Fix app intents with Xcode 15.3+

apple/internal/aspects/BUILD

@@ -16,6 +16,10 @@ bzl_library(
     deps = [
         "//apple/internal:cc_info_support",
         "//apple/internal/providers:app_intents_info",
+        "@bazel_skylib//lib:collections",
+        "@build_bazel_apple_support//lib:apple_support",
+        "@build_bazel_rules_swift//swift",
+        "@build_bazel_rules_swift//swift:module_name",
     ],
 )
 

apple/internal/aspects/app_intents_aspect.bzl

@@ -14,11 +14,27 @@
 
 """Implementation of the aspect that propagates AppIntentsInfo providers."""
 
+load(
+    "@bazel_skylib//lib:collections.bzl",
+    "collections",
+)
+load(
+    "@build_bazel_apple_support//lib:apple_support.bzl",
+    "apple_support",
+)
+load("@build_bazel_rules_apple//apple/internal:cc_info_support.bzl", "cc_info_support")
 load(
     "@build_bazel_rules_apple//apple/internal/providers:app_intents_info.bzl",
     "AppIntentsInfo",
 )
-load("@build_bazel_rules_apple//apple/internal:cc_info_support.bzl", "cc_info_support")
+load(
+    "@build_bazel_rules_swift//swift:module_name.bzl",
+    "derive_swift_module_name",
+)
+load(
+    "@build_bazel_rules_swift//swift:swift.bzl",
+    "SwiftInfo",
+)
 
 def _app_intents_aspect_impl(target, ctx):
     """Implementation of the swift source files propation aspect."""
@@ -32,13 +48,25 @@ def _app_intents_aspect_impl(target, ctx):
             "Found the following SDK frameworks: %s" % sdk_frameworks.to_list(),
         )
 
+    swiftconstvalues_files = []
+    module_names = collections.uniq([x.name for x in target[SwiftInfo].direct_modules if x.swift])
+    if not module_names:
+        module_names = [derive_swift_module_name(ctx.label)]
+    xcode_version_config = ctx.attr._xcode_config[apple_common.XcodeVersionConfig]
+    if xcode_version_config.xcode_version() >= apple_common.dotted_version("15.0"):
+        swiftconstvalues_files = target[OutputGroupInfo]["const_values"].to_list()
+
     return [
         AppIntentsInfo(
+            intent_module_names = module_names,
             swift_source_files = ctx.rule.files.srcs,
+            swiftconstvalues_files = swiftconstvalues_files,
         ),
     ]
 
 app_intents_aspect = aspect(
     implementation = _app_intents_aspect_impl,
+    # The only attrs required for this aspect are for the `xcode_version` >= 15.0 check above.
+    attrs = apple_support.action_required_attrs(),
     doc = "Collects Swift source files from swift_library targets required by AppIntents tooling.",
 )

apple/internal/partials/app_intents_metadata_bundle.bzl

@@ -88,15 +88,30 @@ def _app_intents_metadata_bundle_partial_impl(
         label.name + "_app_intents_stub_binary",
     )
 
+    # Mirroring Xcode 15+ behavior, the metadata tool only looks at the first split for a given arch
+    # rather than every possible set of source files and inputs. Oddly, this only applies to the
+    # swift source files and the swiftconstvalues files; the triples and other files do cover all
+    # available archs.
+    first_cc_toolchain_key = cc_toolchains.keys()[0]
+
     metadata_bundle = generate_app_intents_metadata_bundle(
         actions = actions,
         apple_fragment = platform_prerequisites.apple_fragment,
         bundle_binary = fat_stub_binary,
+        constvalues_files = [
+            swiftconstvalues_file
+            for dep in deps[first_cc_toolchain_key]
+            for swiftconstvalues_file in dep[AppIntentsInfo].swiftconstvalues_files
+        ],
+        intents_module_names = [
+            intent_module_name
+            for dep in deps[first_cc_toolchain_key]
+            for intent_module_name in dep[AppIntentsInfo].intent_module_names
+        ],
         label = label,
         source_files = [
             swift_source_file
-            for split_deps in deps.values()
-            for dep in split_deps
+            for dep in deps[first_cc_toolchain_key]
             for swift_source_file in dep[AppIntentsInfo].swift_source_files
         ],
         target_triples = [
@@ -134,9 +149,10 @@ def app_intents_metadata_bundle_partial(
 
