/*
* Copyright 2011 JBoss, by Red Hat, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.errai.codegen.meta.impl.gwt;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.jboss.errai.codegen.DefModifiers;
import org.jboss.errai.codegen.Parameter;
import org.jboss.errai.codegen.builder.impl.Scope;
import org.jboss.errai.codegen.meta.*;
import org.jboss.errai.codegen.meta.impl.AbstractMetaClass;
import org.jboss.errai.codegen.util.GWTPrivateMemberAccessor;
import org.jboss.errai.codegen.util.GenUtil;
import org.jboss.errai.codegen.util.PrivateAccessUtil;
import com.google.gwt.core.ext.typeinfo.JArrayType;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JConstructor;
import com.google.gwt.core.ext.typeinfo.JEnumType;
import com.google.gwt.core.ext.typeinfo.JField;
import com.google.gwt.core.ext.typeinfo.JGenericType;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.core.ext.typeinfo.JParameter;
import com.google.gwt.core.ext.typeinfo.JParameterizedType;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.core.ext.typeinfo.JTypeParameter;
import com.google.gwt.core.ext.typeinfo.NotFoundException;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
/**
* @author Mike Brock <cbrock@redhat.com>
* @author Christian Sadilek <csadilek@redhat.com>
*/
public class GWTClass extends AbstractMetaClass<JType> {
protected final Annotation[] annotations;
protected TypeOracle oracle;
static {
GenUtil.addClassAlias(GWTClass.class);
PrivateAccessUtil.registerPrivateMemberAccessor("jsni", new GWTPrivateMemberAccessor());
}
protected GWTClass(final TypeOracle oracle, final JType classType, final boolean erased) {
super(classType);
this.oracle = oracle;
final JClassType classOrInterface = classType.isClassOrInterface();
if (classOrInterface != null) {
annotations = AnnotationParser.parseAnnotations(classOrInterface.getAnnotations());
}
else {
annotations = new Annotation[0];
}
if (classType.getQualifiedSourceName().contains(" ")
|| classType.getQualifiedSourceName().contains("?")) {
throw new IllegalArgumentException("Cannot represent \"" + classType + "\" as a class. Try a different meta type such as GWTWildcardType or GWTTypeVaraible.");
}
final JParameterizedType parameterizedType = classType.isParameterized();
if (!erased) {
if (parameterizedType != null) {
super.parameterizedType = new GWTParameterizedType(oracle, parameterizedType);
}
}
}
public static MetaClass newInstance(final TypeOracle oracle, final JType type) {
return newUncachedInstance(oracle, type);
}
public static MetaClass newInstance(final TypeOracle oracle, final String type) {
try {
return newUncachedInstance(oracle, oracle.getType(type));
}
catch (NotFoundException e) {
return null;
}
}
public static MetaClass newUncachedInstance(final TypeOracle oracle, final JType type) {
return new GWTClass(oracle, type, false);
}
public static MetaClass newUncachedInstance(final TypeOracle oracle, final JType type, final boolean erased) {
return new GWTClass(oracle, type, erased);
}
public static MetaClass[] fromClassArray(final TypeOracle oracle, final JClassType[] classes) {
final MetaClass[] newClasses = new MetaClass[classes.length];
for (int i = 0; i < classes.length; i++) {
newClasses[i] = newInstance(oracle, classes[i]);
}
return newClasses;
}
public static Class<?>[] jParmToClass(final JParameter[] parms) throws ClassNotFoundException {
final Class<?>[] classes = new Class<?>[parms.length];
for (int i = 0; i < parms.length; i++) {
classes[i] = getPrimitiveOrClass(parms[i]);
}
return classes;
}
public static Class<?> getPrimitiveOrClass(final JParameter parm) throws ClassNotFoundException {
final JType type = parm.getType();
final String name =
type.isArray() != null ? type.getJNISignature().replace("/", ".") : type.getQualifiedSourceName();
if (parm.getType().isPrimitive() != null) {
final char sig = parm.getType().isPrimitive().getJNISignature().charAt(0);
switch (sig) {
case 'Z':
return boolean.class;
case 'B':
return byte.class;
case 'C':
return char.class;
case 'D':
return double.class;
case 'F':
return float.class;
case 'I':
return int.class;
case 'J':
return long.class;
case 'S':
return short.class;
case 'V':
return void.class;
default:
return null;
}
}
else {
return Class.forName(name, false, Thread.currentThread().getContextClassLoader());
}
}
@Override
public String getName() {
return getEnclosedMetaObject().getSimpleSourceName();
}
@Override
public String getFullyQualifiedName() {
if (isArray()) {
if (getOuterComponentType().isPrimitive()) {
return getInternalName();
}
else {
return getInternalName().replaceAll("/", "\\.");
}
}
else {
return getEnclosedMetaObject().getQualifiedBinaryName();
}
}
@Override
public String getCanonicalName() {
return getEnclosedMetaObject().getQualifiedSourceName();
}
@Override
public String getInternalName() {
return getEnclosedMetaObject().getJNISignature();
}
@Override
public String getPackageName() {
return getEnclosedMetaObject().isClassOrInterface().getPackage().getName();
}
private static MetaMethod[] fromMethodArray(final TypeOracle oracle, final JMethod[] methods) {
final List<MetaMethod> methodList = new ArrayList<MetaMethod>();
for (final JMethod m : methods) {
methodList.add(new GWTMethod(oracle, m));
}
return methodList.toArray(new MetaMethod[methodList.size()]);
}
private List<MetaMethod> getSpecialTypeMethods() {
final List<MetaMethod> meths = new ArrayList<MetaMethod>();
final JEnumType type = getEnclosedMetaObject().isEnum();
if (type != null) {
meths.add(new GWTSpecialMethod(this, DefModifiers.none(), Scope.Public, String.class, "name"));
meths.add(new GWTSpecialMethod(this, DefModifiers.none(), Scope.Public, Enum.class, "valueOf", Parameter.of(
String.class, "p").getMetaParameter()));
meths.add(new GWTSpecialMethod(this, DefModifiers.none(), Scope.Public, Enum[].class, "values"));
}
return meths;
}
// TODO report this to be fixed in GWT: getClass() in java.lang.Object is reported as non-final method.
private static final List<MetaMethod> overrideMethods =
Arrays.asList(MetaClassFactory.get(Object.class).getMethods());
@Override
public MetaMethod[] getMethods() {
final Set<MetaMethod> meths = new LinkedHashSet<MetaMethod>();
meths.addAll(getSpecialTypeMethods());
JClassType type = getEnclosedMetaObject().isClassOrInterface();
if (type == null) {
return null;
}
final Set<String> processedMethods = new HashSet<String>();
do {
for (final JMethod jMethod : type.getMethods()) {
GWTMethod gwtMethod = new GWTMethod(oracle, jMethod);
String readableMethodDecl = GenUtil.getMethodString(gwtMethod);
if (!jMethod.isPrivate() && !processedMethods.contains(readableMethodDecl)) {
meths.add(gwtMethod);
processedMethods.add(readableMethodDecl);
}
}
for (final JClassType interfaceType : type.getImplementedInterfaces()) {
for (MetaMethod ifaceMethod : Arrays.asList(GWTClass.newInstance(oracle, interfaceType).getMethods())) {
String readableMethodDecl = GenUtil.getMethodString(ifaceMethod);
if (!processedMethods.contains(readableMethodDecl)) {
meths.add(ifaceMethod);
processedMethods.add(readableMethodDecl);
}
}
}
}
while ((type = type.getSuperclass()) != null && !type.getQualifiedSourceName().equals("java.lang.Object"));
meths.addAll(overrideMethods);
return meths.toArray(new MetaMethod[meths.size()]);
}
@Override
public MetaMethod[] getDeclaredMethods() {
final JClassType type = getEnclosedMetaObject().isClassOrInterface();
if (type == null) {
return null;
}
return fromMethodArray(oracle, type.getMethods());
}
private static MetaField[] fromFieldArray(final TypeOracle oracle, final JField[] methods) {
final List<MetaField> methodList = new ArrayList<MetaField>();
for (final JField f : methods) {
methodList.add(new GWTField(oracle, f));
}
return methodList.toArray(new MetaField[methodList.size()]);
}
@Override
public MetaClass getErased() {
if (getParameterizedType() == null) {
return this;
}
else {
return new GWTClass(oracle, getEnclosedMetaObject().getErasedType(), true);
}
}
@Override
public MetaField[] getFields() {
final JClassType type = getEnclosedMetaObject().isClassOrInterface();
if (type == null) {
return null;
}
return fromFieldArray(oracle, type.getFields());
}
@Override
public MetaField[] getDeclaredFields() {
return getFields();
}
@Override
public MetaField getField(final String name) {
JClassType type = getEnclosedMetaObject().isClassOrInterface();
if (type == null) {
if ("length".equals(name) && getEnclosedMetaObject().isArray() != null) {
return new MetaField.ArrayLengthMetaField(this);
}
return null;
}
JField field = type.findField(name);
while ((field == null || (field != null && !field.isPublic())) &&
(type = type.getSuperclass()) != null && !type.getQualifiedSourceName().equals("java.lang.Object")) {
field = type.findField(name);
for (final JClassType interfaceType : type.getImplementedInterfaces()) {
field = interfaceType.findField(name);
}
}
if (field == null) {
throw new RuntimeException("no such field: " + name + " in class: " + this);
}
return new GWTField(oracle, field);
}
@Override
public MetaField getDeclaredField(final String name) {
JClassType type = getEnclosedMetaObject().isClassOrInterface();
if (type == null) {
if ("length".equals(name) && getEnclosedMetaObject().isArray() != null) {
return new MetaField.ArrayLengthMetaField(this);
}
return null;
}
JField field = type.findField(name);
if (field == null) {
return null;
}
return new GWTField(oracle, field);
}
private static MetaConstructor[] fromMethodArray(final TypeOracle oracle, final JConstructor[] constructors) {
final List<MetaConstructor> constructorList = new ArrayList<MetaConstructor>();
for (final JConstructor c : constructors) {
constructorList.add(new GWTConstructor(oracle, c));
}
return constructorList.toArray(new MetaConstructor[constructorList.size()]);
}
@Override
public MetaConstructor[] getConstructors() {
