jjg@46: /*
xdono@54:  * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
jjg@46:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@46:  *
jjg@46:  * This code is free software; you can redistribute it and/or modify it
jjg@46:  * under the terms of the GNU General Public License version 2 only, as
jjg@46:  * published by the Free Software Foundation.  Sun designates this
jjg@46:  * particular file as subject to the "Classpath" exception as provided
jjg@46:  * by Sun in the LICENSE file that accompanied this code.
jjg@46:  *
jjg@46:  * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@46:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@46:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jjg@46:  * version 2 for more details (a copy is included in the LICENSE file that
jjg@46:  * accompanied this code).
jjg@46:  *
jjg@46:  * You should have received a copy of the GNU General Public License version
jjg@46:  * 2 along with this work; if not, write to the Free Software Foundation,
jjg@46:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@46:  *
jjg@46:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
jjg@46:  * CA 95054 USA or visit www.sun.com if you need additional information or
jjg@46:  * have any questions.
jjg@46:  */
jjg@46: 
jjg@46: package com.sun.tools.javap;
jjg@46: 
jjg@88: import java.net.URI;
jjg@46: import java.util.Collection;
jjg@46: import java.util.List;
jjg@46: 
jjg@46: import com.sun.tools.classfile.AccessFlags;
jjg@46: import com.sun.tools.classfile.Attribute;
jjg@46: import com.sun.tools.classfile.Attributes;
jjg@46: import com.sun.tools.classfile.ClassFile;
jjg@46: import com.sun.tools.classfile.Code_attribute;
jjg@46: import com.sun.tools.classfile.ConstantPool;
jjg@46: import com.sun.tools.classfile.ConstantPoolException;
jjg@87: import com.sun.tools.classfile.ConstantValue_attribute;
jjg@46: import com.sun.tools.classfile.Descriptor;
jjg@46: import com.sun.tools.classfile.DescriptorException;
jjg@46: import com.sun.tools.classfile.Exceptions_attribute;
jjg@46: import com.sun.tools.classfile.Field;
jjg@46: import com.sun.tools.classfile.Method;
jjg@46: import com.sun.tools.classfile.Signature;
jjg@46: import com.sun.tools.classfile.Signature_attribute;
jjg@46: import com.sun.tools.classfile.SourceFile_attribute;
jjg@46: import com.sun.tools.classfile.Type;
jjg@46: 
jjg@88: import java.text.DateFormat;
jjg@88: import java.util.Date;
jjg@46: import static com.sun.tools.classfile.AccessFlags.*;
jjg@46: 
jjg@46: /*
jjg@46:  *  The main javap class to write the contents of a class file as text.
jjg@46:  *
jjg@46:  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
jjg@46:  *  you write code that depends on this, you do so at your own risk.
jjg@46:  *  This code and its internal interfaces are subject to change or
jjg@46:  *  deletion without notice.</b>
jjg@46:  */
jjg@46: public class ClassWriter extends BasicWriter {
jjg@46:     static ClassWriter instance(Context context) {
jjg@46:         ClassWriter instance = context.get(ClassWriter.class);
jjg@46:         if (instance == null)
jjg@46:             instance = new ClassWriter(context);
jjg@46:         return instance;
jjg@46:     }
jjg@46: 
jjg@46:     protected ClassWriter(Context context) {
jjg@46:         super(context);
jjg@46:         context.put(ClassWriter.class, this);
jjg@46:         options = Options.instance(context);
jjg@46:         attrWriter = AttributeWriter.instance(context);
jjg@46:         codeWriter = CodeWriter.instance(context);
jjg@46:         constantWriter = ConstantWriter.instance(context);
jjg@46:     }
jjg@46: 
jjg@88:     void setDigest(String name, byte[] digest) {
