console.cpp

来自「linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自Web」· C++ 代码 · 共 387 行

/*
 * Copyright (C) 2007 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "Console.h"

#include "ChromeClient.h"
#include "CString.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameTree.h"
#include "InspectorController.h"
#include "Page.h"
#include "PageGroup.h"
#include "PlatformString.h"

#if USE(JSC)
#include <profiler/Profiler.h>
#endif

#include "ScriptCallStack.h"
#include <stdio.h>

namespace WebCore {

Console::Console(Frame* frame)
    : m_frame(frame)
{
}

void Console::disconnectFrame()
{
    m_frame = 0;
}

static void printSourceURLAndLine(const String& sourceURL, unsigned lineNumber)
{
    if (!sourceURL.isEmpty()) {
        if (lineNumber > 0)
            printf("%s:%d: ", sourceURL.utf8().data(), lineNumber);
        else
            printf("%s: ", sourceURL.utf8().data());
    }
}

static bool getFirstArgumentAsString(const ScriptCallFrame& callFrame, String& result, bool checkForNullOrUndefined = false)
{
    if (!callFrame.argumentCount())
        return false;

    const ScriptValue& value = callFrame.argumentAt(0);
    if (checkForNullOrUndefined && (value.isNull() || value.isUndefined()))
        return false;

    return value.getString(result);
}

static void printMessageSourceAndLevelPrefix(MessageSource source, MessageLevel level)
{
    const char* sourceString;
    switch (source) {
        case HTMLMessageSource:
            sourceString = "HTML";
            break;
        case WMLMessageSource:
            sourceString = "WML";
            break;
        case XMLMessageSource:
            sourceString = "XML";
            break;
        case JSMessageSource:
            sourceString = "JS";
            break;
        case CSSMessageSource:
            sourceString = "CSS";
            break;
        case OtherMessageSource:
            sourceString = "OTHER";
            break;
        default:
            ASSERT_NOT_REACHED();
            sourceString = "UNKNOWN";
            break;
    }

    const char* levelString;
    switch (level) {
        case TipMessageLevel:
            levelString = "TIP";
            break;
        case LogMessageLevel:
            levelString = "LOG";
            break;
        case WarningMessageLevel:
            levelString = "WARN";
            break;
        case ErrorMessageLevel:
            levelString = "ERROR";
            break;
        case ObjectMessageLevel:
            levelString = "OBJECT";
            break;
        case TraceMessageLevel:
            levelString = "TRACE";
            break;
        case StartGroupMessageLevel:
            levelString = "START GROUP";
            break;
        case EndGroupMessageLevel:
            levelString = "END GROUP";
            break;
        default:
            ASSERT_NOT_REACHED();
            levelString = "UNKNOWN";
            break;
    }

    printf("%s %s:", sourceString, levelString);
}

void Console::addMessage(MessageSource source, MessageLevel level, const String& message, unsigned lineNumber, const String& sourceURL)
{
    Page* page = this->page();
    if (!page)
        return;

    if (source == JSMessageSource || source == WMLMessageSource)
        page->chrome()->client()->addMessageToConsole(message, lineNumber, sourceURL);

    page->inspectorController()->addMessageToConsole(source, level, message, lineNumber, sourceURL);

    if (!Console::shouldPrintExceptions())
        return;

    printSourceURLAndLine(sourceURL, lineNumber);
    printMessageSourceAndLevelPrefix(source, level);

    printf(" %s\n", message.utf8().data());
}

void Console::addMessage(MessageLevel level, ScriptCallStack* callStack, bool acceptNoArguments) {
    Page* page = this->page();
    if (!page)
        return;

    const ScriptCallFrame& lastCaller = callStack->at(0);

    if (!acceptNoArguments && !lastCaller.argumentCount())
        return;

    String message;
    if (getFirstArgumentAsString(lastCaller, message))
        page->chrome()->client()->addMessageToConsole(message, lastCaller.lineNumber(), lastCaller.sourceURL().prettyURL());

    page->inspectorController()->addMessageToConsole(JSMessageSource, level, callStack);

    if (!Console::shouldPrintExceptions())
        return;

    printSourceURLAndLine(lastCaller.sourceURL().prettyURL(), 0);
    printMessageSourceAndLevelPrefix(JSMessageSource, level);

    for (unsigned i = 0; i < lastCaller.argumentCount(); ++i) {
        String argAsString;
        if (lastCaller.argumentAt(i).getString(argAsString))
            printf(" %s", argAsString.utf8().data());
    }
    printf("\n");
}

void Console::debug(ScriptCallStack* callStack)
{
    // In Firebug, console.debug has the same behavior as console.log. So we'll do the same.
    log(callStack);
}

