2 * Copyright (c) 2013 Cisco Systems, Inc. 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.spec.naming;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import com.google.common.annotations.Beta;
13 import com.google.common.base.CharMatcher;
14 import com.google.common.base.Splitter;
15 import com.google.common.collect.BiMap;
16 import com.google.common.collect.HashBiMap;
17 import com.google.common.collect.ImmutableSet;
18 import com.google.common.collect.Interner;
19 import com.google.common.collect.Interners;
20 import java.util.Collection;
21 import java.util.Locale;
22 import java.util.Optional;
23 import java.util.regex.Matcher;
24 import java.util.regex.Pattern;
25 import org.eclipse.jdt.annotation.NonNull;
26 import org.opendaylight.yangtools.yang.binding.Augmentable;
27 import org.opendaylight.yangtools.yang.binding.DataContainer;
28 import org.opendaylight.yangtools.yang.binding.Identifiable;
29 import org.opendaylight.yangtools.yang.binding.ScalarTypeObject;
30 import org.opendaylight.yangtools.yang.common.QName;
31 import org.opendaylight.yangtools.yang.common.QNameModule;
32 import org.opendaylight.yangtools.yang.common.Revision;
35 public final class BindingMapping {
37 public static final @NonNull String VERSION = "0.6";
39 public static final ImmutableSet<String> JAVA_RESERVED_WORDS = ImmutableSet.of(
40 // https://docs.oracle.com/javase/specs/jls/se9/html/jls-3.html#jls-3.9
41 "abstract", "assert", "boolean", "break", "byte", "case", "catch", "char", "class", "const", "continue",
42 "default", "do", "double", "else", "enum", "extends", "final", "finally", "float", "for", "goto", "if",
43 "implements", "import", "instanceof", "int", "interface", "long", "native", "new", "package", "private",
44 "protected", "public", "return", "short", "static", "strictfp", "super", "switch", "synchronized", "this",
45 "throw", "throws", "transient", "try", "void", "volatile", "while", "_",
46 // https://docs.oracle.com/javase/specs/jls/se9/html/jls-3.html#jls-3.10.3
48 // https://docs.oracle.com/javase/specs/jls/se9/html/jls-3.html#jls-3.10.7
51 public static final @NonNull String DATA_ROOT_SUFFIX = "Data";
52 public static final @NonNull String RPC_SERVICE_SUFFIX = "Service";
53 public static final @NonNull String NOTIFICATION_LISTENER_SUFFIX = "Listener";
54 public static final @NonNull String QNAME_STATIC_FIELD_NAME = "QNAME";
55 public static final @NonNull String PACKAGE_PREFIX = "org.opendaylight.yang.gen.v1";
56 public static final @NonNull String AUGMENTATION_FIELD = "augmentation";
58 private static final Splitter CAMEL_SPLITTER = Splitter.on(CharMatcher.anyOf(" _.-/").precomputed())
59 .omitEmptyStrings().trimResults();
60 private static final Pattern COLON_SLASH_SLASH = Pattern.compile("://", Pattern.LITERAL);
61 private static final String QUOTED_DOT = Matcher.quoteReplacement(".");
62 private static final Splitter DOT_SPLITTER = Splitter.on('.');
64 public static final @NonNull String MODULE_INFO_CLASS_NAME = "$YangModuleInfoImpl";
65 public static final @NonNull String MODULE_INFO_QNAMEOF_METHOD_NAME = "qnameOf";
66 public static final @NonNull String MODEL_BINDING_PROVIDER_CLASS_NAME = "$YangModelBindingProvider";
69 * Name of {@link Augmentable#augmentation(Class)}.
71 public static final @NonNull String AUGMENTABLE_AUGMENTATION_NAME = "augmentation";
74 * Name of {@link Identifiable#key()}.
76 public static final @NonNull String IDENTIFIABLE_KEY_NAME = "key";
79 * Name of {@link DataContainer#implementedInterface()}.
81 public static final @NonNull String DATA_CONTAINER_IMPLEMENTED_INTERFACE_NAME = "implementedInterface";
84 * Name of default {@link Object#hashCode()} implementation for instantiated DataObjects. Each such generated
85 * interface contains this static method.
87 public static final @NonNull String BINDING_HASHCODE_NAME = "bindingHashCode";
90 * Name of default {@link Object#equals(Object)} implementation for instantiated DataObjects. Each such generated
91 * interface contains this static method.
93 public static final @NonNull String BINDING_EQUALS_NAME = "bindingEquals";
96 * Name of default {@link Object#toString()} implementation for instantiated DataObjects. Each such generated
97 * interface contains this static method.
99 public static final @NonNull String BINDING_TO_STRING_NAME = "bindingToString";
102 * Name of {@link ScalarTypeObject#getValue()}.
104 public static final @NonNull String SCALAR_TYPE_OBJECT_GET_VALUE_NAME = "getValue";
107 * Prefix for getter methods working on top of boolean.
