2 * Copyright (c) 2017 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
9 package org.opendaylight.mdsal.binding.javav2.util;
11 import com.google.common.annotations.Beta;
12 import com.google.common.base.CharMatcher;
13 import com.google.common.base.Preconditions;
14 import com.google.common.base.Splitter;
15 import com.google.common.collect.ImmutableSet;
16 import com.google.common.collect.Interner;
17 import com.google.common.collect.Interners;
18 import java.text.SimpleDateFormat;
20 import java.util.regex.Matcher;
21 import java.util.regex.Pattern;
22 import org.opendaylight.mdsal.binding.javav2.spec.runtime.BindingNamespaceType;
23 import org.opendaylight.yangtools.yang.model.api.Module;
26 * Standard Util class that provides generated Java related functionality
29 public final class BindingMapping {
31 public static final Set<String> JAVA_RESERVED_WORDS = ImmutableSet.of("abstract", "assert", "boolean", "break",
32 "byte", "case", "catch", "char", "class", "const", "continue", "default", "double", "do", "else", "enum",
33 "extends", "false", "final", "finally", "float", "for", "goto", "if", "implements", "import", "instanceof",
34 "int", "interface", "long", "native", "new", "null", "package", "private", "protected", "public", "return",
35 "short", "static", "strictfp", "super", "switch", "synchronized", "this", "throw", "throws", "transient",
36 "true", "try", "void", "volatile", "while");
38 public static final String QNAME_STATIC_FIELD_NAME = "QNAME";
41 * Package prefix for Binding v2 generated Java code structures
43 public static final String PACKAGE_PREFIX = "org.opendaylight.mdsal.gen.javav2";
45 private static final Splitter DOT_SPLITTER = Splitter.on('.');
46 private static final Interner<String> PACKAGE_INTERNER = Interners.newWeakInterner();
47 private static final Splitter CAMEL_SPLITTER = Splitter.on(CharMatcher.anyOf(" _.-/").precomputed())
48 .omitEmptyStrings().trimResults();
49 private static final Pattern COLON_SLASH_SLASH = Pattern.compile("://", Pattern.LITERAL);
50 private static final String QUOTED_DOT = Matcher.quoteReplacement(".");
51 public static final String MODULE_INFO_CLASS_NAME = "$YangModuleInfoImpl";
52 public static final String MODEL_BINDING_PROVIDER_CLASS_NAME = "$YangModelBindingProvider";
53 public static final String PATTERN_CONSTANT_NAME = "PATTERN_CONSTANTS";
54 public static final String MEMBER_PATTERN_LIST = "patterns";
56 private static final ThreadLocal<SimpleDateFormat> PACKAGE_DATE_FORMAT = new ThreadLocal<SimpleDateFormat>() {
59 protected SimpleDateFormat initialValue() {
60 return new SimpleDateFormat("yyMMdd");
64 public void set(final SimpleDateFormat value) {
65 throw new UnsupportedOperationException();
69 private BindingMapping() {
70 throw new UnsupportedOperationException("Utility class");
73 public static String getRootPackageName(final Module module) {
74 Preconditions.checkArgument(module != null, "Module must not be null");
75 Preconditions.checkArgument(module.getRevision() != null, "Revision must not be null");
76 Preconditions.checkArgument(module.getNamespace() != null, "Namespace must not be null");
78 final StringBuilder packageNameBuilder = new StringBuilder();
79 packageNameBuilder.append(PACKAGE_PREFIX);
80 packageNameBuilder.append('.');
82 String namespace = module.getNamespace().toString();
83 namespace = COLON_SLASH_SLASH.matcher(namespace).replaceAll(QUOTED_DOT);
85 final char[] chars = namespace.toCharArray();
86 for (int i = 0; i < chars.length; ++i) {
103 // no-op, any other character is kept as it is
107 packageNameBuilder.append(chars);
108 if (chars[chars.length - 1] != '.') {
109 packageNameBuilder.append('.');
112 //TODO: per yangtools dev, semantic version not used yet
113 // final SemVer semVer = module.getSemanticVersion();
114 // if (semVer != null) {
115 // packageNameBuilder.append(semVer.toString());
117 // packageNameBuilder.append("rev");
