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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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Chromium Code Reviews
Issue 2554953004:
Revert "Add Kernel Isolate" (Closed)
