зеркало из https://github.com/mozilla/gecko-dev.git
877 строки
29 KiB
C++
877 строки
29 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef JAVAOBJECT_H
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#define JAVAOBJECT_H
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#include "Fundamentals.h"
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#include "InterfaceDispatchTable.h"
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#include "LogModule.h"
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// A TypeKind describes the basic kind of a Java value.
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// See also Value.h.
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enum TypeKind
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{ // Size Primitive kind? Final?
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tkVoid, // 0 yes yes
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tkBoolean, // 1 yes yes
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tkUByte, // 1 yes yes
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tkByte, // 1 yes yes
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tkChar, // 2 yes yes
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tkShort, // 2 yes yes
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tkInt, // 4 yes yes
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tkLong, // 8 yes yes
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tkFloat, // 4 yes yes
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tkDouble, // 8 yes yes
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tkObject, // 4 no sometimes // Java objects
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tkSpecial, // 4 no yes // Internal, non-java objects; not used at this time
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tkArray, // 4 no sometimes // Java arrays
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tkInterface // 4 no no // Java interfaces
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};
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const uint nPrimitiveTypeKinds = tkDouble + 1;
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const uint nTypeKinds = tkInterface + 1;
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inline bool NS_EXTERN isPrimitiveKind(TypeKind tk) {return tk <= tkDouble;}
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inline bool NS_EXTERN isNonVoidPrimitiveKind(TypeKind tk) {return tk >= tkBoolean && tk <= tkDouble;}
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inline bool NS_EXTERN isDoublewordKind(TypeKind tk) {return tk == tkLong || tk == tkDouble;}
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inline int NS_EXTERN getTypeKindSize(TypeKind tk);
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inline int NS_EXTERN getLgTypeKindSize(TypeKind tk);
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inline int NS_EXTERN nTypeKindSlots(TypeKind tk);
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inline bool NS_EXTERN getTypeKindFromDescriptor(char c, TypeKind &tk);
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#ifdef DEBUG
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// Flags for dumping objects and arrays
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#define PRINT_ARRAY_INDICES 0x01
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#define PRINT_OBJECT_TYPE 0x02
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#define PRINT_STATIC_FIELDS 0x04
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#define PRINT_DEFAULT_FLAGS PRINT_OBJECT_TYPE
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#endif
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// ----------------------------------------------------------------------------
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struct Type;
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struct Class;
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struct Interface;
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struct Package;
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struct Field;
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struct Method;
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struct Constructor;
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class ClassCentral;
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class ClassFileSummary;
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// A JavaObject is the header of any Java object.
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// It contains just one field -- a pointer to the object's type.
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// An actual Java object's fields follow after the end of the JavaEnd structure.
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struct NS_EXTERN JavaObject
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{
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const Type* type; // Pointer to the object's type
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Int32 state; // contains lock and gc state, and possibly hash id
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explicit JavaObject(const Type &type): type(&type), state(0x3) {}
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public:
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inline const Type &getType() const { return *type; }
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inline const Class &getClass() const;
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#ifdef DEBUG
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void printValue(LogModuleObject &f,
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int maxRecursion = 0,
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Uint32 printFlags = PRINT_DEFAULT_FLAGS,
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const char *newlineString = NULL,
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Vector<JavaObject *> *printedObjects = NULL);
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#endif
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};
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const Int32 objectTypeOffset = 0; // Offset from object address to its type pointer word
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typedef JavaObject *obj;
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typedef const JavaObject *cobj;
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inline ptr objToPtr(obj o) {return reinterpret_cast<ptr>(o);}
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inline cptr objToPtr(cobj o) {return reinterpret_cast<cptr>(o);}
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inline obj ptrToObj(ptr o) {return reinterpret_cast<obj>(o);}
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inline cobj ptrToObj(cptr o) {return reinterpret_cast<cobj>(o);}
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// ----------------------------------------------------------------------------
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// A JavaArray is the header of any Java array.
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// It contains only two field -- a pointer to the object's type and a
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// number of elements.
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// An actual Java array's elements follow after the end of the JavaArray structure.
