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      1 /*
      2  * Copyright (c) 2009, 2012 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 
     33 #include "bindings/core/v8/ScriptController.h"
     34 #include "bindings/modules/v8/V8SQLError.h"
     35 #include "bindings/modules/v8/V8SQLStatementErrorCallback.h"
     36 #include "bindings/modules/v8/V8SQLTransaction.h"
     37 #include "core/dom/ExecutionContext.h"
     38 #include "wtf/Assertions.h"
     39 
     40 namespace blink {
     41 
     42 bool V8SQLStatementErrorCallback::handleEvent(SQLTransaction* transaction, SQLError* error)
     43 {
     44     if (!canInvokeCallback())
     45         return true;
     46 
     47     v8::Isolate* isolate = m_scriptState->isolate();
     48     if (m_scriptState->contextIsValid())
     49         return true;
     50 
     51     ScriptState::Scope scope(m_scriptState.get());
     52 
     53     v8::Handle<v8::Value> transactionHandle = toV8(transaction, m_scriptState->context()->Global(), isolate);
     54     v8::Handle<v8::Value> errorHandle = toV8(error, m_scriptState->context()->Global(), isolate);
     55     if (transactionHandle.IsEmpty() || errorHandle.IsEmpty()) {
     56         if (!isScriptControllerTerminating())
     57             CRASH();
     58         return true;
     59     }
     60 
     61     ASSERT(transactionHandle->IsObject());
     62 
     63     v8::Handle<v8::Value> argv[] = {
     64         transactionHandle,
     65         errorHandle
     66     };
     67 
     68     v8::TryCatch exceptionCatcher;
     69     exceptionCatcher.SetVerbose(true);
     70 
     71     v8::Handle<v8::Value> result = ScriptController::callFunction(executionContext(), m_callback.newLocal(isolate), m_scriptState->context()->Global(), WTF_ARRAY_LENGTH(argv), argv, isolate);
     72 
     73     // FIXME: This comment doesn't make much sense given what the code is actually doing.
     74     //
     75     // Step 6: If the error callback returns false, then move on to the next
     76     // statement, if any, or onto the next overall step otherwise. Otherwise,
     77     // the error callback did not return false, or there was no error callback.
     78     // Jump to the last step in the overall steps.
     79     return exceptionCatcher.HasCaught() || (!result.IsEmpty() && result->BooleanValue());
     80 }
     81 
     82 } // namespace blink
     83