Index: third_party/protobuf/java/util/src/main/java/com/google/protobuf/util/Durations.java |
diff --git a/third_party/protobuf/java/util/src/main/java/com/google/protobuf/util/Durations.java b/third_party/protobuf/java/util/src/main/java/com/google/protobuf/util/Durations.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..46b2182865d2d95bf60a72b5277d30acefea3764 |
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@@ -0,0 +1,302 @@ |
+// Protocol Buffers - Google's data interchange format |
+// Copyright 2008 Google Inc. All rights reserved. |
+// https://developers.google.com/protocol-buffers/ |
+// |
+// Redistribution and use in source and binary forms, with or without |
+// modification, are permitted provided that the following conditions are |
+// met: |
+// |
+// * Redistributions of source code must retain the above copyright |
+// notice, this list of conditions and the following disclaimer. |
+// * Redistributions in binary form must reproduce the above |
+// copyright notice, this list of conditions and the following disclaimer |
+// in the documentation and/or other materials provided with the |
+// distribution. |
+// * Neither the name of Google Inc. nor the names of its |
+// contributors may be used to endorse or promote products derived from |
+// this software without specific prior written permission. |
+// |
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ |
+package com.google.protobuf.util; |
+ |
+import static com.google.common.base.Preconditions.checkArgument; |
+import static com.google.common.math.IntMath.checkedAdd; |
+import static com.google.common.math.IntMath.checkedSubtract; |
+import static com.google.common.math.LongMath.checkedAdd; |
+import static com.google.common.math.LongMath.checkedMultiply; |
+import static com.google.common.math.LongMath.checkedSubtract; |
+import static com.google.protobuf.util.Timestamps.MICROS_PER_SECOND; |
+import static com.google.protobuf.util.Timestamps.MILLIS_PER_SECOND; |
+import static com.google.protobuf.util.Timestamps.NANOS_PER_MICROSECOND; |
+import static com.google.protobuf.util.Timestamps.NANOS_PER_MILLISECOND; |
+import static com.google.protobuf.util.Timestamps.NANOS_PER_SECOND; |
+ |
+import com.google.protobuf.Duration; |
+import java.text.ParseException; |
+import java.util.Comparator; |
+ |
+/** |
+ * Utilities to help create/manipulate {@code protobuf/duration.proto}. All operations throw an |
+ * {@link IllegalArgumentException} if the input(s) are not {@linkplain #isValid(Duration) valid}. |
+ */ |
+public final class Durations { |
+ static final long DURATION_SECONDS_MIN = -315576000000L; |
+ static final long DURATION_SECONDS_MAX = 315576000000L; |
+ |
+ /** A constant holding the minimum valid {@link Duration}, approximately {@code -10,000} years. */ |
+ public static final Duration MIN_VALUE = |
+ Duration.newBuilder().setSeconds(DURATION_SECONDS_MIN).setNanos(-999999999).build(); |
+ |
+ /** A constant holding the maximum valid {@link Duration}, approximately {@code +10,000} years. */ |
+ public static final Duration MAX_VALUE = |
+ Duration.newBuilder().setSeconds(DURATION_SECONDS_MAX).setNanos(999999999).build(); |
+ |
+ private Durations() {} |
+ |
+ private static final Comparator<Duration> COMPARATOR = |
+ new Comparator<Duration>() { |
+ @Override |
+ public int compare(Duration d1, Duration d2) { |
+ checkValid(d1); |
+ checkValid(d2); |
+ int secDiff = Long.compare(d1.getSeconds(), d2.getSeconds()); |
+ return (secDiff != 0) ? secDiff : Integer.compare(d1.getNanos(), d2.getNanos()); |
+ } |
+ }; |
+ |
+ /** |
+ * Returns a {@link Comparator} for {@link Duration}s which sorts in increasing chronological |
+ * order. Nulls and invalid {@link Duration}s are not allowed (see {@link #isValid}). |
+ */ |
+ public static Comparator<Duration> comparator() { |
+ return COMPARATOR; |
+ } |
+ |
+ /** |
+ * Returns true if the given {@link Duration} is valid. The {@code seconds} value must be in the |
+ * range [-315,576,000,000, +315,576,000,000]. The {@code nanos} value must be in the range |
