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Commit Graph

261 Commits

Author SHA1 Message Date
dan
406eb5a146 Add extra checks for the validity of a numeric literal to sqlite3DequoteNumber(). 
FossilOrigin-Name: d57407ef59baf699b72c8c4859abfaa7977dd41f6f16eb8fe1d53a68806eb966
 2024-01-23 11:20:58 +00:00
dan
8374f7dfaf Allow underscores to occur in hex literals. 
FossilOrigin-Name: 81a56229460cc5b6acfd3c3729fcf89ea3cccb546ca2b4f4035b140c60911e18
 2024-01-22 19:38:55 +00:00
dan
fbb72fae8f Add extra tests for the code on this branch. 
FossilOrigin-Name: b15bbb201a7727806b9fd6c02f2579b01e0e38155a8f9e24c5d6f487fe3e8b6c
 2024-01-22 19:00:50 +00:00
drh
87ad06ed99 Do not allow digit separators that are not surrounded on both sides by digits. 
FossilOrigin-Name: 5bbc378a3022e2013048c8e296d95de21d15a8d7c1b62e8ffb64782f952cfe12
 2024-01-22 17:18:41 +00:00
dan
95295a7e9b Add test cases for the new code on this branch. 
FossilOrigin-Name: 49f29a7b4f44f691ecf7a57b26477971e6ffaf2a0b1690b4926ffbb43fa3929b
 2024-01-20 16:46:25 +00:00
dan
3eae6664a0 Allow "_" characters to appear following any digit in an integer or real SQL literal. 
FossilOrigin-Name: 401650aaccbc99246bd4e1ff37a28b78f528178aee2f294d87b9f7fecd7432bb
 2024-01-20 16:18:04 +00:00
drh
89e1caf294 New testcase() macro in the tokenizer, to better document its behavior. 
FossilOrigin-Name: b2fdac0b151864eb2aa79f0b0ee60f9c6d9f3eb8c7626605eac17a02a8cf59bc
 2023-08-10 18:50:00 +00:00
drh
1e24dc987a Small performance improvement and size reduction by recognizing that no 
SQL keywords have less than 2 characters.

FossilOrigin-Name: 6b3d25b7982623ab4b25161aff9ab44778e136069043ab425543597c42c98ae5
 2023-06-19 20:54:49 +00:00
drh
41ce47c4f4 Add the new internal interface sqlite3DbNNFreeNN(db,ptr) where both the 
db and ptr parameters are guaranteed to be non-NULL.  Use this where
appropriate to save more than 2 million CPU cycles on the standard
performance test.

FossilOrigin-Name: e5eaa80e81fdf86f2875a912b880272b8d099b82b08e945a7988c5dd0fe9d6b5
 2022-08-22 02:00:26 +00:00
drh
cd9e863079 Ensure that the Parse.nErr flag is set following an SQLITE_TOOBIG error on 
a nested parse.  Fix for the problem identified by
[forum/forumpost/d5a82ba9eedee30c | forum post d5a82ba9eedee30c].
Also, remove unnecessary clearing of the Parse.zErrMsg field
following a nested parse.

FossilOrigin-Name: 44d77a7f807f5dc3e94e6cd88a27bea79257f0f2ccf332891bdaa4668d0bb987
 2022-07-11 14:36:03 +00:00
drh
da3ec15f3c Use sqlite3DbFreeNN() instead of sqlite3DbFree() in a few hot spots for 
better performance.

FossilOrigin-Name: b12de0ecc78a4f654c8e7b2b17cc2201688808a4f516908e9563a216677e655c
 2022-03-28 14:18:03 +00:00
drh
4e532958c1 Provide sqlite3_error_offset() data for some new errors. 
FossilOrigin-Name: 1269206db810460e55a52e178ba3332add42a11f66c5f292f8f0d29ccd61a4b8
 2022-02-08 13:41:23 +00:00
drh
d5326c333f Add new binary operators "->" and "->>" to the parser that evaluate to 
2-argument SQL functions by the same name.  Add new "->" and "->>" functions
to the JSON extension that are aliases for json_extract().

