Class Field

UnLuac/src/unluac/decompile/CodeExtract.java:7–45

public class CodeExtract {

public static class Field {
    
    public Field(int size, int shift) {
      this(size, shift, 0);
    }
    
    public Field(int size, int shift, int offset) {
      this.size = size;
      this.shift = shift;
      this.mask = size_to_mask(size);
      this.offset = offset;
    }
    
    public int extract(int codepoint) {
      return ((codepoint >>> shift) & mask) - offset;
    }
    
    public boolean check(int x) {
      return ((x + offset) & ~mask) == 0;
    }
    
    public int encode(int x) {
      return (x + offset) << shift;
    }
    
    public int clear(int codepoint) {
      return codepoint & ~(mask << shift);
    }
    
    public int max() {
      return mask - offset;
    }
    
    public final int size;
    private final int shift;
    private final int mask;
    private final int offset;
    
  }
  
  public CodeExtract(Version version, int sizeOp, int sizeA, int sizeB, int sizeC) {
    switch(version.instructionformat.get()) {