|
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816 |
- /* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" and
- * "Apache BCEL" must not be used to endorse or promote products
- * derived from this software without prior written permission. For
- * written permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * "Apache BCEL", nor may "Apache" appear in their name, without
- * prior written permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.aspectj.apache.bcel.classfile;
-
- import java.io.DataInputStream;
- import java.io.DataOutputStream;
- import java.io.IOException;
- import java.util.HashMap;
- import java.util.Map;
-
- import org.aspectj.apache.bcel.Constants;
- import org.aspectj.apache.bcel.generic.ArrayType;
- import org.aspectj.apache.bcel.generic.ObjectType;
-
- /**
- * This class represents the constant pool, i.e., a table of constants, of a parsed classfile. It may contain null references, due
- * to the JVM specification that skips an entry after an 8-byte constant (double, long) entry.
- */
- public class ConstantPool implements Node {
- private Constant[] pool;
- private int poolSize; // number of entries in the pool (could be < pool.length as the array is resized in 'chunks')
-
- private Map<String, Integer> utf8Cache = new HashMap<>();
- private Map<String, Integer> methodCache = new HashMap<>();
- private Map<String, Integer> fieldCache = new HashMap<>();
-
- public int getSize() {
- return poolSize;
- }
-
- public ConstantPool() {
- pool = new Constant[10];
- poolSize = 0;
- }
-
- public ConstantPool(Constant[] constants) {
- pool = constants;
- poolSize = (constants == null ? 0 : constants.length);
- }
-
- ConstantPool(DataInputStream file) throws IOException {
- byte tag;
- poolSize = file.readUnsignedShort();
- pool = new Constant[poolSize];
- // pool[0] is unused by the compiler and may be used freely by the implementation
- for (int i = 1; i < poolSize; i++) {
- pool[i] = Constant.readConstant(file);
- tag = pool[i].getTag();
- if ((tag == Constants.CONSTANT_Double) || (tag == Constants.CONSTANT_Long)) {
- i++;
- }
- }
- }
-
- public Constant getConstant(int index, byte tag) {
- Constant c = getConstant(index);
- // if (c == null) throw new ClassFormatException("Constant pool at index " + index + " is null.");
- if (c.tag == tag)
- return c;
- throw new ClassFormatException("Expected class '" + Constants.CONSTANT_NAMES[tag] + "' at index " + index + " and found "
- + c);
- }
-
- public Constant getConstant(int index) {
- try {
- return pool[index];
- } catch (ArrayIndexOutOfBoundsException aioobe) {
- throw new ClassFormatException("Index " + index + " into constant pool (size:" + poolSize + ") is invalid");
- }
- }
-
- /**
- * @return deep copy of this constant pool
- */
- public ConstantPool copy() {
- Constant[] newConstants = new Constant[poolSize]; // use the correct size
- for (int i = 1; i < poolSize; i++) {
- if (pool[i] != null) {
- newConstants[i] = pool[i].copy();
- }
- }
- return new ConstantPool(newConstants);
- }
-
- /**
- * Get string from constant pool and bypass the indirection of `ConstantClass' and `ConstantString' objects. I.e. these classes
- * have an index field that points to another entry of the constant pool of type `ConstantUtf8' which contains the real data.
- *
- * @param index Index in constant pool
- * @param tag Tag of expected constant, either ConstantClass or ConstantString
- * @return Contents of string reference
- * @see ConstantClass
- * @see ConstantString
- * @throws ClassFormatException
- */
- public String getConstantString(int index, byte tag) throws ClassFormatException {
- Constant c = getConstant(index, tag);
- int i;
- /*
- * This switch() is not that elegant, since the two classes have the same contents, they just differ in the name of the
- * index field variable. But we want to stick to the JVM naming conventions closely though we could have solved these more
- * elegantly by using the same variable name or by subclassing.
- */
- // OPTIMIZE remove the difference - use the an interface and same index methods for string ref id
- switch (tag) {
- case Constants.CONSTANT_Class:
- i = ((ConstantClass) c).getNameIndex();
- break;
- case Constants.CONSTANT_String:
- i = ((ConstantString) c).getStringIndex();
- break;
- default:
- throw new RuntimeException("getConstantString called with illegal tag " + tag);
- }
- // Finally get the string from the constant pool
- c = getConstant(i, Constants.CONSTANT_Utf8);
- return ((ConstantUtf8) c).getValue();
- }
-
- /**
- * Resolve constant to a string representation.
