Remove the isString and isArray flags in Managed

These are not needed anymore, as we have the type stored
in the object.

Change-Id: I86594f4c3b3669ee0576e1ca141a64494e82a176
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

qv4argumentsobject.cpp

@@ -76,7 +76,7 @@ ArgumentsObject::ArgumentsObject(ExecutionContext *context, int formalParameterC
             __defineOwnProperty__(context, i, &pd);
         }
         defineDefaultProperty(context, QStringLiteral("callee"), Value::fromObject(context->function));
-        isArgumentsObject = true;
+        isNonStrictArgumentsObject = true;
     }
 }
 
@@ -97,12 +97,12 @@ bool ArgumentsObject::defineOwnProperty(ExecutionContext *ctx, uint index, const
         pd->value = mappedArguments.at(index);
     }
 
-    isArgumentsObject = false;
+    isNonStrictArgumentsObject = false;
     bool strict = ctx->strictMode;
     ctx->strictMode = false;
     bool result = Object::__defineOwnProperty__(ctx, index, desc);
     ctx->strictMode = strict;
-    isArgumentsObject = true;
+    isNonStrictArgumentsObject = true;
 
     if (isMapped && desc->isData()) {
         if (desc->type != PropertyDescriptor::Generic) {

qv4arrayobject.cpp

@@ -103,7 +103,7 @@ void ArrayPrototype::init(ExecutionContext *ctx, const Value &ctor)
 
 uint ArrayPrototype::getLength(ExecutionContext *ctx, Object *o)
 {
-    if (o->isArray)
+    if (o->isArrayObject())
         return o->array.length();
     return o->__get__(ctx, ctx->engine->id_length).toUInt32(ctx);
 }
@@ -213,7 +213,7 @@ Value ArrayPrototype::method_pop(ExecutionContext *ctx)
     uint len = getLength(ctx, instance);
 
     if (!len) {
-        if (!instance->isArray)
+        if (!instance->isArrayObject())
             instance->__put__(ctx, ctx->engine->id_length, Value::fromInt32(0));
         return Value::undefinedValue();
     }
@@ -221,7 +221,7 @@ Value ArrayPrototype::method_pop(ExecutionContext *ctx)
     Value result = instance->__get__(ctx, len - 1);
 
     instance->__delete__(ctx, len - 1);
-    if (instance->isArray)
+    if (instance->isArrayObject())
         instance->array.setLengthUnchecked(len - 1);
     else
         instance->__put__(ctx, ctx->engine->id_length, Value::fromDouble(len - 1));
@@ -241,7 +241,7 @@ Value ArrayPrototype::method_push(ExecutionContext *ctx)
             instance->__put__(ctx, idx.toString(ctx), ctx->argument(i));
         }
         double newLen = l + ctx->argumentCount;
-        if (!instance->isArray)
+        if (!instance->isArrayObject())
             instance->__put__(ctx, ctx->engine->id_length, Value::fromDouble(newLen));
         else
             ctx->throwRangeError(Value::fromString(ctx, QStringLiteral("Array.prototype.push: Overflow")));
@@ -264,7 +264,7 @@ Value ArrayPrototype::method_push(ExecutionContext *ctx)
             instance->__put__(ctx, len + i, ctx->argument(i));
     }
     uint newLen = len + ctx->argumentCount;
-    if (!instance->isArray)
+    if (!instance->isArrayObject())
         instance->__put__(ctx, ctx->engine->id_length, Value::fromDouble(newLen));
 
     if (newLen < INT_MAX)
@@ -302,7 +302,7 @@ Value ArrayPrototype::method_shift(ExecutionContext *ctx)
     uint len = getLength(ctx, instance);
 
     if (!len) {
-        if (!instance->isArray)
+        if (!instance->isArrayObject())
             instance->__put__(ctx, ctx->engine->id_length, Value::fromInt32(0));
         return Value::undefinedValue();
     }
@@ -330,7 +330,7 @@ Value ArrayPrototype::method_shift(ExecutionContext *ctx)
         instance->__delete__(ctx, len - 1);
     }
 
-    if (!instance->isArray)
+    if (!instance->isArrayObject())
         instance->__put__(ctx, ctx->engine->id_length, Value::fromDouble(len - 1));
     return result;
 }
@@ -474,7 +474,7 @@ Value ArrayPrototype::method_unshift(ExecutionContext *ctx)
             instance->__put__(ctx, i, ctx->argument(i));
     }
     uint newLen = len + ctx->argumentCount;
-    if (!instance->isArray)
+    if (!instance->isArrayObject())
         instance->__put__(ctx, ctx->engine->id_length, Value::fromDouble(newLen));
 
     if (newLen < INT_MAX)
@@ -506,7 +506,7 @@ Value ArrayPrototype::method_indexOf(ExecutionContext *ctx)
         fromIndex = (uint) f;
     }
 
