2 * Copyright (c) 2018 Pantheon Technologies, s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.binding.java.api.generator;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Verify.verify;
12 import static java.util.Objects.requireNonNull;
13 import static org.opendaylight.mdsal.binding.spec.naming.BindingMapping.AUGMENTABLE_AUGMENTATION_NAME;
14 import static org.opendaylight.mdsal.binding.spec.naming.BindingMapping.GETTER_PREFIX;
16 import com.google.common.collect.ImmutableSortedSet;
17 import java.lang.reflect.Method;
18 import java.util.AbstractMap;
19 import java.util.Arrays;
20 import java.util.Collection;
21 import java.util.Collections;
22 import java.util.Comparator;
23 import java.util.HashMap;
24 import java.util.LinkedHashSet;
25 import java.util.List;
27 import java.util.Objects;
28 import java.util.Optional;
30 import java.util.regex.Pattern;
31 import java.util.stream.Collectors;
32 import org.eclipse.jdt.annotation.NonNull;
33 import org.eclipse.xtext.xbase.lib.StringExtensions;
34 import org.opendaylight.mdsal.binding.model.api.ConcreteType;
35 import org.opendaylight.mdsal.binding.model.api.DefaultType;
36 import org.opendaylight.mdsal.binding.model.api.GeneratedProperty;
37 import org.opendaylight.mdsal.binding.model.api.GeneratedTransferObject;
38 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
39 import org.opendaylight.mdsal.binding.model.api.JavaTypeName;
40 import org.opendaylight.mdsal.binding.model.api.MethodSignature;
41 import org.opendaylight.mdsal.binding.model.api.ParameterizedType;
42 import org.opendaylight.mdsal.binding.model.api.Restrictions;
43 import org.opendaylight.mdsal.binding.model.api.Type;
44 import org.opendaylight.mdsal.binding.model.util.Types;
45 import org.opendaylight.mdsal.binding.spec.naming.BindingMapping;
46 import org.opendaylight.yangtools.yang.binding.Augmentable;
47 import org.opendaylight.yangtools.yang.binding.CodeHelpers;
50 * Base Java file template. Contains a non-null type and imports which the generated code refers to.
52 class JavaFileTemplate {
54 * {@code java.lang.Class} as a JavaTypeName.
56 static final @NonNull JavaTypeName CLASS = JavaTypeName.create(Class.class);
58 * {@code java.lang.Deprecated} as a JavaTypeName.
60 static final @NonNull JavaTypeName DEPRECATED = JavaTypeName.create(Deprecated.class);
62 * {@code java.lang.NullPointerException} as a JavaTypeName.
64 static final @NonNull JavaTypeName NPE = JavaTypeName.create(NullPointerException.class);
66 * {@code java.lang.Override} as a JavaTypeName.
68 static final @NonNull JavaTypeName OVERRIDE = JavaTypeName.create(Override.class);
70 * {@code java.lang.void} as a JavaTypeName.
72 static final @NonNull JavaTypeName SUPPRESS_WARNINGS = JavaTypeName.create(SuppressWarnings.class);
74 * {@code java.lang.SuppressWarnings} as a JavaTypeName.
76 static final @NonNull JavaTypeName VOID = JavaTypeName.create(void.class);
79 * {@code java.util.Arrays} as a JavaTypeName.
81 static final @NonNull JavaTypeName JU_ARRAYS = JavaTypeName.create(Arrays.class);
83 * {@code java.util.HashMap} as a JavaTypeName.
85 static final @NonNull JavaTypeName JU_HASHMAP = JavaTypeName.create(HashMap.class);
87 * {@code java.util.List} as a JavaTypeName.
89 static final @NonNull JavaTypeName JU_LIST = JavaTypeName.create(List.class);
91 * {@code java.util.Map} as a JavaTypeName.
93 static final @NonNull JavaTypeName JU_MAP = JavaTypeName.create(Map.class);
95 * {@code java.util.Objects} as a JavaTypeName.
97 static final @NonNull JavaTypeName JU_OBJECTS = JavaTypeName.create(Objects.class);
99 * {@code java.util.regex.Pattern} as a JavaTypeName.
101 static final @NonNull JavaTypeName JUR_PATTERN = JavaTypeName.create(Pattern.class);
104 * {@code org.eclipse.jdt.annotation.NonNull} as a JavaTypeName.
106 static final @NonNull JavaTypeName NONNULL = JavaTypeName.create("org.eclipse.jdt.annotation", "NonNull");
108 * {@code org.eclipse.jdt.annotation.Nullable} as a JavaTypeName.
