abstractpythonnature.java

来自「Python Development Environment (Python I」· Java 代码 · 共 80 行

package org.python.pydev.plugin.nature;

import java.io.File;
import java.util.EmptyStackException;
import java.util.Stack;

import org.eclipse.core.resources.IResource;
import org.python.pydev.core.ICodeCompletionASTManager;
import org.python.pydev.core.IModulesManager;
import org.python.pydev.core.IPythonNature;
import org.python.pydev.core.REF;
import org.python.pydev.plugin.PydevPlugin;

public abstract class AbstractPythonNature implements IPythonNature{

    /**
     * @param resource the resource we want info on
     * @return whether the passed resource is in the pythonpath or not (it must be in a source folder for that).
     */
    public boolean isResourceInPythonpath(IResource resource) {
    	return resolveModule(resource) != null; 
    }
    
    public boolean isResourceInPythonpath(String absPath) {
    	return resolveModule(absPath) != null; 
    }

	/**
     * @param resource the resource we want to get the name from
     * @return the name of the module in the environment
     */
    public String resolveModule(IResource resource) {
    	return resolveModule(PydevPlugin.getIResourceOSString(resource));
    }
    
    public String resolveModule(File file) {
    	return resolveModule(REF.getFileAbsolutePath(file));
    }
    

    /**
     * This is a stack holding the modules manager for which the requests were done
     */
    private Stack<IModulesManager> modulesManagerStack = new Stack<IModulesManager>();
    
    /**
     * Start a request for an ast manager (start caching things)
     */
    public synchronized boolean startRequests() {
		ICodeCompletionASTManager astManager = this.getAstManager();
		if(astManager == null){
			return false;
		}
		IModulesManager modulesManager = astManager.getModulesManager();
		if(modulesManager == null){
		    return false;
		}
		synchronized (modulesManagerStack) {
		    modulesManagerStack.push(modulesManager);
		    return modulesManager.startCompletionCache();
        }
	}
	
    /**
     * End a request for an ast manager (end caching things)
     */
	public synchronized void endRequests() {
	    synchronized (modulesManagerStack) {
    	    try {
                IModulesManager modulesManager = modulesManagerStack.pop();
                modulesManager.endCompletionCache();
            } catch (EmptyStackException e) {
                PydevPlugin.log(e);
            }
	    }
	}
	    

}