com.puppycrawl.tools.checkstyle.api

Class FileContents

java.lang.Object

com.puppycrawl.tools.checkstyle.api.FileContents

All Implemented Interfaces:

CommentListener

public final class FileContents
extends java.lang.Object
implements CommentListener

Represents the contents of a file.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.lang.Integer,java.util.List<TextBlock>>	clangComments Map of the C comments indexed on the first line of the comment to a list of comments on that line.
private java.util.Map<java.lang.Integer,TextBlock>	cppComments Map of the C++ comments indexed on the first line of the comment.
private java.util.Map<java.lang.Integer,TextBlock>	javadocComments Map of the Javadoc comments indexed on the last line of the comment.
private static java.util.regex.Pattern	MATCH_SINGLELINE_COMMENT Compiled regexp to match a single-line comment line.
private static java.lang.String	MATCH_SINGLELINE_COMMENT_PAT The pattern to match a single line comment containing only the comment itself -- no code.
private FileText	text The text.

Constructor Summary

Constructors

Constructor and Description
FileContents(FileText text) Creates a new FileContents instance.

Method Summary

Modifier and Type	Method and Description
private java.lang.String[]	extractBlockComment(int startLineNo, int startColNo, int endLineNo, int endColNo) Returns the specified block comment as a String array.
java.util.Map<java.lang.Integer,java.util.List<TextBlock>>	getBlockComments() Returns a map of all block comments.
java.lang.String	getFileName() Gets the name of the file.
TextBlock	getJavadocBefore(int lineNoBefore) Returns the Javadoc comment before the specified line.
java.lang.String	getLine(int index) Get the line from text of the file.
java.lang.String[]	getLines() Gets the lines in the file.
java.util.Map<java.lang.Integer,TextBlock>	getSingleLineComments() Returns a map of all the single line comments.
FileText	getText() Get the full text of the file.
private boolean	hasIntersectionWithBlockComment(int startLineNo, int startColNo, int endLineNo, int endColNo) Checks if the specified position intersects with a block comment.
boolean	hasIntersectionWithComment(int startLineNo, int startColNo, int endLineNo, int endColNo) Checks if the specified position intersects with a comment.
private boolean	hasIntersectionWithSingleLineComment(int startLineNo, int startColNo, int endLineNo, int endColNo) Checks if the specified position intersects with a single line comment.
boolean	inPackageInfo() Checks if the current file is a package-info.java file.
private java.lang.String	line(int lineNo) Get a single line.
boolean	lineIsBlank(int lineNo) Checks if the specified line is blank.
boolean	lineIsComment(int lineNo) Checks if the specified line is a single-line comment without code.
void	reportBlockComment(int startLineNo, int startColNo, int endLineNo, int endColNo) Report the location of a block comment.
void	reportBlockComment(java.lang.String type, int startLineNo, int startColNo, int endLineNo, int endColNo) Report the location of a block comment that can span multiple lines.
void	reportSingleLineComment(int startLineNo, int startColNo) Report the location of a single line comment.
void	reportSingleLineComment(java.lang.String type, int startLineNo, int startColNo) Report the location of a single line comment that extends from the given point to the end of the line.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MATCH_SINGLELINE_COMMENT_PAT

private static final java.lang.String MATCH_SINGLELINE_COMMENT_PAT

The pattern to match a single line comment containing only the comment itself -- no code.

See Also:

Constant Field Values

MATCH_SINGLELINE_COMMENT

private static final java.util.regex.Pattern MATCH_SINGLELINE_COMMENT

Compiled regexp to match a single-line comment line.

text

private final FileText text

The text.

javadocComments

private final java.util.Map<java.lang.Integer,TextBlock> javadocComments

Map of the Javadoc comments indexed on the last line of the comment. The hack is it assumes that there is only one Javadoc comment per line.

cppComments

private final java.util.Map<java.lang.Integer,TextBlock> cppComments

Map of the C++ comments indexed on the first line of the comment.

clangComments

private final java.util.Map<java.lang.Integer,java.util.List<TextBlock>> clangComments

Map of the C comments indexed on the first line of the comment to a list of comments on that line.

Constructor Detail

FileContents

public FileContents(FileText text)

Creates a new FileContents instance.

Parameters:

text - the contents of the file

Method Detail

getText

public FileText getText()

Get the full text of the file.

Returns:

an object containing the full text of the file

getLines

public java.lang.String[] getLines()

Gets the lines in the file.

Returns:

the lines in the file

getLine

public java.lang.String getLine(int index)

Get the line from text of the file.

Parameters:

index - index of the line

Returns:

line from text of the file

getFileName

public java.lang.String getFileName()

Gets the name of the file.

