[draft] Dart typealias

TODO: describe TODO: split TODO: changelog Resolves: #907 Signed-off-by: Daniel Kamkha <[email protected]>
heremaps · Nov 5, 2021 · f3097eb · f3097eb
1 parent 5835fb4
commit f3097eb
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diff --git a/.github/workflows/functional-tests.yml b/.github/workflows/functional-tests.yml
@@ -244,7 +244,7 @@ jobs:
       - name: Install Dart SDK
         run: |
           DART_RELEASE_CHANNEL=stable
-          DART_VERSION=2.12.0
+          DART_VERSION=2.13.3
           wget -nv https://storage.googleapis.com/dart-archive/channels/${DART_RELEASE_CHANNEL}/release/${DART_VERSION}/linux_packages/dart_${DART_VERSION}-1_amd64.deb
           sudo apt -y install ./dart_${DART_VERSION}-1_amd64.deb
       - name: Build and run functional tests
@@ -276,8 +276,8 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ~/dart_sdk
-          key: ${{ runner.os }}-dart-2.12.0-stable
-          restore-keys: ${{ runner.os }}-dart-2.12.0-stable
+          key: ${{ runner.os }}-dart-2.13.3-stable
+          restore-keys: ${{ runner.os }}-dart-2.13.3-stable
       - name: Install CMake
         uses: jwlawson/[email protected]
         with:
@@ -289,7 +289,7 @@ jobs:
           export DART_ROOT=${HOME}/dart_sdk
           export DART_BIN=${DART_ROOT}/bin
           export PATH=${PATH}:${PWD}/depot_tools:${DART_BIN}
-          DART_VERSION=2.12.0
+          DART_VERSION=2.13.3
           if [ ! -d "${DART_ROOT}/bin" ]; then
             sudo apt install -y python2
             sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 1
@@ -364,7 +364,7 @@ jobs:
       - name: Install Dart SDK
         run: |
           DART_RELEASE_CHANNEL=stable
-          DART_VERSION=2.12.0
+          DART_VERSION=2.13.3
           wget -nv https://storage.googleapis.com/dart-archive/channels/${DART_RELEASE_CHANNEL}/release/${DART_VERSION}/linux_packages/dart_${DART_VERSION}-1_amd64.deb
           sudo apt -y install ./dart_${DART_VERSION}-1_amd64.deb
       - name: Build and run functional tests

diff --git a/functional-tests/functional/dart/main.dart b/functional-tests/functional/dart/main.dart
@@ -66,6 +66,7 @@ import "test/StaticIntMethods_test.dart" as StaticIntMethodsTests;
 import "test/StaticStringMethods_test.dart" as StaticStringMethodsTests;
 import "test/StructsWithConstants_test.dart" as StructsWithConstantsTests;
 import "test/StructsWithMethods_test.dart" as StructsWithMethodsTests;
+import "test/TypeAliases_test.dart" as TypeAliasesTests;
 
 final _allTests = [
   BlobsTests.main,
@@ -111,7 +112,8 @@ final _allTests = [
   StaticIntMethodsTests.main,
   StaticStringMethodsTests.main,
   StructsWithConstantsTests.main,
-  StructsWithMethodsTests.main
+  StructsWithMethodsTests.main,
+  TypeAliasesTests.main
 ];
 
 String _getLibraryPath(String nativeLibraryName) {

diff --git a/functional-tests/functional/dart/pubspec.yaml.in b/functional-tests/functional/dart/pubspec.yaml.in
@@ -1,6 +1,6 @@
 name: FunctionalDartTests
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.13.0 <3.0.0'
 dependencies:
   test:
   functional:

diff --git a/functional-tests/functional/dart/test/TypeAliases_test.dart b/functional-tests/functional/dart/test/TypeAliases_test.dart
@@ -0,0 +1,53 @@
+// -------------------------------------------------------------------------------------------------
+// Copyright (C) 2016-2021 HERE Europe B.V.
+//
+// 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.
+//
+// SPDX-License-Identifier: Apache-2.0
+// License-Filename: LICENSE
+//
+// -------------------------------------------------------------------------------------------------
+
+import "package:test/test.dart";
+import "package:functional/test.dart";
+import "../test_suite.dart";
+
+final _testSuite = TestSuite("Type Aliases");
+
+void main() {
+  _testSuite.test("Type alias to struct", () {
+    final result = StaticTypedefExampleStructTypedef("nonsense");
+
+    expect(result is StaticTypedefExampleStruct, isTrue);
+    expect(result.exampleString, "nonsense");
+  });
+  _testSuite.test("Type alias used by a function", () {
+    final result = StaticTypedef.returnIntTypedef(2);
+
+    expect(result is int, isTrue);
+    expect(result, 3);
+  });
+  _testSuite.test("Type alias points to a type alias", () {
+    final result = StaticTypedef.returnNestedIntTypedef(4);
+
+    expect(result is int, isTrue);
+    expect(result, 5);
+  });
+  _testSuite.test("Type alias from type collection", () {
+    final result = StaticTypedef.returnTypedefPointFromTypeCollection(PointTypedef(1.0, 3.0));
+
+    expect(result is Point, isTrue);
+    expect(result.x, 1.0);
+    expect(result.y, 3.0);
+  });
+}
diff --git a/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartGenerator.kt b/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartGenerator.kt
@@ -159,7 +159,7 @@ internal class DartGenerator : Generator {
             .sortedBy { ffiNameResolver.resolveName(it) }
 