     Args:
         actions: The actions provider from ctx.actions.
-        cc_toolchains: Dictionary of CcToolchainInfo providers for current target splits.
+        cc_toolchains: Dictionary of CcToolchainInfo and ApplePlatformInfo providers under a split
+            transition to relay target platform information.
         ctx: The Starlark context for a rule target being built.
-        deps: List of dependencies implementing the AppIntents protocol.
+        deps: Dictionary of targets under a split transition implementing the AppIntents protocol.
         disabled_features: List of features to be disabled for C++ link actions.
         features: List of features to be enabled for C++ link actions.
         label: Label of the target being built.

apple/internal/providers/app_intents_info.bzl

@@ -15,6 +15,13 @@
 """AppIntentsInfo provider implementation for AppIntents support for Apple rules."""
 
 AppIntentsInfo = provider(
-    doc = "Private provider to propagate `.swift` source files required by AppIntents processing.",
-    fields = ["swift_source_files"],
+    doc = "Private provider to propagate source files required by AppIntents processing.",
+    fields = {
+        "intent_module_names": """
+A List with the module names where App Intents are expected to be found.""",
+        "swift_source_files": """
+A List with the swift source Files to handle via app intents processing.""",
+        "swiftconstvalues_files": """
+A List with the swiftconstvalues Files to handle via app intents processing for Xcode 15+.""",
+    },
 )

apple/internal/resource_actions/app_intents.bzl

@@ -22,8 +22,10 @@ def generate_app_intents_metadata_bundle(
         actions,
         apple_fragment,
         bundle_binary,
-        source_files,
+        constvalues_files,
+        intents_module_names,
         label,
+        source_files,
         target_triples,
         xcode_version_config):
     """Process and generate AppIntents metadata bundle (Metadata.appintents).
@@ -32,8 +34,12 @@ def generate_app_intents_metadata_bundle(
         actions: The actions provider from `ctx.actions`.
         apple_fragment: An Apple fragment (ctx.fragments.apple).
         bundle_binary: File referencing an application/extension/framework binary.
-        source_files: List of Swift source files implementing the AppIntents protocol.
+        constvalues_files: List of swiftconstvalues files generated from Swift source files
+            implementing the AppIntents protocol.
+        intents_module_names: List of Strings with the module names corresponding to the modules
+            found which have intents compiled.
         label: Label for the current target (`ctx.label`).
+        source_files: List of Swift source files implementing the AppIntents protocol.
         target_triples: List of Apple target triples from `CcToolchainInfo` providers.
         xcode_version_config: The `apple_common.XcodeVersionConfig` provider from the current ctx.
     Returns:
@@ -52,14 +58,49 @@ def generate_app_intents_metadata_bundle(
     args.add("appintentsmetadataprocessor")
 