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struct NS_EXTERN JavaArray: JavaObject
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{
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const Uint32 length; // Number of elements in this array
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JavaArray(const Type &type, Uint32 length): JavaObject(type), length(length) {}
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JavaObject *get(Int32 index);
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Int8 getBoolean(Int32 index);
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char getByte(Int32 index);
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Int16 getChar(Int32 index);
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Int16 getShort(Int32 index);
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Int32 getInt(Int32 index);
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Int64 getLong(Int32 index);
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Flt32 getFloat(Int32 index);
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Flt64 getDouble(Int32 index);
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void set(Int32 index, JavaObject *obj);
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void setBoolean(Int32 index, Int8 value);
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void setByte(Int32 index, char value);
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void setChar(Int32 index, Int16 value);
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void setShort(Int32 index, Int16 value);
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void setInt(Int32 index, Int32 value);
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void setLong(Int32 index, Int64 value);
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void setFloat(Int32 index, Flt32 value);
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void setDouble(Int32 index, Flt64 value);
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private:
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void *getRaw(Int32 index);
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bool isPrimitive();
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};
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// Offset from array address to its length word
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const Int32 arrayLengthOffset = offsetof(JavaArray, length);
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// Offset from array address to its first element, equivalent to arrayEltsOffset(tkObject)
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const Int32 arrayObjectEltsOffset = sizeof(JavaArray);
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// ----------------------------------------------------------------------------
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// A vtable contains two kinds of entries:
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// Method pointers that point to code (either actual code or stubs that
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// load the actual code);
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// Class pointers that point to superclasses.
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//
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// The method pointers are used for dispatching methods inherited from
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// superclasses. The Class pointers are used for quickly determining
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// whether an object belongs to a particular class.
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union VTableEntry
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{
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void *codePtr; // Pointer to method
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Class *classPtr; // Pointer to superclass
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void *classOrCodePtr; // One of the above
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};
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struct Array;
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class InterfaceDispatchTable;
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// A Type describes the contents of a Java object.
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// It's also itself a special kind of Java object.
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struct NS_EXTERN Type: JavaObject
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{
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const TypeKind typeKind ENUM_8; // Kind of objects described here
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const bool final BOOL_8; // True if this type cannot have any subtypes. Note that, by this
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// definition, an array type is final if its element type is final.
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const Uint32 nVTableSlots; // Number of vtable slots for this class; zero if there is no vtable
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const VTableOffset *interfaceVIndexTable; // Table for mapping interface to first VIndex in interface's VTable
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const Uint16 *interfaceAssignableTable; // Table for determining if instance is assignable to an interface type
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Uint16 assignableMatchValue; // Used to compare with entry in interfaceAssignableTable
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private:
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mutable const Array *arrayType; // Type of arrays whose components have this Type or null if none declared yet
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protected: // This is an abstract class
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Type(const Type &metaType, const Type *superType, TypeKind typeKind, bool final, Uint32 nVTableSlots,
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VTableOffset *interfaceVIndexTable = 0, Uint16 *interfaceAssignableTable = 0):
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JavaObject(metaType), typeKind(typeKind), final(final), nVTableSlots(nVTableSlots),
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interfaceVIndexTable(interfaceVIndexTable),
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interfaceAssignableTable(interfaceAssignableTable),
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arrayType(0), superType(superType) {}
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const Type *superType;
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public:
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const Array &getArrayType() const;
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const Type *getSuperType() const {return superType;};
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const Type *getSuperClass() const;
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Uint32 getInterfaceNumber() const;
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VTableEntry &getVTableEntry(Uint32 vIndex) const;
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void setVTableEntry(Uint32 vIndex, void *classOrCodePtr);
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// Returns true if the current class object describes an interface.
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bool isInterface() const {return (typeKind == tkInterface);}
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bool isArray() const {return (typeKind == tkArray);}
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// Returns true if this class describes a primitive type
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bool isPrimitive() const {return isPrimitiveKind(typeKind); }
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// Returns true if the type represented by the specified Class parameter
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// can be converted to the type represented by this class object.
