DismantleBytecode.java
| Index Score | ||
|---|---|---|
 |
 |
edu.umd.cs.findbugs.visitclass |
 |
 |
FindBugs |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| CYCLOMATIC | Cyclomatic complexity | |
| ELOC | Effective lines of code | |
| JAVA0119 | JAVA0119 Control variable changed within body of for loop | |
| OPERATORS | Number of operators | |
| LOGICAL_LINES | Number of statements | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| PROGRAM_LENGTH | Halstead program length | |
| COMPARISONS | Number of comparison operators | |
| LOC | Lines of code | |
| JAVA0071 | JAVA0071 Strings compared with == | |
| RETURNS | Number of return points from functions | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| OPERANDS | Number of operands | |
| SIZE | Size of the file in bytes | |
| FUNCTIONS | Number of function declarations | |
| LINES | Number of lines in the source file | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| JAVA0266 | JAVA0266 Use of System.out | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0068 | JAVA0068 Modifiers not declared in recommended order | |
| LOOPS | Number of loops | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| EXITS | Procedure exits | |
| JAVA0032 | JAVA0032 Switch statement missing default | |
| BLOCKS | Number of blocks | |
| JAVA0144 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0036 | JAVA0036 Missing braces in while statement | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0116 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0040 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0031 | JAVA0031 Case statement not properly closed | |
| NEST_DEPTH | Maximum nesting depth | |
| JAVA0075 | JAVA0075 Method parameter hides field | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0259 | JAVA0259 Return of collection/array field | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0035 | JAVA0035 Missing braces in for statement | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| DOC_COMMENT | Number of javadoc comment lines | |
| WHITESPACE | Number of whitespace lines | |
| COMMENTS | Comment lines | |
/*
* FindBugs - Find bugs in Java programs
* Copyright (C) 2003,2004 University of Maryland
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.umd.cs.findbugs.visitclass;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.text.NumberFormat;
import org.apache.bcel.classfile.Code;
import org.apache.bcel.classfile.CodeException;
import org.apache.bcel.classfile.Constant;
import org.apache.bcel.classfile.ConstantCP;
import org.apache.bcel.classfile.ConstantClass;
import org.apache.bcel.classfile.ConstantDouble;
import org.apache.bcel.classfile.ConstantFieldref;
import org.apache.bcel.classfile.ConstantFloat;
import org.apache.bcel.classfile.ConstantInteger;
import org.apache.bcel.classfile.ConstantInterfaceMethodref;
import org.apache.bcel.classfile.ConstantLong;
import org.apache.bcel.classfile.ConstantMethodref;
import org.apache.bcel.classfile.ConstantNameAndType;
import org.apache.bcel.classfile.ConstantString;
import org.apache.bcel.classfile.LineNumberTable;
import edu.umd.cs.findbugs.annotations.CheckForNull;
import edu.umd.cs.findbugs.annotations.SuppressWarnings;
import edu.umd.cs.findbugs.ba.AnalysisContext;
import edu.umd.cs.findbugs.ba.XClass;
import edu.umd.cs.findbugs.ba.XField;
import edu.umd.cs.findbugs.ba.XMethod;
import edu.umd.cs.findbugs.classfile.CheckedAnalysisException;
import edu.umd.cs.findbugs.classfile.ClassDescriptor;
import edu.umd.cs.findbugs.classfile.DescriptorFactory;
import edu.umd.cs.findbugs.classfile.FieldDescriptor;
import edu.umd.cs.findbugs.classfile.Global;
import edu.umd.cs.findbugs.classfile.MethodDescriptor;
import edu.umd.cs.findbugs.internalAnnotations.SlashedClassName;
abstract public class DismantleBytecode extends AnnotationVisitor {
private int opcode;
private boolean opcodeIsWide;
private int PC,nextPC;
private int branchOffset;
private int branchTarget;
private int branchFallThrough;
private int[] switchOffsets;
private int[] switchLabels;
private int[] prevOpcode = new int[32];
private int currentPosInPrevOpcodeBuffer;
private int sizePrevOpcodeBuffer;
private int defaultSwitchOffset;
private @SlashedClassName String classConstantOperand;
private ClassDescriptor referencedClass;
private XClass referencedXClass;
private MethodDescriptor referencedMethod;
private XMethod referencedXMethod;
private FieldDescriptor referencedField;
