE_TCL) || defined(TCLSH)
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# include <tcl.h>
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#endif
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/*
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** Many people are failing to set -DNDEBUG=1 when compiling SQLite.
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** Setting NDEBUG makes the code smaller and run faster. So the following
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** lines are added to automatically set NDEBUG unless the -DSQLITE_DEBUG=1
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** option is set. Thus NDEBUG becomes an opt-in rather than an opt-out
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** feature.
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*/
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#if !defined(NDEBUG) && !defined(SQLITE_DEBUG)
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# define NDEBUG 1
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#endif
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/*
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** These #defines should enable >2GB file support on Posix if the
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** underlying operating system supports it. If the OS lacks
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** large file support, or if the OS is windows, these should be no-ops.
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**
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** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch
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** on the compiler command line. This is necessary if you are compiling
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** on a recent machine (ex: RedHat 7.2) but you want your code to work
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** on an older machine (ex: RedHat 6.0). If you compile on RedHat 7.2
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** without this option, LFS is enable. But LFS does not exist in the kernel
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** in RedHat 6.0, so the code won't work. Hence, for maximum binary
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** portability you should omit LFS.
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**
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** Similar is true for MacOS. LFS is only supported on MacOS 9 and later.
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*/
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#ifndef SQLITE_DISABLE_LFS
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# define _LARGE_FILE 1
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# ifndef _FILE_OFFSET_BITS
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# define _FILE_OFFSET_BITS 64
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# endif
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# define _LARGEFILE_SOURCE 1
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#endif
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#include "sqlite3.h"
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#include "hash.h"
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#include "parse.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <stddef.h>
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#define sqlite3_isnan(X) ((X)!=(X))
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/*
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** If compiling for a processor that lacks floating point support,
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** substitute integer for floating-point
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*/
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#ifdef SQLITE_OMIT_FLOATING_POINT
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# define double sqlite_int64
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# define LONGDOUBLE_TYPE sqlite_int64
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# ifndef SQLITE_BIG_DBL
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# define SQLITE_BIG_DBL (0x7fffffffffffffff)
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# endif
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# define SQLITE_OMIT_DATETIME_FUNCS 1
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# define SQLITE_OMIT_TRACE 1
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# undef SQLITE_MIXED_ENDIAN_64BIT_FLOAT
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#endif
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#ifndef SQLITE_BIG_DBL
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# define SQLITE_BIG_DBL (1e99)
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#endif
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/*
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** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0
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** afterward. Having this macro allows us to cause the C compiler
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** to omit code used by TEMP tables without messy #ifndef statements.
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*/
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#ifdef SQLITE_OMIT_TEMPDB
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#define OMIT_TEMPDB 1
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#else
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#define OMIT_TEMPDB 0
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#endif
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/*
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** If the following macro is set to 1, then NULL values are considered
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** distinct when determining whether or not two entries are the same
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** in a UNIQUE index. This is the way PostgreSQL, Oracle, DB2, MySQL,
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** OCELOT, and Firebird all work. The SQL92 spec explicitly says this
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** is the way things are suppose to work.
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**
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** If the following macro is set to 0, the NULLs are indistinct for
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** a UNIQUE index. In this mode, you can only have a single NULL entry
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** for a column declared UNIQUE. This is the way Informix and SQL Server
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** work.
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*/
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#define NULL_DISTINCT_FOR_UNIQUE 1
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/*
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** The "file format" number is an integer that is incremented whenever
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** the VDBE-level file format changes. The following macros define the
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** the default file format for new databases and the maximum file format
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** that the library can read.
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*/
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#define SQLITE_MAX_FILE_FORMAT 4
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#ifndef SQLITE_DEFAULT_FILE_FORMAT
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# define SQLITE_DEFAULT_FILE_FORMAT 1
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#endif
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/*
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** Provide a default value for TEMP_STORE in case it is not specified
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** on the command-line
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*/
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#ifndef TEMP_STORE
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# define TEMP_STORE 1
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#endif
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/*
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** GCC does not define the offsetof() macro so we'll have to do it
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** ourselves.
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*/
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#ifndef offsetof
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#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD))
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#endif
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/*
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** Check to see if this machine uses EBCDIC. (Yes, believe it or
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** not, there are still machines out there that use EBCDIC.)
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*/
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#if 'A' == '\301'
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# define SQLITE_EBCDIC 1
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#else
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# define SQLITE_ASCII 1
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#endif
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/*
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** Integers of known sizes. These typedefs might change for architectures
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** where the sizes very. Preprocessor macros are available so that the
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** types can be conveniently redefined at compile-type. Like this:
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**
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** cc '-DUINTPTR_TYPE=long long int' ...
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*/
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#ifndef UINT32_TYPE
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# define UINT32_TYPE unsigned int
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#endif
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#ifndef UINT16_TYPE
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# define UINT16_TYPE unsigned short int
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#endif
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#ifndef INT16_TYPE
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# define INT16_TYPE short int
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#endif
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#ifndef UINT8_TYPE
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# define UINT8_TYPE unsigned char
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#endif
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#ifndef INT8_TYPE
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# define INT8_TYPE signed char
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#endif
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#ifndef LONGDOUBLE_TYPE
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# define LONGDOUBLE_TYPE long double
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#endif
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typedef sqlite_int64 i64; /* 8-byte signed integer */
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typedef sqlite_uint64 u64; /* 8-byte unsigned integer */
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typedef UINT32_TYPE u32; /* 4-byte unsigned integer */
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typedef UINT16_TYPE u16; /* 2-byte unsigned integer */
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typedef INT16_TYPE i16; /* 2-byte signed integer */
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typedef UINT8_TYPE u8; /* 1-byte unsigned integer */
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typedef UINT8_TYPE i8; /* 1-byte signed integer */
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/*
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** Macros to determine whether the machine is big or little endian,
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** evaluated at runtime.
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*/
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#ifdef SQLITE_AMALGAMATION
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const int sqlite3One;
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#else
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extern const int sqlite3one;
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#endif
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#if defined(i386) || defined(__i386__) || defined(_M_IX86)
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# define SQLITE_BIGENDIAN 0
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# define SQLITE_LITTLEENDIAN 1
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# define SQLITE_UTF16NATIVE SQLITE_UTF16LE
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#else
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# define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0)
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# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
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# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)
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#endif
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/*
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** An instance of the following structure is used to store the busy-handler
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** callback for a given sqlite handle.
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**
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** The sqlite.busyHandler member of the sqlite struct contains the busy
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** callback for the database handle. Each pager opened via the sqlite
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** handle is passed a pointer to sqlite.busyHandler. The busy-handler
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** callback is currently invoked only from within pager.c.
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*/
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typedef struct BusyHandler BusyHandler;
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struct BusyHandler {
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int (*xFunc)(void *,int); /* The busy callback */
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void *pArg; /* First arg to busy callback */
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int nBusy; /* Incremented with each busy call */
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};
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/*
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** Defer sourcing vdbe.h and btree.h until after the "u8" and
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** "BusyHandler typedefs.
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*/
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#include "btree.h"
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#include "vdbe.h"
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#include "pager.h"
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/*
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** Name of the master database table. The master database table
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** is a special table that holds the names and attributes of all
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** user tables and indices.
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*/
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#define MASTER_NAME "sqlite_master"
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#define TEMP_MASTER_NAME "sqlite_temp_master"
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/*
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** The root-page of the master database table.
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*/
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#define MASTER_ROOT 1
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/*
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** The name of the schema table.
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*/
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#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME)
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/*
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** A convenience macro that returns the number of elements in
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** an array.
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*/
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#define ArraySize(X) (sizeof(X)/sizeof(X[0]))
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/*
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** Forward references to structures
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*/
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typedef struct AggInfo AggInfo;
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typedef struct AuthContext AuthContext;
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typedef struct CollSeq CollSeq;
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typedef struct Column Column;
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typedef struct Db Db;
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typedef struct Schema Schema;
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typedef struct Expr Expr;
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typedef struct ExprList ExprList;
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typedef struct FKey FKey;
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typedef struct FuncDef FuncDef;
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typedef struct IdList IdList;
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typedef struct Index Index;
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typedef struct KeyClass KeyClass;
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typedef struct KeyInfo KeyInfo;
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typedef struct Module Module;
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typedef struct NameContext NameContext;
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typedef struct Parse Parse;
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typedef struct Select Select;
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typedef struct SrcList SrcList;
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typedef struct Table Table;
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typedef struct TableLock TableLock;
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typedef struct Token Token;
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typedef struct TriggerStack TriggerStack;
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typedef struct TriggerStep TriggerStep;
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typedef struct Trigger Trigger;
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typedef struct WhereInfo WhereInfo;
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typedef struct WhereLevel WhereLevel;
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#include "os.h"
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#include "mutex.h"
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/*
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** Each database file to be accessed by the system is an instance
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** of the following structure. There are normally two of these structures
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** in the sqlite.aDb[] array. aDb[0] is the main database file and
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** aDb[1] is the database file used to hold temporary tables. Additional
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** databases may be attached.
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*/
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struct Db {
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char *zName; /* Name of this database */
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Btree *pBt; /* The B*Tree structure for this database file */
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u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */
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u8 safety_level; /* How aggressive at synching data to disk */
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void *pAux; /* Auxiliary data. Usually NULL */
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void (*xFreeAux)(void*); /* Routine to free pAux */
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Schema *pSchema; /* Pointer to database schema (possibly shared) */
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};
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/*
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** An instance of the following structure stores a database schema.
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**
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** If there are no virtual tables configured in this schema, the
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** Schema.db variable is set to NULL. After the first virtual table
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** has been added, it is set to point to the database connection
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** used to create the connection. Once a virtual table has been
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** added to the Schema structure and the Schema.db variable populated,
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** only that database connection may use the Schema to prepare
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** statements.
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*/
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struct Schema {
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int schema_cookie; /* Database schema version number for this file */
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Hash tblHash; /* All tables indexed by name */
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Hash idxHash; /* All (named) indices indexed by name */
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Hash trigHash; /* All triggers indexed by name */
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Hash aFKey; /* Foreign keys indexed by to-table */
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Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */
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u8 file_format; /* Schema format version for this file */
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u8 enc; /* Text encoding used by this database */
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u16 flags; /* Flags associated with this schema */
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int cache_size; /* Number of pages to use in the cache */
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#ifndef SQLITE_OMIT_VIRTUALTABLE
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sqlite3 *db; /* "Owner" connection. See comment above */
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#endif
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};
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/*
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** These macros can be used to test, set, or clear bits in the
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** Db.flags field.
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*/
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#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))==(P))
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#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))!=0)
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#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->flags|=(P)
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#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P)
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/*
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** Allowed values for the DB.flags field.
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**
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** The DB_SchemaLoaded flag is set after the database schema has been
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** read into internal hash tables.
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**
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** DB_UnresetViews means that one or more views have column names that
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** have been filled out. If the schema changes, these column names might
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** changes and so the view will need to be reset.
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*/
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#define DB_SchemaLoaded 0x0001 /* The schema has been loaded */
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#define DB_UnresetViews 0x0002 /* Some views have defined column names */
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#define DB_Empty 0x0004 /* The file is empty (length 0 bytes) */
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/*
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** Each database is an instance of the following structure.
