mirror of
https://github.com/i-net-software/JWebAssembly.git
synced 2025-03-15 02:44:47 +01:00
add getDeclaringClassFile()
This commit is contained in:
Volker Berlin
parent
f2efc5aafd
commit
0803c290c5
@ -1,220 +1,220 @@
|
||||
/*
|
||||
Copyright 2011 - 2017 Volker Berlin (i-net software)
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
*/
|
||||
package de.inetsoftware.classparser;
|
||||
|
||||
import java.io.DataInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
|
||||
import de.inetsoftware.classparser.Attributes.AttributeInfo;
|
||||
|
||||
/**
|
||||
* http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html
|
||||
* http://docs.oracle.com/javase/specs/jvms/se5.0/html/ClassFile.doc.html
|
||||
*
|
||||
* @author Volker Berlin
|
||||
*/
|
||||
public class ClassFile {
|
||||
|
||||
private final DataInputStream input;
|
||||
|
||||
private final int minorVersion;
|
||||
|
||||
private final int majorVersion;
|
||||
|
||||
private final ConstantPool constantPool;
|
||||
|
||||
private final int accessFlags;
|
||||
|
||||
private final ConstantClass thisClass;
|
||||
|
||||
private final ConstantClass superClass;
|
||||
|
||||
private final ConstantClass[] interfaces;
|
||||
|
||||
private final FieldInfo[] fields;
|
||||
|
||||
private final MethodInfo[] methods;
|
||||
|
||||
private final Attributes attributes;
|
||||
|
||||
private String thisSignature;
|
||||
|
||||
private String superSignature;
|
||||
|
||||
/**
|
||||
* Load a class file and create a model of the class.
|
||||
*
|
||||
* @param stream
|
||||
* The InputStream of the class file. Will be closed if finish.
|
||||
* @throws IOException
|
||||
* if this input stream reaches the end before reading the class file.
|
||||
*/
|
||||
public ClassFile( InputStream stream ) throws IOException {
|
||||
this.input = new DataInputStream( stream );
|
||||
int magic = input.readInt();
|
||||
if( magic != 0xCAFEBABE ) {
|
||||
throw new IOException( "Invalid class magic: " + Integer.toHexString( magic ) );
|
||||
}
|
||||
minorVersion = input.readUnsignedShort();
|
||||
majorVersion = input.readUnsignedShort();
|
||||
|
||||
constantPool = new ConstantPool( input );
|
||||
accessFlags = input.readUnsignedShort();
|
||||
thisClass = (ConstantClass)constantPool.get( input.readUnsignedShort() );
|
||||
superClass = (ConstantClass)constantPool.get( input.readUnsignedShort() );
|
||||
interfaces = new ConstantClass[input.readUnsignedShort()];
|
||||
for( int i = 0; i < interfaces.length; i++ ) {
|
||||
interfaces[i] = (ConstantClass)constantPool.get( input.readUnsignedShort() );
|
||||
}
|
||||
fields = readFields();
|
||||
methods = readMethods();
|
||||
attributes = new Attributes( input, constantPool );
|
||||
|
||||
stream.close();
|
||||
|
||||
AttributeInfo info = attributes.get( "Signature" );
|
||||
if( info != null ) {
|
||||
int idx = info.getDataInputStream().readShort();
|
||||
String signature = (String)constantPool.get( idx );
|
||||
int count = 0;
|
||||
for( int i = 0; i < signature.length(); i++ ) {
|
||||
char ch = signature.charAt( i );
|
||||
switch( ch ) {
|
||||
case '<':
|
||||
count++;
|
||||
continue;
|
||||
case '>':
|
||||
count--;
|
||||
continue;
|
||||
}
|
||||
if( count == 0 ) {
|
||||
thisSignature = signature.substring( 0, i );
|
||||
superSignature = signature.substring( i );
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get value of SourceFile if available.
|
||||
*
|
||||
* @return the source file name or null.
|
||||
* @throws IOException
|
||||
* if an I/O error occurs.
|
||||
*/
|
||||
public String getSourceFile() throws IOException {
|
||||
return attributes.getSourceFile();
|
||||
}
|
||||
|
||||
public ConstantPool getConstantPool() {
|
||||
return constantPool;
|
||||
}
|
||||
|
||||
public ConstantClass getThisClass() {
|
||||
return thisClass;
|
||||
}
|
||||
|
||||
public ConstantClass getSuperClass() {
|
||||
return superClass;
|
||||
}
|
||||
|
||||
public ConstantClass[] getInterfaces(){
|
||||
return interfaces;
|
||||
}
|
||||
|
||||
public MethodInfo[] getMethods() {
|
||||
return methods;
|
||||
}
|
||||
|
||||
public int getMethodCount( String name ) {
|
||||
int count = 0;
|
||||
for( MethodInfo method : methods ) {
|
||||
if( name.equals( method.getName() ) ) {
|
||||
count++;
|
||||
}
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
public FieldInfo getField( String name ) {
|
||||
for( FieldInfo field : fields ) {
|
||||
if( name.equals( field.getName() ) ) {
|
||||
return field;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* The access flags of the class.
|
||||
* http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.1-200-E
|
||||
* http://docs.oracle.com/javase/specs/jvms/se5.0/html/ClassFile.doc.html#23242
|
||||
* @see #isInterface()
|
||||
*/
|
||||
public int getAccessFlags() {
|
||||
return accessFlags;
|
||||
}
|
||||
|
||||
private FieldInfo[] readFields() throws IOException {
|
||||
FieldInfo[] fields = new FieldInfo[input.readUnsignedShort()];
|
||||
for( int i = 0; i < fields.length; i++ ) {
|
||||
fields[i] = new FieldInfo( input, constantPool );
|
||||
}
|
||||
return fields;
|
||||
}
|
||||
|
||||
private MethodInfo[] readMethods() throws IOException {
|
||||
MethodInfo[] methods = new MethodInfo[input.readUnsignedShort()];
|
||||
for( int i = 0; i < methods.length; i++ ) {
|
||||
methods[i] = new MethodInfo( input, constantPool );
|
||||
}
|
||||
return methods;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the signature of the class with generic types.
|
||||
*/
|
||||
public String getThisSignature() {
|
||||
return thisSignature;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the signature of the super class with generic types.
|
||||
*/
|
||||
public String getSuperSignature() {
|
||||
return superSignature;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the type of class.
|
||||
*/
|
||||
public Type getType() {
|
||||
if( (accessFlags & 0x0200) > 0 ) {
|
||||
return Type.Interface;
|
||||
}
|
||||
if( superClass.getName().equals( "java/lang/Enum" ) ) {
|
||||
return Type.Enum;
|
||||
}
|
||||
return Type.Class;
|
||||
}
|
||||
|
||||
public static enum Type {
|
||||
Class, Interface, Enum;
|
||||
}
|
||||
}
|
||||
/*
|
||||
Copyright 2011 - 2017 Volker Berlin (i-net software)
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
*/
|
||||
package de.inetsoftware.classparser;
|
||||
|
||||
import java.io.DataInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
|
||||
import de.inetsoftware.classparser.Attributes.AttributeInfo;
|
||||
|
||||
/**
|
||||
* http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html
|
||||
* http://docs.oracle.com/javase/specs/jvms/se5.0/html/ClassFile.doc.html
|
||||
*
|
||||
* @author Volker Berlin
|
||||
*/
|
||||
public class ClassFile {
|
||||
|
||||
private final DataInputStream input;
|
||||
|
||||
private final int minorVersion;
|
||||
|
||||
private final int majorVersion;
|
||||
|
||||
private final ConstantPool constantPool;
|
||||
|
||||
private final int accessFlags;
|
||||
|
||||
private final ConstantClass thisClass;
|
||||
|
||||
private final ConstantClass superClass;
|
||||
|
||||
private final ConstantClass[] interfaces;
|
||||
|
||||
private final FieldInfo[] fields;
|
||||
|
||||
private final MethodInfo[] methods;
|
||||
|
||||
private final Attributes attributes;
|
||||
|
||||
private String thisSignature;
|
||||
|
||||
private String superSignature;
|
||||
|
||||
/**
|
||||
* Load a class file and create a model of the class.
|
||||
*
|
||||
* @param stream
|
||||
* The InputStream of the class file. Will be closed if finish.
|
||||
* @throws IOException
|
||||
* if this input stream reaches the end before reading the class file.
|
||||
*/
|
||||
public ClassFile( InputStream stream ) throws IOException {
|
||||
this.input = new DataInputStream( stream );
|
||||
int magic = input.readInt();
|
||||
if( magic != 0xCAFEBABE ) {
|
||||
throw new IOException( "Invalid class magic: " + Integer.toHexString( magic ) );
|
||||
}
|
||||
minorVersion = input.readUnsignedShort();
|
||||
majorVersion = input.readUnsignedShort();
|
||||
|
||||
constantPool = new ConstantPool( input );
|
||||
accessFlags = input.readUnsignedShort();
|
||||
thisClass = (ConstantClass)constantPool.get( input.readUnsignedShort() );
|
||||
superClass = (ConstantClass)constantPool.get( input.readUnsignedShort() );
|
||||
interfaces = new ConstantClass[input.readUnsignedShort()];
|
||||
for( int i = 0; i < interfaces.length; i++ ) {
|
||||
interfaces[i] = (ConstantClass)constantPool.get( input.readUnsignedShort() );
|
||||
}
|
||||
fields = readFields();
|
||||
methods = readMethods();
|
||||
attributes = new Attributes( input, constantPool );
|
||||
|
||||
stream.close();
|
||||
|
||||
AttributeInfo info = attributes.get( "Signature" );
|
||||
if( info != null ) {
|
||||
int idx = info.getDataInputStream().readShort();
|
||||
String signature = (String)constantPool.get( idx );
|
||||
int count = 0;
|
||||
for( int i = 0; i < signature.length(); i++ ) {
|
||||
char ch = signature.charAt( i );
|
||||
switch( ch ) {
|
||||
case '<':
|
||||
count++;
|
||||
continue;
|
||||
case '>':
|
||||
count--;
|
||||
continue;
|
||||
}
|
||||
if( count == 0 ) {
|
||||
thisSignature = signature.substring( 0, i );
|
||||
superSignature = signature.substring( i );
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get value of SourceFile if available.
