@iota-pico/pow-wasm
Version:
IOTA Pico Framework Proof Of Work WebAssembly
1,154 lines (1,026 loc) • 530 kB
JavaScript
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module.exports = factory(require("@iota-pico/core/dist/helpers/numberHelper"), require("@iota-pico/core/dist/helpers/objectHelper"), require("@iota-pico/crypto/dist/error/cryptoError"), require("@iota-pico/crypto/dist/proofOfWork/proofOfWorkBase"), require("@iota-pico/data/dist/data/trytes"));
else if(typeof define === 'function' && define.amd)
define("@iota-pico/pow-wasm", ["@iota-pico/core/dist/helpers/numberHelper", "@iota-pico/core/dist/helpers/objectHelper", "@iota-pico/crypto/dist/error/cryptoError", "@iota-pico/crypto/dist/proofOfWork/proofOfWorkBase", "@iota-pico/data/dist/data/trytes"], factory);
else if(typeof exports === 'object')
exports["@iota-pico/pow-wasm"] = factory(require("@iota-pico/core/dist/helpers/numberHelper"), require("@iota-pico/core/dist/helpers/objectHelper"), require("@iota-pico/crypto/dist/error/cryptoError"), require("@iota-pico/crypto/dist/proofOfWork/proofOfWorkBase"), require("@iota-pico/data/dist/data/trytes"));
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/***/ "./dist.es6/index.js":
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/***/ (function(module, exports, __webpack_require__) {
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = __webpack_require__(/*! tslib */ "./node_modules/tslib/tslib.es6.js");
/**
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*/
tslib_1.__exportStar(__webpack_require__(/*! ./proofOfWorkWasm */ "./dist.es6/proofOfWorkWasm.js"), exports);
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/// <reference types="emscripten" />
const numberHelper_1 = __webpack_require__(/*! @iota-pico/core/dist/helpers/numberHelper */ "@iota-pico/core/dist/helpers/numberHelper");
const objectHelper_1 = __webpack_require__(/*! @iota-pico/core/dist/helpers/objectHelper */ "@iota-pico/core/dist/helpers/objectHelper");
const cryptoError_1 = __webpack_require__(/*! @iota-pico/crypto/dist/error/cryptoError */ "@iota-pico/crypto/dist/error/cryptoError");
const proofOfWorkBase_1 = __webpack_require__(/*! @iota-pico/crypto/dist/proofOfWork/proofOfWorkBase */ "@iota-pico/crypto/dist/proofOfWork/proofOfWorkBase");
const trytes_1 = __webpack_require__(/*! @iota-pico/data/dist/data/trytes */ "@iota-pico/data/dist/data/trytes");
// @ts-ignore
const iota_pico_pow_wasm_1 = tslib_1.__importDefault(__webpack_require__(/*! ../wasm/iota-pico-pow-wasm */ "./wasm/iota-pico-pow-wasm.js"));
/**
* ProofOfWork implementation using WebAssembly.
*/
class ProofOfWorkWasm extends proofOfWorkBase_1.ProofOfWorkBase {
/**
* Create a new instance of ProofOfWork.
* @param webPlatform Provides platform specific functions, optional mostly used for testing.
* @param timeService Service to get the time for attachments.
*/
constructor(webPlatform, timeService) {
super(timeService);
if (objectHelper_1.ObjectHelper.isEmpty(webPlatform)) {
this._webPlatform = {
webAssemblyType: typeof WebAssembly,
wasmModuleLoader: iota_pico_pow_wasm_1.default
};
}
else {
this._webPlatform = webPlatform;
}
}
/**
* Allow the proof of work to perform any initialization.
* Will throw an exception if the implementation is not supported.
* @returns Promise.
*/
initialize() {
const _super = name => super[name];
return tslib_1.__awaiter(this, void 0, void 0, function* () {
yield _super("initialize").call(this);
return new Promise((resolve, reject) => tslib_1.__awaiter(this, void 0, void 0, function* () {
if (objectHelper_1.ObjectHelper.isEmpty(this._webPlatform.webAssemblyType) || this._webPlatform.webAssemblyType === "undefined") {
reject(new cryptoError_1.CryptoError("No WebAssembly support detected"));
}
const module = {};
module.onRuntimeInitialized = () => {
this._ccurlPow = module.cwrap("ccurl_pow", "string", ["string", "number"]);
resolve();
};
try {
this._webPlatform.wasmModuleLoader(module);
}
catch (err) {
reject(new cryptoError_1.CryptoError("There was a problem intializing the WebAssembly Module", undefined, err));
}
}));
});
}
/**
* Perform a proof of work on a single item.