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**
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** The sqlite.lastRowid records the last insert rowid generated by an
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** insert statement. Inserts on views do not affect its value. Each
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** trigger has its own context, so that lastRowid can be updated inside
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** triggers as usual. The previous value will be restored once the trigger
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** exits. Upon entering a before or instead of trigger, lastRowid is no
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** longer (since after version 2.8.12) reset to -1.
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**
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** The sqlite.nChange does not count changes within triggers and keeps no
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** context. It is reset at start of sqlite3_exec.
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** The sqlite.lsChange represents the number of changes made by the last
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** insert, update, or delete statement. It remains constant throughout the
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** length of a statement and is then updated by OP_SetCounts. It keeps a
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** context stack just like lastRowid so that the count of changes
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** within a trigger is not seen outside the trigger. Changes to views do not
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** affect the value of lsChange.
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** The sqlite.csChange keeps track of the number of current changes (since
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** the last statement) and is used to update sqlite_lsChange.
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**
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** The member variables sqlite.errCode, sqlite.zErrMsg and sqlite.zErrMsg16
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** store the most recent error code and, if applicable, string. The
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** internal function sqlite3Error() is used to set these variables
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** consistently.
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*/
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struct sqlite3 {
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sqlite3_vfs *pVfs; /* OS Interface */
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int nDb; /* Number of backends currently in use */
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Db *aDb; /* All backends */
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int flags; /* Miscellanous flags. See below */
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int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
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int errCode; /* Most recent error code (SQLITE_*) */
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int errMask; /* & result codes with this before returning */
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u8 autoCommit; /* The auto-commit flag. */
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u8 temp_store; /* 1: file 2: memory 0: default */
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u8 mallocFailed; /* True if we have seen a malloc failure */
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int nTable; /* Number of tables in the database */
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CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
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i64 lastRowid; /* ROWID of most recent insert (see above) */
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i64 priorNewRowid; /* Last randomly generated ROWID */
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int magic; /* Magic number for detect library misuse */
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int nChange; /* Value returned by sqlite3_changes() */
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int nTotalChange; /* Value returned by sqlite3_total_changes() */
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sqlite3_mutex *mutex; /* Connection mutex */
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struct sqlite3InitInfo { /* Information used during initialization */
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int iDb; /* When back is being initialized */
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int newTnum; /* Rootpage of table being initialized */
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u8 busy; /* TRUE if currently initializing */
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} init;
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int nExtension; /* Number of loaded extensions */
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void **aExtension; /* Array of shared libraray handles */
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struct Vdbe *pVdbe; /* List of active virtual machines */
|
|
int activeVdbeCnt; /* Number of vdbes currently executing */
|
|
void (*xTrace)(void*,const char*); /* Trace function */
|
|
void *pTraceArg; /* Argument to the trace function */
|
|
void (*xProfile)(void*,const char*,u64); /* Profiling function */
|
|
void *pProfileArg; /* Argument to profile function */
|
|
void *pCommitArg; /* Argument to xCommitCallback() */
|
|
int (*xCommitCallback)(void*); /* Invoked at every commit. */
|
|
void *pRollbackArg; /* Argument to xRollbackCallback() */
|
|
void (*xRollbackCallback)(void*); /* Invoked at every commit. */
|
|
void *pUpdateArg;
|
|
void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64);
|
|
void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*);
|
|
void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*);
|
|
void *pCollNeededArg;
|
|
sqlite3_value *pErr; /* Most recent error message */
|
|
char *zErrMsg; /* Most recent error message (UTF-8 encoded) */
|
|
char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */
|
|
union {
|
|
int isInterrupted; /* True if sqlite3_interrupt has been called */
|
|
double notUsed1; /* Spacer */
|
|
} u1;
|
|
#ifndef SQLITE_OMIT_AUTHORIZATION
|
|
int (*xAuth)(void*,int,const char*,const char*,const char*,const char*);
|
|
/* Access authorization function */
|
|
void *pAuthArg; /* 1st argument to the access auth function */
|
|
#endif
|
|
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
|
|
int (*xProgress)(void *); /* The progress callback */
|
|
void *pProgressArg; /* Argument to the progress callback */
|
|
int nProgressOps; /* Number of opcodes for progress callback */
|
|
#endif
|
|
#ifndef SQLITE_OMIT_VIRTUALTABLE
|
|
Hash aModule; /* populated by sqlite3_create_module() */
|
|
Table *pVTab; /* vtab with active Connect/Create method */
|
|
sqlite3_vtab **aVTrans; /* Virtual tables with open transactions */
|
|
int nVTrans; /* Allocated size of aVTrans */
|
|
#endif
|
|
Hash aFunc; /* All functions that can be in SQL exprs */
|
|
Hash aCollSeq; /* All collating sequences */
|
|
BusyHandler busyHandler; /* Busy callback */
|
|
int busyTimeout; /* Busy handler timeout, in msec */
|
|
Db aDbStatic[2]; /* Static space for the 2 default backends */
|
|
#ifdef SQLITE_SSE
|
|
sqlite3_stmt *pFetch; /* Used by SSE to fetch stored statements */
|
|
#endif
|
|
u8 dfltLockMode; /* Default locking-mode for attached dbs */
|
|
};
|
|
|
|
/*
|
|
** A macro to discover the encoding of a database.
|
|
*/
|
|
#define ENC(db) ((db)->aDb[0].pSchema->enc)
|
|
|
|
/*
|
|
** Possible values for the sqlite.flags and or Db.flags fields.
|
|
**
|
|
** On sqlite.flags, the SQLITE_InTrans value means that we have
|
|
** executed a BEGIN. On Db.flags, SQLITE_InTrans means a statement
|
|
** transaction is active on that particular database file.
|
|
*/
|
|
#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */
|
|
#define SQLITE_InTrans 0x00000008 /* True if in a transaction */
|
|
#define SQLITE_InternChanges 0x00000010 /* Uncommitted Hash table changes */
|
|
#define SQLITE_FullColNames 0x00000020 /* Show full column names on SELECT */
|
|
#define SQLITE_ShortColNames 0x00000040 /* Show short columns names */
|
|
#define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */
|
|
/* DELETE, or UPDATE and return */
|
|
/* the count using a callback. */
|
|
#define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */
|
|
/* result set is empty */
|
|
#define SQLITE_SqlTrace 0x00000200 /* Debug print SQL as it executes */
|
|
#define SQLITE_VdbeListing 0x00000400 /* Debug listings of VDBE programs */
|
|
#define SQLITE_WriteSchema 0x00000800 /* OK to update SQLITE_MASTER */
|
|
#define SQLITE_NoReadlock 0x00001000 /* Readlocks are omitted when
|
|
** accessing read-only databases */
|
|
#define SQLITE_IgnoreChecks 0x00002000 /* Do not enforce check constraints */
|
|
#define SQLITE_ReadUncommitted 0x00004000 /* For shared-cache mode */
|
|
#define SQLITE_LegacyFileFmt 0x00008000 /* Create new databases in format 1 */
|
|
#define SQLITE_FullFSync 0x00010000 /* Use full fsync on the backend */
|
|
#define SQLITE_LoadExtension 0x00020000 /* Enable load_extension */
|
|
|
|
#define SQLITE_RecoveryMode 0x00040000 /* Ignore schema errors */
|
|
#define SQLITE_SharedCache 0x00080000 /* Cache sharing is enabled */
|
|
#define SQLITE_Vtab 0x00100000 /* There exists a virtual table */
|
|
|
|
/*
|
|
** Possible values for the sqlite.magic field.
|
|
** The numbers are obtained at random and have no special meaning, other
|
|
** than being distinct from one another.
|
|
*/
|
|
#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */
|
|
#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */
|
|
#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */
|
|
#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */
|
|
|
|
/*
|
|
** Each SQL function is defined by an instance of the following
|
|
** structure. A pointer to this structure is stored in the sqlite.aFunc
|
|
** hash table. When multiple functions have the same name, the hash table
|
|
** points to a linked list of these structures.
|
|
*/
|
|
struct FuncDef {
|
|
i16 nArg; /* Number of arguments. -1 means unlimited */
|
|
u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */
|
|
u8 needCollSeq; /* True if sqlite3GetFuncCollSeq() might be called */
|
|
u8 flags; /* Some combination of SQLITE_FUNC_* */
|
|
void *pUserData; /* User data parameter */
|
|
FuncDef *pNext; /* Next function with same name */
|
|
void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */
|
|
void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
|
|
void (*xFinalize)(sqlite3_context*); /* Aggregate finializer */
|
|
char zName[1]; /* SQL name of the function. MUST BE LAST */
|
|
};
|
|
|
|
/*
|
|
** Each SQLite module (virtual table definition) is defined by an
|
|
** instance of the following structure, stored in the sqlite3.aModule
|
|
** hash table.
|
|
*/
|
|
struct Module {
|
|
const sqlite3_module *pModule; /* Callback pointers */
|
|
const char *zName; /* Name passed to create_module() */
|
|
void *pAux; /* pAux passed to create_module() */
|
|
void (*xDestroy)(void *); /* Module destructor function */
|
|
};
|
|
|
|
/*
|
|
** Possible values for FuncDef.flags
|
|
*/
|
|
#define SQLITE_FUNC_LIKE 0x01 /* Candidate for the LIKE optimization */
|
|
#define SQLITE_FUNC_CASE 0x02 /* Case-sensitive LIKE-type function */
|
|
#define SQLITE_FUNC_EPHEM 0x04 /* Ephermeral. Delete with VDBE */
|
|
|
|
/*
|
|
** information about each column of an SQL table is held in an instance
|
|
** of this structure.
|
|
*/
|
|
struct Column {
|
|
char *zName; /* Name of this column */
|
|
Expr *pDflt; /* Default value of this column */
|
|
char *zType; /* Data type for this column */
|
|
char *zColl; /* Collating sequence. If NULL, use the default */
|
|
u8 notNull; /* True if there is a NOT NULL constraint */
|
|
u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */
|
|
char affinity; /* One of the SQLITE_AFF_... values */
|
|
#ifndef SQLITE_OMIT_VIRTUALTABLE
|
|
u8 isHidden; /* True if this column is 'hidden' */
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
** A "Collating Sequence" is defined by an instance of the following
|
|
** structure. Conceptually, a collating sequence consists of a name and
|
|
** a comparison routine that defines the order of that sequence.
|
|
**
|
|
** There may two seperate implementations of the collation function, one
|
|
** that processes text in UTF-8 encoding (CollSeq.xCmp) and another that
|
|
** processes text encoded in UTF-16 (CollSeq.xCmp16), using the machine
|
|
** native byte order. When a collation sequence is invoked, SQLite selects
|
|
** the version that will require the least expensive encoding
|
|
** translations, if any.
|
|
**
|
|
** The CollSeq.pUser member variable is an extra parameter that passed in
|
|
** as the first argument to the UTF-8 comparison function, xCmp.
|
|
** CollSeq.pUser16 is the equivalent for the UTF-16 comparison function,
|
|
** xCmp16.
|
|
**
|
|
** If both CollSeq.xCmp and CollSeq.xCmp16 are NULL, it means that the
|
|
** collating sequence is undefined. Indices built on an undefined
|
|
** collating sequence may not be read or written.
|
|
*/
|
|
struct CollSeq {
|
|
char *zName; /* Name of the collating sequence, UTF-8 encoded */
|
|
u8 enc; /* Text encoding handled by xCmp() */
|
|
u8 type; /* One of the SQLITE_COLL_... values below */
|
|
void *pUser; /* First argument to xCmp() */
|
|
int (*xCmp)(void*,int, const void*, int, const void*);
|
|
void (*xDel)(void*); /* Destructor for pUser */
|
|
};
|
|
|
|
/*
|
|
** Allowed values of CollSeq flags:
|
|
*/
|
|
#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
|
|
#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
|
|
#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
|
|
#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
|
|
|
|
/*
|
|
** A sort order can be either ASC or DESC.
|
|
*/
|
|
#define SQLITE_SO_ASC 0 /* Sort in ascending order */
|
|
#define SQLITE_SO_DESC 1 /* Sort in ascending order */
|
|
|
|
/*
|
|
** Column affinity types.
|
|
**
|
|
** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and
|
|
** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve
|
|
** the speed a little by number the values consecutively.
|
|
**
|
|
** But rather than start with 0 or 1, we begin with 'a'. That way,
|
|
** when multiple affinity types are concatenated into a string and
|
|
** used as the P3 operand, they will be more readable.
|
|
**
|
|
** Note also that the numeric types are grouped together so that testing
|
|
** for a numeric type is a single comparison.
|
|
*/
|
|
#define SQLITE_AFF_TEXT 'a'
|
|
#define SQLITE_AFF_NONE 'b'
|
|
#define SQLITE_AFF_NUMERIC 'c'
|
|
#define SQLITE_AFF_INTEGER 'd'
|
|
#define SQLITE_AFF_REAL 'e'
|
|
|
|
#define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC)
|
|
|
|
/*
|
|
** Each SQL table is represented in memory by an instance of the
|
|
** following structure.
|
|
**
|
|
** Table.zName is the name of the table. The case of the original
|
|
** CREATE TABLE statement is stored, but case is not significant for
|
|
** comparisons.
|
|
**
|
|
** Table.nCol is the number of columns in this table. Table.aCol is a
|
|
** pointer to an array of Column structures, one for each column.
|
|
**
|
|
** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of
|
|
** the column that is that key. Otherwise Table.iPKey is negative. Note
|
|
** that the datatype of the PRIMARY KEY must be INTEGER for this field to
|
|
** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of
|
|
** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid
|
|
** is generated for each row of the table. Table.hasPrimKey is true if
|
|
** the table has any PRIMARY KEY, INTEGER or otherwise.
|
|
**
|
|
** Table.tnum is the page number for the root BTree page of the table in the
|
|
** database file. If Table.iDb is the index of the database table backend
|
|
** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that
|
|
** holds temporary tables and indices. If Table.isEphem
|
|
** is true, then the table is stored in a file that is automatically deleted
|
|
** when the VDBE cursor to the table is closed. In this case Table.tnum
|
|
** refers VDBE cursor number that holds the table open, not to the root
|
|
** page number. Transient tables are used to hold the results of a
|
|
** sub-query that appears instead of a real table name in the FROM clause
|
|
** of a SELECT statement.
|
|
*/
|
|
struct Table {
|
|
char *zName; /* Name of the table */
|
|
int nCol; /* Number of columns in this table */
|
|
Column *aCol; /* Information about each column */
|
|
int iPKey; /* If not less then 0, use aCol[iPKey] as the primary key */
|
|
Index *pIndex; /* List of SQL indexes on this table. */
|
|
int tnum; /* Root BTree node for this table (see note above) */
|
|
Select *pSelect; /* NULL for tables. Points to definition if a view. */
|
|
int nRef; /* Number of pointers to this Table */
|
|
Trigger *pTrigger; /* List of SQL triggers on this table */
|
|
FKey *pFKey; /* Linked list of all foreign keys in this table */
|
|
char *zColAff; /* String defining the affinity of each column */
|
|
#ifndef SQLITE_OMIT_CHECK
|
|
Expr *pCheck; /* The AND of all CHECK constraints */
|
|
#endif
|
|
#ifndef SQLITE_OMIT_ALTERTABLE
|
|
int addColOffset; /* Offset in CREATE TABLE statement to add a new column */
|
|
#endif
|
|
u8 readOnly; /* True if this table should not be written by the user */
|
|
u8 isEphem; /* True if created using OP_OpenEphermeral */
|
|
u8 hasPrimKey; /* True if there exists a primary key */
|
|
u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */
|
|
u8 autoInc; /* True if the integer primary key is autoincrement */
|
|
#ifndef SQLITE_OMIT_VIRTUALTABLE
|
|
u8 isVirtual; /* True if this is a virtual table */
|
|
u8 isCommit; /* True once the CREATE TABLE has been committed */
|
|
Module *pMod; /* Pointer to the implementation of the module */
|
|
sqlite3_vtab *pVtab; /* Pointer to the module instance */
|
|
int nModuleArg; /* Number of arguments to the module */
|
|
char **azModuleArg; /* Text of all module args. [0] is module name */
|
|
#endif
|
|
Schema *pSchema; /* Schema that contains this table */
|
|
};
|
|
|
|
/*
|
|
** Test to see whether or not a table is a virtual table. This is
|
|
** done as a macro so that it will be optimized out when virtual
|
|
** table support is omitted from the build.
|
|
*/
|
|
#ifndef SQLITE_OMIT_VIRTUALTABLE
|
|
# define IsVirtual(X) ((X)->isVirtual)
|
|
# define IsHiddenColumn(X) ((X)->isHidden)
|
|
#else
|
|
# define IsVirtual(X) 0
|
|
# define IsHiddenColumn(X) 0
|
|
#endif
|
|
|
|
/*
|
|
** Each foreign key constraint is an instance of the following structure.
|
|
**
|
|
** A foreign key is associated with two tables. The "from" table is
|
|
** the table that contains the REFERENCES clause that creates the foreign
|
|
** key. The "to" table is the table that is named in the REFERENCES clause.
|
|
** Consider this example:
|
|
**
|
|
** CREATE TABLE ex1(
|
|
** a INTEGER PRIMARY KEY,
|
|
** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x)
|
|
** );
|
|
**
|
|
** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2".
|
|
**
|
|
** Each REFERENCES clause generates an instance of the following structure
|
|
** which is attached to the from-table. The to-table need not exist when
|
|
** the from-table is created. The existance of the to-table is not checked
|
|
** until an attempt is made to insert data into the from-table.
|
|
**
|
|
** The sqlite.aFKey hash table stores pointers to this structure
|
|
** given the name of a to-table. For each to-table, all foreign keys
|
|
** associated with that table are on a linked list using the FKey.pNextTo
|
|
** field.
|
|
*/
|
|
struct FKey {
|
|
Table *pFrom; /* The table that constains the REFERENCES clause */
|
|
FKey *pNextFrom; /* Next foreign key in pFrom */
|
|
char *zTo; /* Name of table that the key points to */
|
|
FKey *pNextTo; /* Next foreign key that points to zTo */
|
|
int nCol; /* Number of columns in this key */
|
|
struct sColMap { /* Mapping of columns in pFrom to columns in zTo */
|
|
int iFrom; /* Index of column in pFrom */
|
|
char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */
|
|
} *aCol; /* One entry for each of nCol column s */
|
|
u8 isDeferred; /* True if constraint checking is deferred till COMMIT */
|
|
u8 updateConf; /* How to resolve conflicts that occur on UPDATE */
|
|
u8 deleteConf; /* How to resolve conflicts that occur on DELETE */
|
|
u8 insertConf; /* How to resolve conflicts that occur on INSERT */
|
|
};
|
|
|
|
/*
|
|
** SQLite supports many different ways to resolve a constraint
|
|
** error. ROLLBACK processing means that a constraint violation
|
|
** causes the operation in process to fail and for the current transaction
|
|
** to be rolled back. ABORT processing means the operation in process
|
|
** fails and any prior changes from that one operation are backed out,
|
|
** but the transaction is not rolled back. FAIL processing means that
|
|
** the operation in progress stops and returns an error code. But prior
|
|
** changes due to the same operation are not backed out and no rollback
|
|
** occurs. IGNORE means that the particular row that caused the constraint
|
|
** error is not inserted or updated. Processing continues and no error
|
|
** is returned. REPLACE means that preexisting database rows that caused
|
|
** a UNIQUE constraint violation are removed so that the new insert or
|
|
** update can proceed. Processing continues and no error is reported.
|
|
**
|
|
** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys.
|
|
** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the
|
|
** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign
|
|
** key is set to NULL. CASCADE means that a DELETE or UPDATE of the
|
|
** referenced table row is propagated into the row that holds the
|
|
** foreign key.
|
|
**
|
|
** The following symbolic values are used to record which type
|
|
** of action to take.
|
|
*/
|
|
#define OE_None 0 /* There is no constraint to check */
|
|
#define OE_Rollback 1 /* Fail the operation and rollback the transaction */
|
|
#define OE_Abort 2 /* Back out changes but do no rollback transaction */
|
|
#define OE_Fail 3 /* Stop the operation but leave all prior changes */
|
|
#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */
|
|
#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */
|
|
|
|
#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */
|
|
#define OE_SetNull 7 /* Set the foreign key value to NULL */
|
|
#define OE_SetDflt 8 /* Set the foreign key value to its default */
|
|
#define OE_Cascade 9 /* Cascade the changes */
|
|
|
|
#define OE_Default 99 /* Do whatever the default action is */
|
|
|
|
|
|
/*
|
|
** An instance of the following structure is passed as the first
|
|
** argument to sqlite3VdbeKeyCompare and is used to control the
|
|
** comparison of the two index keys.
|
|
**
|
|
** If the KeyInfo.incrKey value is true and the comparison would
|
|
** otherwise be equal, then return a result as if the second key
|
|
** were larger.
|
|
*/
|
|
struct KeyInfo {
|
|
sqlite3 *db; /* The database connection */
|
|
u8 enc; /* Text encoding - one of the TEXT_Utf* values */
|
|
u8 incrKey; /* Increase 2nd key by epsilon before comparison */
|
|
int nField; /* Number of entries in aColl[] */
|
|
u8 *aSortOrder; /* If defined an aSortOrder[i] is true, sort DESC */
|
|
CollSeq *aColl[1]; /* Collating sequence for each term of the key */
|
|
};
