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      1 /*
      2  * Copyright (C) 2011 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "core/dom/DOMException.h"
     31 
     32 #include "ExceptionCode.h"
     33 
     34 namespace WebCore {
     35 
     36 static struct CoreException {
     37     const char* const name;
     38     const char* const message;
     39     const int code;
     40 } coreExceptions[] = {
     41     { "IndexSizeError", "Index or size was negative, or greater than the allowed value.", 1 },
     42     { "HierarchyRequestError", "A Node was inserted somewhere it doesn't belong.", 3 },
     43     { "WrongDocumentError", "A Node was used in a different document than the one that created it (that doesn't support it).", 4 },
     44     { "InvalidCharacterError", "The string contains invalid characters.", 5 },
     45     { "NoModificationAllowedError", "An attempt was made to modify an object where modifications are not allowed.", 7 },
     46     { "NotFoundError", "An attempt was made to reference a Node in a context where it does not exist.", 8 },
     47     { "NotSupportedError", "The implementation did not support the requested type of object or operation.", 9 },
     48     { "InUseAttributeError", "An attempt was made to add an attribute that is already in use elsewhere.", 10 },
     49     { "InvalidStateError", "An attempt was made to use an object that is not, or is no longer, usable.", 11 },
     50     { "SyntaxError", "An invalid or illegal string was specified.", 12 },
     51     { "InvalidModificationError", "The object can not be modified in this way.", 13 },
     52     { "NamespaceError", "An attempt was made to create or change an object in a way which is incorrect with regard to namespaces.", 14 },
     53     { "InvalidAccessError", "A parameter or an operation was not supported by the underlying object.", 15 },
     54     { "TypeMismatchError", "The type of an object was incompatible with the expected type of the parameter associated to the object.", 17 },
     55     { "SecurityError", "An attempt was made to break through the security policy of the user agent.", 18 },
     56     { "NetworkError", "A network error occurred.", 19 },
     57     { "AbortError", "The user aborted a request.", 20 },
     58     { "URLMismatchError", "A worker global scope represented an absolute URL that is not equal to the resulting absolute URL.", 21 },
     59     { "QuotaExceededError", "An attempt was made to add something to storage that exceeded the quota.", 22 },
     60     { "TimeoutError", "A timeout occurred.", 23 },
     61     { "InvalidNodeTypeError", "The supplied node is invalid or has an invalid ancestor for this operation.", 24 },
     62     { "DataCloneError", "An object could not be cloned.", 25 },
     63 
     64     // Indexed DB
     65     { "UnknownError", "An unknown error occurred within Indexed Database.", 0 },
     66     { "ConstraintError", "A mutation operation in the transaction failed because a constraint was not satisfied.", 0 },
     67     { "DataError", "The data provided does not meet requirements.", 0 },
     68     { "TransactionInactiveError", "A request was placed against a transaction which is either currently not active, or which is finished.", 0 },
     69     { "ReadOnlyError", "A write operation was attempted in a read-only transaction.", 0 },
     70     { "VersionError", "An attempt was made to open a database using a lower version than the existing version.", 0 },
     71 
     72     // File system
     73     { "NotReadableError", "The requested file could not be read, typically due to permission problems that have occurred after a reference to a file was acquired.", 0 },
     74     { "EncodingError", "A URI supplied to the API was malformed, or the resulting Data URL has exceeded the URL length limitations for Data URLs.", 0 },
     75     { "PathExistsError", "An attempt was made to create a file or directory where an element already exists.", 0 },
     76 
     77     // SQL
     78     { "DatabaseError", "The operation failed for some reason related to the database.", 0 },
     79 };
     80 
     81 static const CoreException* getErrorEntry(ExceptionCode ec)
     82 {
     83     size_t tableSize = WTF_ARRAY_LENGTH(coreExceptions);
     84     size_t tableIndex = ec - IndexSizeError;
     85 
     86     return tableIndex < tableSize ? &coreExceptions[tableIndex] : 0;
     87 }
     88 
     89 DOMException::DOMException(unsigned short code, const String& name, const String& message)
     90 {
     91     ASSERT(name);
     92     m_code = code;
     93     m_name = name;
     94     m_message = message;
     95     ScriptWrappable::init(this);
     96 }
     97 
     98 PassRefPtr<DOMException> DOMException::create(ExceptionCode ec, const String& message)
     99 {
    100     const CoreException* entry = getErrorEntry(ec);
    101     ASSERT(entry);
    102     return adoptRef(new DOMException(entry->code,
    103         entry->name ? entry->name : "Error",
    104         message.isNull() ? String(entry->message) : message));
    105 }
    106 
    107 String DOMException::toString() const
    108 {
    109     return name() + ": " + message();
    110 }
    111 
    112 String DOMException::getErrorName(ExceptionCode ec)
    113 {
    114     const CoreException* entry = getErrorEntry(ec);
    115     ASSERT(entry);
    116     if (!entry)
    117         return "UnknownError";
    118 
    119     return entry->name;
    120 }
    121 
    122 String DOMException::getErrorMessage(ExceptionCode ec)
    123 {
    124     const CoreException* entry = getErrorEntry(ec);
    125     ASSERT(entry);
    126     if (!entry)
    127         return "Unknown error.";
    128 
    129     return entry->message;
    130 }
    131 
    132 unsigned short DOMException::getLegacyErrorCode(ExceptionCode ec)
    133 {
    134     const CoreException* entry = getErrorEntry(ec);
    135     ASSERT(entry);
    136 
    137     return (entry && entry->code) ? entry->code : 0;
    138 }
    139 
    140 } // namespace WebCore
    141