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// go-sha1.h -- GCC specific sha1 checksum utilities. -*- C++ -*-
// Copyright 2016 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.
#ifndef GO_SHA1_H
#define GO_SHA1_H
#include "go-system.h"
// Interface class for computation of SHA1 checksums. Front end requests
// one of these objects from the back end to use for computing
// checksums (each back end tends to have a different SHA1 implementation).
// Back ends are expected to create a new class that derives from this
// one containing an implementation.
class Go_sha1_helper
virtual ~Go_sha1_helper() { }
virtual void process_bytes(const void* buffer, size_t len) = 0;
virtual std::string finish() = 0;
static const int checksum_len = 20;
// Call to create and return a new sha1 helper (this routine defined
// by the backend). Caller is responsible for deletion.
extern Go_sha1_helper* go_create_sha1_helper();
#endif // !defined(GO_SHA1_H)