-    if (instance->isString) {
+    if (instance->isStringObject()) {
         for (uint k = fromIndex; k < len; ++k) {
             bool exists;
             Value v = instance->__get__(ctx, k, &exists);

qv4jsonobject.cpp

@@ -895,7 +895,7 @@ Value JsonObject::method_stringify(ExecutionContext *ctx)
     Object *o = ctx->argument(1).asObject();
     if (o) {
         stringify.replacerFunction = o->asFunctionObject();
-        if (o->isArray) {
+        if (o->isArrayObject()) {
             for (uint i = 0; i < o->array.length(); ++i) {
                 Value v = o->__get__(ctx, i);
                 if (v.asNumberObject() || v.asStringObject() || v.isNumber())

qv4managed.h

@@ -76,7 +76,7 @@ private:
 
 protected:
     Managed() : markBit(0), inUse(1), extensible(true),
-        isArray(false), isArgumentsObject(false), isString(false), isBuiltinFunction(false), type(Type_Object), unused(0) { }
+        isNonStrictArgumentsObject(false), isBuiltinFunction(false), type(Type_Object), unused(0) { }
     virtual ~Managed();
 
 public:
@@ -116,6 +116,9 @@ public:
     ArgumentsObject *asArgumentsObject() { return type == Type_ArgumentsObject ? reinterpret_cast<ArgumentsObject *>(this) : 0; }
     ForeachIteratorObject *asForeachIteratorObject() { return type == Type_ForeachIteratorObject ? reinterpret_cast<ForeachIteratorObject *>(this) : 0; }
 
+    bool isArrayObject() const { return type == Type_ArrayObject; }
+    bool isStringObject() const { return type == Type_StringObject; }
+
 protected:
     virtual void markObjects() = 0;
 
@@ -125,18 +128,16 @@ protected:
             quintptr markBit :  1;
             quintptr inUse   :  1;
             quintptr extensible : 1; // used by Object
-            quintptr isArray : 1; // used by Object & Array
-            quintptr isArgumentsObject : 1;
-            quintptr isString : 1; // used by Object & StringObject
+            quintptr isNonStrictArgumentsObject : 1;
             quintptr isBuiltinFunction : 1; // used by FunctionObject
             quintptr needsActivation : 1; // used by FunctionObject
             quintptr usesArgumentsObject : 1; // used by FunctionObject
             quintptr strictMode : 1; // used by FunctionObject
             quintptr type : 4;
 #if CPU(X86_64)
-            quintptr unused  : 50;
+            quintptr unused  : 51;
 #elif CPU(X86)
-            quintptr unused  : 18;
+            quintptr unused  : 19;
 #else
 #error "implement me"
 #endif

qv4object.cpp

@@ -209,7 +209,7 @@ PropertyDescriptor *Object::__getOwnProperty__(ExecutionContext *ctx, uint index
     PropertyDescriptor *p = array.at(index);
     if(p && p->type != PropertyDescriptor::Generic)
         return p;
-    if (isString)
+    if (isStringObject())
         return static_cast<StringObject *>(this)->getIndex(ctx, index);
 
     return 0;
@@ -241,7 +241,7 @@ PropertyDescriptor *Object::__getPropertyDescriptor__(ExecutionContext *ctx, uin
         PropertyDescriptor *p = o->array.at(index);
         if(p && p->type != PropertyDescriptor::Generic)
             return p;
-        if (o->isString) {
+        if (o->isStringObject()) {
             p = static_cast<StringObject *>(o)->getIndex(ctx, index);
             if (p)
                 return p;
@@ -306,7 +306,7 @@ void Object::__put__(ExecutionContext *ctx, String *name, Value value)
                 goto reject;
         } else if (!pd->isWritable())
             goto reject;
-        else if (isArray && name->isEqualTo(ctx->engine->id_length)) {
+        else if (isArrayObject() && name->isEqualTo(ctx->engine->id_length)) {
             bool ok;
             uint l = value.asArrayLength(ctx, &ok);
             if (!ok)
@@ -492,7 +492,7 @@ bool Object::__defineOwnProperty__(ExecutionContext *ctx, String *name, const Pr
 
     PropertyDescriptor *current;
 
-    if (isArray && name->isEqualTo(ctx->engine->id_length)) {
+    if (isArrayObject() && name->isEqualTo(ctx->engine->id_length)) {
         PropertyDescriptor *lp = array.getLengthProperty();
         if (desc->isEmpty() || desc->isSubset(lp))
             return true;
@@ -541,10 +541,10 @@ bool Object::__defineOwnProperty__(ExecutionContext *ctx, uint index, const Prop
     PropertyDescriptor *current;
 
     // 15.4.5.1, 4b
-    if (isArray && index >= array.length() && !array.getLengthProperty()->isWritable())
+    if (isArrayObject() && index >= array.length() && !array.getLengthProperty()->isWritable())
         goto reject;
 
-    if (isArgumentsObject)
+    if (isNonStrictArgumentsObject)
         return static_cast<ArgumentsObject *>(this)->defineOwnProperty(ctx, index, desc);
 
     // Clause 1
@@ -647,7 +647,6 @@ Value Object::call(ExecutionContext *context, Value , Value *, int)
 void ArrayObject::init(ExecutionContext *context)
 {
     type = Type_ArrayObject;
-    isArray = true;
 
     if (!members)
         members.reset(new PropertyTable());

qv4stringobject.cpp

@@ -79,7 +79,6 @@ StringObject::StringObject(ExecutionContext *ctx, const Value &value)
     : value(value)
 {
     type = Type_StringObject;
-    isString = true;
 
     tmpProperty.type = PropertyDescriptor::Data;
     tmpProperty.enumberable = PropertyDescriptor::Enabled;