110 static final @NonNull JavaTypeName NULLABLE = JavaTypeName.create("org.eclipse.jdt.annotation", "Nullable");
113 * {@code org.opendaylight.yangtools.yang.binding.CodeHelpers} as a JavaTypeName.
115 static final @NonNull JavaTypeName CODEHELPERS = JavaTypeName.create(CodeHelpers.class);
117 private static final Comparator<MethodSignature> METHOD_COMPARATOR = new AlphabeticallyTypeMemberComparator<>();
118 private static final Type AUGMENTATION_RET_TYPE;
123 m = Augmentable.class.getDeclaredMethod(AUGMENTABLE_AUGMENTATION_NAME, Class.class);
124 } catch (NoSuchMethodException e) {
125 throw new ExceptionInInitializerError(e);
128 AUGMENTATION_RET_TYPE = DefaultType.of(JavaTypeName.create(m.getReturnType()));
131 private final AbstractJavaGeneratedType javaType;
132 private final GeneratedType type;
134 JavaFileTemplate(final @NonNull GeneratedType type) {
135 this(new TopLevelJavaGeneratedType(type), type);
138 JavaFileTemplate(final AbstractJavaGeneratedType javaType, final GeneratedType type) {
139 this.javaType = requireNonNull(javaType);
140 this.type = requireNonNull(type);
143 final AbstractJavaGeneratedType javaType() {
147 final GeneratedType type() {
151 final String generateImportBlock() {
152 verify(javaType instanceof TopLevelJavaGeneratedType);
153 return ((TopLevelJavaGeneratedType) javaType).imports().map(name -> "import " + name + ";\n")
154 .collect(Collectors.joining());
157 final @NonNull String importedJavadocName(final @NonNull Type intype) {
158 return importedName(intype instanceof ParameterizedType ? ((ParameterizedType) intype).getRawType() : intype);
161 final @NonNull String importedName(final @NonNull Type intype) {
162 return javaType.getReferenceString(intype);
165 final @NonNull String importedName(final @NonNull Type intype, final @NonNull String annotation) {
166 return javaType.getReferenceString(intype, annotation);
169 final @NonNull String importedName(final Class<?> cls) {
170 return importedName(Types.typeForClass(cls));
173 final @NonNull String importedName(final @NonNull JavaTypeName intype) {
174 return javaType.getReferenceString(intype);
177 final @NonNull String importedNonNull(final @NonNull Type intype) {
178 return importedName(intype, importedName(NONNULL));
181 final @NonNull String importedNullable(final @NonNull Type intype) {
182 return importedName(intype, importedName(NULLABLE));
185 final @NonNull String fullyQualifiedNonNull(final @NonNull Type intype) {
186 return fullyQualifiedName(intype, importedName(NONNULL));
189 final @NonNull String fullyQualifiedName(final @NonNull Type intype, final @NonNull String annotation) {
190 return javaType.getFullyQualifiedReference(intype, annotation);
193 // Exposed for BuilderTemplate
194 boolean isLocalInnerClass(final JavaTypeName name) {
195 final Optional<JavaTypeName> optEnc = name.immediatelyEnclosingClass();
196 return optEnc.isPresent() && type.getIdentifier().equals(optEnc.get());
199 final CharSequence generateInnerClass(final GeneratedType innerClass) {
200 if (!(innerClass instanceof GeneratedTransferObject)) {
204 final GeneratedTransferObject gto = (GeneratedTransferObject) innerClass;
205 final NestedJavaGeneratedType innerJavaType = javaType.getEnclosedType(innerClass.getIdentifier());
206 return gto.isUnionType() ? new UnionTemplate(innerJavaType, gto).generateAsInnerClass()
207 : new ClassTemplate(innerJavaType, gto).generateAsInnerClass();
211 * Return imported name of java.util class, whose hashCode/equals methods we want to invoke on the property. Returns
212 * {@link Arrays} if the property is an array, {@link Objects} otherwise.
214 * @param property Generated property
215 * @return Imported class name
217 final String importedUtilClass(final GeneratedProperty property) {
218 return importedName(property.getReturnType().getName().indexOf('[') != -1 ? JU_ARRAYS : JU_OBJECTS);
222 * Run type analysis, which results in identification of the augmentable type, as well as all methods available
223 * to the type, expressed as properties.