- */
- public String constantToString(Constant c) {
- String str;
- int i;
-
- switch (c.tag) {
- case Constants.CONSTANT_Class:
- i = ((ConstantClass) c).getNameIndex();
- c = getConstant(i, Constants.CONSTANT_Utf8);
- str = Utility.compactClassName(((ConstantUtf8) c).getValue(), false);
- break;
-
- case Constants.CONSTANT_String:
- i = ((ConstantString) c).getStringIndex();
- c = getConstant(i, Constants.CONSTANT_Utf8);
- str = "\"" + escape(((ConstantUtf8) c).getValue()) + "\"";
- break;
-
- case Constants.CONSTANT_Utf8:
- case Constants.CONSTANT_Double:
- case Constants.CONSTANT_Float:
- case Constants.CONSTANT_Long:
- case Constants.CONSTANT_Integer:
- str = ((SimpleConstant) c).getStringValue();
- break;
-
- case Constants.CONSTANT_NameAndType:
- str = (constantToString(((ConstantNameAndType) c).getNameIndex(), Constants.CONSTANT_Utf8) + " " + constantToString(
- ((ConstantNameAndType) c).getSignatureIndex(), Constants.CONSTANT_Utf8));
- break;
-
- case Constants.CONSTANT_InterfaceMethodref:
- case Constants.CONSTANT_Methodref:
- case Constants.CONSTANT_Fieldref:
- str = (constantToString(((ConstantCP) c).getClassIndex(), Constants.CONSTANT_Class) + "." + constantToString(
- ((ConstantCP) c).getNameAndTypeIndex(), Constants.CONSTANT_NameAndType));
- break;
-
- case Constants.CONSTANT_InvokeDynamic:
- ConstantInvokeDynamic cID = ((ConstantInvokeDynamic)c);
- return "#"+cID.getBootstrapMethodAttrIndex()+"."+constantToString(cID.getNameAndTypeIndex(), Constants.CONSTANT_NameAndType);
-
- case Constants.CONSTANT_MethodHandle:
- ConstantMethodHandle cMH = ((ConstantMethodHandle)c);
- return cMH.getReferenceKind()+":"+constantToString(cMH.getReferenceIndex(),Constants.CONSTANT_Methodref);
-
- case Constants.CONSTANT_MethodType:
- ConstantMethodType cMT = (ConstantMethodType)c;
- return constantToString(cMT.getDescriptorIndex(),Constants.CONSTANT_Utf8);
-
- case Constants.CONSTANT_Module:
- ConstantModule cM = (ConstantModule)c;
- return "Module:"+constantToString(cM.getNameIndex(),Constants.CONSTANT_Utf8);
-
- case Constants.CONSTANT_Package:
- ConstantPackage cP = (ConstantPackage)c;
- return "Package:"+constantToString(cP.getNameIndex(),Constants.CONSTANT_Utf8);
-
- default: // Never reached
- throw new RuntimeException("Unknown constant type " + c.tag);
- }
-
- return str;
- }
-
- private static final String escape(String str) {
- int len = str.length();
- StringBuilder buf = new StringBuilder(len + 5);
- char[] ch = str.toCharArray();
-
- for (int i = 0; i < len; i++) {
- switch (ch[i]) {
- case '\n':
- buf.append("\\n");
- break;
- case '\r':
- buf.append("\\r");
- break;
- case '\t':
- buf.append("\\t");
- break;
- case '\b':
- buf.append("\\b");
- break;
- case '"':
- buf.append("\\\"");
- break;
- default:
- buf.append(ch[i]);
- }
- }
-
- return buf.toString();
- }
-
- public String constantToString(int index, byte tag) {
- Constant c = getConstant(index, tag);
- return constantToString(c);
- }
-
- public String constantToString(int index) {
- return constantToString(getConstant(index));
- }
-
- @Override
- public void accept(ClassVisitor v) {
- v.visitConstantPool(this);
- }
-
- public Constant[] getConstantPool() {
- return pool;
- } // TEMPORARY, DONT LIKE PASSING THIS DATA OUT!
