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- /*
- * Javassist, a Java-bytecode translator toolkit.
- * Copyright (C) 1999-2006 Shigeru Chiba. All Rights Reserved.
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. Alternatively, the contents of this file may be used under
- * the terms of the GNU Lesser General Public License Version 2.1 or later.
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- */
-
- package javassist.bytecode;
-
- import java.io.DataInputStream;
- import java.io.DataOutputStream;
- import java.io.ByteArrayOutputStream;
- import java.io.PrintWriter;
- import java.io.IOException;
- import java.util.HashMap;
- import java.util.HashSet;
- import java.util.Map;
- import java.util.Set;
-
- import javassist.CtClass;
-
- /**
- * Constant pool table.
- */
- public final class ConstPool {
- LongVector items;
- int numOfItems;
- HashMap classes;
- HashMap strings;
- int thisClassInfo;
-
- /**
- * <code>CONSTANT_Class</code>
- */
- public static final int CONST_Class = ClassInfo.tag;
-
- /**
- * <code>CONSTANT_Fieldref</code>
- */
- public static final int CONST_Fieldref = FieldrefInfo.tag;
-
- /**
- * <code>CONSTANT_Methodref</code>
- */
- public static final int CONST_Methodref = MethodrefInfo.tag;
-
- /**
- * <code>CONSTANT_InterfaceMethodref</code>
- */
- public static final int CONST_InterfaceMethodref
- = InterfaceMethodrefInfo.tag;
-
- /**
- * <code>CONSTANT_String</code>
- */
- public static final int CONST_String = StringInfo.tag;
-
- /**
- * <code>CONSTANT_Integer</code>
- */
- public static final int CONST_Integer = IntegerInfo.tag;
-
- /**
- * <code>CONSTANT_Float</code>
- */
- public static final int CONST_Float = FloatInfo.tag;
-
- /**
- * <code>CONSTANT_Long</code>
- */
- public static final int CONST_Long = LongInfo.tag;
-
- /**
- * <code>CONSTANT_Double</code>
- */
- public static final int CONST_Double = DoubleInfo.tag;
-
- /**
- * <code>CONSTANT_NameAndType</code>
- */
- public static final int CONST_NameAndType = NameAndTypeInfo.tag;
-
- /**
- * <code>CONSTANT_Utf8</code>
- */
- public static final int CONST_Utf8 = Utf8Info.tag;
-
- /**
- * Represents the class using this constant pool table.
- */
- public static final CtClass THIS = null;
-
- /**
- * Constructs a constant pool table.
- *
- * @param thisclass the name of the class using this constant
- * pool table
- */
- public ConstPool(String thisclass) {
- items = new LongVector();
- numOfItems = 0;
- addItem(null); // index 0 is reserved by the JVM.
- classes = new HashMap();
- strings = new HashMap();
- thisClassInfo = addClassInfo(thisclass);
- }
-
- /**
- * Constructs a constant pool table from the given byte stream.
- *
- * @param in byte stream.
- */
- public ConstPool(DataInputStream in) throws IOException {
- classes = new HashMap();
- strings = new HashMap();
- thisClassInfo = 0;
- /* read() initializes items and numOfItems, and do addItem(null).
- */
- read(in);
- }
-
- void prune() {
- classes = new HashMap();
- strings = new HashMap();
- }
-
- /**
- * Returns the number of entries in this table.
- */
- public int getSize() {
- return numOfItems;
- }
-
- /**
- * Returns the name of the class using this constant pool table.
- */
- public String getClassName() {
- return getClassInfo(thisClassInfo);
- }
-
- /**
- * Returns the index of <code>CONSTANT_Class_info</code> structure
- * specifying the class using this constant pool table.
- */
- public int getThisClassInfo() {
- return thisClassInfo;
- }
-
- void setThisClassInfo(int i) {
- thisClassInfo = i;
- }
-
- ConstInfo getItem(int n) {
- return (ConstInfo)items.elementAt(n);
- }
-
- /**
- * Returns the <code>tag</code> field of the constant pool table
- * entry at the given index.
- */
- public int getTag(int index) {
- return getItem(index).getTag();
- }
-
- /**
- * Reads <code>CONSTANT_Class_info</code> structure
- * at the given index.
- *
- * @return a fully-qualified class or interface name specified
- * by <code>name_index</code>.
- */
- public String getClassInfo(int index) {
- ClassInfo c = (ClassInfo)getItem(index);
- if (c == null)
- return null;
- else
- return Descriptor.toJavaName(getUtf8Info(c.name));
- }
-
- /**
- * Reads the <code>name_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * at the given index.
- */
- public int getNameAndTypeName(int index) {
- NameAndTypeInfo ntinfo = (NameAndTypeInfo)getItem(index);
- return ntinfo.memberName;
- }
-
- /**
- * Reads the <code>descriptor_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * at the given index.