jjg@88:         this.digestName = name;
jjg@88:         this.digest = digest;
jjg@88:     }
jjg@88: 
jjg@88:     void setFile(URI uri) {
jjg@88:         this.uri = uri;
jjg@88:     }
jjg@88: 
jjg@88:     void setFileSize(int size) {
jjg@88:         this.size = size;
jjg@88:     }
jjg@88: 
jjg@88:     void setLastModified(long lastModified) {
jjg@88:         this.lastModified = lastModified;
jjg@88:     }
jjg@88: 
jjg@46:     ClassFile getClassFile() {
jjg@46:         return classFile;
jjg@46:     }
jjg@46: 
jjg@46:     Method getMethod() {
jjg@46:         return method;
jjg@46:     }
jjg@46: 
jjg@46:     public void write(ClassFile cf) {
jjg@46:         classFile = cf;
jjg@46:         constant_pool = classFile.constant_pool;
jjg@46: 
jjg@88:         if ((options.sysInfo || options.verbose) && !options.compat) {
jjg@88:             if (uri != null) {
jjg@88:                 if (uri.getScheme().equals("file"))
jjg@88:                     println("Classfile " + uri.getPath());
jjg@88:                 else
jjg@88:                     println("Classfile " + uri);
jjg@88:             }
jjg@88:             if (lastModified != -1) {
jjg@88:                 Date lm = new Date(lastModified);
jjg@88:                 DateFormat df = DateFormat.getDateInstance();
jjg@88:                 if (size > 0) {
jjg@88:                     println("Last modified " + df.format(lm) + "; size " + size + " bytes");
jjg@88:                 } else {
jjg@88:                     println("Last modified " + df.format(lm));
jjg@88:                 }
jjg@88:             } else if (size > 0) {
jjg@88:                 println("Size " + size + " bytes");
jjg@88:             }
jjg@88:             if (digestName != null && digest != null) {
jjg@88:                 StringBuilder sb = new StringBuilder();
jjg@88:                 for (byte b: digest)
jjg@88:                     sb.append(String.format("%02x", b));
jjg@88:                 println(digestName + " checksum " + sb);
jjg@88:             }
jjg@88:         }
jjg@88: 
jjg@46:         Attribute sfa = cf.getAttribute(Attribute.SourceFile);
jjg@46:         if (sfa instanceof SourceFile_attribute) {
jjg@46:             println("Compiled from \"" + getSourceFile((SourceFile_attribute) sfa) + "\"");
jjg@46:         }
jjg@46: 
jjg@46:         String name = getJavaName(classFile);
jjg@46:         AccessFlags flags = cf.access_flags;
jjg@46: 
jjg@46:         writeModifiers(flags.getClassModifiers());
jjg@46: 
jjg@46:         if (classFile.isClass())
jjg@46:             print("class ");
jjg@46:         else if (classFile.isInterface())
jjg@46:             print("interface ");
jjg@46: 
jjg@46:         print(name);
jjg@46: 
jjg@46:         Signature_attribute sigAttr = getSignature(cf.attributes);
jjg@46:         if (sigAttr == null) {
jjg@46:             // use info from class file header
jjg@65:             if (classFile.isClass() && classFile.super_class != 0 ) {
jjg@65:                 String sn = getJavaSuperclassName(cf);
jjg@65:                 print(" extends ");
jjg@65:                 print(sn);
jjg@46:             }
jjg@46:             for (int i = 0; i < classFile.interfaces.length; i++) {
jjg@46:                 print(i == 0 ? (classFile.isClass() ? " implements " : " extends ") : ",");
jjg@46:                 print(getJavaInterfaceName(classFile, i));
jjg@46:             }
jjg@46:         } else {
jjg@46:             try {
jjg@46:                 Type t = sigAttr.getParsedSignature().getType(constant_pool);
jjg@46:                 // The signature parser cannot disambiguate between a
jjg@46:                 // FieldType and a ClassSignatureType that only contains a superclass type.