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bool isAssignableFrom(const Type &from) const;
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// Returns true if the object represented by obj is an instance of this class
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bool isInstance(JavaObject &obj) const {return (&obj.getType() == this ||
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isAssignableFrom(obj.getType()));}
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// Returns the modifiers (access flags) for this class object.
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Uint32 getModifiers() const;
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// Returns the fully qualified name of the class; unlike toString(),
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// does not prepend "class " in front of the name
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const char *getName() const;
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#ifdef DEBUG_LOG
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int printRef(LogModuleObject &f) const;
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#endif
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};
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inline Type &asType(JavaObject &o);
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bool implements(const Type &sub, const Type &super);
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// A Type for void, boolean, ubyte, byte, char, short, int, long, float, or double.
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struct NS_EXTERN PrimitiveType: Type
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{
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private:
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static const PrimitiveType *primitiveTypes[nPrimitiveTypeKinds];
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// Only initPrimitiveTypes can construct PrimitiveType instances.
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PrimitiveType(const Type &metaType, TypeKind typeKind): Type(metaType, NULL, typeKind, true, 0, 0) { }
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public:
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static const PrimitiveType &obtain(TypeKind tk);
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static const PrimitiveType *getClass(const char* className);
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static void staticInit();
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const char *getName() const;
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char getSignatureEncoding() const;
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};
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inline const PrimitiveType &asPrimitiveType(const Type &t)
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{
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assert(isPrimitiveKind(t.typeKind));
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return *static_cast<const PrimitiveType *>(&t);
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}
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// A Type for any array.
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struct NS_EXTERN Array: Type
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{
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const Type &componentType; // Type of components of this array
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private:
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mutable const char *fullName; // Fully qualified name of the array
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// Unique serial number among all interfaces and arrays of interfaces
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Uint32 interfaceNumber;
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InterfaceDispatchTable *interfaceDispatchTable;
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static const Array *primitiveArrays[nPrimitiveTypeKinds];
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explicit Array(const Type &componentType, const Type &superType,
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Uint32 nVTableSlots);
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void buildAssignabilityTableForInterfaces();
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public:
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static Array &make(const Type &componentType);
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static const Array &obtain(TypeKind elementKind);
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const Type &getElementType() const;
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const Type &getElementType(int &numDimensions) const;
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const Type &getComponentType() const {return componentType;};
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// Used for arrays of interfaces
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Uint32 getInterfaceNumber() const {
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assert(getElementType().typeKind == tkInterface);
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return interfaceNumber;
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}
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#ifdef DEBUG
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void printValue(LogModuleObject &f, JavaArray *array,
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int maxRecursion = 0,
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Uint32 printFlags = PRINT_DEFAULT_FLAGS,
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const char *newlineString = NULL,
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Vector<JavaObject *> *printedObjects = NULL) const;
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#endif
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// Returns the fully qualified name of the class; unlike toString(),
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// does not prepend "class " in front of the name
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const char *getName() const;
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#ifdef DEBUG_LOG
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int printRef(LogModuleObject &f) const;
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#endif
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static void staticInit();
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};
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inline const Array &asArray(const Type &t) {
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assert(t.typeKind == tkArray);
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return *static_cast<const Array*>(&t);
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}
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// ----------------------------------------------------------------------------
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// An abstract class that contains information common to Class and
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// Interface objects.
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struct NS_EXTERN ClassOrInterface: Type
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{
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Package &package; // The package that defines this class or interface
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const char * /*const*/ name; // Unqualified name of the class or interface (stored in the ClassWorld's pool)
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private:
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mutable const char *fullName; // Fully qualified name of the class or interface
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mutable const char *declName; // Class declaration, as returned by toString()
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public:
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const Uint32 nInterfaces; // Number of interfaces implemented directly by this class or interface
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Interface **interfaces; // Array of nInterfaces interfaces implemented directly by this class or interface
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static ClassCentral *central; // Repository of loaded classes
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ClassFileSummary *summary; // Class loader for this class, NULL if none
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bool initialized;
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// Run all the static initializers of this class
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void runStaticInitializers();
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bool isInitialized() { return initialized; }
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protected:
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ClassOrInterface(const Type &metaType, TypeKind typeKind,
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const Class *parent,
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bool final,
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Uint32 nVTableSlots, Package &package,
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const char *name, Uint32 nInterfaces,
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Interface **interfaces,
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ClassFileSummary *summary,
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VTableOffset *interfaceVIndexTable = 0,
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Uint16 *interfaceAssignableTable = 0);
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public:
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#ifdef DEBUG_LOG
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int printRef(LogModuleObject &f) const;
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#endif
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// Set the value of the ClassCentral object. This should be done
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// only once.