|
|
|
|
/*
|
|
** Each SQL index is represented in memory by an
|
|
** instance of the following structure.
|
|
**
|
|
** The columns of the table that are to be indexed are described
|
|
** by the aiColumn[] field of this structure. For example, suppose
|
|
** we have the following table and index:
|
|
**
|
|
** CREATE TABLE Ex1(c1 int, c2 int, c3 text);
|
|
** CREATE INDEX Ex2 ON Ex1(c3,c1);
|
|
**
|
|
** In the Table structure describing Ex1, nCol==3 because there are
|
|
** three columns in the table. In the Index structure describing
|
|
** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed.
|
|
** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the
|
|
** first column to be indexed (c3) has an index of 2 in Ex1.aCol[].
|
|
** The second column to be indexed (c1) has an index of 0 in
|
|
** Ex1.aCol[], hence Ex2.aiColumn[1]==0.
|
|
**
|
|
** The Index.onError field determines whether or not the indexed columns
|
|
** must be unique and what to do if they are not. When Index.onError=OE_None,
|
|
** it means this is not a unique index. Otherwise it is a unique index
|
|
** and the value of Index.onError indicate the which conflict resolution
|
|
** algorithm to employ whenever an attempt is made to insert a non-unique
|
|
** element.
|
|
*/
|
|
struct Index {
|
|
char *zName; /* Name of this index */
|
|
int nColumn; /* Number of columns in the table used by this index */
|
|
int *aiColumn; /* Which columns are used by this index. 1st is 0 */
|
|
unsigned *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
|
|
Table *pTable; /* The SQL table being indexed */
|
|
int tnum; /* Page containing root of this index in database file */
|
|
u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
|
|
u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
|
|
char *zColAff; /* String defining the affinity of each column */
|
|
Index *pNext; /* The next index associated with the same table */
|
|
Schema *pSchema; /* Schema containing this index */
|
|
u8 *aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */
|
|
char **azColl; /* Array of collation sequence names for index */
|
|
};
|
|
|
|
/*
|
|
** Each token coming out of the lexer is an instance of
|
|
** this structure. Tokens are also used as part of an expression.
|
|
**
|
|
** Note if Token.z==0 then Token.dyn and Token.n are undefined and
|
|
** may contain random values. Do not make any assuptions about Token.dyn
|
|
** and Token.n when Token.z==0.
|
|
*/
|
|
struct Token {
|
|
const unsigned char *z; /* Text of the token. Not NULL-terminated! */
|
|
unsigned dyn : 1; /* True for malloced memory, false for static */
|
|
unsigned n : 31; /* Number of characters in this token */
|
|
};
|
|
|
|
/*
|
|
** An instance of this structure contains information needed to generate
|
|
** code for a SELECT that contains aggregate functions.
|
|
**
|
|
** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a
|
|
** pointer to this structure. The Expr.iColumn field is the index in
|
|
** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate
|
|
** code for that node.
|
|
**
|
|
** AggInfo.pGroupBy and AggInfo.aFunc.pExpr point to fields within the
|
|
** original Select structure that describes the SELECT statement. These
|
|
** fields do not need to be freed when deallocating the AggInfo structure.
|
|
*/
|
|
struct AggInfo {
|
|
u8 directMode; /* Direct rendering mode means take data directly
|
|
** from source tables rather than from accumulators */
|
|
u8 useSortingIdx; /* In direct mode, reference the sorting index rather
|
|
** than the source table */
|
|
int sortingIdx; /* Cursor number of the sorting index */
|
|
ExprList *pGroupBy; /* The group by clause */
|
|
int nSortingColumn; /* Number of columns in the sorting index */
|
|
struct AggInfo_col { /* For each column used in source tables */
|
|
Table *pTab; /* Source table */
|
|
int iTable; /* Cursor number of the source table */
|
|
int iColumn; /* Column number within the source table */
|
|
int iSorterColumn; /* Column number in the sorting index */
|
|
int iMem; /* Memory location that acts as accumulator */
|
|
Expr *pExpr; /* The original expression */
|
|
} *aCol;
|
|
int nColumn; /* Number of used entries in aCol[] */
|
|
int nColumnAlloc; /* Number of slots allocated for aCol[] */
|
|
int nAccumulator; /* Number of columns that show through to the output.
|
|
** Additional columns are used only as parameters to
|
|
** aggregate functions */
|
|
struct AggInfo_func { /* For each aggregate function */
|
|
Expr *pExpr; /* Expression encoding the function */
|
|
FuncDef *pFunc; /* The aggregate function implementation */
|
|
int iMem; /* Memory location that acts as accumulator */
|
|
int iDistinct; /* Ephermeral table used to enforce DISTINCT */
|
|
} *aFunc;
|
|
int nFunc; /* Number of entries in aFunc[] */
|
|
int nFuncAlloc; /* Number of slots allocated for aFunc[] */
|
|
};
|
|
|
|
/*
|
|
** Each node of an expression in the parse tree is an instance
|
|
** of this structure.
|
|
**
|
|
** Expr.op is the opcode. The integer parser token codes are reused
|
|
** as opcodes here. For example, the parser defines TK_GE to be an integer
|
|
** code representing the ">=" operator. This same integer code is reused
|
|
** to represent the greater-than-or-equal-to operator in the expression
|
|
** tree.
|
|
**
|
|
** Expr.pRight and Expr.pLeft are subexpressions. Expr.pList is a list
|
|
** of argument if the expression is a function.
|
|
**
|
|
** Expr.token is the operator token for this node. For some expressions
|
|
** that have subexpressions, Expr.token can be the complete text that gave
|
|
** rise to the Expr. In the latter case, the token is marked as being
|
|
** a compound token.
|
|
**
|
|
** An expression of the form ID or ID.ID refers to a column in a table.
|
|
** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is
|
|
** the integer cursor number of a VDBE cursor pointing to that table and
|
|
** Expr.iColumn is the column number for the specific column. If the
|
|
** expression is used as a result in an aggregate SELECT, then the
|
|
** value is also stored in the Expr.iAgg column in the aggregate so that
|
|
** it can be accessed after all aggregates are computed.
|
|
**
|
|
** If the expression is a function, the Expr.iTable is an integer code
|
|
** representing which function. If the expression is an unbound variable
|
|
** marker (a question mark character '?' in the original SQL) then the
|
|
** Expr.iTable holds the index number for that variable.
|
|
**
|
|
** If the expression is a subquery then Expr.iColumn holds an integer
|
|
** register number containing the result of the subquery. If the
|
|
** subquery gives a constant result, then iTable is -1. If the subquery
|
|
** gives a different answer at different times during statement processing
|
|
** then iTable is the address of a subroutine that computes the subquery.
|
|
**
|
|
** The Expr.pSelect field points to a SELECT statement. The SELECT might
|
|
** be the right operand of an IN operator. Or, if a scalar SELECT appears
|
|
** in an expression the opcode is TK_SELECT and Expr.pSelect is the only
|
|
** operand.
|
|
**
|
|
** If the Expr is of type OP_Column, and the table it is selecting from
|
|
** is a disk table or the "old.*" pseudo-table, then pTab points to the
|
|
** corresponding table definition.
|
|
*/
|
|
struct Expr {
|
|
u8 op; /* Operation performed by this node */
|
|
char affinity; /* The affinity of the column or 0 if not a column */
|
|
u16 flags; /* Various flags. See below */
|
|
CollSeq *pColl; /* The collation type of the column or 0 */
|
|
Expr *pLeft, *pRight; /* Left and right subnodes */
|
|
ExprList *pList; /* A list of expressions used as function arguments
|
|
** or in "<expr> IN (<expr-list)" */
|
|
Token token; /* An operand token */
|
|
Token span; /* Complete text of the expression */
|
|
int iTable, iColumn; /* When op==TK_COLUMN, then this expr node means the
|
|
** iColumn-th field of the iTable-th table. */
|
|
AggInfo *pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
|
|
int iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
|
|
int iRightJoinTable; /* If EP_FromJoin, the right table of the join */
|
|
Select *pSelect; /* When the expression is a sub-select. Also the
|
|
** right side of "<expr> IN (<select>)" */
|
|
Table *pTab; /* Table for OP_Column expressions. */
|
|
/* Schema *pSchema; */
|
|
#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
|
|
int nHeight; /* Height of the tree headed by this node */
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
** The following are the meanings of bits in the Expr.flags field.
|
|
*/
|
|
#define EP_FromJoin 0x01 /* Originated in ON or USING clause of a join */
|
|
#define EP_Agg 0x02 /* Contains one or more aggregate functions */
|
|
#define EP_Resolved 0x04 /* IDs have been resolved to COLUMNs */
|
|
#define EP_Error 0x08 /* Expression contains one or more errors */
|
|
#define EP_Distinct 0x10 /* Aggregate function with DISTINCT keyword */
|
|
#define EP_VarSelect 0x20 /* pSelect is correlated, not constant */
|
|
#define EP_Dequoted 0x40 /* True if the string has been dequoted */
|
|
#define EP_InfixFunc 0x80 /* True for an infix function: LIKE, GLOB, etc */
|
|
#define EP_ExpCollate 0x100 /* Collating sequence specified explicitly */
|
|
|
|
/*
|
|
** These macros can be used to test, set, or clear bits in the
|
|
** Expr.flags field.
|
|
*/
|
|
#define ExprHasProperty(E,P) (((E)->flags&(P))==(P))
|
|
#define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0)
|
|
#define ExprSetProperty(E,P) (E)->flags|=(P)
|
|
#define ExprClearProperty(E,P) (E)->flags&=~(P)
|
|
|
|
/*
|
|
** A list of expressions. Each expression may optionally have a
|
|
** name. An expr/name combination can be used in several ways, such
|
|
** as the list of "expr AS ID" fields following a "SELECT" or in the
|
|
** list of "ID = expr" items in an UPDATE. A list of expressions can
|
|
** also be used as the argument to a function, in which case the a.zName
|
|
** field is not used.
|
|
*/
|
|
struct ExprList {
|
|
int nExpr; /* Number of expressions on the list */
|
|
int nAlloc; /* Number of entries allocated below */
|
|
int iECursor; /* VDBE Cursor associated with this ExprList */
|
|
struct ExprList_item {
|
|
Expr *pExpr; /* The list of expressions */
|
|
char *zName; /* Token associated with this expression */
|
|
u8 sortOrder; /* 1 for DESC or 0 for ASC */
|
|
u8 isAgg; /* True if this is an aggregate like count(*) */
|
|
u8 done; /* A flag to indicate when processing is finished */
|
|
} *a; /* One entry for each expression */
|
|
};
|
|
|
|
/*
|
|
** An instance of this structure can hold a simple list of identifiers,
|
|
** such as the list "a,b,c" in the following statements:
|
|
**
|
|
** INSERT INTO t(a,b,c) VALUES ...;
|
|
** CREATE INDEX idx ON t(a,b,c);
|
|
** CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...;
|
|
**
|
|
** The IdList.a.idx field is used when the IdList represents the list of
|
|
** column names after a table name in an INSERT statement. In the statement
|
|
**
|
|
** INSERT INTO t(a,b,c) ...
|
|
**
|
|
** If "a" is the k-th column of table "t", then IdList.a[0].idx==k.
|
|
*/
|
|
struct IdList {
|
|
struct IdList_item {
|
|
char *zName; /* Name of the identifier */
|
|
int idx; /* Index in some Table.aCol[] of a column named zName */
|
|
} *a;
|
|
int nId; /* Number of identifiers on the list */
|
|
int nAlloc; /* Number of entries allocated for a[] below */
|
|
};
|
|
|
|
/*
|
|
** The bitmask datatype defined below is used for various optimizations.
|
|
**
|
|
** Changing this from a 64-bit to a 32-bit type limits the number of
|
|
** tables in a join to 32 instead of 64. But it also reduces the size
|
|
** of the library by 738 bytes on ix86.
|
|
*/
|
|
typedef u64 Bitmask;
