Bug 1719535 - Part 4. Add ICU4X Data Provider. r=platform-i18n-reviewers,dminor,sylvestre

ICU4X will be used by ECMA-402 implementation at future. So we should link it
to SpiderMonkey instead of libxul only.

Depends on D178157

Differential Revision: https://phabricator.services.mozilla.com/D167673

intl/components/moz.build

@@ -73,6 +73,17 @@ UNIFIED_SOURCES += [
 if not CONFIG["JS_STANDALONE"]:
     TEST_DIRS += ["gtest"]
 
+if CONFIG["MOZ_ICU4X"]:
+    EXPORTS.mozilla.intl += [
+        "src/ICU4XGeckoDataProvider.h",
+    ]
+    UNIFIED_SOURCES += [
+        "src/ICU4XGeckoDataProvider.cpp",
+    ]
+    LOCAL_INCLUDES += [
+        "/third_party/rust/icu_capi/c/include",
+    ]
+
 # At the time of this writing the MOZ_HAS_MOZGLUE define must be true in order to
 # correctly include ConvertUtf8toUtf16 in certain include paths, otherwise it results
 # in a compile time "undeclared identifier" error. See:

intl/components/src/ICU4XGeckoDataProvider.cpp

@@ -0,0 +1,35 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ICU4XGeckoDataProvider.h"
+
+#include "ICU4XDataProvider.h"
+#include "mozilla/Assertions.h"
+
+#include <mutex>
+
+namespace mozilla::intl {
+
+static capi::ICU4XDataProvider* sICU4XDataProvider = nullptr;
+
+capi::ICU4XDataProvider* GetDataProvider() {
+  static std::once_flag sOnce;
+
+  std::call_once(sOnce, []() {
+    sICU4XDataProvider = capi::ICU4XDataProvider_create_test();
+  });
+
+  return sICU4XDataProvider;
+}
+
+void CleanupDataProvider() {
+  if (!sICU4XDataProvider) {
+    return;
+  }
+
+  capi::ICU4XDataProvider_destroy(sICU4XDataProvider);
+  sICU4XDataProvider = nullptr;
+}
+
+}  // namespace mozilla::intl

intl/components/src/ICU4XGeckoDataProvider.h

@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef intl_components_ICU4XGeckoDataProvider_h
+#define intl_components_ICU4XGeckoDataProvider_h
+
+/**
+ * This component is a C/C++ API to get ICU4X data provider.
+ */
+
+namespace capi {
+struct ICU4XDataProvider;
+}
+
+namespace mozilla::intl {
+capi::ICU4XDataProvider* GetDataProvider();
+void CleanupDataProvider();
+}  // namespace mozilla::intl
+
+#endif

js/src/make-source-package.py

@@ -142,6 +142,8 @@ rsync_filter_list = """
 - /intl/icu/source/tools
 + /intl/icu/**
 
++ /intl/icu_testdata/**
+
 - /intl/components/gtest
 + /intl/components/**
 
@@ -284,7 +286,9 @@ def is_mozjs_cargo_member(line):
 def is_mozjs_crates_io_local_patch(line):
     """Checks if the line in patch.crates-io is mozjs-related"""
 
-    return any(f'path = "{p}' in line for p in ("js", "build", "third_party/rust"))
+    return any(
+        f'path = "{p}' in line for p in ("js", "build", "third_party/rust", "intl")
+    )
 
 
 def clean():

js/src/rust/Cargo.toml

@@ -14,6 +14,7 @@ moz_memory = ['mozglue-static/moz_memory']
 simd-accel = ['jsrust_shared/simd-accel']
 smoosh = ['jsrust_shared/smoosh']
 gluesmith = ['jsrust_shared/gluesmith']
+icu4x = ['jsrust_shared/icu4x']
 
 [dependencies]
 mozilla-central-workspace-hack = { version = "0.1", features = ["jsrust"], optional = true }

js/src/rust/moz.build

@@ -18,6 +18,9 @@ if CONFIG["JS_ENABLE_SMOOSH"]:
 if CONFIG["MOZ_MEMORY"]:
     features += ["moz_memory"]
 