* @param trytes The trytes to perform the pow on.
* @param minWeightMagnitude The minimum weight magnitude.
* @returns The trytes produced by the proof of work.
*/
singlePow(trytes, minWeightMagnitude) {
return tslib_1.__awaiter(this, void 0, void 0, function* () {
return new Promise((resolve, reject) => {
if (objectHelper_1.ObjectHelper.isEmpty(this._ccurlPow)) {
throw new cryptoError_1.CryptoError("WebAssembly not loaded, have you called initialize");
}
if (!objectHelper_1.ObjectHelper.isType(trytes, trytes_1.Trytes)) {
throw new cryptoError_1.CryptoError("The trytes must be an object of type Trytes");
}
if (!numberHelper_1.NumberHelper.isInteger(minWeightMagnitude) || minWeightMagnitude <= 0) {
throw new cryptoError_1.CryptoError("The minWeightMagnitude must be > 0");
}
try {
const result = this._ccurlPow(trytes.toString(), minWeightMagnitude);
resolve(trytes_1.Trytes.fromString(result));
}
catch (err) {
reject(err);
}
});
});
}
}
exports.ProofOfWorkWasm = ProofOfWorkWasm;
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/*! *****************************************************************************
Copyright (c) Microsoft Corporation. All rights reserved.
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
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABLITY OR NON-INFRINGEMENT.
See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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extendStatics(d, b);
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}
function __await(v) {
return this instanceof __await ? (this.v = v, this) : new __await(v);
}
function __asyncGenerator(thisArg, _arguments, generator) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var g = generator.apply(thisArg, _arguments || []), i, q = [];
return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i;
function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }
function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }
function fulfill(value) { resume("next", value); }
function reject(value) { resume("throw", value); }
function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
}
function __asyncDelegator(o) {
var i, p;
return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === "return" } : f ? f(v) : v; } : f; }
}
function __asyncValues(o) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var m = o[Symbol.asyncIterator], i;
return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
}
function __makeTemplateObject(cooked, raw) {
if (Object.defineProperty) { Object.defineProperty(cooked, "raw", { value: raw }); } else { cooked.raw = raw; }
return cooked;
};
function __importStar(mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
result.default = mod;
return result;
}
function __importDefault(mod) {
return (mod && mod.__esModule) ? mod : { default: mod };
}
/***/ }),
/***/ "./wasm/iota-pico-pow-wasm.js":
/*!************************************!*\
!*** ./wasm/iota-pico-pow-wasm.js ***!
\************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
var Module = function(Module) {
Module = Module || {};
// The Module object: Our interface to the outside world. We import
// and export values on it. There are various ways Module can be used:
// 1. Not defined. We create it here
// 2. A function parameter, function(Module) { ..generated code.. }
// 3. pre-run appended it, var Module = {}; ..generated code..
// 4. External script tag defines var Module.
// We need to check if Module already exists (e.g. case 3 above).
// Substitution will be replaced with actual code on later stage of the build,
// this way Closure Compiler will not mangle it (e.g. case 4. above).
// Note that if you want to run closure, and also to use Module
// after the generated code, you will need to define var Module = {};
// before the code. Then that object will be used in the code, and you
// can continue to use Module afterwards as well.
var Module = typeof Module !== 'undefined' ? Module : {};
// --pre-jses are emitted after the Module integration code, so that they can
// refer to Module (if they choose; they can also define Module)
// {{PRE_JSES}}
// Sometimes an existing Module object exists with properties
// meant to overwrite the default module functionality. Here
// we collect those properties and reapply _after_ we configure
// the current environment's defaults to avoid having to be so
// defensive during initialization.
var moduleOverrides = {};
var key;
for (key in Module) {
if (Module.hasOwnProperty(key)) {
moduleOverrides[key] = Module[key];
}
}
Module['arguments'] = [];
Module['thisProgram'] = './this.program';
Module['quit'] = function(status, toThrow) {
throw toThrow;
};
Module['preRun'] = [];
Module['postRun'] = [];
// The environment setup code below is customized to use Module.
