d1958f289c
Commented out tests that would only pass with Longest()
2025-02-09 16:08:16 -05:00
15ee49f42e
Rename method receivers from 'regex' to 're' (it's shorter)
2025-02-09 15:51:46 -05:00
b60ded4136
Don't break when a match is found, if we are looking for the longest match
2025-02-09 15:48:33 -05:00
9fbb99f86c
Wrote example for Longest()
2025-02-09 15:47:57 -05:00
af15904f3b
Updated documentation
2025-02-09 15:41:13 -05:00
d522f50b50
Wrote new example functions
2025-02-09 15:40:59 -05:00
fb47e082eb
Wrote new methods Expand() and preferLongest(); Use new function signatures (with preferLongest); only characters should be added to next state list
2025-02-09 15:40:39 -05:00
1f5a363539
Use new function signatures (with preferLongest)
2025-02-09 15:39:09 -05:00
9e12f9dcb3
Added field to Reg, denoting if we prefer longest match (POSIX style) or not (perl style)
2025-02-09 15:38:26 -05:00
47f88c817f
Fixed typo
2025-02-09 15:14:17 -05:00
835d495990
Removed capitalization for error message (staticcheck)
2025-02-09 09:14:45 -05:00
76e0170cb9
Removed unused function
2025-02-09 09:13:52 -05:00
d172a58258
Throw error if match isn't found but test.result has >0 elements
2025-02-09 09:13:29 -05:00
7231169270
Removed unused functions
2025-02-09 09:13:03 -05:00
b7467a00f1
Removed priorityQueue (unused)
2025-02-09 09:07:43 -05:00
c6ad4caa0d
Removed a bunch of unused code (let's go!!!)
2025-02-09 09:06:40 -05:00
6334435b83
Updated tests since the engine uses Perl matching instead of POSIX matching; added tests for FindStringSubmatch
2025-02-09 09:01:42 -05:00
78fb5606dd
Use new definition of Reg
2025-02-09 08:59:16 -05:00
eddd2ae700
Updated documentation
2025-02-09 08:58:58 -05:00
c577064977
Added string field to Reg, that contains the expression string; wrote method to return the string
2025-02-09 08:58:46 -05:00
d4e3942d27
Added Match() and FindStringSubmatch(); removed old code; updated comments
2025-02-09 08:58:09 -05:00
f15a5cae34
Store all states visited in a single run of 'addStateToList()' in a slice
2025-02-08 16:07:01 -05:00
62ca1a872a
Made zeroLengthMatchState() return a pointer; reduced the number of comparisons performd by nfaState.equals
2025-02-08 16:06:14 -05:00
99230b49de
Use new function signature for zeroLengthMatchState()
2025-02-08 16:05:35 -05:00
22ead83625
Fixed assertion matching
2025-02-07 16:19:36 -05:00
3604486a9b
Used Pike's algorithm (an extension to Thompson's algorithm) (see Russ Cox's 2nd article); I think I almost have a working PCRE-style engine
2025-02-07 16:06:45 -05:00
052de55826
question() now returns 2 values
2025-02-07 16:04:46 -05:00
d2ad0d95a8
Modified question operator so that it doesn't create an unnecessary zero-state
2025-02-07 16:04:26 -05:00
ccf3b3b299
More progress on implementing PCRE matching
2025-02-06 22:08:56 -05:00
1d4f695f8f
Wrote function to check if a state is in an nfaState, based on the Equals function
2025-02-06 22:06:51 -05:00
8534174ea1
Use pointers instead of values
2025-02-06 22:06:22 -05:00
ed4ffde64e
REFACTOR NEEDED: Added another special case; insert instead of appending into currentStates
2025-02-05 22:51:55 -05:00
fbc9bea9fb
Commented out unused functions; use new nfaState parameters
2025-02-05 22:23:31 -05:00
cca8c7cda2
Got rid of transitions parameter, changed how kleene state is processed
...
I replaced the transition parameter for nfaState, replacing it with a
single nfaState pointer. This is because any non-alternation state will
only have one next state, so the map was just added complexity.
I changed alternation processing - instead of having their own dedicated
fields, they just use the new 'next' parameter, and another one called
'splitState'.
I also changed the kleene state processing to remove the unecessary
empty state in the right-side alternation (it actually messed up my
matching).
2025-02-05 22:20:28 -05:00
858e535fba
Continued implementing Thompson's algorithm
2025-02-05 18:01:36 -05:00
7c62ba6bfd
Started implementing Thompson's algorithm for matching, because the old one was completely backtracking (so it would enter infinite loops on something like '(a*)*' )
...
The git diff claims that a ton of code was changed, but most of it was just indentation changes.
2025-02-05 12:21:12 -05:00
d4e8cb74fd
Replaced pointer to nfaState with nfaState
2025-02-05 11:32:20 -05:00
3ce611d121
More work towards implementing PCRE matching
2025-02-04 14:09:24 -05:00
e0253dfaf3
Change kleene() to an alternation-style construct
2025-02-04 14:09:04 -05:00
753e973d82
Started rewrite of matching algorithm, got concatenation and alternation done, kleene and zero-state stuff is next
2025-02-03 22:01:52 -05:00
5563a70568
Reverse the order in which I pop states for alternation, because this messes with the left branch-right branch thing
2025-02-03 21:59:41 -05:00
de0d7345a8
Store left and right branches of alternation separately
2025-02-03 21:59:05 -05:00
ad273b0c68
Trying to emulate backtracking by using string pointers within threads (something similar to rsc's 2nd regexp article)
2025-02-03 16:50:11 -05:00
e167cdb2cb
Fixed mistake in test output
2025-02-03 16:49:30 -05:00
1fd48ae614
Store the current string pointer as a 'thread variable' (allows us to simulate backtracking)
2025-02-03 16:49:10 -05:00
fbc9dfcc95
Trying something out; we'll see if it works
2025-02-03 16:47:53 -05:00
bc32e0cb76
Started working on converting to PCRE matching rules (prefer left branch of alternation)
2025-02-03 14:06:14 -05:00
ad0f7d0178
Added new state fields to tell if a state is a question or alternation
2025-02-03 14:05:53 -05:00
4e597f8eb1
Implemented a priority-queue to use while matching
2025-02-03 14:05:30 -05:00
ef476e8875
Reverse the order of the numeric range before adding it, to maintain compatibility with PCRE matching rules (even though I don't implement them, if I do in the future)
2025-02-02 13:46:48 -05:00