-
- public void dump(DataOutputStream file) throws IOException {
- file.writeShort(poolSize);
- for (int i = 1; i < poolSize; i++)
- if (pool[i] != null)
- pool[i].dump(file);
- }
-
- public ConstantUtf8 getConstantUtf8(int index) {
- Constant c = getConstant(index);
- assert c != null;
- assert c.tag == Constants.CONSTANT_Utf8;
- return (ConstantUtf8) c;
- }
-
- public ConstantModule getConstantModule(int index) {
- Constant c = getConstant(index);
- assert c != null;
- assert c.tag == Constants.CONSTANT_Module;
- return (ConstantModule)c;
- }
-
- public ConstantPackage getConstantPackage(int index) {
- Constant c = getConstant(index);
- assert c != null;
- assert c.tag == Constants.CONSTANT_Package;
- return (ConstantPackage)c;
- }
-
- public String getConstantString_CONSTANTClass(int index) {
- ConstantClass c = (ConstantClass) getConstant(index, Constants.CONSTANT_Class);
- index = c.getNameIndex();
- return ((ConstantUtf8) getConstant(index, Constants.CONSTANT_Utf8)).getValue();
- }
-
- public int getLength() {
- return poolSize;
- }
-
- @Override
- public String toString() {
- StringBuilder buf = new StringBuilder();
-
- for (int i = 1; i < poolSize; i++)
- buf.append(i + ")" + pool[i] + "\n");
-
- return buf.toString();
- }
-
- public int lookupInteger(int n) {
- for (int i = 1; i < poolSize; i++) {
- if (pool[i] instanceof ConstantInteger) {
- ConstantInteger c = (ConstantInteger) pool[i];
- if (c.getValue() == n)
- return i;
- }
- }
- return -1;
- }
-
- public int lookupUtf8(String string) {
- Integer pos = utf8Cache.get(string);
- if (pos != null) {
- return pos;
- }
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_Utf8) {
- if (((ConstantUtf8) c).getValue().equals(string)) {
- utf8Cache.put(string, i);
- return i;
- }
- }
- }
- return -1;
- }
-
- public int lookupClass(String classname) {
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_Class) {
- int cIndex = ((ConstantClass) c).getNameIndex();
- String cName = ((ConstantUtf8) pool[cIndex]).getValue();
- if (cName.equals(classname))
- return i;
- }
- }
- return -1;
- }
-
- public int addUtf8(String n) {
- int ret = lookupUtf8(n);
- if (ret != -1)
- return ret;
- adjustSize();
- ret = poolSize;
- pool[poolSize++] = new ConstantUtf8(n);
- return ret;
- }
-
- public int addInteger(int n) {
- int ret = lookupInteger(n);
- if (ret != -1)
- return ret;
- adjustSize();
- ret = poolSize;
- pool[poolSize++] = new ConstantInteger(n);
- return ret;
- }
-
- public int addArrayClass(ArrayType type) {
- return addClass(type.getSignature());
- }
-
- public int addClass(ObjectType type) {
- return addClass(type.getClassName());
- }
-
- public int addClass(String classname) {
- String toAdd = classname.replace('.', '/');
- int ret = lookupClass(toAdd);
- if (ret != -1)
- return ret;
- adjustSize();
- ConstantClass c = new ConstantClass(addUtf8(toAdd));
- ret = poolSize;
- pool[poolSize++] = c;
- return ret;
- }
-
- private void adjustSize() {
- if (poolSize + 3 >= pool.length) {
- Constant[] cs = pool;
- pool = new Constant[cs.length + 8];
- System.arraycopy(cs, 0, pool, 0, cs.length);
- }
- if (poolSize == 0)
- poolSize = 1; // someone about to do something in here!
