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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 // This is an interface to the Dart Kernel parser and Kernel binary generator. | |
6 // It is used by the kernel-isolate to load Dart source code and generate | |
7 // Kernel binary format. | |
8 | |
9 import 'dart:isolate'; | |
10 import 'dart:async'; | |
11 import "dart:io"; | |
12 import "dart:typed_data"; | |
13 | |
14 import 'package:kernel/binary/ast_to_binary.dart'; | |
15 import 'package:kernel/analyzer/loader.dart'; | |
16 import 'package:kernel/kernel.dart'; | |
17 import 'package:kernel/target/targets.dart'; | |
18 | |
19 bool verbose = false; | |
20 | |
21 final RawReceivePort scriptLoadPort = new RawReceivePort(); | |
22 | |
23 | |
24 bool checkIsFile(String path) { | |
25 var stat = new File(path).statSync(); | |
26 switch (stat.type) { | |
27 case FileSystemEntityType.DIRECTORY: | |
28 return false; | |
29 case FileSystemEntityType.NOT_FOUND: | |
30 return false; | |
31 } | |
32 return true; | |
33 } | |
34 | |
35 | |
36 void checkSdkDirectory(String path) { | |
37 var stat = new File(path).statSync(); | |
38 switch (stat.type) { | |
39 case FileSystemEntityType.DIRECTORY: | |
40 case FileSystemEntityType.LINK: | |
41 return true; | |
42 default: | |
43 return false; | |
44 } | |
45 } | |
46 | |
47 | |
48 class DataSink implements StreamSink<List<int>> { | |
49 var buffer = []; | |
50 add(List<int> data) { | |
51 buffer.addAll(data); | |
52 } | |
53 close() { | |
54 // Nothing to do. | |
55 } | |
56 } | |
57 | |
58 | |
59 List writeProgramToBuffer(Program program) { | |
60 var sink = new DataSink(); | |
61 try { | |
62 new BinaryPrinter(sink).writeProgramFile(program); | |
63 } finally { | |
64 sink.close(); | |
65 } | |
66 return new Uint8List.fromList(sink.buffer); | |
67 } | |
68 | |
69 | |
70 Future parseScript(Uri fileName, String packageConfig, String sdkPath) async { | |
71 | |
72 if (!checkIsFile(fileName.path)) { | |
73 throw "Input file '${fileName.path}' does not exist."; | |
74 } | |
75 | |
76 if (!checkSdkDirectory(sdkPath)) { | |
77 throw "Patched sdk directory not found at $sdkPath"; | |
78 } | |
79 | |
80 Target target = getTarget("vm", new TargetFlags(strongMode: false)); | |
81 DartOptions dartOptions = new DartOptions( | |
82 strongMode: false, | |
83 strongModeSdk: false, | |
84 sdk: sdkPath, | |
85 packagePath: packageConfig, | |
86 customUriMappings: {}, | |
87 declaredVariables: {}); | |
88 DartLoader loader = | |
89 await new DartLoaderBatch().getLoader(new Repository(), dartOptions); | |
90 var program = loader.loadProgram(fileName, target: target); | |
91 | |
92 var errors = loader.errors; | |
93 if (errors.isNotEmpty) { | |
94 throw loader.errors.first; | |
95 } | |
96 | |
97 // Link program into one file, cf. --link option in dartk | |
98 target.transformProgram(program); | |
99 | |
100 return writeProgramToBuffer(program); | |
101 } | |
102 | |
103 | |
104 _processLoadRequest(request) { | |
105 if (verbose) { | |
106 print("FROM DART KERNEL: load request: $request"); | |
107 print("FROM DART KERNEL: package: ${Platform.packageConfig}"); | |
108 print("FROM DART KERNEL: exec: ${Platform.resolvedExecutable}"); | |
109 } | |
110 int tag = request[0]; | |
111 SendPort sp = request[1]; | |
112 String inputFileUrl = request[2]; | |
113 Uri scriptUri = Uri.parse(inputFileUrl); | |
114 Uri packagesUri = Uri.parse(Platform.packageConfig ?? ".packages"); | |
115 Uri patched_sdk = Uri.parse(Platform.resolvedExecutable).resolve("patched_sdk"
); | |
116 | |
117 var parsingDone = parseScript(scriptUri, packagesUri.path, patched_sdk.path); | |
118 | |
119 parsingDone | |
120 .then((data) { | |
121 var msg = new List(5); | |
122 msg[0] = tag; | |
123 msg[1] = inputFileUrl; | |
124 msg[2] = inputFileUrl; | |
125 msg[3] = null; | |
126 msg[4] = data; | |
127 sp.send(msg); | |
128 return; | |
129 }) | |
130 .catchError((e) { | |
131 var msg = new List(5); | |
132 msg[0] = -tag; | |
133 msg[1] = inputFileUrl; | |
134 msg[2] = inputFileUrl; | |
135 msg[3] = null; | |
136 msg[4] = e.toString(); | |
137 sp.send(msg); | |
138 }); | |
139 } | |
140 | |
141 | |
142 main() { | |
143 scriptLoadPort.handler = _processLoadRequest; | |
144 Timer.run(() {}); | |
145 return scriptLoadPort; | |
146 } | |
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