         val generatedFiles = dartFilteredModel.topElements.flatMap {
-            listOfNotNull(
+            listOf(
                 generateDart(
                     it, dartResolvers, dartNameResolver, listOf(importsCollector, declarationImportsCollector),
                     exportsCollector, typeRepositoriesCollector, generatorPredicates.predicates
@@ -188,15 +188,15 @@ internal class DartGenerator : Generator {
         exportsCollector: MutableMap<List<String>, MutableList<DartExport>>,
         typeRepositoriesCollector: MutableList<LimeContainerWithInheritance>,
         predicates: Map<String, (Any) -> Boolean>
-    ): GeneratedFile? {
-        val contentTemplateName = selectTemplate(rootElement) ?: return null
+    ): GeneratedFile {
+        val contentTemplateName = selectTemplate(rootElement)
 
         val packagePath = rootElement.path.head.joinToString(separator = "/")
         val fileName = dartNameResolver.resolveFileName(rootElement)
         val filePath = "$packagePath/$fileName"
         val relativePath = "$SRC_DIR_SUFFIX/$filePath.dart"
 
-        val allTypes = LimeTypeHelper.getAllTypes(rootElement).filterNot { it is LimeTypeAlias }
+        val allTypes = LimeTypeHelper.getAllTypes(rootElement)
         val nonExternalTypes = allTypes.filter { it.external?.dart == null }
         val freeConstants = (rootElement as? LimeTypesCollection)?.constants ?: emptyList()
         val allSymbols =
@@ -504,7 +504,7 @@ internal class DartGenerator : Generator {
             is LimeEnumeration -> "dart/DartEnumeration"
             is LimeException -> "dart/DartException"
             is LimeLambda -> "dart/DartLambda"
-            is LimeTypeAlias -> null
+            is LimeTypeAlias -> "dart/DartTypeAlias"
             else -> throw GluecodiumExecutionException(
                 "Unsupported top-level element: " +
                     limeElement::class.java.name

diff --git a/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartImportResolver.kt b/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartImportResolver.kt
@@ -54,12 +54,12 @@ internal class DartImportResolver(
         }
 
     private fun resolveTypeImports(limeType: LimeType): List<DartImport> =
-        when (val actualType = limeType.actualType) {
-            is LimeBasicType -> resolveBasicTypeImports(actualType)
-            is LimeGenericType -> resolveGenericTypeImports(actualType)
+        when (limeType) {
+            is LimeBasicType -> resolveBasicTypeImports(limeType)
+            is LimeGenericType -> resolveGenericTypeImports(limeType)
             else -> listOfNotNull(
-                createImport(actualType),
-                resolveExternalImport(actualType, IMPORT_PATH_NAME, useAlias = true)
+                createImport(limeType),
+                resolveExternalImport(limeType, IMPORT_PATH_NAME, useAlias = true)
             )
         }
 

diff --git a/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartImportsCollector.kt b/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartImportsCollector.kt
@@ -25,7 +25,12 @@ import com.here.gluecodium.model.lime.LimeClass
 import com.here.gluecodium.model.lime.LimeContainerWithInheritance
 
 internal class DartImportsCollector(importsResolver: ImportsResolver<DartImport>) :
-    GenericImportsCollector<DartImport>(importsResolver, collectTypeRefImports = true, parentTypeFilter = { true }) {
+    GenericImportsCollector<DartImport>(
+        importsResolver,
+        collectTypeRefImports = true,
+        parentTypeFilter = { true },
+        collectTypeAliasImports = true
+    ) {
 
     override fun collectParentTypeRefs(limeContainer: LimeContainerWithInheritance) =
         when (limeContainer) {

