semaphore-rs-nodejs/semaphore_rs_js.js

Rust support library for Semaphore

let imports = {};
imports['__wbindgen_placeholder__'] = module.exports;
let wasm;
const { TextDecoder, TextEncoder } = require(`util`);

let cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });

cachedTextDecoder.decode();

let cachedUint8ArrayMemory0 = null;

function getUint8ArrayMemory0() {
    if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
        cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
    }
    return cachedUint8ArrayMemory0;
}

function getStringFromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
}

let WASM_VECTOR_LEN = 0;

let cachedTextEncoder = new TextEncoder('utf-8');

const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
    ? function (arg, view) {
    return cachedTextEncoder.encodeInto(arg, view);
}
    : function (arg, view) {
    const buf = cachedTextEncoder.encode(arg);
    view.set(buf);
    return {
        read: arg.length,
        written: buf.length
    };
});

function passStringToWasm0(arg, malloc, realloc) {

    if (realloc === undefined) {
        const buf = cachedTextEncoder.encode(arg);
        const ptr = malloc(buf.length, 1) >>> 0;
        getUint8ArrayMemory0().subarray(ptr, ptr + buf.length).set(buf);
        WASM_VECTOR_LEN = buf.length;
        return ptr;
    }

    let len = arg.length;
    let ptr = malloc(len, 1) >>> 0;

    const mem = getUint8ArrayMemory0();

    let offset = 0;

    for (; offset < len; offset++) {
        const code = arg.charCodeAt(offset);
        if (code > 0x7F) break;
        mem[ptr + offset] = code;
    }

    if (offset !== len) {
        if (offset !== 0) {
            arg = arg.slice(offset);
        }
        ptr = realloc(ptr, len, len = offset + arg.length * 3, 1) >>> 0;
        const view = getUint8ArrayMemory0().subarray(ptr + offset, ptr + len);
        const ret = encodeString(arg, view);

        offset += ret.written;
        ptr = realloc(ptr, len, offset, 1) >>> 0;
    }

    WASM_VECTOR_LEN = offset;
    return ptr;
}

function isLikeNone(x) {
    return x === undefined || x === null;
}

let cachedDataViewMemory0 = null;

function getDataViewMemory0() {
    if (cachedDataViewMemory0 === null || cachedDataViewMemory0.buffer.detached === true || (cachedDataViewMemory0.buffer.detached === undefined && cachedDataViewMemory0.buffer !== wasm.memory.buffer)) {
        cachedDataViewMemory0 = new DataView(wasm.memory.buffer);
    }
    return cachedDataViewMemory0;
}

function addToExternrefTable0(obj) {
    const idx = wasm.__externref_table_alloc();
    wasm.__wbindgen_export_0.set(idx, obj);
    return idx;
}

function passArrayJsValueToWasm0(array, malloc) {
    const ptr = malloc(array.length * 4, 4) >>> 0;
    for (let i = 0; i < array.length; i++) {
        const add = addToExternrefTable0(array[i]);
        getDataViewMemory0().setUint32(ptr + 4 * i, add, true);
    }
    WASM_VECTOR_LEN = array.length;
    return ptr;
}

function takeFromExternrefTable0(idx) {
    const value = wasm.__wbindgen_export_0.get(idx);
    wasm.__externref_table_dealloc(idx);
    return value;
}

function getArrayJsValueFromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    const mem = getDataViewMemory0();
    const result = [];
    for (let i = ptr; i < ptr + 4 * len; i += 4) {
        result.push(wasm.__wbindgen_export_0.get(mem.getUint32(i, true)));
    }
    wasm.__externref_drop_slice(ptr, len);
    return result;
}
/**
 * Compresses a Groth16 proof
 * @param {[string, string, string, string, string, string, string, string]} proof - An array of 8 hex encoded strings (with optional 0x prefixes) that represent an uncompressed proof
 * @returns {[string, string, string, string]} An array of 4 0x prefixed, hex encoded strings represeting a compressed proof
 */
module.exports.compressProof = function(proof) {
    const ptr0 = passArrayJsValueToWasm0(proof, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.compressProof(ptr0, len0);
    if (ret[3]) {
        throw takeFromExternrefTable0(ret[2]);
    }
    var v2 = getArrayJsValueFromWasm0(ret[0], ret[1]).slice();
    wasm.__wbindgen_free(ret[0], ret[1] * 4, 4);
    return v2;
};

/**
 * Decompresses a Groth16 proof
 * @param {[string, string, string, string]} compressedProof - An array of 4 hex encoded strings (with optional 0x prefixes) that represent a compressed proof
 * @returns {[string, string, string, string, string, string, string, string]} An array of 8 0x prefixed, hex encoded strings representing an uncompressed proof
 */
module.exports.decompressProof = function(compressedProof) {
    const ptr0 = passArrayJsValueToWasm0(compressedProof, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.decompressProof(ptr0, len0);
    if (ret[3]) {
        throw takeFromExternrefTable0(ret[2]);
    }
    var v2 = getArrayJsValueFromWasm0(ret[0], ret[1]).slice();
    wasm.__wbindgen_free(ret[0], ret[1] * 4, 4);
    return v2;
};

module.exports.__wbindgen_error_new = function(arg0, arg1) {
    const ret = new Error(getStringFromWasm0(arg0, arg1));
    return ret;
};

module.exports.__wbindgen_init_externref_table = function() {
    const table = wasm.__wbindgen_export_0;
    const offset = table.grow(4);
    table.set(0, undefined);
    table.set(offset + 0, undefined);
    table.set(offset + 1, null);
    table.set(offset + 2, true);
    table.set(offset + 3, false);
    ;
};

module.exports.__wbindgen_string_get = function(arg0, arg1) {
    const obj = arg1;
    const ret = typeof(obj) === 'string' ? obj : undefined;
    var ptr1 = isLikeNone(ret) ? 0 : passStringToWasm0(ret, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    var len1 = WASM_VECTOR_LEN;
    getDataViewMemory0().setInt32(arg0 + 4 * 1, len1, true);
    getDataViewMemory0().setInt32(arg0 + 4 * 0, ptr1, true);
};

module.exports.__wbindgen_string_new = function(arg0, arg1) {
    const ret = getStringFromWasm0(arg0, arg1);
    return ret;
};

module.exports.__wbindgen_throw = function(arg0, arg1) {
    throw new Error(getStringFromWasm0(arg0, arg1));
};

const path = require('path').join(__dirname, 'semaphore_rs_js_bg.wasm');
const bytes = require('fs').readFileSync(path);

const wasmModule = new WebAssembly.Module(bytes);
const wasmInstance = new WebAssembly.Instance(wasmModule, imports);
wasm = wasmInstance.exports;
module.exports.__wasm = wasm;

wasm.__wbindgen_start();