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refactor

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FranzHaidnor
2023-10-25 15:13:44 +08:00
parent 84c1f7f535
commit c91945c791
181 changed files with 6917 additions and 5349 deletions
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9
pom.xml
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@@ -43,6 +43,13 @@
<version>2.0.7</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.26</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
@@ -68,7 +75,7 @@
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>haidnor.jvm.Main</mainClass>
<mainClass>haidnor.jvm.HaidnorJVM</mainClass>
</transformer>
</transformers>
</configuration>

83
src/main/java/haidnor/jvm/HaidnorJVM.java Normal file
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@@ -0,0 +1,83 @@
package haidnor.jvm;
import haidnor.jvm.bcel.classfile.JavaClass;
import haidnor.jvm.classloader.JVMClassLoader;
import haidnor.jvm.core.JavaExecutionEngine;
import haidnor.jvm.rtda.Metaspace;
import haidnor.jvm.runtime.JVMThread;
import haidnor.jvm.util.JVMThreadHolder;
import lombok.SneakyThrows;
import org.apache.commons.cli.*;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
/**
* <a href="https://github.com/FranzHaidnor">GitHub FranzHaidnor</a>
*/
public class HaidnorJVM {
@SneakyThrows
public static void main(String[] args) {
String banner = """
██╗ ██╗ █████╗ ██╗██████╗ ███╗ ██╗ ██████╗ ██████╗ ██╗██╗ ██╗███╗ ███╗
██║ ██║██╔══██╗██║██╔══██╗████╗ ██║██╔═══██╗██╔══██╗ ██║██║ ██║████╗ ████║
███████║███████║██║██║ ██║██╔██╗ ██║██║ ██║██████╔╝ ██║██║ ██║██╔████╔██║
██╔══██║██╔══██║██║██║ ██║██║╚██╗██║██║ ██║██╔══██╗ ██ ██║╚██╗ ██╔╝██║╚██╔╝██║
██║ ██║██║ ██║██║██████╔╝██║ ╚████║╚██████╔╝██║ ██║ ╚█████╔╝ ╚████╔╝ ██║ ╚═╝ ██║
╚═╝ ╚═╝╚═╝ ╚═╝╚═╝╚═════╝ ╚═╝ ╚═══╝ ╚═════╝ ╚═╝ ╚═╝ ╚════╝ ╚═══╝ ╚═╝ ╚═╝
""";
System.out.println(banner);
CommandLine cmd = initCommandLine(args);
// 指定从 .jar 文件运行
if (cmd.hasOption("jar")) {
String jarFilePath = cmd.getOptionValue("jar");
try (JarFile jarFile = new JarFile(jarFilePath)) {
JVMClassLoader classLoader = new JVMClassLoader(jarFile, "ApplicationClassLoader");
String mainClass = jarFile.getManifest().getMainAttributes().getValue("Main-Class");
Enumeration<JarEntry> entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
if (!entry.isDirectory() && entry.getName().endsWith(".class")) {
String className = entry.getName().replace('/', '.').substring(0, entry.getName().length() - 6);
if (className.equals(mainClass)) {
JVMThreadHolder.set(new JVMThread());
JavaClass javaClass = classLoader.loadWithJar(jarFile, entry);
Metaspace.registerJavaClass(javaClass);
JavaExecutionEngine.callMainMethod(javaClass);
return;
}
}
}
}
}
// 指定从 .class 文件运行
if (cmd.hasOption("class")) {
JVMThreadHolder.set(new JVMThread());
String path = cmd.getOptionValue("class");
JVMClassLoader bootClassLoader = new JVMClassLoader("ApplicationClassLoader");
JavaClass javaClass = bootClassLoader.loadWithAbsolutePath(path);
JavaExecutionEngine.callMainMethod(javaClass);
}
}
private static CommandLine initCommandLine(String[] args) throws ParseException {
Option jarOption = new Option("jar", true, "运行 jar 程序");
Option classOption = new Option("class", true, "运行 .class 字节码文件");
OptionGroup optionGroup = new OptionGroup();
optionGroup.addOption(jarOption).addOption(classOption);
Options options = new Options();
options.addOptionGroup(optionGroup);
CommandLineParser parser = new DefaultParser();
return parser.parse(options, args);
}
}

1425
src/main/java/haidnor/jvm/bcel/Const.java
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56
src/main/java/haidnor/jvm/bcel/ExceptionConst.java
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@@ -25,24 +25,14 @@ import org.apache.commons.lang3.ArrayUtils;
*/
public final class ExceptionConst {
/**
* Enum corresponding to the various Exception Class arrays, used by
* {@link ExceptionConst#createExceptions(EXCS, Class...)}
*/
public enum EXCS {
EXCS_CLASS_AND_INTERFACE_RESOLUTION, EXCS_FIELD_AND_METHOD_RESOLUTION, EXCS_INTERFACE_METHOD_RESOLUTION, EXCS_STRING_RESOLUTION, EXCS_ARRAY_EXCEPTION,
}
/**
* The mother of all exceptions
*/
public static final Class<Throwable> THROWABLE = Throwable.class;
/**
* Super class of any run-time exception
*/
public static final Class<RuntimeException> RUNTIME_EXCEPTION = RuntimeException.class;
/**
* Super class of any linking exception (aka Linkage Error)
*/
@@ -61,62 +51,56 @@ public final class ExceptionConst {
public static final Class<NoSuchMethodError> NO_SUCH_METHOD_ERROR = NoSuchMethodError.class;
public static final Class<NoClassDefFoundError> NO_CLASS_DEF_FOUND_ERROR = NoClassDefFoundError.class;
public static final Class<UnsatisfiedLinkError> UNSATISFIED_LINK_ERROR = UnsatisfiedLinkError.class;
public static final Class<VerifyError> VERIFY_ERROR = VerifyError.class;
/* UnsupportedClassVersionError is new in JDK 1.2 */
// public static final Class UnsupportedClassVersionError = UnsupportedClassVersionError.class;
/**
* Run-Time Exceptions
*/
public static final Class<NullPointerException> NULL_POINTER_EXCEPTION = NullPointerException.class;
/* UnsupportedClassVersionError is new in JDK 1.2 */
// public static final Class UnsupportedClassVersionError = UnsupportedClassVersionError.class;
public static final Class<ArrayIndexOutOfBoundsException> ARRAY_INDEX_OUT_OF_BOUNDS_EXCEPTION = ArrayIndexOutOfBoundsException.class;
public static final Class<ArithmeticException> ARITHMETIC_EXCEPTION = ArithmeticException.class;
public static final Class<NegativeArraySizeException> NEGATIVE_ARRAY_SIZE_EXCEPTION = NegativeArraySizeException.class;
public static final Class<ClassCastException> CLASS_CAST_EXCEPTION = ClassCastException.class;
public static final Class<IllegalMonitorStateException> ILLEGAL_MONITOR_STATE = IllegalMonitorStateException.class;
/**
* Pre-defined exception arrays according to chapters 5.1-5.4 of the Java Virtual Machine Specification
*/
private static final Class<?>[] EXCS_CLASS_AND_INTERFACE_RESOLUTION = {NO_CLASS_DEF_FOUND_ERROR, CLASS_FORMAT_ERROR, VERIFY_ERROR, ABSTRACT_METHOD_ERROR,
EXCEPTION_IN_INITIALIZER_ERROR, ILLEGAL_ACCESS_ERROR}; // Chapter 5.1
EXCEPTION_IN_INITIALIZER_ERROR, ILLEGAL_ACCESS_ERROR}; // Chapter 5.1
private static final Class<?>[] EXCS_FIELD_AND_METHOD_RESOLUTION = {NO_SUCH_FIELD_ERROR, ILLEGAL_ACCESS_ERROR, NO_SUCH_METHOD_ERROR}; // Chapter 5.2
/**
* Empty array.
*/
private static final Class<?>[] EXCS_INTERFACE_METHOD_RESOLUTION = new Class[0]; // Chapter 5.3 (as below)
/**
* Empty array.
*/
private static final Class<?>[] EXCS_STRING_RESOLUTION = new Class[0];
// Chapter 5.4 (no errors but the ones that _always_ could happen! How stupid.)
private static final Class<?>[] EXCS_ARRAY_EXCEPTION = {NULL_POINTER_EXCEPTION, ARRAY_INDEX_OUT_OF_BOUNDS_EXCEPTION};
/**
* Creates a copy of the specified Exception Class array combined with any additional Exception classes.
*
* @param type the basic array type
* @param type the basic array type
* @param extraClasses additional classes, if any
* @return the merged array
*/
public static Class<?>[] createExceptions(final EXCS type, final Class<?>... extraClasses) {
switch (type) {
case EXCS_CLASS_AND_INTERFACE_RESOLUTION:
return mergeExceptions(EXCS_CLASS_AND_INTERFACE_RESOLUTION, extraClasses);
case EXCS_ARRAY_EXCEPTION:
return mergeExceptions(EXCS_ARRAY_EXCEPTION, extraClasses);
case EXCS_FIELD_AND_METHOD_RESOLUTION:
return mergeExceptions(EXCS_FIELD_AND_METHOD_RESOLUTION, extraClasses);
case EXCS_INTERFACE_METHOD_RESOLUTION:
return mergeExceptions(EXCS_INTERFACE_METHOD_RESOLUTION, extraClasses);
case EXCS_STRING_RESOLUTION:
return mergeExceptions(EXCS_STRING_RESOLUTION, extraClasses);
default:
throw new AssertionError("Cannot happen; unexpected enum value: " + type);
case EXCS_CLASS_AND_INTERFACE_RESOLUTION:
return mergeExceptions(EXCS_CLASS_AND_INTERFACE_RESOLUTION, extraClasses);
case EXCS_ARRAY_EXCEPTION:
return mergeExceptions(EXCS_ARRAY_EXCEPTION, extraClasses);
case EXCS_FIELD_AND_METHOD_RESOLUTION:
return mergeExceptions(EXCS_FIELD_AND_METHOD_RESOLUTION, extraClasses);
case EXCS_INTERFACE_METHOD_RESOLUTION:
return mergeExceptions(EXCS_INTERFACE_METHOD_RESOLUTION, extraClasses);
case EXCS_STRING_RESOLUTION:
return mergeExceptions(EXCS_STRING_RESOLUTION, extraClasses);
default:
throw new AssertionError("Cannot happen; unexpected enum value: " + type);
}
}
@@ -125,4 +109,12 @@ public final class ExceptionConst {
return ArrayUtils.addAll(input, extraClasses);
}
/**
* Enum corresponding to the various Exception Class arrays, used by
* {@link ExceptionConst#createExceptions(EXCS, Class...)}
*/
public enum EXCS {
EXCS_CLASS_AND_INTERFACE_RESOLUTION, EXCS_FIELD_AND_METHOD_RESOLUTION, EXCS_INTERFACE_METHOD_RESOLUTION, EXCS_STRING_RESOLUTION, EXCS_ARRAY_EXCEPTION,
}
}

24
src/main/java/haidnor/jvm/bcel/Repository.java
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@@ -53,7 +53,7 @@ public abstract class Repository {
/**
* @return all interfaces implemented by class and its super classes and the interfaces that those interfaces extend,
* and so on. (Some people call this a transitive hull).
* and so on. (Some people call this a transitive hull).
* @throws ClassNotFoundException if any of the class's superclasses or superinterfaces can't be found
*/
public static JavaClass[] getInterfaces(final JavaClass clazz) throws ClassNotFoundException {
@@ -62,9 +62,9 @@ public abstract class Repository {
/**
* @return all interfaces implemented by class and its super classes and the interfaces that extend those interfaces,
* and so on
* and so on
* @throws ClassNotFoundException if the named class can't be found, or if any of its superclasses or superinterfaces
* can't be found
* can't be found
*/
public static JavaClass[] getInterfaces(final String className) throws ClassNotFoundException {
return getInterfaces(lookupClass(className));
@@ -77,6 +77,13 @@ public abstract class Repository {
return repository;
}
/**
* Sets repository instance to be used for class loading
*/
public static void setRepository(final haidnor.jvm.bcel.util.Repository rep) {
repository = rep;
}
/**
* @return list of super classes of clazz in ascending order, i.e., Object is always the last element
* @throws ClassNotFoundException if any of the superclasses can't be found
@@ -162,9 +169,9 @@ public abstract class Repository {
/**
* Tries to find class source using the internal repository instance.
*
* @see Class
* @return JavaClass object for given runtime class
* @throws ClassNotFoundException if the class could not be found or parsed correctly
* @see Class
*/
public static JavaClass lookupClass(final Class<?> clazz) throws ClassNotFoundException {
return repository.loadClass(clazz);
@@ -182,7 +189,7 @@ public abstract class Repository {
/**
* @return class file object for given Java class by looking on the system class path; returns null if the class file
* can't be found
* can't be found
*/
public static ClassPath.ClassFile lookupClassFile(final String className) {
try (ClassPath path = repository.getClassPath()) {
@@ -205,11 +212,4 @@ public abstract class Repository {
public static void removeClass(final String clazz) {
repository.removeClass(repository.findClass(clazz));
}
/**
* Sets repository instance to be used for class loading
*/
public static void setRepository(final haidnor.jvm.bcel.util.Repository rep) {
repository = rep;
}
}