|
|
|
|
/*
|
|
** The following structure describes the FROM clause of a SELECT statement.
|
|
** Each table or subquery in the FROM clause is a separate element of
|
|
** the SrcList.a[] array.
|
|
**
|
|
** With the addition of multiple database support, the following structure
|
|
** can also be used to describe a particular table such as the table that
|
|
** is modified by an INSERT, DELETE, or UPDATE statement. In standard SQL,
|
|
** such a table must be a simple name: ID. But in SQLite, the table can
|
|
** now be identified by a database name, a dot, then the table name: ID.ID.
|
|
**
|
|
** The jointype starts out showing the join type between the current table
|
|
** and the next table on the list. The parser builds the list this way.
|
|
** But sqlite3SrcListShiftJoinType() later shifts the jointypes so that each
|
|
** jointype expresses the join between the table and the previous table.
|
|
*/
|
|
struct SrcList {
|
|
i16 nSrc; /* Number of tables or subqueries in the FROM clause */
|
|
i16 nAlloc; /* Number of entries allocated in a[] below */
|
|
struct SrcList_item {
|
|
char *zDatabase; /* Name of database holding this table */
|
|
char *zName; /* Name of the table */
|
|
char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
|
|
Table *pTab; /* An SQL table corresponding to zName */
|
|
Select *pSelect; /* A SELECT statement used in place of a table name */
|
|
u8 isPopulated; /* Temporary table associated with SELECT is populated */
|
|
u8 jointype; /* Type of join between this able and the previous */
|
|
int iCursor; /* The VDBE cursor number used to access this table */
|
|
Expr *pOn; /* The ON clause of a join */
|
|
IdList *pUsing; /* The USING clause of a join */
|
|
Bitmask colUsed; /* Bit N (1<<N) set if column N or pTab is used */
|
|
} a[1]; /* One entry for each identifier on the list */
|
|
};
|
|
|
|
/*
|
|
** Permitted values of the SrcList.a.jointype field
|
|
*/
|
|
#define JT_INNER 0x0001 /* Any kind of inner or cross join */
|
|
#define JT_CROSS 0x0002 /* Explicit use of the CROSS keyword */
|
|
#define JT_NATURAL 0x0004 /* True for a "natural" join */
|
|
#define JT_LEFT 0x0008 /* Left outer join */
|
|
#define JT_RIGHT 0x0010 /* Right outer join */
|
|
#define JT_OUTER 0x0020 /* The "OUTER" keyword is present */
|
|
#define JT_ERROR 0x0040 /* unknown or unsupported join type */
|
|
|
|
/*
|
|
** For each nested loop in a WHERE clause implementation, the WhereInfo
|
|
** structure contains a single instance of this structure. This structure
|
|
** is intended to be private the the where.c module and should not be
|
|
** access or modified by other modules.
|
|
**
|
|
** The pIdxInfo and pBestIdx fields are used to help pick the best
|
|
** index on a virtual table. The pIdxInfo pointer contains indexing
|
|
** information for the i-th table in the FROM clause before reordering.
|
|
** All the pIdxInfo pointers are freed by whereInfoFree() in where.c.
|
|
** The pBestIdx pointer is a copy of pIdxInfo for the i-th table after
|
|
** FROM clause ordering. This is a little confusing so I will repeat
|
|
** it in different words. WhereInfo.a[i].pIdxInfo is index information
|
|
** for WhereInfo.pTabList.a[i]. WhereInfo.a[i].pBestInfo is the
|
|
** index information for the i-th loop of the join. pBestInfo is always
|
|
** either NULL or a copy of some pIdxInfo. So for cleanup it is
|
|
** sufficient to free all of the pIdxInfo pointers.
|
|
**
|
|
*/
|
|
struct WhereLevel {
|
|
int iFrom; /* Which entry in the FROM clause */
|
|
int flags; /* Flags associated with this level */
|
|
int iMem; /* First memory cell used by this level */
|
|
int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */
|
|
Index *pIdx; /* Index used. NULL if no index */
|
|
int iTabCur; /* The VDBE cursor used to access the table */
|
|
int iIdxCur; /* The VDBE cursor used to acesss pIdx */
|
|
int brk; /* Jump here to break out of the loop */
|
|
int nxt; /* Jump here to start the next IN combination */
|
|
int cont; /* Jump here to continue with the next loop cycle */
|
|
int top; /* First instruction of interior of the loop */
|
|
int op, p1, p2; /* Opcode used to terminate the loop */
|
|
int nEq; /* Number of == or IN constraints on this loop */
|
|
int nIn; /* Number of IN operators constraining this loop */
|
|
struct InLoop {
|
|
int iCur; /* The VDBE cursor used by this IN operator */
|
|
int topAddr; /* Top of the IN loop */
|
|
} *aInLoop; /* Information about each nested IN operator */
|
|
sqlite3_index_info *pBestIdx; /* Index information for this level */
|
|
|
|
/* The following field is really not part of the current level. But
|
|
** we need a place to cache index information for each table in the
|
|
** FROM clause and the WhereLevel structure is a convenient place.
|
|
*/
|
|
sqlite3_index_info *pIdxInfo; /* Index info for n-th source table */
|
|
};
|
|
|
|
/*
|
|
** The WHERE clause processing routine has two halves. The
|
|
** first part does the start of the WHERE loop and the second
|
|
** half does the tail of the WHERE loop. An instance of
|
|
** this structure is returned by the first half and passed
|
|
** into the second half to give some continuity.
|
|
*/
|
|
struct WhereInfo {
|
|
Parse *pParse;
|
|
SrcList *pTabList; /* List of tables in the join */
|
|
int iTop; /* The very beginning of the WHERE loop */
|
|
int iContinue; /* Jump here to continue with next record */
|
|
int iBreak; /* Jump here to break out of the loop */
|
|
int nLevel; /* Number of nested loop */
|
|
sqlite3_index_info **apInfo; /* Array of pointers to index info structures */
|
|
WhereLevel a[1]; /* Information about each nest loop in the WHERE */
|
|
};
|
|
|
|
/*
|
|
** A NameContext defines a context in which to resolve table and column
|
|
** names. The context consists of a list of tables (the pSrcList) field and
|
|
** a list of named expression (pEList). The named expression list may
|
|
** be NULL. The pSrc corresponds to the FROM clause of a SELECT or
|
|
** to the table being operated on by INSERT, UPDATE, or DELETE. The
|
|
** pEList corresponds to the result set of a SELECT and is NULL for
|
|
** other statements.
|
|
**
|
|
** NameContexts can be nested. When resolving names, the inner-most
|
|
** context is searched first. If no match is found, the next outer
|
|
** context is checked. If there is still no match, the next context
|
|
** is checked. This process continues until either a match is found
|
|
** or all contexts are check. When a match is found, the nRef member of
|
|
** the context containing the match is incremented.
|
|
**
|
|
** Each subquery gets a new NameContext. The pNext field points to the
|
|
** NameContext in the parent query. Thus the process of scanning the
|
|
** NameContext list corresponds to searching through successively outer
|
|
** subqueries looking for a match.
|
|
*/
|
|
struct NameContext {
|
|
Parse *pParse; /* The parser */
|
|
SrcList *pSrcList; /* One or more tables used to resolve names */
|
|
ExprList *pEList; /* Optional list of named expressions */
|
|
int nRef; /* Number of names resolved by this context */
|
|
int nErr; /* Number of errors encountered while resolving names */
|
|
u8 allowAgg; /* Aggregate functions allowed here */
|
|
u8 hasAgg; /* True if aggregates are seen */
|
|
u8 isCheck; /* True if resolving names in a CHECK constraint */
|
|
int nDepth; /* Depth of subquery recursion. 1 for no recursion */
|
|
AggInfo *pAggInfo; /* Information about aggregates at this level */
|
|
NameContext *pNext; /* Next outer name context. NULL for outermost */
|
|
};
|
|
|
|
/*
|
|
** An instance of the following structure contains all information
|
|
** needed to generate code for a single SELECT statement.
|
|
**
|
|
** nLimit is set to -1 if there is no LIMIT clause. nOffset is set to 0.
|
|
** If there is a LIMIT clause, the parser sets nLimit to the value of the
|
|
** limit and nOffset to the value of the offset (or 0 if there is not
|
|
** offset). But later on, nLimit and nOffset become the memory locations
|
|
** in the VDBE that record the limit and offset counters.
|
|
**
|
|
** addrOpenEphm[] entries contain the address of OP_OpenEphemeral opcodes.
|
|
** These addresses must be stored so that we can go back and fill in
|
|
** the P3_KEYINFO and P2 parameters later. Neither the KeyInfo nor
|
|
** the number of columns in P2 can be computed at the same time
|
|
** as the OP_OpenEphm instruction is coded because not
|
|
** enough information about the compound query is known at that point.
|
|
** The KeyInfo for addrOpenTran[0] and [1] contains collating sequences
|
|
** for the result set. The KeyInfo for addrOpenTran[2] contains collating
|
|
** sequences for the ORDER BY clause.
|
|
*/
|
|
struct Select {
|
|
ExprList *pEList; /* The fields of the result */
|
|
u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
|
|
u8 isDistinct; /* True if the DISTINCT keyword is present */
|
|
u8 isResolved; /* True once sqlite3SelectResolve() has run. */
|
|
u8 isAgg; /* True if this is an aggregate query */
|
|
u8 usesEphm; /* True if uses an OpenEphemeral opcode */
|
|
u8 disallowOrderBy; /* Do not allow an ORDER BY to be attached if TRUE */
|
|
char affinity; /* MakeRecord with this affinity for SRT_Set */
|
|
SrcList *pSrc; /* The FROM clause */
|
|
Expr *pWhere; /* The WHERE clause */
|
|
ExprList *pGroupBy; /* The GROUP BY clause */
|
|
Expr *pHaving; /* The HAVING clause */
|
|
ExprList *pOrderBy; /* The ORDER BY clause */
|
|
Select *pPrior; /* Prior select in a compound select statement */
|
|
Select *pRightmost; /* Right-most select in a compound select statement */
|
|
Expr *pLimit; /* LIMIT expression. NULL means not used. */
|
|
Expr *pOffset; /* OFFSET expression. NULL means not used. */
|
|
int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */
|
|
int addrOpenEphm[3]; /* OP_OpenEphem opcodes related to this select */
|
|
};
|
|
|
|
/*
|
|
** The results of a select can be distributed in several ways.
|
|
*/
|
|
#define SRT_Union 1 /* Store result as keys in an index */
|
|
#define SRT_Except 2 /* Remove result from a UNION index */
|
|
#define SRT_Discard 3 /* Do not save the results anywhere */
|
|
|
|
/* The ORDER BY clause is ignored for all of the above */
|
|
#define IgnorableOrderby(X) (X<=SRT_Discard)
