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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 "use strict";
      6 
      7 var installedClasses = {};
      8 var PrivateScriptDOMException = {};
      9 var PrivateScriptJSError = {};
     10 
     11 // Private scripts can throw JS errors and DOM exceptions as follows:
     12 //     throwException(PrivateScriptDOMException.IndexSizeError, "...");
     13 //     throwException(PrivateScriptJSError.TypeError, "...");
     14 //
     15 // Note that normal JS errors thrown by private scripts are treated
     16 // as real JS errors caused by programming mistake and the execution crashes.
     17 // If you want to intentially throw JS errors from private scripts,
     18 // you need to use throwException(PrivateScriptJSError.TypeError, "...").
     19 function throwException(code, message)
     20 {
     21     function PrivateScriptException()
     22     {
     23     }
     24 
     25     var exception = new PrivateScriptException();
     26     exception.code = code;
     27     exception.message = message;
     28     exception.name = "PrivateScriptException";
     29     throw exception;
     30 }
     31 
     32 function installClass(className, implementation)
     33 {
     34     function PrivateScriptClass()
     35     {
     36     }
     37 
     38     if (!(className in installedClasses))
     39         installedClasses[className] = new PrivateScriptClass();
     40     implementation(installedClasses[className]);
     41 }
     42 
     43 (function (global) {
     44     // This list must be in sync with the enum in ExceptionCode.h. The order matters.
     45     var domExceptions = [
     46         "IndexSizeError",
     47         "HierarchyRequestError",
     48         "WrongDocumentError",
     49         "InvalidCharacterError",
     50         "NoModificationAllowedError",
     51         "NotFoundError",
     52         "NotSupportedError",
     53         "InUseAttributeError", // Historical. Only used in setAttributeNode etc which have been removed from the DOM specs.
     54 
     55         // Introduced in DOM Level 2:
     56         "InvalidStateError",
     57         "SyntaxError",
     58         "InvalidModificationError",
     59         "NamespaceError",
     60         "InvalidAccessError",
     61 
     62         // Introduced in DOM Level 3:
     63         "TypeMismatchError", // Historical; use TypeError instead
     64 
     65         // XMLHttpRequest extension:
     66         "SecurityError",
     67 
     68         // Others introduced in HTML5:
     69         "NetworkError",
     70         "AbortError",
     71         "URLMismatchError",
     72         "QuotaExceededError",
     73         "TimeoutError",
     74         "InvalidNodeTypeError",
     75         "DataCloneError",
     76 
     77         // These are IDB-specific.
     78         "UnknownError",
     79         "ConstraintError",
     80         "DataError",
     81         "TransactionInactiveError",
     82         "ReadOnlyError",
     83         "VersionError",
     84 
     85         // File system
     86         "NotReadableError",
     87         "EncodingError",
     88         "PathExistsError",
     89 
     90         // SQL
     91         "SQLDatabaseError", // Naming conflict with DatabaseError class.
     92 
     93         // Web Crypto
     94         "OperationError",
     95     ];
     96 
     97     // This list must be in sync with the enum in ExceptionCode.h. The order matters.
     98     var jsErrors = [
     99         "Error",
    100         "TypeError",
    101         "RangeError",
    102         "SyntaxError",
    103         "ReferenceError",
    104     ];
    105 
    106     var code = 1;
    107     domExceptions.forEach(function (exception) {
    108         global.PrivateScriptDOMException[exception] = code;
    109         ++code;
    110     });
    111 
    112     var code = 1000;
    113     jsErrors.forEach(function (exception) {
    114         global.PrivateScriptJSError[exception] = code;
    115         ++code;
    116     });
    117 
    118 })(window);
    119 
    120 // This line must be the last statement of this JS file.
    121 // A parenthesis is needed, because the caller of this script (PrivateScriptRunner.cpp)
    122 // is depending on the completion value of this script.
    123 (installedClasses);
    124