Fraction class prototype and test (not to be committed).

runtime/vm/token.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 VM_TOKEN_H_
 #define VM_TOKEN_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 
@@ skipping 103 matching lines @@
   /* Internal token for !(expr is Type) negative type test operator */         \
   TOK(kISNOT, "", 11, kNoAttribute)                                            \
                                                                                \
   TOK(kINDEX, "[]", 0, kNoAttribute)                                           \
   TOK(kASSIGN_INDEX, "[]=", 0, kNoAttribute)                                   \
   TOK(kNEGATE, "unary-", 0, kNoAttribute)                                      \
                                                                                \
   TOK(kIDENT, "", 0, kNoAttribute)                                             \
   TOK(kSTRING, "", 0, kNoAttribute)                                            \
   TOK(kINTEGER, "", 0, kNoAttribute)                                           \
+  TOK(kRATIONAL, "", 0, kNoAttribute)                                          \
   TOK(kDOUBLE, "", 0, kNoAttribute)                                            \
                                                                                \
   TOK(kINTERPOL_VAR, "$", 0, kNoAttribute)                                     \
   TOK(kINTERPOL_START, "${", 0, kNoAttribute)                                  \
   TOK(kINTERPOL_END, "}", 0, kNoAttribute)                                     \
                                                                                \
   TOK(kAT, "@", 0, kNoAttribute)                                               \
   TOK(kHASH, "#", 0, kNoAttribute)                                             \
                                                                                \
   TOK(kNEWLINE, "\n", 0, kNoAttribute)                                         \
@@ skipping 151 matching lines @@
            (tok == kINDEX) ||
            (tok == kASSIGN_INDEX);
   }
 
   static bool NeedsLiteralToken(Kind tok) {
     ASSERT(tok < kNumTokens);
     return ((tok == Token::kINTEGER) ||
             (tok == Token::kSTRING) ||
             (tok == Token::kINTERPOL_VAR) ||
             (tok == Token::kERROR) ||
+            (tok == Token::kRATIONAL) ||
             (tok == Token::kDOUBLE));
   }
 
   static bool IsBinaryOperator(Token::Kind token);
   static bool IsUnaryOperator(Token::Kind token);
 
   static bool IsBinaryArithmeticOperator(Token::Kind token);
   static bool IsUnaryArithmeticOperator(Token::Kind token);
 
   // For a comparison operation return an operation for the negated comparison:
@@ skipping 19 matching lines @@
  private:
   static const char* name_[];
   static const char* tok_str_[];
   static const uint8_t precedence_[];
   static const Attribute attributes_[];
 };
 
 }  // namespace dart
 
 #endif  // VM_TOKEN_H_