private XField referencedXField;
private String dottedClassConstantOperand;
private String nameConstantOperand;
private String sigConstantOperand;
private String dottedSigConstantOperand;
private String stringConstantOperand;
private String refConstantOperand;
private boolean refFieldIsStatic;
private Constant constantRefOperand;
private int intConstant;
private long longConstant;
private float floatConstant;
private double doubleConstant;
private int registerOperand;
private boolean isRegisterLoad;
private boolean isRegisterStore;
private static final int INVALID_OFFSET = Integer.MIN_VALUE;
private static final String NOT_AVAILABLE = "none";
static String replaceSlashesWithDots(String c) {
return c.replace('/', '.');
}
/**
* Meaning of bytecode operands
*/
public static final byte M_INT = 1;
public static final byte M_UINT = 2;
public static final byte M_CP = 3;
public static final byte M_R = 4;
public static final byte M_BR = 5;
public static final byte M_PAD = 6;
/**
* Meaning of bytecode operands
*/
static final byte[][] MEANING_OF_OPERANDS = {
// 0 1 2 3 4 5 6 7 8 9
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {M_INT}, {M_INT}, {M_CP}, {M_CP},
{M_CP}, {M_R}, {M_R}, {M_R}, {M_R}, {M_R}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {M_R}, {M_R}, {M_R}, {M_R}, {M_R}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
// 130 1 2 3 4 5 6 7 8 9
{}, {}, {M_R, M_INT}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR},
{M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_BR}, {M_R},
// 170 1 2 3 4 5 6 7 8 9
{}, {}, {}, {}, {}, {}, {}, {}, {M_CP}, {M_CP},
{M_CP}, {M_CP}, {M_CP}, {M_CP}, {M_CP},
{M_CP, M_PAD, M_PAD}, {}, {M_CP}, {M_UINT}, {M_CP},
// 190 1 2 3 4 5 6 7 8 9
{}, {}, {M_CP}, {M_CP}, {}, {}, {M_PAD}, {M_CP, M_UINT}, {M_BR}, {M_BR},
{M_BR}, {M_BR}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {},
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}
};
protected byte[] codeBytes;
protected LineNumberTable lineNumberTable;
// Accessors
public ClassDescriptor getClassDescriptorOperand() {
if (dottedClassConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getClassDescriptorOperand called but value not available");
return referencedClass;
}
public @CheckForNull
XClass getXClassOperand() {
return referencedXClass;
}
public MethodDescriptor getMethodDescriptorOperand() {
if (nameConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getMethodDescriptorOperand called but value not available");
if (referencedMethod == null) {
referencedMethod = DescriptorFactory.instance().getMethodDescriptor(classConstantOperand, nameConstantOperand, sigConstantOperand, opcode == INVOKESTATIC);
}
return referencedMethod;
}
public @CheckForNull
XMethod getXMethodOperand() {
if (referencedXClass != null && referencedXMethod == null)
referencedXMethod = referencedXClass.findMethod(nameConstantOperand, sigConstantOperand, opcode == INVOKESTATIC);
return referencedXMethod;
}
public FieldDescriptor getFieldDescriptorOperand() {
if (nameConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getFieldDescriptorOperand called but value not available");
if (referencedField == null) {
referencedField = DescriptorFactory.instance().getFieldDescriptor(classConstantOperand, nameConstantOperand, sigConstantOperand, opcode == GETSTATIC || opcode == PUTSTATIC);
}
return referencedField;
}
public @CheckForNull
XField getXFieldOperand() {
if (referencedXClass != null && referencedXField == null) referencedXField = referencedXClass.findField(nameConstantOperand, sigConstantOperand, opcode == GETSTATIC || opcode == PUTSTATIC);
return referencedXField;
}
/** If the current opcode has a class operand, get the associated class constant, dot-formatted */
public String getDottedClassConstantOperand() {
if (dottedClassConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getDottedClassConstantOperand called but value not available");
return dottedClassConstantOperand;
}
/** If the current opcode has a reference constant operand, get its string representation */
public String getRefConstantOperand() {
if (refConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getRefConstantOperand called but value not available");
if (refConstantOperand == null) {
StringBuilder ref = new StringBuilder(dottedClassConstantOperand.length() + nameConstantOperand.length() + dottedSigConstantOperand.length() + 5);
ref.append(dottedClassConstantOperand)
.append(".")
