diff options
Diffstat (limited to 'src/main/java/org/whispersystems/libaxolotl/util/guava')
6 files changed, 0 insertions, 951 deletions
diff --git a/src/main/java/org/whispersystems/libaxolotl/util/guava/Absent.java b/src/main/java/org/whispersystems/libaxolotl/util/guava/Absent.java deleted file mode 100644 index bd06ded9..00000000 --- a/src/main/java/org/whispersystems/libaxolotl/util/guava/Absent.java +++ /dev/null @@ -1,87 +0,0 @@ -/* - * Copyright (C) 2011 The Guava Authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.whispersystems.libaxolotl.util.guava; - -import static org.whispersystems.libaxolotl.util.guava.Preconditions.checkNotNull; - - - -import java.util.Collections; -import java.util.Set; - - -/** - * Implementation of an {@link Optional} not containing a reference. - */ - -final class Absent extends Optional<Object> { - static final Absent INSTANCE = new Absent(); - - @Override public boolean isPresent() { - return false; - } - - @Override public Object get() { - throw new IllegalStateException("value is absent"); - } - - @Override public Object or(Object defaultValue) { - return checkNotNull(defaultValue, "use orNull() instead of or(null)"); - } - - @SuppressWarnings("unchecked") // safe covariant cast - @Override public Optional<Object> or(Optional<?> secondChoice) { - return (Optional) checkNotNull(secondChoice); - } - - @Override public Object or(Supplier<?> supplier) { - return checkNotNull(supplier.get(), - "use orNull() instead of a Supplier that returns null"); - } - - @Override public Object orNull() { - return null; - } - - @Override public Set<Object> asSet() { - return Collections.emptySet(); - } - - @Override - public <V> Optional<V> transform(Function<? super Object, V> function) { - checkNotNull(function); - return Optional.absent(); - } - - @Override public boolean equals(Object object) { - return object == this; - } - - @Override public int hashCode() { - return 0x598df91c; - } - - @Override public String toString() { - return "Optional.absent()"; - } - - private Object readResolve() { - return INSTANCE; - } - - private static final long serialVersionUID = 0; -} diff --git a/src/main/java/org/whispersystems/libaxolotl/util/guava/Function.java b/src/main/java/org/whispersystems/libaxolotl/util/guava/Function.java deleted file mode 100644 index 1ad516c5..00000000 --- a/src/main/java/org/whispersystems/libaxolotl/util/guava/Function.java +++ /dev/null @@ -1,61 +0,0 @@ -/* - * Copyright (C) 2007 The Guava Authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.whispersystems.libaxolotl.util.guava; - - - -/** - * Determines an output value based on an input value. - * - * <p>See the Guava User Guide article on <a href= - * "http://code.google.com/p/guava-libraries/wiki/FunctionalExplained">the use of {@code - * Function}</a>. - * - * @author Kevin Bourrillion - * @since 2.0 (imported from Google Collections Library) - */ - -public interface Function<F, T> { - /** - * Returns the result of applying this function to {@code input}. This method is <i>generally - * expected</i>, but not absolutely required, to have the following properties: - * - * <ul> - * <li>Its execution does not cause any observable side effects. - * <li>The computation is <i>consistent with equals</i>; that is, {@link Objects#equal - * Objects.equal}{@code (a, b)} implies that {@code Objects.equal(function.apply(a), - * function.apply(b))}. - * </ul> - * - * @throws NullPointerException if {@code input} is null and this function does not accept null - * arguments - */ - T apply(F input); - - /** - * Indicates whether another object is equal to this function. - * - * <p>Most implementations will have no reason to override the behavior of {@link Object#equals}. - * However, an implementation may also choose to return {@code true} whenever {@code object} is a - * {@link Function} that it considers <i>interchangeable</i> with this one. "Interchangeable" - * <i>typically</i> means that {@code Objects.equal(this.apply(f), that.apply(f))} is true for all - * {@code f} of type {@code F}. Note that a {@code false} result from this method does not imply - * that the functions are known <i>not</i> to be interchangeable. - */ - @Override - boolean equals(Object object); -} diff --git a/src/main/java/org/whispersystems/libaxolotl/util/guava/Optional.java b/src/main/java/org/whispersystems/libaxolotl/util/guava/Optional.java deleted file mode 100644 index 4f2de832..00000000 --- a/src/main/java/org/whispersystems/libaxolotl/util/guava/Optional.java +++ /dev/null @@ -1,232 +0,0 @@ -/* - * Copyright (C) 2011 The Guava Authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.whispersystems.libaxolotl.util.guava; - -import static org.whispersystems.libaxolotl.util.guava.Preconditions.checkNotNull; - -import java.io.Serializable; -import java.util.Iterator; -import java.util.Set; - - -/** - * An immutable object that may contain a non-null reference to another object. Each - * instance of this type either contains a non-null reference, or contains nothing (in - * which case we say that the reference is "absent"); it is never said to "contain {@code - * null}". - * - * <p>A non-null {@code Optional<T>} reference can be used as a replacement for a nullable - * {@code T} reference. It allows you to represent "a {@code T} that must be present" and - * a "a {@code T} that might be absent" as two distinct types in your program, which can - * aid clarity. - * - * <p>Some uses of this class include - * - * <ul> - * <li>As a method return type, as an alternative to returning {@code null} to indicate - * that no value was available - * <li>To distinguish between "unknown" (for example, not present in a map) and "known to - * have no value" (present in the map, with value {@code Optional.absent()}) - * <li>To wrap nullable references for storage in a collection that does not support - * {@code null} (though there are - * <a href="http://code.google.com/p/guava-libraries/wiki/LivingWithNullHostileCollections"> - * several other approaches to this</a> that should be considered first) - * </ul> - * - * <p>A common alternative to using this class is to find or create a suitable - * <a href="http://en.wikipedia.org/wiki/Null_Object_pattern">null object</a> for the - * type in question. - * - * <p>This class is not intended as a direct analogue of any existing "option" or "maybe" - * construct from other programming environments, though it may bear some similarities. - * - * <p>See the Guava User Guide article on <a - * href="http://code.google.com/p/guava-libraries/wiki/UsingAndAvoidingNullExplained#Optional"> - * using {@code Optional}</a>. - * - * @param <T> the type of instance that can be contained. {@code Optional} is naturally - * covariant on this type, so it is safe to cast an {@code Optional<T>} to {@code - * Optional<S>} for any supertype {@code S} of {@code T}. - * @author Kurt Alfred Kluever - * @author Kevin Bourrillion - * @since 10.0 - */ -public abstract class Optional<T> implements Serializable { - /** - * Returns an {@code Optional} instance with no contained reference. - */ - @SuppressWarnings("unchecked") - public static <T> Optional<T> absent() { - return (Optional<T>) Absent.INSTANCE; - } - - /** - * Returns an {@code Optional} instance containing the given non-null reference. - */ - public static <T> Optional<T> of(T reference) { - return new Present<T>(checkNotNull(reference)); - } - - /** - * If {@code nullableReference} is non-null, returns an {@code Optional} instance containing that - * reference; otherwise returns {@link Optional#absent}. - */ - public static <T> Optional<T> fromNullable(T nullableReference) { - return (nullableReference == null) - ? Optional.<T>absent() - : new Present<T>(nullableReference); - } - - Optional() {} - - /** - * Returns {@code true} if this holder contains a (non-null) instance. - */ - public abstract boolean isPresent(); - - /** - * Returns the contained instance, which must be present. If the instance might be - * absent, use {@link #or(Object)} or {@link #orNull} instead. - * - * @throws IllegalStateException if the instance is absent ({@link #isPresent} returns - * {@code false}) - */ - public abstract T get(); - - /** - * Returns the contained instance if it is present; {@code defaultValue} otherwise. If - * no default value should be required because the instance is known to be present, use - * {@link #get()} instead. For a default value of {@code null}, use {@link #orNull}. - * - * <p>Note about generics: The signature {@code public T or(T defaultValue)} is overly - * restrictive. However, the ideal signature, {@code public <S super T> S or(S)}, is not legal - * Java. As a result, some sensible operations involving subtypes are compile errors: - * <pre> {@code - * - * Optional<Integer> optionalInt = getSomeOptionalInt(); - * Number value = optionalInt.or(0.5); // error - * - * FluentIterable<? extends Number> numbers = getSomeNumbers(); - * Optional<? extends Number> first = numbers.first(); - * Number value = first.or(0.5); // error}</pre> - * - * As a workaround, it is always safe to cast an {@code Optional<? extends T>} to {@code - * Optional<T>}. Casting either of the above example {@code Optional} instances to {@code - * Optional<Number>} (where {@code Number} is