- */
- public int getNameAndTypeDescriptor(int index) {
- NameAndTypeInfo ntinfo = (NameAndTypeInfo)getItem(index);
- return ntinfo.typeDescriptor;
- }
-
- /**
- * Reads the <code>class_index</code> field of the
- * <code>CONSTANT_Fieldref_info</code> structure
- * at the given index.
- */
- public int getFieldrefClass(int index) {
- FieldrefInfo finfo = (FieldrefInfo)getItem(index);
- return finfo.classIndex;
- }
-
- /**
- * Reads the <code>class_index</code> field of the
- * <code>CONSTANT_Fieldref_info</code> structure
- * at the given index.
- *
- * @return the name of the class at that <code>class_index</code>.
- */
- public String getFieldrefClassName(int index) {
- FieldrefInfo f = (FieldrefInfo)getItem(index);
- if (f == null)
- return null;
- else
- return getClassInfo(f.classIndex);
- }
-
- /**
- * Reads the <code>name_and_type_index</code> field of the
- * <code>CONSTANT_Fieldref_info</code> structure
- * at the given index.
- */
- public int getFieldrefNameAndType(int index) {
- FieldrefInfo finfo = (FieldrefInfo)getItem(index);
- return finfo.nameAndTypeIndex;
- }
-
- /**
- * Reads the <code>name_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * indirectly specified by the given index.
- *
- * @param index an index to a <code>CONSTANT_Fieldref_info</code>.
- * @return the name of the field.
- */
- public String getFieldrefName(int index) {
- FieldrefInfo f = (FieldrefInfo)getItem(index);
- if (f == null)
- return null;
- else {
- NameAndTypeInfo n = (NameAndTypeInfo)getItem(f.nameAndTypeIndex);
- if(n == null)
- return null;
- else
- return getUtf8Info(n.memberName);
- }
- }
-
- /**
- * Reads the <code>descriptor_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * indirectly specified by the given index.
- *
- * @param index an index to a <code>CONSTANT_Fieldref_info</code>.
- * @return the type descriptor of the field.
- */
- public String getFieldrefType(int index) {
- FieldrefInfo f = (FieldrefInfo)getItem(index);
- if (f == null)
- return null;
- else {
- NameAndTypeInfo n = (NameAndTypeInfo) getItem(f.nameAndTypeIndex);
- if(n == null)
- return null;
- else
- return getUtf8Info(n.typeDescriptor);
- }
- }
-
- /**
- * Reads the <code>class_index</code> field of the
- * <code>CONSTANT_Methodref_info</code> structure
- * at the given index.
- */
- public int getMethodrefClass(int index) {
- MethodrefInfo minfo = (MethodrefInfo)getItem(index);
- return minfo.classIndex;
- }
-
- /**
- * Reads the <code>class_index</code> field of the
- * <code>CONSTANT_Methodref_info</code> structure
- * at the given index.
- *
- * @return the name of the class at that <code>class_index</code>.
- */
- public String getMethodrefClassName(int index) {
- MethodrefInfo minfo = (MethodrefInfo)getItem(index);
- if (minfo == null)
- return null;
- else
- return getClassInfo(minfo.classIndex);
- }
-
- /**
- * Reads the <code>name_and_type_index</code> field of the
- * <code>CONSTANT_Methodref_info</code> structure
- * at the given index.
- */
- public int getMethodrefNameAndType(int index) {
- MethodrefInfo minfo = (MethodrefInfo)getItem(index);
- return minfo.nameAndTypeIndex;
- }
-
- /**
- * Reads the <code>name_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * indirectly specified by the given index.
- *
- * @param index an index to a <code>CONSTANT_Methodref_info</code>.
- * @return the name of the method.
- */
- public String getMethodrefName(int index) {
- MethodrefInfo minfo = (MethodrefInfo)getItem(index);
- if (minfo == null)
- return null;
- else {
- NameAndTypeInfo n
- = (NameAndTypeInfo)getItem(minfo.nameAndTypeIndex);
- if(n == null)
- return null;
- else
- return getUtf8Info(n.memberName);
- }
- }
-
- /**
- * Reads the <code>descriptor_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * indirectly specified by the given index.
- *
- * @param index an index to a <code>CONSTANT_Methodref_info</code>.
- * @return the descriptor of the method.
- */
- public String getMethodrefType(int index) {
- MethodrefInfo minfo = (MethodrefInfo)getItem(index);
- if (minfo == null)
- return null;
- else {
- NameAndTypeInfo n
- = (NameAndTypeInfo)getItem(minfo.nameAndTypeIndex);
- if(n == null)
- return null;
- else
- return getUtf8Info(n.typeDescriptor);
- }
- }
-
- /**
- * Reads the <code>class_index</code> field of the
- * <code>CONSTANT_InterfaceMethodref_info</code> structure
- * at the given index.
