| /* |
| * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package com.sun.classanalyzer; |
| |
| import com.sun.tools.classfile.*; |
| import com.sun.tools.classfile.ConstantPool.*; |
| import static com.sun.tools.classfile.ConstantPool.*; |
| |
| /** |
| * |
| * @author Mandy Chung |
| */ |
| public class ConstantPoolParser { |
| |
| private final ClassFileParser cfparser; |
| private final StringValueVisitor visitor; |
| private final ConstantPool cpool; |
| |
| ConstantPoolParser(ClassFileParser parser) { |
| this.cfparser = parser; |
| this.cpool = cfparser.classfile.constant_pool; |
| this.visitor = new StringValueVisitor(); |
| } |
| |
| public String stringValue(CPInfo cpInfo) { |
| return visitor.visit(cpInfo); |
| } |
| |
| public String stringValue(int constant_pool_index) { |
| try { |
| return stringValue(cpool.get(constant_pool_index)); |
| } catch (ConstantPool.InvalidIndex e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public void parseDependency() { |
| ConstantPool.Visitor<Integer, Void> v = new ConstantPool.Visitor<Integer, Void>() { |
| |
| public Integer visitClass(CONSTANT_Class_info info, Void p) { |
| try { |
| String classname = cfparser.checkClassName(info.getName()); |
| if (classname.isEmpty()) { |
| return 1; |
| } |
| |
| Klass from = cfparser.this_klass; |
| Klass to = Klass.getKlass(classname); |
| ResolutionInfo resInfo = ResolutionInfo.resolvedConstantPool(from, to, info.name_index); |
| |
| from.addDep(to, resInfo); |
| to.addReferrer(from, resInfo); |
| } catch (ConstantPoolException ex) { |
| throw new RuntimeException(ex); |
| } |
| return 1; |
| } |
| |
| public Integer visitDouble(CONSTANT_Double_info info, Void p) { |
| // skip |
| return 2; |
| } |
| |
| public Integer visitFieldref(CONSTANT_Fieldref_info info, Void p) { |
| // skip |
| return 1; |
| } |
| |
| public Integer visitFloat(CONSTANT_Float_info info, Void p) { |
| // skip |
| return 1; |
| } |
| |
| public Integer visitInteger(CONSTANT_Integer_info info, Void p) { |
| // skip |
| return 1; |
| } |
| |
| public Integer visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, Void p) { |
| // skip |
| return 1; |
| } |
| |
| public Integer visitLong(CONSTANT_Long_info info, Void p) { |
| // skip |
| return 2; |
| } |
| |
| public Integer visitNameAndType(CONSTANT_NameAndType_info info, Void p) { |
| // skip |
| return 1; |
| } |
| |
| public Integer visitMethodref(CONSTANT_Methodref_info info, Void p) { |
| // skip |
| return 1; |
| } |
| |
| public Integer visitString(CONSTANT_String_info info, Void p) { |
| // skip |
| return 1; |
| } |
| |
| public Integer visitUtf8(CONSTANT_Utf8_info info, Void p) { |
| // skip |
| return 1; |
| } |
| }; |
| int cpx = 1; |
| while (cpx < cpool.size()) { |
| try { |
| CPInfo cpInfo = cpool.get(cpx); |
| cpx += cpInfo.accept(v, null); |
| } catch (ConstantPool.InvalidIndex ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| } |
| |
| int getTag(int index) { |
| try { |
| return cpool.get(index).getTag(); |
| } catch (ConstantPoolException ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| String getDescriptor(int index) { |
| CPInfo cpInfo; |
| try { |
| cpInfo = cpool.get(index); |
| } catch (ConstantPoolException ex) { |
| throw new RuntimeException(ex); |
| } |
| |
| int tag = cpInfo.getTag(); |
| switch (tag) { |
| case CONSTANT_Methodref: |
| case CONSTANT_InterfaceMethodref: |
| case CONSTANT_Fieldref: |
| // simplify references within this class |
| CPRefInfo ref = (CPRefInfo) cpInfo; |
| try { |
| return ref.getNameAndTypeInfo().getType(); |
| } catch (ConstantPoolException ex) { |
| } |
| } |
| return stringValue(cpInfo); |
| } |
| |
| String getMethodName(int index) { |
| try { |
| CPInfo cpInfo = cpool.get(index); |
| if (cpInfo.getTag() == CONSTANT_Methodref || |
| cpInfo.getTag() == CONSTANT_InterfaceMethodref) { |
| |
| // simplify references within this class |
| CPRefInfo ref = (CPRefInfo) cpInfo; |
| String classname; |
| if (ref.class_index == cfparser.classfile.this_class) { |
| classname = cfparser.this_klass.getClassName(); |
| } else { |
| classname = cfparser.checkClassName(ref.getClassName()).replace('/', '.'); |
| } |
| String methodname = ref.getNameAndTypeInfo().getName(); |
| return classname + "." + methodname; |
| } else { |
| return null; |
| } |
| } catch (InvalidIndex ex) { |
| throw new RuntimeException(ex); |
| } catch (ConstantPoolException ex) { |
