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runtime_debug.js
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102 lines (94 loc) · 3.24 KB
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/**
* @license
* Copyright 2020 The Emscripten Authors
* SPDX-License-Identifier: MIT
*/
#if ASSERTIONS
function legacyModuleProp(prop, newName) {
if (!Object.getOwnPropertyDescriptor(Module, prop)) {
Object.defineProperty(Module, prop, {
configurable: true,
get: function() {
abort('Module.' + prop + ' has been replaced with plain ' + newName + ' (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)');
}
});
}
}
function ignoredModuleProp(prop) {
if (Object.getOwnPropertyDescriptor(Module, prop)) {
abort('`Module.' + prop + '` was supplied but `' + prop + '` not included in INCOMING_MODULE_JS_API');
}
}
function unexportedMessage(sym, isFSSybol) {
var msg = "'" + sym + "' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)";
if (isFSSybol) {
msg += '. Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you';
}
return msg;
}
function unexportedRuntimeSymbol(sym, isFSSybol) {
if (!Object.getOwnPropertyDescriptor(Module, sym)) {
Object.defineProperty(Module, sym, {
configurable: true,
get: function() {
abort(unexportedMessage(sym, isFSSybol));
}
});
}
}
function unexportedRuntimeFunction(sym, isFSSybol) {
if (!Object.getOwnPropertyDescriptor(Module, sym)) {
Module[sym] = () => abort(unexportedMessage(sym, isFSSybol));
}
}
#endif
#if RUNTIME_DEBUG
var runtimeDebug = true; // Switch to false at runtime to disable logging at the right times
var printObjectList = [];
function prettyPrint(arg) {
if (typeof arg == 'undefined') return '!UNDEFINED!';
if (typeof arg == 'boolean') arg = arg + 0;
if (!arg) return arg;
var index = printObjectList.indexOf(arg);
if (index >= 0) return '<' + arg + '|' + index + '>';
if (arg.toString() == '[object HTMLImageElement]') {
return arg + '\n\n';
}
if (arg.byteLength) {
return '{' + Array.prototype.slice.call(arg, 0, Math.min(arg.length, 400)) + '}'; // Useful for correct arrays, less so for compiled arrays, see the code below for that
var buf = new ArrayBuffer(32);
var i8buf = new Int8Array(buf);
var i16buf = new Int16Array(buf);
var f32buf = new Float32Array(buf);
switch (arg.toString()) {
case '[object Uint8Array]':
i8buf.set(arg.subarray(0, 32));
break;
case '[object Float32Array]':
f32buf.set(arg.subarray(0, 5));
break;
case '[object Uint16Array]':
i16buf.set(arg.subarray(0, 16));
break;
default:
alert('unknown array for debugging: ' + arg);
throw 'see alert';
}
var ret = '{' + arg.byteLength + ':\n';
var arr = Array.prototype.slice.call(i8buf);
ret += 'i8:' + arr.toString().replace(/,/g, ',') + '\n';
arr = Array.prototype.slice.call(f32buf, 0, 8);
ret += 'f32:' + arr.toString().replace(/,/g, ',') + '}';
return ret;
}
if (typeof arg == 'function') {
return '<function>';
} else if (typeof arg == 'object') {
printObjectList.push(arg);
return '<' + arg + '|' + (printObjectList.length-1) + '>';
} else if (typeof arg == 'number') {
if (arg > 0) return '0x' + arg.toString(16) + ' (' + arg + ')';
}
return arg;
}
#endif