FossilOrigin-Name: c4e4e3a3fc5da0381ccb7930706e57d7831d87f9c63bafe49ae64117701e1cfe
 2022-01-07 14:58:47 +00:00
drh
54bc63815a Simplify the sqlite3RunParser() routine by omitting the third parameter. 
Results in a binary that is about 100 bytes smaller and 1.4M cycles faster.

FossilOrigin-Name: 6fb2a1bb0280d6e31291e3fd06bbcbbb28ef5fb27d3898e2327a50ac738ae1f3
 2021-12-31 19:20:42 +00:00
drh
16118265ca Performance optimization and size reduction in sqlite3RunParser(). 
FossilOrigin-Name: 41ee2bac5731d8434322e92abba580f7c759a137e576dd286fe01ab23fc440ea
 2021-12-31 17:54:48 +00:00
dan
488b55856e Fix a problem causing an OOM within an ALTER TABLE ADD COLUMN command that adds a column with a CHECK constraint to go unreported. 
FossilOrigin-Name: a33f5e93ecb7d84291f6fecc7b60f0c555034aa47e24584c63c78d8a94710d82
 2021-11-16 13:36:50 +00:00
drh
ba9ebc2d12 Treat byte-order marks (BOMs) at the start of a token as whitespace. 
This enhancement is inspired by
[forum:/forumpost/ed8f696a20|forum post ed8f696a20].

FossilOrigin-Name: 3d55c21c167631f42d155aadec544e629bd078de9992aa5a74694d08bc52052b
 2021-04-24 12:24:08 +00:00
larrybr
4cf34a5e73 Fix tokenizer's classification of EBCDIC newline. 
FossilOrigin-Name: 8680f6a8fb34b9c0ea9b4286888b4df5df427d2df10c782d198bc3f2fdcd0704
 2021-03-19 15:02:59 +00:00
drh
cf3c078f93 Add a linked list of ParseCleanup objects to the end of a Parse object and 
use that list as a place to put other sub-objects that need to be deallocated.
Have a single such list for infrequently used sub-objects is more efficient
than doing an a separate check for each kind of sub-object.

FossilOrigin-Name: affa2b7b316941b8a6c4d0d1ff212c81a593faf1d05d129e14d2b70d73a25c59
 2021-01-11 20:37:02 +00:00
drh
d1032f952c Improve the speed of the tokenizer by recognizing that tokens starting 
with letters "_", "Y", or "Z" can never be SQL keywords and must be ordinary
identifiers.

FossilOrigin-Name: 16e281ed6219cc229dec7e3f1b40da2304dc270a74fd6ef78d04a088e30e7026
 2020-11-27 20:56:16 +00:00
drh
08b9208660 Fix harmless compiler warnings that surface in newer versions of GCC. 
FossilOrigin-Name: 9d670a318381f219b467653f5f9539097808b887ae37291ce13be462dedfb18d
 2020-08-10 14:18:00 +00:00
dan
892edb69c4 Use __atomic_load_n() and __atomic_store_n() for a few more things where they are available. 
FossilOrigin-Name: a49f8ec552bede7da731e0571ccf49de1a30e7be3a5673150436c8b411ba6ffc
 2020-03-30 13:35:05 +00:00
mistachkin
16fd04cdbe Enhancements to SQL query normalization for UPDATE statements. 
FossilOrigin-Name: bba975c7af3de9aeb5c62fb8b05d61b96e4ecd0b030008442bbdd345e1e5f134
 2019-10-16 17:46:22 +00:00
drh
2b454e0335 Fix a harmless compiler warning that only comes up during debug builds. 
FossilOrigin-Name: 848869ced988ca4d0ac76d43f984360fd11997a580719cccf8d55becea4e8fb1
 2019-02-26 16:11:46 +00:00
drh
1cf197583d Give the sqlite3 object a pointer to the current Parse so that if an OOM 
occurs, it can automatically set the Parse.rc value to SQLITE_NOMEM.  This
avoids a frequent extra test of db.mallocFailed in the innermost parser loop.

FossilOrigin-Name: 5c6638040b3017c6be016441422d965a3ca00dd6ae1f78cadc0b54562978f64e
 2019-02-08 14:55:30 +00:00
mistachkin
844b900491 Fix harmless compiler warning. 
FossilOrigin-Name: dddda685f3443d8a38901f758543fcde73d7b8cfe72b0ad5f419cd7459343bf5
 2019-02-02 01:27:45 +00:00
drh
9b747068ba Improvements to "PRAGMA parser_trace=ON": Make it a flag pragma, and then 
use the flag to show the complete SQL text at the beginning of the parse.

FossilOrigin-Name: 507c43537f00d089efb3c3020fb6e826e8f89f3efa2caaa12c5309d35dd0c22e
 2019-01-31 01:39:01 +00:00
drh
1a6c2b1d38 Further refinements to the sqlite3_normalized_sql() interface. TH3 now 
gives 100% MC/DC on that interface.

FossilOrigin-Name: c96bf6cca220e363b099455ce35195ce7e89d374a52dc787f56e7b11e587bced
 2018-12-10 20:01:40 +00:00
drh
9042ff214b Fix issues with the new normalizer. 
FossilOrigin-Name: 057d7d40c56b7416a59a79cb627b2b3e5837eca2d6dbcb50127baaadf1941f51
 2018-12-10 16:49:33 +00:00
drh
643d855da9 Refactor the sqlite3_normalized_sql() implementation. This is a 
work-in-progress. There are still issues.

FossilOrigin-Name: a4c890b0af9786295e6df05022009d8946550adb873535c610be805c2b7a4083
 2018-12-10 16:00:57 +00:00
mistachkin
8bee11a41e Add the sqlite3_normalized_sql() API. 
FossilOrigin-Name: 592b66e8058dd03a056a036e2606247c9efdb06d15eebe9bcc455f7f55e30ae6
 2018-10-29 17:53:23 +00:00
dan
c9461ecc28 Extend RENAME TABLE to edit triggers and views. Still buggy. 
FossilOrigin-Name: 01308bae3acf33f78b5bb90892085eab340df093aafc17e6ccf6a7d6cf324897
 2018-08-29 21:00:16 +00:00
drh
38d9964a73 Additional fixes for harmless compiler warnings that are specific to this 
branch.

FossilOrigin-Name: 9d8e73bf71e996b810959ffc0e60de69b5e8ca3301df52f9c35d5e9075921798
 2018-08-18 18:27:18 +00:00
dan
5496d6a25a Edit the WHEN and UPDATE OF clauses of trigger programs as part of ALTER TABLE 
RENAME COLUMN.

FossilOrigin-Name: 5fdb6b0aafba727139e1937ef5950e4434a77f95a10fc46f8010ca2de3922326
 2018-08-13 17:14:26 +00:00
dan
cf8f289542 Experimental implementation of ALTER TABLE ... RENAME COLUMN. Still buggy. 
FossilOrigin-Name: fa0fc01eb48a864f0a3d43f9b805d5ed2e530846ee0c34fcbc2eabd9e5696277
 2018-08-09 20:47:01 +00:00
drh
c7bf57168a Fixes for various harmless compiler warnings. 
FossilOrigin-Name: 5023b1b85b883a716a5da673740b6effe214ee0490f4ca45f161bb8b04784366
 2018-07-09 22:49:01 +00:00
dan
2b5f152601 Fix a minor problem in the code for determining whether or not an SQL 
statement is SQLITE_TOOBIG.

FossilOrigin-Name: 763e6c9e2bbc0a6ef8d8361069bf7160790c9064f24f0e336b7ed85668735da9
 2018-06-30 20:00:35 +00:00
dan
6e2210e0a1 Have the tokenizer handle fallback for tokens "OVER" and "FILTER" in the same 
way as it does for "WINDOW".

