@cerbos/embedded/lib/slice.js

Client library for interacting with embedded Cerbos policy decision points generated by Cerbos Hub from server-side Node.js and browser-based applications

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Slice = void 0;
const utf8Decoder = new TextDecoder("utf-8", { fatal: true });
const utf8Encoder = new TextEncoder();
class Slice {
    offset;
    length;
    static from(allocator, offsetAndLength) {
        return new Slice(allocator, Number(offsetAndLength >> BigInt(32)), Number(offsetAndLength & BigInt(0xffffffff)));
    }
    static ofJSON(allocator, data) {
        return Slice.ofString(allocator, JSON.stringify(data));
    }
    static ofString(allocator, data) {
        const bytes = utf8Encoder.encode(data);
        const slice = new Slice(allocator, Number(allocator.allocate(bytes.length)), bytes.length);
        try {
            slice.copy(bytes);
            return slice;
        }
        catch (error) {
            slice.deallocate();
            throw error;
        }
    }
    deallocate;
    bytes;
    constructor({ memory, deallocate }, offset, length) {
        this.offset = offset;
        this.length = length;
        this.deallocate = () => {
            deallocate(offset, length);
        };
        this.bytes = new Uint8Array(memory.buffer, offset, length);
    }
    text() {
        return utf8Decoder.decode(this.bytes);
    }
    copy(bytes) {
        this.bytes.set(bytes);
    }
}
exports.Slice = Slice;
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