|
|
|
|
#define SRT_Callback 4 /* Invoke a callback with each row of result */
|
|
#define SRT_Mem 5 /* Store result in a memory cell */
|
|
#define SRT_Set 6 /* Store non-null results as keys in an index */
|
|
#define SRT_Table 7 /* Store result as data with an automatic rowid */
|
|
#define SRT_EphemTab 8 /* Create transient tab and store like SRT_Table */
|
|
#define SRT_Subroutine 9 /* Call a subroutine to handle results */
|
|
#define SRT_Exists 10 /* Store 1 if the result is not empty */
|
|
|
|
/*
|
|
** An SQL parser context. A copy of this structure is passed through
|
|
** the parser and down into all the parser action routine in order to
|
|
** carry around information that is global to the entire parse.
|
|
**
|
|
** The structure is divided into two parts. When the parser and code
|
|
** generate call themselves recursively, the first part of the structure
|
|
** is constant but the second part is reset at the beginning and end of
|
|
** each recursion.
|
|
**
|
|
** The nTableLock and aTableLock variables are only used if the shared-cache
|
|
** feature is enabled (if sqlite3Tsd()->useSharedData is true). They are
|
|
** used to store the set of table-locks required by the statement being
|
|
** compiled. Function sqlite3TableLock() is used to add entries to the
|
|
** list.
|
|
*/
|
|
struct Parse {
|
|
sqlite3 *db; /* The main database structure */
|
|
int rc; /* Return code from execution */
|
|
char *zErrMsg; /* An error message */
|
|
Vdbe *pVdbe; /* An engine for executing database bytecode */
|
|
u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
|
|
u8 nameClash; /* A permanent table name clashes with temp table name */
|
|
u8 checkSchema; /* Causes schema cookie check after an error */
|
|
u8 nested; /* Number of nested calls to the parser/code generator */
|
|
u8 parseError; /* True after a parsing error. Ticket #1794 */
|
|
int nErr; /* Number of errors seen */
|
|
int nTab; /* Number of previously allocated VDBE cursors */
|
|
int nMem; /* Number of memory cells used so far */
|
|
int nSet; /* Number of sets used so far */
|
|
int ckOffset; /* Stack offset to data used by CHECK constraints */
|
|
u32 writeMask; /* Start a write transaction on these databases */
|
|
u32 cookieMask; /* Bitmask of schema verified databases */
|
|
int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
|
|
int cookieValue[SQLITE_MAX_ATTACHED+2]; /* Values of cookies to verify */
|
|
#ifndef SQLITE_OMIT_SHARED_CACHE
|
|
int nTableLock; /* Number of locks in aTableLock */
|
|
TableLock *aTableLock; /* Required table locks for shared-cache mode */
|
|
#endif
|
|
|
|
/* Above is constant between recursions. Below is reset before and after
|
|
** each recursion */
|
|
|
|
int nVar; /* Number of '?' variables seen in the SQL so far */
|
|
int nVarExpr; /* Number of used slots in apVarExpr[] */
|
|
int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
|
|
Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
|
|
u8 explain; /* True if the EXPLAIN flag is found on the query */
|
|
Token sErrToken; /* The token at which the error occurred */
|
|
Token sNameToken; /* Token with unqualified schema object name */
|
|
Token sLastToken; /* The last token parsed */
|
|
const char *zSql; /* All SQL text */
|
|
const char *zTail; /* All SQL text past the last semicolon parsed */
|
|
Table *pNewTable; /* A table being constructed by CREATE TABLE */
|
|
Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
|
|
TriggerStack *trigStack; /* Trigger actions being coded */
|
|
const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
|
|
#ifndef SQLITE_OMIT_VIRTUALTABLE
|
|
Token sArg; /* Complete text of a module argument */
|
|
u8 declareVtab; /* True if inside sqlite3_declare_vtab() */
|
|
Table *pVirtualLock; /* Require virtual table lock on this table */
|
|
#endif
|
|
#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
|
|
int nHeight; /* Expression tree height of current sub-select */
|
|
#endif
|
|
};
|
|
|
|
#ifdef SQLITE_OMIT_VIRTUALTABLE
|
|
#define IN_DECLARE_VTAB 0
|
|
#else
|
|
#define IN_DECLARE_VTAB (pParse->declareVtab)
|
|
#endif
|
|
|
|
/*
|
|
** An instance of the following structure can be declared on a stack and used
|
|
** to save the Parse.zAuthContext value so that it can be restored later.
|
|
*/
|
|
struct AuthContext {
|
|
const char *zAuthContext; /* Put saved Parse.zAuthContext here */
|
|
Parse *pParse; /* The Parse structure */
|
|
};
|
|
|
|
/*
|
|
** Bitfield flags for P2 value in OP_Insert and OP_Delete
|
|
*/
|
|
#define OPFLAG_NCHANGE 1 /* Set to update db->nChange */
|
|
#define OPFLAG_LASTROWID 2 /* Set to update db->lastRowid */
|
|
#define OPFLAG_ISUPDATE 4 /* This OP_Insert is an sql UPDATE */
|
|
#define OPFLAG_APPEND 8 /* This is likely to be an append */
|
|
|
|
/*
|
|
* Each trigger present in the database schema is stored as an instance of
|
|
* struct Trigger.
|
|
*
|
|
* Pointers to instances of struct Trigger are stored in two ways.
|
|
* 1. In the "trigHash" hash table (part of the sqlite3* that represents the
|
|
* database). This allows Trigger structures to be retrieved by name.
|
|
* 2. All triggers associated with a single table form a linked list, using the
|
|
* pNext member of struct Trigger. A pointer to the first element of the
|
|
* linked list is stored as the "pTrigger" member of the associated
|
|
* struct Table.
|
|
*
|
|
* The "step_list" member points to the first element of a linked list
|
|
* containing the SQL statements specified as the trigger program.
|
|
*/
|
|
struct Trigger {
|
|
char *name; /* The name of the trigger */
|
|
char *table; /* The table or view to which the trigger applies */
|
|
u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
|
|
u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
|
|
Expr *pWhen; /* The WHEN clause of the expresion (may be NULL) */
|
|
IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger,
|
|
the <column-list> is stored here */
|
|
Token nameToken; /* Token containing zName. Use during parsing only */
|
|
Schema *pSchema; /* Schema containing the trigger */
|
|
Schema *pTabSchema; /* Schema containing the table */
|
|
TriggerStep *step_list; /* Link list of trigger program steps */
|
|
Trigger *pNext; /* Next trigger associated with the table */
|
|
};
|
|
|
|
/*
|
|
** A trigger is either a BEFORE or an AFTER trigger. The following constants
|
|
** determine which.
|
|
**
|
|
** If there are multiple triggers, you might of some BEFORE and some AFTER.
|
|
** In that cases, the constants below can be ORed together.
|
|
*/
|
|
#define TRIGGER_BEFORE 1
|
|
#define TRIGGER_AFTER 2
|
|
|
|
/*
|
|
* An instance of struct TriggerStep is used to store a single SQL statement
|
|
* that is a part of a trigger-program.
|
|
*
|
|
* Instances of struct TriggerStep are stored in a singly linked list (linked
|
|
* using the "pNext" member) referenced by the "step_list" member of the
|
|
* associated struct Trigger instance. The first element of the linked list is
|
|
* the first step of the trigger-program.
|
|
*
|
|
* The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or
|
|
* "SELECT" statement. The meanings of the other members is determined by the
|
|
* value of "op" as follows:
|
|
*
|
|
* (op == TK_INSERT)
|
|
* orconf -> stores the ON CONFLICT algorithm
|
|
* pSelect -> If this is an INSERT INTO ... SELECT ... statement, then
|
|
* this stores a pointer to the SELECT statement. Otherwise NULL.
|
|
* target -> A token holding the name of the table to insert into.
|
|
* pExprList -> If this is an INSERT INTO ... VALUES ... statement, then
|
|
* this stores values to be inserted. Otherwise NULL.
|
|
* pIdList -> If this is an INSERT INTO ... (<column-names>) VALUES ...
|
|
* statement, then this stores the column-names to be
|
|
* inserted into.
|
|
*
|
|
* (op == TK_DELETE)
|
|
* target -> A token holding the name of the table to delete from.
|
|
* pWhere -> The WHERE clause of the DELETE statement if one is specified.
|
|
* Otherwise NULL.
|
|
*
|
|
* (op == TK_UPDATE)
|
|
* target -> A token holding the name of the table to update rows of.
|
|
* pWhere -> The WHERE clause of the UPDATE statement if one is specified.
|
|
* Otherwise NULL.
|
|
* pExprList -> A list of the columns to update and the expressions to update
|
|
* them to. See sqlite3Update() documentation of "pChanges"
|
|
* argument.
|
|
*
|
|
*/
|
|
struct TriggerStep {
|
|
int op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */
|
|
int orconf; /* OE_Rollback etc. */
|
|
Trigger *pTrig; /* The trigger that this step is a part of */
|
|
|
|
Select *pSelect; /* Valid for SELECT and sometimes
|
|
INSERT steps (when pExprList == 0) */
|
|
Token target; /* Valid for DELETE, UPDATE, INSERT steps */
|
|
Expr *pWhere; /* Valid for DELETE, UPDATE steps */
|
|
ExprList *pExprList; /* Valid for UPDATE statements and sometimes
|
|
INSERT steps (when pSelect == 0) */
|
|
IdList *pIdList; /* Valid for INSERT statements only */
|
|
TriggerStep *pNext; /* Next in the link-list */
|
|
TriggerStep *pLast; /* Last element in link-list. Valid for 1st elem only */
|
|
};
|
|
|
|
/*
|
|
* An instance of struct TriggerStack stores information required during code
|
|
* generation of a single trigger program. While the trigger program is being
|
|
* coded, its associated TriggerStack instance is pointed to by the
|
|
* "pTriggerStack" member of the Parse structure.
|
|
*
|
|
* The pTab member points to the table that triggers are being coded on. The
|
|
* newIdx member contains the index of the vdbe cursor that points at the temp
|
|
* table that stores the new.* references. If new.* references are not valid
|
|
* for the trigger being coded (for example an ON DELETE trigger), then newIdx
|
|
* is set to -1. The oldIdx member is analogous to newIdx, for old.* references.
|
|
*
|
|
* The ON CONFLICT policy to be used for the trigger program steps is stored
|
|
* as the orconf member. If this is OE_Default, then the ON CONFLICT clause
|
|
* specified for individual triggers steps is used.
|
|
*
|
|
* struct TriggerStack has a "pNext" member, to allow linked lists to be
|
|
* constructed. When coding nested triggers (triggers fired by other triggers)
|
|
* each nested trigger stores its parent trigger's TriggerStack as the "pNext"
|
|
* pointer. Once the nested trigger has been coded, the pNext value is restored
|
|
* to the pTriggerStack member of the Parse stucture and coding of the parent
|
|
* trigger continues.
|
|
*
|
|
* Before a nested trigger is coded, the linked list pointed to by the
|
|
* pTriggerStack is scanned to ensure that the trigger is not about to be coded
|
|
* recursively. If this condition is detected, the nested trigger is not coded.
