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
8 package org.opendaylight.mdsal.binding.javav2.java.api.generator.rangeGenerators;
10 import com.google.common.base.Preconditions;
11 import com.google.common.collect.Range;
12 import java.util.ArrayList;
13 import java.util.Collection;
15 import javax.annotation.Nonnull;
16 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
17 import org.slf4j.Logger;
18 import org.slf4j.LoggerFactory;
20 abstract class AbstractPrimitiveRangeGenerator<T extends Number & Comparable<T>> extends AbstractRangeGenerator<T> {
21 private static final Logger LOG = LoggerFactory.getLogger(AbstractPrimitiveRangeGenerator.class);
22 private final String primitiveName;
23 private final T minValue;
24 private final T maxValue;
26 protected AbstractPrimitiveRangeGenerator(final Class<T> typeClass, final String primitiveName, final T minValue, final T maxValue) {
28 this.primitiveName = Preconditions.checkNotNull(primitiveName);
29 this.minValue = Preconditions.checkNotNull(minValue);
30 this.maxValue = Preconditions.checkNotNull(maxValue);
34 * Return the name of the primitive type, as known by the Java language.
36 * @return Primitive type name
38 @Nonnull protected final String getPrimitiveName() {
42 private boolean needsMaximumEnforcement(final T maxToEnforce) {
43 return maxValue.compareTo(maxToEnforce) > 0;
46 private boolean needsMinimumEnforcement(final T minToEnforce) {
47 return minValue.compareTo(minToEnforce) < 0;
51 * Format a value into a Java-compilable 'greater equal' compare expression.
52 * The method would be overrided by {@link AbstractUnsignedIntegerRangeGenerator}.
54 * @param value Number value
55 * @return Java language compare string representation
57 @Nonnull protected String gtExpression(T value) {
58 return "value >= " + format(value);
62 * Format a value into a Java-compilable 'less equal' compare expression.
63 * The method would be overrided by {@link AbstractUnsignedIntegerRangeGenerator}.
65 * @param value Number value
66 * @return Java language compare string representation
68 @Nonnull protected String ltExpression(T value) {
69 return "value <= " + format(value);
72 private Collection<String> createExpressions(final RangeConstraint<?> constraint) {
73 final Set<? extends Range<? extends Number>> constraints = constraint.getAllowedRanges().asRanges();
74 final Collection<String> ret = new ArrayList<>(constraints.size());
76 for (Range<? extends Number> r : constraints) {
77 final T min = getValue(r.lowerEndpoint());
78 final boolean needMin = needsMinimumEnforcement(min);
80 final T max = getValue(r.upperEndpoint());
81 final boolean needMax = needsMaximumEnforcement(max);
83 if (!needMin && !needMax) {
84 LOG.debug("Type {} indicates [{}, {}] does not require enforcement", getTypeName(), min, max);
88 final StringBuilder sb = new StringBuilder();
90 sb.append(gtExpression(min));
96 sb.append(ltExpression(max));
99 ret.add(sb.toString());
105 private static String createRangeString(final RangeConstraint<?> constraints) {
106 return constraints.getAllowedRanges().toString();
110 protected final String generateRangeCheckerImplementation(final String checkerName,
111 final RangeConstraint<?> constraint) {
112 final StringBuilder sb = new StringBuilder();
113 final Collection<String> expressions = createExpressions(constraint);
115 sb.append("private static void ").append(checkerName).append("(final ").append(primitiveName).append(" value) {\n");
117 if (!expressions.isEmpty()) {
118 for (String exp : expressions) {
119 sb.append(" if (").append(exp).append(") {\n");
120 sb.append(" return;\n");
124 sb.append(" throw new IllegalArgumentException(String.format(\"Invalid range: %s, expected: ")
125 .append(createRangeString(constraint)).append(".\", value));\n");
130 return sb.toString();