proguard.classfile.constant.visitor.ConstantStringBuilder Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of proguard-core Show documentation
ProGuardCORE is a free library to read, analyze, modify, and write Java class files.
There is a newer version: 9.1.6
/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2020 Guardsquare NV
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package proguard.classfile.constant.visitor;

import proguard.classfile.Clazz;
import proguard.classfile.constant.*;

/**
 * This {@link ConstantVisitor} collects the constants that it visits in a readable form, in a given
 * string builder.
 *
 * @author Eric Lafortune
 */
public class ConstantStringBuilder implements ConstantVisitor {
  private final StringBuilder stringBuilder;

  /**
   * Creates a new ConstantStringBuilder.
   *
   * @param stringBuilder the string builder in which descriptions can be collected.
   */
  public ConstantStringBuilder(StringBuilder stringBuilder) {
    this.stringBuilder = stringBuilder;
  }

  // Implementations for ConstantVisitor.

  public void visitAnyConstant(Clazz clazz, Constant constant) {
    stringBuilder.append("Unknown");
  }

  public void visitIntegerConstant(Clazz clazz, IntegerConstant integerConstant) {
    stringBuilder.append("Integer(" + integerConstant.u4value + ")");
  }

  public void visitLongConstant(Clazz clazz, LongConstant longConstant) {
    stringBuilder.append("Long(" + longConstant.u8value + ")");
  }

  public void visitFloatConstant(Clazz clazz, FloatConstant floatConstant) {
    stringBuilder.append("Float(" + floatConstant.f4value + ")");
  }

  public void visitDoubleConstant(Clazz clazz, DoubleConstant doubleConstant) {
    stringBuilder.append("Double(" + doubleConstant.f8value + ")");
  }

  public void visitPrimitiveArrayConstant(
      Clazz clazz, PrimitiveArrayConstant primitiveArrayConstant) {
    stringBuilder.append(
        "PrimitiveArray("
            + primitiveArrayConstant.getPrimitiveType()
            + "["
            + primitiveArrayConstant.getLength()
            + "])");
  }

  public void visitStringConstant(Clazz clazz, StringConstant stringConstant) {
    stringBuilder.append("String(\"" + stringConstant.getString(clazz) + "\")");
  }

  public void visitUtf8Constant(Clazz clazz, Utf8Constant utf8Constant) {
    stringBuilder.append("Utf8(\"" + utf8Constant.getString() + "\")");
  }

  public void visitDynamicConstant(Clazz clazz, DynamicConstant dynamicConstant) {
    stringBuilder.append("Dynamic(");
    clazz.constantPoolEntryAccept(dynamicConstant.u2nameAndTypeIndex, this);
    stringBuilder.append(", #" + dynamicConstant.u2bootstrapMethodAttributeIndex + ")");
  }

  public void visitInvokeDynamicConstant(Clazz clazz, InvokeDynamicConstant invokeDynamicConstant) {
    stringBuilder.append("InvokeDynamic(");
    clazz.constantPoolEntryAccept(invokeDynamicConstant.u2nameAndTypeIndex, this);
    stringBuilder.append(", #" + invokeDynamicConstant.u2bootstrapMethodAttributeIndex + ")");
  }

  public void visitMethodHandleConstant(Clazz clazz, MethodHandleConstant methodHandleConstant) {
    stringBuilder.append("MethodHandle(" + methodHandleConstant.u1referenceKind + ", ");
    clazz.constantPoolEntryAccept(methodHandleConstant.u2referenceIndex, this);
    stringBuilder.append(")");
  }

  public void visitModuleConstant(Clazz clazz, ModuleConstant moduleConstant) {
    stringBuilder.append("Module(" + moduleConstant.getName(clazz) + ")");
  }

  public void visitPackageConstant(Clazz clazz, PackageConstant packageConstant) {
    stringBuilder.append("Package(" + packageConstant.getName(clazz) + ")");
  }

  public void visitFieldrefConstant(Clazz clazz, FieldrefConstant fieldrefConstant) {
    stringBuilder.append(
        "Fieldref("
            + fieldrefConstant.getClassName(clazz)
            + "."
            + fieldrefConstant.getName(clazz)
            + " "
            + fieldrefConstant.getType(clazz)
            + ")");
  }

  public void visitInterfaceMethodrefConstant(
      Clazz clazz, InterfaceMethodrefConstant interfaceMethodrefConstant) {
    stringBuilder.append(
        "InterfaceMethodref("
            + interfaceMethodrefConstant.getClassName(clazz)
            + "."
            + interfaceMethodrefConstant.getName(clazz)
            + interfaceMethodrefConstant.getType(clazz)
            + ")");
  }

  public void visitMethodrefConstant(Clazz clazz, MethodrefConstant methodrefConstant) {
    stringBuilder.append(
        "Methodref("
            + methodrefConstant.getClassName(clazz)
            + "."
            + methodrefConstant.getName(clazz)
            + methodrefConstant.getType(clazz)
            + ")");
  }

  public void visitClassConstant(Clazz clazz, ClassConstant classConstant) {
    stringBuilder.append("Class(" + classConstant.getName(clazz) + ")");
  }

  public void visitMethodTypeConstant(Clazz clazz, MethodTypeConstant methodTypeConstant) {
    stringBuilder.append("MethodType(" + methodTypeConstant.getType(clazz) + ")");
  }

  public void visitNameAndTypeConstant(Clazz clazz, NameAndTypeConstant nameAndTypeConstant) {
    stringBuilder.append(
        "NameAndType("
            + nameAndTypeConstant.getName(clazz)
            + ", "
            + nameAndTypeConstant.getType(clazz)
            + ")");
  }
}