@alcorexchange/alcor-swap-sdk/build/utils/wasm_route_finder.js

​​ **npm** ``` npm i @alcorexchange/alcor-swap-sdk ``` **yarn** ``` yarn add @alcorexchange/alcor-swap-sdk ``` ## Usage ### Import:

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

function addToExternrefTable0(obj) {
    const idx = wasm.__externref_table_alloc();
    wasm.__wbindgen_export_2.set(idx, obj);
    return idx;
}

function handleError(f, args) {
    try {
        return f.apply(this, args);
    } catch (e) {
        const idx = addToExternrefTable0(e);
        wasm.__wbindgen_exn_store(idx);
    }
}

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 debugString(val) {
    // primitive types
    const type = typeof val;
    if (type == 'number' || type == 'boolean' || val == null) {
        return  `${val}`;
    }
    if (type == 'string') {
        return `"${val}"`;
    }
    if (type == 'symbol') {
        const description = val.description;
        if (description == null) {
            return 'Symbol';
        } else {
            return `Symbol(${description})`;
        }
    }
    if (type == 'function') {
        const name = val.name;
        if (typeof name == 'string' && name.length > 0) {
            return `Function(${name})`;
        } else {
            return 'Function';
        }
    }
    // objects
    if (Array.isArray(val)) {
        const length = val.length;
        let debug = '[';
        if (length > 0) {
            debug += debugString(val[0]);
        }
        for(let i = 1; i < length; i++) {
            debug += ', ' + debugString(val[i]);
        }
        debug += ']';
        return debug;
    }
    // Test for built-in
    const builtInMatches = /\[object ([^\]]+)\]/.exec(toString.call(val));
    let className;
    if (builtInMatches && builtInMatches.length > 1) {
        className = builtInMatches[1];
    } else {
        // Failed to match the standard '[object ClassName]'
        return toString.call(val);
    }
    if (className == 'Object') {
        // we're a user defined class or Object
        // JSON.stringify avoids problems with cycles, and is generally much
        // easier than looping through ownProperties of `val`.
        try {
            return 'Object(' + JSON.stringify(val) + ')';
        } catch (_) {
            return 'Object';
        }
    }
    // errors
    if (val instanceof Error) {
        return `${val.name}: ${val.message}\n${val.stack}`;
    }
    // TODO we could test for more things here, like `Set`s and `Map`s.
    return className;
}

let WASM_VECTOR_LEN = 0;

let cachedUint8ArrayMemory0 = null;

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

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;
}

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

cachedTextDecoder.decode();

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

function takeFromExternrefTable0(idx) {
    const value = wasm.__wbindgen_export_2.get(idx);
    wasm.__externref_table_dealloc(idx);
    return value;
}
/**
 * @param {any} pools_js
 */
module.exports.init_pools_fast = function(pools_js) {
    const ret = wasm.init_pools_fast(pools_js);
    if (ret[1]) {
        throw takeFromExternrefTable0(ret[0]);
    }
};

/**
 * @param {any} pools_js
 */
module.exports.update_pools_fast = function(pools_js) {
    const ret = wasm.update_pools_fast(pools_js);
    if (ret[1]) {
        throw takeFromExternrefTable0(ret[0]);
    }
};

/**
 * @param {string} token_in_id
 * @param {string} token_out_id
 * @param {number} max_hops
 * @returns {any}
 */
module.exports.compute_routes_fast = function(token_in_id, token_out_id, max_hops) {
    const ptr0 = passStringToWasm0(token_in_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len0 = WASM_VECTOR_LEN;
    const ptr1 = passStringToWasm0(token_out_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len1 = WASM_VECTOR_LEN;
    const ret = wasm.compute_routes_fast(ptr0, len0, ptr1, len1, max_hops);
    if (ret[2]) {
        throw takeFromExternrefTable0(ret[1]);
    }
    return takeFromExternrefTable0(ret[0]);
};

module.exports.clear_pools = function() {
    wasm.clear_pools();
};

