LibJS+LibLocale: Replace plural rules selection with ICU

This uses ICU for all of the Intl.PluralRules prototypes, which lets us
remove all data from our plural rules generator.

Plural rules depend directly on internal data from the number formatter,
so rather than creating a separate Locale::PluralRules class (which will
make accessing that data awkward), this adds plural rules APIs to the
existing Locale::NumberFormat.

Meta/CMake/locale_data.cmake

@@ -18,9 +18,6 @@ set(CLDR_CORE_PATH "${CLDR_PATH}/${CLDR_CORE_SOURCE}")
 set(CLDR_DATES_SOURCE cldr-dates-modern)
 set(CLDR_DATES_PATH "${CLDR_PATH}/${CLDR_DATES_SOURCE}")
 
-set(CLDR_LOCALES_SOURCE cldr-localenames-modern)
-set(CLDR_LOCALES_PATH "${CLDR_PATH}/${CLDR_LOCALES_SOURCE}")
-
 set(CLDR_NUMBERS_SOURCE cldr-numbers-modern)
 set(CLDR_NUMBERS_PATH "${CLDR_PATH}/${CLDR_NUMBERS_SOURCE}")
 
@@ -32,7 +29,6 @@ if (ENABLE_UNICODE_DATABASE_DOWNLOAD)
         extract_path("${CLDR_PATH}" "${CLDR_ZIP_PATH}" "${CLDR_BCP47_SOURCE}/**" "${CLDR_BCP47_PATH}")
         extract_path("${CLDR_PATH}" "${CLDR_ZIP_PATH}" "${CLDR_CORE_SOURCE}/**" "${CLDR_CORE_PATH}")
         extract_path("${CLDR_PATH}" "${CLDR_ZIP_PATH}" "${CLDR_DATES_SOURCE}/**" "${CLDR_DATES_PATH}")
-        extract_path("${CLDR_PATH}" "${CLDR_ZIP_PATH}" "${CLDR_LOCALES_SOURCE}/**" "${CLDR_LOCALES_PATH}")
         extract_path("${CLDR_PATH}" "${CLDR_ZIP_PATH}" "${CLDR_NUMBERS_SOURCE}/**" "${CLDR_NUMBERS_PATH}")
     else()
         message(STATUS "Skipping download of ${CLDR_ZIP_URL}, expecting the archive to have been extracted to ${CLDR_PATH}")
@@ -41,9 +37,6 @@ if (ENABLE_UNICODE_DATABASE_DOWNLOAD)
     set(LOCALE_DATA_HEADER LocaleData.h)
     set(LOCALE_DATA_IMPLEMENTATION LocaleData.cpp)
 
-    set(PLURAL_RULES_DATA_HEADER PluralRulesData.h)
-    set(PLURAL_RULES_DATA_IMPLEMENTATION PluralRulesData.cpp)
-
     invoke_generator(
         "LocaleData"
         Lagom::GenerateLocaleData
@@ -52,19 +45,9 @@ if (ENABLE_UNICODE_DATABASE_DOWNLOAD)
         "${LOCALE_DATA_IMPLEMENTATION}"
         arguments -b "${CLDR_BCP47_PATH}" -r "${CLDR_CORE_PATH}" -n "${CLDR_NUMBERS_PATH}" -d "${CLDR_DATES_PATH}"
     )
-    invoke_generator(
-        "PluralRulesData"
-        Lagom::GeneratePluralRulesData
-        "${CLDR_VERSION_FILE}"
-        "${PLURAL_RULES_DATA_HEADER}"
-        "${PLURAL_RULES_DATA_IMPLEMENTATION}"
-        arguments -r "${CLDR_CORE_PATH}" -l "${CLDR_LOCALES_PATH}"
-    )
 
     set(LOCALE_DATA_SOURCES
         ${LOCALE_DATA_HEADER}
         ${LOCALE_DATA_IMPLEMENTATION}
-        ${PLURAL_RULES_DATA_HEADER}
-        ${PLURAL_RULES_DATA_IMPLEMENTATION}
     )
 endif()

Meta/Lagom/Tools/CodeGenerators/LibLocale/CMakeLists.txt

@@ -1,2 +1 @@
 lagom_tool(GenerateLocaleData SOURCES GenerateLocaleData.cpp LIBS LibMain)
-lagom_tool(GeneratePluralRulesData SOURCES GeneratePluralRulesData.cpp LIBS LibMain)