jjg@46:                 if (t instanceof Type.ClassSigType)
jjg@46:                     print(t);
jjg@65:                 else {
jjg@46:                     print(" extends ");
jjg@46:                     print(t);
jjg@46:                 }
jjg@46:             } catch (ConstantPoolException e) {
jjg@46:                 print(report(e));
jjg@46:             }
jjg@46:         }
jjg@46: 
jjg@46:         if (options.verbose) {
jjg@46:             println();
jjg@46:             attrWriter.write(cf, cf.attributes, constant_pool);
jjg@46:             println("  minor version: " + cf.minor_version);
jjg@46:             println("  major version: " + cf.major_version);
jjg@46:             if (!options.compat)
jjg@46:               writeList("  flags: ", flags.getClassFlags(), NEWLINE);
jjg@46:             constantWriter.writeConstantPool();
jjg@46:             println();
jjg@46:         } else {
jjg@46:             if (!options.compat)
jjg@46:                 print(" ");
jjg@46:         }
jjg@46: 
jjg@46:         println("{");
jjg@46:         writeFields();
jjg@46:         writeMethods();
jjg@46:         println("}");
jjg@46:         println();
jjg@46:     }
jjg@46: 
jjg@46:     void writeFields() {
jjg@46:         for (Field f: classFile.fields) {
jjg@46:             writeField(f);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     void writeField(Field f) {
jjg@46:         if (!options.checkAccess(f.access_flags))
jjg@46:             return;
jjg@46: 
jjg@46:         if (!(options.showLineAndLocalVariableTables
jjg@46:                 || options.showDisassembled
jjg@46:                 || options.verbose
jjg@46:                 || options.showInternalSignatures
jjg@46:                 || options.showAllAttrs)) {
jjg@46:             print("    ");
jjg@46:         }
jjg@46: 
jjg@46:         AccessFlags flags = f.access_flags;
jjg@46:         writeModifiers(flags.getFieldModifiers());
jjg@46:         Signature_attribute sigAttr = getSignature(f.attributes);
jjg@46:         if (sigAttr == null)
jjg@46:             print(getFieldType(f.descriptor));
jjg@46:         else {
jjg@46:             try {
jjg@46:                 Type t = sigAttr.getParsedSignature().getType(constant_pool);
jjg@46:                 print(t);
jjg@46:             } catch (ConstantPoolException e) {
jjg@46:                 // report error?
jjg@46:                 // fall back on non-generic descriptor
jjg@46:                 print(getFieldType(f.descriptor));
jjg@46:             }
jjg@46:         }
jjg@46:         print(" ");
jjg@46:         print(getFieldName(f));
jjg@87:         if (options.showConstants && !options.compat) { // BUG 4111861 print static final field contents
jjg@87:             Attribute a = f.attributes.get(Attribute.ConstantValue);
jjg@87:             if (a instanceof ConstantValue_attribute) {
jjg@87:                 print(" = ");
jjg@87:                 ConstantValue_attribute cv = (ConstantValue_attribute) a;
jjg@87:                 print(getConstantValue(f.descriptor, cv.constantvalue_index));
jjg@87:             }
jjg@87:         }
jjg@46:         print(";");
jjg@46:         println();
jjg@46: 
jjg@46:         if (options.showInternalSignatures)
jjg@46:             println("  Signature: " + getValue(f.descriptor));
jjg@46: 
jjg@46:         if (options.verbose && !options.compat)
jjg@46:             writeList("  flags: ", flags.getFieldFlags(), NEWLINE);
jjg@46: 
jjg@46:         if (options.showAllAttrs) {
jjg@46:             for (Attribute attr: f.attributes)
jjg@46:                 attrWriter.write(f, attr, constant_pool);
jjg@46:             println();
jjg@46:         }
jjg@46: 
jjg@46:         if (options.showDisassembled || options.showLineAndLocalVariableTables)
jjg@46:             println();
jjg@46:     }
jjg@46: 
jjg@46:     void writeMethods() {
jjg@46:         for (Method m: classFile.methods)
jjg@46:             writeMethod(m);
jjg@46:     }
jjg@46: 
jjg@46:     void writeMethod(Method m) {
jjg@46:         if (!options.checkAccess(m.access_flags))
jjg@46:             return;
jjg@46: 
jjg@46:         method = m;
jjg@46: 
jjg@46:         if (!(options.showLineAndLocalVariableTables
jjg@46:                 || options.showDisassembled
jjg@46:                 || options.verbose
jjg@46:                 || options.showInternalSignatures
jjg@46:                 || options.showAllAttrs)) {
jjg@46:             print("    ");
jjg@46:         }
jjg@46: 
jjg@46:         AccessFlags flags = m.access_flags;
jjg@46: 
jjg@46:         Descriptor d;
jjg@46:         Type.MethodType methodType;
jjg@46:         List<? extends Type> methodExceptions;
jjg@46: 
jjg@46:         Signature_attribute sigAttr = getSignature(m.attributes);
jjg@46:         if (sigAttr == null) {
jjg@46:             d = m.descriptor;
jjg@46:             methodType = null;
jjg@46:             methodExceptions = null;
jjg@46:         } else {
jjg@46:             Signature methodSig = sigAttr.getParsedSignature();
jjg@46:             d = methodSig;
jjg@46:             try {
jjg@46:                 methodType = (Type.MethodType) methodSig.getType(constant_pool);
jjg@46:                 methodExceptions = methodType.throwsTypes;
jjg@46:                 if (methodExceptions != null && methodExceptions.size() == 0)
jjg@46:                     methodExceptions = null;
jjg@46:             } catch (ConstantPoolException e) {
jjg@46:                 // report error?
