JnarioNameProvider.java example

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Jnario-master
package org.jnario.jvmmodel;

import static com.google.common.base.Strings.isNullOrEmpty;
import static org.eclipse.xtext.EcoreUtil2.getContainerOfType;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtend.core.xtend.XtendClass;
import org.eclipse.xtext.util.IResourceScopeCache;
import org.jnario.util.XtendTypes;

import com.google.common.collect.ImmutableList;
import com.google.inject.Inject;
import com.google.inject.Provider;

public abstract class JnarioNameProvider {

	@Inject
	private IResourceScopeCache cache;

	private class Cache {
		public String get(EObject key, Provider<String> provider) {
			if (key.eResource() != null) {
				return cache.get(ImmutableList.of(key, this), key.eResource(), provider);
			}
			return provider.get();
		}
	}

	private Cache classNameCache = new Cache();
	private Cache fieldNameCache = new Cache();
	private Cache methodNameCache = new Cache();
	private Cache qualifiedNameCache = new Cache();
	private Cache describeCache = new Cache();

	public final String toQualifiedJavaClassName(final EObject eObject) {
		return qualifiedNameCache.get(eObject, new Provider<String>() {
			public String get() {
				return internalToQualifiedJavaClassName(eObject);
			}
		});
	}

	protected String internalToQualifiedJavaClassName(EObject eObject) {
		if (eObject == null) {
			return null;
		}
		String className = toJavaClassName(eObject);
		if (isNullOrEmpty(className)) {
			return null;
		}
		String packageName = getPackageName(eObject);
		if (isNullOrEmpty(packageName)) {
			return className;
		}
		return packageName + "." + className;
	}

	protected String getPackageName(EObject eObject) {
		XtendClass xtendClass = getContainerOfType(eObject, XtendClass.class);
		String packageName = XtendTypes.packageName(xtendClass);
		return packageName;
	}

	public final String toJavaClassName(final EObject eObject) {
		return classNameCache.get(eObject, new Provider<String>() {
			public String get() {
				return internalToJavaClassName(eObject);
			}
		});
	}

	public final String describe(final EObject eObject) {
		return describeCache.get(eObject, new Provider<String>() {
			public String get() {
				return internalDescribe(eObject);
			}
		});
	}

	public final String toMethodName(final EObject eObject) {
		return methodNameCache.get(eObject, new Provider<String>() {
			public String get() {
				return internalToMethodName(eObject);
			}
		});
	}

	public final String toFieldName(final EObject eObject) {
		return fieldNameCache.get(eObject, new Provider<String>() {
			public String get() {
				return internalToFieldName(eObject);
			}
		});
	}

	protected abstract String internalToJavaClassName(EObject eObject);

	protected abstract String internalDescribe(EObject eObject);

	protected abstract String internalToMethodName(EObject eObject);

	protected abstract String internalToFieldName(EObject eObject);

}