resharp 0.5.2

high-performance regex engine with intersection and complement operations
Documentation 
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description = '''
expected internal representation
'''

[[test]]
name = 'foo_anch'
pattern = '^_*foo_*$'
pp = "_*foo_*"

[[test]]
pattern = 'a(?!b).*(?<!a)b'
pp = '❮a(?=~(b_*)\z){∅}❮.*❯❯(?<=(\A|[^a]))b'

[[test]]
pattern = 'aa(?!a) *'
pp = 'aa(?=~(a_*)\z){∅}❮ *❯'

[[test]]
pattern = '\s'
pp = '[\t-\r ]'

[[test]]
name = 'anchor_line_star'
pattern = '^abc.*$'
pp = '(?<=_*(\A|\n))abc.*(?=(\z|\n)_*)'
ts_rev = '_*cba(?=(\z|\n)_*)'

[[test]]
name = 'anchor_line_literal'
pattern = '^abc$'
pp = '(?<=_*(\A|\n))abc(?=(\z|\n)_*)'
ts_rev = '_*(\A|\n)cba(?=(\z|\n)_*)'

[[test]]
name = 'anchor_line_digit_star'
pattern = '^\d+$'
pp = '(?<=_*(\A|\n))[0-9]+(?=(\z|\n)_*)'
ts_rev = '_*(\A|\n)[0-9]*[0-9](?=(\z|\n)_*)'

[[test]]
name = 'anchor_line_star_leading'
pattern = '^.*abc$'
pp = '(?<=_*(\A|\n)).*abc(?=(\z|\n)_*)'
ts_rev = '_*(\A|\n)cba.*(?=(\z|\n)_*)'

[[test]]
name = 'neg_la'
pattern = '(?!a).'
pp = '[^\na]'




[[test]]
name = 'neg_la_single_byte'
pattern = 'b(?!a)'
pp = 'b(?=~(a_*)\z)'
ts_rev = '(\Ab|_*[^a]b)'

[[test]]
name = 'neg_la_ascii_word_class'
pattern = 'x(?![a-zA-Z0-9_])'
pp = 'x(?=~([0-9A-Z\_a-z]_*)\z)'
ts_rev = '(\Ax|_*[^0-9A-Z\_a-z]x)'

[[test]]
name = 'end_anchor_then_literal'
pattern = '\za'
pp = '⊥'

[[test]]
name = 'end_anchor_then_literal_after_prefix'
pattern = 'a\zb'
pp = '⊥'

[[test]]
name = 'end_anchor_then_class'
pattern = '\z[abc]'
pp = '⊥'

[[test]]
name = 'la_peel_drop'
pattern = '(?=a).'
pp = 'a'

[[test]]
name = 'la_peel_unsat_single'
pattern = '(?=a)b'
pp = '⊥'

[[test]]
name = 'la_peel_unsat_two'
pattern = '(?=ab)cd'
pp = '⊥'

[[test]]
name = 'la_peel_cascade_full'
pattern = '(?=abc)...'
pp = 'abc'

[[test]]
name = 'la_peel_partial'
pattern = '(?=a)..'
pp = 'a.'

[[test]]
name = 'la_peel_class_intersect'
pattern = '(?=[ab])[bc]'
pp = 'b'

[[test]]
name = 'la_peel_class_disjoint'
pattern = '(?=[ab])[cd]'
pp = '⊥'

[[test]]
name = 'la_peel_neg'
pattern = '$STRING:string'
pp = '⊥'


# `(?!b)(.*)` simplifies to a Lookahead with body=`~(b_*)\z` and tail=`.*`,
# rel=u32::MAX. The body asserts "next does not start with b" and is
# zero-width; the `.*` is carried as the lookahead's tail. Bug: at runtime
# this Lookahead is treated as nullable in CENTER irrespective of whether
# the assertion holds, so `(and|AND)\b(.*)` over `xxxxxANDyyyyy` yields a
# spurious match (\b fails between D and y but a match is reported).
[[test]]
name = 'neg_la_then_dotstar'
pattern = 'a(?!b)(.*)'
pp = 'a(?=~(b_*)\z){∅}❮.*❯'