109 public static final @NonNull String BOOLEAN_GETTER_PREFIX = "is";
112 * Prefix for normal getter methods.
114 public static final @NonNull String GETTER_PREFIX = "get";
117 * Prefix for non-null default wrapper methods. These methods always wrap a corresponding normal getter.
119 public static final @NonNull String NONNULL_PREFIX = "nonnull";
121 public static final @NonNull String RPC_INPUT_SUFFIX = "Input";
122 public static final @NonNull String RPC_OUTPUT_SUFFIX = "Output";
124 private static final Interner<String> PACKAGE_INTERNER = Interners.newWeakInterner();
126 private BindingMapping() {
130 public static @NonNull String getRootPackageName(final QName module) {
131 return getRootPackageName(module.getModule());
134 public static @NonNull String getRootPackageName(final QNameModule module) {
135 final StringBuilder packageNameBuilder = new StringBuilder().append(BindingMapping.PACKAGE_PREFIX).append('.');
137 String namespace = module.getNamespace().toString();
138 namespace = COLON_SLASH_SLASH.matcher(namespace).replaceAll(QUOTED_DOT);
140 final char[] chars = namespace.toCharArray();
141 for (int i = 0; i < chars.length; ++i) {
162 packageNameBuilder.append(chars);
163 if (chars[chars.length - 1] != '.') {
164 packageNameBuilder.append('.');
167 final Optional<Revision> optRev = module.getRevision();
168 if (optRev.isPresent()) {
169 // Revision is in format 2017-10-26, we want the output to be 171026, which is a matter of picking the
171 final String rev = optRev.get().toString();
172 checkArgument(rev.length() == 10, "Unsupported revision %s", rev);
173 packageNameBuilder.append("rev").append(rev, 2, 4).append(rev, 5, 7).append(rev.substring(8));
175 // No-revision packages are special
176 packageNameBuilder.append("norev");
179 return normalizePackageName(packageNameBuilder.toString());
182 public static @NonNull String normalizePackageName(final String packageName) {
183 final StringBuilder builder = new StringBuilder();
184 boolean first = true;
186 for (String p : DOT_SPLITTER.split(packageName.toLowerCase(Locale.ENGLISH))) {
193 if (Character.isDigit(p.charAt(0)) || BindingMapping.JAVA_RESERVED_WORDS.contains(p)) {
199 // Prevent duplication of input string
200 return PACKAGE_INTERNER.intern(builder.toString());
203 public static @NonNull String getClassName(final String localName) {
204 return toFirstUpper(toCamelCase(localName));
207 public static @NonNull String getClassName(final QName name) {
208 return toFirstUpper(toCamelCase(name.getLocalName()));
211 public static @NonNull String getMethodName(final String yangIdentifier) {
212 return toFirstLower(toCamelCase(yangIdentifier));
215 public static @NonNull String getMethodName(final QName name) {
216 return getMethodName(name.getLocalName());
219 public static @NonNull String getGetterPrefix(final boolean isBoolean) {
220 return isBoolean ? BOOLEAN_GETTER_PREFIX : GETTER_PREFIX;
223 public static @NonNull String getGetterMethodName(final String localName, final boolean isBoolean) {
224 return getGetterPrefix(isBoolean) + toFirstUpper(getPropertyName(localName));
227 public static @NonNull String getGetterMethodName(final QName name, final boolean isBoolean) {
228 return getGetterPrefix(isBoolean) + getGetterSuffix(name);
231 public static boolean isGetterMethodName(final String methodName) {
232 return methodName.startsWith(GETTER_PREFIX) || methodName.startsWith(BOOLEAN_GETTER_PREFIX);
235 public static @NonNull String getGetterMethodForNonnull(final String methodName) {
236 checkArgument(isNonnullMethodName(methodName));
237 return GETTER_PREFIX + methodName.substring(NONNULL_PREFIX.length());
240 public static @NonNull String getNonnullMethodName(final String localName) {
241 return NONNULL_PREFIX + toFirstUpper(getPropertyName(localName));
244 public static boolean isNonnullMethodName(final String methodName) {
245 return methodName.startsWith(NONNULL_PREFIX);
248 public static @NonNull String getGetterSuffix(final QName name) {
249 final String candidate = toFirstUpper(toCamelCase(name.getLocalName()));
250 return "Class".equals(candidate) ? "XmlClass" : candidate;
253 public static @NonNull String getPropertyName(final String yangIdentifier) {
254 final String potential = toFirstLower(toCamelCase(yangIdentifier));
255 if ("class".equals(potential)) {
261 private static @NonNull String toCamelCase(final String rawString) {
262 StringBuilder builder = new StringBuilder();
263 for (String comp : CAMEL_SPLITTER.split(rawString)) {
264 builder.append(toFirstUpper(comp));
266 return checkNumericPrefix(builder.toString());
269 private static @NonNull String checkNumericPrefix(final String rawString) {
270 if (rawString.isEmpty()) {
273 final char firstChar = rawString.charAt(0);
274 return firstChar >= '0' && firstChar <= '9' ? "_" + rawString : rawString;
278 * Returns the {@link String} {@code s} with an {@link Character#isUpperCase(char) upper case} first character.
