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27,940 Commits 1,607 Branches 185 Tags
aa2e244e146de01c51be139cc95cec92aa7fe104
Commit Graph

261 Commits

Author SHA1 Message Date
drh
9bf755cc44 Use the VList object to replace Parse.azVar for tracking the mapping between 
SQL parameter names and parameter numbers.  There is a performance
improvement, though there are still a few hiccups in the current code.

FossilOrigin-Name: 68ecafa1425a41358c88f41efea3262f1b4490f2
 2016-12-23 03:59:31 +00:00
drh
585a59795c Updates to the tokenizer for EBCDIC. No changes for standard builds. 
FossilOrigin-Name: 4fc6580ffa7232aaf751f38f90c45edc8863abe5
 2016-12-12 01:53:36 +00:00
drh
167fbbe195 Rearrange the code inside sqlite3RunParser() routine so that sqlite3Parser() 
is only called from a single place.  This allows sqlite3Parser() to be
in-lined, which results in a 0.25% overall performance gain.

FossilOrigin-Name: 25d1d02b3ea126ade22b2a72649ae55509aa1777
 2016-08-10 14:40:00 +00:00
drh
f3c57ff54c Avoid unnecessary calls to object destructors for a small performance gain. 
FossilOrigin-Name: aec94b6ee68fe50e2cc14388281e2ef531e21d68
 2016-04-12 00:16:54 +00:00
dan
a73086dd9e Fix a problem with handling identifiers that start with "x" if SQLITE_OMIT_BLOB_LITERAL is defined. 
FossilOrigin-Name: b65217c69c59cbe9cd1494e2eb42ecf22c336399
 2016-02-24 16:14:07 +00:00
drh
b2bddbbc2d Avoid a potential buffer overrun if an SQL statement being parsed ends 
with an illegal "!" token.  (This problem was detected by fuzzcheck
running under valgrind. The problem was introduced by check-in [9570b6b43df3].)

FossilOrigin-Name: 2a8d97e7c8976df0312e1294e8c1da8b15686654
 2016-02-18 14:49:28 +00:00
drh
30c14728b4 Minor simplification to the tokenizer. Slightly smaller and faster. 
FossilOrigin-Name: 9570b6b43df3bc5ce314cded20bca8be9e968efe
 2016-02-16 13:04:19 +00:00
mistachkin
fad3039c51 Enhance ability to debug out-of-memory errors. 
FossilOrigin-Name: 6a9c4a3ebfb7cc0738ef6634440ccab44a21ff28
 2016-02-13 23:43:46 +00:00
drh
e96f361995 Changes to help the tokenizer run about 33% faster. 
FossilOrigin-Name: a050e6f096d40aa5b6275797b96e62c228044f5a
 2016-02-08 19:36:46 +00:00
drh
34dcee6544 Add code to get the tokenizer character-class logic working for EBCDIC. 
FossilOrigin-Name: 04f7da77c13925c1f1e287f4579bb85518297d81
 2016-02-08 19:15:48 +00:00
drh
8974331fc3 Demonstrate a much faster sqlite3GetToken() routine by using a lookup table 
to map initial token characters into a character class.  This check-in does
not work for EBCDIC.  More optimization needed.

FossilOrigin-Name: 9115baa1919584dc8ca25bbff54d3b65748a9631
 2016-02-08 02:30:50 +00:00
drh
4a642b6060 Improvements to the way that OOM errors are processed. 
FossilOrigin-Name: c3ef03478a5788c855b3aef385d43ae7f494f440
 2016-02-05 01:55:27 +00:00
drh
54bb56d82a Performance enhancement to the tokenizer. 
FossilOrigin-Name: 6ea2df86c95c226052f528424e9bee367a2e765a
 2015-11-10 03:30:51 +00:00
drh
0739e45bcd Small size reduction and performance increase in the parser. 
FossilOrigin-Name: d62cd757a69cc49c2d309e27c948610b5868632f
 2015-11-09 02:08:09 +00:00
drh
6e7722669e Proposed fix for an infinite loop bug in the WITH clause semantic analysis 
logic.

FossilOrigin-Name: 028475cb17a4b50baf0e9aba9bd3403d0a5d03b0
 2015-11-07 17:48:21 +00:00
drh
b02392e6f0 Change sqlite3StatusSet() into sqlite3StatusHighwater() so that only the 
highwater mark is recorded.  This gives a small size reduction and
performance improvement.

FossilOrigin-Name: 6422d223dd10018703c6b083d29a3c35c837fc97
 2015-10-15 15:28:56 +00:00
drh
a248a722cf Change the parser engine so that it (once again) waits for a lookahead token 
before reducing, even in a SHIFTREDUCE action.

FossilOrigin-Name: 2c17a1358353a0845b039283be79353f033e2491
 2015-09-07 19:52:55 +00:00
drh
3bd48ab213 For the Lemon-generated parser, add a new action type SHIFTREDUCE and use it 
to further compress the parser tables and improve parser performance.

FossilOrigin-Name: 531c3974b3d586c1989cde905b2fb4681239a570
 2015-09-07 18:23:37 +00:00
drh
f5ed7ad63e Fix harmless compiler warnings. 
FossilOrigin-Name: b0badb99023e23bef0e2064cec58f2b279af0c0b
 2015-06-15 14:43:25 +00:00
drh
e726622579 Move two unreachable conditionals inside of NEVER() or assert(). 
FossilOrigin-Name: db4e9728fae5f7b0fad6aa0a5be317a7c9e7c417
 2015-05-29 17:51:16 +00:00
dan
584390e8dd Fix a one-byte buffer overread that may follow a syntax error while preparing an SQL statement. 
FossilOrigin-Name: 075003930da98419f671b7833a5850693529fb62
 2015-05-26 18:58:57 +00:00
drh
22c17b8bf5 Simplifications to error message processing. Fix a possible problem in error 
message formatting when vacuuming a database with a corrupt schema.

FossilOrigin-Name: 56ef98a04765c34c1c2f3ed7a6f03a732f3b886e
 2015-05-15 04:13:15 +00:00
drh
9a9705de5c Do not send the extra ";" and "\000" tokens to the parser if a prior error 
has occurred.

FossilOrigin-Name: 9aa70ddf2ca6044634560a801b43df121384eb64
 2015-04-25 00:32:30 +00:00
drh
f3151f0a0d Fix a couple of unreachable branches. 
FossilOrigin-Name: 8f391dffcfe068d48f854784648610d8a86f6bc8
 2015-04-16 20:27:09 +00:00
drh
0be0cf6721 Remove a branch that became unreachable due to one of the earlier check-ins 
today.

FossilOrigin-Name: fa0956edf866f48f448967836709a3ad822ff917
 2015-04-15 08:37:42 +00:00
drh
347bdc39a7 Fix the error message generator for illegal token errors so that it does not 
leak memory if it immediately follows another erroneous SQL statement.

FossilOrigin-Name: 3576973f8b88b6109fbefdebfa53468ffa137009
 2015-04-15 07:57:27 +00:00
drh
af89fe66ea Add the sqlite3_status64() interface. Make the new interface and the legacy 
sqlite3_status() both atomic and threadsafe.  Check threadsafety using
assert()s.

FossilOrigin-Name: 1ce8e8fa4b866aafa12b1da0eb4d02321af9293e
 2015-03-23 17:25:18 +00:00
drh
96c707a3c2 Improvements to SQLITE_ENABLE_API_ARMOR. 
FossilOrigin-Name: 823ad40ccb5b51aaa0d5a48da63b465df9d0649a
 2015-02-13 16:36:14 +00:00
mistachkin
cd54bab6fe Minor fixes and enhancements to the SQLITE_ENABLE_API_ARMOR functionality. 
FossilOrigin-Name: cb3e4219ac9560d2773b85453aafda54b7c9346f
 2014-12-20 21:14:14 +00:00
drh
97348b37c2 Change that might allow SQLite to build and work using the EBCDIC character 
set.

FossilOrigin-Name: ef30e0352b3d4a29749cd0872c10e45a6649ec52
 2014-09-25 02:44:29 +00:00
drh
fb046e7653 Fix a problem with parser memory allocation on 32-bit systems. 
FossilOrigin-Name: 2f69a1fa6adc9377149ae7faa586a5d30b6a631b
 2014-09-12 04:28:33 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
28e048c618 Add support for parsing C-style hexadecimal literals. 
FossilOrigin-Name: 34a1f38b7a23c64f5c6e5b34c19a20480be53961
 2014-07-23 01:26:51 +00:00
dan
b290f11775 Fix some problems to do with WITH clauses and name resolution. 
FossilOrigin-Name: 6a549187ed8b5ed50daefa676ff666ae2ed43346
 2014-01-17 14:59:27 +00:00
dan
4e9119d9e8 Add code to handle non-recursive CTEs in the same way as SQL views. 
FossilOrigin-Name: a26f399ba485e8127c276c5f103ec6c555e11734
 2014-01-13 15:12:23 +00:00
drh
f59b12fbc1 Optimizations to the SQL language grammar that result in a small size 
reduction and speed increase.

