Convert raw strings to new syntax

tests/standalone/status_expression_test.dart

 // Copyright (c) 2011, 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("StatusExpressionTest");
 
 #import("../../tools/testing/dart/status_expression.dart");
 
 
 class StatusExpressionTest {
   static void testMain() {
     test1();
     test2();
     test3();
     test4();
     test5();
     test6();
   }
 
   static void test1() {
     Tokenizer tokenizer = new Tokenizer(
-        @" $mode == debug && ($arch == chromium || $arch == dartc) ");
+        r" $mode == debug && ($arch == chromium || $arch == dartc) ");
     tokenizer.tokenize();
     Expect.listEquals(tokenizer.tokens,
         ["\$", "mode", "==", "debug", "&&", "(", "\$", "arch", "==",
          "chromium", "||", "\$", "arch", "==", "dartc", ")"]);
     ExpressionParser parser =
         new ExpressionParser(new Scanner(tokenizer.tokens));
     BooleanExpression ast = parser.parseBooleanExpression();
     Expect.equals(
-        @"(($mode == debug) && (($arch == chromium) || ($arch == dartc)))",
+        r"(($mode == debug) && (($arch == chromium) || ($arch == dartc)))",
         ast.toString());
     // Test BooleanExpression.evaluate().
     Map environment = new Map();
     environment["arch"] = "dartc";
     environment["mode"] = "debug";
     Expect.isTrue(ast.evaluate(environment));
     environment["mode"] = "release";
     Expect.isFalse(ast.evaluate(environment));
     environment["arch"] = "ia32";
     Expect.isFalse(ast.evaluate(environment));
     environment["mode"] = "debug";
     Expect.isFalse(ast.evaluate(environment));
     environment["arch"] = "chromium";
     Expect.isTrue(ast.evaluate(environment));
   }
 
   static void test2() {
     Tokenizer tokenizer = new Tokenizer(
-        @"($arch == dartc || $arch == chromium) && $mode == release");
+        r"($arch == dartc || $arch == chromium) && $mode == release");
     tokenizer.tokenize();
     Expect.listEquals(
         tokenizer.tokens,
         ["(", "\$", "arch", "==", "dartc", "||", "\$", "arch", "==",
         "chromium", ")", "&&", "\$", "mode", "==", "release"]);
   }
 
   static void test3() {
     var thrown;
-    String input = @" $mode == debug && ($arch==chromium || *$arch == dartc)";
+    String input = r" $mode == debug && ($arch==chromium || *$arch == dartc)";
     Tokenizer tokenizer = new Tokenizer(input);
     try {
       tokenizer.tokenize();
     } on Exception catch (e) {
       thrown = e;
     }
     Expect.equals("Syntax error in '$input'", thrown.toString());
   }
 
   static void test4() {
     var thrown;
     String input =
-        @"($arch == (-dartc || $arch == chromium) && $mode == release";
+        r"($arch == (-dartc || $arch == chromium) && $mode == release";
     Tokenizer tokenizer = new Tokenizer(input);
     try {
       tokenizer.tokenize();
     } on Exception catch (e) {
       thrown = e;
     }
     Expect.equals("Syntax error in '$input'", thrown.toString());
   }
 
   static void test5() {
     Tokenizer tokenizer = new Tokenizer(
-        @"Skip , Pass if $arch == dartc, Fail || Timeout if "
-        @"$arch == chromium && $mode == release");
+        r"Skip , Pass if $arch == dartc, Fail || Timeout if "
+        r"$arch == chromium && $mode == release");
     tokenizer.tokenize();
     ExpressionParser parser =
         new ExpressionParser(new Scanner(tokenizer.tokens));
     SetExpression ast = parser.parseSetExpression();
     Expect.equals(
-        @"((skip || (pass if ($arch == dartc))) || ((fail || timeout) "
-        @"if (($arch == chromium) && ($mode == release))))",
+        r"((skip || (pass if ($arch == dartc))) || ((fail || timeout) "
+        r"if (($arch == chromium) && ($mode == release))))",
         ast.toString());
 
     // Test SetExpression.evaluate().
     Map environment = new Map();
     environment["arch"] = "ia32";
     environment["checked"] = true;
     environment["mode"] = "debug";
     Set<String> result = ast.evaluate(environment);
     Expect.setEquals(["skip"], result);
 
     environment["arch"] = "dartc";
     result = ast.evaluate(environment);
     Expect.setEquals(["skip", "pass"], result);
 
     environment["arch"] = "chromium";
     result = ast.evaluate(environment);
     Expect.setEquals(["skip"], result);
 
     environment["mode"] = "release";
     result = ast.evaluate(environment);
     Expect.setEquals(["skip", "fail", "timeout"], result);
   }
 
   static void test6() {
     Tokenizer tokenizer = new Tokenizer(
-      @"  $arch == ia32 && $checked || $mode == release    ");
+      r"  $arch == ia32 && $checked || $mode == release    ");
     tokenizer.tokenize();
     ExpressionParser parser =
         new ExpressionParser(new Scanner(tokenizer.tokens));
     BooleanExpression ast = parser.parseBooleanExpression();
     Expect.equals(
-        @"((($arch == ia32) && (bool $checked)) || ($mode == release))",
+        r"((($arch == ia32) && (bool $checked)) || ($mode == release))",
         ast.toString());
 
     // Test BooleanExpression.evaluate().
     Map environment = new Map();
     environment["arch"] = "ia32";
     environment["checked"] = true;
     environment["mode"] = "debug";
     Expect.isTrue(ast.evaluate(environment));
     environment["mode"] = "release";
     Expect.isTrue(ast.evaluate(environment));
     environment["checked"] = false;
     Expect.isTrue(ast.evaluate(environment));
     environment["mode"] = "debug";
     Expect.isFalse(ast.evaluate(environment));
     environment["arch"] = "arm";
     Expect.isFalse(ast.evaluate(environment));
     environment["checked"] = true;
     Expect.isFalse(ast.evaluate(environment));
   }
 }
 
 main() {
   StatusExpressionTest.testMain();
 }