36
src/main/java/haidnor/jvm/bcel/classfile/AccessFlags.java
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@@ -46,6 +46,15 @@ public abstract class AccessFlags {
return access_flags;
}
/**
* Set access flags aka "modifiers".
*
* @param accessFlags Access flags of the object.
*/
public final void setAccessFlags(final int accessFlags) {
this.access_flags = accessFlags;
}
/**
* @return Access flags of the object aka. "modifiers".
*/
@@ -53,6 +62,15 @@ public abstract class AccessFlags {
return access_flags;
}
/**
* Set access flags aka "modifiers".
*
* @param accessFlags Access flags of the object.
*/
public final void setModifiers(final int accessFlags) {
setAccessFlags(accessFlags);
}
public final boolean isAbstract() {
return (access_flags & Const.ACC_ABSTRACT) != 0;
}
@@ -181,15 +199,6 @@ public abstract class AccessFlags {
setFlag(Const.ACC_VOLATILE, flag);
}
/**
* Set access flags aka "modifiers".
*
* @param accessFlags Access flags of the object.
*/
public final void setAccessFlags(final int accessFlags) {
this.access_flags = accessFlags;
}
private void setFlag(final int flag, final boolean set) {
if ((access_flags & flag) != 0) { // Flag is set already
if (!set) {
@@ -199,13 +208,4 @@ public abstract class AccessFlags {
access_flags |= flag;
}
}
/**
* Set access flags aka "modifiers".
*
* @param accessFlags Access flags of the object.
*/
public final void setModifiers(final int accessFlags) {
setAccessFlags(accessFlags);
}
}

10
src/main/java/haidnor/jvm/bcel/classfile/AnnotationDefault.java
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@@ -33,9 +33,9 @@ public class AnnotationDefault extends Attribute {
private ElementValue defaultValue;
/**
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
*/
AnnotationDefault(final int nameIndex, final int length, final DataInput input, final ConstantPool constantPool) throws IOException {
@@ -44,8 +44,8 @@ public class AnnotationDefault extends Attribute {
}
/**
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param defaultValue the annotation's default value
* @param constantPool Array of constants
*/

28
src/main/java/haidnor/jvm/bcel/classfile/AnnotationEntry.java
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@@ -31,11 +31,21 @@ import java.util.stream.Stream;
public class AnnotationEntry implements Node {
public static final AnnotationEntry[] EMPTY_ARRAY = {};
private final int typeIndex;
private final ConstantPool constantPool;
private final boolean isRuntimeVisible;
private List<ElementValuePair> elementValuePairs;
public AnnotationEntry(final int typeIndex, final ConstantPool constantPool, final boolean isRuntimeVisible) {
this.typeIndex = typeIndex;
this.constantPool = constantPool;
this.isRuntimeVisible = isRuntimeVisible;
}
public static AnnotationEntry[] createAnnotationEntries(final Attribute[] attrs) {
// Find attributes that contain annotation data
return Stream.of(attrs).filter(Annotations.class::isInstance).flatMap(e -> Stream.of(((Annotations) e).getAnnotationEntries()))
.toArray(AnnotationEntry[]::new);
.toArray(AnnotationEntry[]::new);
}
/**
@@ -53,25 +63,11 @@ public class AnnotationEntry implements Node {
annotationEntry.elementValuePairs = new ArrayList<>();
for (int i = 0; i < numElementValuePairs; i++) {
annotationEntry.elementValuePairs
.add(new ElementValuePair(input.readUnsignedShort(), ElementValue.readElementValue(input, constantPool), constantPool));
.add(new ElementValuePair(input.readUnsignedShort(), ElementValue.readElementValue(input, constantPool), constantPool));
}
return annotationEntry;
}
private final int typeIndex;
private final ConstantPool constantPool;
private final boolean isRuntimeVisible;
private List<ElementValuePair> elementValuePairs;
public AnnotationEntry(final int typeIndex, final ConstantPool constantPool, final boolean isRuntimeVisible) {
this.typeIndex = typeIndex;
this.constantPool = constantPool;
this.isRuntimeVisible = isRuntimeVisible;
}
/**
* Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
* I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

6
src/main/java/haidnor/jvm/bcel/classfile/Annotations.java
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@@ -31,8 +31,8 @@ import java.util.stream.Stream;
*/
public abstract class Annotations extends Attribute implements Iterable<AnnotationEntry> {
private AnnotationEntry[] annotationTable;
private final boolean isRuntimeVisible;
private AnnotationEntry[] annotationTable;
/**
* Constructs an instance.
@@ -45,7 +45,7 @@ public abstract class Annotations extends Attribute implements Iterable<Annotati
* @param isRuntimeVisible whether this Annotation visible at runtime
*/
public Annotations(final byte annotationType, final int nameIndex, final int length, final AnnotationEntry[] annotationTable,
final ConstantPool constantPool, final boolean isRuntimeVisible) {
final ConstantPool constantPool, final boolean isRuntimeVisible) {
super(annotationType, nameIndex, length, constantPool);
this.annotationTable = annotationTable;
this.isRuntimeVisible = isRuntimeVisible;
@@ -63,7 +63,7 @@ public abstract class Annotations extends Attribute implements Iterable<Annotati
* @throws IOException if an I/O error occurs.
*/
Annotations(final byte annotationType, final int nameIndex, final int length, final DataInput input, final ConstantPool constantPool,
final boolean isRuntimeVisible) throws IOException {
final boolean isRuntimeVisible) throws IOException {
this(annotationType, nameIndex, length, (AnnotationEntry[]) null, constantPool, isRuntimeVisible);
final int annotationTableLength = input.readUnsignedShort();
annotationTable = new AnnotationEntry[annotationTableLength];

292
src/main/java/haidnor/jvm/bcel/classfile/Attribute.java
View File

@@ -53,22 +53,63 @@ import java.util.Map;
*/
public abstract class Attribute implements Cloneable, Node {
private static final boolean debug = Boolean.getBoolean(Attribute.class.getCanonicalName() + ".debug"); // Debugging on/off
private static final Map<String, Object> READERS = new HashMap<>();
/**
* Empty array.
*
* @since 6.6.0
*/
public static final Attribute[] EMPTY_ARRAY = {};
private static final boolean debug = Boolean.getBoolean(Attribute.class.getCanonicalName() + ".debug"); // Debugging on/off
private static final Map<String, Object> READERS = new HashMap<>();
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected int name_index; // Points to attribute name in constant pool TODO make private (has getter & setter)
/**
* @deprecated (since 6.0) (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected int length; // Content length of attribute field TODO make private (has getter & setter)
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected byte tag; // Tag to distinguish subclasses TODO make private & final; supposed to be immutable
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected ConstantPool constant_pool; // TODO make private (has getter & setter)
/**
* Constructs an instance.
*
* <pre>
* attribute_info {
* u2 attribute_name_index;
* u4 attribute_length;
* u1 info[attribute_length];
* }
* </pre>
*
* @param tag tag.
* @param nameIndex u2 name index.
* @param length u4 length.
* @param constantPool constant pool.
*/
protected Attribute(final byte tag, final int nameIndex, final int length, final ConstantPool constantPool) {
this.tag = tag;
this.name_index = Args.requireU2(nameIndex, 0, constantPool.getLength(), getClass().getSimpleName() + " name index");
this.length = Args.requireU4(length, getClass().getSimpleName() + " attribute length");
this.constant_pool = constantPool;
}
/**
* Add an Attribute reader capable of parsing (user-defined) attributes named "name". You should not add readers for the
* standard attributes such as "LineNumberTable", because those are handled internally.
*
* @param name the name of the attribute as stored in the class file
* @param name the name of the attribute as stored in the class file
* @param unknownAttributeReader the reader object
*/
public static void addAttributeReader(final String name, final UnknownAttributeReader unknownAttributeReader) {
@@ -85,13 +126,12 @@ public abstract class Attribute implements Cloneable, Node {
* Class method reads one attribute from the input data stream. This method must not be accessible from the outside. It
* is called by the Field and Method constructor methods.
*
* @see JavaField
* @see JavaMethod
*
* @param dataInput Input stream
* @param dataInput Input stream
* @param constantPool Array of constants
* @return Attribute
* @throws IOException if an I/O error occurs.
* @see JavaField
* @see JavaMethod
* @since 6.0
*/
public static Attribute readAttribute(final DataInput dataInput, final ConstantPool constantPool) throws IOException {
@@ -113,74 +153,74 @@ public abstract class Attribute implements Cloneable, Node {
// Call proper constructor, depending on 'tag'
switch (tag) {
case Const.ATTR_UNKNOWN:
final Object r = READERS.get(name);
if (r instanceof UnknownAttributeReader) {
return ((UnknownAttributeReader) r).createAttribute(nameIndex, length, dataInput, constantPool);
}
return new Unknown(nameIndex, length, dataInput, constantPool);
case Const.ATTR_CONSTANT_VALUE:
return new ConstantValue(nameIndex, length, dataInput, constantPool);
case Const.ATTR_SOURCE_FILE:
return new SourceFile(nameIndex, length, dataInput, constantPool);
case Const.ATTR_CODE:
return new Code(nameIndex, length, dataInput, constantPool);
case Const.ATTR_EXCEPTIONS:
return new ExceptionTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_LINE_NUMBER_TABLE:
return new LineNumberTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_LOCAL_VARIABLE_TABLE:
return new LocalVariableTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_INNER_CLASSES:
return new InnerClasses(nameIndex, length, dataInput, constantPool);
case Const.ATTR_SYNTHETIC:
return new Synthetic(nameIndex, length, dataInput, constantPool);
case Const.ATTR_DEPRECATED:
return new Deprecated(nameIndex, length, dataInput, constantPool);
case Const.ATTR_PMG:
return new PMGClass(nameIndex, length, dataInput, constantPool);
case Const.ATTR_SIGNATURE:
return new Signature(nameIndex, length, dataInput, constantPool);
case Const.ATTR_STACK_MAP:
// old style stack map: unneeded for JDK5 and below;
// illegal(?) for JDK6 and above. So just delete with a warning.
println("Warning: Obsolete StackMap attribute ignored.");
return new Unknown(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_VISIBLE_ANNOTATIONS:
return new RuntimeVisibleAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_INVISIBLE_ANNOTATIONS:
return new RuntimeInvisibleAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS:
return new RuntimeVisibleParameterAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS:
return new RuntimeInvisibleParameterAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_ANNOTATION_DEFAULT:
return new AnnotationDefault(nameIndex, length, dataInput, constantPool);
case Const.ATTR_LOCAL_VARIABLE_TYPE_TABLE:
return new LocalVariableTypeTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_ENCLOSING_METHOD:
return new EnclosingMethod(nameIndex, length, dataInput, constantPool);
case Const.ATTR_STACK_MAP_TABLE:
// read new style stack map: StackMapTable. The rest of the code
// calls this a StackMap for historical reasons.
return new StackMap(nameIndex, length, dataInput, constantPool);
case Const.ATTR_BOOTSTRAP_METHODS:
return new BootstrapMethods(nameIndex, length, dataInput, constantPool);
case Const.ATTR_METHOD_PARAMETERS:
return new MethodParameters(nameIndex, length, dataInput, constantPool);
case Const.ATTR_MODULE:
return new Module(nameIndex, length, dataInput, constantPool);
case Const.ATTR_MODULE_PACKAGES:
return new ModulePackages(nameIndex, length, dataInput, constantPool);
case Const.ATTR_MODULE_MAIN_CLASS:
return new ModuleMainClass(nameIndex, length, dataInput, constantPool);
case Const.ATTR_NEST_HOST:
return new NestHost(nameIndex, length, dataInput, constantPool);
case Const.ATTR_NEST_MEMBERS:
return new NestMembers(nameIndex, length, dataInput, constantPool);
default:
// Never reached
throw new IllegalStateException("Unrecognized attribute type tag parsed: " + tag);
case Const.ATTR_UNKNOWN:
final Object r = READERS.get(name);
if (r instanceof UnknownAttributeReader) {
return ((UnknownAttributeReader) r).createAttribute(nameIndex, length, dataInput, constantPool);
}
return new Unknown(nameIndex, length, dataInput, constantPool);
case Const.ATTR_CONSTANT_VALUE:
return new ConstantValue(nameIndex, length, dataInput, constantPool);
case Const.ATTR_SOURCE_FILE:
return new SourceFile(nameIndex, length, dataInput, constantPool);
case Const.ATTR_CODE:
return new Code(nameIndex, length, dataInput, constantPool);
case Const.ATTR_EXCEPTIONS:
return new ExceptionTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_LINE_NUMBER_TABLE:
return new LineNumberTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_LOCAL_VARIABLE_TABLE:
return new LocalVariableTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_INNER_CLASSES:
return new InnerClasses(nameIndex, length, dataInput, constantPool);
case Const.ATTR_SYNTHETIC:
return new Synthetic(nameIndex, length, dataInput, constantPool);
case Const.ATTR_DEPRECATED:
return new Deprecated(nameIndex, length, dataInput, constantPool);
case Const.ATTR_PMG:
return new PMGClass(nameIndex, length, dataInput, constantPool);
case Const.ATTR_SIGNATURE:
return new Signature(nameIndex, length, dataInput, constantPool);
case Const.ATTR_STACK_MAP:
// old style stack map: unneeded for JDK5 and below;
// illegal(?) for JDK6 and above. So just delete with a warning.
println("Warning: Obsolete StackMap attribute ignored.");
return new Unknown(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_VISIBLE_ANNOTATIONS:
return new RuntimeVisibleAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_INVISIBLE_ANNOTATIONS:
return new RuntimeInvisibleAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS:
return new RuntimeVisibleParameterAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS:
return new RuntimeInvisibleParameterAnnotations(nameIndex, length, dataInput, constantPool);
case Const.ATTR_ANNOTATION_DEFAULT:
return new AnnotationDefault(nameIndex, length, dataInput, constantPool);
case Const.ATTR_LOCAL_VARIABLE_TYPE_TABLE:
return new LocalVariableTypeTable(nameIndex, length, dataInput, constantPool);
case Const.ATTR_ENCLOSING_METHOD:
return new EnclosingMethod(nameIndex, length, dataInput, constantPool);
case Const.ATTR_STACK_MAP_TABLE:
// read new style stack map: StackMapTable. The rest of the code
// calls this a StackMap for historical reasons.
return new StackMap(nameIndex, length, dataInput, constantPool);
case Const.ATTR_BOOTSTRAP_METHODS:
return new BootstrapMethods(nameIndex, length, dataInput, constantPool);
case Const.ATTR_METHOD_PARAMETERS:
return new MethodParameters(nameIndex, length, dataInput, constantPool);
case Const.ATTR_MODULE:
return new Module(nameIndex, length, dataInput, constantPool);
case Const.ATTR_MODULE_PACKAGES:
return new ModulePackages(nameIndex, length, dataInput, constantPool);
case Const.ATTR_MODULE_MAIN_CLASS:
return new ModuleMainClass(nameIndex, length, dataInput, constantPool);
case Const.ATTR_NEST_HOST:
return new NestHost(nameIndex, length, dataInput, constantPool);
case Const.ATTR_NEST_MEMBERS:
return new NestMembers(nameIndex, length, dataInput, constantPool);
default:
// Never reached
throw new IllegalStateException("Unrecognized attribute type tag parsed: " + tag);
}
}
@@ -188,13 +228,12 @@ public abstract class Attribute implements Cloneable, Node {
* Class method reads one attribute from the input data stream. This method must not be accessible from the outside. It
* is called by the Field and Method constructor methods.
*
* @see JavaField
* @see JavaMethod
*
* @param dataInputStream Input stream
* @param constantPool Array of constants
* @param constantPool Array of constants
* @return Attribute
* @throws IOException if an I/O error occurs.
* @see JavaField
* @see JavaMethod
*/
public static Attribute readAttribute(final DataInputStream dataInputStream, final ConstantPool constantPool) throws IOException {
return readAttribute((DataInput) dataInputStream, constantPool);
@@ -209,53 +248,6 @@ public abstract class Attribute implements Cloneable, Node {
READERS.remove(name);
}
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected int name_index; // Points to attribute name in constant pool TODO make private (has getter & setter)
/**
* @deprecated (since 6.0) (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected int length; // Content length of attribute field TODO make private (has getter & setter)
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected byte tag; // Tag to distinguish subclasses TODO make private & final; supposed to be immutable
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected ConstantPool constant_pool; // TODO make private (has getter & setter)
/**
* Constructs an instance.
*
* <pre>
* attribute_info {
* u2 attribute_name_index;
* u4 attribute_length;
* u1 info[attribute_length];
* }
* </pre>
*
* @param tag tag.
* @param nameIndex u2 name index.
* @param length u4 length.
* @param constantPool constant pool.
*/
protected Attribute(final byte tag, final int nameIndex, final int length, final ConstantPool constantPool) {
this.tag = tag;
this.name_index = Args.requireU2(nameIndex, 0, constantPool.getLength(), getClass().getSimpleName() + " name index");
this.length = Args.requireU4(length, getClass().getSimpleName() + " attribute length");
this.constant_pool = constantPool;
}
/**
* Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
* I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
@@ -306,6 +298,14 @@ public abstract class Attribute implements Cloneable, Node {
return constant_pool;
}
/**
* @param constantPool Constant pool to be used for this object.
* @see ConstantPool
*/
public final void setConstantPool(final ConstantPool constantPool) {
this.constant_pool = constantPool;
}
/**
* @return Length of attribute field in bytes.
*/
@@ -313,6 +313,13 @@ public abstract class Attribute implements Cloneable, Node {
return length;
}
/**
* @param length length in bytes.
*/
public final void setLength(final int length) {
this.length = length;
}
/**
* @return Name of attribute
* @since 6.0
@@ -328,28 +335,6 @@ public abstract class Attribute implements Cloneable, Node {
return name_index;
}
/**
* @return Tag of attribute, i.e., its type. Value may not be altered, thus there is no setTag() method.
*/
public final byte getTag() {
return tag;
}
/**
* @param constantPool Constant pool to be used for this object.
* @see ConstantPool
*/
public final void setConstantPool(final ConstantPool constantPool) {
this.constant_pool = constantPool;
}
/**
* @param length length in bytes.
*/
public final void setLength(final int length) {
this.length = length;
}
/**
* @param nameIndex of attribute.
*/
@@ -357,6 +342,13 @@ public abstract class Attribute implements Cloneable, Node {
this.name_index = nameIndex;
}
/**
* @return Tag of attribute, i.e., its type. Value may not be altered, thus there is no setTag() method.
*/
public final byte getTag() {
return tag;
}
/**
* @return attribute name.
*/