final JClassType type = getEnclosedMetaObject().isClassOrInterface();
if (type == null) {
return null;
}
return fromMethodArray(oracle, type.getConstructors());
}
@Override
public MetaConstructor[] getDeclaredConstructors() {
return getConstructors();
}
@Override
public MetaClass[] getDeclaredClasses() {
final JClassType[] nestedTypes = getEnclosedMetaObject().isClassOrInterface().getNestedTypes();
final MetaClass[] declaredClasses = new MetaClass[nestedTypes.length];
int i = 0;
for (JClassType type : nestedTypes) {
declaredClasses[i++] = GWTClass.newInstance(oracle, type);
}
return declaredClasses;
}
@Override
public MetaClass[] getInterfaces() {
final JClassType jClassType = getEnclosedMetaObject().isClassOrInterface();
if (jClassType == null)
return new MetaClass[0];
final List<MetaClass> metaClassList = new ArrayList<MetaClass>();
for (final JClassType type : jClassType.getImplementedInterfaces()) {
metaClassList.add(new GWTClass(oracle, type, false));
}
return metaClassList.toArray(new MetaClass[metaClassList.size()]);
}
@Override
public boolean isArray() {
return getEnclosedMetaObject().isArray() != null;
}
@Override
public MetaClass getSuperClass() {
JClassType type = getEnclosedMetaObject().isClassOrInterface();
if (type == null) {
return null;
}
type = type.getSuperclass();
if (type == null) {
return null;
}
return newUncachedInstance(oracle, type);
}
@Override
public MetaClass getComponentType() {
final JArrayType type = getEnclosedMetaObject().isArray();
if (type == null) {
return null;
}
return newUncachedInstance(oracle, type.getComponentType());
}
@Override
public Annotation[] getAnnotations() {
return annotations;
}
@Override
public MetaTypeVariable[] getTypeParameters() {
final List<MetaTypeVariable> typeVariables = new ArrayList<MetaTypeVariable>();
final JGenericType genericType = getEnclosedMetaObject().isGenericType();
if (genericType != null) {
for (final JTypeParameter typeParameter : genericType.getTypeParameters()) {
typeVariables.add(new GWTTypeVariable(oracle, typeParameter));
}
}
return typeVariables.toArray(new MetaTypeVariable[typeVariables.size()]);
}
@Override
public boolean isVoid() {
return getEnclosedMetaObject().getSimpleSourceName().equals("void");
}
@Override
public boolean isPrimitive() {
return getEnclosedMetaObject().isPrimitive() != null;
}
@Override
public boolean isInterface() {
return getEnclosedMetaObject().isInterface() != null;
}
@Override
public boolean isAbstract() {
return getEnclosedMetaObject().isClass() != null && getEnclosedMetaObject().isClass().isAbstract();
}
@Override
public boolean isEnum() {
return getEnclosedMetaObject().isEnum() != null;
}
@Override
public boolean isAnnotation() {
return getEnclosedMetaObject().isAnnotation() != null;
}
@Override
public boolean isPublic() {
return getEnclosedMetaObject().isClassOrInterface() != null &&
getEnclosedMetaObject().isClassOrInterface().isPublic();
}
@Override
public boolean isPrivate() {
return getEnclosedMetaObject().isClassOrInterface() != null &&
getEnclosedMetaObject().isClassOrInterface().isPrivate();
}
@Override
public boolean isProtected() {
return getEnclosedMetaObject().isClassOrInterface() != null &&
getEnclosedMetaObject().isClassOrInterface().isProtected();
}
@Override
public boolean isFinal() {
return getEnclosedMetaObject().isClassOrInterface() != null &&
getEnclosedMetaObject().isClassOrInterface().isFinal();
}
@Override
public boolean isStatic() {
return getEnclosedMetaObject().isClassOrInterface() != null &&
getEnclosedMetaObject().isClassOrInterface().isStatic();
}
@Override
public boolean isSynthetic() {
return false;
}
@Override
public boolean isAnonymousClass() {
return false;
}
@Override
public MetaClass asArrayOf(final int dimensions) {
JType type = getEnclosedMetaObject();
for (int i = 0; i < dimensions; i++) {
type = oracle.getArrayType(type);
}
return new GWTClass(oracle, type, false);
}
}