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Просмотр файла: proto-int64.js
// Copyright 2021-2025 Buf Technologies, Inc.
//
// 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.
import { int64FromString, int64ToString, uInt64ToString, } from "./wire/varint.js";
/**
* Int64Support for the current environment.
*/
export const protoInt64 = /*@__PURE__*/ makeInt64Support();
function makeInt64Support() {
const dv = new DataView(new ArrayBuffer(8));
// note that Safari 14 implements BigInt, but not the DataView methods
const ok = typeof BigInt === "function" &&
typeof dv.getBigInt64 === "function" &&
typeof dv.getBigUint64 === "function" &&
typeof dv.setBigInt64 === "function" &&
typeof dv.setBigUint64 === "function" &&
(typeof process != "object" ||
typeof process.env != "object" ||
process.env.BUF_BIGINT_DISABLE !== "1");
if (ok) {
const MIN = BigInt("-9223372036854775808"), MAX = BigInt("9223372036854775807"), UMIN = BigInt("0"), UMAX = BigInt("18446744073709551615");
return {
zero: BigInt(0),
supported: true,
parse(value) {
const bi = typeof value == "bigint" ? value : BigInt(value);
if (bi > MAX || bi < MIN) {
throw new Error(`invalid int64: ${value}`);
}
return bi;
},
uParse(value) {
const bi = typeof value == "bigint" ? value : BigInt(value);
if (bi > UMAX || bi < UMIN) {
throw new Error(`invalid uint64: ${value}`);
}
return bi;
},
enc(value) {
dv.setBigInt64(0, this.parse(value), true);
return {
lo: dv.getInt32(0, true),
hi: dv.getInt32(4, true),
};
},
uEnc(value) {
dv.setBigInt64(0, this.uParse(value), true);
return {
lo: dv.getInt32(0, true),
hi: dv.getInt32(4, true),
};
},
dec(lo, hi) {
dv.setInt32(0, lo, true);
dv.setInt32(4, hi, true);
return dv.getBigInt64(0, true);
},
uDec(lo, hi) {
dv.setInt32(0, lo, true);
dv.setInt32(4, hi, true);
return dv.getBigUint64(0, true);
},
};
}
return {
zero: "0",
supported: false,
parse(value) {
if (typeof value != "string") {
value = value.toString();
}
assertInt64String(value);
return value;
},
uParse(value) {
if (typeof value != "string") {
value = value.toString();
}
assertUInt64String(value);
return value;
},
enc(value) {
if (typeof value != "string") {
value = value.toString();
}
assertInt64String(value);
return int64FromString(value);
},
uEnc(value) {
if (typeof value != "string") {
value = value.toString();
}
assertUInt64String(value);
return int64FromString(value);
},
dec(lo, hi) {
return int64ToString(lo, hi);
},
uDec(lo, hi) {
return uInt64ToString(lo, hi);
},
};
}
function assertInt64String(value) {
if (!/^-?[0-9]+$/.test(value)) {
throw new Error("invalid int64: " + value);
}
}
function assertUInt64String(value) {
if (!/^[0-9]+$/.test(value)) {
throw new Error("invalid uint64: " + value);
}
}
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