- */
- public int getInterfaceMethodrefClass(int index) {
- InterfaceMethodrefInfo minfo
- = (InterfaceMethodrefInfo)getItem(index);
- return minfo.classIndex;
- }
-
- /**
- * Reads the <code>class_index</code> field of the
- * <code>CONSTANT_InterfaceMethodref_info</code> structure
- * at the given index.
- *
- * @return the name of the class at that <code>class_index</code>.
- */
- public String getInterfaceMethodrefClassName(int index) {
- InterfaceMethodrefInfo minfo
- = (InterfaceMethodrefInfo)getItem(index);
- return getClassInfo(minfo.classIndex);
- }
-
- /**
- * Reads the <code>name_and_type_index</code> field of the
- * <code>CONSTANT_InterfaceMethodref_info</code> structure
- * at the given index.
- */
- public int getInterfaceMethodrefNameAndType(int index) {
- InterfaceMethodrefInfo minfo
- = (InterfaceMethodrefInfo)getItem(index);
- return minfo.nameAndTypeIndex;
- }
-
- /**
- * Reads the <code>name_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * indirectly specified by the given index.
- *
- * @param index an index to
- * a <code>CONSTANT_InterfaceMethodref_info</code>.
- * @return the name of the method.
- */
- public String getInterfaceMethodrefName(int index) {
- InterfaceMethodrefInfo minfo
- = (InterfaceMethodrefInfo)getItem(index);
- if (minfo == null)
- return null;
- else {
- NameAndTypeInfo n
- = (NameAndTypeInfo)getItem(minfo.nameAndTypeIndex);
- if(n == null)
- return null;
- else
- return getUtf8Info(n.memberName);
- }
- }
-
- /**
- * Reads the <code>descriptor_index</code> field of the
- * <code>CONSTANT_NameAndType_info</code> structure
- * indirectly specified by the given index.
- *
- * @param index an index to
- * a <code>CONSTANT_InterfaceMethodref_info</code>.
- * @return the descriptor of the method.
- */
- public String getInterfaceMethodrefType(int index) {
- InterfaceMethodrefInfo minfo
- = (InterfaceMethodrefInfo)getItem(index);
- if (minfo == null)
- return null;
- else {
- NameAndTypeInfo n
- = (NameAndTypeInfo)getItem(minfo.nameAndTypeIndex);
- if(n == null)
- return null;
- else
- return getUtf8Info(n.typeDescriptor);
- }
- }
- /**
- * Reads <code>CONSTANT_Integer_info</code>, <code>_Float_info</code>,
- * <code>_Long_info</code>, <code>_Double_info</code>, or
- * <code>_String_info</code> structure.
- * These are used with the LDC instruction.
- *
- * @return a <code>String</code> value or a wrapped primitive-type
- * value.
- */
- public Object getLdcValue(int index) {
- ConstInfo constInfo = this.getItem(index);
- Object value = null;
- if (constInfo instanceof StringInfo)
- value = this.getStringInfo(index);
- else if (constInfo instanceof FloatInfo)
- value = new Float(getFloatInfo(index));
- else if (constInfo instanceof IntegerInfo)
- value = new Integer(getIntegerInfo(index));
- else if (constInfo instanceof LongInfo)
- value = new Long(getLongInfo(index));
- else if (constInfo instanceof DoubleInfo)
- value = new Double(getDoubleInfo(index));
- else
- value = null;
-
- return value;
- }
-
- /**
- * Reads <code>CONSTANT_Integer_info</code> structure
- * at the given index.
- *
- * @return the value specified by this entry.
- */
- public int getIntegerInfo(int index) {
- IntegerInfo i = (IntegerInfo)getItem(index);
- return i.value;
- }
-
- /**
- * Reads <code>CONSTANT_Float_info</code> structure
- * at the given index.
- *
- * @return the value specified by this entry.
- */
- public float getFloatInfo(int index) {
- FloatInfo i = (FloatInfo)getItem(index);
- return i.value;
- }
-
- /**
- * Reads <code>CONSTANT_Long_info</code> structure
- * at the given index.
- *
- * @return the value specified by this entry.
- */
- public long getLongInfo(int index) {
- LongInfo i = (LongInfo)getItem(index);
- return i.value;
- }
-
- /**
- * Reads <code>CONSTANT_Double_info</code> structure
- * at the given index.
- *
- * @return the value specified by this entry.
- */
- public double getDoubleInfo(int index) {
- DoubleInfo i = (DoubleInfo)getItem(index);
- return i.value;
- }
-
- /**
- * Reads <code>CONSTANT_String_info</code> structure
- * at the given index.
- *
- * @return the string specified by <code>string_index</code>.
- */
- public String getStringInfo(int index) {
- StringInfo si = (StringInfo)getItem(index);
- return getUtf8Info(si.string);
- }
-
- /**
- * Reads <code>CONSTANT_utf8_info</code> structure
- * at the given index.
- *
- * @return the string specified by this entry.
