Update tests, fix printing of doubles.

runtime/vm/object.cc

 // 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.
 
 #include "vm/object.h"
 
 #include "vm/assembler.h"
 #include "vm/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
@@ skipping 5244 matching lines @@
   }
   if (isinf(value())) {
     return value() < 0 ? "-Infinity" : "Infinity";
   }
   const char* kFormat = "%f";
   // Calculate the size of the string.
   intptr_t len = OS::SNPrint(NULL, 0, kFormat, value()) + 1;
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len));
   OS::SNPrint(chars, len, kFormat, value());
+  // Eliminate trailing 0s, but leave one digit after '.'.

[hausner, 2011/11/09 19:32:01]

Doesn't the %f format specifier suppress trailing 0 digits already?

Also, your solution doesn't work for floating point numbers with an exponent.

[srdjan, 2011/11/09 21:48:55]

Unfortunately it doesn't.
%f does not print an exponent at all.

This is a stop-gap solution until we have added floitsch's FP printing code.

+  // 'chars' is null terminated.
+  for (intptr_t i = len - 2; i >= 1; i--) {
+    if ((chars[i] == '0') && (chars[i - 1] != '.')) {
+      chars[i] = '\0';
+    } else {
+      break;
+    }
+  }
   return chars;
 }
 
 
 bool Bigint::Equals(const Instance& other) const {
   if (this->raw() == other.raw()) {
     // Both handles point to the same raw instance.
     return true;
   }
 
@@ skipping 1669 matching lines @@
   const String& str = String::Handle(pattern());
   const char* format = "JSRegExp: pattern=%s flags=%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, str.ToCString(), Flags());
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len + 1));
   OS::SNPrint(chars, (len + 1), format, str.ToCString(), Flags());
   return chars;
 }
 
 }  // namespace dart