farmhash-modern/bin/nodejs/farmhash_modern.js

FarmHash functions compiled using Rust and WebAssembly to make them easy to use in node.js and the browser

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

const heap = new Array(128).fill(undefined);

heap.push(undefined, null, true, false);

function getObject(idx) { return heap[idx]; }

let heap_next = heap.length;

function dropObject(idx) {
    if (idx < 132) return;
    heap[idx] = heap_next;
    heap_next = idx;
}

function takeObject(idx) {
    const ret = getObject(idx);
    dropObject(idx);
    return ret;
}

let cachedUint8Memory0 = null;

function getUint8Memory0() {
    if (cachedUint8Memory0 === null || cachedUint8Memory0.byteLength === 0) {
        cachedUint8Memory0 = new Uint8Array(wasm.memory.buffer);
    }
    return cachedUint8Memory0;
}

let WASM_VECTOR_LEN = 0;

function passArray8ToWasm0(arg, malloc) {
    const ptr = malloc(arg.length * 1, 1) >>> 0;
    getUint8Memory0().set(arg, ptr / 1);
    WASM_VECTOR_LEN = arg.length;
    return ptr;
}
/**
* @param {Uint8Array} input
* @returns {number}
*/
module.exports.fingerprint32 = function(input) {
    const ptr0 = passArray8ToWasm0(input, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.fingerprint32(ptr0, len0);
    return ret >>> 0;
};

/**
* @param {Uint8Array} input
* @returns {bigint}
*/
module.exports.fingerprint64 = function(input) {
    const ptr0 = passArray8ToWasm0(input, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.bigquery_fingerprint(ptr0, len0);
    return BigInt.asUintN(64, ret);
};

/**
* @param {Uint8Array} input
* @returns {bigint}
*/
module.exports.bigquery_fingerprint = function(input) {
    const ptr0 = passArray8ToWasm0(input, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.bigquery_fingerprint(ptr0, len0);
    return ret;
};

/**
* @param {Uint8Array} input
* @returns {number}
*/
module.exports.hash32 = function(input) {
    const ptr0 = passArray8ToWasm0(input, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.hash32(ptr0, len0);
    return ret >>> 0;
};

/**
* @param {Uint8Array} input
* @param {number} seed
* @returns {number}
*/
module.exports.hash32_with_seed = function(input, seed) {
    const ptr0 = passArray8ToWasm0(input, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.hash32_with_seed(ptr0, len0, seed);
    return ret >>> 0;
};

/**
* @param {Uint8Array} input
* @returns {bigint}
*/
module.exports.hash64 = function(input) {
    const ptr0 = passArray8ToWasm0(input, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.hash64(ptr0, len0);
    return BigInt.asUintN(64, ret);
};

/**
* @param {Uint8Array} input
* @param {bigint} seed
* @returns {bigint}
*/
module.exports.hash64_with_seed = function(input, seed) {
    const ptr0 = passArray8ToWasm0(input, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.hash64_with_seed(ptr0, len0, seed);
    return BigInt.asUintN(64, ret);
};

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

cachedTextDecoder.decode();

function getStringFromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
}

function addHeapObject(obj) {
    if (heap_next === heap.length) heap.push(heap.length + 1);
    const idx = heap_next;
    heap_next = heap[idx];

    heap[idx] = obj;
    return idx;
}

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;
        getUint8Memory0().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 = getUint8Memory0();

    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 = getUint8Memory0().subarray(ptr + offset, ptr + len);
        const ret = encodeString(arg, view);

        offset += ret.written;
    }

    WASM_VECTOR_LEN = offset;
    return ptr;
}

let cachedInt32Memory0 = null;

function getInt32Memory0() {
    if (cachedInt32Memory0 === null || cachedInt32Memory0.byteLength === 0) {
        cachedInt32Memory0 = new Int32Array(wasm.memory.buffer);
    }
    return cachedInt32Memory0;
}

module.exports.__wbg_new_abda76e883ba8a5f = function() {
    const ret = new Error();
    return addHeapObject(ret);
};

module.exports.__wbg_stack_658279fe44541cf6 = function(arg0, arg1) {
    const ret = getObject(arg1).stack;
    const ptr1 = passStringToWasm0(ret, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len1 = WASM_VECTOR_LEN;
    getInt32Memory0()[arg0 / 4 + 1] = len1;
    getInt32Memory0()[arg0 / 4 + 0] = ptr1;
};

module.exports.__wbg_error_f851667af71bcfc6 = function(arg0, arg1) {
    let deferred0_0;
    let deferred0_1;
    try {
        deferred0_0 = arg0;
        deferred0_1 = arg1;
        console.error(getStringFromWasm0(arg0, arg1));
    } finally {
        wasm.__wbindgen_free(deferred0_0, deferred0_1, 1);
    }
};

module.exports.__wbindgen_object_drop_ref = function(arg0) {
    takeObject(arg0);
};

const path = require('path').join(__dirname, 'farmhash_modern_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;