/*

 * Copyright (C) 2008 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.

 */

#import "WebScriptDebugger.h"

#import "WebDelegateImplementationCaching.h"

#import "WebFrameInternal.h"

#import "WebScriptDebugDelegate.h"

#import "WebViewInternal.h"

#import <JavaScriptCore/DebuggerCallFrame.h>

#import <JavaScriptCore/JSGlobalObject.h>

#import <JavaScriptCore/SourceCode.h>

#import <WebCore/DOMWindow.h>

#import <WebCore/Frame.h>

#import <WebCore/JSDOMWindow.h>

#import <WebCore/KURL.h>

#import <WebCore/ScriptController.h>

using namespace JSC;

using namespace WebCore;

@interface WebScriptCallFrame (WebScriptDebugDelegateInternal)

- (WebScriptCallFrame *)_initWithGlobalObject:(WebScriptObject *)globalObj debugger:(WebScriptDebugger *)debugger caller:(WebScriptCallFrame *)caller debuggerCallFrame:(const DebuggerCallFrame&)debuggerCallFrame;

- (void)_setDebuggerCallFrame:(const DebuggerCallFrame&)debuggerCallFrame;

- (void)_clearDebuggerCallFrame;

@end

NSString *toNSString(const UString& s)

{

    if (s.isEmpty())

        return nil;

    return [NSString stringWithCharacters:reinterpret_cast<const unichar*>(s.data()) length:s.size()];

}

static NSString *toNSString(const SourceCode& s)

{

    if (!s.length())

        return nil;

    return [NSString stringWithCharacters:reinterpret_cast<const unichar*>(s.data()) length:s.length()];

}

// convert UString to NSURL

static NSURL *toNSURL(const UString& s)

{

    if (s.isEmpty())

        return nil;

    return KURL(ParsedURLString, ustringToString(s));

}

static WebFrame *toWebFrame(JSGlobalObject* globalObject)

{

    JSDOMWindow* window = static_cast<JSDOMWindow*>(globalObject);

    return kit(window->impl()->frame());

}

WebScriptDebugger::WebScriptDebugger(JSGlobalObject* globalObject)

    : m_callingDelegate(false)

    , m_globalObject(globalObject)

{

    attach(globalObject);

    initGlobalCallFrame(globalObject->globalExec());

}

void WebScriptDebugger::initGlobalCallFrame(const DebuggerCallFrame& debuggerCallFrame)

{

    m_callingDelegate = true;

    WebFrame *webFrame = toWebFrame(debuggerCallFrame.dynamicGlobalObject());

    m_topCallFrame.adoptNS([[WebScriptCallFrame alloc] _initWithGlobalObject:core(webFrame)->script()->windowScriptObject() debugger:this caller:m_topCallFrame.get() debuggerCallFrame:debuggerCallFrame]);

    m_globalCallFrame = m_topCallFrame;

    WebView *webView = [webFrame webView];

    WebScriptDebugDelegateImplementationCache* implementations = WebViewGetScriptDebugDelegateImplementations(webView);

    if (implementations->didEnterCallFrameFunc)

        CallScriptDebugDelegate(implementations->didEnterCallFrameFunc, webView, @selector(webView:didEnterCallFrame:sourceId:line:forWebFrame:), m_topCallFrame.get(), static_cast<NSInteger>(0), -1, webFrame);

    m_callingDelegate = false;

}

// callbacks - relay to delegate

void WebScriptDebugger::sourceParsed(ExecState* exec, const SourceCode& source, int errorLine, const UString& errorMsg)

{

    if (m_callingDelegate)

        return;

    m_callingDelegate = true;

    NSString *nsSource = toNSString(source);

    NSURL *nsURL = toNSURL(source.provider()->url());

    WebFrame *webFrame = toWebFrame(exec->dynamicGlobalObject());

    WebView *webView = [webFrame webView];

    WebScriptDebugDelegateImplementationCache* implementations = WebViewGetScriptDebugDelegateImplementations(webView);

    if (errorLine == -1) {

        if (implementations->didParseSourceFunc) {

            if (implementations->didParseSourceExpectsBaseLineNumber)

                CallScriptDebugDelegate(implementations->didParseSourceFunc, webView, @selector(webView:didParseSource:baseLineNumber:fromURL:sourceId:forWebFrame:), nsSource, source.firstLine(), nsURL, source.provider()->asID(), webFrame);

            else

                CallScriptDebugDelegate(implementations->didParseSourceFunc, webView, @selector(webView:didParseSource:fromURL:sourceId:forWebFrame:), nsSource, [nsURL absoluteString], source.provider()->asID(), webFrame);

        }

    } else {

        NSString* nsErrorMessage = toNSString(errorMsg);

        NSDictionary *info = [[NSDictionary alloc] initWithObjectsAndKeys:nsErrorMessage, WebScriptErrorDescriptionKey, [NSNumber numberWithUnsignedInt:errorLine], WebScriptErrorLineNumberKey, nil];