+if CONFIG["MOZ_ICU4X"]:
+    features += ["icu4x"]
+
 RustLibrary("jsrust", features)
 
 if CONFIG["JS_SHARED_LIBRARY"]:

js/src/rust/shared/Cargo.toml

@@ -15,9 +15,11 @@ encoding_c_mem = "0.2.4"
 smoosh = { path = "../../frontend/smoosh", optional = true }
 mozglue-static = { path = "../../../../mozglue/static/rust" }
 gluesmith = { path = "../../fuzz-tests/gluesmith", optional = true }
+icu_capi = { version = "1.2.2", optional = true, default-features= false, features = ["any_provider", "icu_segmenter", "provider_test"] }
 
 [features]
 simd-accel = ['encoding_c/simd-accel']
+icu4x = ['icu_capi']
 
 # Uncomment this to enable perf support in release mode.
 #[profile.release]

js/src/rust/shared/lib.rs

@@ -21,3 +21,6 @@ extern crate smoosh;
 
 #[cfg(feature = "gluesmith")]
 extern crate gluesmith;
+
+#[cfg(feature = "icu4x")]
+extern crate icu_capi;

js/src/vm/Initialization.cpp

@@ -11,6 +11,9 @@
 #include "mozilla/Assertions.h"
 #if JS_HAS_INTL_API
 #  include "mozilla/intl/ICU4CLibrary.h"
+#  if MOZ_ICU4X
+#    include "mozilla/intl/ICU4XGeckoDataProvider.h"
+#  endif
 #endif
 #include "mozilla/TextUtils.h"
 
@@ -279,6 +282,9 @@ static void ShutdownImpl(JS::detail::FrontendOnly frontendOnly) {
 
 #if JS_HAS_INTL_API
   mozilla::intl::ICU4CLibrary::Cleanup();
+#  if MOZ_ICU4X
+  mozilla::intl::CleanupDataProvider();
+#  endif  // MOZ_ICU4X
 #endif    // JS_HAS_INTL_API
 
   if (frontendOnly == FrontendOnly::No) {

toolkit/content/license.html

@@ -4747,10 +4747,15 @@ THE SOFTWARE.
 
     <h1><a id="unicode"></a>Unicode License</h1>
 
-    <p>This license applies to files in the <code>intl/icu</code>
-    and <code>intl/tzdata</code> directories and certain files in
-    the <code>js/src/util</code> directory.</p>
-    </p>
+    <p>This license applies to the following files or, in the case of
+    directories, certain files in those directories:</p>
+
+    <ul>
+      <li><code>intl/icu</code></li>
+      <li><code>intl/icu_testdata</code></li>
+      <li><code>intl/tzdata</code></li>
+      <li><code>js/src/util</code></li>
+    </ul>
 
 <pre>
 COPYRIGHT AND PERMISSION NOTICE

toolkit/library/rust/gkrust-features.mozbuild

@@ -79,5 +79,8 @@ if CONFIG["MOZ_WEBMIDI_MIDIR_IMPL"]:
 if CONFIG["MOZ_UNIFFI_FIXTURES"]:
     gkrust_features += ['uniffi_fixtures']
 
+if CONFIG["MOZ_ICU4X"]:
+    gkrust_features += ['icu4x']
+
 # This must remain last.
 gkrust_features = ["gkrust-shared/%s" % f for f in gkrust_features]

toolkit/library/rust/shared/Cargo.toml

@@ -143,6 +143,7 @@ uniffi_fixtures = [
     "uniffi-fixture-external-types",
 ]
 webmidi_midir_impl = ["midir_impl"]
+icu4x = ["jsrust_shared/icu4x"]
 
 [lib]
 path = "lib.rs"

tools/lint/file-whitespace.yml

@@ -68,6 +68,7 @@ file-whitespace:
         - image/test/crashtests
         - image/test/mochitest
         - image/test/reftest
+        - intl/icu_testdata
         - intl/lwbrk/crashtests
         - intl/uconv/crashtests
         - intl/uconv/tests

tools/lint/license.yml

@@ -27,6 +27,8 @@ license:
         - gradle.properties
         # might not work with license
         - gradle/wrapper/gradle-wrapper.properties
+        # ICU4X data
+        - intl/icu_testdata
         # Imported code that is dual Apache2 / MIT licensed
         - intl/l10n/rust/l10nregistry-rs
         - intl/l10n/rust/l10nregistry-tests

tools/lint/rustfmt.yml

@@ -9,6 +9,7 @@ rust:
         - gfx/wr/peek-poke/
         - gfx/wr/webrender_build/
         - gfx/wr/wr_malloc_size_of/
+        - intl/icu_testdata/
         - media/mp4parse-rust/
         - servo/
         - '**/*.mako.rs'