jjg@46:                 // fall back on standard descriptor
jjg@46:                 methodType = null;
jjg@46:                 methodExceptions = null;
jjg@46:             }
jjg@46:         }
jjg@46: 
jjg@46:         writeModifiers(flags.getMethodModifiers());
jjg@46:         if (methodType != null) {
jjg@46:             writeListIfNotEmpty("<", methodType.typeArgTypes, "> ");
jjg@46:         }
jjg@46:         if (getName(m).equals("<init>")) {
jjg@46:             print(getJavaName(classFile));
jjg@46:             print(getParameterTypes(d, flags));
jjg@46:         } else if (getName(m).equals("<clinit>")) {
jjg@46:             print("{}");
jjg@46:         } else {
jjg@46:             print(getReturnType(d));
jjg@46:             print(" ");
jjg@46:             print(getName(m));
jjg@46:             print(getParameterTypes(d, flags));
jjg@46:         }
jjg@46: 
jjg@46:         Attribute e_attr = m.attributes.get(Attribute.Exceptions);
jjg@46:         if (e_attr != null) { // if there are generic exceptions, there must be erased exceptions
jjg@46:             if (e_attr instanceof Exceptions_attribute) {
jjg@46:                 Exceptions_attribute exceptions = (Exceptions_attribute) e_attr;
jjg@46:                 if (options.compat) { // Bug XXXXXXX whitespace
jjg@46:                     if (!(options.showLineAndLocalVariableTables
jjg@46:                             || options.showDisassembled
jjg@46:                             || options.verbose
jjg@46:                             || options.showInternalSignatures
jjg@46:                             || options.showAllAttrs)) {
jjg@46:                         print("    ");
jjg@46:                     }
jjg@46:                     print("  ");
jjg@46:                 }
jjg@46:                 print(" throws ");
jjg@46:                 if (methodExceptions != null) { // use generic list if available
jjg@46:                     writeList("", methodExceptions, "");
jjg@46:                 } else {
jjg@46:                     for (int i = 0; i < exceptions.number_of_exceptions; i++) {
jjg@46:                         if (i > 0)
jjg@46:                             print(", ");
jjg@52:                         print(getJavaException(exceptions, i));
jjg@46:                     }
jjg@46:                 }
jjg@46:             } else {
jjg@46:                 report("Unexpected or invalid value for Exceptions attribute");
jjg@46:             }
jjg@46:         }
jjg@46: 
jjg@46:         print(";");
jjg@46:         println();
jjg@46: 
jjg@46:         if (options.showInternalSignatures)
jjg@46:             println("  Signature: " + getValue(m.descriptor));
jjg@46: 
jjg@46:         if (options.verbose && !options.compat)
jjg@46:             writeList("  flags: ", flags.getMethodFlags(), NEWLINE);
jjg@46: 
jjg@46:         Code_attribute code = null;
jjg@46:         Attribute c_attr = m.attributes.get(Attribute.Code);
jjg@46:         if (c_attr != null) {
jjg@46:             if (c_attr instanceof Code_attribute)
jjg@46:                 code = (Code_attribute) c_attr;
jjg@46:             else
jjg@46:                 report("Unexpected or invalid value for Code attribute");
jjg@46:         }
jjg@46: 
jjg@46:         if (options.showDisassembled && !options.showAllAttrs) {
jjg@46:             if (code != null) {
jjg@46:                 println("  Code:");
jjg@46:                 codeWriter.writeInstrs(code);
jjg@46:                 codeWriter.writeExceptionTable(code);
jjg@46:             }
jjg@46:             println();
jjg@46:         }
jjg@46: 
jjg@46:         if (options.showLineAndLocalVariableTables) {
jjg@46:             if (code != null)
jjg@46:                 attrWriter.write(code, code.attributes.get(Attribute.LineNumberTable), constant_pool);
jjg@46:             println();
jjg@46:             if (code != null)
jjg@46:                 attrWriter.write(code, code.attributes.get(Attribute.LocalVariableTable), constant_pool);
jjg@46:             println();
jjg@46:             println();
jjg@46:         }
jjg@46: 
jjg@46:         if (options.showAllAttrs) {
jjg@46:             Attribute[] attrs = m.attributes.attrs;
jjg@46:             for (Attribute attr: attrs)
jjg@46:                 attrWriter.write(m, attr, constant_pool);
jjg@46: 
jjg@46: //            // the following condition is to mimic old javap
jjg@46: //            if (!(attrs.length > 0 &&
