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chore: improve pattern match

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This commit is contained in:
Shunsuke Shibayama 2023-09-27 11:59:20 +09:00
parent 5c757b83f5
commit f561eebc2f
9 changed files with 343 additions and 125 deletions
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38
crates/erg_compiler/lib/std/semver.er
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@ -1,13 +1,35 @@
# e.g. `nightly.0`
.Identifier = Class { .name = Str; .num = Nat }
.Identifier|<: Show|.
__str__ ref self = "\{self.name}.\{self.num}"
.Identifier|.Identifier <: Eq|.
__eq__ self, other: .Identifier =
self.name == other.name and self.num == other.num
.Identifier.
from_str s: Str =
match s.split("."):
[name, num] ->
num_ = nat(num)
assert num_ in Nat
.Identifier::__new__ { .name; .num = num_ }
_ -> panic "invalid identifier string: \{s}"
.Version = Class { .major = Nat; .minor = Nat; .patch = Nat; .pre = .Identifier or NoneType }
.Version.
.SemVer = Class { .major = Nat; .minor = Nat; .patch = Nat; .pre = .Identifier or NoneType }
.SemVer|<: Show|.
__str__ ref self =
if self.pre != None:
do: "SemVer(\{self.major}.\{self.minor}.\{self.patch}-\{self.pre})"
do: "SemVer(\{self.major}.\{self.minor}.\{self.patch})"
.SemVer.
new major, minor, patch, pre := None =
.Version::__new__ { .major = major; .minor = minor; .patch = patch; .pre = pre }
.SemVer::__new__ { .major; .minor; .patch; .pre }
from_str s: Str =
match s.split("."):
[major, minor, patch] ->
.SemVer.new(nat(major), nat(minor), nat(patch))
[major, minor, patch, pre] ->
.SemVer.new(nat(major), nat(minor), nat(patch), .Identifier.from_str(pre))
_ -> panic "invalid semver string: \{s}"
#[
greater self, other: .Version =
match [self.major > other.major, self.major >= other.major, self.minor > other.minor, self.minor >= other.minor, self.patch > other.patch]:
@ -16,12 +38,14 @@
[_, True, _, True, True] -> True
_ -> False
]#
.Version|.Version <: Eq|.
__eq__ self, other: .Version =
.SemVer|<: Eq|.
__eq__ self, other: .SemVer =
self.major == other.major and self.minor == other.minor and self.patch == other.patch and self.pre == other.pre
if! __name__ == "__main__", do!:
v = .Version.new(0, 0, 1)
v = .SemVer.new(0, 0, 1)
assert v.minor == 0
assert v.pre == None
assert v != .Version.new(0, 0, 2)
assert v != .SemVer.new(0, 0, 2)
v2 = .SemVer.from_str("0.0.1")
assert v == v2