the desired output type) solves the problem: - * <pre> {@code - * - * Optional<Number> optionalInt = (Optional) getSomeOptionalInt(); - * Number value = optionalInt.or(0.5); // fine - * - * FluentIterable<? extends Number> numbers = getSomeNumbers(); - * Optional<Number> first = (Optional) numbers.first(); - * Number value = first.or(0.5); // fine}</pre> - */ - public abstract T or(T defaultValue); - - /** - * Returns this {@code Optional} if it has a value present; {@code secondChoice} - * otherwise. - */ - public abstract Optional<T> or(Optional<? extends T> secondChoice); - - /** - * Returns the contained instance if it is present; {@code supplier.get()} otherwise. If the - * supplier returns {@code null}, a {@link NullPointerException} is thrown. - * - * @throws NullPointerException if the supplier returns {@code null} - */ - public abstract T or(Supplier<? extends T> supplier); - - /** - * Returns the contained instance if it is present; {@code null} otherwise. If the - * instance is known to be present, use {@link #get()} instead. - */ - public abstract T orNull(); - - /** - * Returns an immutable singleton {@link Set} whose only element is the contained instance - * if it is present; an empty immutable {@link Set} otherwise. - * - * @since 11.0 - */ - public abstract Set<T> asSet(); - - /** - * If the instance is present, it is transformed with the given {@link Function}; otherwise, - * {@link Optional#absent} is returned. If the function returns {@code null}, a - * {@link NullPointerException} is thrown. - * - * @throws NullPointerException if the function returns {@code null} - * - * @since 12.0 - */ - - public abstract <V> Optional<V> transform(Function<? super T, V> function); - - /** - * Returns {@code true} if {@code object} is an {@code Optional} instance, and either - * the contained references are {@linkplain Object#equals equal} to each other or both - * are absent. Note that {@code Optional} instances of differing parameterized types can - * be equal. - */ - @Override public abstract boolean equals(Object object); - - /** - * Returns a hash code for this instance. - */ - @Override public abstract int hashCode(); - - /** - * Returns a string representation for this instance. The form of this string - * representation is unspecified. - */ - @Override public abstract String toString(); - - /** - * Returns the value of each present instance from the supplied {@code optionals}, in order, - * skipping over occurrences of {@link Optional#absent}. Iterators are unmodifiable and are - * evaluated lazily. - * - * @since 11.0 (generics widened in 13.0) - */ - -// public static <T> Iterable<T> presentInstances( -// final Iterable<? extends Optional<? extends T>> optionals) { -// checkNotNull(optionals); -// return new Iterable<T>() { -// @Override public Iterator<T> iterator() { -// return new AbstractIterator<T>() { -// private final Iterator<? extends Optional<? extends T>> iterator = -// checkNotNull(optionals.iterator()); -// -// @Override protected T computeNext() { -// while (iterator.hasNext()) { -// Optional<? extends T> optional = iterator.next(); -// if (optional.isPresent()) { -// return optional.get(); -// } -// } -// return endOfData(); -// } -// }; -// }; -// }; -// } - - private static final long serialVersionUID = 0; -} diff --git a/src/main/java/org/whispersystems/libaxolotl/util/guava/Preconditions.java b/src/main/java/org/whispersystems/libaxolotl/util/guava/Preconditions.java deleted file mode 100644 index ce253c65..00000000 --- a/src/main/java/org/whispersystems/libaxolotl/util/guava/Preconditions.java +++ /dev/null @@ -1,447 +0,0 @@ -/* - * Copyright (C) 2007 The Guava Authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.whispersystems.libaxolotl.util.guava; - - -import java.util.NoSuchElementException; - - - -/** - * Simple static methods to be called at the start of your own methods to verify - * correct arguments and state. This allows constructs such as - * <pre> - * if (count <= 0) { - * throw new IllegalArgumentException("must be positive: " + count); - * }</pre> - * - * to be replaced with the more compact - * <pre> - * checkArgument(count > 0, "must be positive: %s", count);</pre> - * - * Note that the sense of the expression is inverted; with {@code Preconditions} - * you declare what you expect to be <i>true</i>, just as you do with an - * <a href="http://java.sun.com/j2se/1.5.0/docs/guide/language/assert.html"> - * {@code assert}</a> or a JUnit {@code assertTrue} call. - * - * <p><b>Warning:</b> only the {@code "%s"} specifier is recognized as a - * placeholder in these messages, not the full range of {@link - * String#format(String, Object[])} specifiers. - * - * <p>Take care not to confuse precondition checking with other similar types - * of checks! Precondition exceptions -- including those provided here, but also - * {@link IndexOutOfBoundsException}, {@link NoSuchElementException}, {@link - * UnsupportedOperationException} and others -- are used to signal that the - * <i>calling method</i> has made an error. This tells the caller that it should - * not have invoked the method when it did, with the arguments it did, or - * perhaps ever. Postcondition or other invariant failures should not throw - * these types of exceptions. - * - * <p>See the Guava User Guide on <a href= - * "http://code.google.com/p/guava-libraries/wiki/PreconditionsExplained"> - * using {@code Preconditions}</a>. - * - * @author Kevin Bourrillion - * @since 2.0 (imported from Google Collections Library) - */ - -public final class Preconditions { - private Preconditions() {} - - /** - * Ensures the truth of an expression involving one or more parameters to the - * calling method. - * - * @param expression a boolean expression - * @throws IllegalArgumentException if {@code expression} is false - */ - public static void checkArgument(boolean expression) { - if (!expression) { - throw new IllegalArgumentException(); - } - } - - /** - * Ensures the truth of an expression involving one or more parameters to the - * calling method. - * - * @param expression a boolean expression - * @param errorMessage the exception message to use if the check fails; will - * be converted to a string using {@link String#valueOf(Object)} - * @throws IllegalArgumentException if {@code expression} is false - */ - public static void checkArgument( - boolean expression, Object errorMessage) { - if (!expression) { - throw new IllegalArgumentException(String.valueOf(errorMessage)); - } - } - - /** - * Ensures the truth of an expression involving one or more parameters to the - * calling method. - * - * @param expression a boolean expression - * @param errorMessageTemplate a template for the exception message should the - * check fail. The message is formed by replacing each {@code %s} - * placeholder in the template with an argument. These are matched by - * position - the first {@code %s} gets {@code errorMessageArgs[0]}, etc. - * Unmatched arguments will be appended to the formatted message in square - * braces. Unmatched placeholders will be left as-is. - * @param errorMessageArgs the arguments to be substituted into the message - * template. Arguments are converted to strings using - * {@link String#valueOf(Object)}. - * @throws IllegalArgumentException if {@code expression} is false - * @throws NullPointerException if the check fails and either {@code - * errorMessageTemplate} or {@code errorMessageArgs} is null (don't let - * this happen) - */ - public static void checkArgument(boolean expression, - String errorMessageTemplate, - Object... errorMessageArgs) { - if (!expression) { - throw new IllegalArgumentException( - format(errorMessageTemplate, errorMessageArgs)); - } - } - - /** - * Ensures the truth of an expression involving the state of the calling - * instance, but not involving any parameters to the calling method. - * - * @param expression a boolean expression - * @throws IllegalStateException if {@code expression} is false - */ - public static void checkState(boolean expression) { - if (!expression) { - throw new IllegalStateException(); - } - } - - /** - * Ensures the truth of an expression involving the state of the calling - * instance, but not involving any parameters to the calling method. - * - * @param expression a boolean expression - * @param errorMessage the exception message to use if the check fails; will - * be converted to a string using {@link String#valueOf(Object)} - * @throws IllegalStateException if {@code expression} is false - */ - public static void checkState( - boolean expression, Object errorMessage) { - if (!expression) { - throw new IllegalStateException(String.valueOf(errorMessage)); - } - } - - /** - * Ensures the truth of an expression involving the state of the calling - * instance, but not involving any parameters to the calling method. - * - * @param expression a boolean expression - * @param errorMessageTemplate a template for the exception message should the - * check fail. The message is formed by replacing each {@code %s} - * placeholder in the template with an argument. These are matched by - * position - the first {@code %s} gets {@code errorMessageArgs[0]}, etc. - * Unmatched arguments will be appended to the formatted message in square - * braces. Unmatched