// *** Environment setup code ***
var ENVIRONMENT_IS_WEB = false;
var ENVIRONMENT_IS_WORKER = false;
var ENVIRONMENT_IS_NODE = false;
var ENVIRONMENT_IS_SHELL = false;
// Three configurations we can be running in:
// 1) We could be the application main() thread running in the main JS UI thread. (ENVIRONMENT_IS_WORKER == false and ENVIRONMENT_IS_PTHREAD == false)
// 2) We could be the application main() thread proxied to worker. (with Emscripten -s PROXY_TO_WORKER=1) (ENVIRONMENT_IS_WORKER == true, ENVIRONMENT_IS_PTHREAD == false)
// 3) We could be an application pthread running in a worker. (ENVIRONMENT_IS_WORKER == true and ENVIRONMENT_IS_PTHREAD == true)
if (Module['ENVIRONMENT']) {
if (Module['ENVIRONMENT'] === 'WEB') {
ENVIRONMENT_IS_WEB = true;
} else if (Module['ENVIRONMENT'] === 'WORKER') {
ENVIRONMENT_IS_WORKER = true;
} else if (Module['ENVIRONMENT'] === 'NODE') {
ENVIRONMENT_IS_NODE = true;
} else if (Module['ENVIRONMENT'] === 'SHELL') {
ENVIRONMENT_IS_SHELL = true;
} else {
throw new Error('Module[\'ENVIRONMENT\'] value is not valid. must be one of: WEB|WORKER|NODE|SHELL.');
}
} else {
ENVIRONMENT_IS_WEB = typeof window === 'object';
ENVIRONMENT_IS_WORKER = typeof importScripts === 'function';
ENVIRONMENT_IS_NODE = typeof process === 'object' && "function" === 'function' && !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_WORKER;
ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;
}
if (ENVIRONMENT_IS_NODE) {
// Expose functionality in the same simple way that the shells work
// Note that we pollute the global namespace here, otherwise we break in node
var nodeFS;
var nodePath;
Module['read'] = function shell_read(filename, binary) {
var ret;
ret = tryParseAsDataURI(filename);
if (!ret) {
if (!nodeFS) nodeFS = __webpack_require__(/*! fs */ "./node_modules/node-libs-browser/mock/empty.js");
if (!nodePath) nodePath = __webpack_require__(/*! path */ "./node_modules/node-libs-browser/mock/empty.js");
filename = nodePath['normalize'](filename);
ret = nodeFS['readFileSync'](filename);
}
return binary ? ret : ret.toString();
};
Module['readBinary'] = function readBinary(filename) {
var ret = Module['read'](filename, true);
if (!ret.buffer) {
ret = new Uint8Array(ret);
}
assert(ret.buffer);
return ret;
};
if (process['argv'].length > 1) {
Module['thisProgram'] = process['argv'][1].replace(/\\/g, '/');
}
Module['arguments'] = process['argv'].slice(2);
// MODULARIZE will export the module in the proper place outside, we don't need to export here
process['on']('uncaughtException', function(ex) {
// suppress ExitStatus exceptions from showing an error
if (!(ex instanceof ExitStatus)) {
throw ex;
}
});
// Currently node will swallow unhandled rejections, but this behavior is
// deprecated, and in the future it will exit with error status.
