62 lines
2.1 KiB
JavaScript
62 lines
2.1 KiB
JavaScript
// Copyright 2021-2026 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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export function isWrapper(arg) {
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return isWrapperTypeName(arg.$typeName);
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}
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export function isWrapperDesc(messageDesc) {
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const f = messageDesc.fields[0];
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return (isWrapperTypeName(messageDesc.typeName) &&
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f !== undefined &&
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f.fieldKind == "scalar" &&
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f.name == "value" &&
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f.number == 1);
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}
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/**
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* Returns true if the descriptor is a well-known type with a custom JSON
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* representation per the protobuf JSON spec. Examples: Timestamp as an
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* RFC 3339 string, Duration as "5s", wrappers as the unwrapped scalar.
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*
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* When packed inside `google.protobuf.Any`, these messages are serialized
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* as `{"@type": ..., "value": <custom form>}`; all other messages embed
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* their fields directly.
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*/
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export function hasCustomJsonRepresentation(desc) {
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switch (desc.typeName) {
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case "google.protobuf.Any":
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case "google.protobuf.Timestamp":
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case "google.protobuf.Duration":
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case "google.protobuf.FieldMask":
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case "google.protobuf.Struct":
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case "google.protobuf.Value":
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case "google.protobuf.ListValue":
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return true;
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default:
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return isWrapperDesc(desc);
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}
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}
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function isWrapperTypeName(name) {
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return (name.startsWith("google.protobuf.") &&
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[
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"DoubleValue",
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"FloatValue",
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"Int64Value",
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"UInt64Value",
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"Int32Value",
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"UInt32Value",
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"BoolValue",
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"StringValue",
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"BytesValue",
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].includes(name.substring(16)));
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}
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