Read SDK and patches from a JSON file.

pkg/front_end/lib/src/fasta/fasta.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.
 
 library fasta;
 
 import 'dart:async' show Future;
 
 import 'dart:convert' show JSON;
 
@@ skipping 106 matching lines @@
     return new DillTarget(ticker, uriTranslator, c.options.target);
   }
 
   KernelTarget createKernelTarget(
       DillTarget dillTarget, TranslateUri uriTranslator, bool strongMode) {
     return new KernelTarget(
         c.fileSystem, dillTarget, uriTranslator, strongMode, c.uriToSource);
   }
 
   Future<KernelTarget> buildOutline([Uri output]) async {
-    TranslateUri uriTranslator = await TranslateUri.parse(
-        c.fileSystem, c.options.sdk, c.options.packages);
+    TranslateUri uriTranslator = await TranslateUri
+        .parse(c.fileSystem, c.options.sdk, packages: c.options.packages);
     ticker.logMs("Read packages file");
     DillTarget dillTarget = createDillTarget(uriTranslator);
     KernelTarget kernelTarget =
         createKernelTarget(dillTarget, uriTranslator, c.options.strongMode);
     if (c.options.strongMode) {
       print("Note: strong mode support is preliminary and may not work.");
     }
     Uri platform = c.options.platform;
     if (platform != null) {
       _appendDillForUri(dillTarget, platform);
@@ skipping 48 matching lines @@
           formatUnexpected(fileName, -1, "No such file."));
     }
     if (!await new Directory.fromUri(patchedSdk).exists()) {
       return new CompilationResult.error(
           formatUnexpected(patchedSdk, -1, "Patched sdk directory not found."));
     }
 
     Program program;
     try {
       TranslateUri uriTranslator =
-          await TranslateUri.parse(fileSystem, null, packages);
+          await TranslateUri.parse(fileSystem, null, packages: packages);
       final Ticker ticker = new Ticker(isVerbose: verbose);
       final DillTarget dillTarget =
           new DillTarget(ticker, uriTranslator, backendTarget);
       _appendDillForUri(dillTarget, patchedSdk.resolve('platform.dill'));
       final KernelTarget kernelTarget =
           new KernelTarget(fileSystem, dillTarget, uriTranslator, strongMode);
       kernelTarget.read(fileName);
       await dillTarget.buildOutlines();
       await kernelTarget.buildOutlines();
       program = await kernelTarget.buildProgram();
@@ skipping 37 matching lines @@
     c.options.options["--packages"] = packages;
     if (verbose) {
       c.options.options["--verbose"] = true;
     }
     return compilePlatformInternal(
         c, ticker, patchedSdk, fullOutput, outlineOutput);
   });
 }
 
 Future writeDepsFile(Uri script, Uri depsFile, Uri output,
-    {Uri packages,
+    {Uri sdk,
+    Uri packages,
     Uri platform,
     Iterable<Uri> extraDependencies,
     bool verbose: false,
     String backendTarget}) async {
   backendTarget ??= "vm";
   Ticker ticker = new Ticker(isVerbose: verbose);
   await CompilerCommandLine.withGlobalOptions("", [""],
       (CompilerContext c) async {
     c.options.options["--packages"] = packages;
     if (verbose) {
       c.options.options["--verbose"] = true;
     }
+    sdk ??= c.options.sdk;
 
-    TranslateUri uriTranslator = await TranslateUri.parse(
-        c.fileSystem, c.options.sdk, c.options.packages);
+    TranslateUri uriTranslator = await TranslateUri.parse(c.fileSystem, sdk,
+        packages: c.options.packages);
     ticker.logMs("Read packages file");
     DillTarget dillTarget =
         new DillTarget(ticker, uriTranslator, backendTarget);
     _appendDillForUri(dillTarget, platform);
     KernelTarget kernelTarget = new KernelTarget(PhysicalFileSystem.instance,
         dillTarget, uriTranslator, false, c.uriToSource);
 
     kernelTarget.read(script);
     await dillTarget.buildOutlines();
     await kernelTarget.loader.buildOutlines();
@@ skipping 16 matching lines @@
   final BytesBuilder builder = new BytesBuilder();
 
   void add(List<int> data) {
     builder.add(data);
   }
 
   void close() {
     // Nothing to do.
   }
 }