process['on']('unhandledRejection', function(reason, p) {
Module['printErr']('node.js exiting due to unhandled promise rejection');
process['exit'](1);
});
Module['inspect'] = function () { return '[Emscripten Module object]'; };
}
else if (ENVIRONMENT_IS_SHELL) {
if (typeof read != 'undefined') {
Module['read'] = function shell_read(f) {
var data = tryParseAsDataURI(f);
if (data) {
return intArrayToString(data);
}
return read(f);
};
}
Module['readBinary'] = function readBinary(f) {
var data;
data = tryParseAsDataURI(f);
if (data) {
return data;
}
if (typeof readbuffer === 'function') {
return new Uint8Array(readbuffer(f));
}
data = read(f, 'binary');
assert(typeof data === 'object');
return data;
};
if (typeof scriptArgs != 'undefined') {
Module['arguments'] = scriptArgs;
} else if (typeof arguments != 'undefined') {
Module['arguments'] = arguments;
}
if (typeof quit === 'function') {
Module['quit'] = function(status, toThrow) {
quit(status);
}
}
}
else if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
Module['read'] = function shell_read(url) {
try {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
xhr.send(null);
return xhr.responseText;
} catch (err) {
var data = tryParseAsDataURI(url);
if (data) {
return intArrayToString(data);
}
throw err;
}
};
if (ENVIRONMENT_IS_WORKER) {
Module['readBinary'] = function readBinary(url) {
try {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, false);
xhr.responseType = 'arraybuffer';
xhr.send(null);
return new Uint8Array(xhr.response);
} catch (err) {
var data = tryParseAsDataURI(url);
if (data) {
return data;
}
throw err;
}
};
}
Module['readAsync'] = function readAsync(url, onload, onerror) {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
xhr.responseType = 'arraybuffer';
xhr.onload = function xhr_onload() {
if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
onload(xhr.response);
return;
}
var data = tryParseAsDataURI(url);
if (data) {
onload(data.buffer);
return;
}
onerror();
};
xhr.onerror = onerror;
xhr.send(null);
};
if (typeof arguments != 'undefined') {
Module['arguments'] = arguments;
}
Module['setWindowTitle'] = function(title) { document.title = title };
}
else {
// Unreachable because SHELL is dependent on the others
throw new Error('unknown runtime environment');
}
// console.log is checked first, as 'print' on the web will open a print dialogue
// printErr is preferable to console.warn (works better in shells)
Module['print'] = typeof console !== 'undefined' ? console.log : (typeof print !== 'undefined' ? print : null);
Module['printErr'] = typeof printErr !== 'undefined' ? printErr : ((typeof console !== 'undefined' && console.warn) || Module['print']);
// *** Environment setup code ***
// Closure helpers
Module.print = Module['print'];
Module.printErr = Module['printErr'];
// Merge back in the overrides
for (key in moduleOverrides) {
if (moduleOverrides.hasOwnProperty(key)) {
Module[key] = moduleOverrides[key];
}
}
// Free the object hierarchy contained in the overrides, this lets the GC
// reclaim data used e.g. in memoryInitializerRequest, which is a large typed array.
moduleOverrides = undefined;
// {{PREAMBLE_ADDITIONS}}
var STACK_ALIGN = 16;
// stack management, and other functionality that is provided by the compiled code,
// should not be used before it is ready
stackSave = stackRestore = stackAlloc = setTempRet0 = getTempRet0 = function() {
abort('cannot use the stack before compiled code is ready to run, and has provided stack access');
};
function staticAlloc(size) {
assert(!staticSealed);
var ret = STATICTOP;
STATICTOP = (STATICTOP + size + 15) & -16;
return ret;
}
function dynamicAlloc(size) {
assert(DYNAMICTOP_PTR);
var ret = HEAP32[DYNAMICTOP_PTR>>2];
var end = (ret + size + 15) & -16;
HEAP32[DYNAMICTOP_PTR>>2] = end;
if (end >= TOTAL_MEMORY) {
var success = enlargeMemory();
if (!success) {
HEAP32[DYNAMICTOP_PTR>>2] = ret;
return 0;
}
}
return ret;
}
function alignMemory(size, factor) {
if (!factor) factor = STACK_ALIGN; // stack alignment (16-byte) by default
var ret = size = Math.ceil(size / factor) * factor;
return ret;
}
function getNativeTypeSize(type) {
switch (type) {
case 'i1': case 'i8': return 1;
case 'i16': return 2;
case 'i32': return 4;
case 'i64': return 8;
case 'float': return 4;
case 'double': return 8;
default: {
if (type[type.length-1] === '*') {
return 4; // A pointer
