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25bccf4883
- Remove `[?]` syntax. - Change `int!` to `int?` syntax. - New `fault` declarations. - Enum associated values can reference the calling enum.
41 lines
1.0 KiB
Plaintext
41 lines
1.0 KiB
Plaintext
module std::math::uuid;
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import std::math::random @public;
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import std::io;
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distinct Uuid (Printable) = char[16];
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<*
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Generate a version 4 UUID from the default random.
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*>
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fn Uuid generate()
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{
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random::init_default_random();
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return generate_from_random(&random::default_random);
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}
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<*
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Generate a version 4 UUID from the given random.
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*>
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fn Uuid generate_from_random(Random random)
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{
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Uuid uuid;
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random.next_bytes(&(char[16])uuid);
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uuid[6] = (uuid[6] & 0b0000_1111) | 0b0100_0000;
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uuid[8] = (uuid[8] & 0b0011_1111) | 0b1000_0000;
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return uuid;
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}
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fn usz? Uuid.to_format(&self, Formatter* formatter) @dynamic
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{
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return formatter.printf("%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
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(*self)[0], (*self)[1], (*self)[2], (*self)[3],
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(*self)[4], (*self)[5],
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(*self)[6], (*self)[7],
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(*self)[8], (*self)[9],
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(*self)[10], (*self)[11], (*self)[12], (*self)[13], (*self)[14], (*self)[15]);
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}
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fn String Uuid.to_string(&self, Allocator allocator)
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{
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return string::format(allocator, "%s", *self);
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} |