StructVectors.fbs

/*
 * Copyright 2021 James Courtney
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace Samples.StructVectors;

attribute "fs_serializer";
attribute "fs_nonVirtual";
attribute "fs_valueStruct";
attribute "fs_unsafeStructVector";

table Transaction (fs_serializer) {
   amount : double;
   sender : string;
   receiver : string;

   hash_reference : Sha256_Reference (required);
   hash_value : Sha256_Value (required);
   hash_fast_value : Sha256_FastValue (required);
}

// A reference (class-based) struct representing a SHA256 value.
struct Sha256_Reference
{
   value : [ubyte:32] (fs_nonVirtual);
}

// A value (struct-based) struct representing the same.
struct Sha256_Value (fs_valueStruct)
{
   value : [ ubyte : 32 ];
}

// A value (struct-based) struct using unsafe code for fast access to the value array.
// This option generates code that is not safe, but is considerably faster than the alternative.
struct Sha256_FastValue (fs_valueStruct) 
{
   Value : [ ubyte : 32 ] (fs_unsafeStructVector);
}