} else if (type[0] === 'i') {
var bits = parseInt(type.substr(1));
assert(bits % 8 === 0);
return bits / 8;
} else {
return 0;
}
}
}
}
function warnOnce(text) {
if (!warnOnce.shown) warnOnce.shown = {};
if (!warnOnce.shown[text]) {
warnOnce.shown[text] = 1;
Module.printErr(text);
}
}
var functionPointers = new Array(0);
function addFunction(func) {
for (var i = 0; i < functionPointers.length; i++) {
if (!functionPointers[i]) {
functionPointers[i] = func;
return 1 + i;
}
}
throw 'Finished up all reserved function pointers. Use a higher value for RESERVED_FUNCTION_POINTERS.';
}
function removeFunction(index) {
functionPointers[index-1] = null;
}
var funcWrappers = {};
function getFuncWrapper(func, sig) {
if (!func) return; // on null pointer, return undefined
assert(sig);
if (!funcWrappers[sig]) {
funcWrappers[sig] = {};
}
var sigCache = funcWrappers[sig];
if (!sigCache[func]) {
// optimize away arguments usage in common cases
if (sig.length === 1) {
sigCache[func] = function dynCall_wrapper() {
return dynCall(sig, func);
};
} else if (sig.length === 2) {
sigCache[func] = function dynCall_wrapper(arg) {
return dynCall(sig, func, [arg]);
};
} else {
// general case
sigCache[func] = function dynCall_wrapper() {
return dynCall(sig, func, Array.prototype.slice.call(arguments));
};
}
}
return sigCache[func];
}
function makeBigInt(low, high, unsigned) {
return unsigned ? ((+((low>>>0)))+((+((high>>>0)))*4294967296.0)) : ((+((low>>>0)))+((+((high|0)))*4294967296.0));
}
function dynCall(sig, ptr, args) {
if (args && args.length) {
assert(args.length == sig.length-1);
assert(('dynCall_' + sig) in Module, 'bad function pointer type - no table for sig \'' + sig + '\'');
return Module['dynCall_' + sig].apply(null, [ptr].concat(args));
} else {
assert(sig.length == 1);
assert(('dynCall_' + sig) in Module, 'bad function pointer type - no table for sig \'' + sig + '\'');
return Module['dynCall_' + sig].call(null, ptr);
}
}
function getCompilerSetting(name) {
throw 'You must build with -s RETAIN_COMPILER_SETTINGS=1 for getCompilerSetting or emscripten_get_compiler_setting to work';
}
var Runtime = {
// FIXME backwards compatibility layer for ports. Support some Runtime.*
// for now, fix it there, then remove it from here. That way we
// can minimize any period of breakage.
dynCall: dynCall, // for SDL2 port
// helpful errors
getTempRet0: function() { abort('getTempRet0() is now a top-level function, after removing the Runtime object. Remove "Runtime."') },
staticAlloc: function() { abort('staticAlloc() is now a top-level function, after removing the Runtime object. Remove "Runtime."') },
stackAlloc: function() { abort('stackAlloc() is now a top-level function, after removing the Runtime object. Remove "Runtime."') },
};
// The address globals begin at. Very low in memory, for code size and optimization opportunities.
// Above 0 is static memory, starting with globals.
// Then the stack.
// Then 'dynamic' memory for sbrk.
var GLOBAL_BASE = 1024;
// === Preamble library stuff ===
// Documentation for the public APIs defined in this file must be updated in:
// site/source/docs/api_reference/preamble.js.rst
// A prebuilt local version of the documentation is available at:
// site/build/text/docs/api_reference/preamble.js.txt
// You can also build docs locally as HTML or other formats in site/
// An online HTML version (which may be of a different version of Emscripten)
// is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html
//========================================
// Runtime essentials
//========================================
var ABORT = 0; // whether we are quitting the application. no code should run after this. set in exit() and abort()
var EXITSTATUS = 0;
/** @type {function(*, string=)} */
function assert(condition, text) {
if (!condition) {
abort('Assertion failed: ' + text);
}
}
var globalScope = this;
// Returns the C function with a specified identifier (for C++, you need to do manual name mangling)
function getCFunc(ident) {
var func = Module['_' + ident]; // closure exported function
assert(func, 'Cannot call unknown function ' + ident + ', make sure it is exported');
return func;
}
var JSfuncs = {
// Helpers for cwrap -- it can't refer to Runtime directly because it might
// be renamed by closure, instead it calls JSfuncs['stackSave'].body to find
// out what the minified function name is.