- }
-
- public int addFieldref(String class_name, String field_name, String signature) {
- int ret = lookupFieldref(class_name, field_name, signature);
- int class_index, name_and_type_index;
-
- if (ret != -1)
- return ret;
-
- adjustSize();
-
- class_index = addClass(class_name);
- name_and_type_index = addNameAndType(field_name, signature);
- ret = poolSize;
- pool[poolSize++] = new ConstantFieldref(class_index, name_and_type_index);
-
- return ret;
- }
-
- public int lookupFieldref(String searchClassname, String searchFieldname, String searchSignature) {
- searchClassname = searchClassname.replace('.', '/');
- String k = new StringBuilder().append(searchClassname).append(searchFieldname).append(searchSignature).toString();
- Integer pos = fieldCache.get(k);
- if (pos != null)
- return pos;
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_Fieldref) {
- ConstantFieldref cfr = (ConstantFieldref) c;
- ConstantNameAndType cnat = (ConstantNameAndType) pool[cfr.getNameAndTypeIndex()];
-
- // check the class
- int cIndex = cfr.getClassIndex();
- ConstantClass cc = (ConstantClass) pool[cIndex];
- String cName = ((ConstantUtf8) pool[cc.getNameIndex()]).getValue();
- if (!cName.equals(searchClassname))
- continue;
-
- // check the name and type
- String name = ((ConstantUtf8) pool[cnat.getNameIndex()]).getValue();
- if (!name.equals(searchFieldname))
- continue; // not this one
- String typeSignature = ((ConstantUtf8) pool[cnat.getSignatureIndex()]).getValue();
- if (!typeSignature.equals(searchSignature))
- continue;
- fieldCache.put(k, i);
- return i;
- }
- }
- return -1;
- }
-
- public int addNameAndType(String name, String signature) {
- int ret = lookupNameAndType(name, signature);
- if (ret != -1)
- return ret;
- adjustSize();
- int name_index = addUtf8(name);
- int signature_index = addUtf8(signature);
- ret = poolSize;
- pool[poolSize++] = new ConstantNameAndType(name_index, signature_index);
- return ret;
- }
-
- public int lookupNameAndType(String searchName, String searchTypeSignature) {
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_NameAndType) {
- ConstantNameAndType cnat = (ConstantNameAndType) c;
- String name = ((ConstantUtf8) pool[cnat.getNameIndex()]).getValue();
- if (!name.equals(searchName))
- continue; // not this one
- String typeSignature = ((ConstantUtf8) pool[cnat.getSignatureIndex()]).getValue();
- if (!typeSignature.equals(searchTypeSignature))
- continue;
- return i;
- }
- }
- return -1;
- }
-
- public int addFloat(float f) {
- int ret = lookupFloat(f);
- if (ret != -1)
- return ret;
- adjustSize();
- ret = poolSize;
- pool[poolSize++] = new ConstantFloat(f);
- return ret;
- }
-
- public int lookupFloat(float f) {
- int bits = Float.floatToIntBits(f);
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_Float) {
- ConstantFloat cf = (ConstantFloat) c;
- if (Float.floatToIntBits(cf.getValue()) == bits)
- return i;
- }
- }
- return -1;
- }
-
- public int addDouble(double d) {
- int ret = lookupDouble(d);
- if (ret != -1)
- return ret;
- adjustSize();
- ret = poolSize;
- pool[poolSize] = new ConstantDouble(d);
- poolSize += 2;
- return ret;
- }
-
- public int lookupDouble(double d) {
- long bits = Double.doubleToLongBits(d);
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_Double) {
- ConstantDouble cf = (ConstantDouble) c;
- if (Double.doubleToLongBits(cf.getValue()) == bits)
- return i;
- }
- }
- return -1;
- }
-
- public int addLong(long l) {
- int ret = lookupLong(l);
- if (ret != -1)
- return ret;
- adjustSize();
- ret = poolSize;
- pool[poolSize] = new ConstantLong(l);
- poolSize += 2;
- return ret;
- }
-
- public int lookupString(String s) {