FossilOrigin-Name: cb5d1f83e0a33d546d4c0cb817ef1f8440d1f738
 2014-01-11 03:54:05 +00:00
drh
c6bd4e4a36 Store the root page of the PRIMARY KEY index for a WITHOUT ROWID table in 
the sqlite_master entry for the main table and omit the sqlite_master entry
for the PRIMARY KEY.

FossilOrigin-Name: b7544bb280f1c1c55135a9b35aeb85604fef94a3
 2013-11-02 14:37:18 +00:00
drh
3975974780 Updates to requirements marks. No code changes. 
FossilOrigin-Name: 213020769f310aec1591d97756b53891d0b64005
 2013-08-02 23:40:45 +00:00
drh
4f7d3a5f06 Refactor names of fields in the sqlite3 object: "activeVdbeCnt" becomes 
"nVdbeActive".  Related fields becomes "nVdbeRead", "nVdbeWrite", and
"nVdbeExec".

FossilOrigin-Name: 14f796963474350e7aee8d3757acd3315fe78e4f
 2013-06-27 23:54:02 +00:00
drh
2faf5f5e9e Update the text of requirements associated with sqlite3_pcache_methods2. 
Update requirements marks embedded in code.  All of the above are comment
changes only; there are no changes to code in this check-in.

FossilOrigin-Name: f945c41a72519d6bcfb478730ba0254bb24e5331
 2011-12-30 15:17:47 +00:00
drh
3a61a5a2b5 Performance enhancement to the blob-literal tokenizer. 
FossilOrigin-Name: 61aa2031f1c5ae05e31077588a55194a9546262a
 2011-06-03 21:34:45 +00:00
drh
124c0b49a1 Refactor the SQL parameter processing so that parameter names for values 
that are optimized out of the prepare statement are not forgotten.

FossilOrigin-Name: b3aaf715b60b8a338cc6c92dad1ead4a3f7146a3
 2011-06-01 18:15:55 +00:00
drh
b975598ea0 Make sure all memory from sqlite3DbMalloc() is freed by sqlite3DbFree() and 
all memory from sqlite3_malloc() is freed by sqlite3_free().

FossilOrigin-Name: ac1f37a647e9ed1c00a901d26d9956a86c40117a
 2010-07-24 16:34:37 +00:00
dan
1feeaed291 Remove the Table.dbMem variable, as it is no longer being used for its original purpose. 
FossilOrigin-Name: 6eddc6e601cf8f585c6c2cf79f36fcbfe98a307e
 2010-07-23 15:41:47 +00:00
drh
413c3d36a2 Continuing improvements to error reporting and the sqlite3_log() routine. 
FossilOrigin-Name: edea3bb740ddd096a46e00678b59d465bb1e2903
 2010-02-23 20:11:56 +00:00
drh
d3479b94e3 Add a few simple evidence comments to the tokenizer. No functional changes. 
FossilOrigin-Name: 0daec3099d439ce8a8779260b12975f262037bc8
 2009-12-14 17:42:12 +00:00
drh
af2b572028 Use the sqlite3CtypeMap[] to improve the speed and reduce the size of the 
logic in the tokenizer that recognizes identifiers.

FossilOrigin-Name: 1c9243b0760741f48b15efb0da661255177aed8b
 2009-11-16 15:11:51 +00:00
drh
c81c11f62c Remove the obsolete "$Id:$" RCS identifier strings from the source code. 
FossilOrigin-Name: f6c045f649036958078cb15cd9d5453680c82b0c
 2009-11-10 01:30:52 +00:00
drh
e7f3f3eec1 Remove two unused fields from the Parse structure. The TCL interface now 
removes leading whitespace from SQL statements before parsing them. (CVS 6846)

FossilOrigin-Name: 983cb6924b8a7d3057718b9228c0cb2fbe7f0dc4
 2009-07-03 22:54:36 +00:00
drh
0b9f50d8aa Enhance autoincrement so that it works with triggers that also do 
autoincrement inserts, even multiple inserts into the same table.
Ticket #3928 (CVS 6807)

FossilOrigin-Name: 1330993de8eae7baeec24100216158063c9bdc19
 2009-06-23 20:28:53 +00:00