     args.add("--binary-file", bundle_binary)
-    args.add("--module-name", label.name)
+
+    if len(intents_module_names) > 1:
+        fail("""
+Found the following module names in the top level target {label} for app_intents: {intents_module_names}
+
+App Intents must have only one module name for metadata generation to work correctly.
+""".format(
+            intents_module_names = ", ".join(intents_module_names),
+            label = str(label),
+        ))
+    elif len(intents_module_names) == 0:
+        fail("""
+Could not find a module name for app_intents. One is required for App Intents metadata generation.
+""")
+
+    args.add("--module-name", intents_module_names[0])
     args.add("--output", output.dirname)
-    args.add_all("--source-files", source_files)
+    args.add_all(
+        source_files,
+        before_each = "--source-files",
+    )
+    transitive_inputs = [depset(source_files)]
+    args.add("--sdk-root", apple_support.path_placeholders.sdkroot())
     args.add_all(target_triples, before_each = "--target-triple")
     if xcode_version_config.xcode_version() >= apple_common.dotted_version("15.0"):
-        # TODO(b/295227222): Generate app intents metadata with --compile-time-extraction using
-        # .swiftconstvals instead of --legacy-extraction at the earliest convenience.
-        args.add("--legacy-extraction")
+        args.add_all(
+            constvalues_files,
+            before_each = "--swift-const-vals",
+        )
+        transitive_inputs.append(depset(constvalues_files))
+        args.add("--compile-time-extraction")
+    if xcode_version_config.xcode_version() >= apple_common.dotted_version("15.3"):
+        # Read the build version from the fourth component of the Xcode version.
+        xcode_version_split = str(xcode_version_config.xcode_version()).split(".")
+        if len(xcode_version_split) < 4:
+            fail("""\
+Internal Error: Expected xcode_config to report the Xcode version with the build version as the \
+fourth component of the full version string, but instead found {xcode_version_string}. Please file \
+an issue with the Apple BUILD rules with repro steps.
+""".format(
+                xcode_version_string = str(xcode_version_config.xcode_version()),
+            ))
+        args.add("--xcode-version", xcode_version_split[3])
 
     apple_support.run_shell(
         actions = actions,
@@ -82,7 +123,7 @@ elif [[ "$output" == *"skipping writing output"* ]]; then
   exit 1
 fi
 ''',
-        inputs = depset([bundle_binary], transitive = [depset(source_files)]),
+        inputs = depset([bundle_binary], transitive = transitive_inputs),
         outputs = [output],
         mnemonic = "AppIntentsMetadataProcessor",
         xcode_config = xcode_version_config,

test/starlark_tests/common.bzl

@@ -37,6 +37,7 @@ _min_os_ios = struct(
     oldest_supported = "11.0",
     nplus1 = "13.0",
     stable_swift_abi = "12.2",
+    widget_configuration_intents_support = "16.0",
 )
 
 _min_os_macos = struct(

test/starlark_tests/ios_application_tests.bzl

@@ -779,6 +779,49 @@ def ios_application_test_suite(name):
         tags = [name],
     )
 
+    # Test app with a Widget Configuration Intent with a computed property generates and bundles Metadata.appintents bundle.
+    archive_contents_test(
+        name = "{}_with_widget_configuration_intent_contains_app_intents_metadata_bundle_test".format(name),
+        build_type = "simulator",
+        target_under_test = "//test/starlark_tests/targets_under_test/ios:app_with_widget_configuration_intent",
+        contains = [
+            "$BUNDLE_ROOT/Metadata.appintents/extract.actionsdata",
+            "$BUNDLE_ROOT/Metadata.appintents/version.json",
+        ],
+        tags = [
+            name,
+        ],
+    )
+
+    # Test app that has two Intents defined as top level modules generates an error message.
+    analysis_failure_message_test(
+        name = "{}_with_two_app_intents_and_two_modules_fails".format(name),
+        target_under_test = "//test/starlark_tests/targets_under_test/ios:app_with_app_intent_and_widget_configuration_intent",
+        expected_error = (
+            "App Intents must have only one module name for metadata generation to work correctly."
+        ).format(
+            package = "//test/starlark_tests/targets_under_test/ios",
+        ),
+        tags = [
+            name,
+        ],
+    )
+
+    # Test app with App Intents generates and bundles Metadata.appintents bundle for fat binaries.
+    archive_contents_test(
+        name = "{}_fat_build_contains_app_intents_metadata_bundle_test".format(name),
+        build_type = "simulator",
+        cpus = {
+            "ios_multi_cpus": ["x86_64", "sim_arm64"],
+        },
+        target_under_test = "//test/starlark_tests/targets_under_test/ios:app_with_app_intents",
+        contains = [
+            "$BUNDLE_ROOT/Metadata.appintents/extract.actionsdata",
+            "$BUNDLE_ROOT/Metadata.appintents/version.json",
+        ],
+        tags = [name],
+    )
+
     # Test Metadata.appintents bundle contents for simulator and device.
     archive_contents_test(
         name = "{}_metadata_appintents_bundle_contents_for_simulator_test".format(name),

test/starlark_tests/resources/BUILD

@@ -1118,6 +1118,14 @@ swift_library(
     tags = common.fixture_tags,
 )
 
