XText - Cannot load model in standalone setup

[Cuong Tran]

Hi Joerg and everyone,

I have defined a language to define conditional expressions using XText. The generated editor works fine that should indicate the parser and other components are valid. I want to use ONLY the parser in my scenario and I followed the instructions at http://wiki.eclipse.org/Xtext/FAQ#Why_do_I_get_compilation_errors_when_trying_to_import_an_existing_Xtext_grammar_using_the_with_statement.3F

Here is my code of Unit test (written in Xtend):

import uk.ac.man.xman.dsl.ConditionDSLStandaloneSetup

@RunWith(XtextRunner)

class ParsingText {

       @Test

       def void parseSampleText () {

               new StandaloneSetup().setPlatformUri("../");

                val injector = new ConditionDSLStandaloneSetup().createInjectorAndDoEMFRegistration();

                val resourceSet = injector.getInstance(typeof(XtextResourceSet));

                resourceSet.addLoadOption(XtextResource.OPTION_RESOLVE_ALL, Boolean.TRUE);

                val uri  = URI.createURI("dummy:/example.cdsl")

                val resource = resourceSet.createResource(uri); //ERROR happened here

                val in = new ByteArrayInputStream("((id1 == 1) && (id2 == 2))".getBytes());

                resource.load(in, resourceSet.getLoadOptions());

       }

}

However, I faced an exception:

com.google.inject.ProvisionException: Guice provision errors:

1) Error injecting constructor, org.eclipse.emf.common.util.WrappedException: java.lang.ArrayIndexOutOfBoundsException: 3

  at org.eclipse.xtext.common.services.TerminalsGrammarAccess.<init>(Unknown Source)

  at org.eclipse.xtext.common.services.TerminalsGrammarAccess.class(Unknown Source)

  while locating org.eclipse.xtext.common.services.TerminalsGrammarAccess

    for parameter 1 at uk.ac.man.xman.dsl.services.ConditionDSLGrammarAccess.<init>(Unknown Source)

  at uk.ac.man.xman.dsl.services.ConditionDSLGrammarAccess.class(Unknown Source)

  while locating uk.ac.man.xman.dsl.services.ConditionDSLGrammarAccess

  while locating org.eclipse.xtext.IGrammarAccess

    for field at org.eclipse.xtext.linking.lazy.LazyLinker.grammarAccess(Unknown Source)

  while locating org.eclipse.xtext.linking.lazy.LazyLinker

  while locating org.eclipse.xtext.linking.ILinker

    for field at org.eclipse.xtext.resource.XtextResource.linker(Unknown Source)

  while locating org.eclipse.xtext.linking.lazy.LazyLinkingResource

  while locating org.eclipse.xtext.resource.XtextResource

Caused by: org.eclipse.emf.common.util.WrappedException: java.lang.ArrayIndexOutOfBoundsException: 3

at org.eclipse.xtext.parser.BaseEPackageAccess.loadResource(BaseEPackageAccess.java:57)

at org.eclipse.xtext.parser.BaseEPackageAccess.loadGrammarFile(BaseEPackageAccess.java:44)

at org.eclipse.xtext.service.GrammarProvider.getGrammar(GrammarProvider.java:60)

at org.eclipse.xtext.common.services.TerminalsGrammarAccess.internalFindGrammar(TerminalsGrammarAccess.java:37)

at org.eclipse.xtext.common.services.TerminalsGrammarAccess.<init>(TerminalsGrammarAccess.java:33)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

....

Any idea why this happened? Your help is appreciated.