jtulach@144: /*
jtulach@144:  * Copyright (c) 2002, 2005, Oracle and/or its affiliates. All rights reserved.
jtulach@144:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jtulach@144:  *
jtulach@144:  * This code is free software; you can redistribute it and/or modify it
jtulach@144:  * under the terms of the GNU General Public License version 2 only, as
jtulach@144:  * published by the Free Software Foundation.  Oracle designates this
jtulach@144:  * particular file as subject to the "Classpath" exception as provided
jtulach@144:  * by Oracle in the LICENSE file that accompanied this code.
jtulach@144:  *
jtulach@144:  * This code is distributed in the hope that it will be useful, but WITHOUT
jtulach@144:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jtulach@144:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jtulach@144:  * version 2 for more details (a copy is included in the LICENSE file that
jtulach@144:  * accompanied this code).
jtulach@144:  *
jtulach@144:  * You should have received a copy of the GNU General Public License version
jtulach@144:  * 2 along with this work; if not, write to the Free Software Foundation,
jtulach@144:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jtulach@144:  *
jtulach@144:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jtulach@144:  * or visit www.oracle.com if you need additional information or have any
jtulach@144:  * questions.
jtulach@144:  */
jtulach@144: 
jtulach@167: package org.apidesign.javap;
jtulach@144: 
jtulach@144: 
jaroslav@397: import java.io.DataInputStream;
jaroslav@397: import java.io.IOException;
jtulach@167: import static org.apidesign.javap.RuntimeConstants.*;
jtulach@144: 
jtulach@144: /**
jtulach@144:  * Strores method data informastion.
jtulach@144:  *
jtulach@144:  * @author  Sucheta Dambalkar (Adopted code from jdis)
jtulach@144:  */
jtulach@144: public class MethodData {
jtulach@144: 
jtulach@144:     ClassData cls;
jtulach@144:     int access;
jtulach@144:     int name_index;
jtulach@144:     int descriptor_index;
jtulach@144:     int attributes_count;
jtulach@144:     byte[] code;
jtulach@144:     Vector exception_table = new Vector(0);
jtulach@144:     Vector lin_num_tb = new Vector(0);
jtulach@144:     Vector loc_var_tb = new Vector(0);
jtulach@144:     StackMapTableData[] stackMapTable;
jtulach@144:     StackMapData[] stackMap;
jtulach@144:     int[] exc_index_table=null;
jtulach@144:     Vector attrs=new Vector(0);
jtulach@144:     Vector code_attrs=new Vector(0);
jtulach@144:     int max_stack,  max_locals;
jtulach@144:     boolean isSynthetic=false;
jtulach@144:     boolean isDeprecated=false;
jtulach@144: 
jtulach@144:     public MethodData(ClassData cls){
jtulach@144:         this.cls=cls;
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read method info.
jtulach@144:      */
jtulach@144:     public void read(DataInputStream in) throws IOException {
jtulach@144:         access = in.readUnsignedShort();
jtulach@144:         name_index=in.readUnsignedShort();
jtulach@144:         descriptor_index =in.readUnsignedShort();
jtulach@144:         int attributes_count = in.readUnsignedShort();
jtulach@144:         for (int i = 0; i < attributes_count; i++) {
jtulach@144:             int attr_name_index=in.readUnsignedShort();
jtulach@144: 
jtulach@144:         readAttr: {
jtulach@144:                 if (cls.getTag(attr_name_index)==CONSTANT_UTF8) {
jtulach@144:                     String  attr_name=cls.getString(attr_name_index);
jtulach@144:                     if ( attr_name.equals("Code")){
jtulach@144:                         readCode (in);
jtulach@144:                         AttrData attr=new AttrData(cls);
jtulach@144:                         attr.read(attr_name_index);
jtulach@144:                         attrs.addElement(attr);
jtulach@144:                         break readAttr;
jtulach@144:                     } else if ( attr_name.equals("Exceptions")){
jtulach@144:                         readExceptions(in);
jtulach@144:                         AttrData attr=new AttrData(cls);
jtulach@144:                         attr.read(attr_name_index);
jtulach@144:                         attrs.addElement(attr);
jtulach@144:                         break readAttr;
jtulach@144:                     } else if (attr_name.equals("Synthetic")){
jtulach@144:                         if (in.readInt()!=0)
jtulach@144:                             throw new ClassFormatError("invalid Synthetic attr length");
jtulach@144:                         isSynthetic=true;
jtulach@144:                         AttrData attr=new AttrData(cls);
jtulach@144:                         attr.read(attr_name_index);
jtulach@144:                         attrs.addElement(attr);
jtulach@144:                         break readAttr;
jtulach@144:                     } else if (attr_name.equals("Deprecated")){
jtulach@144:                         if (in.readInt()!=0)
jtulach@144:                             throw new ClassFormatError("invalid Synthetic attr length");
jtulach@144:                         isDeprecated = true;
jtulach@144:                         AttrData attr=new AttrData(cls);
jtulach@144:                         attr.read(attr_name_index);
jtulach@144:                         attrs.addElement(attr);
jtulach@144:                         break readAttr;
jtulach@144:                     }
jtulach@144:                 }
jtulach@144:                 AttrData attr=new AttrData(cls);
jtulach@144:                 attr.read(attr_name_index, in);
jtulach@144:                 attrs.addElement(attr);
jtulach@144:             }
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read code attribute info.