+swift_library(
+    name = "widget_configuration_intent",
+    srcs = ["widget_configuration_intent.swift"],
+    linkopts = ["-Wl,-framework,AppIntents"],
+    module_name = "WidgetConfigurationIntent",
+    tags = common.fixture_tags,
+)
+
 # --------------------------------------------------------------------------------
 # C/C++ rules with data
 

test/starlark_tests/resources/widget_configuration_intent.swift

@@ -0,0 +1,59 @@
+// Copyright 2023 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import AppIntents
+
+enum RefreshInterval: String, AppEnum {
+  case hourly, daily, weekly
+
+  static var typeDisplayRepresentation: TypeDisplayRepresentation = "Refresh Interval"
+  static var caseDisplayRepresentations: [RefreshInterval: DisplayRepresentation] = [
+    .hourly: "Every Hour",
+    .daily: "Every Day",
+    .weekly: "Every Week",
+  ]
+}
+
+struct FavoriteSoup: WidgetConfigurationIntent {
+  static var title: LocalizedStringResource = "Favorite Soup"
+  static var description = IntentDescription("Shows a picture of your favorite soup!")
+
+  @Parameter(title: "Soup")
+  var name: String?
+
+  @Parameter(title: "Shuffle", default: true)
+  var shuffle: Bool
+
+  @Parameter(title: "Refresh", default: .daily)
+  var interval: RefreshInterval
+
+  static var parameterSummary: some ParameterSummary {
+    When(\.$shuffle, .equalTo, true) {
+      Summary {
+        \.$name
+        \.$shuffle
+        \.$interval
+      }
+    } otherwise: {
+      Summary {
+        \.$name
+        \.$shuffle
+      }
+    }
+  }
+
+  func perform() async throws -> some IntentResult & ProvidesDialog {
+    return .result(dialog: "This is an intent with a computed property!")
+  }
+}

test/starlark_tests/targets_under_test/ios/BUILD

@@ -4478,6 +4478,46 @@ ios_application(
     ],
 )
 
+ios_application(
+    name = "app_with_widget_configuration_intent",
+    app_intents = [
+        "//test/starlark_tests/resources:widget_configuration_intent",
+    ],
+    bundle_id = "com.google.example",
+    families = ["iphone"],
+    infoplists = [
+        "//test/starlark_tests/resources:Info.plist",
+    ],
+    minimum_os_version = common.min_os_ios.widget_configuration_intents_support,
+    provisioning_profile = "//test/testdata/provisioning:integration_testing_ios.mobileprovision",
+    tags = common.fixture_tags,
+    deps = [
+        "//test/starlark_tests/resources:swift_uikit_appdelegate",
+        "//test/starlark_tests/resources:widget_configuration_intent",
+    ],
+)
+
+ios_application(
+    name = "app_with_app_intent_and_widget_configuration_intent",
+    app_intents = [
+        "//test/starlark_tests/resources:app_intent",
+        "//test/starlark_tests/resources:widget_configuration_intent",
+    ],
+    bundle_id = "com.google.example",
+    families = ["iphone"],
+    infoplists = [
+        "//test/starlark_tests/resources:Info.plist",
+    ],
+    minimum_os_version = common.min_os_ios.widget_configuration_intents_support,
+    provisioning_profile = "//test/testdata/provisioning:integration_testing_ios.mobileprovision",
+    tags = common.fixture_tags,
+    deps = [
+        "//test/starlark_tests/resources:app_intent",
+        "//test/starlark_tests/resources:swift_uikit_appdelegate",
+        "//test/starlark_tests/resources:widget_configuration_intent",
+    ],
+)
+
 # ---------------------------------------------------------------------------------------
 # Targets for base_bundle_id and bundle_id flows with and without shared capabilities.