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Diffstat (limited to 'libgo/go/hash/hash.go')
-rw-r--r-- | libgo/go/hash/hash.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libgo/go/hash/hash.go b/libgo/go/hash/hash.go new file mode 100644 index 000000000..56ac259db --- /dev/null +++ b/libgo/go/hash/hash.go @@ -0,0 +1,36 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package hash + +import "io" + +// Hash is the common interface implemented by all hash functions. +type Hash interface { + // Write adds more data to the running hash. + // It never returns an error. + io.Writer + + // Sum returns the current hash, without changing the + // underlying hash state. + Sum() []byte + + // Reset resets the hash to one with zero bytes written. + Reset() + + // Size returns the number of bytes Sum will return. + Size() int +} + +// Hash32 is the common interface implemented by all 32-bit hash functions. +type Hash32 interface { + Hash + Sum32() uint32 +} + +// Hash64 is the common interface implemented by all 64-bit hash functions. +type Hash64 interface { + Hash + Sum64() uint64 +} |