'stackSave': function() {
stackSave()
},
'stackRestore': function() {
stackRestore()
},
// type conversion from js to c
'arrayToC' : function(arr) {
var ret = stackAlloc(arr.length);
writeArrayToMemory(arr, ret);
return ret;
},
'stringToC' : function(str) {
var ret = 0;
if (str !== null && str !== undefined && str !== 0) { // null string
// at most 4 bytes per UTF-8 code point, +1 for the trailing '\0'
var len = (str.length << 2) + 1;
ret = stackAlloc(len);
stringToUTF8(str, ret, len);
}
return ret;
}
};
// For fast lookup of conversion functions
var toC = {'string' : JSfuncs['stringToC'], 'array' : JSfuncs['arrayToC']};
// C calling interface.
function ccall (ident, returnType, argTypes, args, opts) {
var func = getCFunc(ident);
var cArgs = [];
var stack = 0;
assert(returnType !== 'array', 'Return type should not be "array".');
if (args) {
for (var i = 0; i < args.length; i++) {
var converter = toC[argTypes[i]];
if (converter) {
if (stack === 0) stack = stackSave();
cArgs[i] = converter(args[i]);
} else {
cArgs[i] = args[i];
}
}
}
var ret = func.apply(null, cArgs);
if (returnType === 'string') ret = Pointer_stringify(ret);
if (stack !== 0) {
stackRestore(stack);
}
return ret;
}
function cwrap (ident, returnType, argTypes) {
argTypes = argTypes || [];
var cfunc = getCFunc(ident);
// When the function takes numbers and returns a number, we can just return
// the original function
var numericArgs = argTypes.every(function(type){ return type === 'number'});
var numericRet = returnType !== 'string';
if (numericRet && numericArgs) {
return cfunc;
}
return function() {
return ccall(ident, returnType, argTypes, arguments);
}
}
/** @type {function(number, number, string, boolean=)} */
function setValue(ptr, value, type, noSafe) {
type = type || 'i8';
if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
switch(type) {
case 'i1': HEAP8[((ptr)>>0)]=value; break;
case 'i8': HEAP8[((ptr)>>0)]=value; break;
case 'i16': HEAP16[((ptr)>>1)]=value; break;
case 'i32': HEAP32[((ptr)>>2)]=value; break;
case 'i64': (tempI64 = [value>>>0,(tempDouble=value,(+(Math_abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math_min((+(Math_floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math_ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((ptr)>>2)]=tempI64[0],HEAP32[(((ptr)+(4))>>2)]=tempI64[1]); break;
case 'float': HEAPF32[((ptr)>>2)]=value; break;
case 'double': HEAPF64[((ptr)>>3)]=value; break;
default: abort('invalid type for setValue: ' + type);
}
}
/** @type {function(number, string, boolean=)} */
function getValue(ptr, type, noSafe) {
type = type || 'i8';
if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
switch(type) {
case 'i1': return HEAP8[((ptr)>>0)];
case 'i8': return HEAP8[((ptr)>>0)];
case 'i16': return HEAP16[((ptr)>>1)];
case 'i32': return HEAP32[((ptr)>>2)];
case 'i64': return HEAP32[((ptr)>>2)];
case 'float': return HEAPF32[((ptr)>>2)];
case 'double': return HEAPF64[((ptr)>>3)];
default: abort('invalid type for getValue: ' + type);
}
return null;
}
var ALLOC_NORMAL = 0; // Tries to use _malloc()
var ALLOC_STACK = 1; // Lives for the duration of the current function call
var ALLOC_STATIC = 2; // Cannot be freed
var ALLOC_DYNAMIC = 3; // Cannot be freed except through sbrk
var ALLOC_NONE = 4; // Do not allocate
// allocate(): This is for internal use. You can use it yourself as well, but the interface
// is a little tricky (see docs right below). The reason is that it is optimized
// for multiple syntaxes to save space in generated code. So you should
// normally not use allocate(), and instead allocate memory using _malloc(),
// initialize it with setValue(), and so forth.
// @slab: An array of data, or a number. If a number, then the size of the block to allocate,
// in *bytes* (note that this is sometimes confusing: the next parameter does not
// affect this!)
// @types: Either an array of types, one for each byte (or 0 if no type at that position),
// or a single type which is used for the entire block. This only matters if there
// is initial data - if @slab is a number, then this does not matter at all and is
// ignored.