/**
 * @returns {number}
 */
module.exports.get_pool_count = function() {
    const ret = wasm.get_pool_count();
    return ret >>> 0;
};

/**
 * @param {any} pools_js
 */
module.exports.init_pools_with_data = function(pools_js) {
    const ret = wasm.init_pools_with_data(pools_js);
    if (ret[1]) {
        throw takeFromExternrefTable0(ret[0]);
    }
};

let cachedUint32ArrayMemory0 = null;

function getUint32ArrayMemory0() {
    if (cachedUint32ArrayMemory0 === null || cachedUint32ArrayMemory0.byteLength === 0) {
        cachedUint32ArrayMemory0 = new Uint32Array(wasm.memory.buffer);
    }
    return cachedUint32ArrayMemory0;
}

function passArray32ToWasm0(arg, malloc) {
    const ptr = malloc(arg.length * 4, 4) >>> 0;
    getUint32ArrayMemory0().set(arg, ptr / 4);
    WASM_VECTOR_LEN = arg.length;
    return ptr;
}
/**
 * @param {Uint32Array} route_pool_ids
 * @param {string} amount_in
 * @param {string} token_in_id
 * @returns {any}
 */
module.exports.calculate_trade_output = function(route_pool_ids, amount_in, token_in_id) {
    const ptr0 = passArray32ToWasm0(route_pool_ids, wasm.__wbindgen_malloc);
    const len0 = WASM_VECTOR_LEN;
    const ptr1 = passStringToWasm0(amount_in, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len1 = WASM_VECTOR_LEN;
    const ptr2 = passStringToWasm0(token_in_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len2 = WASM_VECTOR_LEN;
    const ret = wasm.calculate_trade_output(ptr0, len0, ptr1, len1, ptr2, len2);
    if (ret[2]) {
        throw takeFromExternrefTable0(ret[1]);
    }
    return takeFromExternrefTable0(ret[0]);
};

/**
 * @param {any} routes_js
 * @param {any} amounts_js
 * @param {string} token_in_id
 * @returns {any}
 */
module.exports.calculate_trades_for_routes = function(routes_js, amounts_js, token_in_id) {
    const ptr0 = passStringToWasm0(token_in_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.calculate_trades_for_routes(routes_js, amounts_js, ptr0, len0);
    if (ret[2]) {
        throw takeFromExternrefTable0(ret[1]);
    }
    return takeFromExternrefTable0(ret[0]);
};

/**
 * Execute a swap on a single pool
 * This is the main entry point for WASM swap calculations
 * @param {number} pool_id
 * @param {boolean} zero_for_one
 * @param {string} amount_specified
 * @param {string | null} [sqrt_price_limit_x64]
 * @returns {any}
 */
module.exports.pool_swap = function(pool_id, zero_for_one, amount_specified, sqrt_price_limit_x64) {
    const ptr0 = passStringToWasm0(amount_specified, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len0 = WASM_VECTOR_LEN;
    var ptr1 = isLikeNone(sqrt_price_limit_x64) ? 0 : passStringToWasm0(sqrt_price_limit_x64, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    var len1 = WASM_VECTOR_LEN;
    const ret = wasm.pool_swap(pool_id, zero_for_one, ptr0, len0, ptr1, len1);
    if (ret[2]) {
        throw takeFromExternrefTable0(ret[1]);
    }
    return takeFromExternrefTable0(ret[0]);
};

/**
 * Get the number of pools with full swap data
 * @returns {number}
 */
module.exports.get_full_pool_count = function() {
    const ret = wasm.get_full_pool_count();
    return ret >>> 0;
};

/**
 * Debug: get sqrt ratio at tick
 * @param {number} tick
 * @returns {string}
 */
module.exports.debug_get_sqrt_ratio_at_tick = function(tick) {
    let deferred1_0;
    let deferred1_1;
    try {
        const ret = wasm.debug_get_sqrt_ratio_at_tick(tick);
        deferred1_0 = ret[0];
        deferred1_1 = ret[1];
        return getStringFromWasm0(ret[0], ret[1]);
    } finally {
        wasm.__wbindgen_free(deferred1_0, deferred1_1, 1);
    }
};