280 * @param str the string that should get an upper case first character.
281 * @return the {@link String} {@code str} with an upper case first character.
283 private static @NonNull String toFirstUpper(final @NonNull String str) {
287 if (Character.isUpperCase(str.charAt(0))) {
290 if (str.length() == 1) {
291 return str.toUpperCase(Locale.ENGLISH);
293 return str.substring(0, 1).toUpperCase(Locale.ENGLISH) + str.substring(1);
297 * Returns the {@link String} {@code s} with a {@link Character#isLowerCase(char) lower case} first character. This
298 * function is null-safe.
300 * @param str the string that should get an lower case first character. May be <code>null</code>.
301 * @return the {@link String} {@code str} with an lower case first character or <code>null</code> if the input
302 * {@link String} {@code str} was empty.
304 private static @NonNull String toFirstLower(final @NonNull String str) {
308 if (Character.isLowerCase(str.charAt(0))) {
311 if (str.length() == 1) {
312 return str.toLowerCase(Locale.ENGLISH);
314 return str.substring(0, 1).toLowerCase(Locale.ENGLISH) + str.substring(1);
318 * Returns the {@link String} {@code s} with a '$' character as suffix.
320 * @param qname RPC QName
321 * @return The RPC method name as determined by considering the localname against the JLS.
322 * @throws NullPointerException if {@code qname} is null
324 public static @NonNull String getRpcMethodName(final @NonNull QName qname) {
325 final String methodName = getMethodName(qname);
326 return JAVA_RESERVED_WORDS.contains(methodName) ? methodName + "$" : methodName;
330 * Returns Java identifiers, conforming to JLS9 Section 3.8 to use for specified YANG assigned names
331 * (RFC7950 Section 9.6.4). This method considers two distinct encodings: one the pre-Fluorine mapping, which is
332 * okay and convenient for sane strings, and an escaping-based bijective mapping which works for all possible
335 * @param assignedNames Collection of assigned names
336 * @return A BiMap keyed by assigned name, with Java identifiers as values
337 * @throws NullPointerException if assignedNames is null or contains null items
338 * @throws IllegalArgumentException if any of the names is empty
340 public static BiMap<String, String> mapEnumAssignedNames(final Collection<String> assignedNames) {
342 * Original mapping assumed strings encountered are identifiers, hence it used getClassName to map the names
343 * and that function is not an injection -- this is evidenced in MDSAL-208 and results in a failure to compile
344 * generated code. If we encounter such a conflict or if the result is not a valid identifier (like '*'), we
345 * abort and switch the mapping schema to mapEnumAssignedName(), which is a bijection.
347 * Note that assignedNames can contain duplicates, which must not trigger a duplication fallback.
349 final BiMap<String, String> javaToYang = HashBiMap.create(assignedNames.size());
350 boolean valid = true;
351 for (String name : assignedNames) {
352 checkArgument(!name.isEmpty());
353 if (!javaToYang.containsValue(name)) {
354 final String mappedName = getClassName(name);
355 if (!isValidJavaIdentifier(mappedName) || javaToYang.forcePut(mappedName, name) != null) {
363 // Fall back to bijective mapping
365 for (String name : assignedNames) {
366 javaToYang.put(mapEnumAssignedName(name), name);
370 return javaToYang.inverse();
373 // See https://docs.oracle.com/javase/specs/jls/se9/html/jls-3.html#jls-3.8
374 private static boolean isValidJavaIdentifier(final String str) {
375 return !str.isEmpty() && !JAVA_RESERVED_WORDS.contains(str)
376 && Character.isJavaIdentifierStart(str.codePointAt(0))
377 && str.codePoints().skip(1).allMatch(Character::isJavaIdentifierPart);
380 private static String mapEnumAssignedName(final String assignedName) {
381 checkArgument(!assignedName.isEmpty());
384 // - if the string is a valid java identifier and does not contain '$', use it as-is
385 if (assignedName.indexOf('$') == -1 && isValidJavaIdentifier(assignedName)) {
389 // - otherwise prefix it with '$' and replace any invalid character (including '$') with '$XX$', where XX is
390 // hex-encoded unicode codepoint (including plane, stripping leading zeroes)
391 final StringBuilder sb = new StringBuilder().append('$');
392 assignedName.codePoints().forEachOrdered(codePoint -> {
393 if (codePoint == '$' || !Character.isJavaIdentifierPart(codePoint)) {
394 sb.append('$').append(Integer.toHexString(codePoint).toUpperCase(Locale.ROOT)).append('$');
396 sb.appendCodePoint(codePoint);
399 return sb.toString();