placeholders will be left as-is. - * @param errorMessageArgs the arguments to be substituted into the message - * template. Arguments are converted to strings using - * {@link String#valueOf(Object)}. - * @throws IllegalStateException if {@code expression} is false - * @throws NullPointerException if the check fails and either {@code - * errorMessageTemplate} or {@code errorMessageArgs} is null (don't let - * this happen) - */ - public static void checkState(boolean expression, - String errorMessageTemplate, - Object... errorMessageArgs) { - if (!expression) { - throw new IllegalStateException( - format(errorMessageTemplate, errorMessageArgs)); - } - } - - /** - * Ensures that an object reference passed as a parameter to the calling - * method is not null. - * - * @param reference an object reference - * @return the non-null reference that was validated - * @throws NullPointerException if {@code reference} is null - */ - public static <T> T checkNotNull(T reference) { - if (reference == null) { - throw new NullPointerException(); - } - return reference; - } - - /** - * Ensures that an object reference passed as a parameter to the calling - * method is not null. - * - * @param reference an object reference - * @param errorMessage the exception message to use if the check fails; will - * be converted to a string using {@link String#valueOf(Object)} - * @return the non-null reference that was validated - * @throws NullPointerException if {@code reference} is null - */ - public static <T> T checkNotNull(T reference, Object errorMessage) { - if (reference == null) { - throw new NullPointerException(String.valueOf(errorMessage)); - } - return reference; - } - - /** - * Ensures that an object reference passed as a parameter to the calling - * method is not null. - * - * @param reference an object reference - * @param errorMessageTemplate a template for the exception message should the - * check fail. The message is formed by replacing each {@code %s} - * placeholder in the template with an argument. These are matched by - * position - the first {@code %s} gets {@code errorMessageArgs[0]}, etc. - * Unmatched arguments will be appended to the formatted message in square - * braces. Unmatched placeholders will be left as-is. - * @param errorMessageArgs the arguments to be substituted into the message - * template. Arguments are converted to strings using - * {@link String#valueOf(Object)}. - * @return the non-null reference that was validated - * @throws NullPointerException if {@code reference} is null - */ - public static <T> T checkNotNull(T reference, - String errorMessageTemplate, - Object... errorMessageArgs) { - if (reference == null) { - // If either of these parameters is null, the right thing happens anyway - throw new NullPointerException( - format(errorMessageTemplate, errorMessageArgs)); - } - return reference; - } - - /* - * All recent hotspots (as of 2009) *really* like to have the natural code - * - * if (guardExpression) { - * throw new BadException(messageExpression); - * } - * - * refactored so that messageExpression is moved to a separate - * String-returning method. - * - * if (guardExpression) { - * throw new BadException(badMsg(...)); - * } - * - * The alternative natural refactorings into void or Exception-returning - * methods are much slower. This is a big deal - we're talking factors of - * 2-8 in microbenchmarks, not just 10-20%. (This is a hotspot optimizer - * bug, which should be fixed, but that's a separate, big project). - * - * The coding pattern above is heavily used in java.util, e.g. in ArrayList. - * There is a RangeCheckMicroBenchmark in the JDK that was used to test this. - * - * But the methods in this class want to throw different exceptions, - * depending on the args, so it appears that this pattern is not directly - * applicable. But we can use the ridiculous, devious trick of throwing an - * exception in the middle of the construction of another exception. - * Hotspot is fine with that. - */ - - /** - * Ensures that {@code index} specifies a valid <i>element</i> in an array, - * list or string of size {@code size}. An element index may range from zero, - * inclusive, to {@code size}, exclusive. - * - * @param index a user-supplied index identifying an element of an array, list - * or string - * @param size the size of that array, list or string - * @return the value of {@code index} - * @throws IndexOutOfBoundsException if {@code index} is negative or is not - * less than {@code size} - * @throws IllegalArgumentException if {@code size} is negative - */ - public static int checkElementIndex(int index, int size) { - return