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.range_generators;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.collect.Range;
13 import java.util.ArrayList;
14 import java.util.Collection;
16 import javax.annotation.Nonnull;
17 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
18 import org.slf4j.Logger;
19 import org.slf4j.LoggerFactory;
21 abstract class AbstractPrimitiveRangeGenerator<T extends Number & Comparable<T>> extends AbstractRangeGenerator<T> {
22 private static final Logger LOG = LoggerFactory.getLogger(AbstractPrimitiveRangeGenerator.class);
23 private final String primitiveName;
24 private final T minValue;
25 private final T maxValue;
27 protected AbstractPrimitiveRangeGenerator(final Class<T> typeClass, final String primitiveName, final T minValue,
30 this.primitiveName = requireNonNull(primitiveName);
31 this.minValue = requireNonNull(minValue);
32 this.maxValue = requireNonNull(maxValue);
36 * Return the name of the primitive type, as known by the Java language.
38 * @return Primitive type name
40 @Nonnull protected final String getPrimitiveName() {
44 private boolean needsMaximumEnforcement(final T maxToEnforce) {
45 return maxValue.compareTo(maxToEnforce) > 0;
48 private boolean needsMinimumEnforcement(final T minToEnforce) {
49 return minValue.compareTo(minToEnforce) < 0;
53 * Format a value into a Java-compilable 'greater equal' compare expression.
54 * The method would be overrided by {@link AbstractUnsignedIntegerRangeGenerator}.
56 * @param value Number value
57 * @return Java language compare string representation
59 @Nonnull protected String gtExpression(T value) {
60 return "value >= " + format(value);
64 * Format a value into a Java-compilable 'less equal' compare expression.
65 * The method would be overrided by {@link AbstractUnsignedIntegerRangeGenerator}.
67 * @param value Number value
68 * @return Java language compare string representation
70 @Nonnull protected String ltExpression(T value) {
71 return "value <= " + format(value);
74 private Collection<String> createExpressions(final RangeConstraint<?> constraint) {
75 final Set<? extends Range<? extends Number>> constraints = constraint.getAllowedRanges().asRanges();
76 final Collection<String> ret = new ArrayList<>(constraints.size());
78 for (Range<? extends Number> r : constraints) {
79 final T min = getValue(r.lowerEndpoint());
80 final boolean needMin = needsMinimumEnforcement(min);
82 final T max = getValue(r.upperEndpoint());
83 final boolean needMax = needsMaximumEnforcement(max);
85 if (!needMin && !needMax) {
86 LOG.debug("Type {} indicates [{}, {}] does not require enforcement", getTypeName(), min, max);
90 final StringBuilder sb = new StringBuilder();
92 sb.append(gtExpression(min));
98 sb.append(ltExpression(max));
101 ret.add(sb.toString());
107 private static String createRangeString(final RangeConstraint<?> constraints) {
108 return constraints.getAllowedRanges().toString();
112 protected final String generateRangeCheckerImplementation(final String checkerName,
113 final RangeConstraint<?> constraint) {
114 final StringBuilder sb = new StringBuilder();
115 final Collection<String> expressions = createExpressions(constraint);
117 sb.append("private static void ").append(checkerName).append("(final ").append(primitiveName)
118 .append(" value) {\n");
120 if (!expressions.isEmpty()) {
121 for (String exp : expressions) {
122 sb.append(" if (").append(exp).append(") {\n");
123 sb.append(" return;\n");
127 sb.append(" throw new IllegalArgumentException(String.format(\"Invalid range: %s, expected: ")
128 .append(createRangeString(constraint)).append(".\", value));\n");
133 return sb.toString();