rmidebuggerservice.java

freemaker安装软件

                    {
                        insertDebugBreak(t, breakpoint);
                    }
                }
            }
        }
    }

    private static void insertDebugBreak(Template t, Breakpoint breakpoint)
    {
        TemplateElement te = findTemplateElement(t.getRootTreeNode(), breakpoint.getLine());
        if(te == null)
        {
            return;
        }
        TemplateElement parent = (TemplateElement)te.getParent();
        DebugBreak db = new DebugBreak(te);
        // TODO: Ensure there always is a parent by making sure
        // that the root element in the template is always a MixedContent
        // Also make sure it doesn't conflict with anyone's code.
        parent.setChildAt(parent.getIndex(te), db);
    }

    private static TemplateElement findTemplateElement(TemplateElement te, int line)
    {
        if(te.getBeginLine() > line || te.getEndLine() < line)
        {
            return null;
        }
        // Find the narrowest match
        for(Enumeration children = te.children(); children.hasMoreElements();)
        {
            TemplateElement child = (TemplateElement)children.nextElement();
            TemplateElement childmatch = findTemplateElement(child, line);
            if(childmatch != null)
            {
                return childmatch;
            }
        }
        // If no child provides narrower match, return this
        return te;
    }
    
    private TemplateDebugInfo findTemplateDebugInfo(String templateName)
    {
        processRefQueue();
        return (TemplateDebugInfo)templateDebugInfos.get(templateName); 
    }
    
    private TemplateDebugInfo createTemplateDebugInfo(String templateName)
    {
        TemplateDebugInfo tdi = findTemplateDebugInfo(templateName);
        if(tdi == null)
        {
            tdi = new TemplateDebugInfo();
            templateDebugInfos.put(templateName, tdi);
        }
        return tdi;
    }
    
    void removeBreakpoint(Breakpoint breakpoint)
    {
        String templateName = breakpoint.getTemplateName();
        synchronized(templateDebugInfos)
        {
            TemplateDebugInfo tdi = findTemplateDebugInfo(templateName);
            if(tdi != null)
            {
                List breakpoints = tdi.breakpoints;
                int pos = Collections.binarySearch(breakpoints, breakpoint);
                if(pos >= 0)
                { 
                    breakpoints.remove(pos);
                    for (Iterator iter = tdi.templates.iterator(); iter.hasNext();)
                    {
                        TemplateReference ref = (TemplateReference) iter.next();
                        Template t = ref.getTemplate();
                        if(t == null)
                        {
                            iter.remove();
                        }
                        else
                        {
                            removeDebugBreak(t, breakpoint);
                        }
                    }
                }
                if(tdi.isEmpty())
                {
                    templateDebugInfos.remove(templateName);
                }
            }
        }
    }

    private void removeDebugBreak(Template t, Breakpoint breakpoint)
    {
        TemplateElement te = findTemplateElement(t.getRootTreeNode(), breakpoint.getLine());
        if(te == null)
        {
            return;
        }
        DebugBreak db = null;
        while(te != null)
        {
            if(te instanceof DebugBreak)
            {
                db = (DebugBreak)te;
                break;
            }
            te = (TemplateElement)te.getParent();
        }
        if(db == null)
        {
            return;
        }
        TemplateElement parent = (TemplateElement)db.getParent(); 
        parent.setChildAt(parent.getIndex(db), (TemplateElement)db.getChildAt(0));
    }
    
    void removeBreakpoints(String templateName)
    {
        synchronized(templateDebugInfos)
        {
            TemplateDebugInfo tdi = findTemplateDebugInfo(templateName);
            if(tdi != null)
            {
                removeBreakpoints(tdi);
                if(tdi.isEmpty())
                {
                    templateDebugInfos.remove(templateName);
                }
            }
        }
    }

    void removeBreakpoints()
    {
        synchronized(templateDebugInfos)
        {
            for (Iterator iter = templateDebugInfos.values().iterator(); iter.hasNext();)
            {
                TemplateDebugInfo tdi = (TemplateDebugInfo) iter.next(); 
                removeBreakpoints(tdi);
                if(tdi.isEmpty())
                {
                    iter.remove();
                }
            }
        }
    }

    private void removeBreakpoints(TemplateDebugInfo tdi)
    {
        tdi.breakpoints.clear();
        for (Iterator iter = tdi.templates.iterator(); iter.hasNext();)
        {
            TemplateReference ref = (TemplateReference) iter.next();
            Template t = ref.getTemplate();
            if(t == null)
            {
                iter.remove();
            }
            else
            {
                removeDebugBreaks(t.getRootTreeNode());
            }
        }
    }
    
    private void removeDebugBreaks(TemplateElement te)
    {
        int count = te.getChildCount();
        for(int i = 0; i < count; ++i)
        {
            TemplateElement child = (TemplateElement)te.getChildAt(i);
            while(child instanceof DebugBreak)
            {
                TemplateElement dbchild = (TemplateElement)child.getChildAt(0); 
                te.setChildAt(i, dbchild);
                child = dbchild;
            }
            removeDebugBreaks(child);
        }
    }
    
    private static final class TemplateDebugInfo
    {
        final List templates = new ArrayList();
        final List breakpoints = new ArrayList();
        
        boolean isEmpty()
        {
            return templates.isEmpty() && breakpoints.isEmpty();
        }
    }
    
    private static final class TemplateReference extends WeakReference
    {
        final String templateName;
         
        TemplateReference(String templateName, Template template, ReferenceQueue queue)
        {
            super(template, queue);
            this.templateName = templateName;
        }
        
        Template getTemplate()
        {
            return (Template)get();
        }
    }
    
    private void processRefQueue()
    {
        for(;;)
        {
            TemplateReference ref = (TemplateReference)refQueue.poll();
            if(ref == null)
            {
                break;
            }
            TemplateDebugInfo tdi = findTemplateDebugInfo(ref.templateName);
            if(tdi != null)
            {
                tdi.templates.remove(ref);
                if(tdi.isEmpty())
                {
                    templateDebugInfos.remove(ref.templateName);
                }
            }
        }
    }
}