diff --git a/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartNameResolver.kt b/gluecodium/src/main/java/com/here/gluecodium/generator/dart/DartNameResolver.kt
@@ -44,7 +44,6 @@ import com.here.gluecodium.model.lime.LimeReturnType
 import com.here.gluecodium.model.lime.LimeSet
 import com.here.gluecodium.model.lime.LimeStruct
 import com.here.gluecodium.model.lime.LimeType
-import com.here.gluecodium.model.lime.LimeTypeAlias
 import com.here.gluecodium.model.lime.LimeTypeRef
 import com.here.gluecodium.model.lime.LimeTypesCollection
 import com.here.gluecodium.model.lime.LimeValue
@@ -80,7 +79,6 @@ internal class DartNameResolver(
             is LimeValue -> resolveValue(element)
             is LimeGenericType -> resolveGenericType(element)
             is LimeTypeRef -> resolveTypeRefName(element)
-            is LimeTypeAlias -> resolveName(element.typeRef)
             is LimeType -> resolveTypeName(element)
             is LimeNamedElement -> getPlatformName(element)
             else ->
@@ -221,7 +219,7 @@ internal class DartNameResolver(
 
     private fun resolveTypeRefName(limeTypeRef: LimeTypeRef, ignoreDuplicates: Boolean = false): String {
         val typeName = resolveName(limeTypeRef.type)
-        val importPath = limeTypeRef.type.actualType.external?.dart?.get(IMPORT_PATH_NAME)
+        val importPath = limeTypeRef.type.external?.dart?.get(IMPORT_PATH_NAME)
         val alias = when {
             importPath != null -> computeAlias(importPath)
             ignoreDuplicates -> null
@@ -258,7 +256,7 @@ internal class DartNameResolver(
     private fun buildDuplicateNames() =
         limeReferenceMap.values
             .filterIsInstance<LimeType>()
-            .filterNot { it is LimeTypesCollection || it is LimeTypeAlias }
+            .filterNot { it is LimeTypesCollection }
             .filter { it.external?.dart == null }
             .groupBy { resolveTypeName(it) }
             .filterValues { it.size > 1 }

diff --git a/gluecodium/src/main/resources/templates/dart/DartClass.mustache b/gluecodium/src/main/resources/templates/dart/DartClass.mustache
@@ -48,6 +48,9 @@ abstract class {{resolveName}}{{!!
 {{/ifPredicate}}
 }
 
+{{#typeAliases}}
+{{>dart/DartTypeAlias}}
+{{/typeAliases}}
 {{#enumerations}}
 {{>dart/DartEnumeration}}
 {{/enumerations}}

diff --git a/gluecodium/src/main/resources/templates/dart/DartInterface.mustache b/gluecodium/src/main/resources/templates/dart/DartInterface.mustache
@@ -64,6 +64,9 @@ abstract class {{resolveName}}{{!!
 {{/ifPredicate}}
 }
 
+{{#typeAliases}}
+{{>dart/DartTypeAlias}}
+{{/typeAliases}}
 {{#enumerations}}
 {{>dart/DartEnumeration}}
 {{/enumerations}}

diff --git a/gluecodium/src/main/resources/templates/dart/DartPubspec.mustache b/gluecodium/src/main/resources/templates/dart/DartPubspec.mustache
@@ -20,7 +20,7 @@
   !}}
 name: {{libraryName}}
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.13.0 <3.0.0'
 dependencies:
   ffi:
   intl:

diff --git a/gluecodium/src/main/resources/templates/dart/DartStruct.mustache b/gluecodium/src/main/resources/templates/dart/DartStruct.mustache
@@ -70,6 +70,9 @@ class {{resolveName}}{{#if external.dart.converter}}Internal{{/if}} {
 }
 {{/unlessPredicate}}
 
+{{#typeAliases}}
+{{>dart/DartTypeAlias}}
+{{/typeAliases}}
 {{#enumerations}}
 {{>dart/DartEnumeration}}
 {{/enumerations}}

diff --git a/gluecodium/src/main/resources/templates/dart/DartTypeAlias.mustache b/gluecodium/src/main/resources/templates/dart/DartTypeAlias.mustache
@@ -0,0 +1,22 @@
+{{!!
+  !
+  ! Copyright (C) 2016-2021 HERE Europe B.V.
+  !
+  ! 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.
+  !
+  ! SPDX-License-Identifier: Apache-2.0
+  ! License-Filename: LICENSE
+  !
+  !}}
+{{>dart/DartDocumentation}}{{>dart/DartAttributes}}
+typedef {{resolveName visibility}}{{resolveName}} = {{resolveName typeRef}};
diff --git a/gluecodium/src/main/resources/templates/dart/DartTypes.mustache b/gluecodium/src/main/resources/templates/dart/DartTypes.mustache
@@ -18,6 +18,9 @@
   ! License-Filename: LICENSE
   !
   !}}
+{{#typeAliases}}
+{{>dart/DartTypeAlias}}
+{{/typeAliases}}
 {{#enumerations}}
 {{>dart/DartEnumeration}}
 {{/enumerations}}