Allow numeric literals to be checked for a decimal point.

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 1082 matching lines @@
         CHECK(scope->LookupThis()->is_used());
       }
       CHECK_EQ((source_data[i].expected & INNER_ARGUMENTS) != 0,
                scope->inner_uses_arguments());
       CHECK_EQ((source_data[i].expected & EVAL) != 0, scope->calls_eval());
     }
   }
 }
 
 
+static void CheckParsesToNumber(const char* source, bool with_dot) {
+  v8::V8::Initialize();
+  HandleAndZoneScope handles;
+
+  i::Isolate* isolate = CcTest::i_isolate();
+  i::Factory* factory = isolate->factory();
+
+  std::string full_source = "function f() { return ";
+  full_source += source;
+  full_source += "; }";
+
+  i::Handle<i::String> source_code =
+      factory->NewStringFromUtf8(i::CStrVector(full_source.c_str()))
+          .ToHandleChecked();
+
+  i::Handle<i::Script> script = factory->NewScript(source_code);
+
+  i::ParseInfo info(handles.main_zone(), script);
+  i::Parser parser(&info);
+  parser.set_allow_harmony_arrow_functions(true);
+  parser.set_allow_harmony_sloppy(true);
+  info.set_global();
+  info.set_lazy(false);
+  info.set_allow_lazy_parsing(false);
+  info.set_toplevel(true);
+
+  i::CompilationInfo compilation_info(&info);
+  CHECK(i::Compiler::ParseAndAnalyze(&info));
+
+  CHECK(info.scope()->declarations()->length() == 1);
+  i::FunctionLiteral* fun =
+      info.scope()->declarations()->at(0)->AsFunctionDeclaration()->fun();
+  CHECK(fun->body()->length() == 1);
+  CHECK(fun->body()->at(0)->IsReturnStatement());
+  i::ReturnStatement* ret = fun->body()->at(0)->AsReturnStatement();
+  CHECK(ret->expression()->IsLiteral());
+  i::Literal* lit = ret->expression()->AsLiteral();
+  const i::AstValue* val = lit->raw_value();
+  CHECK(with_dot == val->ContainsDot());
+}
+
+
+TEST(ParseNumbers) {
+  CheckParsesToNumber("1.34", true);
+  CheckParsesToNumber("134", false);
+  CheckParsesToNumber("134e44", false);
+  CheckParsesToNumber("134.e44", true);
+  CheckParsesToNumber("134.44e44", true);
+  CheckParsesToNumber(".44", 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
   // parts of the source that belong to the global scope.
   struct SourceData {
     const char* outer_prefix;
     const char* inner_source;
@@ skipping 5590 matching lines @@
     kAllowHarmonyNewTarget,
     kAllowHarmonySloppy,
   };
   // clang-format on
 
   RunParserSyncTest(good_context_data, data, kSuccess, NULL, 0, always_flags,
                     arraysize(always_flags));
   RunParserSyncTest(bad_context_data, data, kError, NULL, 0, always_flags,
                     arraysize(always_flags));
 }