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437 lines
9.4 KiB
C++
437 lines
9.4 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 _CONSTANT_POOL_H_
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#define _CONSTANT_POOL_H_
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#include "FloatUtils.h"
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#include "prtypes.h"
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#include "utils.h"
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#include "Pool.h"
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#include "ErrorHandling.h"
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#include "Value.h"
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#include "LogModule.h"
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/* Constant pool types */
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#define CR_CONSTANT_CLASS 7
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#define CR_CONSTANT_FIELDREF 9
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#define CR_CONSTANT_METHODREF 10
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#define CR_CONSTANT_INTERFACEMETHODREF 11
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#define CR_CONSTANT_STRING 8
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#define CR_CONSTANT_INTEGER 3
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#define CR_CONSTANT_FLOAT 4
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#define CR_CONSTANT_LONG 5
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#define CR_CONSTANT_DOUBLE 6
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#define CR_CONSTANT_NAMEANDTYPE 12
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#define CR_CONSTANT_UTF8 1
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class ConstantPoolItem;
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/* The Constant Pool */
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class ConstantPool {
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private:
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const ConstantPoolItem **items;
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Uint32 numItems;
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public:
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/* Only ClassFileReader can create the constant pool */
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ConstantPool(Uint32 numItems) : numItems(numItems) {
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items = new const ConstantPoolItem *[numItems];
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}
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/* Set the item at given index in the constant pool. */
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void set(Uint32 index, const ConstantPoolItem *item) {
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assert(index < numItems); items[index] = item;
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}
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/* Get the constant pool item at index "index" in the constant pool. */
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const ConstantPoolItem *get(Uint32 index) const {
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return items[index];
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}
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/* return the number of items in the constant pool */
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Uint32 count() const {
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return numItems;
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}
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#ifdef DEBUG_LOG
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void printItem(LogModuleObject &f, Uint32 index) const;
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#endif
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};
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/* Denizens of the ConstantPool */
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class ConstantPoolItem {
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protected:
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ConstantPoolItem(Pool &pool, Uint8 type) :
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p(pool), type(type) { }
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public:
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Uint8 getType() const {
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return type;
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}
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/* ResolveAndValidate indices into actual pointers; return true if successful */
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virtual bool resolveAndValidate() {
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return true;
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}
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#ifdef DEBUG
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virtual void dump(int indent) const;
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#endif
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#ifdef DEBUG_LOG
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virtual void print(LogModuleObject &f) const;
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#endif
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protected:
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// Pool for allocating dynamic storage for this ConstantPoolItem
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Pool &p;
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private:
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// CR_CONSTANT_ type of this ConstantPoolItem
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Uint8 type;
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};
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class ConstantUtf8 : public ConstantPoolItem {
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public:
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ConstantUtf8(Pool &p, const char *str, Uint32 len);
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const char *getUtfString() const {
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return data;
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}
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const int getUtfLen() const {
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return dataLen;
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}
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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#ifdef DEBUG_LOG
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void print(LogModuleObject &f) const;
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#endif
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private:
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/* Pointer to the interned version of the string */
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const char *data;
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Uint32 dataLen;
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};
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/* A base class for constant-pool items that point to Utf strings */
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class ConstantUtf : public ConstantPoolItem {
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friend class ClassFileReader;
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public:
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ConstantUtf(Pool &p, Uint8 _type, ConstantUtf8 *utf8) :
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ConstantPoolItem(p, _type) {
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utfString = utf8;
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}
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ConstantUtf8 *getUtf() const {
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return utfString;
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}
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protected:
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ConstantUtf(Pool &p, Uint8 _type) :
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ConstantPoolItem(p, _type) {
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utfString = 0;
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}
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ConstantUtf8 *utfString;
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};
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class ConstantClass : public ConstantUtf {
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public:
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static ConstantClass &cast(ConstantPoolItem &item) {
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if (item.getType() != CR_CONSTANT_CLASS)
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verifyError(VerifyError::noClassDefFound);
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return *static_cast<ConstantClass *>(&item);
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}
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virtual bool resolveAndValidate();
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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#ifdef DEBUG_LOG
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void print(LogModuleObject &f) const;
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#endif
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ConstantClass(Pool &p, ConstantPool *array, int _index) :
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ConstantUtf(p, CR_CONSTANT_CLASS), index(_index), pool(array) {}
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private:
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int index;
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// The constant pool of which this ConstantPoolItem is a member
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ConstantPool *pool;
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};
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class ConstantNameAndType : public ConstantPoolItem {
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friend class ClassFileReader;
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public:
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ConstantNameAndType(Pool &p, ConstantUtf8 *name, ConstantUtf8 *desc):
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ConstantPoolItem(p, CR_CONSTANT_NAMEANDTYPE) {
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nameInfo = name;
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descInfo = desc;
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}
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/* Get the name of the constant */
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ConstantUtf8 *getName() const {
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return nameInfo;
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}
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/* returns a class that points to the type string */
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ConstantUtf8 *getDesc() const {
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return descInfo;
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}
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virtual bool resolveAndValidate();
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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#ifdef DEBUG_LOG
