us.hebi.quickbuf

Class ProtoUtil

java.lang.Object

us.hebi.quickbuf.ProtoUtil

public final class ProtoUtil
extends Object

Utility methods for working with protobuf messages

Since:

09 Aug 2019

Author:

Florian Enner

Method Summary

Modifier and Type	Method and Description
static void	checkArgument(boolean condition, String message)
static void	checkBounds(byte[] buffer, int offset, int length)
static <T> T	checkNotNull(T object)
static void	checkState(boolean condition, String message)
static RepeatedByte	decodeBase64(int expectedSize, String... parts) Parses binary data from base64 encoded String segments.
static void	decodeUtf8(byte[] bytes, int offset, int length, StringBuilder output) Decodes utf8 bytes into a reusable StringBuilder object.
static int	hash32(CharSequence value) Hash code for JSON field name lookup.
static boolean	isEqual(boolean a, boolean b)
static boolean	isEqual(byte a, byte b)
static boolean	isEqual(CharSequence a, CharSequence b)
static boolean	isEqual(double a, double b)
static boolean	isEqual(float a, float b)
static boolean	isEqual(int a, int b)
static boolean	isEqual(long a, long b)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

decodeUtf8

public static void decodeUtf8(byte[] bytes,
                              int offset,
                              int length,
                              StringBuilder output)

Decodes utf8 bytes into a reusable StringBuilder object. Going through a builder has benefits on JDK8, but is (significantly) slower when decoding ascii on JDK13.

decodeBase64

public static RepeatedByte decodeBase64(int expectedSize,
                                        String... parts)

Parses binary data from base64 encoded String segments. Byte arrays are stored very inefficiently in class files, so it is better to store binary data (e.g. descriptors) in string form and parse it at runtime. String literals are limited to 64K, so the data may be split into multiple parts.

Parameters:

expectedSize - size hint for allocating the initial array

parts - binary parts encoded as base64 strings

Returns:

the byte representation of the descriptor

hash32

public static int hash32(CharSequence value)

Hash code for JSON field name lookup. Any changes need to be synchronized between FieldUtil::hash32 and ProtoUtil::hash32.

checkState

public static void checkState(boolean condition,
                              String message)

checkArgument

public static void checkArgument(boolean condition,
                                 String message)

checkNotNull

public static <T> T checkNotNull(T object)

checkBounds

public static void checkBounds(byte[] buffer,
                               int offset,
                               int length)

isEqual

public static boolean isEqual(CharSequence a,
                              CharSequence b)

isEqual

public static boolean isEqual(double a,
                              double b)

isEqual

public static boolean isEqual(float a,
                              float b)

isEqual

public static boolean isEqual(boolean a,
                              boolean b)

isEqual

public static boolean isEqual(long a,
                              long b)

isEqual

public static boolean isEqual(int a,
                              int b)

isEqual

public static boolean isEqual(byte a,
                              byte b)