+ * [-999,999,999, +999,999,999]. |
+ * |
+ * <p><b>Note:</b> Durations less than one second are represented with a 0 {@code seconds} field |
+ * and a positive or negative {@code nanos} field. For durations of one second or more, a non-zero |
+ * value for the {@code nanos} field must be of the same sign as the {@code seconds} field. |
+ */ |
+ public static boolean isValid(Duration duration) { |
+ return isValid(duration.getSeconds(), duration.getNanos()); |
+ } |
+ |
+ /** |
+ * Returns true if the given number of seconds and nanos is a valid {@link Duration}. The {@code |
+ * seconds} value must be in the range [-315,576,000,000, +315,576,000,000]. The {@code nanos} |
+ * value must be in the range [-999,999,999, +999,999,999]. |
+ * |
+ * <p><b>Note:</b> Durations less than one second are represented with a 0 {@code seconds} field |
+ * and a positive or negative {@code nanos} field. For durations of one second or more, a non-zero |
+ * value for the {@code nanos} field must be of the same sign as the {@code seconds} field. |
+ */ |
+ public static boolean isValid(long seconds, int nanos) { |
+ if (seconds < DURATION_SECONDS_MIN || seconds > DURATION_SECONDS_MAX) { |
+ return false; |
+ } |
+ if (nanos < -999999999L || nanos >= NANOS_PER_SECOND) { |
+ return false; |
+ } |
+ if (seconds < 0 || nanos < 0) { |
+ if (seconds > 0 || nanos > 0) { |
+ return false; |
+ } |
+ } |
+ return true; |
+ } |
+ |
+ /** Throws an {@link IllegalArgumentException} if the given {@link Duration} is not valid. */ |
+ public static Duration checkValid(Duration duration) { |
+ long seconds = duration.getSeconds(); |
+ int nanos = duration.getNanos(); |
+ checkArgument( |
+ isValid(seconds, nanos), |
+ "Duration is not valid. See proto definition for valid values. " |
+ + "Seconds (%s) must be in range [-315,576,000,000, +315,576,000,000]. " |
+ + "Nanos (%s) must be in range [-999,999,999, +999,999,999]. " |
+ + "Nanos must have the same sign as seconds", |
+ seconds, |
+ nanos); |
+ return duration; |
+ } |
+ |
+ /** |
+ * Convert Duration to string format. The string format will contains 3, 6, or 9 fractional digits |
+ * depending on the precision required to represent the exact Duration value. For example: "1s", |
+ * "1.010s", "1.000000100s", "-3.100s" The range that can be represented by Duration is from |
+ * -315,576,000,000 to +315,576,000,000 inclusive (in seconds). |
+ * |
+ * @return The string representation of the given duration. |
+ * @throws IllegalArgumentException if the given duration is not in the valid range. |
+ */ |
+ public static String toString(Duration duration) { |
+ checkValid(duration); |
+ |
+ long seconds = duration.getSeconds(); |
+ int nanos = duration.getNanos(); |
+ |
+ StringBuilder result = new StringBuilder(); |
+ if (seconds < 0 || nanos < 0) { |
+ result.append("-"); |
+ seconds = -seconds; |
+ nanos = -nanos; |
+ } |
+ result.append(seconds); |
+ if (nanos != 0) { |
+ result.append("."); |
+ result.append(Timestamps.formatNanos(nanos)); |
+ } |
+ result.append("s"); |
+ return result.toString(); |
+ } |
+ |
+ /** |
+ * Parse from a string to produce a duration. |
+ * |
+ * @return A Duration parsed from the string. |
+ * @throws ParseException if parsing fails. |
+ */ |
+ public static Duration parse(String value) throws ParseException { |
+ // Must ended with "s". |
+ if (value.isEmpty() || value.charAt(value.length() - 1) != 's') { |
+ throw new ParseException("Invalid duration string: " + value, 0); |
+ } |
+ boolean negative = false; |
+ if (value.charAt(0) == '-') { |
+ negative = true; |
+ value = value.substring(1); |
+ } |
+ String secondValue = value.substring(0, value.length() - 1); |
+ String nanoValue = ""; |
+ int pointPosition = secondValue.indexOf('.'); |
+ if (pointPosition != -1) { |
+ nanoValue = secondValue.substring(pointPosition + 1); |
+ secondValue = secondValue.substring(0, pointPosition); |
+ } |
+ long seconds = Long.parseLong(secondValue); |
+ int nanos = nanoValue.isEmpty() ? 0 : Timestamps.parseNanos(nanoValue); |
+ if (seconds < 0) { |
