// Copyright (c) 2012, 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 native;

import 'dart:collection' show Queue;

import '../constants/values.dart';
import '../dart2jslib.dart';
import '../dart_types.dart';
import '../elements/elements.dart';
import '../elements/modelx.dart'
    show ClassElementX, FunctionElementX, LibraryElementX;
import '../js/js.dart' as js;
import '../js_backend/js_backend.dart';
import '../js_emitter/js_emitter.dart' show CodeEmitterTask, NativeEmitter;
import '../resolution/resolution.dart' show ResolverVisitor;
import '../scanner/scannerlib.dart';
import '../ssa/ssa.dart';
import '../tree/tree.dart';
import '../universe/universe.dart' show SideEffects;
import '../util/util.dart';

part 'behavior.dart';
part 'enqueue.dart';
part 'js.dart';
part 'scanner.dart';
part 'ssa.dart';

void maybeEnableNative(Compiler compiler,
                       LibraryElementX library) {
  String libraryName = library.canonicalUri.toString();
  if (library.entryCompilationUnit.script.name.contains(
          'dart/tests/compiler/dart2js_native')
      || libraryName == 'dart:async'
      || libraryName == 'dart:html'
      || libraryName == 'dart:html_common'
      || libraryName == 'dart:indexed_db'
      || libraryName == 'dart:js'
      || libraryName == 'dart:svg'
      || libraryName == 'dart:_native_typed_data'
      || libraryName == 'dart:web_audio'
      || libraryName == 'dart:web_gl'
      || libraryName == 'dart:web_sql'
      || compiler.allowNativeExtensions) {
    library.canUseNative = true;
  }
}

// The tags string contains comma-separated 'words' which are either dispatch
// tags (having JavaScript identifier syntax) and directives that begin with
// `!`.
List<String> nativeTagsOfClassRaw(ClassElement cls) {
  String quotedName = cls.nativeTagInfo;
  return quotedName.substring(1, quotedName.length - 1).split(',');
}

List<String> nativeTagsOfClass(ClassElement cls) {
  return nativeTagsOfClassRaw(cls).where((s) => !s.startsWith('!')).toList();
}

bool nativeTagsForcedNonLeaf(ClassElement cls) =>
    nativeTagsOfClassRaw(cls).contains('!nonleaf');