Check for compile-time constants in DartCompiler

tests/language/src/StringInterpolate2Test.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.
 // Dart test program testing string interpolation of expressions.
 
 
 class StringInterpolate2Test {
 
-  static final F1 = "1 + 5 = ${1+5}";
+  static var F1;
 
   static void testMain() {
-
+  
+    F1 = "1 + 5 = ${1+5}";
+    
     Expect.equals("1 + 5 = 6", F1);
 
     var fib = [1, 1, 2, 3, 5, 8, 13, 21];
 
     var i = 5;
     var s = "${i}";
     Expect.equals("5", s);
 
     s = "fib(${i}) = ${fib[i]}";
     Expect.equals("fib(5) = 8", s);
 
     i = 5;
     s = "$i squared is ${((x) => x*x)(i)}";
     Expect.equals("5 squared is 25", s);
 
     Expect.equals("8", "${fib.length}");
+    // test single quote
+    Expect.equals("8", '${fib.length}');
+    // test multi-line
     Expect.equals("8", '${fib.
-        length}');
+    length}');

[zundel, 2011/10/17 10:43:49]

(here's what I did with the test in question)

 
     var map = { "red": 1, "green": 2, "blue": 3 };
     s = "green has value ${map["green"]}";
     Expect.equals("green has value 2", s);
 
     i = 0;
     b() => "${++i}";
     s = "aaa ${"bbb ${b()} bbb"} aaa ${b()}";
     Expect.equals("aaa bbb 1 bbb aaa 2", s);
 
     // test multiple levels of nesting, including changing quotes and
     // multiline string types
     s = "a ${(){ return 'b ${(){ return """
 c""";}()}'; }()} d";
     Expect.equals("a b c d", s);
   }
 }
 
 main() {
   StringInterpolate2Test.testMain();
 }