Add missing files from last commit!

platform/assert.h

 // 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.
 
 #ifndef PLATFORM_ASSERT_H_
 #define PLATFORM_ASSERT_H_
 
 // TODO(5411406): include sstream for now, once we have a Utils::toString()
 // implemented for all the primitive types we can replace the usage of
 // sstream by Utils::toString()
@@ skipping 250 matching lines @@
 
 #else  // if defined(DEBUG)
 
 // In order to avoid variable unused warnings for code that only uses
 // a variable in an ASSERT or EXPECT, we make sure to use the macro
 // argument.
 #define ASSERT(condition) do {} while (false && (condition))
 
 #define DEBUG_ASSERT(cond)
 
+// The COMPILE_ASSERT macro can be used to verify that a compile time
+// expression is true. For example, you could use it to verify the
+// size of a static array:
+//
+//   COMPILE_ASSERT(ARRAYSIZE(content_type_names) == CONTENT_NUM_TYPES,
+//                  content_type_names_incorrect_size);
+//
+// or to make sure a struct is smaller than a certain size:
+//
+//   COMPILE_ASSERT(sizeof(foo) < 128, foo_too_large);
+//
+// The second argument to the macro is the name of the variable. If
+// the expression is false, most compilers will issue a warning/error
+// containing the name of the variable.
+
+template <bool>
+struct CompileAssert {
+};
+
+#define COMPILE_ASSERT(expr, msg)                       \
+  typedef CompileAssert<(static_cast<bool>(expr))>      \
+  msg[static_cast<bool>(expr) ? 1 : -1]
+
 #endif  // if defined(DEBUG)
 
 
 #if defined(TESTING)
 #define EXPECT(condition)                                                      \
   if (!(condition)) {                                                          \
     dart::Expect(__FILE__, __LINE__).Fail("expected: %s", #condition);         \
   }
 
 #define EXPECT_EQ(expected, actual)                                            \
@@ skipping 38 matching lines @@
 #define WARN(error)                                                           \
   dart::Expect(__FILE__, __LINE__).Fail("%s", error)
 
 #define WARN1(format, p1)                                                     \
   dart::Expect(__FILE__, __LINE__).Fail(format, (p1))
 
 #define WARN2(format, p1, p2)                                                 \
   dart::Expect(__FILE__, __LINE__).Fail(format, (p1), (p2))
 
 #endif  // PLATFORM_ASSERT_H_