- */
- public String getUtf8Info(int index) {
- Utf8Info utf = (Utf8Info)getItem(index);
- return utf.string;
- }
-
- /**
- * Determines whether <code>CONSTANT_Methodref_info</code>
- * structure at the given index represents the constructor
- * of the given class.
- *
- * @return the <code>descriptor_index</code> specifying
- * the type descriptor of the that constructor.
- * If it is not that constructor,
- * <code>isConstructor()</code> returns 0.
- */
- public int isConstructor(String classname, int index) {
- return isMember(classname, MethodInfo.nameInit, index);
- }
-
- /**
- * Determines whether <code>CONSTANT_Methodref_info</code>,
- * <code>CONSTANT_Fieldref_info</code>, or
- * <code>CONSTANT_InterfaceMethodref_info</code> structure
- * at the given index represents the member with the specified
- * name and declaring class.
- *
- * @param classname the class declaring the member
- * @param membername the member name
- * @param index the index into the constant pool table
- *
- * @return the <code>descriptor_index</code> specifying
- * the type descriptor of that member.
- * If it is not that member,
- * <code>isMember()</code> returns 0.
- */
- public int isMember(String classname, String membername, int index) {
- MemberrefInfo minfo = (MemberrefInfo)getItem(index);
- if (getClassInfo(minfo.classIndex).equals(classname)) {
- NameAndTypeInfo ntinfo
- = (NameAndTypeInfo)getItem(minfo.nameAndTypeIndex);
- if (getUtf8Info(ntinfo.memberName).equals(membername))
- return ntinfo.typeDescriptor;
- }
-
- return 0; // false
- }
-
- private int addItem(ConstInfo info) {
- items.addElement(info);
- return numOfItems++;
- }
-
- /**
- * Copies the n-th item in this ConstPool object into the destination
- * ConstPool object.
- * The class names that the item refers to are renamed according
- * to the given map.
- *
- * @param n the <i>n</i>-th item
- * @param dest destination constant pool table
- * @param classnames the map or null.
- * @return the index of the copied item into the destination ClassPool.
- */
- public int copy(int n, ConstPool dest, Map classnames) {
- if (n == 0)
- return 0;
-
- ConstInfo info = getItem(n);
- return info.copy(this, dest, classnames);
- }
-
- int addConstInfoPadding() {
- return addItem(new ConstInfoPadding());
- }
-
- /**
- * Adds a new <code>CONSTANT_Class_info</code> structure.
- *
- * <p>This also adds a <code>CONSTANT_Utf8_info</code> structure
- * for storing the class name.
- *
- * @return the index of the added entry.
- */
- public int addClassInfo(CtClass c) {
- if (c == THIS)
- return thisClassInfo;
- else if (!c.isArray())
- return addClassInfo(c.getName());
- else {
- // an array type is recorded in the hashtable with
- // the key "[L<classname>;" instead of "<classname>".
- //
- // note: toJvmName(toJvmName(c)) is equal to toJvmName(c).
-
- return addClassInfo(Descriptor.toJvmName(c));
- }
- }
-
- /**
- * Adds a new <code>CONSTANT_Class_info</code> structure.
- *
- * <p>This also adds a <code>CONSTANT_Utf8_info</code> structure
- * for storing the class name.
- *
- * @param qname a fully-qualified class name
- * (or the JVM-internal representation of that name).
- * @return the index of the added entry.
- */
- public int addClassInfo(String qname) {
- ClassInfo info = (ClassInfo)classes.get(qname);
- if (info != null)
- return info.index;
- else {
- int utf8 = addUtf8Info(Descriptor.toJvmName(qname));
- info = new ClassInfo(utf8, numOfItems);
- classes.put(qname, info);
- return addItem(info);
- }
- }
-
- /**
- * Adds a new <code>CONSTANT_NameAndType_info</code> structure.
- *
- * <p>This also adds <code>CONSTANT_Utf8_info</code> structures.
- *
- * @param name <code>name_index</code>
- * @param type <code>descriptor_index</code>
- * @return the index of the added entry.
- */
- public int addNameAndTypeInfo(String name, String type) {
- return addNameAndTypeInfo(addUtf8Info(name), addUtf8Info(type));
- }
-
- /**
- * Adds a new <code>CONSTANT_NameAndType_info</code> structure.
- *
- * @param name <code>name_index</code>
- * @param type <code>descriptor_index</code>
- * @return the index of the added entry.
- */
- public int addNameAndTypeInfo(int name, int type) {
- return addItem(new NameAndTypeInfo(name, type));
- }
-
- /**
- * Adds a new <code>CONSTANT_Fieldref_info</code> structure.
- *
- * <p>This also adds a new <code>CONSTANT_NameAndType_info</code>
- * structure.
- *
- * @param classInfo <code>class_index</code>
- * @param name <code>name_index</code>
- * of <code>CONSTANT_NameAndType_info</code>.
- * @param type <code>descriptor_index</code>
- * of <code>CONSTANT_NameAndType_info</code>.
- * @return the index of the added entry.
