Version 2.14.0-368.0.dev

Merge commit 'b05892efa124ed8325b2537e16aefb1c0e8a396b' into 'dev'

pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart

@@ -1327,6 +1327,25 @@ const MessageCode messageConstEvalExtension = const MessageCode(
     message:
         r"""Extension operations can't be used in constant expressions.""");
 
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeConstEvalExternalConstructor =
+    messageConstEvalExternalConstructor;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageConstEvalExternalConstructor = const MessageCode(
+    "ConstEvalExternalConstructor",
+    message:
+        r"""External constructors can't be evaluated in constant expressions.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeConstEvalExternalFactory = messageConstEvalExternalFactory;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageConstEvalExternalFactory = const MessageCode(
+    "ConstEvalExternalFactory",
+    message:
+        r"""External factory constructors can't be evaluated in constant expressions.""");
+
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Code<Null> codeConstEvalFailedAssertion = messageConstEvalFailedAssertion;
 

pkg/front_end/lib/src/compute_platform_binaries_location.dart

@@ -23,9 +23,17 @@ String? computePlatformDillName(
     case 'dartdevc':
       switch (nnbdMode) {
         case NnbdMode.Strong:
-          return 'ddc_platform_sound.dill';
+          // DDC is always compiled against the outline so we use it here by
+          // default.
+          return 'ddc_outline_sound.dill';
+        //TODO(johnniwinther): Support using the full dill.
+        //return 'ddc_platform_sound.dill';
         case NnbdMode.Weak:
-          return 'ddc_platform.dill';
+          // DDC is always compiled against the outline so we use it here by
+          // default.
+          return 'ddc_outline.dill';
+        //TODO(johnniwinther): Support using the full dill.
+        //return 'ddc_platform.dill';
         case NnbdMode.Agnostic:
           break;
       }

pkg/front_end/lib/src/fasta/builder/constructor_builder.dart

@@ -247,12 +247,19 @@ class ConstructorBuilderImpl extends FunctionBuilderImpl
     }
   }
 
+  bool _hasBuiltOutlines = false;
+
   @override
   void buildOutlineExpressions(
       SourceLibraryBuilder library,
       CoreTypes coreTypes,
       List<DelayedActionPerformer> delayedActionPerformers,
       List<SynthesizedFunctionNode> synthesizedFunctionNodes) {
+    if (_hasBuiltOutlines) return;
+    if (isConst && isPatch) {
+      origin.buildOutlineExpressions(library, coreTypes,
+          delayedActionPerformers, synthesizedFunctionNodes);
+    }
     super.buildOutlineExpressions(
         library, coreTypes, delayedActionPerformers, synthesizedFunctionNodes);
 
@@ -267,6 +274,10 @@ class ConstructorBuilderImpl extends FunctionBuilderImpl
       bodyBuilder.resolveRedirectingFactoryTargets();
     }
     beginInitializers = null;
+    if (isConst && isPatch) {
+      _finishPatch();
+    }
+    _hasBuiltOutlines = true;
   }
 
   @override
@@ -388,10 +399,7 @@ class ConstructorBuilderImpl extends FunctionBuilderImpl
     return null;
   }
 
-  @override
-  int finishPatch() {
-    if (!isPatch) return 0;
-
+  void _finishPatch() {
     // TODO(ahe): restore file-offset once we track both origin and patch file
     // URIs. See https://github.com/dart-lang/sdk/issues/31579
     origin.constructor.fileUri = fileUri;
@@ -406,6 +414,12 @@ class ConstructorBuilderImpl extends FunctionBuilderImpl
     origin.constructor.function.parent = origin.constructor;
     origin.constructor.initializers = _constructor.initializers;
     setParents(origin.constructor.initializers, origin.constructor);
+  }
+
+  @override
+  int finishPatch() {
+    if (!isPatch) return 0;
+    _finishPatch();
     return 1;
   }
 
@@ -438,7 +452,7 @@ class ConstructorBuilderImpl extends FunctionBuilderImpl
     // compile), and so we also clear them.
     // Note: this method clears both initializers from the target Kernel node
     // and internal state associated with parsing initializers.
-    _constructor.initializers.length = 0;
+    _constructor.initializers = [];
     redirectingInitializer = null;
     superInitializer = null;
     hasMovedSuperInitializer = false;

pkg/front_end/lib/src/fasta/builder/factory_builder.dart

@@ -160,6 +160,20 @@ class SourceFactoryBuilder extends FunctionBuilderImpl {
     return _procedureInternal;
   }
 
+  bool _hasBuiltOutlines = false;
+
+  @override
+  void buildOutlineExpressions(
+      SourceLibraryBuilder library,
+      CoreTypes coreTypes,
+      List<DelayedActionPerformer> delayedActionPerformers,
+      List<SynthesizedFunctionNode> synthesizedFunctionNodes) {
+    if (_hasBuiltOutlines) return;
+    super.buildOutlineExpressions(
+        library, coreTypes, delayedActionPerformers, synthesizedFunctionNodes);
+    _hasBuiltOutlines = true;
+  }
+
   @override
   VariableDeclaration? getTearOffParameter(int index) {
     if (_factoryTearOff != null) {
@@ -213,10 +227,7 @@ class SourceFactoryBuilder extends FunctionBuilderImpl {
     }
   }
 