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_String) {
- ConstantString cs = (ConstantString) c;
- ConstantUtf8 cu8 = (ConstantUtf8) pool[cs.getStringIndex()];
- if (cu8.getValue().equals(s))
- return i;
- }
- }
- return -1;
- }
-
- public int addString(String str) {
- int ret = lookupString(str);
- if (ret != -1)
- return ret;
- int utf8 = addUtf8(str);
- adjustSize();
- ConstantString s = new ConstantString(utf8);
- ret = poolSize;
- pool[poolSize++] = s;
- return ret;
- }
-
- public int lookupLong(long l) {
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_Long) {
- ConstantLong cf = (ConstantLong) c;
- if (cf.getValue() == l)
- return i;
- }
- }
- return -1;
- }
-
- public int addConstant(Constant c, ConstantPool cp) {
- Constant[] constants = cp.getConstantPool();
- switch (c.getTag()) {
-
- case Constants.CONSTANT_String: {
- ConstantString s = (ConstantString) c;
- ConstantUtf8 u8 = (ConstantUtf8) constants[s.getStringIndex()];
-
- return addString(u8.getValue());
- }
-
- case Constants.CONSTANT_Class: {
- ConstantClass s = (ConstantClass) c;
- ConstantUtf8 u8 = (ConstantUtf8) constants[s.getNameIndex()];
-
- return addClass(u8.getValue());
- }
-
- case Constants.CONSTANT_NameAndType: {
- ConstantNameAndType n = (ConstantNameAndType) c;
- ConstantUtf8 u8 = (ConstantUtf8) constants[n.getNameIndex()];
- ConstantUtf8 u8_2 = (ConstantUtf8) constants[n.getSignatureIndex()];
-
- return addNameAndType(u8.getValue(), u8_2.getValue());
- }
-
- case Constants.CONSTANT_InvokeDynamic: {
- ConstantInvokeDynamic cid = (ConstantInvokeDynamic)c;
- int index1 = cid.getBootstrapMethodAttrIndex();
- ConstantNameAndType cnat = (ConstantNameAndType)constants[cid.getNameAndTypeIndex()];
- ConstantUtf8 name = (ConstantUtf8) constants[cnat.getNameIndex()];
- ConstantUtf8 signature = (ConstantUtf8) constants[cnat.getSignatureIndex()];
- int index2 = addNameAndType(name.getValue(), signature.getValue());
- return addInvokeDynamic(index1,index2);
- }
-
- case Constants.CONSTANT_MethodHandle:
- ConstantMethodHandle cmh = (ConstantMethodHandle)c;
- return addMethodHandle(cmh.getReferenceKind(),addConstant(constants[cmh.getReferenceIndex()],cp));
-
- case Constants.CONSTANT_Utf8:
- return addUtf8(((ConstantUtf8) c).getValue());
-
- case Constants.CONSTANT_Double:
- return addDouble(((ConstantDouble) c).getValue());
-
- case Constants.CONSTANT_Float:
- return addFloat(((ConstantFloat) c).getValue());
-
- case Constants.CONSTANT_Long:
- return addLong(((ConstantLong) c).getValue());
-
- case Constants.CONSTANT_Integer:
- return addInteger(((ConstantInteger) c).getValue());
-
- case Constants.CONSTANT_MethodType:
- ConstantMethodType cmt = (ConstantMethodType)c;
- return addMethodType(addConstant(constants[cmt.getDescriptorIndex()],cp));
-
- case Constants.CONSTANT_InterfaceMethodref:
- case Constants.CONSTANT_Methodref:
- case Constants.CONSTANT_Fieldref: {
- ConstantCP m = (ConstantCP) c;
- ConstantClass clazz = (ConstantClass) constants[m.getClassIndex()];
- ConstantNameAndType n = (ConstantNameAndType) constants[m.getNameAndTypeIndex()];
- ConstantUtf8 u8 = (ConstantUtf8) constants[clazz.getNameIndex()];
- String class_name = u8.getValue().replace('/', '.');
-
- u8 = (ConstantUtf8) constants[n.getNameIndex()];
- String name = u8.getValue();
-
- u8 = (ConstantUtf8) constants[n.getSignatureIndex()];
- String signature = u8.getValue();
-
- switch (c.getTag()) {
- case Constants.CONSTANT_InterfaceMethodref:
- return addInterfaceMethodref(class_name, name, signature);
-
- case Constants.CONSTANT_Methodref:
- return addMethodref(class_name, name, signature); // OPTIMIZE indicate it should be cached!
