Commit Graph

441 Commits

Author SHA1 Message Date
393769f152 Accounted for last character being a newline when checking for EOS (we can be at the second-last character if the last one is a newline 2024-11-27 11:44:39 -05:00
e36310b32d Added function (and helper functions) to generate a regex that matches all numbers in a range 2024-11-27 11:43:57 -05:00
298285e44c Added more test cases 2024-11-27 11:43:34 -05:00
0de3a94ce3 Fixed bug with lookaheads: f(?=f) would not match anything in 'ffa', because of the 'a' at the end of the string. Fixed by checking if there are other last states when an assertion fails, rather than immediately aborting 2024-11-24 15:04:51 -05:00
fe1136c54c Fixed bug with parentheses in lookaround regex; fixed bug with reading last line of test string (if it doesn't end in a newline) 2024-11-24 15:02:58 -05:00
25c333bea4 Added function to determine if a state is a lookaround 2024-11-24 15:01:06 -05:00
74c177324b Added more test cases 2024-11-24 15:00:47 -05:00
7916629c4d Added substitute flag - substitute matched text with given text 2024-11-23 10:12:22 -05:00
ee02e7575e Added function to generate all case variations of a rune 2024-11-23 09:26:27 -05:00
c87a4b7136 Added case-insensitve flag 2024-11-23 09:26:11 -05:00
924e2a8dbc Added some AI-generated test cases (llama3.1:405b) 2024-11-22 00:12:41 -05:00
21b2d5a2a9 Added lookaround-related fields to postfixNode struct 2024-11-22 00:12:22 -05:00
77d19cd84e Added lookaround-related fields to State struct, added lookaround support to checkAssertion() 2024-11-22 00:11:51 -05:00
051a8551f3 Match zero-length match at end of string, even if the start node is an assertion (end of string, lookarounds, etc.) 2024-11-22 00:10:58 -05:00
11c0a0552f Added support for lokarounds; parsing and adding nodes for different lookarounds 2024-11-22 00:10:15 -05:00
c807d6664e Changed generation of characters for non-whitespace, non-digit and non-word characters - it's basically an inverted character class now 2024-11-20 10:39:24 -05:00
d986999001 Added more tests 2024-11-20 10:38:57 -05:00
ea64ddc88a Removed unnecessary duplication of assertion checking 2024-11-20 10:38:41 -05:00
1ba871d618 Removed dotChars() function, moved notDotChars() setting to main() 2024-11-20 10:38:22 -05:00
1a1a8f4f9c Moved flag-checking after flag.Parse() 2024-11-20 10:37:33 -05:00
e882f41400 Added fields to denote all the characters that an 'allChars' postfixNode _shouldn't_ represent (useful for inverting character classes) 2024-11-20 09:41:37 -05:00
b3ee1fe5e8 Convert an inverting character class into an 'allChars' node, with the characters marked as exceptions 2024-11-20 09:40:40 -05:00
708a9e1303 Added field to denote all characters which an 'allChars' node _shouldn't_ match (useful for invertinc character classes 2024-11-20 09:39:24 -05:00
c694c47be7 Added flag to print match indices, and to enable multi-line mode 2024-11-20 01:06:23 -05:00
2569f52552 Wrote toString function for MatchIndex 2024-11-20 01:04:31 -05:00
160b2f9215 Added newline character as an escaped node 2024-11-20 01:04:01 -05:00
992c5a9300 Replaced isAlphaNum() with isNormalChar(), which returns true if the character isn't special (also returns true for unicode characters, which the previous function didn't 2024-11-20 00:24:43 -05:00
1e0502c6aa Added unicode tests 2024-11-20 00:23:57 -05:00
c56d81a335 Added unicode support to dot metacharacter - it now matches _any_ unicode character (almost) 2024-11-18 16:44:43 -05:00
8a1f1dc621 Added unicode support
Replaced strings with rune-slices, which capture unicode codepoints more
accurately.
2024-11-18 10:41:50 -05:00
805766a5ba Added support for -l : only print lines with at least one match (or with exactly 0 matches, if -v is enabled 2024-11-18 10:02:34 -05:00
dcd712dceb Added support for -o flag: only print matching content 2024-11-18 09:36:16 -05:00
f2b8812b05 Added support for -v flag, to invert which values are printed in color. Also got rid of unecessary 'else' clause 2024-11-17 22:19:55 -05:00
11641596fa Read multiple lines from stdin and apply regex to each one; Convert the array of matchIndex structs into a flat array of indices; speeds up process of checking if we have to print a character in color 2024-11-17 21:49:11 -05:00
b55b80ec6c Updated TODO
I didn't like the existing capturing group implementation, so I moved
that to a separate branch. This branch does not (at the moment) any code
relating to capturing groups.
2024-11-17 21:29:18 -05:00
137ea3c746 Made findAllMatchesHelper non-recursive, added pruneIndices (improved performance) and more changes
I made findAllMatchesHelper a non-recursive function. It now only
returns the first match it finds in the string (so I should probably
rename it).

These indices are collected by findAllMatches and pruned (to
remove overlaps). The overlap function has also been rewritten, to make
it (I believe) less than O(n^2). I also used the uniq_arr type to make
checking for uniqueness O(1) instaed of O(n) (as it was with
unique_append()). This has resulted in massive performance gains.

There's been a lot of changes here, and I probably haven't documented
all of them.
2024-11-07 16:16:50 -05:00
9201ed49bd Changed type from matchIndex to MatchIndex 2024-11-07 16:12:21 -05:00
9a073aa514 Added node types for left and right parentheses 2024-11-07 15:55:37 -05:00
7d265495f5 Got rid of list for uniq_arr (O(n) deletion) and instead have separate method to create list (O(n) list creation) 2024-11-07 15:55:13 -05:00
e2e99ff6a9 Added fnunction to generate numbers in a range; added capacity to some slices to prevent unnecessary reallocations 2024-11-06 15:16:51 -05:00
8a69ea8cb7 Added unique array data structure - O(1) addition and retrieval (I think) 2024-11-06 15:15:44 -05:00
ea17251bf8 Might have made a change to improve performance 2024-11-04 08:42:26 -05:00
e8aca8606a Added test cases 2024-11-03 15:09:21 -05:00
9698c4f1d8 Fixed error in calculating word boundary (off-by-one) 2024-11-03 15:04:57 -05:00
c032dcb2ea Added more test cases 2024-11-03 15:04:19 -05:00
269e2d0e1c Updated go.mod 2024-11-03 14:38:46 -05:00
21142e6e13 Wrote function to clone the NFA starting at a given state, and a function to find question mark operator (a? == (a|)) 2024-11-03 14:37:38 -05:00
b602295bee Added support for specifying how often a postfixNode is repeated 2024-11-03 14:36:56 -05:00
1d9d1a5b81 Fixed calculation of overlapping (used to check for subset instead) 2024-11-03 14:36:23 -05:00
d8f52b8ccc Added support for numeric specifiers, moved question mark operator to its own function 2024-11-03 14:36:04 -05:00