|
|
*/
|
|
struct TriggerStack {
|
|
Table *pTab; /* Table that triggers are currently being coded on */
|
|
int newIdx; /* Index of vdbe cursor to "new" temp table */
|
|
int oldIdx; /* Index of vdbe cursor to "old" temp table */
|
|
int orconf; /* Current orconf policy */
|
|
int ignoreJump; /* where to jump to for a RAISE(IGNORE) */
|
|
Trigger *pTrigger; /* The trigger currently being coded */
|
|
TriggerStack *pNext; /* Next trigger down on the trigger stack */
|
|
};
|
|
|
|
/*
|
|
** The following structure contains information used by the sqliteFix...
|
|
** routines as they walk the parse tree to make database references
|
|
** explicit.
|
|
*/
|
|
typedef struct DbFixer DbFixer;
|
|
struct DbFixer {
|
|
Parse *pParse; /* The parsing context. Error messages written here */
|
|
const char *zDb; /* Make sure all objects are contained in this database */
|
|
const char *zType; /* Type of the container - used for error messages */
|
|
const Token *pName; /* Name of the container - used for error messages */
|
|
};
|
|
|
|
/*
|
|
** A pointer to this structure is used to communicate information
|
|
** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
|
|
*/
|
|
typedef struct {
|
|
sqlite3 *db; /* The database being initialized */
|
|
int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */
|
|
char **pzErrMsg; /* Error message stored here */
|
|
int rc; /* Result code stored here */
|
|
} InitData;
|
|
|
|
/*
|
|
** Assuming zIn points to the first byte of a UTF-8 character,
|
|
** advance zIn to point to the first byte of the next UTF-8 character.
|
|
*/
|
|
#define SQLITE_SKIP_UTF8(zIn) { \
|
|
if( (*(zIn++))>=0xc0 ){ \
|
|
while( (*zIn & 0xc0)==0x80 ){ zIn++; } \
|
|
} \
|
|
}
|
|
|
|
/*
|
|
** The SQLITE_CORRUPT_BKPT macro can be either a constant (for production
|
|
** builds) or a function call (for debugging). If it is a function call,
|
|
** it allows the operator to set a breakpoint at the spot where database
|
|
** corruption is first detected.
|
|
*/
|
|
#ifdef SQLITE_DEBUG
|
|
int sqlite3Corrupt(void);
|
|
# define SQLITE_CORRUPT_BKPT sqlite3Corrupt()
|
|
#else
|
|
# define SQLITE_CORRUPT_BKPT SQLITE_CORRUPT
|
|
#endif
|
|
|
|
/*
|
|
** Internal function prototypes
|
|
*/
|
|
int sqlite3StrICmp(const char *, const char *);
|
|
int sqlite3StrNICmp(const char *, const char *, int);
|
|
int sqlite3IsNumber(const char*, int*, u8);
|
|
|
|
void *sqlite3MallocZero(unsigned);
|
|
void *sqlite3DbMallocZero(sqlite3*, unsigned);
|
|
void *sqlite3DbMallocRaw(sqlite3*, unsigned);
|
|
char *sqlite3StrDup(const char*);
|
|
char *sqlite3StrNDup(const char*, int);
|
|
char *sqlite3DbStrDup(sqlite3*,const char*);
|
|
char *sqlite3DbStrNDup(sqlite3*,const char*, int);
|
|
void *sqlite3DbReallocOrFree(sqlite3 *, void *, int);
|
|
void *sqlite3DbRealloc(sqlite3 *, void *, int);
|
|
|
|
char *sqlite3MPrintf(sqlite3*,const char*, ...);
|
|
char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
|
|
#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
|
|
void sqlite3DebugPrintf(const char*, ...);
|
|
void *sqlite3TextToPtr(const char*);
|
|
#endif
|
|
void sqlite3SetString(char **, ...);
|
|
void sqlite3ErrorMsg(Parse*, const char*, ...);
|
|
void sqlite3ErrorClear(Parse*);
|
|
void sqlite3Dequote(char*);
|
|
void sqlite3DequoteExpr(sqlite3*, Expr*);
|
|
int sqlite3KeywordCode(const unsigned char*, int);
|
|
int sqlite3RunParser(Parse*, const char*, char **);
|
|
void sqlite3FinishCoding(Parse*);
|
|
Expr *sqlite3Expr(sqlite3*, int, Expr*, Expr*, const Token*);
|
|
Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*, const Token*);
|
|
Expr *sqlite3RegisterExpr(Parse*,Token*);
|
|
Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*);
|
|
void sqlite3ExprSpan(Expr*,Token*,Token*);
|
|
Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*);
|
|
void sqlite3ExprAssignVarNumber(Parse*, Expr*);
|
|
void sqlite3ExprDelete(Expr*);
|
|
ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*,Token*);
|
|
void sqlite3ExprListDelete(ExprList*);
|
|
int sqlite3Init(sqlite3*, char**);
|
|
int sqlite3InitCallback(void*, int, char**, char**);
|
|
void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
|
|
void sqlite3ResetInternalSchema(sqlite3*, int);
|
|
void sqlite3BeginParse(Parse*,int);
|
|
void sqlite3CommitInternalChanges(sqlite3*);
|
|
Table *sqlite3ResultSetOfSelect(Parse*,char*,Select*);
|
|
void sqlite3OpenMasterTable(Parse *, int);
|
|
void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);
|
|
void sqlite3AddColumn(Parse*,Token*);
|
|
void sqlite3AddNotNull(Parse*, int);
|
|
void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
|
|
void sqlite3AddCheckConstraint(Parse*, Expr*);
|
|
void sqlite3AddColumnType(Parse*,Token*);
|
|
void sqlite3AddDefaultValue(Parse*,Expr*);
|
|
void sqlite3AddCollateType(Parse*, const char*, int);
|
|
void sqlite3EndTable(Parse*,Token*,Token*,Select*);
|
|
|
|
void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int,int);
|
|
|
|
#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE)
|
|
int sqlite3ViewGetColumnNames(Parse*,Table*);
|
|
#else
|
|
# define sqlite3ViewGetColumnNames(A,B) 0
|
|
#endif
|
|
|
|
void sqlite3DropTable(Parse*, SrcList*, int, int);
|
|
void sqlite3DeleteTable(Table*);
|
|
void sqlite3Insert(Parse*, SrcList*, ExprList*, Select*, IdList*, int);
|
|
void *sqlite3ArrayAllocate(sqlite3*,void*,int,int,int*,int*,int*);
|
|
IdList *sqlite3IdListAppend(sqlite3*, IdList*, Token*);
|
|
int sqlite3IdListIndex(IdList*,const char*);
|
|
SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*);
|
|
SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, Token*,
|
|
Select*, Expr*, IdList*);
|
|
void sqlite3SrcListShiftJoinType(SrcList*);
|
|
void sqlite3SrcListAssignCursors(Parse*, SrcList*);
|
|
void sqlite3IdListDelete(IdList*);
|
|
void sqlite3SrcListDelete(SrcList*);
|
|
void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
|
|
Token*, int, int);
|
|
void sqlite3DropIndex(Parse*, SrcList*, int);
|
|
int sqlite3Select(Parse*, Select*, int, int, Select*, int, int*, char *aff);
|
|
Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*,
|
|
Expr*,ExprList*,int,Expr*,Expr*);
|
|
void sqlite3SelectDelete(Select*);
|
|
Table *sqlite3SrcListLookup(Parse*, SrcList*);
|
|
int sqlite3IsReadOnly(Parse*, Table*, int);
|
|
void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int);
|
|
void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
|
|
void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
|
|
WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**);
|
|
void sqlite3WhereEnd(WhereInfo*);
|
|
void sqlite3ExprCodeGetColumn(Vdbe*, Table*, int, int);
|
|
void sqlite3ExprCode(Parse*, Expr*);
|
|
void sqlite3ExprCodeAndCache(Parse*, Expr*);
|
|
int sqlite3ExprCodeExprList(Parse*, ExprList*);
|
|
void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
|
|
void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
|
|
Table *sqlite3FindTable(sqlite3*,const char*, const char*);
|
|
Table *sqlite3LocateTable(Parse*,const char*, const char*);
|
|
Index *sqlite3FindIndex(sqlite3*,const char*, const char*);
|
|
void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*);
|
|
void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*);
|
|
void sqlite3Vacuum(Parse*);
|
|
int sqlite3RunVacuum(char**, sqlite3*);
|
|
char *sqlite3NameFromToken(sqlite3*, Token*);
|
|
int sqlite3ExprCompare(Expr*, Expr*);
|
|
int sqlite3ExprResolveNames(NameContext *, Expr *);
|
|
int sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
|
|
int sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
|
|
Vdbe *sqlite3GetVdbe(Parse*);
|
|
Expr *sqlite3CreateIdExpr(Parse *, const char*);
|
|
void sqlite3Randomness(int, void*);
|
|
void sqlite3RollbackAll(sqlite3*);
|
|
void sqlite3CodeVerifySchema(Parse*, int);
|
|
void sqlite3BeginTransaction(Parse*, int);
|
|
void sqlite3CommitTransaction(Parse*);
|
|
void sqlite3RollbackTransaction(Parse*);
|
|
int sqlite3ExprIsConstant(Expr*);
|
|
int sqlite3ExprIsConstantNotJoin(Expr*);
|
|
int sqlite3ExprIsConstantOrFunction(Expr*);
|
|
int sqlite3ExprIsInteger(Expr*, int*);
|
|
int sqlite3IsRowid(const char*);
|
|
void sqlite3GenerateRowDelete(sqlite3*, Vdbe*, Table*, int, int);
|
|
void sqlite3GenerateRowIndexDelete(Vdbe*, Table*, int, char*);
|
|
void sqlite3GenerateIndexKey(Vdbe*, Index*, int);
|
|
void sqlite3GenerateConstraintChecks(Parse*,Table*,int,char*,int,int,int,int);
|
|
void sqlite3CompleteInsertion(Parse*, Table*, int, char*, int, int, int, int);
|
|
void sqlite3OpenTableAndIndices(Parse*, Table*, int, int);
|
|
void sqlite3BeginWriteOperation(Parse*, int, int);
|
|
Expr *sqlite3ExprDup(sqlite3*,Expr*);
|
|
void sqlite3TokenCopy(sqlite3*,Token*, Token*);
|
|
ExprList *sqlite3ExprListDup(sqlite3*,ExprList*);
|
|
SrcList *sqlite3SrcListDup(sqlite3*,SrcList*);
|
|
IdList *sqlite3IdListDup(sqlite3*,IdList*);
|
|
Select *sqlite3SelectDup(sqlite3*,Select*);
|
|
FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,int);
|
|
void sqlite3RegisterBuiltinFunctions(sqlite3*);
|
|
void sqlite3RegisterDateTimeFunctions(sqlite3*);
|
|
int sqlite3SafetyOn(sqlite3*);
|
|
int sqlite3SafetyOff(sqlite3*);
|
|
int sqlite3SafetyCheck(sqlite3*);
|
|
void sqlite3ChangeCookie(sqlite3*, Vdbe*, int);
|
|
|
|
#ifndef SQLITE_OMIT_TRIGGER
|
|
void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
|
|
Expr*,int, int);
|
|
void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
|
|
void sqlite3DropTrigger(Parse*, SrcList*, int);
|
|
void sqlite3DropTriggerPtr(Parse*, Trigger*);
|
|
int sqlite3TriggersExist(Parse*, Table*, int, ExprList*);
|
|
