Implement support for specifying string interopolation style variable substitution in the import ...

bin/gen_snapshot.cc

 // Copyright (c) 2012, 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.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
@@ skipping 98 matching lines @@
   ASSERT(file != NULL);
   for (intptr_t i = 0; i < size; i++) {
     file->WriteByte(buffer[i]);
   }
   delete file;
 }
 
 
 static Dart_Handle CreateSnapshotLibraryTagHandler(Dart_LibraryTag tag,
                                                    Dart_Handle library,
-                                                   Dart_Handle url) {
+                                                   Dart_Handle url,
+                                                   Dart_Handle import_map) {
   if (!Dart_IsLibrary(library)) {
     return Dart_Error("not a library");
   }
   if (!Dart_IsString8(url)) {
     return Dart_Error("url is not a string");
   }
   const char* url_string = NULL;
   Dart_Handle result = Dart_StringToCString(url, &url_string);
   if (Dart_IsError(result)) {
     return Dart_Error("accessing url characters failed");
   }
 
   // If the URL starts with "dart:" then it is handled specially.
   bool is_dart_scheme_url = DartUtils::IsDartSchemeURL(url_string);
   if (tag == kCanonicalizeUrl) {
     if (is_dart_scheme_url) {
       return url;
     }
     return DartUtils::CanonicalizeURL(url_mapping, library, url_string);
   }
-  return DartUtils::LoadSource(url_mapping, library, url, tag, url_string);
+  return DartUtils::LoadSource(url_mapping,
+                               library,
+                               url,
+                               tag,
+                               url_string,
+                               import_map);
 }
 
 
 static Dart_Handle LoadSnapshotCreationScript(const char* script_name) {
   Dart_Handle source = DartUtils::ReadStringFromFile(script_name);
   if (Dart_IsError(source)) {
     return source;  // source contains the error string.
   }
   Dart_Handle url = Dart_NewString(script_name);
+  Dart_Handle import_map = Dart_NewList(0);
 
-  return Dart_LoadScript(url, source, CreateSnapshotLibraryTagHandler);
+  return Dart_LoadScript(url,
+                         source,
+                         CreateSnapshotLibraryTagHandler,
+                         import_map);
 }
 
 
 static Dart_Handle BuiltinLibraryTagHandler(Dart_LibraryTag tag,
                                             Dart_Handle library,
-                                            Dart_Handle url) {
+                                            Dart_Handle url,
+                                            Dart_Handle import_map) {
   if (!Dart_IsLibrary(library)) {
     return Dart_Error("not a library");
   }
   if (!Dart_IsString8(url)) {
     return Dart_Error("url is not a string");
   }
   const char* url_string = NULL;
   Dart_Handle result = Dart_StringToCString(url, &url_string);
   if (Dart_IsError(result)) {
     return Dart_Error("accessing url characters failed");
@@ skipping 12 matching lines @@
 static Dart_Handle LoadGenericSnapshotCreationScript(
     Builtin::BuiltinLibraryId id) {
   Dart_Handle source = Builtin::Source(id);
   if (Dart_IsError(source)) {
     return source;  // source contains the error string.
   }
   Dart_Handle lib;
   if (id == Builtin::kBuiltinLibrary) {
     // Load the dart:builtin library as the script.
     Dart_Handle url = Dart_NewString(DartUtils::kBuiltinLibURL);
-    lib = Dart_LoadScript(url, source, BuiltinLibraryTagHandler);
+    Dart_Handle import_map = Dart_NewList(0);
+    lib = Dart_LoadScript(url,
+                          source,
+                          BuiltinLibraryTagHandler,
+                          import_map);
   } else {
     ASSERT(id == Builtin::kIOLibrary);
     // Load the dart:io library to make it available in the snapshot
     // for importing.
     lib = Builtin::LoadLibrary(Builtin::kIOLibrary);
   }
   if (!Dart_IsError(lib)) {
     Builtin::SetupLibrary(lib, id);
   }
   return lib;
@@ skipping 85 matching lines @@
     exit(255);
   }
   // Now write the snapshot out to specified file and exit.
   WriteSnapshotFile(buffer, size);
   Dart_ExitScope();
 
   // Shutdown the isolate.
   Dart_ShutdownIsolate();
   return 0;
 }