|
||||
*
|
||||
* @return the source file name or null.
|
||||
* @throws IOException
|
||||
* if an I/O error occurs.
|
||||
*/
|
||||
public String getSourceFile() throws IOException {
|
||||
return attributes.getSourceFile();
|
||||
}
|
||||
|
||||
public ConstantPool getConstantPool() {
|
||||
return constantPool;
|
||||
}
|
||||
|
||||
public ConstantClass getThisClass() {
|
||||
return thisClass;
|
||||
}
|
||||
|
||||
public ConstantClass getSuperClass() {
|
||||
return superClass;
|
||||
}
|
||||
|
||||
public ConstantClass[] getInterfaces(){
|
||||
return interfaces;
|
||||
}
|
||||
|
||||
public MethodInfo[] getMethods() {
|
||||
return methods;
|
||||
}
|
||||
|
||||
public int getMethodCount( String name ) {
|
||||
int count = 0;
|
||||
for( MethodInfo method : methods ) {
|
||||
if( name.equals( method.getName() ) ) {
|
||||
count++;
|
||||
}
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
public FieldInfo getField( String name ) {
|
||||
for( FieldInfo field : fields ) {
|
||||
if( name.equals( field.getName() ) ) {
|
||||
return field;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* The access flags of the class.
|
||||
* http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.1-200-E
|
||||
* http://docs.oracle.com/javase/specs/jvms/se5.0/html/ClassFile.doc.html#23242
|
||||
* @see #isInterface()
|
||||
*/
|
||||
public int getAccessFlags() {
|
||||
return accessFlags;
|
||||
}
|
||||
|
||||
private FieldInfo[] readFields() throws IOException {
|
||||
FieldInfo[] fields = new FieldInfo[input.readUnsignedShort()];
|
||||
for( int i = 0; i < fields.length; i++ ) {
|
||||
fields[i] = new FieldInfo( input, constantPool );
|
||||
}
|
||||
return fields;
|
||||
}
|
||||
|
||||
private MethodInfo[] readMethods() throws IOException {
|
||||
MethodInfo[] methods = new MethodInfo[input.readUnsignedShort()];
|
||||
for( int i = 0; i < methods.length; i++ ) {
|
||||
methods[i] = new MethodInfo( input, constantPool, this );
|
||||
}
|
||||
return methods;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the signature of the class with generic types.
|
||||
*/
|
||||
public String getThisSignature() {
|
||||
return thisSignature;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the signature of the super class with generic types.
|
||||
*/
|
||||
public String getSuperSignature() {
|
||||
return superSignature;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the type of class.
|
||||
*/
|
||||
public Type getType() {
|
||||
if( (accessFlags & 0x0200) > 0 ) {
|
||||
return Type.Interface;
|
||||
}
|
||||
if( superClass.getName().equals( "java/lang/Enum" ) ) {
|
||||
return Type.Enum;
|
||||
}
|
||||
return Type.Class;
|
||||
}
|
||||
|
||||
public static enum Type {
|
||||
Class, Interface, Enum;
|
||||
}
|
||||
}
|
||||
|
||||
@ -40,6 +40,8 @@ public class MethodInfo {
|
||||
|
||||
private Exceptions exceptions;
|
||||
|
||||
private ClassFile classFile;
|
||||
|
||||
/**
|
||||
* Read the method_info structure
|
||||
* http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.6
|
||||
@ -47,14 +49,20 @@ public class MethodInfo {
|
||||
*
|
||||
* @param input
|
||||
* @param constantPool
|
||||
* @param classFile the declaring class file
|
||||
* @throws IOException
|
||||
*/
|
||||
MethodInfo( DataInputStream input, ConstantPool constantPool ) throws IOException {
|
||||
MethodInfo( DataInputStream input, ConstantPool constantPool, ClassFile classFile ) throws IOException {
|
||||
this.accessFlags = input.readUnsignedShort();
|
||||
this.name = (String)constantPool.get( input.readUnsignedShort() );
|
||||
this.description = (String)constantPool.get( input.readUnsignedShort() );
|
||||
this.constantPool = constantPool;
|
||||
this.attributes = new Attributes( input, constantPool );
|
||||
this.classFile = classFile;
|
||||
}
|
||||
|
||||
public ClassFile getDeclaringClassFile() {
|
||||
return classFile;
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user