2 * Copyright (c) 2014 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.dom.codec.gen.spi;
10 import com.google.common.collect.Iterators;
11 import com.google.common.collect.UnmodifiableIterator;
12 import java.util.Collections;
13 import java.util.HashSet;
14 import java.util.Iterator;
16 import org.opendaylight.mdsal.binding.model.api.Type;
18 // FIXME: 5.0.0: consider optimizing streaming use through returning StringBuilder from common methods
19 public abstract class AbstractSource {
20 private final Set<StaticConstantDefinition> staticConstants = new HashSet<>();
22 public final <T> void staticConstant(final String name, final Class<T> type, final T value) {
23 staticConstants.add(new StaticConstantDefinition(name, type, value));
26 public final Set<StaticConstantDefinition> getStaticConstants() {
27 return Collections.unmodifiableSet(staticConstants);
30 private static StringBuilder commonInvoke(final CharSequence object, final String methodName) {
31 final StringBuilder sb = new StringBuilder();
33 sb.append(object).append('.');
35 return sb.append(methodName).append('(');
38 protected static final CharSequence invoke(final CharSequence object, final String methodName, final Object arg) {
39 return commonInvoke(object, methodName).append(arg).append(')');
42 protected static final CharSequence invoke(final CharSequence object, final String methodName,
43 final Object... args) {
44 final StringBuilder sb = commonInvoke(object, methodName);
46 final UnmodifiableIterator<Object> iterator = Iterators.forArray(args);
47 while (iterator.hasNext()) {
48 sb.append(iterator.next());
49 if (iterator.hasNext()) {
53 return sb.append(')');
56 protected static final CharSequence assign(final String var, final CharSequence value) {
57 return assign((String) null, var, value);
60 protected static final CharSequence assign(final String type, final String var, final CharSequence value) {
61 final StringBuilder sb = new StringBuilder();
63 sb.append(type).append(' ');
65 return sb.append(var).append(" = ").append(value);
68 protected static final CharSequence assign(final Class<?> type, final String var, final CharSequence value) {
69 return assign(type.getName(), var, value);
72 protected static final CharSequence assign(final Type type, final String var, final CharSequence value) {
73 return assign(type.getFullyQualifiedName(), var, value);
76 protected static final CharSequence cast(final Class<?> type, final CharSequence value) {
77 return cast(type.getName(), value);
80 protected static final CharSequence cast(final Type type, final CharSequence value) {
81 return cast(type.getFullyQualifiedName(), value);
84 protected static final CharSequence cast(final String type, final CharSequence value) {
85 return "((" + type + ") " + value + ')';
88 protected static final CharSequence forEach(final String iterable, final String iteratorName,
89 final String valueType, final String valueName, final CharSequence body) {
90 return new StringBuilder()
91 .append(statement(assign(Iterator.class, iteratorName, invoke(iterable, "iterator"))))
92 .append("while (").append(invoke(iteratorName, "hasNext")).append(") {\n")
93 .append(statement(assign(valueType, valueName, cast(valueType, invoke(iteratorName, "next")))))
98 protected static final CharSequence statement(final CharSequence statement) {
99 return new StringBuilder(statement).append(";\n");