Class ContainsPatternPredicate

output/java_guava/1.4.17/Predicates.java:688–728

@see Predicates#contains(Pattern)

  /** @see Predicates#contains(Pattern) */

  @GwtIncompatible // Only used by other GWT-incompatible code.
  private static class ContainsPatternPredicate implements Predicate<CharSequence>, Serializable {
    final Pattern pattern;

    ContainsPatternPredicate(Pattern pattern) {
      this.pattern = checkNotNull(pattern);
    }

    @Override
    public boolean apply(CharSequence t) {
      return pattern.matcher(t).find();
    }

    @Override
    public int hashCode() {
      // Pattern uses Object.hashCode, so we have to reach
      // inside to build a hashCode consistent with equals.
      return Objects.hashCode(pattern.pattern(), pattern.flags());
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof ContainsPatternPredicate) {
        ContainsPatternPredicate that = (ContainsPatternPredicate) obj;

        // Pattern uses Object (identity) equality, so we have to reach
        // inside to compare individual fields.
        return Objects.equal(pattern.pattern(), that.pattern.pattern())
          && pattern.flags() == that.pattern.flags();
      }
      return false;
    }

    @Override
    public String toString() {
      String patternString = MoreObjects.toStringHelper(pattern).add("pattern", pattern.pattern()).add("pattern.flags", pattern.flags()).toString();
      return "Predicates.contains(" + patternString + ")";
    }

    private static final long serialVersionUID = 0;
  }

  /** @see Predicates#containsPattern(String) */