-  @override
-  int finishPatch() {
-    if (!isPatch) return 0;
-
+  void _finishPatch() {
     // TODO(ahe): restore file-offset once we track both origin and patch file
     // URIs. See https://github.com/dart-lang/sdk/issues/31579
     origin._procedure.fileUri = fileUri;
@@ -232,6 +243,12 @@ class SourceFactoryBuilder extends FunctionBuilderImpl {
     origin._procedure.function.parent = origin._procedure;
     origin._procedure.isRedirectingFactory =
         _procedureInternal.isRedirectingFactory;
+  }
+
+  @override
+  int finishPatch() {
+    if (!isPatch) return 0;
+    _finishPatch();
     return 1;
   }
 }
@@ -347,16 +364,23 @@ class RedirectingFactoryBuilder extends SourceFactoryBuilder {
     return _procedureInternal;
   }
 
+  bool _hasBuiltOutlines = false;
+
   @override
   void buildOutlineExpressions(
       SourceLibraryBuilder library,
       CoreTypes coreTypes,
       List<DelayedActionPerformer> delayedActionPerformers,
       List<SynthesizedFunctionNode> synthesizedFunctionNodes) {
+    if (_hasBuiltOutlines) return;
+    if (isConst && isPatch) {
+      origin.buildOutlineExpressions(library, coreTypes,
+          delayedActionPerformers, synthesizedFunctionNodes);
+    }
     super.buildOutlineExpressions(
         library, coreTypes, delayedActionPerformers, synthesizedFunctionNodes);
     RedirectingFactoryBody redirectingFactoryBody =
-        _procedure.function.body as RedirectingFactoryBody;
+        _procedureInternal.function.body as RedirectingFactoryBody;
     List<DartType>? typeArguments = redirectingFactoryBody.typeArguments;
     Member? target = redirectingFactoryBody.target;
     if (typeArguments != null && typeArguments.any((t) => t is UnknownType)) {
@@ -422,20 +446,19 @@ class RedirectingFactoryBuilder extends SourceFactoryBuilder {
           typeArguments ?? [],
           _tearOffTypeParameters!));
     }
+    if (isConst && isPatch) {
+      _finishPatch();
+    }
+    _hasBuiltOutlines = true;
   }
 
-  @override
-  int finishPatch() {
-    if (!isPatch) return 0;
-
-    super.finishPatch();
+  void _finishPatch() {
+    super._finishPatch();
 
     SourceFactoryBuilder redirectingOrigin = origin;
     if (redirectingOrigin is RedirectingFactoryBuilder) {
       redirectingOrigin.typeArguments = typeArguments;
     }
-
-    return 1;
   }
 
   List<DartType>? getTypeArguments() {

pkg/front_end/lib/src/fasta/incremental_compiler.dart

@@ -1918,7 +1918,7 @@ class IncrementalCompiler implements IncrementalKernelGenerator {
         if (cls == null) return null;
       }
 
-      userCode!.loader.seenMessages.clear();
+      userCode!.loader.resetSeenMessages();
 
       for (TypeParameter typeParam in typeDefinitions) {
         if (!isLegalIdentifier(typeParam.name!)) {

pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart

@@ -41,6 +41,8 @@ import '../fasta_codes.dart'
         messageConstEvalCircularity,
         messageConstEvalContext,
         messageConstEvalExtension,
+        messageConstEvalExternalConstructor,
+        messageConstEvalExternalFactory,
         messageConstEvalFailedAssertion,
         messageConstEvalNotListOrSetInSpread,
         messageConstEvalNotMapInSpread,
@@ -1652,6 +1654,8 @@ class ConstantEvaluator implements ExpressionVisitor<Constant> {
           node,
           'Constructor "$node" has non-trivial body '
           '"${constructor.function.body.runtimeType}".');
+    } else if (constructor.isExternal) {
+      return createErrorConstant(node, messageConstEvalExternalConstructor);
     }
     return null;
   }
@@ -3012,30 +3016,33 @@ class ConstantEvaluator implements ExpressionVisitor<Constant> {
               isConst: true));
     }
     if (target.kind == ProcedureKind.Factory) {
-      if (target.isConst &&
-          target.enclosingLibrary == coreTypes.coreLibrary &&
-          positionals.length == 1 &&
-          (target.name.text == "fromEnvironment" ||
-              target.name.text == "hasEnvironment")) {
-        if (environmentDefines != null) {
-          // Evaluate environment constant.
-          Constant name = positionals.single;
-          if (name is StringConstant) {
-            if (target.name.text == "fromEnvironment") {
-              return _handleFromEnvironment(target, name, named);
-            } else {
-              return _handleHasEnvironment(name);
+      if (target.isConst) {
+        if (target.enclosingLibrary == coreTypes.coreLibrary &&
+            positionals.length == 1 &&
+            (target.name.text == "fromEnvironment" ||
+                target.name.text == "hasEnvironment")) {
+          if (environmentDefines != null) {
+            // Evaluate environment constant.
+            Constant name = positionals.single;
+            if (name is StringConstant) {
+              if (target.name.text == "fromEnvironment") {
+                return _handleFromEnvironment(target, name, named);
+              } else {
+                return _handleHasEnvironment(name);
+              }
+            } else if (name is NullConstant) {
+              return createErrorConstant(node, messageConstEvalNullValue);
             }
-          } else if (name is NullConstant) {
-            return createErrorConstant(node, messageConstEvalNullValue);
+          } else {
+            // Leave environment constant unevaluated.
+            return unevaluated(
+                node,
+                new StaticInvocation(target,
+                    unevaluatedArguments(positionals, named, arguments.types),
+                    isConst: true));
           }
-        } else {
-          // Leave environment constant unevaluated.
-          return unevaluated(
-              node,
-              new StaticInvocation(target,
-                  unevaluatedArguments(positionals, named, arguments.types),
-                  isConst: true));
+        } else if (target.isExternal) {
+          return createErrorConstant(node, messageConstEvalExternalFactory);
         }
       }
     } else if (target.name.text == 'identical') {

