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runtime_debug.js
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57 lines (54 loc) · 1.82 KB
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/**
* @license
* Copyright 2020 The Emscripten Authors
* SPDX-License-Identifier: MIT
*/
#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 == 'object') {
printObjectList.push(arg);
return '<' + arg + '|' + (printObjectList.length-1) + '>';
}
if (typeof arg == 'number') {
if (arg > 0) return '0x' + arg.toString(16) + ' (' + arg + ')';
}
return arg;
}
#endif