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denoland-deno/js/fbs_util.ts
2018-09-05 08:45:55 -04:00

27 lines
808 B
TypeScript

// Copyright 2018 the Deno authors. All rights reserved. MIT license.
import { libdeno } from "./libdeno";
import { flatbuffers } from "flatbuffers";
import { maybeThrowError } from "./errors";
import { deno as fbs } from "gen/msg_generated";
// @internal
export function send(
builder: flatbuffers.Builder,
msgType: fbs.Any,
msg: flatbuffers.Offset
): null | fbs.Base {
fbs.Base.startBase(builder);
fbs.Base.addMsg(builder, msg);
fbs.Base.addMsgType(builder, msgType);
builder.finish(fbs.Base.endBase(builder));
const resBuf = libdeno.send(builder.asUint8Array());
if (resBuf == null) {
return null;
} else {
const bb = new flatbuffers.ByteBuffer(new Uint8Array(resBuf!));
const baseRes = fbs.Base.getRootAsBase(bb);
maybeThrowError(baseRes);
return baseRes;
}
}