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static void setCentral(ClassCentral *c) { central = c; }
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// Returns fully qualified name of the class/interface in the form
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// "class <classname>" or "interface <interfacename>"
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const char *toString() const;
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// Returns the fully qualified name of the class; unlike toString(),
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// does not prepend "class " in front of the name
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const char *getName() const;
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// Returns the modifiers (access flags) for this class object.
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Uint32 getModifiers() const;
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// Returns the class loader object for this class. Need to think about
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// this a little bit.
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// ClassLoader getClassLoader() const;
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// Returns summaries for the interfaces of this class.
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// If this class object represents a class, returns an array containing
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// objects representing the interfaces directly implemented by the class.
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// If this Class object represents an interface, returns an array
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// containing objects representing the direct superinterfaces of the
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// interface. Returns number of array interfaces actually returned.
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// This number could be zero, if the class is a primitive type or
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// implements no interfaces.
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Int32 getInterfaces(Interface **&summaries) const;
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// If this class or interface is a member of another class, returns the
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// class object representing the class of which it is a member. If this is
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// not the case, returns NULL. Hmmm. Need to think about how to implement
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// this.
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// Class *getDeclaringClass();
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// Returns an array containing class objects representing all the public
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// classes and interfaces that are members of the class represented by this
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// class object. Returns number of class objects returned.
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Int32 getClasses(Class **&summaries);
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// Returns an array containing information about the public fields of this
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// object. Returns number of fields in object.
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Int32 getFields(const Field **&fields);
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// Returns an array containing information about the public methods of
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// this object. Returns number of fields in object.
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Int32 getMethods(const Method **&methods);
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// Returns an array containing information about the public constructors of
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// this object. Returns number of constructors.
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Int32 getConstructors(const Constructor **&constructors);
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// Look up fields/methods/constructors. These methods search through
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// publicly accessible fields/methods/constructors. They throw a
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// runtimeError on failure.
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Field &getField(const char *name);
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Method &getMethod(const char *name, const Type *parameterTypes[],
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Int32 numParams);
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// Look up a method based on its name and signature. This routine searches
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// only in the current class, and does not search in superclasses.
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// If publicOrProtected is true, only public and protected methods are searched;
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// otherwise, all declared methods are examined. If the method was not found,
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// returns NULL.
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Method *getMethod(const char *name, const char *sig, bool publicOrProtcted);
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Constructor &getConstructor(const Type *parameterTypes[],
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Int32 numParams);
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// The following functions deal with *all* declared fields, methods, or
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// constructors, be they public, protected, or private.
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Int32 getDeclaredClasses(Class **&summaries);
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Int32 getDeclaredFields(const Field **&fields);
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Int32 getDeclaredMethods(const Method **&methods);
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Int32 getDeclaredConstructors(const Constructor **&constructors);
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Field &getDeclaredField(const char *name);
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Method &getDeclaredMethod(const char *name, const Type *parameterTypes[],
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Int32 numParams);
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Constructor &getDeclaredConstructor(const Type *parameterTypes[],
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Int32 numParams);
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private:
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void getFullNames() const;
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};
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// Runtime reflection information about a class, such as its inheritance
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// hierarchy, fields and field layout, etc.
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// A Class remains in memory as long as a class is alive. It does
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// not keep track of a class's constant pool, etc.