- */
- public int addFieldrefInfo(int classInfo, String name, String type) {
- int nt = addNameAndTypeInfo(name, type);
- return addFieldrefInfo(classInfo, nt);
- }
-
- /**
- * Adds a new <code>CONSTANT_Fieldref_info</code> structure.
- *
- * @param classInfo <code>class_index</code>
- * @param nameAndTypeInfo <code>name_and_type_index</code>.
- * @return the index of the added entry.
- */
- public int addFieldrefInfo(int classInfo, int nameAndTypeInfo) {
- return addItem(new FieldrefInfo(classInfo, nameAndTypeInfo));
- }
-
- /**
- * Adds a new <code>CONSTANT_Methodref_info</code> structure.
- *
- * <p>This also adds a new <code>CONSTANT_NameAndType_info</code>
- * structure.
- *
- * @param classInfo <code>class_index</code>
- * @param name <code>name_index</code>
- * of <code>CONSTANT_NameAndType_info</code>.
- * @param type <code>descriptor_index</code>
- * of <code>CONSTANT_NameAndType_info</code>.
- * @return the index of the added entry.
- */
- public int addMethodrefInfo(int classInfo, String name, String type) {
- int nt = addNameAndTypeInfo(name, type);
- return addMethodrefInfo(classInfo, nt);
- }
-
- /**
- * Adds a new <code>CONSTANT_Methodref_info</code> structure.
- *
- * @param classInfo <code>class_index</code>
- * @param nameAndTypeInfo <code>name_and_type_index</code>.
- * @return the index of the added entry.
- */
- public int addMethodrefInfo(int classInfo, int nameAndTypeInfo) {
- return addItem(new MethodrefInfo(classInfo, nameAndTypeInfo));
- }
-
- /**
- * Adds a new <code>CONSTANT_InterfaceMethodref_info</code>
- * structure.
- *
- * <p>This also adds a new <code>CONSTANT_NameAndType_info</code>
- * structure.
- *
- * @param classInfo <code>class_index</code>
- * @param name <code>name_index</code>
- * of <code>CONSTANT_NameAndType_info</code>.
- * @param type <code>descriptor_index</code>
- * of <code>CONSTANT_NameAndType_info</code>.
- * @return the index of the added entry.
- */
- public int addInterfaceMethodrefInfo(int classInfo, String name,
- String type) {
- int nt = addNameAndTypeInfo(name, type);
- return addInterfaceMethodrefInfo(classInfo, nt);
- }
-
- /**
- * Adds a new <code>CONSTANT_InterfaceMethodref_info</code>
- * structure.
- *
- * @param classInfo <code>class_index</code>
- * @param nameAndTypeInfo <code>name_and_type_index</code>.
- * @return the index of the added entry.
- */
- public int addInterfaceMethodrefInfo(int classInfo,
- int nameAndTypeInfo) {
- return addItem(new InterfaceMethodrefInfo(classInfo,
- nameAndTypeInfo));
- }
-
- /**
- * Adds a new <code>CONSTANT_String_info</code>
- * structure.
- *
- * <p>This also adds a new <code>CONSTANT_Utf8_info</code>
- * structure.
- *
- * @return the index of the added entry.
- */
- public int addStringInfo(String str) {
- return addItem(new StringInfo(addUtf8Info(str)));
- }
-
- /**
- * Adds a new <code>CONSTANT_Integer_info</code>
- * structure.
- *
- * @return the index of the added entry.
- */
- public int addIntegerInfo(int i) {
- return addItem(new IntegerInfo(i));
- }
-
- /**
- * Adds a new <code>CONSTANT_Float_info</code>
- * structure.
- *
- * @return the index of the added entry.
- */
- public int addFloatInfo(float f) {
- return addItem(new FloatInfo(f));
- }
-
- /**
- * Adds a new <code>CONSTANT_Long_info</code>
- * structure.
- *
- * @return the index of the added entry.
- */
- public int addLongInfo(long l) {
- int i = addItem(new LongInfo(l));
- addItem(new ConstInfoPadding());
- return i;
- }
-
- /**
- * Adds a new <code>CONSTANT_Double_info</code>
- * structure.
- *
- * @return the index of the added entry.
- */
- public int addDoubleInfo(double d) {
- int i = addItem(new DoubleInfo(d));
- addItem(new ConstInfoPadding());
- return i;
- }
-
- /**
- * Adds a new <code>CONSTANT_Utf8_info</code>
- * structure.
- *
- * <p>If the given utf8 string has been already recorded in the
- * table, then this method does not add a new entry to avoid adding
- * a duplicated entry.
- * Instead, it returns the index of the entry already recorded.
- *
- * @return the index of the added entry.
- */
- public int addUtf8Info(String utf8) {
- Utf8Info info = (Utf8Info)strings.get(utf8);
- if (info != null)
- return info.index;
- else {
- info = new Utf8Info(utf8, numOfItems);
- strings.put(utf8, info);
- return addItem(info);
- }
- }
-
- /**
- * Get all the class names.
