source: default/trunk/de.ugoe.cs.swe.bnftools.xtools/src/resource/tools/xtools/EbnfResourceTool.java

package resource.tools.xtools;


import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature.Setting;
import org.eclipse.emf.ecore.EValidator;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.util.EObjectValidator;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.xtext.EcoreUtil2;
import org.eclipse.xtext.nodemodel.ICompositeNode;
import org.eclipse.xtext.nodemodel.util.NodeModelUtils;
import org.slf4j.LoggerFactory;

import de.ugoe.cs.swe.bnftools.EbnfStandaloneSetup;
import de.ugoe.cs.swe.bnftools.ebnf.EbnfPackage;
import de.ugoe.cs.swe.bnftools.ebnf.EtsiBnf;
import de.ugoe.cs.swe.bnftools.ebnf.Rule;
import de.ugoe.cs.swe.bnftools.ebnf.RuleReference;
import de.ugoe.cs.swe.bnftools.ebnf.impl.EbnfPackageImpl;
import resource.tools.xtools.ResourceTool;

public class EbnfResourceTool extends ResourceTool {
        
        public EbnfResourceTool(){
                super();
                log = LoggerFactory.getLogger(EbnfResourceTool.class);
                EbnfPackageImpl.init();
                initializeValidator();
                injector = new EbnfStandaloneSetup().createInjectorAndDoEMFRegistration();
        }
        
        @Override
        protected void initializeValidator(){
                super.initializeValidator();
                EObjectValidator validator = new EObjectValidator();
                EValidator.Registry.INSTANCE.put(EbnfPackage.eINSTANCE, validator);
        }

        public void processFile(File xtextFile) {

                //TODO: extract as configuration
                String extension = "bnf";
                String workspace = xtextFile.getParentFile().getAbsolutePath();
                String xTextLocation = xtextFile.getAbsolutePath();
                String outputPath = xtextFile.getAbsolutePath()+".ebnf";
                String outputPathValidated = xtextFile.getAbsolutePath()+".ebnf";
                
                Resource resource = loadResourceFromXtext(workspace,xTextLocation,true);
                findReferences(resource);
                storeResourceContents(resource.getContents(), outputPath, extension);
                Resource fromXMI = loadResourceFromXMI(outputPath, extension);
//          validateResource(fromXMI);
                storeResourceContents(fromXMI.getContents(), outputPathValidated, extension);
        }

        private void findReferences(Resource resource) {
                //custom reference finding, specific for BNF rule references 
                //could be generalized for any references at the Ecore level
                //but maybe it is fully sufficient
                EtsiBnf bnf = (EtsiBnf) resource.getContents().get(0);

                //first approach
                System.out.println("***** first approach (top down)");
                List<Rule> rules = EcoreUtil2.getAllContentsOfType(bnf, Rule.class);
                for (Rule r : rules) {
                        System.out.println("Processing rule "+r.getName());
                        for (RuleReference ref : EcoreUtil2.getAllContentsOfType(r, RuleReference.class)) {
                                EcoreUtil2.getContainerOfType(ref, Rule.class);
                                System.out.println("  " + r.getName() + " references " + ref.getRuleref().getName());
                                System.out.println("    -> reference index shall contain \"" + ref.getRuleref().getName() + " referenced in " + r.getName() + "\"");
                                
                        }
                }
                
                //second approach
                System.out.println("***** second approach (bottom up)");
                for (RuleReference ref : EcoreUtil2.getAllContentsOfType(bnf, RuleReference.class)) {
                        Rule r = EcoreUtil2.getContainerOfType(ref, Rule.class);
                        System.out.println("" + r.getName() + " references " + ref.getRuleref().getName());
                        System.out.println("  -> reference index shall contain \"" + ref.getRuleref().getName() + " referenced in " + r.getName() + "\"");
                        
                }
                
                //third approach
                System.out.println("***** third approach (cross referencing)");
                for (Rule r : rules) {
                        System.out.println("Processing rule "+r.getName());
                        for (Setting s : EcoreUtil.UsageCrossReferencer.find(r, bnf)) {
                                RuleReference ref = (RuleReference) s.getEObject();
                                Rule referencingRule = EcoreUtil2.getContainerOfType(ref, Rule.class);
                                System.out.println("" + referencingRule.getName() + " references " + r.getName());
                                System.out.println("  -> reference index shall contain \"" + r.getName() + " referenced in " + referencingRule.getName() + "\"");
                        }
                }
                

        }

        public void process(String workspace) {

                //TODO: extract as configuration
                String extension = "tplan2x";
                String xTextLocation = workspace+"/model."+extension;
                String outputPath = workspace+"/model.tplan2";
                String outputPathValidated = workspace+"/model.tplan2";
                
                Resource resource = loadResourceFromXtext(workspace,xTextLocation,true);
                storeResourceContents(resource.getContents(), outputPath, extension);
                Resource fromXMI = loadResourceFromXMI(outputPath, extension);
//          validateResource(fromXMI);
                storeResourceContents(fromXMI.getContents(), outputPathValidated, extension);
        }
        
}