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struct NS_EXTERN Class: ClassOrInterface
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{
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Uint32 instanceSize; // Size of instance objects in bytes
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private:
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Class(Package &package, const char *name, const Class *parent, Uint32 nInterfaces, Interface **interfaces,
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ClassFileSummary *summary, bool final, Uint32 instanceSize, Uint32 nVTableSlots,
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VTableOffset *interfaceVOffsetTable, Uint16 *interfaceAssignableTable);
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Class(bool isOwnClass, const char *name, Uint32 instanceSize, Uint32 nVTableSlots);
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public:
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static Class &make(Package &package, const char *name, const Class *parent, Uint32 nInterfaces, Interface **interfaces,
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ClassFileSummary *summary, bool final, Uint32 extraSize, Uint32 nExtraVTableSlots,
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VTableOffset *interfaceVOffsetTable,
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Uint16 *interfaceAssignableTable);
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// Given a fully qualified className, attempts to load and link the class
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// and returns the corresponding Class object. The name could be of
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// the form java/lang/Object or java.lang.Object .
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static Class &forName(const char *className);
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// Ensure that the object obj is a primitive class and
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// return the raw primitive value corresponding to the class,
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// converted to a Uint32.
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static Uint32 getPrimitiveValue(JavaObject &obj);
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// Creates an instance of the class if the class is instantiable.
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JavaObject &newInstance();
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static JavaObject &makePrimitiveObject(TypeKind tk, void *address);
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JavaObject *clone(JavaObject &inObj) const;
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#ifdef DEBUG
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void printValue(LogModuleObject &f, JavaObject *obj,
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int maxRecursion = 0,
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Uint32 printFlags = PRINT_DEFAULT_FLAGS,
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const char *newlineString = NULL,
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Vector<JavaObject *> *printedObjects = NULL);
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#endif
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private:
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static Class &makeSpecial(bool isOwnClass, const char *name, Uint32 instanceSize, Uint32 nVTableSlots);
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void setParent(const Class &p);
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public:
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|
const Class *getParent() const;
|
|
bool implements(const Class &c) const;
|
|
bool implements(const Interface &i) const;
|
|
|
|
friend class Standard; // Standard needs to call makeSpecial and explicitly set the parents of the first few classes created
|
|
// for bootstrapping reasons.
|
|
};
|
|
|
|
inline const Class &asClass(const Type &t);
|
|
|
|
const Uint32 vTableOffset = sizeof(Class); // Offset from a Type to beginning of its vtable
|
|
inline Int32 vTableIndexToOffset(Uint32 vIndex) {return (Int32)(vTableOffset + vIndex*sizeof(VTableEntry));}
|
|
|
|
struct NS_EXTERN Interface: ClassOrInterface
|
|
{
|
|
private:
|
|
// Unique serial number among all interfaces and arrays of interfaces
|
|
Uint32 interfaceNumber;