        NSError *error = [[NSError alloc] initWithDomain:WebScriptErrorDomain code:WebScriptGeneralErrorCode userInfo:info];

        if (implementations->failedToParseSourceFunc)

            CallScriptDebugDelegate(implementations->failedToParseSourceFunc, webView, @selector(webView:failedToParseSource:baseLineNumber:fromURL:withError:forWebFrame:), nsSource, source.firstLine(), nsURL, error, webFrame);

        [error release];

        [info release];

    }

    m_callingDelegate = false;

}

void WebScriptDebugger::callEvent(const DebuggerCallFrame& debuggerCallFrame, intptr_t sourceID, int lineNumber)

{

    if (m_callingDelegate)

        return;

    m_callingDelegate = true;

    WebFrame *webFrame = toWebFrame(debuggerCallFrame.dynamicGlobalObject());

    m_topCallFrame.adoptNS([[WebScriptCallFrame alloc] _initWithGlobalObject:core(webFrame)->script()->windowScriptObject() debugger:this caller:m_topCallFrame.get() debuggerCallFrame:debuggerCallFrame]);

    WebView *webView = [webFrame webView];

    WebScriptDebugDelegateImplementationCache* implementations = WebViewGetScriptDebugDelegateImplementations(webView);

    if (implementations->didEnterCallFrameFunc)

        CallScriptDebugDelegate(implementations->didEnterCallFrameFunc, webView, @selector(webView:didEnterCallFrame:sourceId:line:forWebFrame:), m_topCallFrame.get(), sourceID, lineNumber, webFrame);

    m_callingDelegate = false;

}

void WebScriptDebugger::atStatement(const DebuggerCallFrame& debuggerCallFrame, intptr_t sourceID, int lineNumber)

{

    if (m_callingDelegate)

        return;

    m_callingDelegate = true;

    WebFrame *webFrame = toWebFrame(debuggerCallFrame.dynamicGlobalObject());

    WebView *webView = [webFrame webView];

    [m_topCallFrame.get() _setDebuggerCallFrame:debuggerCallFrame];

    WebScriptDebugDelegateImplementationCache* implementations = WebViewGetScriptDebugDelegateImplementations(webView);

    if (implementations->willExecuteStatementFunc)

        CallScriptDebugDelegate(implementations->willExecuteStatementFunc, webView, @selector(webView:willExecuteStatement:sourceId:line:forWebFrame:), m_topCallFrame.get(), sourceID, lineNumber, webFrame);

    m_callingDelegate = false;

}

void WebScriptDebugger::returnEvent(const DebuggerCallFrame& debuggerCallFrame, intptr_t sourceID, int lineNumber)

{

    if (m_callingDelegate)

        return;

    m_callingDelegate = true;

    WebFrame *webFrame = toWebFrame(debuggerCallFrame.dynamicGlobalObject());

    WebView *webView = [webFrame webView];

    [m_topCallFrame.get() _setDebuggerCallFrame:debuggerCallFrame];

    WebScriptDebugDelegateImplementationCache* implementations = WebViewGetScriptDebugDelegateImplementations(webView);

    if (implementations->willLeaveCallFrameFunc)

        CallScriptDebugDelegate(implementations->willLeaveCallFrameFunc, webView, @selector(webView:willLeaveCallFrame:sourceId:line:forWebFrame:), m_topCallFrame.get(), sourceID, lineNumber, webFrame);

    [m_topCallFrame.get() _clearDebuggerCallFrame];

    m_topCallFrame = [m_topCallFrame.get() caller];

    m_callingDelegate = false;

}

void WebScriptDebugger::exception(const DebuggerCallFrame& debuggerCallFrame, intptr_t sourceID, int lineNumber, bool hasHandler)

{

    if (m_callingDelegate)

        return;

    m_callingDelegate = true;

    WebFrame *webFrame = toWebFrame(debuggerCallFrame.dynamicGlobalObject());

    WebView *webView = [webFrame webView];

    [m_topCallFrame.get() _setDebuggerCallFrame:debuggerCallFrame];

    WebScriptDebugDelegateImplementationCache* implementations = WebViewGetScriptDebugDelegateImplementations(webView);

    if (implementations->exceptionWasRaisedFunc)

        CallScriptDebugDelegate(implementations->exceptionWasRaisedFunc, webView, @selector(webView:exceptionWasRaised:sourceId:line:forWebFrame:), m_topCallFrame.get(), sourceID, lineNumber, webFrame);

    m_callingDelegate = false;

}

void WebScriptDebugger::willExecuteProgram(const DebuggerCallFrame& debuggerCallFrame, intptr_t sourceID, int lineno)

{

}

void WebScriptDebugger::didExecuteProgram(const DebuggerCallFrame& debuggerCallFrame, intptr_t sourceID, int lineno)

{

}

void WebScriptDebugger::didReachBreakpoint(const DebuggerCallFrame&, intptr_t, int)

{

    return;

}