jtulach@144:      */
jtulach@144:     public void readCode(DataInputStream in) throws IOException {
jtulach@144: 
jtulach@144:         int attr_length = in.readInt();
jtulach@144:         max_stack=in.readUnsignedShort();
jtulach@144:         max_locals=in.readUnsignedShort();
jtulach@144:         int codelen=in.readInt();
jtulach@144: 
jtulach@144:         code=new byte[codelen];
jtulach@144:         int totalread = 0;
jtulach@144:         while(totalread < codelen){
jtulach@144:             totalread += in.read(code, totalread, codelen-totalread);
jtulach@144:         }
jtulach@144:         //      in.read(code, 0, codelen);
jtulach@144:         int clen = 0;
jtulach@144:         readExceptionTable(in);
jtulach@144:         int code_attributes_count = in.readUnsignedShort();
jtulach@144: 
jtulach@144:         for (int k = 0 ; k < code_attributes_count ; k++) {
jtulach@144:             int table_name_index=in.readUnsignedShort();
jtulach@144:             int table_name_tag=cls.getTag(table_name_index);
jtulach@144:             AttrData attr=new AttrData(cls);
jtulach@144:             if (table_name_tag==CONSTANT_UTF8) {
jtulach@144:                 String table_name_tstr=cls.getString(table_name_index);
jtulach@144:                 if (table_name_tstr.equals("LineNumberTable")) {
jtulach@144:                     readLineNumTable(in);
jtulach@144:                     attr.read(table_name_index);
jtulach@144:                 } else if (table_name_tstr.equals("LocalVariableTable")) {
jtulach@144:                     readLocVarTable(in);
jtulach@144:                     attr.read(table_name_index);
jtulach@144:                 } else if (table_name_tstr.equals("StackMapTable")) {
jtulach@144:                     readStackMapTable(in);
jtulach@144:                     attr.read(table_name_index);
jtulach@144:                 } else if (table_name_tstr.equals("StackMap")) {
jtulach@144:                     readStackMap(in);
jtulach@144:                     attr.read(table_name_index);
jtulach@144:                 } else {
jtulach@144:                     attr.read(table_name_index, in);
jtulach@144:                 }
jtulach@144:                 code_attrs.addElement(attr);
jtulach@144:                 continue;
jtulach@144:             }
jtulach@144: 
jtulach@144:             attr.read(table_name_index, in);
jtulach@144:             code_attrs.addElement(attr);
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read exception table info.
jtulach@144:      */
jtulach@144:     void readExceptionTable (DataInputStream in) throws IOException {
jtulach@144:         int exception_table_len=in.readUnsignedShort();
jtulach@144:         exception_table=new Vector(exception_table_len);
jtulach@144:         for (int l = 0; l < exception_table_len; l++) {
jtulach@144:             exception_table.addElement(new TrapData(in, l));
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read LineNumberTable attribute info.
jtulach@144:      */
jtulach@144:     void readLineNumTable (DataInputStream in) throws IOException {
jtulach@144:         int attr_len = in.readInt(); // attr_length
jtulach@144:         int lin_num_tb_len = in.readUnsignedShort();
jtulach@144:         lin_num_tb=new Vector(lin_num_tb_len);
jtulach@144:         for (int l = 0; l < lin_num_tb_len; l++) {
jtulach@144:             lin_num_tb.addElement(new LineNumData(in));
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read LocalVariableTable attribute info.
jtulach@144:      */
jtulach@144:     void readLocVarTable (DataInputStream in) throws IOException {
jtulach@144:         int attr_len=in.readInt(); // attr_length
jtulach@144:         int loc_var_tb_len = in.readUnsignedShort();
jtulach@144:         loc_var_tb = new Vector(loc_var_tb_len);
jtulach@144:         for (int l = 0; l < loc_var_tb_len; l++) {
jtulach@144:             loc_var_tb.addElement(new LocVarData(in));
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read Exception attribute info.
jtulach@144:      */
jtulach@144:     public void readExceptions(DataInputStream in) throws IOException {
jtulach@144:         int attr_len=in.readInt(); // attr_length in prog
jtulach@144:         int num_exceptions = in.readUnsignedShort();
jtulach@144:         exc_index_table=new int[num_exceptions];
jtulach@144:         for (int l = 0; l < num_exceptions; l++) {
jtulach@144:             int exc=in.readShort();
jtulach@144:             exc_index_table[l]=exc;
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read StackMapTable attribute info.