225 static Map.Entry<Type, Set<BuilderGeneratedProperty>> analyzeTypeHierarchy(final GeneratedType type) {
226 final Set<MethodSignature> methods = new LinkedHashSet<>();
227 final Type augmentType = createMethods(type, methods);
228 final Set<MethodSignature> sortedMethods = ImmutableSortedSet.orderedBy(METHOD_COMPARATOR).addAll(methods)
231 return new AbstractMap.SimpleImmutableEntry<>(augmentType, propertiesFromMethods(sortedMethods));
234 static final Restrictions restrictionsForSetter(final Type actualType) {
235 return actualType instanceof GeneratedType ? null : getRestrictions(actualType);
238 static final Restrictions getRestrictions(final Type type) {
239 if (type instanceof ConcreteType) {
240 return ((ConcreteType) type).getRestrictions();
242 if (type instanceof GeneratedTransferObject) {
243 return ((GeneratedTransferObject) type).getRestrictions();
249 * Generate a call to {@link Object#clone()} if target field represents an array. Returns an empty string otherwise.
251 * @param property Generated property
252 * @return The string used to clone the property, or an empty string
254 static final String cloneCall(final GeneratedProperty property) {
255 return property.getReturnType().getName().endsWith("[]") ? ".clone()" : "";
259 * Returns set of method signature instances which contains all the methods of the <code>genType</code>
260 * and all the methods of the implemented interfaces.
262 * @returns set of method signature instances
264 private static ParameterizedType createMethods(final GeneratedType type, final Set<MethodSignature> methods) {
265 methods.addAll(type.getMethodDefinitions());
266 return collectImplementedMethods(type, methods, type.getImplements());
270 * Adds to the <code>methods</code> set all the methods of the <code>implementedIfcs</code>
271 * and recursively their implemented interfaces.
273 * @param methods set of method signatures
274 * @param implementedIfcs list of implemented interfaces
276 private static ParameterizedType collectImplementedMethods(final GeneratedType type,
277 final Set<MethodSignature> methods, final List<Type> implementedIfcs) {
278 if (implementedIfcs == null || implementedIfcs.isEmpty()) {
282 ParameterizedType augmentType = null;
283 for (Type implementedIfc : implementedIfcs) {
284 if (implementedIfc instanceof GeneratedType && !(implementedIfc instanceof GeneratedTransferObject)) {
285 final GeneratedType ifc = (GeneratedType) implementedIfc;
286 methods.addAll(ifc.getMethodDefinitions());
288 final ParameterizedType t = collectImplementedMethods(type, methods, ifc.getImplements());
289 if (t != null && augmentType == null) {
292 } else if (Augmentable.class.getName().equals(implementedIfc.getFullyQualifiedName())) {
293 augmentType = Types.parameterizedTypeFor(AUGMENTATION_RET_TYPE, DefaultType.of(type.getIdentifier()));
301 * Creates set of generated property instances from getter <code>methods</code>.
303 * @param methods set of method signature instances which should be transformed to list of properties
304 * @return set of generated property instances which represents the getter <code>methods</code>
306 private static Set<BuilderGeneratedProperty> propertiesFromMethods(final Collection<MethodSignature> methods) {
307 if (methods == null || methods.isEmpty()) {
308 return Collections.emptySet();
310 final Set<BuilderGeneratedProperty> result = new LinkedHashSet<>();
311 for (MethodSignature m : methods) {
312 final BuilderGeneratedProperty createdField = propertyFromGetter(m);
313 if (createdField != null) {
314 result.add(createdField);
321 * Creates generated property instance from the getter <code>method</code> name and return type.
323 * @param method method signature from which is the method name and return type obtained
324 * @return generated property instance for the getter <code>method</code>
325 * @throws IllegalArgumentException <ul>
326 * <li>if the <code>method</code> equals <code>null</code></li>
327 * <li>if the name of the <code>method</code> equals <code>null</code></li>
328 * <li>if the name of the <code>method</code> is empty</li>
329 * <li>if the return type of the <code>method</code> equals <code>null</code></li>
332 private static BuilderGeneratedProperty propertyFromGetter(final MethodSignature method) {
333 checkArgument(method != null);
334 checkArgument(method.getReturnType() != null);
335 checkArgument(method.getName() != null);
336 checkArgument(!method.getName().isEmpty());
337 if (method.isDefault()) {
340 if (!BindingMapping.isGetterMethodName(method.getName())) {
344 final String fieldName = StringExtensions.toFirstLower(method.getName().substring(GETTER_PREFIX.length()));
345 return new BuilderGeneratedProperty(fieldName, method);