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| 1 // Protocol Buffers - Google's data interchange format | |
| 2 // Copyright 2008 Google Inc. All rights reserved. | |
| 3 // https://developers.google.com/protocol-buffers/ | |
| 4 // | |
| 5 // Redistribution and use in source and binary forms, with or without | |
| 6 // modification, are permitted provided that the following conditions are | |
| 7 // met: | |
| 8 // | |
| 9 // * Redistributions of source code must retain the above copyright | |
| 10 // notice, this list of conditions and the following disclaimer. | |
| 11 // * Redistributions in binary form must reproduce the above | |
| 12 // copyright notice, this list of conditions and the following disclaimer | |
| 13 // in the documentation and/or other materials provided with the | |
| 14 // distribution. | |
| 15 // * Neither the name of Google Inc. nor the names of its | |
| 16 // contributors may be used to endorse or promote products derived from | |
| 17 // this software without specific prior written permission. | |
| 18 // | |
| 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 30 | |
| 31 package com.google.protobuf.util; | |
| 32 | |
| 33 import static com.google.common.base.Preconditions.checkArgument; | |
| 34 import static com.google.common.math.IntMath.checkedAdd; | |
| 35 import static com.google.common.math.IntMath.checkedSubtract; | |
| 36 import static com.google.common.math.LongMath.checkedAdd; | |
| 37 import static com.google.common.math.LongMath.checkedMultiply; | |
| 38 import static com.google.common.math.LongMath.checkedSubtract; | |
| 39 import static com.google.protobuf.util.Timestamps.MICROS_PER_SECOND; | |
| 40 import static com.google.protobuf.util.Timestamps.MILLIS_PER_SECOND; | |
| 41 import static com.google.protobuf.util.Timestamps.NANOS_PER_MICROSECOND; | |
| 42 import static com.google.protobuf.util.Timestamps.NANOS_PER_MILLISECOND; | |
| 43 import static com.google.protobuf.util.Timestamps.NANOS_PER_SECOND; | |
| 44 | |
| 45 import com.google.protobuf.Duration; | |
| 46 import java.text.ParseException; | |
| 47 import java.util.Comparator; | |
| 48 | |
| 49 /** | |
| 50 * Utilities to help create/manipulate {@code protobuf/duration.proto}. All oper
ations throw an | |
| 51 * {@link IllegalArgumentException} if the input(s) are not {@linkplain #isValid
(Duration) valid}. | |
| 52 */ | |
| 53 public final class Durations { | |
| 54 static final long DURATION_SECONDS_MIN = -315576000000L; | |
| 55 static final long DURATION_SECONDS_MAX = 315576000000L; | |
| 56 | |
| 57 /** A constant holding the minimum valid {@link Duration}, approximately {@cod
e -10,000} years. */ | |
| 58 public static final Duration MIN_VALUE = | |
| 59 Duration.newBuilder().setSeconds(DURATION_SECONDS_MIN).setNanos(-999999999
).build(); | |
| 60 | |
| 61 /** A constant holding the maximum valid {@link Duration}, approximately {@cod
e +10,000} years. */ | |
| 62 public static final Duration MAX_VALUE = | |
| 63 Duration.newBuilder().setSeconds(DURATION_SECONDS_MAX).setNanos(999999999)
.build(); | |
| 64 | |
| 65 private Durations() {} | |
| 66 | |
| 67 private static final Comparator<Duration> COMPARATOR = | |
| 68 new Comparator<Duration>() { | |
| 69 @Override | |
| 70 public int compare(Duration d1, Duration d2) { | |
