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31 lines
1.1 KiB
31 lines
1.1 KiB
// Copyright 2021-2024 Buf Technologies, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* Determine whether the given `arg` is a message.
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* If `desc` is set, determine whether `arg` is this specific message.
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*/
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export function isMessage(arg, schema) {
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const isMessage = arg !== null &&
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typeof arg == "object" &&
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"$typeName" in arg &&
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typeof arg.$typeName == "string";
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if (!isMessage) {
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return false;
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}
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if (schema === undefined) {
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return true;
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}
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return schema.typeName === arg.$typeName;
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}
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