|
|
|
|
public:
|
|
Interface(Package &package, const char *name, Uint32 nInterfaces,
|
|
Interface **interfaces,
|
|
ClassFileSummary *summary);
|
|
|
|
bool implements(const Interface &i) const;
|
|
|
|
void addInterfaceArraysToAssignableTable(InterfaceDispatchTable *interfaceDispatchTable,
|
|
int numDimensions);
|
|
|
|
Uint32 getInterfaceNumber() const {return interfaceNumber;};
|
|
};
|
|
inline const Interface &asInterface(const Type &t);
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Standard objects
|
|
|
|
|
|
// Standard classes
|
|
enum StandardClass {
|
|
cNone,
|
|
cObject, // java.lang.Object
|
|
cPrimitiveType, // internal variant of java.lang.Class
|
|
cPrimitiveArray, // internal variant of java.lang.Class
|
|
cObjectArray, // internal variant of java.lang.Class
|
|
cClass, // internal variant of java.lang.Class
|
|
cInterface, // internal variant of java.lang.Class
|
|
cField, // internal variant of java.lang.Field
|
|
cMethod, // internal variant of java.lang.Method
|
|
cConstructor, // internal variant of java.lang.Constructor
|
|
cThrowable, // java.lang.Throwable
|
|
cException, // java.lang.Exception
|
|
cRuntimeException, // java.lang.RuntimeException
|
|
cArithmeticException, // java.lang.ArithmeticException
|
|
cArrayStoreException, // java.lang.ArrayStoreException
|
|
cClassCastException, // java.lang.ClassCastException
|
|
cIllegalMonitorStateException, // java.lang.illegalMonitorStateException
|
|
cArrayIndexOutOfBoundsException,// java.lang.ArrayIndexOutOfBoundsException
|
|
cNegativeArraySizeException, // java.lang.NegativeArraySizeException
|
|
cNullPointerException, // java.lang.NullPointerException
|
|
cError, // java.lang.Error
|
|
cThreadDeath, // java.lang.ThreadDeath
|
|
cBoolean, // java.lang.Boolean
|
|
cByte, // java.lang.Byte
|
|
cCharacter, // java.lang.Character
|
|
cShort, // java.lang.Short
|
|
cInteger, // java.lang.Integer
|
|
cLong, // java.lang.Long
|
|
cFloat, // java.lang.Float
|
|
cDouble, // java.lang.Double
|
|
cString, // java.lang.String
|
|
cInterruptedException // java.lang.InterruptedException
|
|
};
|
|
const uint nStandardClasses = cString + 1;
|
|
const uint firstOrdinaryStandardClass = cThrowable;
|
|
|
|
// Standard interfaces
|
|
enum StandardInterface {
|
|
iCloneable // java.lang.Cloneable
|
|
};
|
|
const uint nStandardInterfaces = iCloneable + 1;
|
|
|
|
|
|
// Standard objects
|
|
enum StandardObject {
|
|
oArithmeticException, // new java.lang.ArithmeticException()
|
|
oArrayStoreException, // new java.lang.ArrayStoreException()
|
|
oClassCastException, // new java.lang.ClassCastException()
|
|
oIllegalMonitorStateException, // new java.lang.IllegalMonitorStateException
|
|
oArrayIndexOutOfBoundsException,// new java.lang.ArrayIndexOutOfBoundsException()
|
|
oNegativeArraySizeException, // new java.lang.NegativeArraySizeException()
|
|
oNullPointerException, // new java.lang.NullPointerException()
|
|
oInterruptedException // new java.lang.InterruptedException()
|
|
};
|
|
const uint nStandardObjects = oNullPointerException + 1;
|
|
|
|
|
|
class NS_EXTERN Standard
|
|
{
|
|
static const Class *standardClasses[nStandardClasses];
|
|
static const Interface *standardInterfaces[nStandardInterfaces];
|
|
static const JavaObject *standardObjects[nStandardObjects];
|
|
|
|
public:
|
|
static bool isPrimitiveWrapperClass(const Class &clazz, TypeKind *tk = 0);
|
|
static bool isDoubleWordPrimitiveWrapperClass(const Class &clazz);
|
|
static const Class &get(StandardClass sc) {assert(standardClasses[sc]); return *standardClasses[sc];}
|
|
static const Interface &get(StandardInterface si) {assert(standardInterfaces[si]); return *standardInterfaces[si];}
|
|
static const JavaObject &get(StandardObject so) {assert(standardObjects[so]); return *standardObjects[so];}
|
|
|
|
static void initStandardObjects(ClassCentral &c);
|
|
};
|
|
|
|
|
|
// --- INLINES ----------------------------------------------------------------
|
|
|
|
extern const NS_EXTERN Int8 typeKindSizes[nTypeKinds];
|
|
|
|
//
|
|
// Return the number of bytes taken by a value that has the given TypeKind.
|
|
//
|
|
inline int getTypeKindSize(TypeKind tk)
|
|
{
|
|
assert((uint)tk < nTypeKinds);
|
|
return typeKindSizes[tk];
|
|
}
|
|
|
|
|
|
extern const NS_EXTERN Int8 lgTypeKindSizes[nTypeKinds];
|
|
//
|
|
// Return the base-2 logarithm of the number of bytes taken by a value
|
|
// that has the given TypeKind.
