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65 lines
2.3 KiB
Nim
65 lines
2.3 KiB
Nim
import unittest, optional_nonstrict
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include nre
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suite "captures":
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test "map capture names to numbers":
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check(getNameToNumberTable(re("(?<v1>1(?<v2>2(?<v3>3))(?'v4'4))()")) ==
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{ "v1" : 0, "v2" : 1, "v3" : 2, "v4" : 3 }.toTable())
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test "capture bounds are correct":
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let ex1 = re("([0-9])")
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check("1 23".find(ex1).matchBounds == 0 .. 0)
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check("1 23".find(ex1).captureBounds[0] == 0 .. 0)
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check("1 23".find(ex1, 1).matchBounds == 2 .. 2)
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check("1 23".find(ex1, 3).matchBounds == 3 .. 3)
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let ex2 = re("()()()()()()()()()()([0-9])")
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check("824".find(ex2).captureBounds[0] == 0 .. -1)
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check("824".find(ex2).captureBounds[10] == 0 .. 0)
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let ex3 = re("([0-9]+)")
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check("824".find(ex3).captureBounds[0] == 0 .. 2)
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test "named captures":
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let ex1 = "foobar".find(re("(?<foo>foo)(?<bar>bar)"))
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check(ex1.captures["foo"] == "foo")
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check(ex1.captures["bar"] == "bar")
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let ex2 = "foo".find(re("(?<foo>foo)(?<bar>bar)?"))
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check("foo" in ex2.captureBounds)
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check(ex2.captures["foo"] == "foo")
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check(not ("bar" in ex2.captures))
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expect KeyError:
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discard ex2.captures["bar"]
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test "named capture bounds":
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let ex1 = "foo".find(re("(?<foo>foo)(?<bar>bar)?"))
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check("foo" in ex1.captureBounds)
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check(ex1.captureBounds["foo"] == 0..2)
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check(not ("bar" in ex1.captures))
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expect KeyError:
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discard ex1.captures["bar"]
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test "capture count":
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let ex1 = re("(?<foo>foo)(?<bar>bar)?")
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check(ex1.captureCount == 2)
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check(ex1.captureNameId == {"foo" : 0, "bar" : 1}.toTable())
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test "named capture table":
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let ex1 = "foo".find(re("(?<foo>foo)(?<bar>bar)?"))
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check(ex1.captures.toTable == {"foo" : "foo"}.toTable())
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check(ex1.captureBounds.toTable == {"foo" : 0..2}.toTable())
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let ex2 = "foobar".find(re("(?<foo>foo)(?<bar>bar)?"))
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check(ex2.captures.toTable == {"foo" : "foo", "bar" : "bar"}.toTable())
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test "capture sequence":
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let ex1 = "foo".find(re("(?<foo>foo)(?<bar>bar)?"))
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check(ex1.captures.toSeq == @[some("foo"), none(string)])
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check(ex1.captureBounds.toSeq == @[some(0..2), none(Slice[int])])
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check(ex1.captures.toSeq(some("")) == @[some("foo"), some("")])
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let ex2 = "foobar".find(re("(?<foo>foo)(?<bar>bar)?"))
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check(ex2.captures.toSeq == @[some("foo"), some("bar")])
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