Rearrange sources (#4997)

include/xrpl/protocol/Keylet.h

@@ -0,0 +1,54 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_PROTOCOL_KEYLET_H_INCLUDED
+#define RIPPLE_PROTOCOL_KEYLET_H_INCLUDED
+
+#include <ripple/basics/base_uint.h>
+#include <ripple/protocol/LedgerFormats.h>
+
+namespace ripple {
+
+class STLedgerEntry;
+
+/** A pair of SHAMap key and LedgerEntryType.
+
+    A Keylet identifies both a key in the state map
+    and its ledger entry type.
+
+    @note Keylet is a portmanteau of the words key
+          and LET, an acronym for LedgerEntryType.
+*/
+struct Keylet
+{
+    uint256 key;
+    LedgerEntryType type;
+
+    Keylet(LedgerEntryType type_, uint256 const& key_) : key(key_), type(type_)
+    {
+    }
+
+    /** Returns true if the SLE matches the type */
+    bool
+    check(STLedgerEntry const&) const;
+};
+
+}  // namespace ripple
+
+#endif