Exception in thread "main" java.lang.RuntimeException: Cannot create a resource for 'Input\mydslfile.dsl'; a registered resource factory is needed
at org.eclipse.xtext.resource.XtextResourceSet.getResource(XtextResourceSet.java:156)
at org.eclipse.xtext.resource.SynchronizedXtextResourceSet.getResource(SynchronizedXtextResourceSet.java:23)
at it.xtext.mydsl.generator.Main.runGenerator(Main.java:51)
at it.xtext.mydsl.generator.Main.main(Main.java:32)

module it.xtext.facpl.GenerateFacpl

import org.eclipse.emf.mwe.utils.*
import org.eclipse.xtext.generator.*
import org.eclipse.xtext.ui.generator.*

var grammarURI = "classpath:/it/xtext/facpl/Facpl.xtext"
var file.extensions = "fpl"
var projectName = "it.xtext.facpl"
var runtimeProject = "../${projectName}"

Workflow {
bean = StandaloneSetup {
scanClassPath = true
platformUri = "${runtimeProject}/.."
}

component = DirectoryCleaner {
directory = "${runtimeProject}/src-gen"
}

component = DirectoryCleaner {
directory = "${runtimeProject}.ui/src-gen"
}

component = Generator {
pathRtProject = runtimeProject
pathUiProject = "${runtimeProject}.ui"
pathTestProject = "${runtimeProject}.tests"
projectNameRt = projectName
projectNameUi = "${projectName}.ui"
language = {
uri = grammarURI
fileExtensions = file.extensions

// Java API to access grammar elements (required by several other fragments)
fragment = grammarAccess.GrammarAccessFragment {}

// generates Java API for the generated EPackages
fragment = ecore.EcoreGeneratorFragment {
}

// Serializer 2.0
fragment = serializer.SerializerFragment {
generateStub = false
}

// a custom ResourceFactory for use with EMF
fragment = resourceFactory.ResourceFactoryFragment {
fileExtensions = file.extensions
}

// The antlr parser generator fragment.
fragment = parser.antlr.XtextAntlrGeneratorFragment {
}

// java-based API for validation
fragment = validation.JavaValidatorFragment {
}

// scoping and exporting API
fragment = scoping.ImportNamespacesScopingFragment {}
fragment = exporting.QualifiedNamesFragment {}
fragment = builder.BuilderIntegrationFragment {}

// generator API
fragment = generator.GeneratorFragment {
generateMwe = false
generateJavaMain = true
}

// formatter API
fragment = formatting.FormatterFragment {}

// labeling API
fragment = labeling.LabelProviderFragment {}

// outline API
fragment = outline.OutlineTreeProviderFragment {}
fragment = outline.QuickOutlineFragment {}

// quickfix API
fragment = quickfix.QuickfixProviderFragment {}

// content assist API
fragment = contentAssist.JavaBasedContentAssistFragment {}

// generates a more lightweight Antlr parser and lexer tailored for content assist
fragment = parser.antlr.XtextAntlrUiGeneratorFragment {}

// generates junit test support classes into Generator#pathTestProject
fragment = junit.Junit4Fragment {}

// rename refactoring
fragment = refactoring.RefactorElementNameFragment {}

// provides the necessary bindings for java types integration
fragment = types.TypesGeneratorFragment {}

// generates the required bindings only if the grammar inherits from Xbase
fragment = xbase.XbaseGeneratorFragment {}

// provides a preference page for template proposals
fragment = templates.CodetemplatesGeneratorFragment {}

// provides a compare view
fragment = compare.CompareFragment {
fileExtensions = file.extensions
}
}
}
}