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void print(LogModuleObject &f) const;
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#endif
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private:
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ConstantNameAndType(Pool &p,
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ConstantPool *array, Uint16 nindex, Uint16 dIndex);
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// The constant pool of which this ConstantPoolItem is a member
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ConstantPool *pool;
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ConstantUtf8 *nameInfo;
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ConstantUtf8 *descInfo;
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int nameIndex, descIndex;
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};
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/* Base class used by ConstantFieldRef, ConstantMethodRef,
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* ConstantInterfaceMethodRef: members of a class
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*/
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class ConstantRef : public ConstantPoolItem {
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friend class ClassFileReader;
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public:
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ConstantRef(Pool &p, Uint8 _type,
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ConstantClass *cInfo, ConstantNameAndType *_typeInfo) :
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ConstantPoolItem(p, _type) {
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classInfo = cInfo;
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typeInfo = _typeInfo;
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}
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ConstantClass *getClassInfo() const {
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return classInfo;
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}
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ConstantNameAndType *getTypeInfo() const {
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return typeInfo;
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}
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virtual bool resolveAndValidate();
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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#ifdef DEBUG_LOG
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void print(LogModuleObject &f) const;
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#endif
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protected:
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ConstantRef(Pool &p, Uint8 _type, ConstantPool *array, Uint16 cIndex,
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Uint16 tIndex);
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// The constant pool of which this ConstantPoolItem is a member
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ConstantPool *pool;
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ConstantClass *classInfo;
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ConstantNameAndType *typeInfo;
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int classIndex, typeIndex;
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};
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class ConstantFieldRef : public ConstantRef {
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friend class ClassFileReader;
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public:
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ConstantFieldRef(Pool &p, ConstantClass *cInfo,
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ConstantNameAndType *_type):
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ConstantRef(p, CR_CONSTANT_FIELDREF, cInfo, _type) {
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}
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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private:
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ConstantFieldRef(Pool &p, ConstantPool *array, int cIndex,
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int tIndex) :
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ConstantRef(p, CR_CONSTANT_FIELDREF, array, cIndex, tIndex) {
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}
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};
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class ConstantMethodRef : public ConstantRef {
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friend class ClassFileReader;
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public:
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ConstantMethodRef(Pool &p, ConstantClass *cInfo,
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ConstantNameAndType *_type):
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ConstantRef(p, CR_CONSTANT_METHODREF, cInfo, _type) {
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}
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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private:
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ConstantMethodRef(Pool &p, ConstantPool *array, int cIndex,
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int tIndex) :
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ConstantRef(p, CR_CONSTANT_METHODREF, array, cIndex, tIndex) {
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}
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};
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class ConstantInterfaceMethodRef : public ConstantRef {
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friend class ClassFileReader;
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public:
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ConstantInterfaceMethodRef(Pool &p, ConstantClass *cInfo,
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ConstantNameAndType *_type):
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ConstantRef(p, CR_CONSTANT_INTERFACEMETHODREF, cInfo, _type) {
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}
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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private:
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ConstantInterfaceMethodRef(Pool &p, ConstantPool *array, int cIndex,
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int tIndex) :
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ConstantRef(p, CR_CONSTANT_INTERFACEMETHODREF, array, cIndex, tIndex) {
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}
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};
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class ConstantString : public ConstantUtf {
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friend class ClassFileReader;
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public:
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ConstantString(Pool &p, ConstantUtf8 *utf8) :
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ConstantUtf(p, CR_CONSTANT_STRING, utf8) {
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utfString = utf8;
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}
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ConstantUtf8 *getUtf() const {
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return utfString;
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}
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virtual bool resolveAndValidate();
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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#ifdef DEBUG_LOG
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void print(LogModuleObject &f) const;
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#endif
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ConstantString(Pool &p, ConstantPool *array, int _index):
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ConstantUtf(p, CR_CONSTANT_STRING), pool(array), index(_index) { }
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private:
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// The constant pool of which this ConstantPoolItem is a member
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ConstantPool *pool;
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int index;
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};
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/* Base class for all constant types that hold a numberic value */
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class ConstantVal : public ConstantPoolItem {
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public:
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ConstantVal(Pool &p, Uint8 _type, ValueKind kind) :
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ConstantPoolItem(p, _type), vk(kind) {
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}
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Value getValue() const {
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return value;
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}
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ValueKind getValueKind() const {
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return vk;
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}
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#ifdef DEBUG
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virtual void dump(int nIndents) const;
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#endif
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#ifdef DEBUG_LOG
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void print(LogModuleObject &f) const;
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#endif
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protected:
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Value value;
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ValueKind vk;
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};
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class ConstantInt : public ConstantVal {
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public:
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ConstantInt(Pool &p, Int32 val):
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ConstantVal(p, CR_CONSTANT_INTEGER, vkInt) {
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value.setValueContents(val);
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}
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};
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class ConstantFloat : public ConstantVal {
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public:
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ConstantFloat(Pool &p, Uint32 raw);
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};
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class ConstantLong : public ConstantVal {
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public:
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ConstantLong(Pool &p, Uint32 lo, Uint32 hi);
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};
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class ConstantDouble : public ConstantVal {
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public:
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ConstantDouble(Pool &p, char *data);
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};
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#endif /* _CONSTANT_POOL_H_ */
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