FossilOrigin-Name: 12d819e1c17d8036900352b0989c4bfcbc34193c3735bb9af7ab051f0f129d3d
 2018-06-30 18:54:56 +00:00
dan
34a7d790ba Further performance related tweaks for sqlite3RunParser(). 
FossilOrigin-Name: 5eb4776598f5bba7ef21a2c58c03105544da73d642d7ffc146f84eff1993d71e
 2018-06-29 20:43:33 +00:00
dan
d437ac0c58 Further tweaks to sqlite3RunParser(). 
FossilOrigin-Name: eef61ffab7fa36b126f57bf7028dd35c67ed4617c47145be059f91e58023b0a4
 2018-06-29 20:21:24 +00:00
dan
769309fcf3 Improve on the previous checkin. Still a bit slow. 
FossilOrigin-Name: c1fb41aa7b7207b81ee1d5d32da3380b36d694033b87a2873981e0c6437ba956
 2018-06-29 19:54:51 +00:00
dan
59ff42516c Instead of using a lemon %fallback directive, have the tokenizer try to figure 
out whether an instance of "WINDOW" should be TK_WINDOW or TK_ID.

FossilOrigin-Name: 022079cb0d67be5ac0a50dd9a4d41ee55ce8df681ecd0a544170d75fc8649978
 2018-06-29 17:44:52 +00:00
drh
875ad8ceb1 Improved context for error_log message coming from sqlite3_prepare(). 
FossilOrigin-Name: fea7ade649ae72303078782f7bc510e0a17f082ffde10e769f1aeb1cf37b5554
 2018-06-21 23:53:54 +00:00
drh
fb32c44e41 Add the %extra_context directive to lemon, as an alternative to %extra_argument. 
Use this to improve the performance of the parser.

FossilOrigin-Name: be47a6f5262a43f477700579512fe7112a0872faedcbbe5c3383d13a08af6440
 2018-04-21 13:51:42 +00:00
drh
6116ee4eee Compute the correct column name even if the column identifier is the 
very last token in the SQL statement.  This fixes a problem introduced
by check-in [0fdf97efe5df745510c6b] and reported by the community during
beta-testing.

FossilOrigin-Name: 36b89d728ff13d395fe0e1db8e7c01263f73dccb278b3ece27f6ef78e909b492
 2018-01-10 00:40:06 +00:00
drh
dbd6a7dc06 Split off sqlite3DbFreeNN() from sqlite3DbFree() and use it in cases where 
we know that the argument to be freed is never NULL.

FossilOrigin-Name: ad90e8bb5e47945607c8fb47b6ade8cfc52a9b684805cc40132629be0ecc14cc
 2017-04-05 12:39:49 +00:00
drh
53b2459a36 Declare the Lemon-generated parser object as itself. (Duh) 
FossilOrigin-Name: c8000e94cca59dabf83d6cb75b40441aaf793d29880582dc4baa17246449b5fe
 2017-03-30 17:13:37 +00:00
drh
ecc0f84d08 Ensure that the stack space used to hold the Lemon-generated parser object 
is always 8-byte aligned.

FossilOrigin-Name: 1279de0b70cabf39899d92ece8852a780fd800bf3154971537b3427e5bd3ca50
 2017-03-30 16:37:05 +00:00
drh
9b38d6660f Performance optimization in the tokenizer/parser loop. 
FossilOrigin-Name: 2cb71583d631cd417acbeebbb4ee950573a9deef
 2017-03-07 14:38:52 +00:00
drh
d26cc54183 In the amalgamation, allocate the parser engine object from stack rather than 
from heap, for improved performance.  This only happens in the amalgamation,
since otherwise the sqlite3RunParser() routine does not know the object size.

FossilOrigin-Name: 4fe879d4b5da6ae0688a7a99004683a234966597
 2017-01-28 20:46:37 +00:00