Aadhavan Srinivasan
d4e3942d27
Added Match() and FindStringSubmatch(); removed old code; updated comments
4 weeks ago
Aadhavan Srinivasan
f15a5cae34
Store all states visited in a single run of 'addStateToList()' in a slice
1 month ago
Aadhavan Srinivasan
62ca1a872a
Made zeroLengthMatchState() return a pointer; reduced the number of comparisons performd by nfaState.equals
1 month ago
Aadhavan Srinivasan
99230b49de
Use new function signature for zeroLengthMatchState()
1 month ago
Aadhavan Srinivasan
22ead83625
Fixed assertion matching
1 month ago
Aadhavan Srinivasan
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
1 month ago
Aadhavan Srinivasan
052de55826
question() now returns 2 values
1 month ago
Aadhavan Srinivasan
d2ad0d95a8
Modified question operator so that it doesn't create an unnecessary zero-state
1 month ago
Aadhavan Srinivasan
ccf3b3b299
More progress on implementing PCRE matching
1 month ago
Aadhavan Srinivasan
1d4f695f8f
Wrote function to check if a state is in an nfaState, based on the Equals function
1 month ago
Aadhavan Srinivasan
8534174ea1
Use pointers instead of values
1 month ago
Aadhavan Srinivasan
ed4ffde64e
REFACTOR NEEDED: Added another special case; insert instead of appending into currentStates
1 month ago
Aadhavan Srinivasan
fbc9bea9fb
Commented out unused functions; use new nfaState parameters
1 month ago
Aadhavan Srinivasan
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).
1 month ago
Aadhavan Srinivasan
858e535fba
Continued implementing Thompson's algorithm
1 month ago
Aadhavan Srinivasan
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.
1 month ago
Aadhavan Srinivasan
d4e8cb74fd
Replaced pointer to nfaState with nfaState
1 month ago
Aadhavan Srinivasan
3ce611d121
More work towards implementing PCRE matching
1 month ago
Aadhavan Srinivasan
e0253dfaf3
Change kleene() to an alternation-style construct
1 month ago
Aadhavan Srinivasan
753e973d82
Started rewrite of matching algorithm, got concatenation and alternation done, kleene and zero-state stuff is next
1 month ago
Aadhavan Srinivasan
5563a70568
Reverse the order in which I pop states for alternation, because this messes with the left branch-right branch thing
1 month ago
Aadhavan Srinivasan
de0d7345a8
Store left and right branches of alternation separately
1 month ago
Aadhavan Srinivasan
ad273b0c68
Trying to emulate backtracking by using string pointers within threads (something similar to rsc's 2nd regexp article)
1 month ago
Aadhavan Srinivasan
e167cdb2cb
Fixed mistake in test output
1 month ago
Aadhavan Srinivasan
1fd48ae614
Store the current string pointer as a 'thread variable' (allows us to simulate backtracking)
1 month ago
Aadhavan Srinivasan
fbc9dfcc95
Trying something out; we'll see if it works
1 month ago
Aadhavan Srinivasan
bc32e0cb76
Started working on converting to PCRE matching rules (prefer left branch of alternation)
1 month ago
Aadhavan Srinivasan
ad0f7d0178
Added new state fields to tell if a state is a question or alternation
1 month ago
Aadhavan Srinivasan
4e597f8eb1
Implemented a priority-queue to use while matching
1 month ago
Aadhavan Srinivasan
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)
1 month ago
Aadhavan Srinivasan
7e6b02632f
Added more tests; commented out tests that I am failing
1 month ago
Aadhavan Srinivasan
f94e3f2e71
Added comments
1 month ago
Aadhavan Srinivasan
b129d83c3f
Added function to reset threads
1 month ago
Aadhavan Srinivasan
43aa7b5876
Updated documentation
1 month ago
Aadhavan Srinivasan
9a3bfca313
Renamed unique_append to uniqueAppend
1 month ago
Aadhavan Srinivasan
b6ab54f6dd
Reset threads when findAllSubmatchHelper is called
1 month ago
Aadhavan Srinivasan
6a96c98d04
Fixed bug where the regex '(()|.)(b)' wouldn't compile
1 month ago
Aadhavan Srinivasan
a46d2f4546
Updated comments
1 month ago
Aadhavan Srinivasan
c88ebd1aa5
Added comments explaining what a Match is
1 month ago
Aadhavan Srinivasan
fd102292c6
Added example for FindSubmatch
1 month ago
Aadhavan Srinivasan
6d692d0dfc
Rename Group.toString() to Group.String()
1 month ago
Aadhavan Srinivasan
7c4538a259
Added 'example' file that contains testable examples
1 month ago
Aadhavan Srinivasan
2a9ae0b68a
Wrote test for 'FindSubmatch'
1 month ago
Aadhavan Srinivasan
783ae2ad10
Updated call to 'isValid' with call to 'IsValid'
1 month ago
Aadhavan Srinivasan
b5e6bc112c
Wrote 'reg.FindSubmatch()' which returns the leftmost match with submatches, renamed 'isValid' to 'IsValid' to export it, renamed 'ToString' to 'String'
1 month ago
Aadhavan Srinivasan
206fea34cd
Added function to return the number of subexpressions in the group
1 month ago
Aadhavan Srinivasan
fcdb23524a
Added more documentation
1 month ago
Aadhavan Srinivasan
ac936659b6
Updated documentation
1 month ago
Aadhavan Srinivasan
e6dba9fdcf
Updated documentation
1 month ago
Aadhavan Srinivasan
30779a446b
Updated documentation
1 month ago
