pkg/compiler/lib/src/js_backend/kernel_task.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.

import '../compiler.dart';
import '../kernel/kernel.dart';
import 'package:kernel/ast.dart' as ir;

import 'backend.dart';

/// Visits the compiler main function and builds the kernel representation.
///
/// This creates a mapping from kernel nodes to AST nodes to be used later.
class KernelTask {
  final Compiler _compiler;
  final Kernel kernel;

  KernelTask(JavaScriptBackend backend)
      : this._compiler = backend.compiler,
        this.kernel = new Kernel(backend.compiler);

  ir.Program program;

  /// Builds the kernel IR for the main function.
  ///
  /// May enqueue more elements to the resolution queue.
  void buildKernelIr() {
    program =
        new ir.Program(kernel.libraryDependencies(_compiler.options.entryPoint))
          ..mainMethod = kernel.functionToIr(_compiler.mainFunction);
  }
}