/**
 * Debug: get tick at sqrt ratio
 * @param {string} sqrt_price_x64
 * @returns {number}
 */
module.exports.debug_get_tick_at_sqrt_ratio = function(sqrt_price_x64) {
    const ptr0 = passStringToWasm0(sqrt_price_x64, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len0 = WASM_VECTOR_LEN;
    const ret = wasm.debug_get_tick_at_sqrt_ratio(ptr0, len0);
    return ret;
};

/**
 * Debug: test U256 division
 * @returns {string}
 */
module.exports.debug_u256_div_test = function() {
    let deferred1_0;
    let deferred1_1;
    try {
        const ret = wasm.debug_u256_div_test();
        deferred1_0 = ret[0];
        deferred1_1 = ret[1];
        return getStringFromWasm0(ret[0], ret[1]);
    } finally {
        wasm.__wbindgen_free(deferred1_0, deferred1_1, 1);
    }
};

module.exports.__wbg_buffer_609cc3eee51ed158 = function(arg0) {
    const ret = arg0.buffer;
    return ret;
};

module.exports.__wbg_call_672a4d21634d4a24 = function() { return handleError(function (arg0, arg1) {
    const ret = arg0.call(arg1);
    return ret;
}, arguments) };

module.exports.__wbg_done_769e5ede4b31c67b = function(arg0) {
    const ret = arg0.done;
    return ret;
};

module.exports.__wbg_entries_3265d4158b33e5dc = function(arg0) {
    const ret = Object.entries(arg0);
    return ret;
};

module.exports.__wbg_get_67b2ba62fc30de12 = function() { return handleError(function (arg0, arg1) {
    const ret = Reflect.get(arg0, arg1);
    return ret;
}, arguments) };

module.exports.__wbg_get_b9b93047fe3cf45b = function(arg0, arg1) {
    const ret = arg0[arg1 >>> 0];
    return ret;
};

module.exports.__wbg_instanceof_ArrayBuffer_e14585432e3737fc = function(arg0) {
    let result;
    try {
        result = arg0 instanceof ArrayBuffer;
    } catch (_) {
        result = false;
    }
    const ret = result;
    return ret;
};

module.exports.__wbg_instanceof_Map_f3469ce2244d2430 = function(arg0) {
    let result;
    try {
        result = arg0 instanceof Map;
    } catch (_) {
        result = false;
    }
    const ret = result;
    return ret;
};

module.exports.__wbg_instanceof_Uint8Array_17156bcf118086a9 = function(arg0) {
    let result;
    try {
        result = arg0 instanceof Uint8Array;
    } catch (_) {
        result = false;
    }
    const ret = result;
    return ret;
};

module.exports.__wbg_isArray_a1eab7e0d067391b = function(arg0) {
    const ret = Array.isArray(arg0);
    return ret;
};

module.exports.__wbg_isSafeInteger_343e2beeeece1bb0 = function(arg0) {
    const ret = Number.isSafeInteger(arg0);
    return ret;
};

module.exports.__wbg_iterator_9a24c88df860dc65 = function() {
    const ret = Symbol.iterator;
    return ret;
};

module.exports.__wbg_length_a446193dc22c12f8 = function(arg0) {
    const ret = arg0.length;
    return ret;
};

module.exports.__wbg_length_e2d2a49132c1b256 = function(arg0) {
    const ret = arg0.length;
    return ret;
};

module.exports.__wbg_new_405e22f390576ce2 = function() {
    const ret = new Object();
    return ret;
};

module.exports.__wbg_new_5e0be73521bc8c17 = function() {
    const ret = new Map();
    return ret;
};

module.exports.__wbg_new_78feb108b6472713 = function() {
    const ret = new Array();
    return ret;
};