- *
- * @return a set of class names
- */
- public Set getClassNames()
- {
- HashSet result = new HashSet();
- LongVector v = items;
- int size = numOfItems;
- for (int i = 1; i < size; ++i) {
- String className = ((ConstInfo) v.elementAt(i)).getClassName(this);
- if (className != null)
- result.add(className);
- }
- return result;
- }
-
- /**
- * Replaces all occurrences of a class name.
- *
- * @param oldName the replaced name (JVM-internal representation).
- * @param newName the substituted name (JVM-internal representation).
- */
- public void renameClass(String oldName, String newName) {
- LongVector v = items;
- int size = numOfItems;
- classes = new HashMap(classes.size() * 2);
- for (int i = 1; i < size; ++i) {
- ConstInfo ci = (ConstInfo)v.elementAt(i);
- ci.renameClass(this, oldName, newName);
- ci.makeHashtable(this);
- }
- }
-
- /**
- * Replaces all occurrences of class names.
- *
- * @param classnames specifies pairs of replaced and substituted
- * name.
- */
- public void renameClass(Map classnames) {
- LongVector v = items;
- int size = numOfItems;
- classes = new HashMap(classes.size() * 2);
- for (int i = 1; i < size; ++i) {
- ConstInfo ci = (ConstInfo)v.elementAt(i);
- ci.renameClass(this, classnames);
- ci.makeHashtable(this);
- }
- }
-
- private void read(DataInputStream in) throws IOException {
- int n = in.readUnsignedShort();
-
- items = new LongVector(n);
- numOfItems = 0;
- addItem(null); // index 0 is reserved by the JVM.
-
- while (--n > 0) { // index 0 is reserved by JVM
- int tag = readOne(in);
- if ((tag == LongInfo.tag) || (tag == DoubleInfo.tag)) {
- addItem(new ConstInfoPadding());
- --n;
- }
- }
-
- int i = 1;
- while (true) {
- ConstInfo info = (ConstInfo)items.elementAt(i++);
- if (info == null)
- break;
- else
- info.makeHashtable(this);
- }
- }
-
- private int readOne(DataInputStream in) throws IOException {
- ConstInfo info;
- int tag = in.readUnsignedByte();
- switch (tag) {
- case Utf8Info.tag : // 1
- info = new Utf8Info(in, numOfItems);
- strings.put(((Utf8Info)info).string, info);
- break;
- case IntegerInfo.tag : // 3
- info = new IntegerInfo(in);
- break;
- case FloatInfo.tag : // 4
- info = new FloatInfo(in);
- break;
- case LongInfo.tag : // 5
- info = new LongInfo(in);
- break;
- case DoubleInfo.tag : // 6
- info = new DoubleInfo(in);
- break;
- case ClassInfo.tag : // 7
- info = new ClassInfo(in, numOfItems);
- // classes.put(<classname>, info);
- break;
- case StringInfo.tag : // 8
- info = new StringInfo(in);
- break;
- case FieldrefInfo.tag : // 9
- info = new FieldrefInfo(in);
- break;
- case MethodrefInfo.tag : // 10
- info = new MethodrefInfo(in);
- break;
- case InterfaceMethodrefInfo.tag : // 11
- info = new InterfaceMethodrefInfo(in);
- break;
- case NameAndTypeInfo.tag : // 12
- info = new NameAndTypeInfo(in);
- break;
- default :
- throw new IOException("invalid constant type: " + tag);
- }
-
- addItem(info);
- return tag;
- }
-
- /**
- * Writes the contents of the constant pool table.
- */
- public void write(DataOutputStream out) throws IOException {
- out.writeShort(numOfItems);
- LongVector v = items;
- int size = numOfItems;
- for (int i = 1; i < size; ++i)
- ((ConstInfo)v.elementAt(i)).write(out);
- }
-
- /**
- * Prints the contents of the constant pool table.
- */
- public void print() {
- print(new PrintWriter(System.out, true));
- }
-
- /**
- * Prints the contents of the constant pool table.
- */
- public void print(PrintWriter out) {
- int size = numOfItems;
- for (int i = 1; i < size; ++i) {
- out.print(i);
- out.print(" ");
- ((ConstInfo)items.elementAt(i)).print(out);
- }
- }
- }
-
- abstract class ConstInfo {
- public abstract int getTag();
-
- public String getClassName(ConstPool cp) { return null; }
- public void renameClass(ConstPool cp, String oldName, String newName) {}
- public void renameClass(ConstPool cp, Map classnames) {}
- public abstract int copy(ConstPool src, ConstPool dest, Map classnames);
- // ** classnames is a mapping between JVM names.
-
- public abstract void write(DataOutputStream out) throws IOException;
- public abstract void print(PrintWriter out);
-
- void makeHashtable(ConstPool cp) {} // called after read() finishes in ConstPool.