.append(nameConstantOperand)
.append(" : ")
.append(dottedSigConstantOperand);
refConstantOperand = ref.toString();
}
return refConstantOperand;
}
/** If the current opcode has a reference constant operand, get its name */
public String getNameConstantOperand() {
if (nameConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getNameConstantOperand called but value not available");
return nameConstantOperand;
}
/** If the current opcode has a reference constant operand, get its signature, dot-formatted */
@Deprecated
public String getDottedSigConstantOperand() {
if (dottedSigConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getDottedSigConstantOperand called but value not available");
return dottedSigConstantOperand;
}
/** If the current opcode has a reference constant operand, get its signature, slash-formatted */
public String getSigConstantOperand() {
if (sigConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getSigConstantOperand called but value not available");
return sigConstantOperand;
}
/**
* If the current opcode has a class constant operand, get the classname, slash-formatted.
*/
public @SlashedClassName String getClassConstantOperand() {
if (classConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getClassConstantOperand called but value not available");
return classConstantOperand;
}
/** If the current opcode has a string constant operand, get its name */
public String getStringConstantOperand() {
if (stringConstantOperand == NOT_AVAILABLE)
throw new IllegalStateException("getStringConstantOperand called but value not available");
return stringConstantOperand;
}
public Constant getConstantRefOperand() {
if (constantRefOperand == null)
throw new IllegalStateException("getConstantRefOperand called but value not available");
return constantRefOperand;
}
public boolean isRegisterLoad() {
return isRegisterLoad;
}
public boolean isRegisterStore() {
return isRegisterStore;
}
public int getRegisterOperand() {
if (registerOperand == -1)
throw new IllegalStateException("getRegisterOperand called but value not available");
return registerOperand;
}
public int getIntConstant() {
return intConstant;
}
public int getBranchOffset() {
if (branchOffset == INVALID_OFFSET)
throw new IllegalStateException("getBranchOffset called but value not available");
return branchOffset;
}
public int getBranchTarget() {
if (branchTarget == INVALID_OFFSET)
throw new IllegalStateException("getBranchTarget called but value not available");
return branchTarget;
}
public int getBranchFallThrough() {
if (branchFallThrough == INVALID_OFFSET)
throw new IllegalStateException("getBranchFallThrough called but value not available");
return branchFallThrough;
}
public int getDefaultSwitchOffset() {
if (defaultSwitchOffset == INVALID_OFFSET)
throw new IllegalStateException("getDefaultSwitchOffset called but value not available");
return defaultSwitchOffset;
}
public boolean getRefFieldIsStatic() {
return refFieldIsStatic;
}
public int getPC() {
return PC;
}
/**
* return previous opcode;
* @param offset 0 for current opcode, 1 for one before that, etc.
*/
public int getPrevOpcode(int offset) {
if (offset < 0) throw new IllegalArgumentException("offset ("+offset+") must be nonnegative");
if (offset >= prevOpcode.length || offset > sizePrevOpcodeBuffer)
return NOP;
int pos = currentPosInPrevOpcodeBuffer - offset;
if (pos < 0) pos += prevOpcode.length;
return prevOpcode[pos];
}
public boolean isWideOpcode() {
return opcodeIsWide;
}
/**
* Return whether or not given opcode is a branch instruction.
*
* @param opcode the opcode
* @return true if instruction is a branch, false if not
*/
public static boolean isBranch(int opcode) {
byte[] operands = MEANING_OF_OPERANDS[opcode];
return operands.length > 0 && operands[0] == M_BR;
}
/**
* Return whether or not given opcode is a switch instruction.