-
- case Constants.CONSTANT_Fieldref:
- return addFieldref(class_name, name, signature);
-
- default: // Never reached
- throw new RuntimeException("Unknown constant type " + c);
- }
- }
-
- default: // Never reached
- throw new RuntimeException("Unknown constant type " + c);
- }
- }
-
- public int addMethodHandle(byte referenceKind, int referenceIndex) {
- adjustSize();
- int ret = poolSize;
- pool[poolSize++] = new ConstantMethodHandle(referenceKind, referenceIndex);
- return ret;
- }
-
- public int addMethodType(int descriptorIndex) {
- adjustSize();
- int ret = poolSize;
- pool[poolSize++] = new ConstantMethodType(descriptorIndex);
- return ret;
- }
-
- // OPTIMIZE should put it in the cache now
- public int addMethodref(String class_name, String method_name, String signature) {
- int ret, class_index, name_and_type_index;
- if ((ret = lookupMethodref(class_name, method_name, signature)) != -1)
- return ret; // Already in CP
-
- adjustSize();
-
- name_and_type_index = addNameAndType(method_name, signature);
- class_index = addClass(class_name);
- ret = poolSize;
- pool[poolSize++] = new ConstantMethodref(class_index, name_and_type_index);
- return ret;
- }
-
- public int addInvokeDynamic(int bootstrapMethodIndex, int constantNameAndTypeIndex) {
- adjustSize();
- int ret = poolSize;
- pool[poolSize++] = new ConstantInvokeDynamic(bootstrapMethodIndex, constantNameAndTypeIndex);
- return ret;
- }
-
- public int addInterfaceMethodref(String class_name, String method_name, String signature) {
- int ret = lookupInterfaceMethodref(class_name, method_name, signature);
- int class_index, name_and_type_index;
-
- if (ret != -1)
- return ret;
- adjustSize();
-
- class_index = addClass(class_name);
- name_and_type_index = addNameAndType(method_name, signature);
- ret = poolSize;
- pool[poolSize++] = new ConstantInterfaceMethodref(class_index, name_and_type_index);
- return ret;
- }
-
- public int lookupInterfaceMethodref(String searchClassname, String searchMethodName, String searchSignature) {
- searchClassname = searchClassname.replace('.', '/');
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_InterfaceMethodref) {
- ConstantInterfaceMethodref cfr = (ConstantInterfaceMethodref) c;
-
- ConstantClass cc = (ConstantClass) pool[cfr.getClassIndex()];
- String cName = ((ConstantUtf8) pool[cc.getNameIndex()]).getValue();
- if (!cName.equals(searchClassname))
- continue;
-
- // check the name and type
- ConstantNameAndType cnat = (ConstantNameAndType) pool[cfr.getNameAndTypeIndex()];
- String name = ((ConstantUtf8) pool[cnat.getNameIndex()]).getValue();
- if (!name.equals(searchMethodName))
- continue; // not this one
- String typeSignature = ((ConstantUtf8) pool[cnat.getSignatureIndex()]).getValue();
- if (!typeSignature.equals(searchSignature))
- continue;
- return i;
- }
- }
- return -1;
- }
-
- public int lookupMethodref(String searchClassname, String searchMethodName, String searchSignature) {
- String key = new StringBuilder().append(searchClassname).append(searchMethodName).append(searchSignature).toString();
- Integer cached = methodCache.get(key);
- if (cached != null)
- return cached;
- searchClassname = searchClassname.replace('.', '/');
- for (int i = 1; i < poolSize; i++) {
- Constant c = pool[i];
- if (c != null && c.tag == Constants.CONSTANT_Methodref) {
- ConstantMethodref cfr = (ConstantMethodref) c;
- ConstantNameAndType cnat = (ConstantNameAndType) pool[cfr.getNameAndTypeIndex()];
-
- // check the class
- int cIndex = cfr.getClassIndex();
- ConstantClass cc = (ConstantClass) pool[cIndex];
- String cName = ((ConstantUtf8) pool[cc.getNameIndex()]).getValue();
- if (!cName.equals(searchClassname))
- continue;
-
- // check the name and type
- String name = ((ConstantUtf8) pool[cnat.getNameIndex()]).getValue();
- if (!name.equals(searchMethodName))
- continue; // not this one
- String typeSignature = ((ConstantUtf8) pool[cnat.getSignatureIndex()]).getValue();
- if (!typeSignature.equals(searchSignature))
- continue;
- methodCache.put(key, i);
- return i;
- }
- }
- return -1;
- }
-
- public ConstantPool getFinalConstantPool() {
- Constant[] cs = new Constant[poolSize]; // create it the exact size we need
- System.arraycopy(pool, 0, cs, 0, poolSize);
- return new ConstantPool(cs);
- }
-
- public String getModuleName(int moduleIndex) {
- return getConstantModule(moduleIndex).getModuleName(this);
- }
-
- public String getPackageName(int packageIndex) {
- return getConstantPackage(packageIndex).getPackageName(this);
- }
- }
|