com.github.dakusui.valid8j_pcond.internals.InternalChecks Maven / Gradle / Ivy

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package com.github.dakusui.valid8j_pcond.internals;

import com.github.dakusui.valid8j_pcond.core.refl.ReflUtils;

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;

import static java.lang.String.format;
import static java.util.Collections.emptySet;
import static java.util.Collections.unmodifiableList;
import static java.util.stream.Collectors.toList;

public enum InternalChecks {
  ;

  private static final Set> PRIMITIVE_WRAPPERS = new HashSet>() {{
    add(Integer.class);
    add(Long.class);
    add(Boolean.class);
    add(Byte.class);
    add(Character.class);
    add(Float.class);
    add(Double.class);
    add(Short.class);
    add(Void.class);
  }};

  public static void checkArgument(boolean b, Supplier messageFormatter) {
    if (!b)
      throw new IllegalArgumentException(messageFormatter.get());
  }

  public static  V requireArgument(V arg, Predicate predicate, Supplier messageFormatter) {
    if (!predicate.test(arg))
      throw new IllegalArgumentException(messageFormatter.get());
    return arg;
  }

  public static  V ensureValue(V value, Predicate predicate, Function messageFormatter) {
    if (!predicate.test(value))
      throw new IllegalStateException(messageFormatter.apply(value));
    return value;
  }

  public static  V requireState(V arg, Predicate predicate, Function messageFormatter) {
    if (!predicate.test(arg))
      throw new IllegalStateException(messageFormatter.apply(arg));
    return arg;
  }

  public static Method requireStaticMethod(Method method) {
    if (!Modifier.isStatic(method.getModifiers()))
      throw new IllegalArgumentException(String.format("The specified method '%s' is not static", method));
    return method;
  }

  public static List