4 ** The author disclaims copyright to this source code. In place of
5 ** a legal notice, here is a blessing:
7 ** May you do good and not evil.
8 ** May you find forgiveness for yourself and forgive others.
9 ** May you share freely, never taking more than you give.
11 *************************************************************************
13 ** This file contains definitions of global variables and contants.
15 #include "sqliteInt.h"
17 /* An array to map all upper-case characters into their corresponding
18 ** lower-case character.
20 ** SQLite only considers US-ASCII (or EBCDIC) characters. We do not
21 ** handle case conversions for the UTF character set since the tables
22 ** involved are nearly as big or bigger than SQLite itself.
24 const unsigned char sqlite3UpperToLower[] = {
26 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
27 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
28 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
29 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 97, 98, 99,100,101,102,103,
30 104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,
31 122, 91, 92, 93, 94, 95, 96, 97, 98, 99,100,101,102,103,104,105,106,107,
32 108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,
33 126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
34 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,
35 162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,
36 180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,
37 198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,
38 216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,
39 234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,
43 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 0x */
44 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, /* 1x */
45 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, /* 2x */
46 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 3x */
47 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, /* 4x */
48 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, /* 5x */
49 96, 97, 66, 67, 68, 69, 70, 71, 72, 73,106,107,108,109,110,111, /* 6x */
50 112, 81, 82, 83, 84, 85, 86, 87, 88, 89,122,123,124,125,126,127, /* 7x */
51 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, /* 8x */
52 144,145,146,147,148,149,150,151,152,153,154,155,156,157,156,159, /* 9x */
53 160,161,162,163,164,165,166,167,168,169,170,171,140,141,142,175, /* Ax */
54 176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191, /* Bx */
55 192,129,130,131,132,133,134,135,136,137,202,203,204,205,206,207, /* Cx */
56 208,145,146,147,148,149,150,151,152,153,218,219,220,221,222,223, /* Dx */
57 224,225,162,163,164,165,166,167,168,169,232,203,204,205,206,207, /* Ex */
58 239,240,241,242,243,244,245,246,247,248,249,219,220,221,222,255, /* Fx */
63 ** The following 256 byte lookup table is used to support SQLites built-in
64 ** equivalents to the following standard library functions:
72 ** SQLite identifier character 0x40
74 ** Bit 0x20 is set if the mapped character requires translation to upper
75 ** case. i.e. if the character is a lower-case ASCII character.
76 ** If x is a lower-case ASCII character, then its upper-case equivalent
77 ** is (x - 0x20). Therefore toupper() can be implemented as:
79 ** (x & ~(map[x]&0x20))
81 ** Standard function tolower() is implemented using the sqlite3UpperToLower[]
82 ** array. tolower() is used more often than toupper() by SQLite.
84 ** Bit 0x40 is set if the character non-alphanumeric and can be used in an
85 ** SQLite identifier. Identifiers are alphanumerics, "_", "$", and any
86 ** non-ASCII UTF character. Hence the test for whether or not a character is
87 ** part of an identifier is 0x46.
89 ** SQLite's versions are identical to the standard versions assuming a
90 ** locale of "C". They are implemented as macros in sqliteInt.h.
93 const unsigned char sqlite3CtypeMap[256] = {
94 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00..07 ........ */
95 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, /* 08..0f ........ */
96 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10..17 ........ */
97 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 18..1f ........ */
98 0x01, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, /* 20..27 !"#$%&' */
99 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 28..2f ()*+,-./ */
100 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, /* 30..37 01234567 */
101 0x0c, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 38..3f 89:;<=>? */
103 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x02, /* 40..47 @ABCDEFG */
104 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 48..4f HIJKLMNO */
105 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 50..57 PQRSTUVW */
106 0x02, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x40, /* 58..5f XYZ[\]^_ */
107 0x00, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x22, /* 60..67 `abcdefg */
108 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 68..6f hijklmno */
109 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 70..77 pqrstuvw */
110 0x22, 0x22, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, /* 78..7f xyz{|}~. */
112 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 80..87 ........ */
113 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 88..8f ........ */
114 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 90..97 ........ */
115 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 98..9f ........ */
116 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* a0..a7 ........ */
117 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* a8..af ........ */
118 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* b0..b7 ........ */
119 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* b8..bf ........ */
121 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* c0..c7 ........ */
122 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* c8..cf ........ */
123 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* d0..d7 ........ */
124 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* d8..df ........ */
125 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* e0..e7 ........ */
126 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* e8..ef ........ */
127 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* f0..f7 ........ */
128 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 /* f8..ff ........ */
135 ** The following singleton contains the global configuration for
136 ** the SQLite library.
138 SQLITE_WSD struct Sqlite3Config sqlite3Config = {
139 SQLITE_DEFAULT_MEMSTATUS, /* bMemstat */
141 SQLITE_THREADSAFE==1, /* bFullMutex */
142 0x7ffffffe, /* mxStrlen */
143 100, /* szLookaside */
144 500, /* nLookaside */
145 {0,0,0,0,0,0,0,0}, /* m */
146 {0,0,0,0,0,0,0,0,0}, /* mutex */
147 {0,0,0,0,0,0,0,0,0,0,0}, /* pcache */
148 (void*)0, /* pHeap */
150 0, 0, /* mnHeap, mxHeap */
151 (void*)0, /* pScratch */
154 (void*)0, /* pPage */
157 0, /* mxParserStack */
158 0, /* sharedCacheEnabled */
159 /* All the rest should always be initialized to zero */
163 0, /* isMallocInit */
164 0, /* isPCacheInit */
166 0, /* nRefInitMutex */
173 ** Hash table for global functions - functions common to all
174 ** database connections. After initialization, this table is
177 SQLITE_WSD FuncDefHash sqlite3GlobalFunctions;
180 ** Constant tokens for values 0 and 1.
182 const Token sqlite3IntTokens[] = {
189 ** The value of the "pending" byte must be 0x40000000 (1 byte past the
190 ** 1-gibabyte boundary) in a compatible database. SQLite never uses
191 ** the database page that contains the pending byte. It never attempts
192 ** to read or write that page. The pending byte page is set assign
193 ** for use by the VFS layers as space for managing file locks.
195 ** During testing, it is often desirable to move the pending byte to
196 ** a different position in the file. This allows code that has to
197 ** deal with the pending byte to run on files that are much smaller
198 ** than 1 GiB. The sqlite3_test_control() interface can be used to
199 ** move the pending byte.
201 ** IMPORTANT: Changing the pending byte to any value other than
202 ** 0x40000000 results in an incompatible database file format!
203 ** Changing the pending byte during operating results in undefined
204 ** and dileterious behavior.
206 #ifndef SQLITE_OMIT_WSD
207 int sqlite3PendingByte = 0x40000000;
212 ** Properties of opcodes. The OPFLG_INITIALIZER macro is
213 ** created by mkopcodeh.awk during compilation. Data is obtained
214 ** from the comments following the "case OP_xxxx:" statements in
217 const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER;