ExpressionHandler.java
| Index Score | ||
|---|---|---|
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com.puppycrawl.tools.checkstyle.checks.indentation |
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Checkstyle |
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 | |
|---|---|---|
| LINE_COMMENT | Number of line comments |  |
| DECL_COMMENTS | Comments in declarations | |
| COMMENTS | Comment lines | |
| DOC_COMMENT | Number of javadoc comment lines | |
| EXEC_COMMENTS | Comments in executable code | |
| PARAMS | Number of formal parameter declarations | |
| SIZE | Size of the file in bytes | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LINES | Number of lines in the source file | |
| LOOPS | Number of loops | |
| CYCLOMATIC | Cyclomatic complexity | |
| FUNCTIONS | Number of function declarations | |
| EXITS | Procedure exits | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| COMPARISONS | Number of comparison operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| LOC | Lines of code | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| BLOCKS | Number of blocks | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| RETURNS | Number of return points from functions | |
| OPERATORS | Number of operators | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2007 Oliver Burn
//
// 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 com.puppycrawl.tools.checkstyle.checks.indentation;
import java.util.Arrays;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
import com.puppycrawl.tools.checkstyle.api.Utils;
/**
* Abstract base class for all handlers.
*
* @author jrichard
*/
public abstract class ExpressionHandler
{
/**
* The instance of <code>IndentationCheck</code> using this handler.
*/
private IndentationCheck mIndentCheck;
/** the AST which is handled by this handler */
private DetailAST mMainAst;
/** name used during output to user */
private String mTypeName;
/** containing AST handler */
private ExpressionHandler mParent;
/** indentation amount for this handler */
private IndentLevel mLevel;
/**
* Construct an instance of this handler with the given indentation check,
* name, abstract syntax tree, and parent handler.
*
* @param aIndentCheck the indentation check
* @param aTypeName the name of the handler
* @param aExpr the abstract syntax tree
* @param aParent the parent handler
*/
public ExpressionHandler(IndentationCheck aIndentCheck,
String aTypeName, DetailAST aExpr, ExpressionHandler aParent)
{
mIndentCheck = aIndentCheck;
mTypeName = aTypeName;
mMainAst = aExpr;
mParent = aParent;
}
/**
* Get the indentation amount for this handler. For performance reasons,
* this value is cached. The first time this method is called, the
* indentation amount is computed and stored. On further calls, the stored
* value is returned.
*
* @return the expected indentation amount
*/
public final IndentLevel getLevel()
{
if (mLevel == null) {
mLevel = getLevelImpl();
}
return mLevel;
}
/**
* Compute the indentation amount for this handler.
*
* @return the expected indentation amount
*/
protected IndentLevel getLevelImpl()
{
return mParent.suggestedChildLevel(this);
}
/**
* Indentation level suggested for a child element. Children don't have
* to respect this, but most do.
*
* @param aChild child AST (so suggestion level can differ based on child
* type)
*
* @return suggested indentation for child
*/
public IndentLevel suggestedChildLevel(ExpressionHandler aChild)
{
return new IndentLevel(getLevel(), getBasicOffset());
}
/**
* Log an indentation error.
*
* @param aAst the expression that caused the error
* @param aSubtypeName the type of the expression
* @param aActualLevel the actual indent level of the expression
*/
protected final void logError(DetailAST aAst, String aSubtypeName,
int aActualLevel)
{
logError(aAst, aSubtypeName, aActualLevel, getLevel());
}
/**
* Log an indentation error.
*
* @param aAst the expression that caused the error
* @param aSubtypeName the type of the expression
* @param aActualLevel the actual indent level of the expression
* @param aExpectedLevel the expected indent level of the expression
*/
protected final void logError(DetailAST aAst, String aSubtypeName,
int aActualLevel, IndentLevel aExpectedLevel)
{
final String typeStr =
("".equals(aSubtypeName) ? "" : (" " + aSubtypeName));
final Object[] args = new Object[] {
mTypeName + typeStr,
new Integer(aActualLevel),
aExpectedLevel,
};
mIndentCheck.indentationLog(aAst.getLineNo(),
"indentation.error",
args);
}
/**
* Log child indentation error.
*
* @param aLine the expression that caused the error
* @param aActualLevel the actual indent level of the expression
* @param aExpectedLevel the expected indent level of the expression
*/
private void logChildError(int aLine,
int aActualLevel,
IndentLevel aExpectedLevel)
{
final Object[] args = new Object[] {
mTypeName,
new Integer(aActualLevel),
aExpectedLevel,
};
mIndentCheck.indentationLog(aLine,
"indentation.child.error",
args);
}
/**
* Determines if the given expression is at the start of a line.
*
* @param aAst the expression to check
*
* @return true if it is, false otherwise
*/
protected final boolean startsLine(DetailAST aAst)
{
return getLineStart(aAst) == expandedTabsColumnNo(aAst);
}
/**
* Determines if two expressions are on the same line.
*
* @param aAst1 the first expression
* @param aAst2 the second expression
*
* @return true if they are, false otherwise
*/
static boolean areOnSameLine(DetailAST aAst1, DetailAST aAst2)
{
return (aAst1 != null) && (aAst2 != null)
&& (aAst1.getLineNo() == aAst2.getLineNo());
}
/**
* Searchs in given sub-tree (including given node) for the token
* which represents first symbol for this sub-tree in file.
* @param aAST a root of sub-tree in which the search shoul be performed.
* @return a token which occurs first in the file.
*/
static DetailAST getFirstToken(DetailAST aAST)
{
DetailAST first = aAST;
DetailAST child = (DetailAST) aAST.getFirstChild();
while (child != null) {
final DetailAST toTest = getFirstToken(child);
if ((toTest.getLineNo() < first.getLineNo())
|| ((toTest.getLineNo() == first.getLineNo())
&& (toTest.getColumnNo() < first.getColumnNo())))
{
first = toTest;
}
child = (DetailAST) child.getNextSibling();
}
return first;
}
/**
* Get the start of the line for the given expression.
*
* @param aAst the expression to find the start of the line for
*
* @return the start of the line for the given expression
*/
protected final int getLineStart(DetailAST aAst)
{
final String line = mIndentCheck.getLines()[aAst.getLineNo() - 1];
return getLineStart(line);
}
// TODO: this whole checking of consecuitive/expression line indents is
// smelling pretty bad... and is in serious need of pruning. But, I
// want to finish the invalid tests before I start messing around with
// it.
/**
* Check the indentation of consecutive lines for the expression we are
* handling.
*
* @param aStartLine the first line to check
* @param aEndLine the last line to check
* @param aIndentLevel the required indent level
*/
protected final void checkLinesIndent(int aStartLine, int aEndLine,
IndentLevel aIndentLevel)
{
// check first line
checkSingleLine(aStartLine, aIndentLevel);
// check following lines
aIndentLevel = new IndentLevel(aIndentLevel, getBasicOffset());
for (int i = aStartLine + 1; i <= aEndLine; i++) {
checkSingleLine(i, aIndentLevel);
}
}
/**
* @return true if indentation should be increased after
* fisrt line in checkLinesIndent()
* false otherwise
*/
protected boolean shouldIncreaseIndent()
{
return true;
}
/**
* Check the indentation for a set of lines.
*
* @param aLines the set of lines to check
* @param aIndentLevel the indentation level
* @param aFirstLineMatches whether or not the first line has to match
* @param aFirstLine firstline of whole expression
*/
private void checkLinesIndent(LineSet aLines,
IndentLevel aIndentLevel,
boolean aFirstLineMatches,
int aFirstLine)
{
if (aLines.isEmpty()) {
return;
}
// check first line
final int startLine = aLines.firstLine();
final int endLine = aLines.lastLine();
final int startCol = aLines.firstLineCol();
final int realStartCol =
getLineStart(mIndentCheck.getLines()[startLine - 1]);
if (realStartCol == startCol) {
checkSingleLine(startLine, startCol, aIndentLevel,
aFirstLineMatches);
}
// if first line starts the line, following lines are indented
// one level; but if the first line of this expression is
// nested with the previous expression (which is assumed if it
// doesn't start the line) then don't indent more, the first
// indentation is absorbed by the nesting
// TODO: shouldIncreaseIndent() is a hack, should be removed
// after complete rewriting of checkExpressionSubtree()
if (aFirstLineMatches
|| ((aFirstLine > mMainAst.getLineNo()) && shouldIncreaseIndent()))
{
aIndentLevel = new IndentLevel(aIndentLevel, getBasicOffset());
}
// check following lines
for (int i = startLine + 1; i <= endLine; i++) {
final Integer col = aLines.getStartColumn(new Integer(i));
// startCol could be null if this line didn't have an
// expression that was required to be checked (it could be
// checked by a child expression)
if (col != null) {
checkSingleLine(i, col.intValue(), aIndentLevel, false);
}
}
}
/**
* Check the indent level for a single line.
*
* @param aLineNum the line number to check
* @param aIndentLevel the required indent level
*/
private void checkSingleLine(int aLineNum, IndentLevel aIndentLevel)
{
final String line = mIndentCheck.getLines()[aLineNum - 1];
final int start = getLineStart(line);
if (aIndentLevel.gt(start)) {
logChildError(aLineNum, start, aIndentLevel);
}
}
/**
* Check the indentation for a single line.
*
* @param aLineNum the number of the line to check
* @param aColNum the column number we are starting at
* @param aIndentLevel the indentation level
* @param aMustMatch whether or not the indentation level must match
*/
private void checkSingleLine(int aLineNum, int aColNum,
IndentLevel aIndentLevel, boolean aMustMatch)
{
final String line = mIndentCheck.getLines()[aLineNum - 1];
final int start = getLineStart(line);
// if must match is set, it is an error if the line start is not
// at the correct indention level; otherwise, it is an only an
// error if this statement starts the line and it is less than
// the correct indentation level
if (aMustMatch ? !aIndentLevel.accept(start)
: (aColNum == start) && aIndentLevel.gt(start))
{
logChildError(aLineNum, start, aIndentLevel);
}
}
/**
* Get the start of the specified line.
*
* @param aLine the specified line number
*
* @return the start of the specified line
*/
protected final int getLineStart(String aLine)
{
for (int start = 0; start < aLine.length(); start++) {
final char c = aLine.charAt(start);
if (!Character.isWhitespace(c)) {
return Utils.lengthExpandedTabs(
aLine, start, mIndentCheck.getIndentationTabWidth());
}
}
return 0;
}
// TODO: allowNesting either shouldn't be allowed with
// firstLineMatches, or I should change the firstLineMatches logic
// so it doesn't match if the first line is nested
/**
* Check the indent level of the children of the specified parent
* expression.
*
* @param aParent the parent whose children we are checking
* @param aTokenTypes the token types to check
* @param aStartLevel the starting indent level
* @param aFirstLineMatches whether or not the first line needs to match
* @param aAllowNesting whether or not nested children are allowed
*/
protected final void checkChildren(DetailAST aParent,
int[] aTokenTypes,
IndentLevel aStartLevel,
boolean aFirstLineMatches,
boolean aAllowNesting)
{
Arrays.sort(aTokenTypes);
for (DetailAST child = (DetailAST) aParent.getFirstChild();
child != null;
child = (DetailAST) child.getNextSibling())
{
if (Arrays.binarySearch(aTokenTypes, child.getType()) >= 0) {
checkExpressionSubtree(child, aStartLevel,
aFirstLineMatches, aAllowNesting);
}
}
}
/**
* Check the indentation level for an expression subtree.
*
* @param aTree the expression subtree to check
* @param aLevel the indentation level
* @param aFirstLineMatches whether or not the first line has to match
* @param aAllowNesting whether or not subtree nesting is allowed
*/
protected final void checkExpressionSubtree(
DetailAST aTree,
IndentLevel aLevel,
boolean aFirstLineMatches,
boolean aAllowNesting
)
{
final LineSet subtreeLines = new LineSet();
final int firstLine = getFirstLine(Integer.MAX_VALUE, aTree);
if (aFirstLineMatches && !aAllowNesting) {
subtreeLines.addLineAndCol(new Integer(firstLine),
getLineStart(mIndentCheck.getLines()[firstLine - 1]));
}
findSubtreeLines(subtreeLines, aTree, aAllowNesting);
checkLinesIndent(subtreeLines, aLevel, aFirstLineMatches, firstLine);
}
/**
* Get the first line for a given expression.
*
* @param aStartLine the line we are starting from
* @param aTree the expression to find the first line for
*
* @return the first line of the expression
*/
protected final int getFirstLine(int aStartLine, DetailAST aTree)
{
// find line for this node
// TODO: getLineNo should probably not return < 0, but it is for
// the interface methods... I should ask about this
final int currLine = aTree.getLineNo();
if (currLine < aStartLine) {
aStartLine = currLine;
}
// check children
for (DetailAST node = (DetailAST) aTree.getFirstChild();
node != null;
node = (DetailAST) node.getNextSibling())
{
aStartLine = getFirstLine(aStartLine, node);
}
return aStartLine;
}
/**
* Get the column number for the start of a given expression, expanding
* tabs out into spaces in the process.
*
* @param aAST the expression to find the start of
*
* @return the column number for the start of the expression
*/
protected final int expandedTabsColumnNo(DetailAST aAST)
{
final String line =
mIndentCheck.getLines()[aAST.getLineNo() - 1];
return Utils.lengthExpandedTabs(line, aAST.getColumnNo(),
mIndentCheck.getIndentationTabWidth());
}
/**
* Find the set of lines for a given subtree.
*
* @param aLines the set of lines to add to
* @param aTree the subtree to examine
* @param aAllowNesting whether or not to allow nested subtrees
*/
protected final void findSubtreeLines(LineSet aLines, DetailAST aTree,
boolean aAllowNesting)
{
// find line for this node
// TODO: getLineNo should probably not return < 0, but it is for
// the interface methods... I should ask about this
if (getIndentCheck().getHandlerFactory().isHandledType(aTree.getType())
|| (aTree.getLineNo() < 0))
{
return;
}
// TODO: the problem with this is that not all tree tokens actually
// have the right column number -- I should get a list of these
// and verify that checking nesting this way won't cause problems
// if (aAllowNesting && aTree.getColumnNo() != getLineStart(aTree)) {
// return;
// }
final Integer lineNum = new Integer(aTree.getLineNo());
final Integer colNum = aLines.getStartColumn(lineNum);
final int thisLineColumn = expandedTabsColumnNo(aTree);
if ((colNum == null) || (thisLineColumn < colNum.intValue())) {
aLines.addLineAndCol(lineNum, thisLineColumn);
}
// check children
for (DetailAST node = (DetailAST) aTree.getFirstChild();
node != null;
node = (DetailAST) node.getNextSibling())
{
findSubtreeLines(aLines, node, aAllowNesting);
}
}
/**
* Check the indentation level of modifiers.
*/
protected final void checkModifiers()
{
final DetailAST modifiers =
mMainAst.findFirstToken(TokenTypes.MODIFIERS);
for (DetailAST modifier = (DetailAST) modifiers.getFirstChild();
modifier != null;
modifier = (DetailAST) modifier.getNextSibling())
{
/*
if (!areOnSameLine(modifier, prevExpr)) {
continue;
}
*/
if (startsLine(modifier)
&& !getLevel().accept(expandedTabsColumnNo(modifier)))
{
logError(modifier, "modifier",
expandedTabsColumnNo(modifier));
}
}
}
/**
* Check the indentation of the expression we are handling.
*/
public abstract void checkIndentation();
/**
* Accessor for the IndentCheck attribute.
*
* @return the IndentCheck attribute
*/
protected final IndentationCheck getIndentCheck()
{
return mIndentCheck;
}
/**
* Accessor for the MainAst attribute.
