com.github.dakusui.crest.matcherbuilders.ObjectMatcherBuilder Maven / Gradle / Ivy

Go to download
package com.github.dakusui.crest.matcherbuilders;

import com.github.dakusui.crest.core.Matcher;
import com.github.dakusui.crest.functions.TransformingPredicate;
import com.github.dakusui.faultsource.printable.Predicates;

import java.util.LinkedList;
import java.util.List;
import java.util.Objects;
import java.util.function.Function;
import java.util.function.Predicate;

public abstract class ObjectMatcherBuilder> implements MatcherBuilder {
  private final Function function;
  private final List>        predicates;

  public ObjectMatcherBuilder(Function function) {
    this.function = function;
    this.predicates = new LinkedList<>();
  }

  @SuppressWarnings("unchecked")
  @Override
  public SELF check(Predicate predicate) {
    this.predicates.add(predicate);
    return (SELF) this;
  }

  @Override
  public  SELF check(Function function, Predicate predicate) {
    return this.check(new TransformingPredicate(predicate, function));
  }

  public SELF isNull() {
    return this.check(Predicates.isNull());
  }

  public SELF isNotNull() {
    return this.check(Predicates.isNotNull());
  }

  public SELF isSameAs(OUT value) {
    return this.check(Predicates.isSameAs(value));
  }

  public SELF isInstanceOf(Class value) {
    return this.check(Predicates.isInstanceOf(value));
  }

  @Override
  public Matcher all() {
    return matcher(Op.AND);
  }

  @Override
  public Matcher any() {
    return matcher(Op.OR);
  }

  private Matcher matcher(Op op) {
    return (predicates.size() == 1) ?
        Matcher.Leaf.create(predicates.get(0), this.function) :
        Objects.requireNonNull(op).create(predicates, this.function);
  }
}