-
- public String toString() {
- ByteArrayOutputStream bout = new ByteArrayOutputStream();
- PrintWriter out = new PrintWriter(bout);
- print(out);
- return bout.toString();
- }
- }
-
- /* padding following DoubleInfo or LongInfo.
- */
- class ConstInfoPadding extends ConstInfo {
- public int getTag() { return 0; }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- return dest.addConstInfoPadding();
- }
-
- public void write(DataOutputStream out) throws IOException {}
-
- public void print(PrintWriter out) {
- out.println("padding");
- }
- }
-
- class ClassInfo extends ConstInfo {
- static final int tag = 7;
- int name;
- int index;
-
- public ClassInfo(int className, int i) {
- name = className;
- index = i;
- }
-
- public ClassInfo(DataInputStream in, int i) throws IOException {
- name = in.readUnsignedShort();
- index = i;
- }
-
- public int getTag() { return tag; }
-
- public String getClassName(ConstPool cp) {
- return cp.getUtf8Info(name);
- };
-
- public void renameClass(ConstPool cp, String oldName, String newName) {
- String nameStr = cp.getUtf8Info(name);
- if (nameStr.equals(oldName))
- name = cp.addUtf8Info(newName);
- else if (nameStr.charAt(0) == '[') {
- String nameStr2 = Descriptor.rename(nameStr, oldName, newName);
- if (nameStr != nameStr2)
- name = cp.addUtf8Info(nameStr2);
- }
- }
-
- public void renameClass(ConstPool cp, Map map) {
- String oldName = cp.getUtf8Info(name);
- if (oldName.charAt(0) == '[') {
- String newName = Descriptor.rename(oldName, map);
- if (oldName != newName)
- name = cp.addUtf8Info(newName);
- }
- else {
- String newName = (String)map.get(oldName);
- if (newName != null && !newName.equals(oldName))
- name = cp.addUtf8Info(newName);
- }
- }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- String classname = src.getUtf8Info(name);
- if (map != null) {
- String newname = (String)map.get(classname);
- if (newname != null)
- classname = newname;
- }
-
- return dest.addClassInfo(classname);
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeShort(name);
- }
-
- public void print(PrintWriter out) {
- out.print("Class #");
- out.println(name);
- }
-
- void makeHashtable(ConstPool cp) {
- String name = Descriptor.toJavaName(getClassName(cp));
- cp.classes.put(name, this);
- }
- }
-
- class NameAndTypeInfo extends ConstInfo {
- static final int tag = 12;
- int memberName;
- int typeDescriptor;
-
- public NameAndTypeInfo(int name, int type) {
- memberName = name;
- typeDescriptor = type;
- }
-
- public NameAndTypeInfo(DataInputStream in) throws IOException {
- memberName = in.readUnsignedShort();
- typeDescriptor = in.readUnsignedShort();
- }
-
- public int getTag() { return tag; }
-
- public void renameClass(ConstPool cp, String oldName, String newName) {
- String type = cp.getUtf8Info(typeDescriptor);
- String type2 = Descriptor.rename(type, oldName, newName);
- if (type != type2)
- typeDescriptor = cp.addUtf8Info(type2);
- }
-
- public void renameClass(ConstPool cp, Map map) {
- String type = cp.getUtf8Info(typeDescriptor);
- String type2 = Descriptor.rename(type, map);
- if (type != type2)
- typeDescriptor = cp.addUtf8Info(type2);
- }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- String mname = src.getUtf8Info(memberName);
- String tdesc = src.getUtf8Info(typeDescriptor);
- tdesc = Descriptor.rename(tdesc, map);
- return dest.addNameAndTypeInfo(dest.addUtf8Info(mname),
- dest.addUtf8Info(tdesc));
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeShort(memberName);
- out.writeShort(typeDescriptor);
- }
-
- public void print(PrintWriter out) {
- out.print("NameAndType #");
- out.print(memberName);
- out.print(", type #");
- out.println(typeDescriptor);
- }
- }
-
- abstract class MemberrefInfo extends ConstInfo {
- int classIndex;
- int nameAndTypeIndex;
-
- public MemberrefInfo(int cindex, int ntindex) {
- classIndex = cindex;
- nameAndTypeIndex = ntindex;
- }
-
- public MemberrefInfo(DataInputStream in) throws IOException {
- classIndex = in.readUnsignedShort();
- nameAndTypeIndex = in.readUnsignedShort();
- }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- int classIndex2 = src.getItem(classIndex).copy(src, dest, map);
- int ntIndex2 = src.getItem(nameAndTypeIndex).copy(src, dest, map);
- return copy2(dest, classIndex2, ntIndex2);
- }
-
- abstract protected int copy2(ConstPool dest, int cindex, int ntindex);
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(getTag());
- out.writeShort(classIndex);
- out.writeShort(nameAndTypeIndex);
- }
-
- public void print(PrintWriter out) {
- out.print(getTagName() + " #");
- out.print(classIndex);
- out.print(", name&type #");
- out.println(nameAndTypeIndex);
- }
-
- public abstract String getTagName();