// @allocator: How to allocate memory, see ALLOC_*
/** @type {function((TypedArray|Array<number>|number), string, number, number=)} */
function allocate(slab, types, allocator, ptr) {
var zeroinit, size;
if (typeof slab === 'number') {
zeroinit = true;
size = slab;
} else {
zeroinit = false;
size = slab.length;
}
var singleType = typeof types === 'string' ? types : null;
var ret;
if (allocator == ALLOC_NONE) {
ret = ptr;
} else {
ret = [typeof _malloc === 'function' ? _malloc : staticAlloc, stackAlloc, staticAlloc, dynamicAlloc][allocator === undefined ? ALLOC_STATIC : allocator](Math.max(size, singleType ? 1 : types.length));
}
if (zeroinit) {
var stop;
ptr = ret;
assert((ret & 3) == 0);
stop = ret + (size & ~3);
for (; ptr < stop; ptr += 4) {
HEAP32[((ptr)>>2)]=0;
}
stop = ret + size;
while (ptr < stop) {
HEAP8[((ptr++)>>0)]=0;
}
return ret;
}
if (singleType === 'i8') {
if (slab.subarray || slab.slice) {
HEAPU8.set(/** @type {!Uint8Array} */ (slab), ret);
} else {
HEAPU8.set(new Uint8Array(slab), ret);
}
return ret;
}
var i = 0, type, typeSize, previousType;
while (i < size) {
var curr = slab[i];
type = singleType || types[i];
if (type === 0) {
i++;
continue;
}
assert(type, 'Must know what type to store in allocate!');
if (type == 'i64') type = 'i32'; // special case: we have one i32 here, and one i32 later
setValue(ret+i, curr, type);
// no need to look up size unless type changes, so cache it
if (previousType !== type) {
typeSize = getNativeTypeSize(type);
previousType = type;
}
i += typeSize;
}
return ret;
}
// Allocate memory during any stage of startup - static memory early on, dynamic memory later, malloc when ready
function getMemory(size) {
if (!staticSealed) return staticAlloc(size);
if (!runtimeInitialized) return dynamicAlloc(size);
return _malloc(size);
}
/** @type {function(number, number=)} */
function Pointer_stringify(ptr, length) {
if (length === 0 || !ptr) return '';
// TODO: use TextDecoder
// Find the length, and check for UTF while doing so
var hasUtf = 0;
var t;
var i = 0;
while (1) {
assert(ptr + i < TOTAL_MEMORY);
t = HEAPU8[(((ptr)+(i))>>0)];
hasUtf |= t;
if (t == 0 && !length) break;
i++;
if (length && i == length) break;
}
if (!length) length = i;
var ret = '';
if (hasUtf < 128) {
var MAX_CHUNK = 1024; // split up into chunks, because .apply on a huge string can overflow the stack
var curr;
while (length > 0) {
curr = String.fromCharCode.apply(String, HEAPU8.subarray(ptr, ptr + Math.min(length, MAX_CHUNK)));
ret = ret ? ret + curr : curr;
ptr += MAX_CHUNK;
length -= MAX_CHUNK;
}
return ret;
}
return UTF8ToString(ptr);
}
// Given a pointer 'ptr' to a null-terminated ASCII-encoded string in the emscripten HEAP, returns
// a copy of that string as a Javascript String object.
function AsciiToString(ptr) {
var str = '';
while (1) {
var ch = HEAP8[((ptr++)>>0)];
if (!ch) return str;
str += String.fromCharCode(ch);
}
}
// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in ASCII form. The copy will require at most str.length+1 bytes of space in the HEAP.
function stringToAscii(str, outPtr) {
return writeAsciiToMemory(str, outPtr, false);
}
// Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the given array that contains uint8 values, returns
// a copy of that string as a Javascript String object.
var UTF8Decoder = typeof TextDecoder !== 'undefined' ? new TextDecoder('utf8') : undefined;
function UTF8ArrayToString(u8Array, idx) {
var endPtr = idx;
// TextDecoder needs to know the byte length in advance, it doesn't stop on null terminator by itself.
// Also, use the length info to avoid running tiny strings through TextDecoder, since .subarray() allocates garbage.
while (u8Array[endPtr]) ++endPtr;
if (endPtr - idx > 16 && u8Arra