| throw new RuntimeException(ex); |
| } |
| |
| } |
| |
| class StringValueVisitor implements ConstantPool.Visitor<String, Void> { |
| |
| public StringValueVisitor() { |
| } |
| |
| public String visit(CPInfo info) { |
| return info.accept(this, null); |
| } |
| |
| public String visitClass(CONSTANT_Class_info info, Void p) { |
| return getCheckedName(info); |
| } |
| |
| String getCheckedName(CONSTANT_Class_info info) { |
| try { |
| return checkName(info.getName()); |
| } catch (ConstantPoolException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public String visitDouble(CONSTANT_Double_info info, Void p) { |
| return info.value + "d"; |
| } |
| |
| public String visitFieldref(CONSTANT_Fieldref_info info, Void p) { |
| return visitRef(info, p); |
| } |
| |
| public String visitFloat(CONSTANT_Float_info info, Void p) { |
| return info.value + "f"; |
| } |
| |
| public String visitInteger(CONSTANT_Integer_info info, Void p) { |
| return String.valueOf(info.value); |
| } |
| |
| public String visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, Void p) { |
| return visitRef(info, p); |
| } |
| |
| public String visitLong(CONSTANT_Long_info info, Void p) { |
| return info.value + "l"; |
| } |
| |
| public String visitNameAndType(CONSTANT_NameAndType_info info, Void p) { |
| return getCheckedName(info) + ":" + getType(info); |
| } |
| |
| String getCheckedName(CONSTANT_NameAndType_info info) { |
| try { |
| return checkName(info.getName()); |
| } catch (ConstantPoolException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| String getType(CONSTANT_NameAndType_info info) { |
| try { |
| return info.getType(); |
| } catch (ConstantPoolException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public String visitMethodref(CONSTANT_Methodref_info info, Void p) { |
| return visitRef(info, p); |
| } |
| |
| public String visitString(CONSTANT_String_info info, Void p) { |
| try { |
| int string_index = info.string_index; |
| return cpool.getUTF8Info(string_index).accept(this, p); |
| } catch (ConstantPoolException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public String visitUtf8(CONSTANT_Utf8_info info, Void p) { |
| String s = info.value; |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < s.length(); i++) { |
| char c = s.charAt(i); |
| switch (c) { |
| case '\t': |
| sb.append('\\').append('t'); |
| break; |
| case '\n': |
| sb.append('\\').append('n'); |
| break; |
| case '\r': |
| sb.append('\\').append('r'); |
| break; |
| case '\"': |
| sb.append('\\').append('\"'); |
| break; |
| default: |
| sb.append(c); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| String visitRef(CPRefInfo info, Void p) { |
| String cn = getCheckedClassName(info); |
| String nat; |
| try { |
| nat = info.getNameAndTypeInfo().accept(this, p); |
| } catch (ConstantPoolException e) { |
| nat = e.getMessage(); |
| } |
| return cn + "." + nat; |
| } |
| |
| String getCheckedClassName(CPRefInfo info) { |
| try { |
| return checkName(info.getClassName()); |
| } catch (ConstantPoolException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| /* If name is a valid binary name, return it; otherwise quote it. */ |
| |
| private static String checkName(String name) { |
| if (name == null) { |
| return "null"; |
| } |
| |
| int len = name.length(); |
| if (len == 0) { |
| return "\"\""; |
| } |
| |
| int cc = '/'; |
| int cp; |
| for (int k = 0; k < len; k += Character.charCount(cp)) { |
| cp = name.codePointAt(k); |
| if ((cc == '/' && !Character.isJavaIdentifierStart(cp)) || (cp != '/' && !Character.isJavaIdentifierPart(cp))) { |
| return "\"" + name + "\""; |
| } |
| cc = cp; |
| } |
| return name; |
| } |
| |
| String tagName(int index) { |
| try { |
| int tag = cpool.get(index).getTag(); |
| switch (tag) { |
| case CONSTANT_Utf8: |
| return "Utf8"; |
| case CONSTANT_Integer: |
| return "int"; |
| case CONSTANT_Float: |
| return "float"; |
| case CONSTANT_Long: |
| return "long"; |
| case CONSTANT_Double: |
| return "double"; |
| case CONSTANT_Class: |
| return "class"; |
| case CONSTANT_String: |
| return "String"; |
| case CONSTANT_Fieldref: |
| return "Field"; |
| case CONSTANT_Methodref: |
| return "Method"; |
| case CONSTANT_InterfaceMethodref: |
| return "InterfaceMethod"; |
| case CONSTANT_NameAndType: |
| return "NameAndType"; |
| default: |
| return "(unknown tag)"; |
| } |
| } catch (InvalidIndex e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |