* one or more methods to modify the behavior of the backing map entry as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMapEntry} forward <i>indiscriminately</i> to
 * the methods of the delegate. For example, overriding {@link #getValue} alone <i>will not</i>

     * that, we hardcode the JDK Pattern compiler on Android (and, inadvertently, on App Engine and
     * in Guava, at least for now).
     */
    return new JdkPatternCompiler();
  }

  private static final class JdkPatternCompiler implements PatternCompiler {
    @Override
    public CommonPattern compile(String pattern) {
      return new JdkPattern(Pattern.compile(pattern));
    }

    @Override

  public void testTryParseFailures() {
    for (String badInput : BAD_TRY_PARSE_INPUTS) {
      assertThat(badInput)
          .doesNotMatch(
              Pattern.compile(
                  Doubles.FLOATING_POINT_PATTERN.pattern(),
                  Doubles.FLOATING_POINT_PATTERN.flags()));
      assertThat(Doubles.tryParse(badInput)).isEqualTo(referenceTryParse(badInput));
      assertThat(Doubles.tryParse(badInput)).isNull();
    }
  }

  public void testTryParseFailures() {
    for (String badInput : BAD_TRY_PARSE_INPUTS) {
      assertThat(badInput)
          .doesNotMatch(
              Pattern.compile(
                  Doubles.FLOATING_POINT_PATTERN.pattern(),
                  Doubles.FLOATING_POINT_PATTERN.flags()));
      assertThat(Doubles.tryParse(badInput)).isEqualTo(referenceTryParse(badInput));
      assertThat(Doubles.tryParse(badInput)).isNull();
    }
  }

 * one or more methods to modify the behavior of the backing map entry as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMapEntry} forward <i>indiscriminately</i> to
 * the methods of the delegate. For example, overriding {@link #getValue} alone <i>will not</i>

    return Integer.toString(generateInt());
  }

  @Generates
  Comparable<?> generateComparable() {
    return generateString();
  }

  @Generates
  Pattern generatePattern() {
    return Pattern.compile(generateString());
  }

  @Generates
  Charset generateCharset() {
    return pickInstance(Charset.availableCharsets().values(), Charsets.UTF_8);
  }

  @Generates

   */
  @GwtIncompatible // regular expressions
  static final
  java.util.regex.Pattern
      FLOATING_POINT_PATTERN = fpPattern();

  @GwtIncompatible // regular expressions
  private static
  java.util.regex.Pattern
      fpPattern() {
    /*
     * We use # instead of * for possessive quantifiers. This lets us strip them out when building

          .put(BigInteger.class, BigInteger.ZERO)
          .put(BigDecimal.class, BigDecimal.ZERO)
          .put(CharSequence.class, "")
          .put(String.class, "")
          .put(Pattern.class, Pattern.compile(""))
          .put(MatchResult.class, createMatchResult())
          .put(TimeUnit.class, TimeUnit.SECONDS)
          .put(Charset.class, Charsets.UTF_8)

          .put(BigInteger.class, BigInteger.ZERO)
          .put(BigDecimal.class, BigDecimal.ZERO)
          .put(CharSequence.class, "")
          .put(String.class, "")
          .put(Pattern.class, Pattern.compile(""))
          .put(MatchResult.class, createMatchResult())
          .put(TimeUnit.class, TimeUnit.SECONDS)
          .put(Charset.class, Charsets.UTF_8)

      // different from each other. If buildKeepingLast() collapsed duplicates, that might end up
      // not being true.
      Pattern pattern = Pattern.compile("Multiple entries with same key: four=(.*) and four=(.*)");
      assertThat(expected).hasMessageThat().matches(pattern);
      Matcher matcher = pattern.matcher(expected.getMessage());
      assertThat(matcher.matches()).isTrue();