Fix casting of List<String> parameters in VM service generator.

Also updates special cased handling of the `scope` parameter to instead work for any Map typed parameter.

Simplified things in general here by casting values to the correct collection type and then relying on `.cast()` to fill in the proper generic types instead of explicitly filling them in.

Change-Id: I7fef91105ca73ee9726780abd76e92817a9e46c0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/504780
Commit-Queue: Jake Macdonald <jakemac@google.com>
Auto-Submit: Jake Macdonald <jakemac@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>

pkg/vm_service/test/get_source_report_test.dart

@@ -144,6 +144,19 @@ final tests = <IsolateTest>[
     expect(scripts.length, 1);
     expect(scripts[0].uri!, endsWith('get_source_report_test.dart'));
 
+    // With `libraryFilters` and `librariesAlreadyCompiled`
+    coverage = await service.getSourceReport(
+      isolateId,
+      [SourceReportKind.kCoverage],
+      scriptId: scriptId,
+      tokenPos: func.location!.tokenPos!,
+      endTokenPos: func.location!.endTokenPos!,
+      libraryFilters: [scripts[0].uri!],
+      librariesAlreadyCompiled: [scripts[0].uri!],
+    );
+    scripts = coverage.scripts!;
+    expect(scripts[0].uri!, endsWith('get_source_report_test.dart'));
+
     // Full isolate
     coverage = await service.getSourceReport(
       isolateId,

pkg/vm_service/tool/dart/generate_dart_common.dart

@@ -455,6 +455,8 @@ class TypeRef {
 
   bool get isArray => arrayDepth > 0;
 
+  bool get isMap => name == 'Map';
+
   bool get isSimple =>
       arrayDepth == 0 &&
       (name == 'int' ||

pkg/vm_service/tool/dart/generate_dart_interface.dart

@@ -45,7 +45,7 @@ abstract interface class VmServiceInterface {
 
   /// Invoked by the Dart Development Service (DDS) immediately after it
   /// connects.
-  /// 
+  ///
   /// [uri] is a HTTP URI pointing to the connected DDS instance.
   ///
   /// When invoked, the VM service implementation should enter single-client
@@ -180,7 +180,7 @@ class VmServerConnection {
           m.args.where((arg) => !arg.optional).forEach((MethodArg arg) {
             if (arg.type.isArray) {
               gen.write(
-                  "${arg.type.listCreationRef}.from(params${nullCheck()}['${arg.name}'] ?? []), ");
+                  "(params${nullCheck()}['${arg.name}'] as List? ?? []).cast(), ");
             } else {
               gen.write("params${nullCheck()}['${arg.name}'], ");
             }
@@ -189,9 +189,12 @@ class VmServerConnection {
           var namedArgs = m.args.where((arg) => arg.optional);
           if (namedArgs.isNotEmpty) {
             for (var arg in namedArgs) {
-              if (arg.name == 'scope') {
+              if (arg.type.isMap) {
                 gen.writeln(
-                    "${arg.name}: params${nullCheck()}['${arg.name}']?.cast<String, String>(), ");
+                    "${arg.name}: (params${nullCheck()}['${arg.name}'] as Map?)?.cast(), ");
+              } else if (arg.type.isArray) {
+                gen.writeln(
+                    "${arg.name}: (params${nullCheck()}['${arg.name}'] as List?)?.cast(), ");
               } else {
                 gen.writeln(
                     "${arg.name}: params${nullCheck()}['${arg.name}'], ");

pkg/vm_service_interface/CHANGELOG.md

@@ -1,3 +1,6 @@
+## 2.0.2-wip
+- Bug fix for `List<String>` parameters to do proper deep casting.
+
 ## 2.0.1
 - Update `package:vm_service` constraint to `>=14.3.0 <16.0.0`.
 

pkg/vm_service_interface/lib/src/vm_service_interface.dart

@@ -1477,7 +1477,7 @@ class VmServerConnection {
             params!['isolateId'],
             params['targetId'],
             params['selector'],
-            List<String>.from(params['argumentIds'] ?? []),
+            (params['argumentIds'] as List? ?? []).cast(),
             disableBreakpoints: params['disableBreakpoints'],
             idZoneId: params['idZoneId'],
           );
@@ -1487,7 +1487,7 @@ class VmServerConnection {
             params!['isolateId'],
             params['targetId'],
             params['expression'],
-            scope: params['scope']?.cast<String, String>(),
+            scope: (params['scope'] as Map?)?.cast(),
             disableBreakpoints: params['disableBreakpoints'],
             idZoneId: params['idZoneId'],
           );
@@ -1497,7 +1497,7 @@ class VmServerConnection {
             params!['isolateId'],
             params['frameIndex'],
             params['expression'],
-            scope: params['scope']?.cast<String, String>(),
+            scope: (params['scope'] as Map?)?.cast(),
             disableBreakpoints: params['disableBreakpoints'],
             idZoneId: params['idZoneId'],
           );
@@ -1645,14 +1645,15 @@ class VmServerConnection {
         case 'getSourceReport':
           response = await _serviceImplementation.getSourceReport(
             params!['isolateId'],
-            List<String>.from(params['reports'] ?? []),
+            (params['reports'] as List? ?? []).cast(),
             scriptId: params['scriptId'],
             tokenPos: params['tokenPos'],
             endTokenPos: params['endTokenPos'],
             forceCompile: params['forceCompile'],
             reportLines: params['reportLines'],
-            libraryFilters: params['libraryFilters'],
+            libraryFilters: (params['libraryFilters'] as List?)?.cast(),
-            librariesAlreadyCompiled: params['librariesAlreadyCompiled'],
+            librariesAlreadyCompiled:
+                (params['librariesAlreadyCompiled'] as List?)?.cast(),
           );
           break;
         case 'getVersion':
@@ -1686,14 +1687,14 @@ class VmServerConnection {
         case 'lookupResolvedPackageUris':
           response = await _serviceImplementation.lookupResolvedPackageUris(
             params!['isolateId'],
-            List<String>.from(params['uris'] ?? []),
+            (params['uris'] as List? ?? []).cast(),
             local: params['local'],
           );
           break;
         case 'lookupPackageUris':
           response = await _serviceImplementation.lookupPackageUris(
             params!['isolateId'],
-            List<String>.from(params['uris'] ?? []),
+            (params['uris'] as List? ?? []).cast(),
           );
           break;
         case 'reloadSources':
@@ -1777,7 +1778,7 @@ class VmServerConnection {
           break;
         case 'setVMTimelineFlags':
           response = await _serviceImplementation.setVMTimelineFlags(
-            List<String>.from(params!['recordedStreams'] ?? []),
+            (params!['recordedStreams'] as List? ?? []).cast(),
           );
           break;
         case 'streamCancel':
@@ -1797,7 +1798,7 @@ class VmServerConnection {
         case 'streamCpuSamplesWithUserTag':
           // ignore: deprecated_member_use_from_same_package
           response = await _serviceImplementation.streamCpuSamplesWithUserTag(
-            List<String>.from(params!['userTags'] ?? []),
+            (params!['userTags'] as List? ?? []).cast(),
           );
           break;
         case 'streamListen':

pkg/vm_service_interface/pubspec.yaml

@@ -1,6 +1,6 @@
 name: vm_service_interface
 
-version: 2.0.1
+version: 2.0.2-wip
 description: >-
   A library providing an interface to implement the Dart VM service protocol.