module.exports.__wbg_new_a12002a7f91c75be = function(arg0) {
    const ret = new Uint8Array(arg0);
    return ret;
};

module.exports.__wbg_next_25feadfc0913fea9 = function(arg0) {
    const ret = arg0.next;
    return ret;
};

module.exports.__wbg_next_6574e1a8a62d1055 = function() { return handleError(function (arg0) {
    const ret = arg0.next();
    return ret;
}, arguments) };

module.exports.__wbg_set_37837023f3d740e8 = function(arg0, arg1, arg2) {
    arg0[arg1 >>> 0] = arg2;
};

module.exports.__wbg_set_3f1d0b984ed272ed = function(arg0, arg1, arg2) {
    arg0[arg1] = arg2;
};

module.exports.__wbg_set_65595bdd868b3009 = function(arg0, arg1, arg2) {
    arg0.set(arg1, arg2 >>> 0);
};

module.exports.__wbg_set_8fc6bf8a5b1071d1 = function(arg0, arg1, arg2) {
    const ret = arg0.set(arg1, arg2);
    return ret;
};

module.exports.__wbg_value_cd1ffa7b1ab794f1 = function(arg0) {
    const ret = arg0.value;
    return ret;
};

module.exports.__wbindgen_as_number = function(arg0) {
    const ret = +arg0;
    return ret;
};

module.exports.__wbindgen_bigint_from_i64 = function(arg0) {
    const ret = arg0;
    return ret;
};

module.exports.__wbindgen_bigint_from_u64 = function(arg0) {
    const ret = BigInt.asUintN(64, arg0);
    return ret;
};

module.exports.__wbindgen_bigint_get_as_i64 = function(arg0, arg1) {
    const v = arg1;
    const ret = typeof(v) === 'bigint' ? v : undefined;
    getDataViewMemory0().setBigInt64(arg0 + 8 * 1, isLikeNone(ret) ? BigInt(0) : ret, true);
    getDataViewMemory0().setInt32(arg0 + 4 * 0, !isLikeNone(ret), true);
};

module.exports.__wbindgen_boolean_get = function(arg0) {
    const v = arg0;
    const ret = typeof(v) === 'boolean' ? (v ? 1 : 0) : 2;
    return ret;
};

module.exports.__wbindgen_debug_string = function(arg0, arg1) {
    const ret = debugString(arg1);
    const ptr1 = passStringToWasm0(ret, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
    const len1 = WASM_VECTOR_LEN;
    getDataViewMemory0().setInt32(arg0 + 4 * 1, len1, true);
    getDataViewMemory0().setInt32(arg0 + 4 * 0, ptr1, true);
};

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

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

module.exports.__wbindgen_init_externref_table = function() {
    const table = wasm.__wbindgen_export_2;
    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_is_bigint = function(arg0) {
    const ret = typeof(arg0) === 'bigint';
    return ret;
};

module.exports.__wbindgen_is_function = function(arg0) {
    const ret = typeof(arg0) === 'function';
    return ret;
};

module.exports.__wbindgen_is_object = function(arg0) {
    const val = arg0;
    const ret = typeof(val) === 'object' && val !== null;
    return ret;
};

module.exports.__wbindgen_is_string = function(arg0) {
    const ret = typeof(arg0) === 'string';
    return ret;
};

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

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

module.exports.__wbindgen_memory = function() {
    const ret = wasm.memory;
    return ret;
};

module.exports.__wbindgen_number_get = function(arg0, arg1) {
    const obj = arg1;
    const ret = typeof(obj) === 'number' ? obj : undefined;
    getDataViewMemory0().setFloat64(arg0 + 8 * 1, isLikeNone(ret) ? 0 : ret, true);
    getDataViewMemory0().setInt32(arg0 + 4 * 0, !isLikeNone(ret), true);
};

module.exports.__wbindgen_number_new = function(arg0) {
    const ret = arg0;
    return ret;
};

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, 'wasm_route_finder_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();