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[cfe] Add (Source)ViewBuilder
Includes refactoring to share code with (Source)ExtensionBuilder. Change-Id: If3cc66fa9f868d23ef756f80bc2f447cb534c5d1 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/268763 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Chloe Stefantsova <cstefantsova@google.com>
1 parent e1ea341 commit 4306e07

20 files changed

+949
-386
lines changed

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

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,162 @@
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// Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:kernel/ast.dart';
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import 'package:kernel/class_hierarchy.dart';
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import '../messages.dart';
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import '../problems.dart';
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import '../scope.dart';
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import '../source/source_library_builder.dart';
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import 'builder.dart';
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import 'declaration_builder.dart';
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import 'field_builder.dart';
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import 'library_builder.dart';
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import 'member_builder.dart';
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import 'nullability_builder.dart';
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import 'type_builder.dart';
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import 'type_variable_builder.dart';
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/// Shared implementation between extension and view builders.
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mixin DeclarationBuilderMixin implements DeclarationBuilder {
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/// Type parameters declared.
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///
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/// This is `null` if the declaration is not generic.
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List<TypeVariableBuilder>? get typeParameters;
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/// Lookup a static member of this declaration.
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@override
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Builder? findStaticBuilder(
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String name, int charOffset, Uri fileUri, LibraryBuilder accessingLibrary,
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{bool isSetter = false}) {
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if (accessingLibrary.nameOriginBuilder.origin !=
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libraryBuilder.nameOriginBuilder.origin &&
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name.startsWith("_")) {
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return null;
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}
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Builder? declaration = isSetter
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? scope.lookupSetter(name, charOffset, fileUri, isInstanceScope: false)
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: scope.lookup(name, charOffset, fileUri, isInstanceScope: false);
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// TODO(johnniwinther): Handle patched extensions/views.
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return declaration;
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}
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@override
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DartType buildAliasedType(
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LibraryBuilder library,
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NullabilityBuilder nullabilityBuilder,
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List<TypeBuilder>? arguments,
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TypeUse typeUse,
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Uri fileUri,
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int charOffset,
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ClassHierarchyBase? hierarchy,
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{required bool hasExplicitTypeArguments}) {
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return buildAliasedTypeWithBuiltArguments(
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library,
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nullabilityBuilder.build(library),
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_buildAliasedTypeArguments(library, arguments, hierarchy),
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typeUse,
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fileUri,
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charOffset,
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hasExplicitTypeArguments: hasExplicitTypeArguments);
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}
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@override
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int get typeVariablesCount => typeParameters?.length ?? 0;
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List<DartType> _buildAliasedTypeArguments(LibraryBuilder library,
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List<TypeBuilder>? arguments, ClassHierarchyBase? hierarchy) {
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if (arguments == null && typeParameters == null) {
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return <DartType>[];
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}
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if (arguments == null && typeParameters != null) {
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List<DartType> result =
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new List<DartType>.generate(typeParameters!.length, (int i) {
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return typeParameters![i].defaultType!.buildAliased(
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library, TypeUse.defaultTypeAsTypeArgument, hierarchy);
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}, growable: true);
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if (library is SourceLibraryBuilder) {
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library.inferredTypes.addAll(result);
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}
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return result;
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}
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if (arguments != null && arguments.length != typeVariablesCount) {
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// That should be caught and reported as a compile-time error earlier.
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return unhandled(
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templateTypeArgumentMismatch
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.withArguments(typeVariablesCount)
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.problemMessage,
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"buildTypeArguments",
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-1,
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null);
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}
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assert(arguments!.length == typeVariablesCount);
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List<DartType> result =
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new List<DartType>.generate(arguments!.length, (int i) {
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return arguments[i]
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.buildAliased(library, TypeUse.typeArgument, hierarchy);
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}, growable: true);
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return result;
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}
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void forEach(void f(String name, Builder builder)) {
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scope
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.filteredNameIterator(
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includeDuplicates: false, includeAugmentations: false)
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.forEach(f);
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}
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@override
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InterfaceType? get thisType => null;
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@override
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Builder? lookupLocalMember(String name,
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{bool setter = false, bool required = false}) {
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// TODO(johnniwinther): Support patching on extensions/views.
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Builder? builder = scope.lookupLocalMember(name, setter: setter);
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if (required && builder == null) {
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internalProblem(
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templateInternalProblemNotFoundIn.withArguments(
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name, fullNameForErrors),
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-1,
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null);
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}
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return builder;
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}
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Builder? lookupLocalMemberByName(Name name,
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{bool setter = false, bool required = false}) {
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Builder? builder =
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lookupLocalMember(name.text, setter: setter, required: required);
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if (builder == null && setter) {
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// When looking up setters, we include assignable fields.
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builder = lookupLocalMember(name.text, setter: false, required: required);
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if (builder is! FieldBuilder || !builder.isAssignable) {
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builder = null;
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}
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}
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if (builder != null) {
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if (name.isPrivate && libraryBuilder.library != name.library) {
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builder = null;
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} else if (builder is FieldBuilder &&
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!builder.isStatic &&
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!builder.isExternal) {
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// Non-external extension instance fields are invalid.
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builder = null;
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} else if (builder.isDuplicate) {
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// Duplicates are not visible in the instance scope.
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builder = null;
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} else if (builder is MemberBuilder && builder.isConflictingSetter) {
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// Conflicting setters are not visible in the instance scope.
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// TODO(johnniwinther): Should we return an [AmbiguousBuilder] here and
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// above?
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builder = null;
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}
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}
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return builder;
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}
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}

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

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Original file line numberDiff line numberDiff line change
@@ -6,7 +6,6 @@ import 'package:kernel/ast.dart';
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import '../messages.dart';
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import '../scope.dart';
9-
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import 'builder.dart';
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import 'library_builder.dart';
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import 'metadata_builder.dart';

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

Lines changed: 2 additions & 151 deletions
Original file line numberDiff line numberDiff line change
@@ -3,20 +3,13 @@
33
// BSD-style license that can be found in the LICENSE file.
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import 'package:kernel/ast.dart';
6-
import 'package:kernel/class_hierarchy.dart';
7-
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import '../fasta_codes.dart'
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show templateInternalProblemNotFoundIn, templateTypeArgumentMismatch;
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import '../problems.dart';
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import '../scope.dart';
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import '../source/source_library_builder.dart';
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import 'builder.dart';
9+
import 'builder_mixins.dart';
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import 'declaration_builder.dart';
15-
import 'field_builder.dart';
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import 'library_builder.dart';
17-
import 'member_builder.dart';
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import 'metadata_builder.dart';
19-
import 'nullability_builder.dart';
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import 'type_builder.dart';
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import 'type_variable_builder.dart';
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@@ -50,54 +43,12 @@ abstract class ExtensionBuilder implements DeclarationBuilder {
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}
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5245
abstract class ExtensionBuilderImpl extends DeclarationBuilderImpl
46+
with DeclarationBuilderMixin
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implements ExtensionBuilder {
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ExtensionBuilderImpl(List<MetadataBuilder>? metadata, int modifiers,
5549
String name, LibraryBuilder parent, int charOffset, Scope scope)
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: super(metadata, modifiers, name, parent, charOffset, scope);
5751

58-
/// Lookup a static member of this declaration.
59-
@override
60-
Builder? findStaticBuilder(
61-
String name, int charOffset, Uri fileUri, LibraryBuilder accessingLibrary,
62-
{bool isSetter = false}) {
63-
if (accessingLibrary.nameOriginBuilder.origin !=
64-
libraryBuilder.nameOriginBuilder.origin &&
65-
name.startsWith("_")) {
66-
return null;
67-
}
68-
Builder? declaration = isSetter
69-
? scope.lookupSetter(name, charOffset, fileUri, isInstanceScope: false)
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: scope.lookup(name, charOffset, fileUri, isInstanceScope: false);
71-
// TODO(johnniwinther): Handle patched extensions.
72-
return declaration;
73-
}
74-
75-
@override
76-
DartType buildAliasedType(
77-
LibraryBuilder library,
78-
NullabilityBuilder nullabilityBuilder,
79-
List<TypeBuilder>? arguments,
80-
TypeUse typeUse,
81-
Uri fileUri,
82-
int charOffset,
83-
ClassHierarchyBase? hierarchy,
84-
{required bool hasExplicitTypeArguments}) {
85-
if (library is SourceLibraryBuilder &&
86-
library.libraryFeatures.extensionTypes.isEnabled) {
87-
return buildAliasedTypeWithBuiltArguments(
88-
library,
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nullabilityBuilder.build(library),
90-
_buildAliasedTypeArguments(library, arguments, hierarchy),
91-
typeUse,
92-
fileUri,
93-
charOffset,
94-
hasExplicitTypeArguments: hasExplicitTypeArguments);
95-
} else {
96-
throw new UnsupportedError("ExtensionBuilder.buildType is not supported"
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"in library '${library.importUri}'.");
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}
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}
100-
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@override
10253
DartType buildAliasedTypeWithBuiltArguments(
10354
LibraryBuilder library,
@@ -117,109 +68,9 @@ abstract class ExtensionBuilderImpl extends DeclarationBuilderImpl
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}
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}
11970

120-
@override
121-
int get typeVariablesCount => typeParameters?.length ?? 0;
122-
123-
List<DartType> _buildAliasedTypeArguments(LibraryBuilder library,
124-
List<TypeBuilder>? arguments, ClassHierarchyBase? hierarchy) {
125-
if (arguments == null && typeParameters == null) {
126-
return <DartType>[];
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}
128-
129-
if (arguments == null && typeParameters != null) {
130-
List<DartType> result =
131-
new List<DartType>.generate(typeParameters!.length, (int i) {
132-
return typeParameters![i].defaultType!.buildAliased(
133-
library, TypeUse.defaultTypeAsTypeArgument, hierarchy);
134-
}, growable: true);
135-
if (library is SourceLibraryBuilder) {
136-
library.inferredTypes.addAll(result);
137-
}
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return result;
139-
}
140-
141-
if (arguments != null && arguments.length != typeVariablesCount) {
142-
// That should be caught and reported as a compile-time error earlier.
143-
return unhandled(
144-
templateTypeArgumentMismatch
145-
.withArguments(typeVariablesCount)
146-
.problemMessage,
147-
"buildTypeArguments",
148-
-1,
149-
null);
150-
}
151-
152-
assert(arguments!.length == typeVariablesCount);
153-
List<DartType> result =
154-
new List<DartType>.generate(arguments!.length, (int i) {
155-
return arguments[i]
156-
.buildAliased(library, TypeUse.typeArgument, hierarchy);
157-
}, growable: true);
158-
return result;
159-
}
160-
161-
@override
162-
void forEach(void f(String name, Builder builder)) {
163-
scope
164-
.filteredNameIterator(
165-
includeDuplicates: false, includeAugmentations: false)
166-
.forEach(f);
167-
}
168-
16971
@override
17072
bool get isExtension => true;
17173

172-
@override
173-
InterfaceType? get thisType => null;
174-
175-
@override
176-
Builder? lookupLocalMember(String name,
177-
{bool setter = false, bool required = false}) {
178-
// TODO(johnniwinther): Support patching on extensions.
179-
Builder? builder = scope.lookupLocalMember(name, setter: setter);
180-
if (required && builder == null) {
181-
internalProblem(
182-
templateInternalProblemNotFoundIn.withArguments(
183-
name, fullNameForErrors),
184-
-1,
185-
null);
186-
}
187-
return builder;
188-
}
189-
190-
@override
191-
Builder? lookupLocalMemberByName(Name name,
192-
{bool setter = false, bool required = false}) {
193-
Builder? builder =
194-
lookupLocalMember(name.text, setter: setter, required: required);
195-
if (builder == null && setter) {
196-
// When looking up setters, we include assignable fields.
197-
builder = lookupLocalMember(name.text, setter: false, required: required);
198-
if (builder is! FieldBuilder || !builder.isAssignable) {
199-
builder = null;
200-
}
201-
}
202-
if (builder != null) {
203-
if (name.isPrivate && libraryBuilder.library != name.library) {
204-
builder = null;
205-
} else if (builder is FieldBuilder &&
206-
!builder.isStatic &&
207-
!builder.isExternal) {
208-
// Non-external extension instance fields are invalid.
209-
builder = null;
210-
} else if (builder.isDuplicate) {
211-
// Duplicates are not visible in the instance scope.
212-
builder = null;
213-
} else if (builder is MemberBuilder && builder.isConflictingSetter) {
214-
// Conflicting setters are not visible in the instance scope.
215-
// TODO(johnniwinther): Should we return an [AmbiguousBuilder] here and
216-
// above?
217-
builder = null;
218-
}
219-
}
220-
return builder;
221-
}
222-
22374
@override
22475
String get debugName => "ExtensionBuilder";
22576
}

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