|
|
//
|
|
inline int getLgTypeKindSize(TypeKind tk)
|
|
{
|
|
assert((uint)tk < nTypeKinds);
|
|
return lgTypeKindSizes[tk];
|
|
}
|
|
|
|
|
|
extern const Int8 typeKindNSlots[nTypeKinds];
|
|
//
|
|
// Return the number of environment slots taken by a value that has the
|
|
// given TypeKind.
|
|
//
|
|
inline int nTypeKindSlots(TypeKind tk)
|
|
{
|
|
assert((uint)tk < nTypeKinds);
|
|
return typeKindNSlots[tk];
|
|
}
|
|
|
|
|
|
//
|
|
// If c is the descriptor for a primitive type, sets tk to the
|
|
// typeKind of c and returns true. Else, returns false.
|
|
//
|
|
inline bool getTypeKindFromDescriptor(char c, TypeKind &tk)
|
|
{
|
|
bool ret = true;
|
|
|
|
switch (c) {
|
|
case 'B':
|
|
tk = tkByte;
|
|
break;
|
|
|
|
case 'C':
|
|
tk = tkChar;
|
|
break;
|
|
|
|
case 'D':
|
|
tk = tkDouble;
|
|
break;
|
|
|
|
case 'F':
|
|
tk = tkFloat;
|
|
break;
|
|
|
|
case 'I':
|
|
tk = tkInt;
|
|
break;
|
|
|
|
case 'J':
|
|
tk = tkLong;
|
|
break;
|
|
|
|
case 'S':
|
|
tk = tkShort;
|
|
break;
|
|
|
|
case 'Z':
|
|
tk = tkBoolean;
|
|
break;
|
|
|
|
default:
|
|
ret = false;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
//
|
|
// Return the type of arrays whose elements have this Type.
|
|
//
|
|
inline const Array &Type::getArrayType() const
|
|
{
|
|
if (arrayType)
|
|
return *arrayType;
|
|
arrayType = &Array::make(*this);
|
|
return *arrayType;
|
|
}
|
|
|
|
|
|
//
|
|
// Assert that this JavaObject is really a Type and return that Type.
|
|
//
|
|
inline Type &asType(JavaObject &o)
|
|
{
|
|
const Type *type = &o.getType();
|
|
|
|
assert(type &&
|
|
(type == &Standard::get(cPrimitiveType) ||
|
|
type == &Standard::get(cPrimitiveArray) ||
|
|
type == &Standard::get(cObjectArray) ||
|
|
type == &Standard::get(cClass) ||
|
|
type == &Standard::get(cInterface)));
|
|
return *static_cast<Type *>(&o);
|
|
}
|
|
|
|
inline Type &asType(const Array &o) {
|
|
return *static_cast<Type *>(const_cast<Array *>(&o));
|
|
}
|
|
|
|
inline Type &asType(const Class &o) {
|
|
return *static_cast<Type *>(const_cast<Class *>(&o));
|
|
}
|
|
|
|
//
|
|
// Return the primitive type corresponding to the given TypeKind.
|
|
//
|
|
inline const PrimitiveType &PrimitiveType::obtain(TypeKind tk)
|
|
{
|
|
assert(isPrimitiveKind(tk) && primitiveTypes[tk]);
|
|
return *primitiveTypes[tk];
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// Return a PrimitiveArray corresponding to the given TypeKind.
|
|
//
|
|
inline const Array &Array::obtain(TypeKind elementKind)
|
|
{
|
|
assert(isNonVoidPrimitiveKind(elementKind) && primitiveArrays[elementKind]);
|
|
return *primitiveArrays[elementKind];
|
|
}
|
|
|
|
// Return the offset from an array's address to its first element.
|
|
inline int arrayEltsOffset(TypeKind tk)
|
|
{
|
|
assert((uint)tk < nTypeKinds);
|
|
int lgtks = lgTypeKindSizes[tk];
|
|
|
|
// Round up address so elements are aligned
|
|
return (((sizeof(JavaArray) + typeKindSizes[tk] - 1) >> lgtks) << lgtks);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
//
|
|
// Assert that this Type is really a Class and return that Class.