*
* @param opcode the opcode
* @return true if instruction is a switch, false if not
*/
public static boolean isSwitch(int opcode) {
return opcode == LOOKUPSWITCH || opcode == TABLESWITCH;
}
@SuppressWarnings("EI")
public int[] getSwitchOffsets() {
if (switchOffsets == null)
throw new IllegalStateException("getSwitchOffsets called but value not available");
return switchOffsets;
}
@SuppressWarnings("EI")
public int[] getSwitchLabels() {
if (switchLabels == null)
throw new IllegalStateException("getSwitchOffsets called but value not available");
return switchLabels;
}
private void resetState() {
dottedClassConstantOperand = classConstantOperand = nameConstantOperand = sigConstantOperand = dottedSigConstantOperand = stringConstantOperand = refConstantOperand = NOT_AVAILABLE;
refFieldIsStatic = false;
constantRefOperand = null;
registerOperand = -1;
isRegisterLoad = false;
isRegisterStore = false;
branchOffset = branchTarget = branchFallThrough = defaultSwitchOffset = INVALID_OFFSET;
switchOffsets = switchLabels = null;
referencedClass = null;
referencedXClass = null;
referencedMethod = null;
referencedXMethod = null;
referencedField = null;
referencedXField = null;
}
private static void sortByOffset(int[] switchOffsets, int[] switchLabels) {
int npairs = switchOffsets.length;
// Sort by offset
for (int j = 0; j < npairs; j++) {
int min = j;
for (int k = j + 1; k < npairs; k++)
if (switchOffsets[min] > switchOffsets[k])
min = k;
if (min > j) {
int tmp = switchOffsets[min];
switchOffsets[min] = switchOffsets[j];
switchOffsets[j] = tmp;
tmp = switchLabels[min];
switchLabels[min] = switchLabels[j];
switchLabels[j] = tmp;
}
}
}
public int getMaxPC() {
return codeBytes.length-1;
}
public int getCodeByte(int offset) {
return 0xff & codeBytes[offset];
}
public int getOpcode() {
return opcode;
}
public boolean atCatchBlock() {
for(CodeException e : getCode().getExceptionTable())
if (e.getHandlerPC() == getPC()) return true;
return false;
}
@Override
public void visit(Code obj) {
sizePrevOpcodeBuffer = 0;
currentPosInPrevOpcodeBuffer = prevOpcode.length-1;
int switchLow = 1000000;
int switchHigh = -1000000;
codeBytes = obj.getCode();
DataInputStream byteStream = new DataInputStream(new ByteArrayInputStream(codeBytes));
lineNumberTable = obj.getLineNumberTable();
try {
for (int i = 0; i < codeBytes.length;) {
resetState();
PC = i;
opcodeIsWide = false;
opcode = byteStream.readUnsignedByte();
sizePrevOpcodeBuffer++;
currentPosInPrevOpcodeBuffer++;
if (currentPosInPrevOpcodeBuffer >= prevOpcode.length)
currentPosInPrevOpcodeBuffer = 0;
prevOpcode[currentPosInPrevOpcodeBuffer] = opcode;
i++;
// System.out.println(OPCODE_NAMES[opCode]);
int byteStreamArgCount = NO_OF_OPERANDS[opcode];
if (byteStreamArgCount == UNPREDICTABLE) {
if (opcode == LOOKUPSWITCH) {
int pad = 4 - (i & 3);
if (pad == 4) pad = 0;
int count = pad;
while (count > 0)
count -= byteStream.skipBytes(count);
i += pad;
defaultSwitchOffset = byteStream.readInt();
branchOffset = defaultSwitchOffset;
branchTarget = branchOffset + PC;
i += 4;
int npairs = byteStream.readInt();
i += 4;
switchOffsets = new int[npairs];
switchLabels = new int[npairs];
for (int o = 0; o < npairs; o++) {
switchLabels[o] = byteStream.readInt();
switchOffsets[o] = byteStream.readInt();
i += 8;
}
sortByOffset(switchOffsets, switchLabels);
} else if (opcode == TABLESWITCH) {
int pad = 4 - (i & 3);
if (pad == 4) pad = 0;
int count = pad;
while (count > 0)
count -= byteStream.skipBytes(count);
i += pad;
defaultSwitchOffset = byteStream.readInt();
branchOffset = defaultSwitchOffset;
branchTarget = branchOffset + PC;
i += 4;
switchLow = byteStream.readInt();
i += 4;
switchHigh = byteStream.readInt();
i += 4;
int npairs = switchHigh - switchLow + 1;
switchOffsets = new int[npairs];
switchLabels = new int[npairs];
for (int o = 0; o < npairs; o++) {
switchLabels[o] = o + switchLow;
switchOffsets[o] = byteStream.readInt();
i += 4;
}
sortByOffset(switchOffsets, switchLabels);
} else if (opcode == WIDE) {
opcodeIsWide = true;
opcode = byteStream.readUnsignedByte();
i++;
switch (opcode) {
case ILOAD:
case FLOAD:
case ALOAD:
case LLOAD:
case DLOAD:
case ISTORE:
case FSTORE:
case ASTORE:
case LSTORE:
case DSTORE:
case RET:
registerOperand = byteStream.readUnsignedShort();
i += 2;
break;
case IINC:
registerOperand = byteStream.readUnsignedShort();
i += 2;
intConstant = byteStream.readShort();
i += 2;
break;
default:
throw new IllegalStateException("bad wide bytecode: " + OPCODE_NAMES[opcode]);
}
} else
throw new IllegalStateException("bad unpredicatable bytecode: " + OPCODE_NAMES[opcode]);
} else {
if (byteStreamArgCount < 0) throw new IllegalStateException("bad length for bytecode: " + OPCODE_NAMES[opcode]);
for (int k = 0; k < TYPE_OF_OPERANDS[opcode].length; k++) {
int v;
int t = TYPE_OF_OPERANDS[opcode][k];
int m = MEANING_OF_OPERANDS[opcode][k];
boolean unsigned = (m == M_CP || m == M_R || m == M_UINT);
switch (t) {
case T_BYTE:
if (unsigned)
v = byteStream.readUnsignedByte();
else
v = byteStream.readByte();
/*
System.out.print("Read byte " + v);
System.out.println(" with meaning" + m);
*/
i++;
break;
case T_SHORT:
if (unsigned)
v = byteStream.readUnsignedShort();
else
v = byteStream.readShort();
i += 2;
break;
case T_INT:
v = byteStream.readInt();
i += 4;
break;
default:
throw new IllegalStateException();
}
switch (m) {
case M_BR:
branchOffset = v;
branchTarget = v + PC;
branchFallThrough = i;
break;
case M_CP:
constantRefOperand = getConstantPool().getConstant(v);
if (constantRefOperand instanceof ConstantClass) {
ConstantClass clazz = (ConstantClass) constantRefOperand;
classConstantOperand = getStringFromIndex(clazz.getNameIndex());
dottedClassConstantOperand = replaceSlashesWithDots(classConstantOperand);
referencedClass = DescriptorFactory.createClassDescriptor(classConstantOperand);
try {
referencedXClass = Global.getAnalysisCache().getClassAnalysis(XClass.class, referencedClass);
} catch (CheckedAnalysisException e) {
referencedXClass = null;
}
}
else if (constantRefOperand instanceof ConstantInteger)
intConstant = ((ConstantInteger) constantRefOperand).getBytes();
else if (constantRefOperand instanceof ConstantLong)
longConstant = ((ConstantLong) constantRefOperand).getBytes();
else if (constantRefOperand instanceof ConstantFloat)
floatConstant = ((ConstantFloat) constantRefOperand).getBytes();
else if (constantRefOperand instanceof ConstantDouble)
doubleConstant = ((ConstantDouble) constantRefOperand).getBytes();
else if (constantRefOperand instanceof ConstantString) {
int s = ((ConstantString) constantRefOperand).getStringIndex();
stringConstantOperand = getStringFromIndex(s);
} else if (constantRefOperand instanceof ConstantCP) {
ConstantCP cp = (ConstantCP) constantRefOperand;
ConstantClass clazz
= (ConstantClass) getConstantPool().getConstant(cp.getClassIndex());
classConstantOperand = getStringFromIndex(clazz.getNameIndex());
dottedClassConstantOperand = replaceSlashesWithDots(classConstantOperand);
referencedClass = DescriptorFactory.createClassDescriptor(classConstantOperand);
try {
referencedXClass = Global.getAnalysisCache().getClassAnalysis(XClass.class, referencedClass);
} catch (CheckedAnalysisException e) {
referencedXClass = null;
}
ConstantNameAndType sig
= (ConstantNameAndType) getConstantPool().getConstant(cp.getNameAndTypeIndex());
nameConstantOperand = getStringFromIndex(sig.getNameIndex());
sigConstantOperand = getStringFromIndex(sig.getSignatureIndex());
dottedSigConstantOperand = replaceSlashesWithDots(sigConstantOperand);
refConstantOperand = null;
}
break;
case M_R:
registerOperand = v;
break;
case M_UINT:
case M_INT:
intConstant = v;
}
}
}
switch (opcode) {
case IINC:
isRegisterLoad = true;
isRegisterStore = true;
break;
case ILOAD_0:
case ILOAD_1:
case ILOAD_2:
case ILOAD_3:
registerOperand = opcode - ILOAD_0;
isRegisterLoad = true;
break;
case ALOAD_0:
case ALOAD_1:
case ALOAD_2:
case ALOAD_3:
registerOperand = opcode - ALOAD_0;
isRegisterLoad = true;
break;
case FLOAD_0:
case FLOAD_1:
case FLOAD_2:
case FLOAD_3:
registerOperand = opcode - FLOAD_0;
isRegisterLoad = true;
break;
case DLOAD_0:
case DLOAD_1:
case DLOAD_2:
case DLOAD_3:
registerOperand = opcode - DLOAD_0;
isRegisterLoad = true;
break;
case LLOAD_0:
case LLOAD_1:
case LLOAD_2:
case LLOAD_3:
registerOperand = opcode - LLOAD_0;
isRegisterLoad = true;
break;
case ILOAD:
case FLOAD:
case ALOAD:
case LLOAD:
case DLOAD:
isRegisterLoad = true;
break;
case ISTORE_0:
case ISTORE_1:
case ISTORE_2:
case ISTORE_3:
registerOperand = opcode - ISTORE_0;
isRegisterStore = true;
break;
case ASTORE_0:
case ASTORE_1:
case ASTORE_2:
case ASTORE_3:
registerOperand = opcode - ASTORE_0;
isRegisterStore = true;
break;
case FSTORE_0:
case FSTORE_1:
case FSTORE_2:
case FSTORE_3:
registerOperand = opcode - FSTORE_0;
isRegisterStore = true;
break;
case DSTORE_0:
case DSTORE_1:
case DSTORE_2:
case DSTORE_3:
registerOperand = opcode - DSTORE_0;
isRegisterStore = true;
break;
case LSTORE_0:
case LSTORE_1:
case LSTORE_2:
case LSTORE_3:
registerOperand = opcode - LSTORE_0;
isRegisterStore = true;
break;
case ISTORE:
case FSTORE:
case ASTORE:
case LSTORE:
case DSTORE:
isRegisterStore = true;
break;
}
switch (opcode) {
case ILOAD:
case FLOAD:
case ALOAD:
case LLOAD:
case DLOAD:
// registerKind = opcode - ILOAD;
break;
case ISTORE:
case FSTORE:
case ASTORE:
case LSTORE:
case DSTORE:
// registerKind = opcode - ISTORE;
break;
case RET:
// registerKind = R_REF;
break;
case GETSTATIC:
case PUTSTATIC:
refFieldIsStatic = true;
break;
case GETFIELD:
case PUTFIELD:
refFieldIsStatic = false;
break;
}
nextPC = i;
if (beforeOpcode(opcode))
sawOpcode(opcode);
afterOpcode(opcode);
if (opcode == TABLESWITCH) {
sawInt(switchLow);
sawInt(switchHigh);
int prevOffset = i - PC;
for (int o = 0; o <= switchHigh - switchLow; o++) {
sawBranchTo(switchOffsets[o] + PC);
sawOffset(switchOffsets[o] - prevOffset);
prevOffset = switchOffsets[o];
}
sawOffset(defaultSwitchOffset - prevOffset);
sawBranchTo(defaultSwitchOffset + PC);
} else if (opcode == LOOKUPSWITCH) {
sawInt(switchOffsets.length);
int prevOffset = i - PC;
for (int o = 0; o < switchOffsets.length; o++) {
sawBranchTo(switchOffsets[o] + PC);
prevOffset = switchOffsets[o];
sawInt(switchLabels[o]);
}
sawOffset(defaultSwitchOffset - prevOffset);
sawBranchTo(defaultSwitchOffset + PC);
} else
for (int k = 0; k < TYPE_OF_OPERANDS[opcode].length; k++) {
int m = MEANING_OF_OPERANDS[opcode][k];
switch (m) {
case M_BR:
sawBranchTo(branchOffset + PC);
if (branchOffset > 0)
sawOffset(branchOffset - (i - PC));
else
sawOffset(branchOffset);
break;
case M_CP:
if (constantRefOperand instanceof ConstantInteger)
sawInt(intConstant);
else if (constantRefOperand instanceof ConstantLong)
sawLong(longConstant);
else if (constantRefOperand instanceof ConstantFloat)
sawFloat(floatConstant);
else if (constantRefOperand instanceof ConstantDouble)
sawDouble(doubleConstant);
else if (constantRefOperand instanceof ConstantString)
sawString(stringConstantOperand);
else if (constantRefOperand instanceof ConstantFieldref)
sawField();
else if (constantRefOperand instanceof ConstantMethodref)
sawMethod();
else if (constantRefOperand instanceof ConstantInterfaceMethodref)
sawIMethod();
else if (constantRefOperand instanceof ConstantClass)
sawClass();
break;
case M_R:
sawRegister(registerOperand);
break;
case M_INT:
sawInt(intConstant);
break;
}
}
}
} catch (IOException e) {
AnalysisContext.logError("Error while dismantling bytecode", e);
assert false ;
}
try {
byteStream.close();
} catch (IOException e) {
assert false;
}
}
public void sawDouble(double seen) {
}
public void sawFloat(float seen) {
}
public void sawRegister(int r) {
}
public void sawInt(int seen) {
}
public void sawLong(long seen) {
}
public void sawBranchTo(int seen) {
}
public void sawOffset(int seen) {
}
/** return false if we should skip calling sawOpcode */
public boolean beforeOpcode(int seen) { return true; }
public void afterOpcode(int seen) {}
public void sawOpcode(int seen) {
}
public void sawString(String seen) {
}
public void sawField() {
}
public void sawMethod() {
}
public void sawIMethod() {
}
public void sawClass() {
}
static private NumberFormat formatter = NumberFormat.getIntegerInstance();
static {
formatter.setMinimumIntegerDigits(4);
formatter.setGroupingUsed(false);
}
public void printOpCode( int seen) {
System.out.print(" TestingGround: [" + formatter.format(getPC()) + "] " + OPCODE_NAMES[seen]);
if ((seen == INVOKEVIRTUAL) || (seen == INVOKESPECIAL) || (seen == INVOKEINTERFACE) || (seen == INVOKESTATIC))
System.out.print(" " + getClassConstantOperand() + "." + getNameConstantOperand() + " " + getSigConstantOperand());
else if (seen == LDC || seen == LDC_W || seen == LDC2_W) {
Constant c = getConstantRefOperand();
if (c instanceof ConstantString)
System.out.print(" \"" + getStringConstantOperand() + "\"");
else if (c instanceof ConstantClass)
System.out.print(" " + getClassConstantOperand());
else
System.out.print(" " + c);
} else if ((seen == ALOAD) || (seen == ASTORE))
System.out.print(" " + getRegisterOperand());
else if ((seen == GOTO) || (seen == GOTO_W)
|| (seen == IF_ACMPEQ) || (seen == IF_ACMPNE)
|| (seen == IF_ICMPEQ) || (seen == IF_ICMPGE)
|| (seen == IF_ICMPGT) || (seen == IF_ICMPLE)
|| (seen == IF_ICMPLT) || (seen == IF_ICMPNE)
|| (seen == IFEQ) || (seen == IFGE)
|| (seen == IFGT) || (seen == IFLE)
|| (seen == IFLT) || (seen == IFNE)
|| (seen == IFNONNULL) || (seen == IFNULL))
System.out.print(" " + getBranchTarget());
else if ((seen == NEW) || (seen == INSTANCEOF))
System.out.print(" " + getClassConstantOperand());
else if ((seen == TABLESWITCH) || (seen == LOOKUPSWITCH)) {
System.out.print(" [");
int switchPC = getPC();
int[] offsets = getSwitchOffsets();
for (int offset : offsets) {
System.out.print((switchPC + offset) + ",");
}
System.out.print((switchPC + getDefaultSwitchOffset()) + "]");
}
System.out.println();
}
/**
* @return Returns the nextPC.
*/
public int getNextPC() {
return nextPC;
}
public boolean isReturn(int opcode) {
switch(opcode) {
case IRETURN:
case ARETURN:
case LRETURN:
case DRETURN:
case FRETURN:
case RETURN:
return true;
default :
return false;
}
}
public static boolean areOppositeBranches(int opcode1, int opcode2) {
if (!isBranch(opcode1)) throw new IllegalArgumentException(OPCODE_NAMES[opcode1] + " isn't a branch");
if (!isBranch(opcode2)) throw new IllegalArgumentException(OPCODE_NAMES[opcode2] + " isn't a branch");
switch(opcode1) {
case IF_ACMPEQ:
case IF_ACMPNE:
case IF_ICMPEQ:
case IF_ICMPNE:
case IF_ICMPLT:
case IF_ICMPLE:
case IF_ICMPGT:
case IF_ICMPGE:
case IFNE:
case IFEQ:
case IFLT:
case IFLE:
case IFGT:
case IFGE:
return ((opcode1 +1) ^ 1) == opcode2+1;
case IFNONNULL:
return opcode2 == IFNULL;
case IFNULL:
return opcode2 == IFNONNULL;
default:
return false;
}
}
public boolean isRegisterStore(int opcode) {
switch(opcode) {
case ISTORE_0:
case ISTORE_1:
case ISTORE_2:
case ISTORE_3:
case ASTORE_0:
case ASTORE_1:
case ASTORE_2:
case ASTORE_3:
case FSTORE_0:
case FSTORE_1:
case FSTORE_2:
case FSTORE_3:
case DSTORE_0:
case DSTORE_1:
case DSTORE_2:
case DSTORE_3:
case LSTORE_0:
case LSTORE_1:
case LSTORE_2:
case LSTORE_3:
case ISTORE:
case FSTORE:
case ASTORE:
case LSTORE:
case DSTORE:
return true;
default:
return false;
}
}
}
The table below shows all metrics for DismantleBytecode.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 92.00 | Number of blocks | |
| BLOCK_COMMENT | 22.00 | Number of block comment lines | |
| COMMENTS | 67.00 | Comment lines | |
| COMMENT_DENSITY | 0.09 | Comment density | |
| COMPARISONS | 117.00 | Number of comparison operators | |
| CYCLOMATIC | 300.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 16.00 | Comments in declarations | |
| DOC_COMMENT | 35.00 | Number of javadoc comment lines | |
| ELOC | 744.00 | Effective lines of code | |
| EXEC_COMMENTS | 10.00 | Comments in executable code | |
| EXITS | 73.00 | Procedure exits | |
| FUNCTIONS | 58.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 116.51 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 114.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 1.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 1.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 4.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 60.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 1.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 2.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 1.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 5.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 1.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 7.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 10.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 2.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 2.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 1.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 1.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 9.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 5.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 42.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 1.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 17.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 1.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 5.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 2889.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 0.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 11.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 1.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 2.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 12.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 1005.00 | Number of lines in the source file | |
| LINE_COMMENT | 10.00 | Number of line comments | |
| LOC | 832.00 | Lines of code | |
| LOGICAL_LINES | 417.00 | Number of statements | |
| LOOPS | 11.00 | Number of loops | |
| NEST_DEPTH | 7.00 | Maximum nesting depth | |
| OPERANDS | 1583.00 | Number of operands | |
| OPERATORS | 3855.00 | Number of operators | |
| PARAMS | 24.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 5438.00 | Halstead program length | |
| PROGRAM_VOCAB | 491.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 90.00 | Number of return points from functions | |
| SIZE | 30616.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 428.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 63.00 | Number of unique operators | |
| WHITESPACE | 106.00 | Number of whitespace lines | |