+ throw new ParseException("Invalid duration string: " + value, 0); |
+ } |
+ if (negative) { |
+ seconds = -seconds; |
+ nanos = -nanos; |
+ } |
+ try { |
+ return normalizedDuration(seconds, nanos); |
+ } catch (IllegalArgumentException e) { |
+ throw new ParseException("Duration value is out of range.", 0); |
+ } |
+ } |
+ |
+ /** Create a Duration from the number of seconds. */ |
+ public static Duration fromSeconds(long seconds) { |
+ return normalizedDuration(seconds, 0); |
+ } |
+ |
+ /** |
+ * Convert a Duration to the number of seconds. The result will be rounded towards 0 to the |
+ * nearest second. E.g., if the duration represents -1 nanosecond, it will be rounded to 0. |
+ */ |
+ public static long toSeconds(Duration duration) { |
+ return checkValid(duration).getSeconds(); |
+ } |
+ |
+ /** Create a Duration from the number of milliseconds. */ |
+ public static Duration fromMillis(long milliseconds) { |
+ return normalizedDuration( |
+ milliseconds / MILLIS_PER_SECOND, |
+ (int) (milliseconds % MILLIS_PER_SECOND * NANOS_PER_MILLISECOND)); |
+ } |
+ |
+ /** |
+ * Convert a Duration to the number of milliseconds. The result will be rounded towards 0 to the |
+ * nearest millisecond. E.g., if the duration represents -1 nanosecond, it will be rounded to 0. |
+ */ |
+ public static long toMillis(Duration duration) { |
+ checkValid(duration); |
+ return checkedAdd( |
+ checkedMultiply(duration.getSeconds(), MILLIS_PER_SECOND), |
+ duration.getNanos() / NANOS_PER_MILLISECOND); |
+ } |
+ |
+ /** Create a Duration from the number of microseconds. */ |
+ public static Duration fromMicros(long microseconds) { |
+ return normalizedDuration( |
+ microseconds / MICROS_PER_SECOND, |
+ (int) (microseconds % MICROS_PER_SECOND * NANOS_PER_MICROSECOND)); |
+ } |
+ |
+ /** |
+ * Convert a Duration to the number of microseconds. The result will be rounded towards 0 to the |
+ * nearest microseconds. E.g., if the duration represents -1 nanosecond, it will be rounded to 0. |
+ */ |
+ public static long toMicros(Duration duration) { |
+ checkValid(duration); |
+ return checkedAdd( |
+ checkedMultiply(duration.getSeconds(), MICROS_PER_SECOND), |
+ duration.getNanos() / NANOS_PER_MICROSECOND); |
+ } |
+ |
+ /** Create a Duration from the number of nanoseconds. */ |
+ public static Duration fromNanos(long nanoseconds) { |
+ return normalizedDuration( |
+ nanoseconds / NANOS_PER_SECOND, (int) (nanoseconds % NANOS_PER_SECOND)); |
+ } |
+ |
+ /** Convert a Duration to the number of nanoseconds. */ |
+ public static long toNanos(Duration duration) { |
+ checkValid(duration); |
+ return checkedAdd( |
+ checkedMultiply(duration.getSeconds(), NANOS_PER_SECOND), duration.getNanos()); |
+ } |
+ |
+ /** Add two durations. */ |
+ public static Duration add(Duration d1, Duration d2) { |
+ checkValid(d1); |
+ checkValid(d2); |
+ return normalizedDuration( |
+ checkedAdd(d1.getSeconds(), d2.getSeconds()), checkedAdd(d1.getNanos(), d2.getNanos())); |
+ } |
+ |
+ /** Subtract a duration from another. */ |
+ public static Duration subtract(Duration d1, Duration d2) { |
+ checkValid(d1); |
+ checkValid(d2); |
+ return normalizedDuration( |
+ checkedSubtract(d1.getSeconds(), d2.getSeconds()), |
+ checkedSubtract(d1.getNanos(), d2.getNanos())); |
+ } |
+ |
+ static Duration normalizedDuration(long seconds, int nanos) { |
+ if (nanos <= -NANOS_PER_SECOND || nanos >= NANOS_PER_SECOND) { |
+ seconds = checkedAdd(seconds, nanos / NANOS_PER_SECOND); |
+ nanos %= NANOS_PER_SECOND; |
+ } |
+ if (seconds > 0 && nanos < 0) { |
+ nanos += NANOS_PER_SECOND; // no overflow since nanos is negative (and we're adding) |
+ seconds--; // no overflow since seconds is positive (and we're decrementing) |
+ } |
+ if (seconds < 0 && nanos > 0) { |
+ nanos -= NANOS_PER_SECOND; // no overflow since nanos is positive (and we're subtracting) |
+ seconds++; // no overflow since seconds is negative (and we're incrementing) |
+ } |
+ Duration duration = Duration.newBuilder().setSeconds(seconds).setNanos(nanos).build(); |
+ return checkValid(duration); |
+ } |
+} |