Xtext Elements Access - eclipse

Question

I have written in Xtext:
grammar org.xtext.example.dsl.Dsl with org.eclipse.xtext.common.Terminals
generate dsl "http://www.xtext.org/example/dsl/Dsl"
Dsl :
(elements += Type)*
;
Type:
System
;
System:
'The system' name = ID 'consists of the following:
;
And now I run the editor and type in a system name.
How can I acces the System name in my Eclipse file?

Answer 1

Here is the soulution.
Write the following code in src folder in org.example.somthing.generator package and class is Something.xtend (.xtend)
This is for code generation and it is generated by xtext. You will find doGenerate(Resource resource, IFileSystemAccess fsa) method write following code in that method..
class DomainmodelGenerator implements IGenerator {
#Inject extension IQualifiedNameProvider
override void doGenerate(Resource resource, IFileSystemAccess fsa) {
for(e: resource.allContents.toIterable.filter(DSL)) {
fsa.generateFile("abcd.txt",e.compile)
}
def compile(DSL d) '''
«d.System.name»'''
}
Now you have to write the main class to call the method of above class..
Here is the code...
public class Main {
#Inject
private Provider<ResourceSet> resourceSetProvider;
#Inject
private IResourceValidator validator;
#Inject
private IGenerator generator;
#Inject
private JavaIoFileSystemAccess fileAccess;
public static void main(String[] args) {
Injector injector = new DomainmodelStandaloneSetupGenerated()
.createInjectorAndDoEMFRegistration();
Main main = injector.getInstance(Main.class);
main.runGenerator("sample.dmodel");
}
protected void runGenerator(String string) {
// load the resource
ResourceSet set = resourceSetProvider.get();
Resource resource = set.getResource(URI.createURI(string), true);
List<Issue> list = validator.validate(resource, CheckMode.ALL,
CancelIndicator.NullImpl);
if (!list.isEmpty()) {
for (Issue issue : list) {
System.err.println(issue);
}
return;
}
// configure and start the generator
fileAccess.setOutputPath("output/");
generator.doGenerate(resource, fileAccess);
System.out.println("Code generation finished.");
}
}