118 // packageNameBuilder.append(PACKAGE_DATE_FORMAT.get().format(module.getRevision()));
121 packageNameBuilder.append("rev");
122 packageNameBuilder.append(PACKAGE_DATE_FORMAT.get().format(module.getRevision()));
124 //seems to be duplicate call, because normalizing is run again on full packagename + localName
125 //return normalizePackageName(packageNameBuilder.toString(), null);
126 return packageNameBuilder.toString();
130 * This method normalizes input package name to become valid package identifier
131 * and appends Binding v2 specific namespace type
133 * @param packageName package name
134 * @return normalized package name
136 public static String normalizePackageName(final String packageName) {
137 if (packageName == null) {
141 final StringBuilder builder = new StringBuilder();
142 boolean first = true;
144 for (String p : DOT_SPLITTER.split(packageName.toLowerCase())) {
151 //TODO: incorporate use of PackageNameNormalizer (impl in progress)
152 //TODO: to not to worry about various characters in identifiers,
153 //TODO: relying on https://docs.oracle.com/javase/tutorial/java/package/namingpkgs.html
155 //FIXME: delete this custom check when naming convention patch above is merged
156 if (Character.isDigit(p.charAt(0)) || BindingMapping.JAVA_RESERVED_WORDS.contains(p)) {
163 // Prevent duplication of input string
164 return PACKAGE_INTERNER.intern(builder.toString());
168 * Prepares valid Java class name
172 public static String getClassName(final String localName) {
173 Preconditions.checkArgument(localName != null, "Name should not be null.");
174 return toFirstUpper(toCamelCase(localName));
177 private static String toCamelCase(final String rawString) {
178 Preconditions.checkArgument(rawString != null, "String should not be null");
179 Iterable<String> components = CAMEL_SPLITTER.split(rawString);
180 StringBuilder builder = new StringBuilder();
181 for (String comp : components) {
182 builder.append(toFirstUpper(comp));
184 return checkNumericPrefix(builder.toString());
187 private static String checkNumericPrefix(final String rawString) {
188 if (rawString == null || rawString.isEmpty()) {
191 char firstChar = rawString.charAt(0);
192 if (firstChar >= '0' && firstChar <= '9') {
193 return "_" + rawString;
200 * Returns the {@link String} {@code s} with an
201 * {@link Character#isUpperCase(char) upper case} first character. This
202 * function is null-safe.
205 * the string that should get an upper case first character. May
206 * be <code>null</code>.
207 * @return the {@link String} {@code s} with an upper case first character
208 * or <code>null</code> if the input {@link String} {@code s} was
211 public static String toFirstUpper(final String s) {
212 if (s == null || s.length() == 0) {
215 if (Character.isUpperCase(s.charAt(0))) {
218 if (s.length() == 1) {
219 return s.toUpperCase();
221 return s.substring(0, 1).toUpperCase() + s.substring(1);
225 * Prepares Java property name for method getter code generation
226 * @param yangIdentifier given YANG element local name
227 * @return property name
229 public static String getPropertyName(final String yangIdentifier) {
230 final String potential = toFirstLower(toCamelCase(yangIdentifier));
231 if ("class".equals(potential)) {
238 * Returns the {@link String} {@code s} with an
239 * {@link Character#isLowerCase(char) lower case} first character. This
240 * function is null-safe.
243 * the string that should get an lower case first character. May
244 * be <code>null</code>.
245 * @return the {@link String} {@code s} with an lower case first character
246 * or <code>null</code> if the input {@link String} {@code s} was
249 private static String toFirstLower(final String s) {
250 if (s == null || s.length() == 0) {
253 if (Character.isLowerCase(s.charAt(0))) {
256 if (s.length() == 1) {
257 return s.toLowerCase();
259 return s.substring(0, 1).toLowerCase() + s.substring(1);
262 //TODO: further implementation of static util methods...