- }
-
- class FieldrefInfo extends MemberrefInfo {
- static final int tag = 9;
-
- public FieldrefInfo(int cindex, int ntindex) {
- super(cindex, ntindex);
- }
-
- public FieldrefInfo(DataInputStream in) throws IOException {
- super(in);
- }
-
- public int getTag() { return tag; }
-
- public String getTagName() { return "Field"; }
-
- protected int copy2(ConstPool dest, int cindex, int ntindex) {
- return dest.addFieldrefInfo(cindex, ntindex);
- }
- }
-
- class MethodrefInfo extends MemberrefInfo {
- static final int tag = 10;
-
- public MethodrefInfo(int cindex, int ntindex) {
- super(cindex, ntindex);
- }
-
- public MethodrefInfo(DataInputStream in) throws IOException {
- super(in);
- }
-
- public int getTag() { return tag; }
-
- public String getTagName() { return "Method"; }
-
- protected int copy2(ConstPool dest, int cindex, int ntindex) {
- return dest.addMethodrefInfo(cindex, ntindex);
- }
- }
-
- class InterfaceMethodrefInfo extends MemberrefInfo {
- static final int tag = 11;
-
- public InterfaceMethodrefInfo(int cindex, int ntindex) {
- super(cindex, ntindex);
- }
-
- public InterfaceMethodrefInfo(DataInputStream in) throws IOException {
- super(in);
- }
-
- public int getTag() { return tag; }
-
- public String getTagName() { return "Interface"; }
-
- protected int copy2(ConstPool dest, int cindex, int ntindex) {
- return dest.addInterfaceMethodrefInfo(cindex, ntindex);
- }
- }
-
- class StringInfo extends ConstInfo {
- static final int tag = 8;
- int string;
-
- public StringInfo(int str) {
- string = str;
- }
-
- public StringInfo(DataInputStream in) throws IOException {
- string = in.readUnsignedShort();
- }
-
- public int getTag() { return tag; }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- return dest.addStringInfo(src.getUtf8Info(string));
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeShort(string);
- }
-
- public void print(PrintWriter out) {
- out.print("String #");
- out.println(string);
- }
- }
-
- class IntegerInfo extends ConstInfo {
- static final int tag = 3;
- int value;
-
- public IntegerInfo(int i) {
- value = i;
- }
-
- public IntegerInfo(DataInputStream in) throws IOException {
- value = in.readInt();
- }
-
- public int getTag() { return tag; }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- return dest.addIntegerInfo(value);
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeInt(value);
- }
-
- public void print(PrintWriter out) {
- out.print("Integer ");
- out.println(value);
- }
- }
-
- class FloatInfo extends ConstInfo {
- static final int tag = 4;
- float value;
-
- public FloatInfo(float f) {
- value = f;
- }
-
- public FloatInfo(DataInputStream in) throws IOException {
- value = in.readFloat();
- }
-
- public int getTag() { return tag; }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- return dest.addFloatInfo(value);
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeFloat(value);
- }
-
- public void print(PrintWriter out) {
- out.print("Float ");
- out.println(value);
- }
- }
-
- class LongInfo extends ConstInfo {
- static final int tag = 5;
- long value;
-
- public LongInfo(long l) {
- value = l;
- }
-
- public LongInfo(DataInputStream in) throws IOException {
- value = in.readLong();
- }
-
- public int getTag() { return tag; }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- return dest.addLongInfo(value);
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeLong(value);
- }
-
- public void print(PrintWriter out) {
- out.print("Long ");
- out.println(value);
- }
- }
-
- class DoubleInfo extends ConstInfo {
- static final int tag = 6;
- double value;
-
- public DoubleInfo(double d) {
- value = d;
- }
-
- public DoubleInfo(DataInputStream in) throws IOException {
- value = in.readDouble();
- }
-
- public int getTag() { return tag; }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- return dest.addDoubleInfo(value);
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeDouble(value);
- }
-
- public void print(PrintWriter out) {
- out.print("Double ");
- out.println(value);
- }
- }
-
- class Utf8Info extends ConstInfo {
- static final int tag = 1;
- String string;
- int index;
-
- public Utf8Info(String utf8, int i) {
- string = utf8;
- index = i;
- }
-
- public Utf8Info(DataInputStream in, int i) throws IOException {
- string = in.readUTF();
- index = i;
- }
-
- public int getTag() { return tag; }
-
- public int copy(ConstPool src, ConstPool dest, Map map) {
- return dest.addUtf8Info(string);
- }
-
- public void write(DataOutputStream out) throws IOException {
- out.writeByte(tag);
- out.writeUTF(string);
- }
-
- public void print(PrintWriter out) {
- out.print("UTF8 \"");
- out.print(string);
- out.println("\"");
- }
- }
|