checkElementIndex(index, size, "index"); - } - - /** - * Ensures that {@code index} specifies a valid <i>element</i> in an array, - * list or string of size {@code size}. An element index may range from zero, - * inclusive, to {@code size}, exclusive. - * - * @param index a user-supplied index identifying an element of an array, list - * or string - * @param size the size of that array, list or string - * @param desc the text to use to describe this index in an error message - * @return the value of {@code index} - * @throws IndexOutOfBoundsException if {@code index} is negative or is not - * less than {@code size} - * @throws IllegalArgumentException if {@code size} is negative - */ - public static int checkElementIndex( - int index, int size, String desc) { - // Carefully optimized for execution by hotspot (explanatory comment above) - if (index < 0 || index >= size) { - throw new IndexOutOfBoundsException(badElementIndex(index, size, desc)); - } - return index; - } - - private static String badElementIndex(int index, int size, String desc) { - if (index < 0) { - return format("%s (%s) must not be negative", desc, index); - } else if (size < 0) { - throw new IllegalArgumentException("negative size: " + size); - } else { // index >= size - return format("%s (%s) must be less than size (%s)", desc, index, size); - } - } - - /** - * Ensures that {@code index} specifies a valid <i>position</i> in an array, - * list or string of size {@code size}. A position index may range from zero - * to {@code size}, inclusive. - * - * @param index a user-supplied index identifying a position in an array, list - * or string - * @param size the size of that array, list or string - * @return the value of {@code index} - * @throws IndexOutOfBoundsException if {@code index} is negative or is - * greater than {@code size} - * @throws IllegalArgumentException if {@code size} is negative - */ - public static int checkPositionIndex(int index, int size) { - return checkPositionIndex(index, size, "index"); - } - - /** - * Ensures that {@code index} specifies a valid <i>position</i> in an array, - * list or string of size {@code size}. A position index may range from zero - * to {@code size}, inclusive. - * - * @param index a user-supplied index identifying a position in an array, list - * or string - * @param size the size of that array, list or string - * @param desc the text to use to describe this index in an error message - * @return the value of {@code index} - * @throws IndexOutOfBoundsException if {@code index} is negative or is - * greater than {@code size} - * @throws IllegalArgumentException if {@code size} is negative - */ - public static int checkPositionIndex( - int index, int size, String desc) { - // Carefully optimized for execution by hotspot (explanatory comment above) - if (index < 0 || index > size) { - throw new IndexOutOfBoundsException(badPositionIndex(index, size, desc)); - } - return index; - } - - private static String badPositionIndex(int index, int size, String desc) { - if (index < 0) { - return format("%s (%s) must not be negative", desc, index); - } else if (size < 0) { - throw new IllegalArgumentException("negative size: " + size); - } else { // index > size - return format("%s (%s) must not be greater than size (%s)", - desc, index, size); - } - } - - /** - * Ensures that {@code start} and {@code end} specify a valid <i>positions</i> - * in an array, list or string of size {@code size}, and are in order. A - * position index may range from zero to {@code size}, inclusive. - * - * @param start a user-supplied index identifying a starting position in an - * array, list or string - * @param end a user-supplied index identifying a ending position in an array, - * list or string - * @param size the size of that array, list or string - * @throws IndexOutOfBoundsException if either index is negative or is - * greater than {@code size}, or if {@code end} is less than {@code start} - * @throws IllegalArgumentException if {@code size} is negative - */ - public static void checkPositionIndexes(int start, int end, int size) { - // Carefully optimized for execution by hotspot (explanatory comment above) - if (start < 0 || end < start || end > size) { - throw new IndexOutOfBoundsException(badPositionIndexes(start, end, size)); - } - } - - private static String badPositionIndexes(int start, int end, int size) { - if (start < 0 || start > size) { - return badPositionIndex(start, size, "start index"); - } - if (end < 0 || end > size) { - return badPositionIndex(end, size, "end index"); - } - // end < start - return format("end index (%s) must not be less than