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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 import '../compiler.dart'; | |
6 import '../common/names.dart'; | |
7 import '../elements/elements.dart'; | |
8 import '../kernel/kernel.dart'; | |
9 import 'package:kernel/ast.dart' as ir; | |
10 | |
11 import 'backend.dart'; | |
12 | |
13 /// Visits the compiler main function and builds the kernel representation. | |
14 /// | |
15 /// This creates a mapping from kernel nodes to AST nodes to be used later. | |
16 class KernelTask { | |
17 final Compiler _compiler; | |
18 final Kernel kernel; | |
19 | |
20 KernelTask(JavaScriptBackend backend) | |
21 : this._compiler = backend.compiler, | |
22 this.kernel = new Kernel(backend.compiler); | |
23 | |
24 ir.Program program; | |
25 | |
26 /// Builds the kernel IR for the main function. | |
27 /// | |
28 /// May enqueue more elements to the resolution queue. | |
29 void buildKernelIr() { | |
30 program = buildProgram(_compiler.mainApp); | |
31 } | |
32 | |
33 /// Builds the kernel IR program for the main function exported from | |
34 /// [library]. | |
35 /// | |
36 /// May enqueue more elements to the resolution queue. | |
37 ir.Program buildProgram(LibraryElement library) { | |
38 return new ir.Program(kernel.libraryDependencies(library.canonicalUri)) | |
39 ..mainMethod = | |
40 kernel.functionToIr(library.findExported(Identifiers.main)); | |
41 } | |
42 } | |
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