*
* @return the MainAst attribute
*/
protected final DetailAST getMainAst()
{
return mMainAst;
}
/**
* Accessor for the Parent attribute.
*
* @return the Parent attribute
*/
protected final ExpressionHandler getParent()
{
return mParent;
}
/**
* A shortcut for <code>IndentationCheck</code> property.
* @return value of basicOffset property of <code>IndentationCheck</code>
*/
protected final int getBasicOffset()
{
return getIndentCheck().getBasicOffset();
}
/**
* A shortcut for <code>IndentationCheck</code> property.
* @return value of braceAdjustment property
* of <code>IndentationCheck</code>
*/
protected final int getBraceAdjustement()
{
return getIndentCheck().getBraceAdjustement();
}
/**
* Check the indentation of the right parenthesis.
* @param aRparen parenthesis to check
* @param aLparen left parenthesis associated with aRparen
*/
protected final void checkRParen(DetailAST aLparen, DetailAST aRparen)
{
// no paren - no check :)
if (aRparen == null) {
return;
}
// the rcurly can either be at the correct indentation,
// or not first on the line ...
final int rparenLevel = expandedTabsColumnNo(aRparen);
if (getLevel().accept(rparenLevel) || !startsLine(aRparen)) {
return;
}
// or has <lparen level> + 1 indentation
final int lparenLevel = expandedTabsColumnNo(aLparen);
if (rparenLevel == (lparenLevel + 1)) {
return;
}
logError(aRparen, "rparen", rparenLevel);
}
/**
* Check the indentation of the left parenthesis.
* @param aLparen parenthesis to check
*/
protected final void checkLParen(final DetailAST aLparen)
{
// the rcurly can either be at the correct indentation, or on the
// same line as the lcurly
if ((aLparen == null)
|| getLevel().accept(expandedTabsColumnNo(aLparen))
|| !startsLine(aLparen))
{
return;
}
logError(aLparen, "lparen", expandedTabsColumnNo(aLparen));
}
}
The table below shows all metrics for ExpressionHandler.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 57.00 | Number of blocks | |
| BLOCK_COMMENT | 5.00 | Number of block comment lines | |
| COMMENTS | 283.00 | Comment lines | |
| COMMENT_DENSITY | 1.37 | Comment density | |
| COMPARISONS | 44.00 | Number of comparison operators | |
| CYCLOMATIC | 71.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 57.00 | Comments in declarations | |
| DOC_COMMENT | 215.00 | Number of javadoc comment lines | |
| ELOC | 207.00 | Effective lines of code | |
| EXEC_COMMENTS | 21.00 | Comments in executable code | |
| EXITS | 49.00 | Procedure exits | |
| FUNCTIONS | 31.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 0.81 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 89.00 | 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 | 0.00 | 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 | 1.00 | JAVA0016 Abstract class contains non-protected 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 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 0.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | 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 | 0.00 | 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 | 0.00 | 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 | 0.00 | 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 | 1.00 | 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 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 0.00 | 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 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 0.00 | 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 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 0.00 | 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 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | 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 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | 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 | 1.00 | 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 | 0.00 | 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 | 0.00 | 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 | 0.00 | 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 | |
| JAVA0289 | 1.00 | null | |
| LINES | 656.00 | Number of lines in the source file | |
| LINE_COMMENT | 63.00 | Number of line comments | |
| LOC | 307.00 | Lines of code | |
| LOGICAL_LINES | 105.00 | Number of statements | |
| LOOPS | 8.00 | Number of loops | |
| NEST_DEPTH | 3.00 | Maximum nesting depth | |
| OPERANDS | 589.00 | Number of operands | |
| OPERATORS | 1180.00 | Number of operators | |
| PARAMS | 52.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1769.00 | Halstead program length | |
| PROGRAM_VOCAB | 229.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 37.00 | Number of return points from functions | |
| SIZE | 22041.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 183.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 46.00 | Number of unique operators | |
| WHITESPACE | 66.00 | Number of whitespace lines | |