resharp 0.6.21

high-performance regex engine with intersection and complement operations
Documentation 
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description = '''
find_anchored tests: return longest match starting at position 0, or nothing.
matches = [[start, end]] in utf8 bytes (half-open intervals).
all tests use anchored = true.
'''


[[test]]
name = "match"
pattern = '\A[a-zA-Z]+\z'
input = "asdfasdf"
matches = [[0, 8]]
anchored = true

[[test]]
name = "no_match"
pattern = '\A[a-zA-Z]+\z'
input = "(asdf)asdf"
matches = []
anchored = true

[[test]]
name = "prefix_only"
pattern = '\A[0-9]+'
input = "123abc"
matches = [[0, 3]]
anchored = true

[[test]]
name = "empty_nullable"
pattern = '\A[a-z]*'
input = ""
matches = [[0, 0]]
anchored = true

[[test]]
name = "empty_non_nullable"
pattern = '\A[a-z]+'
input = ""
matches = []
anchored = true

[[test]]
name = "zero_length_star_no_leading_match"
pattern = '\Aa*'
input = "bbabbab"
matches = [[0, 0]]
anchored = true

[[test]]
name = "zero_length_star_leading_match"
pattern = '\Aa*'
input = "aabbab"
matches = [[0, 2]]
anchored = true

[[test]]
name = "zero_length_empty_pattern"
pattern = '\A'
input = "hello"
matches = [[0, 0]]
anchored = true

[[test]]
name = "zero_length_optional"
pattern = '\Aa?'
input = "xyz"
matches = [[0, 0]]
anchored = true


[[test]]
name = "no_anchor_alpha"
pattern = '[a-zA-Z]+'
input = "hello123"
matches = [[0, 5]]
anchored = true

[[test]]
name = "no_anchor_no_match"
pattern = '[a-zA-Z]+'
input = "123hello"
matches = []
anchored = true

[[test]]
name = "no_anchor_with_end"
pattern = '[a-z]+\z'
input = "hello"
matches = [[0, 5]]
anchored = true

[[test]]
name = "no_anchor_star"
pattern = 'a*'
input = "aaabb"
matches = [[0, 3]]
anchored = true

[[test]]
name = "no_anchor_nullable_no_lead"
pattern = 'x*'
input = "yyy"
matches = [[0, 0]]
anchored = true

[[test]]
name = "no_anchor_empty_input"
pattern = '[a-z]+'
input = ""
matches = []
anchored = true

[[test]]
name = "no_anchor_prefix"
pattern = '[0-9]+'
input = "42abc"
matches = [[0, 2]]
anchored = true

## TODO: consult Lean, possibly reject complement loops entirely
[[test]]
name = "complement_end_anchor_span_ab"
pattern = '~(.{1,3}\z){2,4}'
input = "ab"
matches = [[0, 1]]
anchored = true

[[test]]
name = "complement_end_anchor_span_concat"
pattern = '~(a_{0}(\z){2})+'
input = "ab"
matches = [[0, 2]]
anchored = true

[[test]]
name = "complement_end_anchor_span_optional"
pattern = '~(\W{0,2}\z{2,})?'
input = "ab"
matches = [[0, 2]]
anchored = true

[[test]]
name = "complement_end_anchor_span_class"
pattern = '~([Z-a]*[^\w]+\z+)'
input = "ab"
matches = [[0, 2]]
anchored = true

[[test]]
name = "complement_end_anchor_span_long"
pattern = '~(.{1,3}\z){2,4}'
input = "abcdef"
matches = [[0, 6]]
anchored = true

[[test]]
name = "complement_end_anchor_span_single"
pattern = '~(.{1,3}\z){2,4}'
input = "a"
matches = [[0, 0]]
anchored = true

[[test]]
name = "complement_end_anchor_span_plus"
pattern = '~(.{2}\z)+'
input = "abcde"
matches = [[0, 5]]
anchored = true

[[test]]
name = "complement_end_anchor_span_spaces"
pattern = '~(\W{0,2}\z{2,})?'
input = "  "
matches = [[0, 1]]
anchored = true