Returns:

the name of the file

reportSingleLineComment

public void reportSingleLineComment(java.lang.String type,
                                    int startLineNo,
                                    int startColNo)

Description copied from interface: CommentListener

Report the location of a single line comment that extends from the given point to the end of the line. The type of comment is identified by a String whose value depends on the language being parsed, but would typically be the delimiter for the comment.

Specified by:

reportSingleLineComment in interface CommentListener

Parameters:

type - an identifier for what type of comment it is.

startLineNo - the starting line number

startColNo - the starting column number

reportSingleLineComment

public void reportSingleLineComment(int startLineNo,
                                    int startColNo)

Report the location of a single line comment.

Parameters:

startLineNo - the starting line number

startColNo - the starting column number

reportBlockComment

public void reportBlockComment(java.lang.String type,
                               int startLineNo,
                               int startColNo,
                               int endLineNo,
                               int endColNo)

Description copied from interface: CommentListener

Report the location of a block comment that can span multiple lines. The type of comment is identified by a String whose value depends on the language being parsed, but would typically be the delimiter for the comment.

Specified by:

reportBlockComment in interface CommentListener

Parameters:

type - an identifier for what type of comment it is.

startLineNo - the starting line number

startColNo - the starting column number

endLineNo - the ending line number

endColNo - the ending column number

reportBlockComment

public void reportBlockComment(int startLineNo,
                               int startColNo,
                               int endLineNo,
                               int endColNo)

Report the location of a block comment.

Parameters:

startLineNo - the starting line number

startColNo - the starting column number

endLineNo - the ending line number

endColNo - the ending column number

extractBlockComment

private java.lang.String[] extractBlockComment(int startLineNo,
                                               int startColNo,
                                               int endLineNo,
                                               int endColNo)

Returns the specified block comment as a String array.

Parameters:

startLineNo - the starting line number

startColNo - the starting column number

endLineNo - the ending line number

endColNo - the ending column number

Returns:

block comment as an array

line

private java.lang.String line(int lineNo)

Get a single line. For internal use only, as getText().get(lineNo) is just as suitable for external use and avoids method duplication.

Parameters:

lineNo - the number of the line to get

Returns:

the corresponding line, without terminator

Throws:

java.lang.IndexOutOfBoundsException - if lineNo is invalid

getJavadocBefore

public TextBlock getJavadocBefore(int lineNoBefore)

Returns the Javadoc comment before the specified line. A return value of null means there is no such comment.

Parameters:

lineNoBefore - the line number to check before

Returns:

the Javadoc comment, or null if none

lineIsBlank

public boolean lineIsBlank(int lineNo)

Checks if the specified line is blank.

Parameters:

lineNo - the line number to check

Returns:

if the specified line consists only of tabs and spaces.

lineIsComment

public boolean lineIsComment(int lineNo)

Checks if the specified line is a single-line comment without code.

Parameters:

lineNo - the line number to check

Returns:

if the specified line consists of only a single line comment without code.

hasIntersectionWithComment

public boolean hasIntersectionWithComment(int startLineNo,
                                          int startColNo,
                                          int endLineNo,
                                          int endColNo)

Checks if the specified position intersects with a comment.

Parameters:

startLineNo - the starting line number

startColNo - the starting column number

endLineNo - the ending line number

endColNo - the ending column number

Returns:

true if the positions intersects with a comment.

hasIntersectionWithBlockComment

private boolean hasIntersectionWithBlockComment(int startLineNo,
                                                int startColNo,
                                                int endLineNo,
                                                int endColNo)

Checks if the specified position intersects with a block comment.

Parameters:

startLineNo - the starting line number

startColNo - the starting column number

endLineNo - the ending line number

endColNo - the ending column number

Returns:

true if the positions intersects with a block comment.

hasIntersectionWithSingleLineComment

private boolean hasIntersectionWithSingleLineComment(int startLineNo,
                                                     int startColNo,
                                                     int endLineNo,
                                                     int endColNo)

Checks if the specified position intersects with a single line comment.

Parameters:

startLineNo - the starting line number

startColNo - the starting column number

endLineNo - the ending line number

endColNo - the ending column number

Returns:

true if the positions intersects with a single line comment.

getSingleLineComments

public java.util.Map<java.lang.Integer,TextBlock> getSingleLineComments()

Returns a map of all the single line comments. The key is a line number, the value is the comment TextBlock at the line.

Returns:

the Map of comments

getBlockComments

public java.util.Map<java.lang.Integer,java.util.List<TextBlock>> getBlockComments()

Returns a map of all block comments. The key is the line number, the value is a List of block comment TextBlocks that start at that line.

Returns:

the map of comments

inPackageInfo

public boolean inPackageInfo()

Checks if the current file is a package-info.java file.

Returns:

true if the package file.