CodepointMap.java

net.minecraft.client.gui.font.CodepointMap

信息

• 全限定名：net.minecraft.client.gui.font.CodepointMap
• 类型：public class
• 包：net.minecraft.client.gui.font
• 源码路径：src/main/java/net/minecraft/client/gui/font/CodepointMap.java
• 起始行号：L12
• 职责：

  TODO

字段/常量

• BLOCK_BITS

  • 类型: int
  • 修饰符: private static final
  • 源码定位: L13
  • 说明:

    TODO

• BLOCK_SIZE

  • 类型: int
  • 修饰符: private static final
  • 源码定位: L14
  • 说明:

    TODO

• IN_BLOCK_MASK

  • 类型: int
  • 修饰符: private static final
  • 源码定位: L15
  • 说明:

    TODO

• MAX_BLOCK

  • 类型: int
  • 修饰符: private static final
  • 源码定位: L16
  • 说明:

    TODO

• BLOCK_COUNT

  • 类型: int
  • 修饰符: private static final
  • 源码定位: L17
  • 说明:

    TODO

• empty

  • 类型: T[]
  • 修饰符: private final
  • 源码定位: L18
  • 说明:

    TODO

• blockMap

  • 类型: T[][]
  • 修饰符: private final
  • 源码定位: L19
  • 说明:

    TODO

• blockConstructor

  • 类型: IntFunction<T[]>
  • 修饰符: private final
  • 源码定位: L20
  • 说明:

    TODO

内部类/嵌套类型

• net.minecraft.client.gui.font.CodepointMap.Output
  • 类型: interface
  • 修饰符: public
  • 源码定位: L110
  • 说明:

    TODO

构造器

public CodepointMap(IntFunction<T[]> blockConstructor, IntFunction<T[][]> blockMapConstructor) @ L22

• 构造器名：CodepointMap
• 源码定位：L22
• 修饰符：public

参数:

• blockConstructor: IntFunction<T[]>
• blockMapConstructor: IntFunction<T[][]>

说明:

TODO

方法

下面的方法块按源码顺序生成。

public void clear() @ L29

• 方法名：clear
• 源码定位：L29
• 返回类型：void
• 修饰符：public

参数:

• 无

说明:

TODO

public T get(int codepoint) @ L33

• 方法名：get
• 源码定位：L33
• 返回类型：T
• 修饰符：public

参数:

• codepoint: int

说明:

TODO

public T put(int codepoint, T value) @ L39

• 方法名：put
• 源码定位：L39
• 返回类型：T
• 修饰符：public

参数:

• codepoint: int
• value: T

说明:

TODO

public T computeIfAbsent(int codepoint, IntFunction<T> mapper) @ L55

• 方法名：computeIfAbsent
• 源码定位：L55
• 返回类型：T
• 修饰符：public

参数:

• codepoint: int
• mapper: IntFunction

说明:

TODO

public T remove(int codepoint) @ L74

• 方法名：remove
• 源码定位：L74
• 返回类型：T
• 修饰符：public

参数:

• codepoint: int

说明:

TODO

public void forEach(CodepointMap.Output<T> output) @ L87

• 方法名：forEach
• 源码定位：L87
• 返回类型：void
• 修饰符：public

参数:

• output: CodepointMap.Output

说明:

TODO

public IntSet keySet() @ L102

• 方法名：keySet
• 源码定位：L102
• 返回类型：IntSet
• 修饰符：public

参数:

• 无

说明:

TODO

代码

@OnlyIn(Dist.CLIENT)
public class CodepointMap<T> {
    private static final int BLOCK_BITS = 8;
    private static final int BLOCK_SIZE = 256;
    private static final int IN_BLOCK_MASK = 255;
    private static final int MAX_BLOCK = 4351;
    private static final int BLOCK_COUNT = 4352;
    private final T[] empty;
    private final @Nullable T[][] blockMap;
    private final IntFunction<T[]> blockConstructor;
 
    public CodepointMap(IntFunction<T[]> blockConstructor, IntFunction<T[][]> blockMapConstructor) {
        this.empty = (T[])((Object[])blockConstructor.apply(256));
        this.blockMap = (T[][])((Object[][])blockMapConstructor.apply(4352));
        Arrays.fill(this.blockMap, this.empty);
        this.blockConstructor = blockConstructor;
    }
 
    public void clear() {
        Arrays.fill(this.blockMap, this.empty);
    }
 
    public @Nullable T get(int codepoint) {
        int block = codepoint >> 8;
        int offset = codepoint & 0xFF;
        return this.blockMap[block][offset];
    }
 
    public @Nullable T put(int codepoint, T value) {
        int block = codepoint >> 8;
        int offset = codepoint & 0xFF;
        T[] blockData = this.blockMap[block];
        if (blockData == this.empty) {
            blockData = (T[])((Object[])this.blockConstructor.apply(256));
            this.blockMap[block] = blockData;
            blockData[offset] = value;
            return null;
        } else {
            T previous = blockData[offset];
            blockData[offset] = value;
            return previous;
        }
    }
 
    public T computeIfAbsent(int codepoint, IntFunction<T> mapper) {
        int block = codepoint >> 8;
        int offset = codepoint & 0xFF;
        T[] blockData = this.blockMap[block];
        T current = blockData[offset];
        if (current != null) {
            return current;
        } else {
            if (blockData == this.empty) {
                blockData = (T[])((Object[])this.blockConstructor.apply(256));
                this.blockMap[block] = blockData;
            }
 
            T result = mapper.apply(codepoint);
            blockData[offset] = result;
            return result;
        }
    }
 
    public @Nullable T remove(int codepoint) {
        int block = codepoint >> 8;
        int offset = codepoint & 0xFF;
        T[] blockData = this.blockMap[block];
        if (blockData == this.empty) {
            return null;
        } else {
            T previous = blockData[offset];
            blockData[offset] = null;
            return previous;
        }
    }
 
    public void forEach(CodepointMap.Output<T> output) {
        for (int block = 0; block < this.blockMap.length; block++) {
            T[] blockData = this.blockMap[block];
            if (blockData != this.empty) {
                for (int offset = 0; offset < blockData.length; offset++) {
                    T value = blockData[offset];
                    if (value != null) {
                        int codepoint = block << 8 | offset;
                        output.accept(codepoint, value);
                    }
                }
            }
        }
    }
 
    public IntSet keySet() {
        IntOpenHashSet result = new IntOpenHashSet();
        this.forEach((codepoint, value) -> result.add(codepoint));
        return result;
    }
 
    @FunctionalInterface
    @OnlyIn(Dist.CLIENT)
    public interface Output<T> {
        void accept(int codepoint, T value);
    }
}

引用的其他类

• 无