com.almworks.jira.structure.api.util.La2 Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of structure-api Show documentation

Public API for the Structure Plugin for JIRA

The newest version!

package com.almworks.jira.structure.api.util;

import org.jetbrains.annotations.NotNull;

import java.util.function.BiFunction;

public abstract class La2 implements BiFunction {
  public abstract R la(A1 a1, A2 a2);

  @Override
  public R apply(A1 a1, A2 a2) {
    return la(a1, a2);
  }

  public La la(final A1 a1) {
    return new La() {
      @Override
      public R la(A2 a2) {
        return La2.this.la(a1, a2);
      }
    };
  }

  public static  La2 uncurry(@NotNull final La> curried) {
    return new La2() {
      @Override
      public R la(A1 a1, A2 a2) {
        La f = curried.la(a1);
        return f == null ? null : f.la(a2);
      }
    };
  }

  public static  Const const2(R ret) {
    return new Const(ret);
  }
  
  public static  Binder2 bind2(La f) {
    return new Binder2(f);
  }

  public static final La2 sum = new La2() {
    @Override
    public Integer la(Integer x, Integer y) {
      return x + y;
    }
  };  
  
  public static class Const {
    private final R myR;

    public Const(R r) {
      myR = r;
    }
    
    public  La2 f() {
      return uncurry(La.>constant(La.constant(myR)));
    }
  }
  
  public static class Binder2 {
    private final La myF;

    public Binder2(La f) {
      myF = f;
    }

    public  La2 create() {
      return new La2() {
        @Override
        public R la(A1 a1, A2 a2) {
          return myF.la(a2);
        }
      };
    }
  }
}