private ImmutableSortedMap computeUsedPropertyValueAliases()

in java/de/jflex/ucd_generator/ucd/UnicodeData.java [137:190]
46 lines of code
18 McCabe index (conditional complexity)

  private ImmutableSortedMap<String, String> computeUsedPropertyValueAliases() {
    ImmutableSortedMap.Builder<String, String> usedPropertyValueAliases =
        ImmutableSortedMap.naturalOrder();
    for (String binaryProperty : usedBinaryProperties()) {
      for (String nameAlias : getPropertyAliases(binaryProperty)) {
        if (!Objects.equals(nameAlias, binaryProperty)) {
          usedPropertyValueAliases.put(nameAlias, binaryProperty);
        }
      }
    }
    ImmutableMultimap<String, String> usedEnumProperties =
        ImmutableMultimap.<String, String>builder()
            .putAll(usedEnumeratedProperties())
            .put(NORMALIZED_GENERAL_CATEGORY, "lc")
            .build();
    for (String propName : usedEnumProperties.keySet()) {
      for (String propValue : usedEnumProperties.get(propName)) {
        String canonicalValue = propName + '=' + propValue;
        Collection<String> propertyValueAliases = getPropertyValueAliases(propName, propValue);

        // Add value-only aliases for General Category and Script properties.
        if (Objects.equals(propName, NORMALIZED_SCRIPT)
            || Objects.equals(propName, NORMALIZED_GENERAL_CATEGORY)) {
          canonicalValue = propValue;
          for (String valueAlias : propertyValueAliases) {
            if (!Objects.equals(valueAlias, propValue)) {
              usedPropertyValueAliases.put(valueAlias, propValue);
            }
          }
        }
        for (String nameAlias : getPropertyAliases(propName)) {
          if (nameAlias.equals("blk") && version.equals(Versions.VERSION_3_2)) {
            // TODO(regisd) Can we remove this hack?
            // Ugly hack https://github.com/jflex-de/jflex/pull/828#issuecomment-749690037
            continue;
          }
          for (String valueAlias : propertyValueAliases) {
            // Both property names and values have self-aliases; when generating
            // all possible alias combinations, exclude the one that is the same
            // as the full property name + full property value, unless the
            // property is General Category or Script.
            if (Objects.equals(propName, NORMALIZED_SCRIPT)
                || Objects.equals(propName, NORMALIZED_GENERAL_CATEGORY)
                || !(Objects.equals(nameAlias, propName)
                    && Objects.equals(valueAlias, propValue))) {
              String alias = nameAlias + '=' + valueAlias;
              usedPropertyValueAliases.put(alias, canonicalValue);
            }
          }
        }
      }
    }
    return usedPropertyValueAliases.build();
  }