2012-11-29 2 views
2

xtext를 사용하여 dsl을 빌드하고, 팝업 액션을 추가했습니다. 이제는 액션이 ​​AST를로드하고 변환하려고 할 때 필요합니다. 사용하려고했습니다. 다음 COE 루트 AST 요소xtext 루트 AST 요소를 얻는 방법

/*Environment configuration*/ 
StandaloneSetup standalone = new StandaloneSetup(); 
standalone.setPlatformUri(workingPath); 
Injector injector = new MyDslStandaloneSetup().createInjectorAndDoEMFRegistration(); 
XtextResourceSet resourceSet = injector.getInstance(XtextResourceSet.class); 
resourceSet.addLoadOption(XtextResource.OPTION_RESOLVE_ALL, Boolean.TRUE); 

/*File parsing*/ 

Resource resource = resourceSet.createResource(URI.createURI(uriPrefix + fileName)); 
InputStream in = new FileInputStream(workingPath + fileName); 
resource.load(in, resourceSet.getLoadOptions()); 

if(resource.getContents().size() == 0) { 
    System.out.println("The file is empty: no folder has been generated"); 
    return null; 
} 
Prog model = (Prog) resource.getContents().get(0); 
return model; 

를로드 할 수 있지만 작업이 예외 상승하지 않습니다

!MESSAGE Invalid property category path: ValidationPropertiesPage (bundle: org.eclipse.wst.xml.ui, propertyPage: org.eclipse.wst.xml.ui.propertyPage.project.validation) 
org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Content is not allowed in prolog. 
    at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:195) 
    at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.java:240) 
    at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1505) 
    at org.xtext.example.mydsl.ui.popup.actions.RunClass.getProg(RunClass.java:203) 
    at org.xtext.example.mydsl.ui.popup.actions.RunClass.run(RunClass.java:88) 
    at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251) 
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584) 
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501) 
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411) 
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) 
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1276) 
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3554) 
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3179) 
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1022) 
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) 
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:916) 
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86) 
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:585) 
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) 
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:540) 
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) 
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124) 
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) 
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) 
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) 
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353) 
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:616) 
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629) 
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584) 
    at org.eclipse.equinox.launcher.Main.run(Main.java:1438) 
    at org.eclipse.equinox.launcher.Main.main(Main.java:1414) 
Caused by: org.xml.sax.SAXParseExceptionpublicId: platform:/resource/prova/a.myDsl; systemId: platform:/resource/prova/a.myDsl; lineNumber: 4; columnNumber: 1; Content is not allowed in prolog. 
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198) 
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177) 
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:391) 
    at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1404) 
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:1014) 
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:625) 
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:488) 
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:819) 
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:748) 
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123) 
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1208) 
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:525) 
    at javax.xml.parsers.SAXParser.parse(SAXParser.java:392) 
    at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:175) 
    ... 34 more 

내가 어떻게이 AST를로드 할 수 있습니다?

답변

0

오류 메시지는 이것이다 :

org.xml.sax.SAXParseException publicId: 
platform:/resource/prova/a.myDsl; systemId: platform:/resource/prova/a.myDsl; 
lineNumber: 4; columnNumber: 1; Content is not allowed in prolog 

이것은 프레임 워크가 작동하지 않습니다 XML로 DSL을로드하려고 것을 의미한다. 이 버그의 일반적인 원인은 파일 확장자 myDsl이 등록되지 않았기 때문입니다.

이이 호출을 사용하여 발생합니다

org.eclipse.xtext.resource.IResourceServiceProvider.Registry.INSTANCE.getExtensionToFactoryMap().put("myDsl", ...); 

이 방법은 당신의 DSL 요구되어 있는지 확인합니다.

또한 Eclipse 플러그인을 작성할 때 독립형 설정을 사용하지 않아야합니다. 이렇게하면 많은 전역 변수가 손상되고 의사 오류가 발생할 수 있습니다. Eclipse 플러그인의 경우 DSL 활성기가 사용됩니다 UI 번들에서 *Activator.java을 검색하십시오.

여기에는 getInjector()이라는 메서드가 있습니다.