38
src/main/java/haidnor/jvm/bcel/classfile/BootstrapMethod.java
View File

@@ -29,15 +29,19 @@ import java.util.Arrays;
* and an array of the bootstrap arguments.
*
* @see <a href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.23"> The class File Format :
* The BootstrapMethods Attribute</a>
* The BootstrapMethods Attribute</a>
* @since 6.0
*/
public class BootstrapMethod implements Cloneable {
/** Index of the CONSTANT_MethodHandle_info structure in the constant_pool table */
/**
* Index of the CONSTANT_MethodHandle_info structure in the constant_pool table
*/
private int bootstrapMethodRef;
/** Array of references to the constant_pool table */
/**
* Array of references to the constant_pool table
*/
private int[] bootstrapArguments;
/**
@@ -110,20 +114,6 @@ public class BootstrapMethod implements Cloneable {
return bootstrapArguments;
}
/**
* @return index into constant_pool of bootstrap_method
*/
public int getBootstrapMethodRef() {
return bootstrapMethodRef;
}
/**
* @return count of number of boostrap arguments
*/
public int getNumBootstrapArguments() {
return bootstrapArguments.length;
}
/**
* @param bootstrapArguments int[] indices into constant_pool of CONSTANT_[type]_info
*/
@@ -131,6 +121,13 @@ public class BootstrapMethod implements Cloneable {
this.bootstrapArguments = bootstrapArguments;
}
/**
* @return index into constant_pool of bootstrap_method
*/
public int getBootstrapMethodRef() {
return bootstrapMethodRef;
}
/**
* @param bootstrapMethodRef int index into constant_pool of CONSTANT_MethodHandle
*/
@@ -138,6 +135,13 @@ public class BootstrapMethod implements Cloneable {
this.bootstrapMethodRef = bootstrapMethodRef;
}
/**
* @return count of number of boostrap arguments
*/
public int getNumBootstrapArguments() {
return bootstrapArguments.length;
}
/**
* @return String representation.
*/

24
src/main/java/haidnor/jvm/bcel/classfile/BootstrapMethods.java
View File

@@ -29,7 +29,7 @@ import java.util.stream.Stream;
* This class represents a BootstrapMethods attribute.
*
* @see <a href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.23"> The class File Format :
* The BootstrapMethods Attribute</a>
* The BootstrapMethods Attribute</a>
* @since 6.0
*/
public class BootstrapMethods extends Attribute implements Iterable<BootstrapMethod> {
@@ -47,10 +47,10 @@ public class BootstrapMethods extends Attribute implements Iterable<BootstrapMet
}
/**
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param bootstrapMethods array of bootstrap methods
* @param constantPool Array of constants
* @param constantPool Array of constants
*/
public BootstrapMethods(final int nameIndex, final int length, final BootstrapMethod[] bootstrapMethods, final ConstantPool constantPool) {
super(Const.ATTR_BOOTSTRAP_METHODS, nameIndex, length, constantPool);
@@ -60,9 +60,9 @@ public class BootstrapMethods extends Attribute implements Iterable<BootstrapMet
/**
* Construct object from Input stream.
*
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
* @throws IOException if an I/O error occurs.
*/
@@ -122,11 +122,6 @@ public class BootstrapMethods extends Attribute implements Iterable<BootstrapMet
return bootstrapMethods;
}
@Override
public Iterator<BootstrapMethod> iterator() {
return Stream.of(bootstrapMethods).iterator();
}
/**
* @param bootstrapMethods the array of bootstrap methods
*/
@@ -134,6 +129,11 @@ public class BootstrapMethods extends Attribute implements Iterable<BootstrapMet
this.bootstrapMethods = bootstrapMethods;
}
@Override
public Iterator<BootstrapMethod> iterator() {
return Stream.of(bootstrapMethods).iterator();
}
/**
* @return String representation.
*/

30
src/main/java/haidnor/jvm/bcel/classfile/ClassParser.java
View File

@@ -26,7 +26,7 @@ import java.util.zip.ZipFile;
* Wrapper class that parses a given Java .class file. The method <a href ="#parse">parse</a> returns a
* <a href ="JavaClass.html"> JavaClass</a> object on success. When an I/O error or an inconsistency occurs an
* appropriate exception is propagated back to the caller.
*
* <p>
* The structure and the names comply, except for a few conveniences, exactly with the
* <a href="http://docs.oracle.com/javase/specs/"> JVM specification 1.0</a>. See this paper for further details about
* the structure of a bytecode file.
@@ -34,9 +34,10 @@ import java.util.zip.ZipFile;
public final class ClassParser {
private static final int BUFSIZE = 8192;
private DataInputStream dataInputStream;
private final boolean fileOwned;
private final String fileName;
private final boolean isZip; // Loaded from zip file
private DataInputStream dataInputStream;
private String zipFile;
private int classNameIndex;
private int superclassNameIndex;
@@ -48,13 +49,12 @@ public final class ClassParser {
private JavaField[] fields; // class fields, i.e., its variables
private JavaMethod[] methods; // methods defined in the class
private Attribute[] attributes; // attributes defined in the class
private final boolean isZip; // Loaded from zip file
/**
* Parses class from the given stream.
*
* @param inputStream Input stream
* @param fileName File name
* @param fileName File name
*/
public ClassParser(final InputStream inputStream, final String fileName) {
this.fileName = fileName;
@@ -82,7 +82,7 @@ public final class ClassParser {
/**
* Parses class from given .class file in a ZIP-archive
*
* @param zipFile zip file name
* @param zipFile zip file name
* @param fileName file name
*/
public ClassParser(final String zipFile, final String fileName) {
@@ -98,7 +98,7 @@ public final class ClassParser {
* not include verification of the byte code as it is performed by the java interpreter).
*
* @return Class object representing the parsed class file
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
public JavaClass parse() throws IOException, ClassFormatException {
@@ -172,13 +172,13 @@ public final class ClassParser {
}
// Return the information we have gathered in a new object
return new JavaClass(classNameIndex, superclassNameIndex, fileName, major, minor, accessFlags, constantPool, interfaces, fields, methods, attributes,
isZip ? JavaClass.ZIP : JavaClass.FILE);
isZip ? JavaClass.ZIP : JavaClass.FILE);
}
/**
* Reads information about the attributes of the class.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readAttributes() throws IOException, ClassFormatException {
@@ -192,7 +192,7 @@ public final class ClassParser {
/**
* Reads information about the class and its super class.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readClassInfo() throws IOException, ClassFormatException {
@@ -213,7 +213,7 @@ public final class ClassParser {
/**
* Reads constant pool entries.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readConstantPool() throws IOException, ClassFormatException {
@@ -223,7 +223,7 @@ public final class ClassParser {
/**
* Reads information about the fields of the class, i.e., its variables.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readFields() throws IOException, ClassFormatException {
@@ -238,7 +238,7 @@ public final class ClassParser {
/**
* Checks whether the header of the file is ok. Of course, this has to be the first action on successive file reads.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readID() throws IOException, ClassFormatException {
@@ -250,7 +250,7 @@ public final class ClassParser {
/**
* Reads information about the interfaces implemented by this class.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readInterfaces() throws IOException, ClassFormatException {
@@ -264,7 +264,7 @@ public final class ClassParser {
/**
* Reads information about the methods of the class.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readMethods() throws IOException {
@@ -278,7 +278,7 @@ public final class ClassParser {
/**
* Reads major and minor version of compiler which created the file.
*
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
private void readVersion() throws IOException, ClassFormatException {

102
src/main/java/haidnor/jvm/bcel/classfile/Code.java
View File

@@ -29,7 +29,7 @@ import java.util.Arrays;
* This class represents a chunk of Java byte code contained in a method. It is instantiated by the
* <em>Attribute.readAttribute()</em> method. A <em>Code</em> attribute contains informations about operand stack, local
* variables, byte code and the exceptions handled within this method.
*
* <p>
* This attribute has attributes itself, namely <em>LineNumberTable</em> which is used for debugging purposes and
* <em>LocalVariableTable</em> which contains information about the local variables.
*
@@ -52,6 +52,7 @@ import java.util.Arrays;
* attribute_info attributes[attributes_count];
* }
* </pre>
*
* @see Attribute
* @see CodeException
* @see LineNumberTable
@@ -77,9 +78,9 @@ public final class Code extends Attribute {
}
/**
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param file Input stream
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param file Input stream
* @param constantPool Array of constants
*/
Code(final int nameIndex, final int length, final DataInput file, final ConstantPool constantPool) throws IOException {
@@ -113,17 +114,17 @@ public final class Code extends Attribute {
}
/**
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param maxStack Maximum size of stack
* @param maxLocals Number of local variables
* @param code Actual byte code
* @param nameIndex Index pointing to the name <em>Code</em>
* @param length Content length in bytes
* @param maxStack Maximum size of stack
* @param maxLocals Number of local variables
* @param code Actual byte code
* @param exceptionTable of handled exceptions
* @param attributes Attributes of code: LineNumber or LocalVariable
* @param constantPool Array of constants
* @param attributes Attributes of code: LineNumber or LocalVariable
* @param constantPool Array of constants
*/
public Code(final int nameIndex, final int length, final int maxStack, final int maxLocals, final byte[] code, final CodeException[] exceptionTable,
final Attribute[] attributes, final ConstantPool constantPool) {
final Attribute[] attributes, final ConstantPool constantPool) {
super(Const.ATTR_CODE, nameIndex, length, constantPool);
this.maxStack = Args.requireU2(maxStack, "maxStack");
this.maxLocals = Args.requireU2(maxLocals, "maxLocals");
@@ -147,7 +148,7 @@ public final class Code extends Attribute {
/**
* @return the full size of this code attribute, minus its first 6 bytes, including the size of all its contained
* attributes
* attributes
*/
private int calculateLength() {
int len = 0;
@@ -160,9 +161,8 @@ public final class Code extends Attribute {
}
/**
* @return deep copy of this attribute
*
* @param constantPool the constant pool to duplicate
* @return deep copy of this attribute
*/
@Override
public Attribute copy(final ConstantPool constantPool) {
@@ -209,6 +209,14 @@ public final class Code extends Attribute {
return attributes;
}
/**
* @param attributes the attributes to set for this Code
*/
public void setAttributes(final Attribute[] attributes) {
this.attributes = attributes != null ? attributes : EMPTY_ARRAY;
super.setLength(calculateLength()); // Adjust length
}
/**
* @return Actual byte code of the method.
*/
@@ -216,6 +224,14 @@ public final class Code extends Attribute {
return code;
}
/**
* @param code byte code
*/
public void setCode(final byte[] code) {
this.code = code != null ? code : ArrayUtils.EMPTY_BYTE_ARRAY;
super.setLength(calculateLength()); // Adjust length
}
/**
* @return Table of handled exceptions.
* @see CodeException
@@ -224,15 +240,23 @@ public final class Code extends Attribute {
return exceptionTable;
}
/**
* @param exceptionTable exception table
*/
public void setExceptionTable(final CodeException[] exceptionTable) {
this.exceptionTable = exceptionTable != null ? exceptionTable : CodeException.EMPTY_CODE_EXCEPTION_ARRAY;
super.setLength(calculateLength()); // Adjust length
}
/**
* @return the internal length of this code attribute (minus the first 6 bytes) and excluding all its attributes
*/
private int getInternalLength() {
return 2 /* maxStack */ + 2 /* maxLocals */ + 4 /* code length */
+ code.length /* byte-code */
+ 2 /* exception-table length */
+ 8 * (exceptionTable == null ? 0 : exceptionTable.length) /* exception table */
+ 2 /* attributes count */;
+ code.length /* byte-code */
+ 2 /* exception-table length */
+ 8 * (exceptionTable == null ? 0 : exceptionTable.length) /* exception table */
+ 2 /* attributes count */;
}
/**
@@ -266,37 +290,6 @@ public final class Code extends Attribute {
return maxLocals;
}
/**
* @return Maximum size of stack used by this method.
*/
public int getMaxStack() {
return maxStack;
}
/**
* @param attributes the attributes to set for this Code
*/
public void setAttributes(final Attribute[] attributes) {
this.attributes = attributes != null ? attributes : EMPTY_ARRAY;
super.setLength(calculateLength()); // Adjust length
}
/**
* @param code byte code
*/
public void setCode(final byte[] code) {
this.code = code != null ? code : ArrayUtils.EMPTY_BYTE_ARRAY;
super.setLength(calculateLength()); // Adjust length
}
/**
* @param exceptionTable exception table
*/
public void setExceptionTable(final CodeException[] exceptionTable) {
this.exceptionTable = exceptionTable != null ? exceptionTable : CodeException.EMPTY_CODE_EXCEPTION_ARRAY;
super.setLength(calculateLength()); // Adjust length
}
/**
* @param maxLocals maximum number of local variables
*/
@@ -304,6 +297,13 @@ public final class Code extends Attribute {
this.maxLocals = maxLocals;
}
/**
* @return Maximum size of stack used by this method.
*/
public int getMaxStack() {
return maxStack;
}
/**
* @param maxStack maximum stack size
*/
@@ -328,7 +328,7 @@ public final class Code extends Attribute {
public String toString(final boolean verbose) {
final StringBuilder buf = new StringBuilder(100); // CHECKSTYLE IGNORE MagicNumber
buf.append("Code(maxStack = ").append(maxStack).append(", maxLocals = ").append(maxLocals).append(", code_length = ").append(code.length).append(")\n")
.append(Utility.codeToString(code, super.getConstantPool(), 0, -1, verbose));
.append(Utility.codeToString(code, super.getConstantPool(), 0, -1, verbose));
if (exceptionTable.length > 0) {
buf.append("\nException handler(s) = \n").append("From\tTo\tHandler\tType\n");
for (final CodeException exception : exceptionTable) {

42
src/main/java/haidnor/jvm/bcel/classfile/CodeException.java
View File

@@ -154,27 +154,6 @@ public final class CodeException implements Cloneable, Node {
return catchType;
}
/**
* @return Exclusive end index of the region where the handler is active.
*/
public int getEndPC() {
return endPc;
}
/**
* @return Starting address of exception handler, relative to the code.
*/
public int getHandlerPC() {
return handlerPc;
}
/**
* @return Inclusive start index of the region where the handler is active.
*/
public int getStartPC() {
return startPc;
}
/**
* @param catchType the type of exception that is caught
*/
@@ -182,6 +161,13 @@ public final class CodeException implements Cloneable, Node {
this.catchType = catchType;
}
/**
* @return Exclusive end index of the region where the handler is active.
*/
public int getEndPC() {
return endPc;
}
/**
* @param endPc end of handled block
*/
@@ -189,6 +175,13 @@ public final class CodeException implements Cloneable, Node {
this.endPc = endPc;
}
/**
* @return Starting address of exception handler, relative to the code.
*/
public int getHandlerPC() {
return handlerPc;
}
/**
* @param handlerPc where the actual code is
*/
@@ -196,6 +189,13 @@ public final class CodeException implements Cloneable, Node {
this.handlerPc = handlerPc;
}
/**
* @return Inclusive start index of the region where the handler is active.
*/
public int getStartPC() {
return startPc;
}
/**
* @param startPc start of handled block
*/

130
src/main/java/haidnor/jvm/bcel/classfile/Constant.java
View File

@@ -45,6 +45,15 @@ public abstract class Constant implements Cloneable, Node {
return THIS.toString().hashCode();
}
};
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected byte tag; // TODO should be private & final
Constant(final byte tag) {
this.tag = tag;
}
/**
* @return Comparison strategy object
@@ -53,64 +62,6 @@ public abstract class Constant implements Cloneable, Node {
return bcelComparator;
}
/**
* Reads one constant from the given input, the type depends on a tag byte.
*
* @param dataInput Input stream
* @return Constant object
* @throws IOException if an I/O error occurs reading from the given {@code dataInput}.
* @throws ClassFormatException if the next byte is not recognized
* @since 6.0 made public
*/
public static Constant readConstant(final DataInput dataInput) throws IOException, ClassFormatException {
final byte b = dataInput.readByte(); // Read tag byte
switch (b) {
case Const.CONSTANT_Class:
return new ConstantClass(dataInput);
case Const.CONSTANT_Fieldref:
return new ConstantFieldref(dataInput);
case Const.CONSTANT_Methodref:
return new ConstantMethodref(dataInput);
case Const.CONSTANT_InterfaceMethodref:
return new ConstantInterfaceMethodref(dataInput);
case Const.CONSTANT_String:
return new ConstantString(dataInput);
case Const.CONSTANT_Integer:
return new ConstantInteger(dataInput);
case Const.CONSTANT_Float:
return new ConstantFloat(dataInput);
case Const.CONSTANT_Long:
return new ConstantLong(dataInput);
case Const.CONSTANT_Double:
return new ConstantDouble(dataInput);
case Const.CONSTANT_NameAndType:
return new ConstantNameAndType(dataInput);
case Const.CONSTANT_Utf8:
return ConstantUtf8.getInstance(dataInput);
case Const.CONSTANT_MethodHandle:
return new ConstantMethodHandle(dataInput);
case Const.CONSTANT_MethodType:
return new ConstantMethodType(dataInput);
case Const.CONSTANT_Dynamic:
return new ConstantDynamic(dataInput);
case Const.CONSTANT_InvokeDynamic:
return new ConstantInvokeDynamic(dataInput);
case Const.CONSTANT_Module:
return new ConstantModule(dataInput);
case Const.CONSTANT_Package:
return new ConstantPackage(dataInput);
default:
throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
}
}
/**
* @param comparator Comparison strategy object
*/
public static void setComparator(final BCELComparator comparator) {
bcelComparator = comparator;
}
/*
* In fact this tag is redundant since we can distinguish different 'Constant' objects by their type, i.e., via
* 'instanceof'. In some places we will use the tag for switch()es anyway.
@@ -118,14 +69,63 @@ public abstract class Constant implements Cloneable, Node {
* First, we want match the specification as closely as possible. Second we need the tag as an index to select the
* corresponding class name from the 'CONSTANT_NAMES' array.
*/
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected byte tag; // TODO should be private & final
Constant(final byte tag) {
this.tag = tag;
/**
* @param comparator Comparison strategy object
*/
public static void setComparator(final BCELComparator comparator) {
bcelComparator = comparator;
}
/**
* Reads one constant from the given input, the type depends on a tag byte.
*
* @param dataInput Input stream
* @return Constant object
* @throws IOException if an I/O error occurs reading from the given {@code dataInput}.
* @throws ClassFormatException if the next byte is not recognized
* @since 6.0 made public
*/
public static Constant readConstant(final DataInput dataInput) throws IOException, ClassFormatException {
final byte b = dataInput.readByte(); // Read tag byte
switch (b) {
case Const.CONSTANT_Class:
return new ConstantClass(dataInput);
case Const.CONSTANT_Fieldref:
return new ConstantFieldref(dataInput);
case Const.CONSTANT_Methodref:
return new ConstantMethodref(dataInput);
case Const.CONSTANT_InterfaceMethodref:
return new ConstantInterfaceMethodref(dataInput);
case Const.CONSTANT_String:
return new ConstantString(dataInput);
case Const.CONSTANT_Integer:
return new ConstantInteger(dataInput);
case Const.CONSTANT_Float:
return new ConstantFloat(dataInput);
case Const.CONSTANT_Long:
return new ConstantLong(dataInput);
case Const.CONSTANT_Double:
return new ConstantDouble(dataInput);
case Const.CONSTANT_NameAndType:
return new ConstantNameAndType(dataInput);
case Const.CONSTANT_Utf8:
return ConstantUtf8.getInstance(dataInput);
case Const.CONSTANT_MethodHandle:
return new ConstantMethodHandle(dataInput);
case Const.CONSTANT_MethodType:
return new ConstantMethodType(dataInput);
case Const.CONSTANT_Dynamic:
return new ConstantDynamic(dataInput);
case Const.CONSTANT_InvokeDynamic:
return new ConstantInvokeDynamic(dataInput);
case Const.CONSTANT_Module:
return new ConstantModule(dataInput);
case Const.CONSTANT_Package:
return new ConstantPackage(dataInput);
default:
throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
}
}
/**

22
src/main/java/haidnor/jvm/bcel/classfile/ConstantCP.java
View File

@@ -53,7 +53,7 @@ public abstract class ConstantCP extends Constant {
/**
* Initialize instance from file data.
*
* @param tag Constant type tag
* @param tag Constant type tag
* @param file Input stream
* @throws IOException if an I/O error occurs.
*/
@@ -62,7 +62,7 @@ public abstract class ConstantCP extends Constant {
}
/**
* @param classIndex Reference to the class containing the field
* @param classIndex Reference to the class containing the field
* @param nameAndTypeIndex and the field signature
*/
protected ConstantCP(final byte tag, final int classIndex, final int nameAndTypeIndex) {
@@ -107,13 +107,6 @@ public abstract class ConstantCP extends Constant {
return class_index;
}
/**
* @return Reference (index) to signature of the field.
*/
public final int getNameAndTypeIndex() {
return name_and_type_index;
}
/**
* @param classIndex points to Constant_class
*/
@@ -121,6 +114,13 @@ public abstract class ConstantCP extends Constant {
this.class_index = classIndex;
}
/**
* @return Reference (index) to signature of the field.
*/
public final int getNameAndTypeIndex() {
return name_and_type_index;
}
/**
* @param nameAndTypeIndex points to Constant_NameAndType
*/
@@ -130,8 +130,8 @@ public abstract class ConstantCP extends Constant {
/**
* @return String representation.
*
* not final as ConstantInvokeDynamic needs to modify
* <p>
* not final as ConstantInvokeDynamic needs to modify
*/
@Override
public String toString() {

14
src/main/java/haidnor/jvm/bcel/classfile/ConstantDouble.java
View File

@@ -88,6 +88,13 @@ public final class ConstantDouble extends Constant implements ConstantObject {
return bytes;
}
/**
* @param bytes the raw bytes that represent the double value
*/
public void setBytes(final double bytes) {
this.bytes = bytes;
}
/**
* @return Double object
*/
@@ -96,13 +103,6 @@ public final class ConstantDouble extends Constant implements ConstantObject {
return Double.valueOf(bytes);
}
/**
* @param bytes the raw bytes that represent the double value
*/
public void setBytes(final double bytes) {
this.bytes = bytes;
}
/**
* @return String representation.
*/

6
src/main/java/haidnor/jvm/bcel/classfile/ConstantDynamic.java
View File

@@ -27,7 +27,7 @@ import java.io.IOException;
*
* @see Constant
* @see <a href="https://bugs.openjdk.java.net/secure/attachment/74618/constant-dynamic.html"> Change request for JEP
* 309</a>
* 309</a>
* @since 6.3
*/
public final class ConstantDynamic extends ConstantCP {
@@ -68,8 +68,8 @@ public final class ConstantDynamic extends ConstantCP {
/**
* @return Reference (index) to bootstrap method this constant refers to.
*
* Note that this method is a functional duplicate of getClassIndex for use by ConstantInvokeDynamic.
* <p>
* Note that this method is a functional duplicate of getClassIndex for use by ConstantInvokeDynamic.
* @since 6.0
*/
public int getBootstrapMethodAttrIndex() {

2
src/main/java/haidnor/jvm/bcel/classfile/ConstantFieldref.java
View File

@@ -46,7 +46,7 @@ public final class ConstantFieldref extends ConstantCP {
}
/**
* @param classIndex Reference to the class containing the Field
* @param classIndex Reference to the class containing the Field
* @param nameAndTypeIndex and the Field signature
*/
public ConstantFieldref(final int classIndex, final int nameAndTypeIndex) {

14
src/main/java/haidnor/jvm/bcel/classfile/ConstantFloat.java
View File

@@ -89,6 +89,13 @@ public final class ConstantFloat extends Constant implements ConstantObject {
return bytes;
}
/**
* @param bytes the raw bytes that represent this float
*/
public void setBytes(final float bytes) {
this.bytes = bytes;
}
/**
* @return Float object
*/
@@ -97,13 +104,6 @@ public final class ConstantFloat extends Constant implements ConstantObject {
return Float.valueOf(bytes);
}
/**
* @param bytes the raw bytes that represent this float
*/
public void setBytes(final float bytes) {
this.bytes = bytes;
}
/**
* @return String representation.
*/

14
src/main/java/haidnor/jvm/bcel/classfile/ConstantInteger.java
View File

@@ -88,6 +88,13 @@ public final class ConstantInteger extends Constant implements ConstantObject {
return bytes;
}
/**
* @param bytes the raw bytes that represent this integer
*/
public void setBytes(final int bytes) {
this.bytes = bytes;
}
/**
* @return Integer object
*/
@@ -96,13 +103,6 @@ public final class ConstantInteger extends Constant implements ConstantObject {
return Integer.valueOf(bytes);
}
/**
* @param bytes the raw bytes that represent this integer
*/
public void setBytes(final int bytes) {
this.bytes = bytes;
}
/**
* @return String representation.
*/

2
src/main/java/haidnor/jvm/bcel/classfile/ConstantInterfaceMethodref.java
View File

@@ -46,7 +46,7 @@ public final class ConstantInterfaceMethodref extends ConstantCP {
}
/**
* @param classIndex Reference to the class containing the method
* @param classIndex Reference to the class containing the method
* @param nameAndTypeIndex and the method signature
*/
public ConstantInterfaceMethodref(final int classIndex, final int nameAndTypeIndex) {

6
src/main/java/haidnor/jvm/bcel/classfile/ConstantInvokeDynamic.java
View File

@@ -26,7 +26,7 @@ import java.io.IOException;
*
* @see Constant
* @see <a href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.10"> The
* CONSTANT_InvokeDynamic_info Structure in The Java Virtual Machine Specification</a>
* CONSTANT_InvokeDynamic_info Structure in The Java Virtual Machine Specification</a>
* @since 6.0
*/
public final class ConstantInvokeDynamic extends ConstantCP {
@@ -67,8 +67,8 @@ public final class ConstantInvokeDynamic extends ConstantCP {
/**
* @return Reference (index) to bootstrap method this constant refers to.
*
* Note that this method is a functional duplicate of getClassIndex for use by ConstantInvokeDynamic.
* <p>
* Note that this method is a functional duplicate of getClassIndex for use by ConstantInvokeDynamic.
* @since 6.0
*/
public int getBootstrapMethodAttrIndex() {

14
src/main/java/haidnor/jvm/bcel/classfile/ConstantLong.java
View File

@@ -88,6 +88,13 @@ public final class ConstantLong extends Constant implements ConstantObject {
return bytes;
}
/**
* @param bytes the raw bytes that represent this long
*/
public void setBytes(final long bytes) {
this.bytes = bytes;
}
/**
* @return Long object
*/
@@ -96,13 +103,6 @@ public final class ConstantLong extends Constant implements ConstantObject {
return Long.valueOf(bytes);
}
/**
* @param bytes the raw bytes that represent this long
*/
public void setBytes(final long bytes) {
this.bytes = bytes;
}
/**
* @return String representation.
*/

8
src/main/java/haidnor/jvm/bcel/classfile/ConstantMethodHandle.java
View File

@@ -86,14 +86,14 @@ public final class ConstantMethodHandle extends Constant {
return referenceIndex;
}
public int getReferenceKind() {
return referenceKind;
}
public void setReferenceIndex(final int referenceIndex) {
this.referenceIndex = referenceIndex;
}
public int getReferenceKind() {
return referenceKind;
}
public void setReferenceKind(final int referenceKind) {
this.referenceKind = referenceKind;
}

2
src/main/java/haidnor/jvm/bcel/classfile/ConstantMethodref.java
View File

@@ -46,7 +46,7 @@ public final class ConstantMethodref extends ConstantCP {
}
/**
* @param classIndex Reference to the class containing the method
* @param classIndex Reference to the class containing the method
* @param nameAndTypeIndex and the method signature
*/
public ConstantMethodref(final int classIndex, final int nameAndTypeIndex) {

16
src/main/java/haidnor/jvm/bcel/classfile/ConstantNameAndType.java
View File

@@ -53,7 +53,7 @@ public final class ConstantNameAndType extends Constant {
}
/**
* @param nameIndex Name of field/method
* @param nameIndex Name of field/method
* @param signatureIndex and its signature
*/
public ConstantNameAndType(final int nameIndex, final int signatureIndex) {
@@ -100,6 +100,13 @@ public final class ConstantNameAndType extends Constant {
return nameIndex;
}
/**
* @param nameIndex the name index of this constant
*/
public void setNameIndex(final int nameIndex) {
this.nameIndex = nameIndex;
}
/**
* @return signature
*/
@@ -114,13 +121,6 @@ public final class ConstantNameAndType extends Constant {
return signatureIndex;
}
/**
* @param nameIndex the name index of this constant
*/
public void setNameIndex(final int nameIndex) {
this.nameIndex = nameIndex;
}
/**
* @param signatureIndex the signature index in the constant pool of this type
*/

416
src/main/java/haidnor/jvm/bcel/classfile/ConstantPool.java
View File

File diff suppressed because it is too large Load Diff

123
src/main/java/haidnor/jvm/bcel/classfile/ConstantUtf8.java
View File

@@ -57,47 +57,53 @@ import java.util.Objects;
*/
public final class ConstantUtf8 extends Constant {
private static class Cache {
private static final boolean BCEL_STATISTICS = Boolean.getBoolean(SYS_PROP_STATISTICS);
private static final int MAX_ENTRIES = Integer.getInteger(SYS_PROP_CACHE_MAX_ENTRIES, 0).intValue();
private static final int INITIAL_CAPACITY = (int) (MAX_ENTRIES / 0.75);
private static final HashMap<String, ConstantUtf8> CACHE = new LinkedHashMap<String, ConstantUtf8>(INITIAL_CAPACITY, 0.75f, true) {
private static final long serialVersionUID = -8506975356158971766L;
@Override
protected boolean removeEldestEntry(final Map.Entry<String, ConstantUtf8> eldest) {
return size() > MAX_ENTRIES;
}
};
// Set the size to 0 or below to skip caching entirely
private static final int MAX_ENTRY_SIZE = Integer.getInteger(SYS_PROP_CACHE_MAX_ENTRY_SIZE, 200).intValue();
static boolean isEnabled() {
return Cache.MAX_ENTRIES > 0 && MAX_ENTRY_SIZE > 0;
}
}
private static final String SYS_PROP_CACHE_MAX_ENTRIES = "bcel.maxcached";
private static final String SYS_PROP_CACHE_MAX_ENTRY_SIZE = "bcel.maxcached.size";
private static final String SYS_PROP_STATISTICS = "bcel.statistics";
// TODO these should perhaps be AtomicInt?
private static volatile int considered;
private static volatile int created;
private static volatile int hits;
private static volatile int skipped;
private static final String SYS_PROP_CACHE_MAX_ENTRIES = "bcel.maxcached";
private static final String SYS_PROP_CACHE_MAX_ENTRY_SIZE = "bcel.maxcached.size";
private static final String SYS_PROP_STATISTICS = "bcel.statistics";
static {
if (Cache.BCEL_STATISTICS) {
Runtime.getRuntime().addShutdownHook(new Thread(ConstantUtf8::printStats));
}
}
private final String value;
/**
* Initializes from another object.
*
* @param constantUtf8 the value.
*/
public ConstantUtf8(final ConstantUtf8 constantUtf8) {
this(constantUtf8.getBytes());
}
/**
* Initializes instance from file data.
*
* @param dataInput Input stream
* @throws IOException if an I/O error occurs.
*/
ConstantUtf8(final DataInput dataInput) throws IOException {
super(Const.CONSTANT_Utf8);
value = dataInput.readUTF();
created++;
}
/**
* @param value Data
*/
public ConstantUtf8(final String value) {
super(Const.CONSTANT_Utf8);
this.value = Objects.requireNonNull(value, "value");
created++;
}
/**
* Clears the cache.
*
@@ -175,39 +181,7 @@ public final class ConstantUtf8 extends Constant {
System.err.printf("%s Cache hit %,d/%,d, %d skipped.%n", prefix, hits, considered, skipped);
System.err.printf("%s Total of %,d ConstantUtf8 objects created.%n", prefix, created);
System.err.printf("%s Configuration: %s=%,d, %s=%,d.%n", prefix, SYS_PROP_CACHE_MAX_ENTRIES, Cache.MAX_ENTRIES, SYS_PROP_CACHE_MAX_ENTRY_SIZE,
Cache.MAX_ENTRY_SIZE);
}
private final String value;
/**
* Initializes from another object.
*
* @param constantUtf8 the value.
*/
public ConstantUtf8(final ConstantUtf8 constantUtf8) {
this(constantUtf8.getBytes());
}
/**
* Initializes instance from file data.
*
* @param dataInput Input stream
* @throws IOException if an I/O error occurs.
*/
ConstantUtf8(final DataInput dataInput) throws IOException {
super(Const.CONSTANT_Utf8);
value = dataInput.readUTF();
created++;
}
/**
* @param value Data
*/
public ConstantUtf8(final String value) {
super(Const.CONSTANT_Utf8);
this.value = Objects.requireNonNull(value, "value");
created++;
Cache.MAX_ENTRY_SIZE);
}
/**
@@ -256,4 +230,29 @@ public final class ConstantUtf8 extends Constant {
public String toString() {
return super.toString() + "(\"" + Utility.replace(value, "\n", "\\n") + "\")";
}
private static class Cache {
private static final boolean BCEL_STATISTICS = Boolean.getBoolean(SYS_PROP_STATISTICS);
private static final int MAX_ENTRIES = Integer.getInteger(SYS_PROP_CACHE_MAX_ENTRIES, 0).intValue();
private static final int INITIAL_CAPACITY = (int) (MAX_ENTRIES / 0.75);
private static final HashMap<String, ConstantUtf8> CACHE = new LinkedHashMap<String, ConstantUtf8>(INITIAL_CAPACITY, 0.75f, true) {
private static final long serialVersionUID = -8506975356158971766L;
@Override
protected boolean removeEldestEntry(final Map.Entry<String, ConstantUtf8> eldest) {
return size() > MAX_ENTRIES;
}
};
// Set the size to 0 or below to skip caching entirely
private static final int MAX_ENTRY_SIZE = Integer.getInteger(SYS_PROP_CACHE_MAX_ENTRY_SIZE, 200).intValue();
static boolean isEnabled() {
return Cache.MAX_ENTRIES > 0 && MAX_ENTRY_SIZE > 0;
}
}
}

51
src/main/java/haidnor/jvm/bcel/classfile/ConstantValue.java
View File

@@ -34,6 +34,7 @@ import java.io.IOException;
* u2 constantvalue_index;
* }
* </pre>
*
* @see Attribute
*/
public final class ConstantValue extends Attribute {
@@ -53,9 +54,9 @@ public final class ConstantValue extends Attribute {
/**
* Construct object from input stream.
*
* @param nameIndex Name index in constant pool
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Name index in constant pool
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
* @throws IOException if an I/O error occurs.
*/
@@ -64,10 +65,10 @@ public final class ConstantValue extends Attribute {
}
/**
* @param nameIndex Name index in constant pool
* @param length Content length in bytes
* @param nameIndex Name index in constant pool
* @param length Content length in bytes
* @param constantValueIndex Index in constant pool
* @param constantPool Array of constants
* @param constantPool Array of constants
*/
public ConstantValue(final int nameIndex, final int length, final int constantValueIndex, final ConstantPool constantPool) {
super(Const.ATTR_CONSTANT_VALUE, nameIndex, Args.require(length, 2, "ConstantValue attribute length"), constantPool);
@@ -131,25 +132,25 @@ public final class ConstantValue extends Attribute {
int i;
// Print constant to string depending on its type
switch (c.getTag()) {
case Const.CONSTANT_Long:
buf = String.valueOf(((ConstantLong) c).getBytes());
break;
case Const.CONSTANT_Float:
buf = String.valueOf(((ConstantFloat) c).getBytes());
break;
case Const.CONSTANT_Double:
buf = String.valueOf(((ConstantDouble) c).getBytes());
break;
case Const.CONSTANT_Integer:
buf = String.valueOf(((ConstantInteger) c).getBytes());
break;
case Const.CONSTANT_String:
i = ((ConstantString) c).getStringIndex();
c = super.getConstantPool().getConstantUtf8(i);
buf = "\"" + Utility.convertString(((ConstantUtf8) c).getBytes()) + "\"";
break;
default:
throw new IllegalStateException("Type of ConstValue invalid: " + c);
case Const.CONSTANT_Long:
buf = String.valueOf(((ConstantLong) c).getBytes());
break;
case Const.CONSTANT_Float:
buf = String.valueOf(((ConstantFloat) c).getBytes());
break;
case Const.CONSTANT_Double:
buf = String.valueOf(((ConstantDouble) c).getBytes());
break;
case Const.CONSTANT_Integer:
buf = String.valueOf(((ConstantInteger) c).getBytes());
break;
case Const.CONSTANT_String:
i = ((ConstantString) c).getStringIndex();
c = super.getConstantPool().getConstantUtf8(i);
buf = "\"" + Utility.convertString(((ConstantUtf8) c).getBytes()) + "\"";
break;
default:
throw new IllegalStateException("Type of ConstValue invalid: " + c);
}
return buf;
}

12
src/main/java/haidnor/jvm/bcel/classfile/Deprecated.java
View File

@@ -44,9 +44,9 @@ public final class Deprecated extends Attribute {
}
/**
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param bytes Attribute contents
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param bytes Attribute contents
* @param constantPool Array of constants
*/
public Deprecated(final int nameIndex, final int length, final byte[] bytes, final ConstantPool constantPool) {
@@ -57,9 +57,9 @@ public final class Deprecated extends Attribute {
/**
* Construct object from input stream.
*
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
* @throws IOException if an I/O error occurs.
*/

62
src/main/java/haidnor/jvm/bcel/classfile/DescendingVisitor.java
View File

@@ -32,7 +32,7 @@ public class DescendingVisitor implements Visitor {
private final Stack<Object> stack = new Stack<>();
/**
* @param clazz Class to traverse
* @param clazz Class to traverse
* @param visitor visitor object to apply to all components
*/
public DescendingVisitor(final JavaClass clazz, final Visitor visitor) {
@@ -153,7 +153,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.3 */
/**
* @since 6.3
*/
@Override
public void visitConstantDynamic(final ConstantDynamic obj) {
stack.push(obj);
@@ -206,7 +208,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.0 */
/**
* @since 6.0
*/
@Override
public void visitConstantMethodHandle(final ConstantMethodHandle obj) {
stack.push(obj);
@@ -221,7 +225,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.0 */
/**
* @since 6.0
*/
@Override
public void visitConstantMethodType(final ConstantMethodType obj) {
stack.push(obj);
@@ -229,7 +235,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.1 */
/**
* @since 6.1
*/
@Override
public void visitConstantModule(final ConstantModule obj) {
stack.push(obj);
@@ -244,7 +252,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.1 */
/**
* @since 6.1
*/
@Override
public void visitConstantPackage(final ConstantPackage obj) {
stack.push(obj);
@@ -408,7 +418,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModule(final Module obj) {
stack.push(obj);
@@ -420,7 +432,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleExports(final ModuleExports obj) {
stack.push(obj);
@@ -428,7 +442,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleMainClass(final ModuleMainClass obj) {
stack.push(obj);
@@ -436,7 +452,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleOpens(final ModuleOpens obj) {
stack.push(obj);
@@ -444,7 +462,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModulePackages(final ModulePackages obj) {
stack.push(obj);
@@ -452,7 +472,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleProvides(final ModuleProvides obj) {
stack.push(obj);
@@ -460,7 +482,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleRequires(final ModuleRequires obj) {
stack.push(obj);
@@ -468,7 +492,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitNestHost(final NestHost obj) {
stack.push(obj);
@@ -476,7 +502,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitNestMembers(final NestMembers obj) {
stack.push(obj);
@@ -494,7 +522,9 @@ public class DescendingVisitor implements Visitor {
stack.pop();
}
/** @since 6.0 */
/**
* @since 6.0
*/
@Override
public void visitParameterAnnotationEntry(final ParameterAnnotationEntry obj) {
stack.push(obj);

144
src/main/java/haidnor/jvm/bcel/classfile/ElementValue.java
View File

@@ -44,8 +44,9 @@ import java.io.IOException;
* element_value values[num_values];
* } array_value;
* } value;
*}
*</pre>
* }
* </pre>
*
* @since 6.0
*/
public abstract class ElementValue {
@@ -63,72 +64,6 @@ public abstract class ElementValue {
public static final byte PRIMITIVE_LONG = 'J';
public static final byte PRIMITIVE_SHORT = 'S';
public static final byte PRIMITIVE_BOOLEAN = 'Z';
/**
* Reads an {@code element_value} as an {@code ElementValue}.
*
* @param input Raw data input.
* @param cpool Constant pool.
* @return a new ElementValue.
* @throws IOException if an I/O error occurs.
*/
public static ElementValue readElementValue(final DataInput input, final ConstantPool cpool) throws IOException {
return readElementValue(input, cpool, 0);
}
/**
* Reads an {@code element_value} as an {@code ElementValue}.
*
* @param input Raw data input.
* @param cpool Constant pool.
* @param arrayNesting level of current array nesting.
* @return a new ElementValue.
* @throws IOException if an I/O error occurs.
* @since 6.7.0
*/
public static ElementValue readElementValue(final DataInput input, final ConstantPool cpool, int arrayNesting)
throws IOException {
final byte tag = input.readByte();
switch (tag) {
case PRIMITIVE_BYTE:
case PRIMITIVE_CHAR:
case PRIMITIVE_DOUBLE:
case PRIMITIVE_FLOAT:
case PRIMITIVE_INT:
case PRIMITIVE_LONG:
case PRIMITIVE_SHORT:
case PRIMITIVE_BOOLEAN:
case STRING:
return new SimpleElementValue(tag, input.readUnsignedShort(), cpool);
case ENUM_CONSTANT:
return new EnumElementValue(ENUM_CONSTANT, input.readUnsignedShort(), input.readUnsignedShort(), cpool);
case CLASS:
return new ClassElementValue(CLASS, input.readUnsignedShort(), cpool);
case ANNOTATION:
// TODO isRuntimeVisible
return new AnnotationElementValue(ANNOTATION, AnnotationEntry.read(input, cpool, false), cpool);
case ARRAY:
arrayNesting++;
if (arrayNesting > Const.MAX_ARRAY_DIMENSIONS) {
// JVM spec 4.4.1
throw new ClassFormatException(String.format("Arrays are only valid if they represent %,d or fewer dimensions.", Const.MAX_ARRAY_DIMENSIONS));
}
final int numArrayVals = input.readUnsignedShort();
final ElementValue[] evalues = new ElementValue[numArrayVals];
for (int j = 0; j < numArrayVals; j++) {
evalues[j] = ElementValue.readElementValue(input, cpool, arrayNesting);
}
return new ArrayElementValue(ARRAY, evalues, cpool);
default:
throw new ClassFormatException("Unexpected element value tag in annotation: " + tag);
}
}
/**
* @deprecated (since 6.0) will be made private and final; do not access directly, use getter
*/
@@ -145,9 +80,76 @@ public abstract class ElementValue {
this.cpool = cpool;
}
/**
* Reads an {@code element_value} as an {@code ElementValue}.
*
* @param input Raw data input.
* @param cpool Constant pool.
* @return a new ElementValue.
* @throws IOException if an I/O error occurs.
*/
public static ElementValue readElementValue(final DataInput input, final ConstantPool cpool) throws IOException {
return readElementValue(input, cpool, 0);
}
/**
* Reads an {@code element_value} as an {@code ElementValue}.
*
* @param input Raw data input.
* @param cpool Constant pool.
* @param arrayNesting level of current array nesting.
* @return a new ElementValue.
* @throws IOException if an I/O error occurs.
* @since 6.7.0
*/
public static ElementValue readElementValue(final DataInput input, final ConstantPool cpool, int arrayNesting)
throws IOException {
final byte tag = input.readByte();
switch (tag) {
case PRIMITIVE_BYTE:
case PRIMITIVE_CHAR:
case PRIMITIVE_DOUBLE:
case PRIMITIVE_FLOAT:
case PRIMITIVE_INT:
case PRIMITIVE_LONG:
case PRIMITIVE_SHORT:
case PRIMITIVE_BOOLEAN:
case STRING:
return new SimpleElementValue(tag, input.readUnsignedShort(), cpool);
case ENUM_CONSTANT:
return new EnumElementValue(ENUM_CONSTANT, input.readUnsignedShort(), input.readUnsignedShort(), cpool);
case CLASS:
return new ClassElementValue(CLASS, input.readUnsignedShort(), cpool);
case ANNOTATION:
// TODO isRuntimeVisible
return new AnnotationElementValue(ANNOTATION, AnnotationEntry.read(input, cpool, false), cpool);
case ARRAY:
arrayNesting++;
if (arrayNesting > Const.MAX_ARRAY_DIMENSIONS) {
// JVM spec 4.4.1
throw new ClassFormatException(String.format("Arrays are only valid if they represent %,d or fewer dimensions.", Const.MAX_ARRAY_DIMENSIONS));
}
final int numArrayVals = input.readUnsignedShort();
final ElementValue[] evalues = new ElementValue[numArrayVals];
for (int j = 0; j < numArrayVals; j++) {
evalues[j] = ElementValue.readElementValue(input, cpool, arrayNesting);
}
return new ArrayElementValue(ARRAY, evalues, cpool);
default:
throw new ClassFormatException("Unexpected element value tag in annotation: " + tag);
}
}
public abstract void dump(DataOutputStream dos) throws IOException;
/** @since 6.0 */
/**
* @since 6.0
*/
final ConstantPool getConstantPool() {
return cpool;
}
@@ -156,7 +158,9 @@ public abstract class ElementValue {
return type;
}
/** @since 6.0 */
/**
* @since 6.0
*/
final int getType() {
return type;
}

36
src/main/java/haidnor/jvm/bcel/classfile/EmptyVisitor.java
View File

@@ -235,47 +235,65 @@ public class EmptyVisitor implements Visitor {
public void visitMethodParameters(final MethodParameters obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModule(final Module obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleExports(final ModuleExports obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleMainClass(final ModuleMainClass obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleOpens(final ModuleOpens obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModulePackages(final ModulePackages obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleProvides(final ModuleProvides obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitModuleRequires(final ModuleRequires obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitNestHost(final NestHost obj) {
}
/** @since 6.4.0 */
/**
* @since 6.4.0
*/
@Override
public void visitNestMembers(final NestMembers obj) {
}

36
src/main/java/haidnor/jvm/bcel/classfile/EnclosingMethod.java
View File

@@ -1,18 +1,18 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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 haidnor.jvm.bcel.classfile;
@@ -81,6 +81,10 @@ public class EnclosingMethod extends Attribute {
return classIndex;
}
public final void setEnclosingClassIndex(final int idx) {
classIndex = idx;
}
public final ConstantNameAndType getEnclosingMethod() {
if (methodIndex == 0) {
return null;
@@ -92,10 +96,6 @@ public class EnclosingMethod extends Attribute {
return methodIndex;
}
public final void setEnclosingClassIndex(final int idx) {
classIndex = idx;
}
public final void setEnclosingMethodIndex(final int idx) {
methodIndex = idx;
}

29
src/main/java/haidnor/jvm/bcel/classfile/ExceptionTable.java
View File

@@ -40,6 +40,7 @@ import java.util.Arrays;
* u2 exception_index_table[number_of_exceptions];
* }
* </pre>
*
* @see Code
*/
public final class ExceptionTable extends Attribute {
@@ -59,9 +60,9 @@ public final class ExceptionTable extends Attribute {
/**
* Construct object from input stream.
*
* @param nameIndex Index in constant pool
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Index in constant pool
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
* @throws IOException if an I/O error occurs.
*/
@@ -75,10 +76,10 @@ public final class ExceptionTable extends Attribute {
}
/**
* @param nameIndex Index in constant pool
* @param length Content length in bytes
* @param nameIndex Index in constant pool
* @param length Content length in bytes
* @param exceptionIndexTable Table of indices in constant pool
* @param constantPool Array of constants
* @param constantPool Array of constants
*/
public ExceptionTable(final int nameIndex, final int length, final int[] exceptionIndexTable, final ConstantPool constantPool) {
super(Const.ATTR_EXCEPTIONS, nameIndex, length, constantPool);
@@ -132,6 +133,14 @@ public final class ExceptionTable extends Attribute {
return exceptionIndexTable;
}
/**
* @param exceptionIndexTable the list of exception indexes Also redefines number_of_exceptions according to table
* length.
*/
public void setExceptionIndexTable(final int[] exceptionIndexTable) {
this.exceptionIndexTable = exceptionIndexTable != null ? exceptionIndexTable : ArrayUtils.EMPTY_INT_ARRAY;
}
/**
* @return class names of thrown exceptions
*/
@@ -148,14 +157,6 @@ public final class ExceptionTable extends Attribute {
return exceptionIndexTable == null ? 0 : exceptionIndexTable.length;
}
/**
* @param exceptionIndexTable the list of exception indexes Also redefines number_of_exceptions according to table
* length.
*/
public void setExceptionIndexTable(final int[] exceptionIndexTable) {
this.exceptionIndexTable = exceptionIndexTable != null ? exceptionIndexTable : ArrayUtils.EMPTY_INT_ARRAY;
}
/**
* @return String representation, i.e., a list of thrown exceptions.
*/

61
src/main/java/haidnor/jvm/bcel/classfile/FieldOrMethod.java
View File

@@ -50,16 +50,13 @@ public abstract class FieldOrMethod extends AccessFlags implements Cloneable, No
*/
@java.lang.Deprecated
protected int attributes_count; // No. of attributes
// @since 6.0
private AnnotationEntry[] annotationEntries; // annotations defined on the field or method
/**
* @deprecated (since 6.0) will be made private; do not access directly, use getter/setter
*/
@java.lang.Deprecated
protected ConstantPool constant_pool;
// @since 6.0
private AnnotationEntry[] annotationEntries; // annotations defined on the field or method
private String signatureAttributeString;
private boolean searchedForSignatureAttribute;
@@ -105,14 +102,14 @@ public abstract class FieldOrMethod extends AccessFlags implements Cloneable, No
}
/**
* @param accessFlags Access rights of method
* @param nameIndex Points to field name in constant pool
* @param accessFlags Access rights of method
* @param nameIndex Points to field name in constant pool
* @param signatureIndex Points to encoded signature
* @param attributes Collection of attributes
* @param constantPool Array of constants
* @param attributes Collection of attributes
* @param constantPool Array of constants
*/
protected FieldOrMethod(final int accessFlags, final int nameIndex, final int signatureIndex, final Attribute[] attributes,
final ConstantPool constantPool) {
final ConstantPool constantPool) {
super(accessFlags);
this.name_index = nameIndex;
this.signature_index = signatureIndex;
@@ -173,6 +170,14 @@ public abstract class FieldOrMethod extends AccessFlags implements Cloneable, No
return attributes;
}
/**
* @param attributes Collection of object attributes.
*/
public final void setAttributes(final Attribute[] attributes) {
this.attributes = attributes;
this.attributes_count = attributes != null ? attributes.length : 0; // init deprecated field
}
/**
* @return Constant pool used by this object.
*/
@@ -180,6 +185,13 @@ public abstract class FieldOrMethod extends AccessFlags implements Cloneable, No
return constant_pool;
}
/**
* @param constantPool Constant pool to be used for this object.
*/
public final void setConstantPool(final ConstantPool constantPool) {
this.constant_pool = constantPool;
}
/**
* Hunts for a signature attribute on the member and returns its contents. So where the 'regular' signature may be
* (Ljava/util/Vector;)V the signature attribute may in fact say 'Ljava/lang/Vector&lt;Ljava/lang/String&gt;;' Coded for
@@ -215,6 +227,13 @@ public abstract class FieldOrMethod extends AccessFlags implements Cloneable, No
return name_index;
}
/**
* @param nameIndex Index in constant pool of object's name.
*/
public final void setNameIndex(final int nameIndex) {
this.name_index = nameIndex;
}
/**
* @return String representation of object's type signature (java style)
*/
@@ -229,28 +248,6 @@ public abstract class FieldOrMethod extends AccessFlags implements Cloneable, No
return signature_index;
}
/**
* @param attributes Collection of object attributes.
*/
public final void setAttributes(final Attribute[] attributes) {
this.attributes = attributes;
this.attributes_count = attributes != null ? attributes.length : 0; // init deprecated field
}
/**
* @param constantPool Constant pool to be used for this object.
*/
public final void setConstantPool(final ConstantPool constantPool) {
this.constant_pool = constantPool;
}
/**
* @param nameIndex Index in constant pool of object's name.
*/
public final void setNameIndex(final int nameIndex) {
this.name_index = nameIndex;
}
/**
* @param signatureIndex Index in constant pool of field signature.
*/

48
src/main/java/haidnor/jvm/bcel/classfile/InnerClass.java
View File

@@ -55,9 +55,9 @@ public final class InnerClass implements Cloneable, Node {
}
/**
* @param innerClassIndex Class index in constant pool of inner class
* @param outerClassIndex Class index in constant pool of outer class
* @param innerNameIndex Name index in constant pool of inner class
* @param innerClassIndex Class index in constant pool of inner class
* @param outerClassIndex Class index in constant pool of outer class
* @param innerNameIndex Name index in constant pool of inner class
* @param innerAccessFlags Access flags of inner class
*/
public InnerClass(final int innerClassIndex, final int outerClassIndex, final int innerNameIndex, final int innerAccessFlags) {
@@ -110,27 +110,6 @@ public final class InnerClass implements Cloneable, Node {
return innerAccessFlags;
}
/**
* @return class index of inner class.
*/
public int getInnerClassIndex() {
return innerClassIndex;
}
/**
* @return name index of inner class.
*/
public int getInnerNameIndex() {
return innerNameIndex;
}
/**
* @return class index of outer class.
*/
public int getOuterClassIndex() {
return outerClassIndex;
}
/**
* @param innerAccessFlags access flags for this inner class
*/
@@ -138,6 +117,13 @@ public final class InnerClass implements Cloneable, Node {
this.innerAccessFlags = innerAccessFlags;
}
/**
* @return class index of inner class.
*/
public int getInnerClassIndex() {
return innerClassIndex;
}
/**
* @param innerClassIndex index into the constant pool for this class
*/
@@ -145,6 +131,13 @@ public final class InnerClass implements Cloneable, Node {
this.innerClassIndex = innerClassIndex;
}
/**
* @return name index of inner class.
*/
public int getInnerNameIndex() {
return innerNameIndex;
}
/**
* @param innerNameIndex index into the constant pool for this class's name
*/
@@ -152,6 +145,13 @@ public final class InnerClass implements Cloneable, Node {
this.innerNameIndex = innerNameIndex;
}
/**
* @return class index of outer class.
*/
public int getOuterClassIndex() {
return outerClassIndex;
}
/**
* @param outerClassIndex index into the constant pool for the owning class
*/

20
src/main/java/haidnor/jvm/bcel/classfile/InnerClasses.java
View File

@@ -54,9 +54,9 @@ public final class InnerClasses extends Attribute implements Iterable<InnerClass
/**
* Construct object from input stream.
*
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
* @throws IOException if an I/O error occurs.
*/
@@ -70,8 +70,8 @@ public final class InnerClasses extends Attribute implements Iterable<InnerClass
}
/**
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param nameIndex Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param innerClasses array of inner classes attributes
* @param constantPool Array of constants
*/
@@ -127,11 +127,6 @@ public final class InnerClasses extends Attribute implements Iterable<InnerClass
return innerClasses;
}
@Override
public Iterator<InnerClass> iterator() {
return Stream.of(innerClasses).iterator();
}
/**
* @param innerClasses the array of inner classes
*/
@@ -139,6 +134,11 @@ public final class InnerClasses extends Attribute implements Iterable<InnerClass
this.innerClasses = innerClasses != null ? innerClasses : EMPTY_INNER_CLASSE_ARRAY;
}
@Override
public Iterator<InnerClass> iterator() {
return Stream.of(innerClasses).iterator();
}
/**
* @return String representation.
*/

369
src/main/java/haidnor/jvm/bcel/classfile/JavaClass.java
View File

File diff suppressed because it is too large Load Diff

64
src/main/java/haidnor/jvm/bcel/classfile/JavaField.java
View File

@@ -28,7 +28,7 @@ import java.util.Objects;
* This class represents the field info structure, i.e., the representation for a variable in the class. See JVM
* specification for details.
*/
public final class JavaField extends FieldOrMethod {
public class JavaField extends FieldOrMethod {
/**
* Empty array constant.
@@ -36,7 +36,10 @@ public final class JavaField extends FieldOrMethod {
* @since 6.6.0
*/
public static final JavaField[] EMPTY_ARRAY = {};
/**
* Empty array.
*/
static final JavaField[] EMPTY_FIELD_ARRAY = {};
private static BCELComparator bcelComparator = new BCELComparator() {
@Override
@@ -52,25 +55,14 @@ public final class JavaField extends FieldOrMethod {
return THIS.getSignature().hashCode() ^ THIS.getName().hashCode();
}
};
/**
* Empty array.
* 值类型
*/
static final JavaField[] EMPTY_FIELD_ARRAY = {};
private int valueType;
/**
* @return Comparison strategy object
* 值
*/
public static BCELComparator getComparator() {
return bcelComparator;
}
/**
* @param comparator Comparison strategy object
*/
public static void setComparator(final BCELComparator comparator) {
bcelComparator = comparator;
}
private Object value;
/**
* Construct object from file stream.
@@ -92,16 +84,30 @@ public final class JavaField extends FieldOrMethod {
}
/**
* @param accessFlags Access rights of field
* @param nameIndex Points to field name in constant pool
* @param accessFlags Access rights of field
* @param nameIndex Points to field name in constant pool
* @param signatureIndex Points to encoded signature
* @param attributes Collection of attributes
* @param constantPool Array of constants
* @param attributes Collection of attributes
* @param constantPool Array of constants
*/
public JavaField(final int accessFlags, final int nameIndex, final int signatureIndex, final Attribute[] attributes, final ConstantPool constantPool) {
super(accessFlags, nameIndex, signatureIndex, attributes, constantPool);
}
/**
* @return Comparison strategy object
*/
public static BCELComparator getComparator() {
return bcelComparator;
}
/**
* @param comparator Comparison strategy object
*/
public static void setComparator(final BCELComparator comparator) {
bcelComparator = comparator;
}
/**
* Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
* I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
@@ -150,6 +156,22 @@ public final class JavaField extends FieldOrMethod {
return Type.getReturnType(getSignature());
}
public int getValueType() {
return valueType;
}
public void setValueType(int valueType) {
this.valueType = valueType;
}
public Object getValue() {
return value;
}
public void setValue(Object value) {
this.value = value;
}
/**
* Return value as defined by given BCELComparator strategy. By default return the hashcode of the field's name XOR
* signature.

53
src/main/java/haidnor/jvm/bcel/classfile/JavaMethod.java
View File

@@ -27,7 +27,7 @@ import java.util.Objects;
* This class represents the method info structure, i.e., the representation for a method in the class. See JVM
* specification for details. A method has access flags, a name, a signature and a number of attributes.
*/
public final class JavaMethod extends FieldOrMethod {
public class JavaMethod extends FieldOrMethod {
/**
* Empty array constant.
@@ -35,7 +35,10 @@ public final class JavaMethod extends FieldOrMethod {
* @since 6.6.0
*/
public static final JavaMethod[] EMPTY_ARRAY = {};
/**
* Empty array.
*/
static final JavaMethod[] EMPTY_METHOD_ARRAY = {};
private static BCELComparator bcelComparator = new BCELComparator() {
@Override
@@ -51,26 +54,6 @@ public final class JavaMethod extends FieldOrMethod {
return THIS.getSignature().hashCode() ^ THIS.getName().hashCode();
}
};
/**
* Empty array.
*/
static final JavaMethod[] EMPTY_METHOD_ARRAY = {};
/**
* @return Comparison strategy object
*/
public static BCELComparator getComparator() {
return bcelComparator;
}
/**
* @param comparator Comparison strategy object
*/
public static void setComparator(final BCELComparator comparator) {
bcelComparator = comparator;
}
// annotations defined on the parameters of a method
private ParameterAnnotationEntry[] parameterAnnotationEntries;
@@ -84,7 +67,7 @@ public final class JavaMethod extends FieldOrMethod {
* Construct object from file stream.
*
* @param file Input stream
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
JavaMethod(final DataInput file, final ConstantPool constantPool) throws IOException, ClassFormatException {
@@ -92,11 +75,11 @@ public final class JavaMethod extends FieldOrMethod {
}
/**
* @param accessFlags Access rights of method
* @param nameIndex Points to field name in constant pool
* @param accessFlags Access rights of method
* @param nameIndex Points to field name in constant pool
* @param signatureIndex Points to encoded signature
* @param attributes Collection of attributes
* @param constantPool Array of constants
* @param attributes Collection of attributes
* @param constantPool Array of constants
*/
public JavaMethod(final int accessFlags, final int nameIndex, final int signatureIndex, final Attribute[] attributes, final ConstantPool constantPool) {
super(accessFlags, nameIndex, signatureIndex, attributes, constantPool);
@@ -112,6 +95,20 @@ public final class JavaMethod extends FieldOrMethod {
super(c);
}
/**
* @return Comparison strategy object
*/
public static BCELComparator getComparator() {
return bcelComparator;
}
/**
* @param comparator Comparison strategy object
*/
public static void setComparator(final BCELComparator comparator) {
bcelComparator = comparator;
}
/**
* Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
* I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
@@ -162,7 +159,7 @@ public final class JavaMethod extends FieldOrMethod {
/**
* @return ExceptionTable attribute of method, if any, i.e., list all exceptions the method may throw not exception
* handlers!
* handlers!
*/
public ExceptionTable getExceptionTable() {
for (final Attribute attribute : super.getAttributes()) {

24
src/main/java/haidnor/jvm/bcel/classfile/LineNumber.java
View File

@@ -32,10 +32,14 @@ public final class LineNumber implements Cloneable, Node {
static final LineNumber[] EMPTY_ARRAY = {};
/** Program Counter (PC) corresponds to line */
/**
* Program Counter (PC) corresponds to line
*/
private int startPc;
/** number in source file */
/**
* number in source file
*/
private int lineNumber;
/**
@@ -49,7 +53,7 @@ public final class LineNumber implements Cloneable, Node {
}
/**
* @param startPc Program Counter (PC) corresponds to
* @param startPc Program Counter (PC) corresponds to
* @param lineNumber line number in source file
*/
public LineNumber(final int startPc, final int lineNumber) {
@@ -107,13 +111,6 @@ public final class LineNumber implements Cloneable, Node {
return lineNumber & 0xffff;
}
/**
* @return PC in code
*/
public int getStartPC() {
return startPc & 0xffff;
}
/**
* @param lineNumber the source line number
*/
@@ -121,6 +118,13 @@ public final class LineNumber implements Cloneable, Node {
this.lineNumber = (short) lineNumber;
}
/**
* @return PC in code
*/
public int getStartPC() {
return startPc & 0xffff;
}
/**
* @param startPc the pc for this line number
*/

20
src/main/java/haidnor/jvm/bcel/classfile/LineNumberTable.java
View File

@@ -41,9 +41,9 @@ public final class LineNumberTable extends Attribute implements Iterable<LineNum
/**
* Construct object from input stream.
*
* @param nameIndex Index of name
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Index of name
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
* @throws IOException if an I/O Exception occurs in readUnsignedShort
*/
@@ -126,6 +126,13 @@ public final class LineNumberTable extends Attribute implements Iterable<LineNum
return lineNumberTable;
}
/**
* @param lineNumberTable the line number entries for this table
*/
public void setLineNumberTable(final LineNumber[] lineNumberTable) {
this.lineNumberTable = lineNumberTable;
}
/**
* Map byte code positions to source code lines.
*
@@ -181,13 +188,6 @@ public final class LineNumberTable extends Attribute implements Iterable<LineNum
return Stream.of(lineNumberTable).iterator();
}
/**
* @param lineNumberTable the line number entries for this table
*/
public void setLineNumberTable(final LineNumber[] lineNumberTable) {
this.lineNumberTable = lineNumberTable;
}
/**
* @return String representation.
*/

113
src/main/java/haidnor/jvm/bcel/classfile/LocalVariable.java
View File

@@ -36,35 +36,28 @@ import java.io.IOException;
public final class LocalVariable implements Cloneable, Node {
static final LocalVariable[] EMPTY_ARRAY = {};
/**
* Range in which the variable is valid.
*/
private int startPc;
private int length;
/**
* Index in constant pool of variable name.
*/
private int nameIndex;
/**
* Technically, a decscriptor_index for a local variable table entry and a signatureIndex for a local variable type table entry. Index of variable signature
*/
private int signatureIndex;
/*
* Variable is index'th local variable on this method's frame.
*/
private int index;
private ConstantPool constantPool;
/**
* Never changes; used to match up with LocalVariableTypeTable entries.
*/
private final int origIndex;
/**
* Range in which the variable is valid.
*/
private int startPc;
private int length;
/**
* Index in constant pool of variable name.
*/
private int nameIndex;
/**
* Technically, a decscriptor_index for a local variable table entry and a signatureIndex for a local variable type table entry. Index of variable signature
*/
private int signatureIndex;
/*
* Variable is index'th local variable on this method's frame.
*/
private int index;
private ConstantPool constantPool;
/**
* Constructs object from file stream.
@@ -164,6 +157,13 @@ public final class LocalVariable implements Cloneable, Node {
return constantPool;
}
/**
* @param constantPool Constant pool to be used for this object.
*/
public void setConstantPool(final ConstantPool constantPool) {
this.constantPool = constantPool;
}
/**
* @return index of register where variable is stored
*/
@@ -171,6 +171,13 @@ public final class LocalVariable implements Cloneable, Node {
return index;
}
/**
* @param index the index in the local variable table of this variable
*/
public void setIndex(final int index) { // TODO unused
this.index = index;
}
/**
* @return Variable is valid within getStartPC() .. getStartPC()+getLength()
*/
@@ -178,6 +185,13 @@ public final class LocalVariable implements Cloneable, Node {
return length;
}
/**
* @param length the length of this local variable
*/
public void setLength(final int length) {
this.length = length;
}
/**
* @return Variable name.
*/
@@ -192,6 +206,13 @@ public final class LocalVariable implements Cloneable, Node {
return nameIndex;
}
/**
* @param nameIndex the index into the constant pool for the name of this variable
*/
public void setNameIndex(final int nameIndex) { // TODO unused
this.nameIndex = nameIndex;
}
/**
* @return index of register where variable was originally stored
*/
@@ -213,41 +234,6 @@ public final class LocalVariable implements Cloneable, Node {
return signatureIndex;
}
/**
* @return Start of range where the variable is valid
*/
public int getStartPC() {
return startPc;
}
/**
* @param constantPool Constant pool to be used for this object.
*/
public void setConstantPool(final ConstantPool constantPool) {
this.constantPool = constantPool;
}
/**
* @param index the index in the local variable table of this variable
*/
public void setIndex(final int index) { // TODO unused
this.index = index;
}
/**
* @param length the length of this local variable
*/
public void setLength(final int length) {
this.length = length;
}
/**
* @param nameIndex the index into the constant pool for the name of this variable
*/
public void setNameIndex(final int nameIndex) { // TODO unused
this.nameIndex = nameIndex;
}
/**
* @param signatureIndex the index into the constant pool for the signature of this variable
*/
@@ -255,6 +241,13 @@ public final class LocalVariable implements Cloneable, Node {
this.signatureIndex = signatureIndex;
}
/**
* @return Start of range where the variable is valid
*/
public int getStartPC() {
return startPc;
}
/**
* @param startPc Specify range where the local variable is valid.
*/

29
src/main/java/haidnor/jvm/bcel/classfile/LocalVariableTable.java
View File

@@ -40,9 +40,9 @@ public class LocalVariableTable extends Attribute implements Iterable<LocalVaria
/**
* Construct object from input stream.
*
* @param nameIndex Index in constant pool
* @param length Content length in bytes
* @param input Input stream
* @param nameIndex Index in constant pool
* @param length Content length in bytes
* @param input Input stream
* @param constantPool Array of constants
* @throws IOException if an I/O error occurs.
*/
@@ -56,10 +56,10 @@ public class LocalVariableTable extends Attribute implements Iterable<LocalVaria
}
/**
* @param nameIndex Index in constant pool to 'LocalVariableTable'
* @param length Content length in bytes
* @param nameIndex Index in constant pool to 'LocalVariableTable'
* @param length Content length in bytes
* @param localVariableTable Table of local variables
* @param constantPool Array of constants
* @param constantPool Array of constants
*/
public LocalVariableTable(final int nameIndex, final int length, final LocalVariable[] localVariableTable, final ConstantPool constantPool) {
super(Const.ATTR_LOCAL_VARIABLE_TABLE, nameIndex, length, constantPool);
@@ -116,13 +116,10 @@ public class LocalVariableTable extends Attribute implements Iterable<LocalVaria
}
/**
*
* @param index the variable slot
*
* @return the first LocalVariable that matches the slot or null if not found
*
* @deprecated since 5.2 because multiple variables can share the same slot, use getLocalVariable(int index, int pc)
* instead.
* instead.
*/
@java.lang.Deprecated
public final LocalVariable getLocalVariable(final int index) {
@@ -135,10 +132,8 @@ public class LocalVariableTable extends Attribute implements Iterable<LocalVaria
}
/**
*
* @param index the variable slot
* @param pc the current pc that this variable is alive
*
* @param pc the current pc that this variable is alive
* @return the LocalVariable that matches or null if not found
*/
public final LocalVariable getLocalVariable(final int index, final int pc) {
@@ -161,6 +156,10 @@ public class LocalVariableTable extends Attribute implements Iterable<LocalVaria
return localVariableTable;
}
public final void setLocalVariableTable(final LocalVariable[] localVariableTable) {
this.localVariableTable = localVariableTable;
}
public final int getTableLength() {
return localVariableTable == null ? 0 : localVariableTable.length;
}
@@ -170,10 +169,6 @@ public class LocalVariableTable extends Attribute implements Iterable<LocalVaria
return Stream.of(localVariableTable).iterator();
}
public final void setLocalVariableTable(final LocalVariable[] localVariableTable) {
this.localVariableTable = localVariableTable;
}
/**
* @return String representation.
*/

28
src/main/java/haidnor/jvm/bcel/classfile/LocalVariableTypeTable.java
View File

@@ -1,18 +1,18 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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 haidnor.jvm.bcel.classfile;

28
src/main/java/haidnor/jvm/bcel/classfile/MethodParameter.java
View File

@@ -27,15 +27,19 @@ import java.io.IOException;
* Entry of the parameters table.
*
* @see <a href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.24"> The class File Format :
* The MethodParameters Attribute</a>
* The MethodParameters Attribute</a>
* @since 6.0
*/
public class MethodParameter implements Cloneable, Node {
/** Index of the CONSTANT_Utf8_info structure in the constant_pool table representing the name of the parameter */
/**
* Index of the CONSTANT_Utf8_info structure in the constant_pool table representing the name of the parameter
*/
private int nameIndex;
/** The access flags */
/**
* The access flags
*/
private int accessFlags;
public MethodParameter() {
@@ -45,7 +49,7 @@ public class MethodParameter implements Cloneable, Node {
* Construct object from input stream.
*
* @param input Input stream
* @throws IOException if an I/O error occurs.
* @throws IOException if an I/O error occurs.
* @throws ClassFormatException if a class is malformed or cannot be interpreted as a class file
*/
MethodParameter(final DataInput input) throws IOException {
@@ -85,10 +89,18 @@ public class MethodParameter implements Cloneable, Node {
return accessFlags;
}
public void setAccessFlags(final int accessFlags) {
this.accessFlags = accessFlags;
}
public int getNameIndex() {
return nameIndex;
}
public void setNameIndex(final int nameIndex) {
this.nameIndex = nameIndex;
}
/**
* Returns the name of the parameter.
*/
@@ -110,12 +122,4 @@ public class MethodParameter implements Cloneable, Node {
public boolean isSynthetic() {
return (accessFlags & Const.ACC_SYNTHETIC) != 0;
}
public void setAccessFlags(final int accessFlags) {
this.accessFlags = accessFlags;
}
public void setNameIndex(final int nameIndex) {
this.nameIndex = nameIndex;
}
}

10
src/main/java/haidnor/jvm/bcel/classfile/MethodParameters.java
View File

@@ -30,7 +30,7 @@ import java.util.stream.Stream;
* This class represents a MethodParameters attribute.
*
* @see <a href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.24"> The class File Format :
* The MethodParameters Attribute</a>
* The MethodParameters Attribute</a>
* @since 6.0
*/
public class MethodParameters extends Attribute implements Iterable<MethodParameter> {
@@ -86,12 +86,12 @@ public class MethodParameters extends Attribute implements Iterable<MethodParame
return parameters;
}
public void setParameters(final MethodParameter[] parameters) {
this.parameters = parameters;
}
@Override
public Iterator<MethodParameter> iterator() {
return Stream.of(parameters).iterator();
}
public void setParameters(final MethodParameter[] parameters) {
this.parameters = parameters;
}
}

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