jtulach@144:      */
jtulach@144:     void readStackMapTable(DataInputStream in) throws IOException {
jtulach@144:         int attr_len = in.readInt();  //attr_length
jtulach@144:         int stack_map_tb_len = in.readUnsignedShort();
jtulach@144:         stackMapTable = new StackMapTableData[stack_map_tb_len];
jtulach@144:         for (int i=0; i<stack_map_tb_len; i++) {
jtulach@144:             stackMapTable[i] = StackMapTableData.getInstance(in, this);
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Read StackMap attribute info.
jtulach@144:      */
jtulach@144:     void readStackMap(DataInputStream in) throws IOException {
jtulach@144:         int attr_len = in.readInt();  //attr_length
jtulach@144:         int stack_map_len = in.readUnsignedShort();
jtulach@144:         stackMap = new StackMapData[stack_map_len];
jtulach@144:         for (int i = 0; i<stack_map_len; i++) {
jtulach@144:             stackMap[i] = new StackMapData(in, this);
jtulach@144:         }
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return access of the method.
jtulach@144:      */
jaroslav@392:     public int getAccess(){
jaroslav@392:         return access;
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return name of the method.
jtulach@144:      */
jtulach@144:     public String getName(){
jtulach@144:         return cls.getStringValue(name_index);
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return internal siganature of the method.
jtulach@144:      */
jtulach@144:     public String getInternalSig(){
jtulach@144:         return cls.getStringValue(descriptor_index);
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return code attribute data of a method.
jtulach@144:      */
jtulach@144:     public byte[] getCode(){
jtulach@144:         return code;
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return LineNumberTable size.
jtulach@144:      */
jtulach@144:     public int getnumlines(){
jtulach@144:         return lin_num_tb.size();
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return LineNumberTable
jtulach@144:      */
jtulach@144:     public Vector getlin_num_tb(){
jtulach@144:         return lin_num_tb;
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return LocalVariableTable size.
jtulach@144:      */
jtulach@144:     public int getloc_var_tbsize(){
jtulach@144:         return loc_var_tb.size();
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return LocalVariableTable.
jtulach@144:      */
jtulach@144:     public Vector getloc_var_tb(){
jtulach@144:         return loc_var_tb;
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return StackMap.
jtulach@144:      */
jtulach@144:     public StackMapData[] getStackMap() {
jtulach@144:         return stackMap;
jtulach@144:     }
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return StackMapTable.
jtulach@144:      */
jtulach@144:     public StackMapTableData[] getStackMapTable() {
jtulach@144:         return stackMapTable;
jtulach@144:     }
jtulach@144: 
lubomir@221:     public StackMapIterator createStackMapIterator() {
lubomir@307:         return new StackMapIterator(this);
lubomir@221:     }
lubomir@221: 
jtulach@144:     /**
jtulach@144:      * Return true if method is static
jtulach@144:      */
jtulach@144:     public boolean isStatic(){
jtulach@144:         if ((access & ACC_STATIC)   !=0) return true;
jtulach@144:         return false;
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return max depth of operand stack.
jtulach@144:      */
jtulach@144:     public int getMaxStack(){
jtulach@144:         return  max_stack;
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return number of local variables.
jtulach@144:      */
jtulach@144:     public int getMaxLocals(){
jtulach@144:         return max_locals;
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return exception index table in Exception attribute.
jtulach@144:      */
jtulach@144:     public int []get_exc_index_table(){
jtulach@144:         return  exc_index_table;
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return exception table in code attributre.
jtulach@144:      */
jaroslav@288:     public TrapDataIterator getTrapDataIterator(){
jaroslav@288:         return new TrapDataIterator(exception_table);
jtulach@144:     }
jaroslav@288:     
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return method attributes.
jtulach@144:      */
jtulach@144:     public Vector getAttributes(){
jtulach@144:         return attrs;
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return code attributes.
jtulach@144:      */
jtulach@144:     public Vector getCodeAttributes(){
jtulach@144:         return code_attrs;
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return true if method id synthetic.
jtulach@144:      */
jtulach@144:     public boolean isSynthetic(){
jtulach@144:         return isSynthetic;
jtulach@144:     }
jtulach@144: 
jtulach@144: 
jtulach@144:     /**
jtulach@144:      * Return true if method is deprecated.
jtulach@144:      */
jtulach@144:     public boolean isDeprecated(){
jtulach@144:         return isDeprecated;
jtulach@144:     }
jaroslav@152: 
jaroslav@152:     public byte[] findAnnotationData(boolean classRetention) {
jaroslav@152:         String n = classRetention ?
jaroslav@152:             "RuntimeInvisibleAnnotations" : // NOI18N
jaroslav@152:             "RuntimeVisibleAnnotations"; // NOI18N
jaroslav@152:         AttrData[] arr = new AttrData[attrs.size()];
jaroslav@152:         attrs.copyInto(arr);
jaroslav@152:         return ClassData.findAttr(n, arr);
jaroslav@152:     }
jaroslav@397: 
jaroslav@397:     public boolean isConstructor() {
jaroslav@397:         return "<init>".equals(getName());
jaroslav@397:     }
jtulach@144: }