|
|
//
|
|
inline const Class &asClass(const Type &t)
|
|
{
|
|
assert(t.typeKind == tkObject);
|
|
return *static_cast<const Class *>(&t);
|
|
}
|
|
|
|
inline const Class &JavaObject::getClass() const {
|
|
return asClass(getType());
|
|
}
|
|
|
|
//
|
|
// Assert that this Type is really an Interface and return that Interface.
|
|
//
|
|
inline const Interface &asInterface(const Type &t)
|
|
{
|
|
assert(t.typeKind == tkInterface);
|
|
return *static_cast<const Interface *>(&t);
|
|
}
|
|
|
|
//
|
|
// Initialize a new ClassOrInterface object. metaType is the type of
|
|
// the ClassOrInterface object -- either cClass or cInterface.
|
|
// size is the size of instances of this class; size is zero if this is Interface
|
|
// instead of a Class.
|
|
// package is the package that defined this class or interface, name is the unqualified
|
|
// name of this class or interface, and interfaces is an array of nInterfaces elements
|
|
// that lists all interfaces from which this class or interface derives except that,
|
|
// if this is a Class, the interfaces array does not include interfaces from which
|
|
// the parent class derives.
|
|
//
|
|
inline ClassOrInterface::ClassOrInterface(const Type &metaType,
|
|
TypeKind typeKind,
|
|
const Class *parent, bool final,
|
|
Uint32 nVTableSlots,
|
|
Package &package, const char *name,
|
|
Uint32 nInterfaces,
|
|
Interface **interfaces,
|
|
ClassFileSummary *summary,
|
|
VTableOffset *interfaceVOffsetTable,
|
|
Uint16 *interfaceAssignableTable):
|
|
Type(metaType, &asType(*parent), typeKind, final, nVTableSlots, interfaceVOffsetTable, interfaceAssignableTable),
|
|
package(package),
|
|
name(name),
|
|
fullName(0),
|
|
declName(0),
|
|
nInterfaces(nInterfaces),
|
|
interfaces(interfaces),
|
|
summary(summary),
|
|
initialized(false)
|
|
{ }
|
|
|
|
//
|
|
// Get this class's parent. Return nil if this class is Object.
|
|
//
|
|
inline const Class *Class::getParent() const
|
|
{
|
|
// Make sure that we've set the parent already.
|
|
assert(superType || this == &Standard::get(cObject));
|
|
return static_cast<const Class *>(getSuperClass());
|
|
}
|
|
|
|
|
|
//
|
|
// Get the vtable entry at the given index.
|
|
//
|
|
inline VTableEntry &Type::getVTableEntry(Uint32 vIndex) const
|
|
{
|
|
assert(vIndex < nVTableSlots);
|
|
assert((typeKind == tkObject) || (typeKind == tkArray));
|
|
return *(VTableEntry *)((ptr)this + vTableIndexToOffset(vIndex));
|
|
}
|
|
|
|
//
|
|
// Set the vtable entry at the given index to point either to a Class or to a
|
|
// method's code.
|
|
//
|
|
inline void Type::setVTableEntry(Uint32 vIndex, void *classOrCodePtr)
|
|
{
|
|
assert(vIndex < nVTableSlots);
|
|
assert((typeKind == tkObject) || (typeKind == tkArray));
|
|
VTableEntry *vTableEntry = (VTableEntry *)((ptr)this + vTableIndexToOffset(vIndex));
|
|
vTableEntry->classOrCodePtr = classOrCodePtr;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void printValue(LogModuleObject &f, void *valPtr, const Type &type,
|
|
int maxRecursionLevel = 0,
|
|
Uint32 printFlags = PRINT_DEFAULT_FLAGS,
|
|
const char *newlineString = NULL,
|
|
Vector<JavaObject *> *printedObjects = NULL);
|
|
|
|
void dump(JavaObject *obj, int maxRecursion = 0, Uint32 printFlags = PRINT_DEFAULT_FLAGS,
|
|
const char *newlineString = "\n");
|
|
#endif
|
|
|
|
#endif
|