@Override public CharSource apply(@Nullable String input) { Preconditions.checkNotNull(input); if (policy == InvalidEscapeStringPolicy.PASSTHROUGH) { return CharSource.wrap(input);
public ChannelBufferInput(ReadableByteChannel channel, int bufferSize) { this.channel = checkNotNull(channel, "input channel is null"); checkArgument(bufferSize > 0, "buffer size must be > 0: " + bufferSize); this.buffer = MessageBuffer.allocate(bufferSize); }
public static byte checkedCastToByte(int code) { checkArgument(Byte.MIN_VALUE <= code && code <= Byte.MAX_VALUE, "Extension type code must be within the range of byte"); return (byte) code; }
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); }
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>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 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)); } }
/** * 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, @Nullable 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; }
/** * 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, @Nullable 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; }
/** * Create an extension type header * Example: * <pre> * {@code * import org.msgpack.core.ExtensionTypeHeader; * import static org.msgpack.core.ExtensionTypeHeader.checkedCastToByte; * ... * ExtensionTypeHeader header = new ExtensionTypeHeader(checkedCastToByte(0x01), 32); * ... * } * </pre> * * @param type extension type (byte). You can check the valid byte range with {@link #checkedCastToByte(int)} method. * @param length extension type data length */ public ExtensionTypeHeader(byte type, int length) { checkArgument(length >= 0, "length must be >= 0"); this.type = type; this.length = length; }
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); } }
public InputStreamBufferInput(InputStream in, int bufferSize) { this.in = checkNotNull(in, "input is null"); this.buffer = new byte[bufferSize]; }
Deny(int targetCalls) { super(format("Try harder! (Will pass after %d calls)", targetCalls)); checkArgument(targetCalls >= 0); this.targetCalls = targetCalls; }
/** * 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, @Nullable String errorMessageTemplate, @Nullable Object... errorMessageArgs) { if (!expression) { throw new IllegalStateException( format(errorMessageTemplate, errorMessageArgs)); } }
public ByteBufferInput(ByteBuffer input) { this.input = checkNotNull(input, "input ByteBuffer is null").slice(); }
@Override public MessageBufferU slice(int offset, int length) { if (offset == 0 && length == size()) { return this; } else { checkArgument(offset + length <= size()); try { wrap.position(offset); wrap.limit(offset + length); return new MessageBufferU(base, address + offset, length, wrap.slice()); } finally { resetBufferPosition(); } } }
/** * 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, @Nullable String errorMessageTemplate, @Nullable 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; }
/** * Reset buffer. * * @param input new buffer * @return the old buffer */ public ByteBuffer reset(ByteBuffer input) { ByteBuffer old = this.input; this.input = checkNotNull(input, "input ByteBuffer is null").slice(); isRead = false; return old; }
@Override public MessageBufferBE slice(int offset, int length) { if (offset == 0 && length == size()) { return this; } else { checkArgument(offset + length <= size()); return new MessageBufferBE(base, address + offset, length); } }