jjg@46: //                    attrs[attrs.length - 1] instanceof Exceptions_attribute))
jjg@46:             println();
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     void writeModifiers(Collection<String> items) {
jjg@46:         for (Object item: items) {
jjg@46:             print(item);
jjg@46:             print(" ");
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     void writeList(String prefix, Collection<?> items, String suffix) {
jjg@46:         print(prefix);
jjg@46:         String sep = "";
jjg@46:         for (Object item: items) {
jjg@46:             print(sep);
jjg@46:             print(item);
jjg@46:             sep = ", ";
jjg@46:         }
jjg@46:         print(suffix);
jjg@46:     }
jjg@46: 
jjg@46:     void writeListIfNotEmpty(String prefix, List<?> items, String suffix) {
jjg@46:         if (items != null && items.size() > 0)
jjg@46:             writeList(prefix, items, suffix);
jjg@46:     }
jjg@46: 
jjg@46:     Signature_attribute getSignature(Attributes attributes) {
jjg@46:         if (options.compat) // javap does not recognize recent attributes
jjg@46:             return null;
jjg@46:         return (Signature_attribute) attributes.get(Attribute.Signature);
jjg@46:     }
jjg@46: 
jjg@46:     String adjustVarargs(AccessFlags flags, String params) {
jjg@46:         if (flags.is(ACC_VARARGS) && !options.compat) {
jjg@46:             int i = params.lastIndexOf("[]");
jjg@46:             if (i > 0)
jjg@46:                 return params.substring(0, i) + "..." + params.substring(i+2);
jjg@46:         }
jjg@46: 
jjg@46:         return params;
jjg@46:     }
jjg@46: 
jjg@46:     String getJavaName(ClassFile cf) {
jjg@46:         try {
jjg@46:             return getJavaName(cf.getName());
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     String getJavaSuperclassName(ClassFile cf) {
jjg@46:         try {
jjg@46:             return getJavaName(cf.getSuperclassName());
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     String getJavaInterfaceName(ClassFile cf, int index) {
jjg@46:         try {
jjg@46:             return getJavaName(cf.getInterfaceName(index));
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     String getFieldType(Descriptor d) {
jjg@46:         try {
jjg@46:             return d.getFieldType(constant_pool);
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         } catch (DescriptorException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     String getReturnType(Descriptor d) {
jjg@46:         try {
jjg@46:             return d.getReturnType(constant_pool);
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         } catch (DescriptorException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     String getParameterTypes(Descriptor d, AccessFlags flags) {
jjg@46:         try {
jjg@46:             return adjustVarargs(flags, d.getParameterTypes(constant_pool));
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         } catch (DescriptorException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@52:     String getJavaException(Exceptions_attribute attr, int index) {
jjg@52:         try {
jjg@52:             return getJavaName(attr.getException(index, constant_pool));
jjg@52:         } catch (ConstantPoolException e) {
jjg@52:             return report(e);
jjg@52:         }
jjg@52:     }
jjg@52: 
jjg@46:     String getValue(Descriptor d) {
jjg@46:         try {
jjg@46:             return d.getValue(constant_pool);
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     String getFieldName(Field f) {
jjg@46:         try {
jjg@46:             return f.getName(constant_pool);
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     String getName(Method m) {
jjg@46:         try {
jjg@46:             return m.getName(constant_pool);
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     static String getJavaName(String name) {
jjg@46:         return name.replace('/', '.');
jjg@46:     }
jjg@46: 
jjg@46:     String getSourceFile(SourceFile_attribute attr) {
jjg@46:         try {
jjg@46:             return attr.getSourceFile(constant_pool);
jjg@46:         } catch (ConstantPoolException e) {
jjg@46:             return report(e);
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@87:     /**
jjg@87:      * Get the value of an entry in the constant pool as a Java constant.