start index (%s)", - end, start); - } - - /** - * Substitutes each {@code %s} in {@code template} with an argument. These - * are matched by position - the first {@code %s} gets {@code args[0]}, etc. - * If there are more arguments than placeholders, the unmatched arguments will - * be appended to the end of the formatted message in square braces. - * - * @param template a non-null string containing 0 or more {@code %s} - * placeholders. - * @param args the arguments to be substituted into the message - * template. Arguments are converted to strings using - * {@link String#valueOf(Object)}. Arguments can be null. - */ - static String format(String template, - Object... args) { - template = String.valueOf(template); // null -> "null" - - // start substituting the arguments into the '%s' placeholders - StringBuilder builder = new StringBuilder( - template.length() + 16 * args.length); - int templateStart = 0; - int i = 0; - while (i < args.length) { - int placeholderStart = template.indexOf("%s", templateStart); - if (placeholderStart == -1) { - break; - } - builder.append(template.substring(templateStart, placeholderStart)); - builder.append(args[i++]); - templateStart = placeholderStart + 2; - } - builder.append(template.substring(templateStart)); - - // if we run out of placeholders, append the extra args in square braces - if (i < args.length) { - builder.append(" ["); - builder.append(args[i++]); - while (i < args.length) { - builder.append(", "); - builder.append(args[i++]); - } - builder.append(']'); - } - - return builder.toString(); - } -} diff --git a/src/main/java/org/whispersystems/libaxolotl/util/guava/Present.java b/src/main/java/org/whispersystems/libaxolotl/util/guava/Present.java deleted file mode 100644 index 630570ff..00000000 --- a/src/main/java/org/whispersystems/libaxolotl/util/guava/Present.java +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Copyright (C) 2011 The Guava Authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.whispersystems.libaxolotl.util.guava; - -import static org.whispersystems.libaxolotl.util.guava.Preconditions.checkNotNull; - -import java.util.Collections; -import java.util.Set; - -/** - * Implementation of an {@link Optional} containing a reference. - */ - -final class Present<T> extends Optional<T> { - private final T reference; - - Present(T reference) { - this.reference = reference; - } - - @Override public boolean isPresent() { - return true; - } - - @Override public T get() { - return reference; - } - - @Override public T or(T defaultValue) { - checkNotNull(defaultValue, "use orNull() instead of or(null)"); - return reference; - } - - @Override public Optional<T> or(Optional<? extends T> secondChoice) { - checkNotNull(secondChoice); - return this; - } - - @Override public T or(Supplier<? extends T> supplier) { - checkNotNull(supplier); - return reference; - } - - @Override public T orNull() { - return reference; - } - - @Override public Set<T> asSet() { - return Collections.singleton(reference); - } - - @Override public <V> Optional<V> transform(Function<? super T, V> function) { - return new Present<V>(checkNotNull(function.apply(reference), - "Transformation function cannot return null.")); - } - - @Override public boolean equals(Object object) { - if (object instanceof Present) { - Present<?> other = (Present<?>) object; - return reference.equals(other.reference); - } - return false; - } - - @Override public int hashCode() { - return 0x598df91c + reference.hashCode(); - } - - @Override public String toString() { - return "Optional.of(" + reference + ")"; - } - - private static final long serialVersionUID = 0; -} diff --git a/src/main/java/org/whispersystems/libaxolotl/util/guava/Supplier.java b/src/main/java/org/whispersystems/libaxolotl/util/guava/Supplier.java deleted file mode 100644 index ba880707..00000000 --- a/src/main/java/org/whispersystems/libaxolotl/util/guava/Supplier.java +++ /dev/null @@ -1,36 +0,0 @@ -/* - * Copyright (C) 2007 The Guava Authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.whispersystems.libaxolotl.util.guava; - - -/** - * A class that can supply objects of a single type. Semantically, this could - * be a factory, generator, builder, closure, or something else entirely. No - * guarantees are implied by this interface. - * - * @author Harry Heymann - * @since 2.0 (imported from Google Collections Library) - */ -public interface Supplier<T> { - /** - * Retrieves an instance of the appropriate type. The returned object may or - * may not be a new instance, depending on the implementation. - * - * @return an instance of the appropriate type - */ - T get(); -} |