pkg/front_end/lib/src/fasta/kernel/kernel_constants.dart

@@ -46,6 +46,17 @@ class KernelConstantErrorReporter extends ErrorReporter {
 
   @override
   void reportInvalidExpression(InvalidExpression node) {
+    // TODO(johnniwinther): Improve the precision of this assertion. Do we
+    // for instance allow warnings only to have been reported in previous
+    // compilations.
+    assert(
+        // Either we have already reported an error
+        loader.hasSeenError ||
+            // or we have reported an error in a previous compilation.
+            loader.builders.values.any((builder) =>
+                builder.library.problemsAsJson?.isNotEmpty ?? false),
+        "No error reported before seeing: "
+        "${node.message}");
     // Assumed to be already reported.
   }
 }

pkg/front_end/lib/src/fasta/loader.dart

@@ -81,6 +81,15 @@ abstract class Loader {
   final List<FormattedMessage> allComponentProblems = <FormattedMessage>[];
 
   final Set<String> seenMessages = new Set<String>();
+  bool _hasSeenError = false;
+
+  void resetSeenMessages() {
+    seenMessages.clear();
+    _hasSeenError = false;
+  }
+
+  /// Returns `true` if a compile time error has been reported.
+  bool get hasSeenError => _hasSeenError;
 
   LibraryBuilder? _coreLibrary;
   LibraryBuilder? typedDataLibrary;
@@ -362,6 +371,9 @@ fileUri: $fileUri
 severity: $severity
 """;
     if (!seenMessages.add(trace)) return null;
+    if (message.code.severity == Severity.error) {
+      _hasSeenError = true;
+    }
     if (message.code.severity == Severity.context) {
       internalProblem(
           templateInternalProblemContextSeverity

pkg/front_end/messages.status

@@ -103,6 +103,10 @@ ConstEvalDuplicateElement/example: Fail
 ConstEvalDuplicateKey/example: Fail
 ConstEvalElementImplementsEqual/example: Fail
 ConstEvalExtension/example: Fail
+ConstEvalExternalConstructor/analyzerCode: Fail
+ConstEvalExternalConstructor/example: Fail
+ConstEvalExternalFactory/analyzerCode: Fail
+ConstEvalExternalFactory/example: Fail
 ConstEvalFailedAssertion/example: Fail
 ConstEvalFailedAssertionWithMessage/example: Fail
 ConstEvalFreeTypeParameter/analyzerCode: Fail

pkg/front_end/messages.yaml

@@ -219,6 +219,12 @@ ConstEvalExtension:
   template: "Extension operations can't be used in constant expressions."
   analyzerCode: NOT_CONSTANT_EXPRESSION
 
+ConstEvalExternalConstructor:
+  template: "External constructors can't be evaluated in constant expressions."
+
+ConstEvalExternalFactory:
+  template: "External factory constructors can't be evaluated in constant expressions."
+
 ConstEvalUnevaluated:
   template: "Couldn't evaluate constant expression."
 

pkg/front_end/test/spell_checking_list_code.txt

@@ -167,6 +167,7 @@ casted
 casts
 categorized
 ce
+ceil
 cfe
 ch
 channel
@@ -220,6 +221,7 @@ combine2
 combiner
 compared
 compares
+compilations
 completes
 complicating
 component's

pkg/front_end/test/spell_checking_list_tests.txt

@@ -702,6 +702,7 @@ ox
 pack
 paging
 paint
+parallax
 parameterized
 party
 pause

pkg/front_end/testcases/dartdevc/symbol.dart

@@ -0,0 +1,5 @@
+// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+main() => const Symbol('a');