jjg@87:      * Characters and booleans are represented by CONSTANT_Intgere entries.
jjg@87:      * Character and string values are processed to escape characters outside
jjg@87:      * the basic printable ASCII set.
jjg@87:      * @param d the descriptor, giving the expected type of the constant
jjg@87:      * @param index the index of the value in the constant pool
jjg@87:      * @return a printable string containing the value of the constant.
jjg@87:      */
jjg@87:     String getConstantValue(Descriptor d, int index) {
jjg@87:         try {
jjg@87:             ConstantPool.CPInfo cpInfo = constant_pool.get(index);
jjg@87: 
jjg@87:             switch (cpInfo.getTag()) {
jjg@87:                 case ConstantPool.CONSTANT_Integer: {
jjg@87:                     ConstantPool.CONSTANT_Integer_info info =
jjg@87:                             (ConstantPool.CONSTANT_Integer_info) cpInfo;
jjg@87:                     String t = d.getValue(constant_pool);
jjg@87:                     if (t.equals("C")) { // character
jjg@87:                         return getConstantCharValue((char) info.value);
jjg@87:                     } else if (t.equals("Z")) { // boolean
jjg@87:                         return String.valueOf(info.value == 1);
jjg@87:                     } else { // other: assume integer
jjg@87:                         return String.valueOf(info.value);
jjg@87:                     }
jjg@87:                 }
jjg@87: 
jjg@87:                 case ConstantPool.CONSTANT_String: {
jjg@87:                     ConstantPool.CONSTANT_String_info info =
jjg@87:                             (ConstantPool.CONSTANT_String_info) cpInfo;
jjg@87:                     return getConstantStringValue(info.getString());
jjg@87:                 }
jjg@87: 
jjg@87:                 default:
jjg@87:                     return constantWriter.stringValue(cpInfo);
jjg@87:             }
jjg@87:         } catch (ConstantPoolException e) {
jjg@87:             return "#" + index;
jjg@87:         }
jjg@87:     }
jjg@87: 
jjg@87:     private String getConstantCharValue(char c) {
jjg@87:         StringBuilder sb = new StringBuilder();
jjg@87:         sb.append('\'');
jjg@87:         sb.append(esc(c, '\''));
jjg@87:         sb.append('\'');
jjg@87:         return sb.toString();
jjg@87:     }
jjg@87: 
jjg@87:     private String getConstantStringValue(String s) {
jjg@87:         StringBuilder sb = new StringBuilder();
jjg@87:         sb.append("\"");
jjg@87:         for (int i = 0; i < s.length(); i++) {
jjg@87:             sb.append(esc(s.charAt(i), '"'));
jjg@87:         }
jjg@87:         sb.append("\"");
jjg@87:         return sb.toString();
jjg@87:     }
jjg@87: 
jjg@87:     private String esc(char c, char quote) {
jjg@87:         if (32 <= c && c <= 126 && c != quote)
jjg@87:             return String.valueOf(c);
jjg@87:         else switch (c) {
jjg@87:             case '\b': return "\\b";
jjg@87:             case '\n': return "\\n";
jjg@87:             case '\t': return "\\t";
jjg@87:             case '\f': return "\\f";
jjg@87:             case '\r': return "\\r";
jjg@87:             case '\\': return "\\\\";
jjg@87:             case '\'': return "\\'";
jjg@87:             case '\"': return "\\\"";
jjg@87:             default:   return String.format("\\u%04x", (int) c);
jjg@87:         }
jjg@87:     }
jjg@87: 
jjg@46:     private Options options;
jjg@46:     private AttributeWriter attrWriter;
jjg@46:     private CodeWriter codeWriter;
jjg@46:     private ConstantWriter constantWriter;
jjg@46:     private ClassFile classFile;
jjg@88:     private URI uri;
jjg@88:     private long lastModified;
jjg@88:     private String digestName;
jjg@88:     private byte[] digest;
jjg@88:     private int size;
jjg@46:     private ConstantPool constant_pool;
jjg@46:     private Method method;
jjg@46:     private static final String NEWLINE = System.getProperty("line.separator", "\n");
jjg@46: }