Fasta builders.

pkg/fasta/lib/src/builder/class_builder.dart

+// Copyright (c) 2016, 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.
+
+library fasta.class_builder;
+
+import 'builder.dart' show
+    Builder,
+    ConstructorReferenceBuilder,
+    LibraryBuilder,
+    MetadataBuilder,
+    TypeBuilder,
+    TypeDeclarationBuilder,
+    TypeVariableBuilder;
+
+import 'scope.dart' show
+    AmbiguousBuilder,
+    Scope;
+
+abstract class ClassBuilder<T extends TypeBuilder, R>
+    extends TypeDeclarationBuilder<T, R> {
+  final List<TypeVariableBuilder> typeVariables;
+
+  T supertype;
+
+  List<T> interfaces;
+
+  final Map<String, Builder> members;
+
+  ClassBuilder(
+      List<MetadataBuilder> metadata, int modifiers,
+      String name, this.typeVariables, this.supertype, this.interfaces,
+      this.members, List<T> types, LibraryBuilder parent)
+      : super(metadata, modifiers, name, types, parent);
+
+  List<ConstructorReferenceBuilder> get constructorReferences => null;
+
+  Map<String, Builder> get constructors;
+
+  Map<String, Builder> get membersInScope => members;
+
+  int resolveTypes(LibraryBuilder library) {
+    Scope scope;
+    int count = 0;
+    if (types != null) {
+      scope = computeInstanceScope(library.scope);
+      for (T t in types) {
+        t.resolveIn(scope);
+      }
+      count += types.length;
+    }
+    return count;
+  }
+
+  int resolveConstructors(LibraryBuilder library) {
+    if (constructorReferences == null) return 0;
+    Scope scope = computeInstanceScope(library.scope);
+    for (ConstructorReferenceBuilder ref in constructorReferences) {
+      ref.resolveIn(scope);
+    }
+    return constructorReferences.length;
+  }
+
+  Scope computeInstanceScope(Scope parent) {
+    if (typeVariables != null) {
+      Map<String, Builder> local = <String, Builder>{};
+      for (TypeVariableBuilder t in typeVariables) {
+        local[t.name] = t;
+      }
+      parent = new Scope(local, parent, isModifiable: false);
+    }
+    return new Scope(membersInScope, parent, isModifiable: false);
+  }
+
+  /// Used to lookup a static member of this class.
+  Builder findStaticBuilder(String name, {bool isSetter: false}) {
+    Builder builder = members[name];
+    if (builder?.next != null) {
+      Builder getterBuilder;
+      Builder setterBuilder;
+      Builder current = builder;
+      while (current != null) {
+        if (current.isGetter && getterBuilder == null) {
+          getterBuilder = current;
+        } else if (current.isSetter && setterBuilder == null) {
+          setterBuilder = current;
+        } else {
+          return new AmbiguousBuilder(builder);
+        }
+        current = current.next;
+      }
+      builder = isSetter ? setterBuilder : getterBuilder;
+    }
+    if (builder == null) {
+      return null;
+    } else if (isSetter && builder.isGetter) {
+      return null;
+    } else {
+      return builder.isInstanceMember ? null : builder;
+    }
+  }
+
+  Builder findConstructorOrFactory(String name);
+}