DXR will be turned off on Tuesday, December 29th. It will redirect to Searchfox.
See the announcement on Discourse.

DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (c68fe15a81fc)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";
"use strict";

var EXPORTED_SYMBOLS = ["pprint", "truncate"];

const { Log } = ChromeUtils.import("chrome://remote/content/Log.jsm");


const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
const { XPCOMUtils } = ChromeUtils.import(
  "resource://gre/modules/XPCOMUtils.jsm"
);


XPCOMUtils.defineLazyGetter(this, "log", Log.get);

const ELEMENT_NODE = 1;
const ELEMENT_NODE = 1;
const MAX_STRING_LENGTH = 250;
const PREF_TRUNCATE = "remote.log.truncate";

/**
 * Pretty-print values passed to template strings.
 * Pretty-print values passed to template strings.
 *
 * Usage::
 *
 *     let bool = {value: true};
 *     pprint`Expected boolean, got ${bool}`;
 *     pprint`Expected boolean, got ${bool}`;
 *     => 'Expected boolean, got [object Object] {"value": true}'
 *
 *     let htmlElement = document.querySelector("input#foo");
 *     pprint`Expected element ${htmlElement}`;
 *     pprint`Expected element ${htmlElement}`;
 *     => 'Expected element <input id="foo" class="bar baz" type="input">'
 *
 *     pprint`Current window: ${window}`;
 *     => '[object Window https://www.mozilla.org/]'
 */
 */
function pprint(ss, ...values) {
  function pretty(val) {
    let proto = Object.prototype.toString.call(val);
    if (
      typeof val == "object" &&
      typeof val == "object" &&
      val !== null &&
      "nodeType" in val &&
      val.nodeType === ELEMENT_NODE
    ) {
      return prettyElement(val);
      return prettyElement(val);
    } else if (["[object Window]", "[object ChromeWindow]"].includes(proto)) {
      return prettyWindowGlobal(val);
    } else if (proto == "[object Attr]") {
    } else if (proto == "[object Attr]") {
      return prettyAttr(val);
    }
    return prettyObject(val);
  }


  function prettyElement(el) {
    let attrs = ["id", "class", "href", "name", "src", "type"];

    let idents = "";
    for (let attr of attrs) {
    for (let attr of attrs) {
      if (el.hasAttribute(attr)) {
      if (el.hasAttribute(attr)) {
        idents += ` ${attr}="${el.getAttribute(attr)}"`;
      }
    }

    return `<${el.localName}${idents}>`;
  }


  function prettyWindowGlobal(win) {
    let proto = Object.prototype.toString.call(win);
    return `[${proto.substring(1, proto.length - 1)} ${win.location}]`;
  }


  function prettyAttr(obj) {
    return `[object Attr ${obj.name}="${obj.value}"]`;
  }

  function prettyObject(obj) {
  function prettyObject(obj) {
    let proto = Object.prototype.toString.call(obj);
    let s = "";
    try {
      s = JSON.stringify(obj);
    } catch (e) {
    } catch (e) {
      if (e instanceof TypeError) {
        s = `<${e.message}>`;
      } else {
        throw e;
      }
    }
    }
    return `${proto} ${s}`;
  }

  let res = [];
  for (let i = 0; i < ss.length; i++) {
  for (let i = 0; i < ss.length; i++) {
    res.push(ss[i]);
    if (i < values.length) {
      let s;
      try {
        s = pretty(values[i]);
        s = pretty(values[i]);
      } catch (e) {
        log.warn("Problem pretty printing:", e);
        s = typeof values[i];
        s = typeof values[i];
      }
      res.push(s);
    }
  }
  return res.join("");
  return res.join("");
}

/**
/**
 * Template literal that truncates string values in arbitrary objects.
 * Template literal that truncates string values in arbitrary objects.
 *
 * Given any object, the template will walk the object and truncate
 * any strings it comes across to a reasonable limit.  This is suitable
 * any strings it comes across to a reasonable limit.  This is suitable
 * when you have arbitrary data and data integrity is not important.
 *
 * The strings are truncated in the middle so that the beginning and
 * the end is preserved.  This will make a long, truncated string look
 * like "X <...> Y", where X and Y are half the number of characters
 * of the maximum string length from either side of the string.
 * of the maximum string length from either side of the string.
 *
 *
 * Usage::
 *
 *     truncate`Hello ${"x".repeat(260)}!`;
 *     truncate`Hello ${"x".repeat(260)}!`;
 *     // Hello xxx ... xxx!
 *
 * Functions named `toJSON` or `toString` on objects will be called.
 */
function truncate(strings, ...values) {
function truncate(strings, ...values) {
  const truncateLog = Services.prefs.getBoolPref(PREF_TRUNCATE, false);
  function walk(obj) {
    const typ = Object.prototype.toString.call(obj);

    switch (typ) {
    switch (typ) {
      case "[object Undefined]":
      case "[object Null]":
      case "[object Boolean]":
      case "[object Number]":
        return obj;
        return obj;

      case "[object String]":
        if (truncateLog && obj.length > MAX_STRING_LENGTH) {
          let s1 = obj.substring(0, MAX_STRING_LENGTH / 2);
          let s2 = obj.substring(obj.length - MAX_STRING_LENGTH / 2);
          let s2 = obj.substring(obj.length - MAX_STRING_LENGTH / 2);
          return `${s1} ... ${s2}`;
        }
        return obj;
        return obj;

      case "[object Array]":
        return obj.map(walk);

      // arbitrary object
      // arbitrary object
      default:
        if (
          Object.getOwnPropertyNames(obj).includes("toString") &&
          typeof obj.toString == "function"
        ) {
          return walk(obj.toString());
        }
        }

        let rv = {};
        for (let prop in obj) {
          rv[prop] = walk(obj[prop]);
          rv[prop] = walk(obj[prop]);
        }
        return rv;
    }
  }


  let res = [];
  for (let i = 0; i < strings.length; ++i) {
    res.push(strings[i]);
    if (i < values.length) {
      let obj = walk(values[i]);
      let t = Object.prototype.toString.call(obj);
      if (t == "[object Array]" || t == "[object Object]") {
        res.push(JSON.stringify(obj));
      } else {
      } else {
        res.push(obj);
      }
    }
  }
  return res.join("");
  return res.join("");
}