// Flags for language modes and experimental language features.
DEFINE_bool(use_strict, false, "enforce strict mode")
+DEFINE_bool(es52_globals, false,
+ "activate new semantics for global var declarations")
DEFINE_bool(harmony_typeof, false, "enable harmony semantics for typeof")
DEFINE_bool(harmony_scoping, false, "enable harmony block scoping")
// value of the variable if the property is already there.
// Do the lookup locally only, see ES5 errata.
LookupResult lookup(isolate);
- global->LocalLookup(*name, &lookup);
+ if (FLAG_es52_globals)
+ global->LocalLookup(*name, &lookup);
+ else
+ global->Lookup(*name, &lookup);
if (lookup.IsProperty()) {
// We found an existing property. Unless it was an interceptor
// that claims the property is absent, skip this declaration.
// Check that a variable declaration with no explicit initialization
// value does shadow an existing property in the prototype chain.
THREADED_TEST(InitGlobalVarInProtoChain) {
+ i::FLAG_es52_globals = true;
v8::HandleScope scope;
LocalContext context;
// Introduce a variable in the prototype chain.
TEST(ExistsInPrototype) {
+ i::FLAG_es52_globals = true;
HandleScope scope;
// Sanity check to make sure that the holder of the interceptor
TEST(AbsentInPrototype) {
+ i::FLAG_es52_globals = true;
HandleScope scope;
{ AbsentInPrototypeContext context;
// This exercises the code in runtime.cc in
// DeclareGlobal...Locally().
+// Flags: --es52_globals
+
this.__proto__.foo = 42;
this.__proto__.bar = 87;
// Test runtime declaration of properties with var which are intercepted
// by JS accessors.
+// Flags: --es52_globals
+
this.__defineSetter__("x", function() { hasBeenInvoked = true; });
this.__defineSetter__("y", function() { throw 'exception'; });
// Test that a function declaration cannot overwrite a read-only property.
+// Flags: --es52_globals
+
function foobl() {}
assertTrue(typeof this.foobl == "function");
assertTrue(Object.getOwnPropertyDescriptor(this, "foobl").writable);
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// Flags: --es52_globals
+
var setter_value = 0;
this.__defineSetter__("a", function(v) { setter_value = v; });