void Console::error(ScriptCallStack* callStack)
{
    addMessage(ErrorMessageLevel, callStack);
}

void Console::info(ScriptCallStack* callStack)
{
    log(callStack);
}

void Console::log(ScriptCallStack* callStack)
{
    addMessage(LogMessageLevel, callStack);
}

void Console::dir(ScriptCallStack* callStack)
{
    addMessage(ObjectMessageLevel, callStack);
}

void Console::dirxml(ScriptCallStack* callStack)
{
    // The standard behavior of our console.log will print the DOM tree for nodes.
    log(callStack);
}

void Console::trace(ScriptCallStack* callStack)
{
    addMessage(TraceMessageLevel, callStack, true);

    if (!shouldPrintExceptions())
        return;

    printf("Stack Trace\n");
    for (unsigned i = 0; i < callStack->size(); ++i) {
        String functionName = String(callStack->at(i).functionName());
        printf("\t%s\n", functionName.utf8().data());
    }
}

void Console::assertCondition(bool condition, ScriptCallStack* callStack)
{
    if (condition)
        return;

    // FIXME: <https://bugs.webkit.org/show_bug.cgi?id=19135> It would be nice to prefix assertion failures with a message like "Assertion failed: ".
    addMessage(ErrorMessageLevel, callStack, true);
}

void Console::count(ScriptCallStack* callStack)
{
    Page* page = this->page();
    if (!page)
        return;

    const ScriptCallFrame& lastCaller = callStack->at(0);
    // Follow Firebug's behavior of counting with null and undefined title in
    // the same bucket as no argument
    String title;
    getFirstArgumentAsString(lastCaller, title);

    page->inspectorController()->count(title, lastCaller.lineNumber(), lastCaller.sourceURL().string());
}

#if USE(JSC)

void Console::profile(const JSC::UString& title, ScriptCallStack* callStack)
{
    Page* page = this->page();
    if (!page)
        return;

    // FIXME: log a console message when profiling is disabled.
    if (!page->inspectorController()->profilerEnabled())
        return;

    if (title.isNull()) {   // no title so give it the next user initiated profile title.
        page->inspectorController()->startUserInitiatedProfiling(0);
        return;
    }

    JSC::Profiler::profiler()->startProfiling(callStack->state(), title);
}

void Console::profileEnd(const JSC::UString& title, ScriptCallStack* callStack)
{
    Page* page = this->page();
    if (!page)
        return;

    if (!page->inspectorController()->profilerEnabled())
        return;

    RefPtr<JSC::Profile> profile = JSC::Profiler::profiler()->stopProfiling(callStack->state(), title);
    if (!profile)
        return;

    m_profiles.append(profile);

    if (Page* page = this->page()) {
        const ScriptCallFrame& lastCaller = callStack->at(0);
        page->inspectorController()->addProfile(profile, lastCaller.lineNumber(), lastCaller.sourceURL());
    }
}

#endif
    
void Console::time(const String& title)
{
    Page* page = this->page();
    if (!page)
        return;

    // Follow Firebug's behavior of requiring a title that is not null or
    // undefined for timing functions
    if (title.isNull())
        return;
    
    page->inspectorController()->startTiming(title);
}

void Console::timeEnd(const String& title, ScriptCallStack* callStack)
{
    Page* page = this->page();
    if (!page)
        return;

    // Follow Firebug's behavior of requiring a title that is not null or
    // undefined for timing functions
    if (title.isNull())
        return;

    double elapsed;
    if (!page->inspectorController()->stopTiming(title, elapsed))
        return;

    String message = title + String::format(": %.0fms", elapsed);

    const ScriptCallFrame& lastCaller = callStack->at(0);
    page->inspectorController()->addMessageToConsole(JSMessageSource, LogMessageLevel, message, lastCaller.lineNumber(), lastCaller.sourceURL().string());
}

void Console::group(ScriptCallStack* callStack)
{
    Page* page = this->page();
    if (!page)
        return;

    page->inspectorController()->startGroup(JSMessageSource, callStack);
}

void Console::groupEnd()
{
    Page* page = this->page();
    if (!page)
        return;

    page->inspectorController()->endGroup(JSMessageSource, 0, String());
}

void Console::warn(ScriptCallStack* callStack)
{
    addMessage(WarningMessageLevel, callStack);
}

static bool printExceptions = false;

bool Console::shouldPrintExceptions()
{
    return printExceptions;
}

void Console::setShouldPrintExceptions(bool print)
{
    printExceptions = print;
}

Page* Console::page() const
{
    if (!m_frame)
        return 0;
    return m_frame->page();
}

} // namespace WebCore