int sqlite3CodeRowTrigger(Parse*, int, ExprList*, int, Table *, int, int,
|
|
int, int);
|
|
void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
|
|
void sqlite3DeleteTriggerStep(TriggerStep*);
|
|
TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*);
|
|
TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*,
|
|
ExprList*,Select*,int);
|
|
TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, int);
|
|
TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*);
|
|
void sqlite3DeleteTrigger(Trigger*);
|
|
void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
|
|
#else
|
|
# define sqlite3TriggersExist(A,B,C,D,E,F) 0
|
|
# define sqlite3DeleteTrigger(A)
|
|
# define sqlite3DropTriggerPtr(A,B)
|
|
# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
|
|
# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I) 0
|
|
#endif
|
|
|
|
int sqlite3JoinType(Parse*, Token*, Token*, Token*);
|
|
void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
|
|
void sqlite3DeferForeignKey(Parse*, int);
|
|
#ifndef SQLITE_OMIT_AUTHORIZATION
|
|
void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
|
|
int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*);
|
|
void sqlite3AuthContextPush(Parse*, AuthContext*, const char*);
|
|
void sqlite3AuthContextPop(AuthContext*);
|
|
#else
|
|
# define sqlite3AuthRead(a,b,c)
|
|
# define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK
|
|
# define sqlite3AuthContextPush(a,b,c)
|
|
# define sqlite3AuthContextPop(a) ((void)(a))
|
|
#endif
|
|
void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
|
|
void sqlite3Detach(Parse*, Expr*);
|
|
int sqlite3BtreeFactory(const sqlite3 *db, const char *zFilename,
|
|
int omitJournal, int nCache, int flags, Btree **ppBtree);
|
|
int sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
|
|
int sqlite3FixSrcList(DbFixer*, SrcList*);
|
|
int sqlite3FixSelect(DbFixer*, Select*);
|
|
int sqlite3FixExpr(DbFixer*, Expr*);
|
|
int sqlite3FixExprList(DbFixer*, ExprList*);
|
|
int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
|
|
int sqlite3AtoF(const char *z, double*);
|
|
char *sqlite3_snprintf(int,char*,const char*,...);
|
|
int sqlite3GetInt32(const char *, int*);
|
|
int sqlite3FitsIn64Bits(const char *);
|
|
int sqlite3Utf16ByteLen(const void *pData, int nChar);
|
|
int sqlite3Utf8CharLen(const char *pData, int nByte);
|
|
int sqlite3Utf8Read(const u8*, const u8*, const u8**);
|
|
int sqlite3PutVarint(unsigned char *, u64);
|
|
int sqlite3GetVarint(const unsigned char *, u64 *);
|
|
int sqlite3GetVarint32(const unsigned char *, u32 *);
|
|
int sqlite3VarintLen(u64 v);
|
|
void sqlite3IndexAffinityStr(Vdbe *, Index *);
|
|
void sqlite3TableAffinityStr(Vdbe *, Table *);
|
|
char sqlite3CompareAffinity(Expr *pExpr, char aff2);
|
|
int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
|
|
char sqlite3ExprAffinity(Expr *pExpr);
|
|
int sqlite3Atoi64(const char*, i64*);
|
|
void sqlite3Error(sqlite3*, int, const char*,...);
|
|
void *sqlite3HexToBlob(sqlite3*, const char *z);
|
|
int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
|
|
const char *sqlite3ErrStr(int);
|
|
int sqlite3ReadSchema(Parse *pParse);
|
|
CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char *,int,int);
|
|
CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName, int nName);
|
|
CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
|
|
Expr *sqlite3ExprSetColl(Parse *pParse, Expr *, Token *);
|
|
int sqlite3CheckCollSeq(Parse *, CollSeq *);
|
|
int sqlite3CheckObjectName(Parse *, const char *);
|
|
void sqlite3VdbeSetChanges(sqlite3 *, int);
|
|
|
|
const void *sqlite3ValueText(sqlite3_value*, u8);
|
|
int sqlite3ValueBytes(sqlite3_value*, u8);
|
|
void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8,
|
|
void(*)(void*));
|
|
void sqlite3ValueFree(sqlite3_value*);
|
|
sqlite3_value *sqlite3ValueNew(sqlite3 *);
|
|
char *sqlite3Utf16to8(sqlite3 *, const void*, int);
|
|
int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
|
|
void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);
|
|
#ifndef SQLITE_AMALGAMATION
|
|
extern const unsigned char sqlite3UpperToLower[];
|
|
#endif
|
|
void sqlite3RootPageMoved(Db*, int, int);
|
|
void sqlite3Reindex(Parse*, Token*, Token*);
|
|
void sqlite3AlterFunctions(sqlite3*);
|
|
void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
|
|
int sqlite3GetToken(const unsigned char *, int *);
|
|
void sqlite3NestedParse(Parse*, const char*, ...);
|
|
void sqlite3ExpirePreparedStatements(sqlite3*);
|
|
void sqlite3CodeSubselect(Parse *, Expr *);
|
|
int sqlite3SelectResolve(Parse *, Select *, NameContext *);
|
|
void sqlite3ColumnDefault(Vdbe *, Table *, int);
|
|
void sqlite3AlterFinishAddColumn(Parse *, Token *);
|
|
void sqlite3AlterBeginAddColumn(Parse *, SrcList *);
|
|
CollSeq *sqlite3GetCollSeq(sqlite3*, CollSeq *, const char *, int);
|
|
char sqlite3AffinityType(const Token*);
|
|
void sqlite3Analyze(Parse*, Token*, Token*);
|
|
int sqlite3InvokeBusyHandler(BusyHandler*);
|
|
int sqlite3FindDb(sqlite3*, Token*);
|
|
int sqlite3AnalysisLoad(sqlite3*,int iDB);
|
|
void sqlite3DefaultRowEst(Index*);
|
|
void sqlite3RegisterLikeFunctions(sqlite3*, int);
|
|
int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
|
|
void sqlite3AttachFunctions(sqlite3 *);
|
|
void sqlite3MinimumFileFormat(Parse*, int, int);
|
|
void sqlite3SchemaFree(void *);
|
|
Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
|
|
int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
|
|
KeyInfo *sqlite3IndexKeyinfo(Parse *, Index *);
|
|
int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *,
|
|
void (*)(sqlite3_context*,int,sqlite3_value **),
|
|
void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*));
|
|
int sqlite3ApiExit(sqlite3 *db, int);
|
|
void sqlite3AbortOtherActiveVdbes(sqlite3 *, Vdbe *);
|
|
int sqlite3OpenTempDatabase(Parse *);
|
|
|
|
|
|
/*
|
|
** The interface to the LEMON-generated parser
|
|
*/
|
|
void *sqlite3ParserAlloc(void*(*)(size_t));
|
|
void sqlite3ParserFree(void*, void(*)(void*));
|
|
void sqlite3Parser(void*, int, Token, Parse*);
|
|
|
|
#ifndef SQLITE_OMIT_LOAD_EXTENSION
|
|
void sqlite3CloseExtensions(sqlite3*);
|
|
int sqlite3AutoLoadExtensions(sqlite3*);
|
|
#else
|
|
# define sqlite3CloseExtensions(X)
|
|
# define sqlite3AutoLoadExtensions(X) SQLITE_OK
|
|
#endif
|
|
|
|
#ifndef SQLITE_OMIT_SHARED_CACHE
|
|
void sqlite3TableLock(Parse *, int, int, u8, const char *);
|
|
#else
|
|
#define sqlite3TableLock(v,w,x,y,z)
|
|
#endif
|
|
|
|
#ifdef SQLITE_TEST
|
|
int sqlite3Utf8To8(unsigned char*);
|
|
#endif
|
|
|
|
/*
|
|
** The MallocDisallow() and MallocAllow() routines are like asserts.
|
|
** Call them around a section of code that you do not expect to do
|
|
** any memory allocation.
|
|
*/
|
|
#ifdef SQLITE_MEMDEBUG
|
|
void sqlite3MallocDisallow(void);
|
|
void sqlite3MallocAllow(void);
|
|
void sqlite3MallocBenignFailure(int);
|
|
void sqlite3MallocEnterBenignBlock(int isBenign);
|
|
void sqlite3MallocLeaveBenignBlock();
|
|
#else
|
|
# define sqlite3MallocDisallow()
|
|
# define sqlite3MallocAllow()
|
|
# define sqlite3MallocBenignFailure(x)
|
|
# define sqlite3MallocEnterBenignBlock(x);
|
|
# define sqlite3MallocLeaveBenignBlock();
|
|
#endif
|
|
|
|
|
|
#ifdef SQLITE_OMIT_VIRTUALTABLE
|
|
# define sqlite3VtabClear(X)
|
|
# define sqlite3VtabSync(X,Y) (Y)
|
|
# define sqlite3VtabRollback(X)
|
|
# define sqlite3VtabCommit(X)
|
|
#else
|
|
void sqlite3VtabClear(Table*);
|
|
int sqlite3VtabSync(sqlite3 *db, int rc);
|
|
int sqlite3VtabRollback(sqlite3 *db);
|
|
int sqlite3VtabCommit(sqlite3 *db);
|
|
#endif
|
|
void sqlite3VtabLock(sqlite3_vtab*);
|
|
void sqlite3VtabUnlock(sqlite3*, sqlite3_vtab*);
|
|
void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*);
|
|
void sqlite3VtabFinishParse(Parse*, Token*);
|
|
void sqlite3VtabArgInit(Parse*);
|
|
void sqlite3VtabArgExtend(Parse*, Token*);
|
|
int sqlite3VtabCallCreate(sqlite3*, int, const char *, char **);
|
|
int sqlite3VtabCallConnect(Parse*, Table*);
|
|
int sqlite3VtabCallDestroy(sqlite3*, int, const char *);
|
|
int sqlite3VtabBegin(sqlite3 *, sqlite3_vtab *);
|
|
FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*);
|
|
void sqlite3InvalidFunction(sqlite3_context*,int,sqlite3_value**);
|
|
int sqlite3Reprepare(Vdbe*);
|
|
void sqlite3ExprListCheckLength(Parse*, ExprList*, int, const char*);
|
|
CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
|
|
|
|
#ifdef SQLITE_ENABLE_ATOMIC_WRITE
|
|
int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int);
|
|
int sqlite3JournalSize(sqlite3_vfs *);
|
|
int sqlite3JournalCreate(sqlite3_file *);
|
|
#else
|
|
#define sqlite3JournalSize(pVfs) ((pVfs)->szOsFile)
|
|
#endif
|
|
|
|
#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
|
|
void sqlite3ExprSetHeight(Expr *);
|
|
int sqlite3SelectExprHeight(Select *);
|
|
#else
|
|
#define sqlite3ExprSetHeight(x)
|
|
#endif
|
|
|
|
u32 sqlite3Get4byte(const u8*);
|
|
void sqlite3Put4byte(u8*, u32);
|
|
|
|
#ifdef SQLITE_SSE
|
|
#include "sseInt.h"
|
|
#endif
|
|
|
|
#ifdef SQLITE_DEBUG
|
|
void sqlite3ParserTrace(FILE*, char *);
|
|
#endif
|
|
|
|
/*
|
|
** If the SQLITE_ENABLE IOTRACE exists then the global variable
|
|
** sqlite3_io_trace is a pointer to a printf-like routine used to
|
|
** print I/O tracing messages.
|
|
*/
|
|
#ifdef SQLITE_ENABLE_IOTRACE
|
|
# define IOTRACE(A) if( sqlite3_io_trace ){ sqlite3_io_trace A; }
|
|
void sqlite3VdbeIOTraceSql(Vdbe*);
|
|
#else
|
|
# define IOTRACE(A)
|
|
# define sqlite3VdbeIOTraceSql(X)
|
|
#endif
|
|
SQLITE_EXTERN void (*sqlite3_io_trace)(const char*,...);
|
|
|
|
#endif
|