Preserve information about dots in numbers across parser rewriting.

test/cctest/test-parsing.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1133 matching lines @@
     CHECK_EQ(i::Token::MUL, bin->op());
     i::Literal* rlit = bin->right()->AsLiteral();
     const i::AstValue* val = rlit->raw_value();
     CHECK(with_dot == val->ContainsDot());
     CHECK_EQ(1.0, val->AsNumber());
   }
 }
 
 
 TEST(ParseNumbers) {
+  CheckParsesToNumber("1.", true);
   CheckParsesToNumber("1.34", true);
   CheckParsesToNumber("134", false);
   CheckParsesToNumber("134e44", false);
   CheckParsesToNumber("134.e44", true);
   CheckParsesToNumber("134.44e44", true);
   CheckParsesToNumber(".44", true);
+
+  CheckParsesToNumber("-1.", true);
+  CheckParsesToNumber("-1.0", true);
+  CheckParsesToNumber("-1.34", true);
+  CheckParsesToNumber("-134", false);
+  CheckParsesToNumber("-134e44", false);
+  CheckParsesToNumber("-134.e44", true);
+  CheckParsesToNumber("-134.44e44", true);
+  CheckParsesToNumber("-.44", true);
+
   CheckParsesToNumber("+x", true);
 }
 
 
 TEST(ScopePositions) {
   // Test the parser for correctly setting the start and end positions
   // of a scope. We check the scope positions of exactly one scope
   // nested in the global scope of a program. 'inner source' is the
   // source code that determines the part of the source belonging
   // to the nested scope. 'outer_prefix' and 'outer_suffix' are
@@ skipping 6313 matching lines @@
                               "var publ\\u0069c = 1;",
                               "var { publ\\u0069c } = {};",
                               NULL};
   RunParserSyncTest(sloppy_context_data, valid_data, kSuccess, NULL, 0,
                     always_flags, arraysize(always_flags));
   RunParserSyncTest(strict_context_data, valid_data, kError, NULL, 0,
                     always_flags, arraysize(always_flags));
   RunModuleParserSyncTest(strict_context_data, valid_data, kError, NULL, 0,
                           always_flags, arraysize(always_flags));
 }