src/third_party/blink/Source/bindings/modules/v8/custom/V8CustomSQLStatementErrorCallback.cpp

/*
 * Copyright (c) 2009, 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "config.h"

#include "bindings/core/v8/ScriptController.h"
#include "bindings/modules/v8/V8SQLError.h"
#include "bindings/modules/v8/V8SQLStatementErrorCallback.h"
#include "bindings/modules/v8/V8SQLTransaction.h"
#include "core/dom/ExecutionContext.h"
#include "wtf/Assertions.h"

namespace blink {

bool V8SQLStatementErrorCallback::handleEvent(SQLTransaction* transaction, SQLError* error)
{
    if (!canInvokeCallback())
        return true;

    v8::Isolate* isolate = m_scriptState->isolate();
    if (!m_scriptState->contextIsValid())
        return true;

    ScriptState::Scope scope(m_scriptState.get());

    v8::Local<v8::Value> transactionHandle = toV8(transaction, m_scriptState->context()->Global(), isolate);
    v8::Local<v8::Value> errorHandle = toV8(error, m_scriptState->context()->Global(), isolate);
    if (transactionHandle.IsEmpty() || errorHandle.IsEmpty()) {
        if (!isScriptControllerTerminating())
            CRASH();
        return true;
    }

    ASSERT(transactionHandle->IsObject());

    v8::Local<v8::Value> argv[] = {
        transactionHandle,
        errorHandle
    };

    v8::TryCatch exceptionCatcher;
    exceptionCatcher.SetVerbose(true);

    v8::Local<v8::Value> result = ScriptController::callFunction(executionContext(), m_callback.newLocal(isolate), m_scriptState->context()->Global(), WTF_ARRAY_LENGTH(argv), argv, isolate);

    // FIXME: This comment doesn't make much sense given what the code is actually doing.
    //
    // Step 6: If the error callback returns false, then move on to the next
    // statement, if any, or onto the next overall step otherwise. Otherwise,
    // the error callback did not return false, or there was no error callback.
    // Jump to the last step in the overall steps.
    return exceptionCatcher.HasCaught() || (!result.IsEmpty() && result->BooleanValue());
}

} // namespace blink