| 71 checkValid(d1); | |
| 72 checkValid(d2); | |
| 73 int secDiff = Long.compare(d1.getSeconds(), d2.getSeconds()); | |
| 74 return (secDiff != 0) ? secDiff : Integer.compare(d1.getNanos(), d2.ge
tNanos()); | |
| 75 } | |
| 76 }; | |
| 77 | |
| 78 /** | |
| 79 * Returns a {@link Comparator} for {@link Duration}s which sorts in increasin
g chronological | |
| 80 * order. Nulls and invalid {@link Duration}s are not allowed (see {@link #isV
alid}). | |
| 81 */ | |
| 82 public static Comparator<Duration> comparator() { | |
| 83 return COMPARATOR; | |
| 84 } | |
| 85 | |
| 86 /** | |
| 87 * Returns true if the given {@link Duration} is valid. The {@code seconds} va
lue must be in the | |
| 88 * range [-315,576,000,000, +315,576,000,000]. The {@code nanos} value must be
in the range | |
| 89 * [-999,999,999, +999,999,999]. | |
| 90 * | |
| 91 * <p><b>Note:</b> Durations less than one second are represented with a 0 {@c
ode seconds} field | |
| 92 * and a positive or negative {@code nanos} field. For durations of one second
or more, a non-zero | |
| 93 * value for the {@code nanos} field must be of the same sign as the {@code se
conds} field. | |
| 94 */ | |
| 95 public static boolean isValid(Duration duration) { | |
| 96 return isValid(duration.getSeconds(), duration.getNanos()); | |
| 97 } | |
| 98 | |
| 99 /** | |
| 100 * Returns true if the given number of seconds and nanos is a valid {@link Dur
ation}. The {@code | |
| 101 * seconds} value must be in the range [-315,576,000,000, +315,576,000,000]. T
he {@code nanos} | |
| 102 * value must be in the range [-999,999,999, +999,999,999]. | |
| 103 * | |
| 104 * <p><b>Note:</b> Durations less than one second are represented with a 0 {@c
ode seconds} field | |
| 105 * and a positive or negative {@code nanos} field. For durations of one second
or more, a non-zero | |
| 106 * value for the {@code nanos} field must be of the same sign as the {@code se
conds} field. | |
| 107 */ | |
| 108 public static boolean isValid(long seconds, int nanos) { | |
| 109 if (seconds < DURATION_SECONDS_MIN || seconds > DURATION_SECONDS_MAX) { | |
| 110 return false; | |
| 111 } | |
| 112 if (nanos < -999999999L || nanos >= NANOS_PER_SECOND) { | |
| 113 return false; | |
| 114 } | |
| 115 if (seconds < 0 || nanos < 0) { | |
| 116 if (seconds > 0 || nanos > 0) { | |
| 117 return false; | |
| 118 } | |
| 119 } | |
| 120 return true; | |
| 121 } | |
| 122 | |
| 123 /** Throws an {@link IllegalArgumentException} if the given {@link Duration} i
s not valid. */ | |
| 124 public static Duration checkValid(Duration duration) { | |
| 125 long seconds = duration.getSeconds(); | |
| 126 int nanos = duration.getNanos(); | |
| 127 checkArgument( | |
| 128 isValid(seconds, nanos), | |
| 129 "Duration is not valid. See proto definition for valid values. " | |
| 130 + "Seconds (%s) must be in range [-315,576,000,000, +315,576,000,000
]. " | |
| 131 + "Nanos (%s) must be in range [-999,999,999, +999,999,999]. " | |
| 132 + "Nanos must have the same sign as seconds", | |
| 133 seconds, | |
| 134 nanos); | |
| 135 return duration; | |
| 136 } | |
| 137 | |
| 138 /** | |
| 139 * Convert Duration to string format. The string format will contains 3, 6, or
9 fractional digits | |
| 140 * depending on the precision required to represent the exact Duration value.
For example: "1s", | |
| 141 * "1.010s", "1.000000100s", "-3.100s" The range that can be represented by Du
ration is from | |
| 142 * -315,576,000,000 to +315,576,000,000 inclusive (in seconds). | |
| 143 * | |
| 144 * @return The string representation of the given duration. | |
| 145 * @throws IllegalArgumentException if the given duration is not in the valid
range. | |
| 146 */ | |
| 147 public static String toString(Duration duration) { | |
| 148 checkValid(duration); | |
| 149 | |
| 150 long seconds = duration.getSeconds(); | |
| 151 int nanos = duration.getNanos(); | |
| 152 | |
| 153 StringBuilder result = new StringBuilder(); | |
| 154 if (seconds < 0 || nanos < 0) { | |
| 155 result.append("-"); | |
| 156 seconds = -seconds; | |
| 157 nanos = -nanos; | |
| 158 } | |
| 159 result.append(seconds); | |
| 160 if (nanos != 0) { | |
| 161 result.append("."); | |
| 162 result.append(Timestamps.formatNanos(nanos)); | |
| 163 } | |
| 164 result.append("s"); | |
| 165 return result.toString(); | |
| 166 } | |
| 167 | |
| 168 /** | |
| 169 * Parse from a string to produce a duration. | |
| 170 * | |
| 171 * @return A Duration parsed from the string. | |
| 172 * @throws ParseException if parsing fails. | |
| 173 */ | |
| 174 public static Duration parse(String value) throws ParseException { | |
| 175 // Must ended with "s". | |
| 176 if (value.isEmpty() || value.charAt(value.length() - 1) != 's') { | |
| 177 throw new ParseException("Invalid duration string: " + value, 0); | |
| 178 } | |
| 179 boolean negative = false; | |
| 180 if (value.charAt(0) == '-') { | |
| 181 negative = true; | |
| 182 value = value.substring(1); | |
| 183 } | |
| 184 String secondValue = value.substring(0, value.length() - 1); | |
| 185 String nanoValue = ""; | |
| 186 int pointPosition = secondValue.indexOf('.'); | |
| 187 if (pointPosition != -1) { | |
| 188 nanoValue = secondValue.substring(pointPosition + 1); | |
| 189 secondValue = secondValue.substring(0, pointPosition); | |
| 190 } | |
| 191 long seconds = Long.parseLong(secondValue); | |
| 192 int nanos = nanoValue.isEmpty() ? 0 : Timestamps.parseNanos(nanoValue); | |
| 193 if (seconds < 0) { | |
| 194 throw new ParseException("Invalid duration string: " + value, 0); | |
| 195 } | |
| 196 if (negative) { | |
| 197 seconds = -seconds; | |
| 198 nanos = -nanos; | |
| 199 } | |
| 200 try { | |
| 201 return normalizedDuration(seconds, nanos); | |
| 202 } catch (IllegalArgumentException e) { | |
| 203 throw new ParseException("Duration value is out of range.", 0); | |
| 204 } | |
| 205 } | |
| 206 | |
| 207 /** Create a Duration from the number of seconds. */ | |
| 208 public static Duration fromSeconds(long seconds) { | |
| 209 return normalizedDuration(seconds, 0); | |
| 210 } | |
| 211 | |
| 212 /** | |
| 213 * Convert a Duration to the number of seconds. The result will be rounded tow
ards 0 to the | |
| 214 * nearest second. E.g., if the duration represents -1 nanosecond, it will be
rounded to 0. | |
| 215 */ | |
| 216 public static long toSeconds(Duration duration) { | |
| 217 return checkValid(duration).getSeconds(); | |
| 218 } | |
| 219 | |
| 220 /** Create a Duration from the number of milliseconds. */ | |
| 221 public static Duration fromMillis(long milliseconds) { | |
| 222 return normalizedDuration( | |
| 223 milliseconds / MILLIS_PER_SECOND, | |
| 224 (int) (milliseconds % MILLIS_PER_SECOND * NANOS_PER_MILLISECOND)); | |
| 225 } | |
| 226 | |
| 227 /** | |
| 228 * Convert a Duration to the number of milliseconds. The result will be rounde
d towards 0 to the | |
| 229 * nearest millisecond. E.g., if the duration represents -1 nanosecond, it wil
l be rounded to 0. | |
| 230 */ | |
| 231 public static long toMillis(Duration duration) { | |
| 232 checkValid(duration); | |
| 233 return checkedAdd( | |
| 234 checkedMultiply(duration.getSeconds(), MILLIS_PER_SECOND), | |
| 235 duration.getNanos() / NANOS_PER_MILLISECOND); | |
| 236 } | |
| 237 | |
| 238 /** Create a Duration from the number of microseconds. */ | |
| 239 public static Duration fromMicros(long microseconds) { | |
| 240 return normalizedDuration( | |
| 241 microseconds / MICROS_PER_SECOND, | |
| 242 (int) (microseconds % MICROS_PER_SECOND * NANOS_PER_MICROSECOND)); | |
| 243 } | |
| 244 | |
| 245 /** | |
| 246 * Convert a Duration to the number of microseconds. The result will be rounde
d towards 0 to the | |
| 247 * nearest microseconds. E.g., if the duration represents -1 nanosecond, it wi
ll be rounded to 0. | |
| 248 */ | |
| 249 public static long toMicros(Duration duration) { | |
| 250 checkValid(duration); | |
| 251 return checkedAdd( | |
| 252 checkedMultiply(duration.getSeconds(), MICROS_PER_SECOND), | |
| 253 duration.getNanos() / NANOS_PER_MICROSECOND); | |
| 254 } | |
| 255 | |
| 256 /** Create a Duration from the number of nanoseconds. */ | |
| 257 public static Duration fromNanos(long nanoseconds) { | |
| 258 return normalizedDuration( | |
| 259 nanoseconds / NANOS_PER_SECOND, (int) (nanoseconds % NANOS_PER_SECOND)); | |
| 260 } | |
| 261 | |
| 262 /** Convert a Duration to the number of nanoseconds. */ | |
| 263 public static long toNanos(Duration duration) { | |
| 264 checkValid(duration); | |
| 265 return checkedAdd( | |
| 266 checkedMultiply(duration.getSeconds(), NANOS_PER_SECOND), duration.getNa
nos()); | |
| 267 } | |
| 268 | |
| 269 /** Add two durations. */ | |
| 270 public static Duration add(Duration d1, Duration d2) { | |
| 271 checkValid(d1); | |
| 272 checkValid(d2); | |
| 273 return normalizedDuration( | |
| 274 checkedAdd(d1.getSeconds(), d2.getSeconds()), checkedAdd(d1.getNanos(),
d2.getNanos())); | |
| 275 } | |
| 276 | |
| 277 /** Subtract a duration from another. */ | |
| 278 public static Duration subtract(Duration d1, Duration d2) { | |
| 279 checkValid(d1); | |
| 280 checkValid(d2); | |
| 281 return normalizedDuration( | |
| 282 checkedSubtract(d1.getSeconds(), d2.getSeconds()), | |
| 283 checkedSubtract(d1.getNanos(), d2.getNanos())); | |
| 284 } | |
| 285 | |
| 286 static Duration normalizedDuration(long seconds, int nanos) { | |
| 287 if (nanos <= -NANOS_PER_SECOND || nanos >= NANOS_PER_SECOND) { | |
| 288 seconds = checkedAdd(seconds, nanos / NANOS_PER_SECOND); | |
| 289 nanos %= NANOS_PER_SECOND; | |
| 290 } | |
| 291 if (seconds > 0 && nanos < 0) { | |
| 292 nanos += NANOS_PER_SECOND; // no overflow since nanos is negative (and we'
re adding) | |
| 293 seconds--; // no overflow since seconds is positive (and we're decrementin
g) | |
| 294 } | |
| 295 if (seconds < 0 && nanos > 0) { | |
| 296 nanos -= NANOS_PER_SECOND; // no overflow since nanos is positive (and we'
re subtracting) | |
| 297 seconds++; // no overflow since seconds is negative (and we're incrementin
g) | |
| 298 } | |
| 299 Duration duration = Duration.newBuilder().setSeconds(seconds).setNanos(nanos
).build(); | |
| 300 return checkValid(duration); | |
| 301 } | |
| 302 } | |
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Chromium Code Reviews
Issue 2600753002:
Reverts third_party/protobuf: Update to HEAD (f52e188fe4) (Closed)
