Package org.variantsync.diffdetective.variation.diff.parse

Class LogicalLine

java.lang.Object

org.variantsync.diffdetective.variation.diff.parse.LogicalLine

class LogicalLine
extends Object

A logical line consisting of multiple physical lines of a text file joined by line continuations. The concept of a logical line is used by the C11 standard to refer to one source code line of a source file after all line continuations have been eliminated. Essentially a logical line is a string matched by the regex ([^\n]|\\\n)* where \n represents the platform dependent line delimiter. In contrast, a physical line is matched by the regex [^\n]*.

Author:

Benjamin Moosherr

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	inComment
private boolean	isContinued
private static final Pattern	LINE_COMMENT
private List<DiffLinesLabel.Line>	lines
private DiffLineNumber	startLineNumber

Constructor Summary

Constructors

Constructor	Description
LogicalLine()	Constructs an empty logical line.

Method Summary

Modifier and Type	Method	Description
void	consume(String line, DiffLineNumber lineNumber)	Adds the physical line line with the line number lineNumber to this logical line.
List<DiffLinesLabel.Line>	getLines()	Returns all physical lines consume(java.lang.String,org.variantsync.diffdetective.diff.text.DiffLineNumber)d for the current logical line.
DiffLineNumber	getStartLineNumber()	Returns the line number of the first consume(java.lang.String,org.variantsync.diffdetective.diff.text.DiffLineNumber)d physical line of the current physical line.
boolean	hasStarted()	Returns true iff at least one physical line was consume(java.lang.String,org.variantsync.diffdetective.diff.text.DiffLineNumber)d.
boolean	isComplete()	Returns true iff the current logical is complete and the next physical line belongs to a new logical line.
void	reset()	Starts a new, empty logical line.
String	toString()	Returns this line without line continuations.

Methods inherited from class java.lang.Object

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

Field Details

lines

private List<DiffLinesLabel.Line> lines

isContinued

private boolean isContinued

inComment

private boolean inComment

startLineNumber

private DiffLineNumber startLineNumber

LINE_COMMENT

private static final Pattern LINE_COMMENT

Constructor Details

LogicalLine

public LogicalLine()

Constructs an empty logical line.

Method Details

reset

public void reset()

Starts a new, empty logical line. This especially ensures hasStarted() == false and isComplete() == false.

consume

public void consume(String line,
 DiffLineNumber lineNumber)

Adds the physical line line with the line number lineNumber to this logical line. This must not be called while isComplete() returns true. There must be no new line inside of line.

hasStarted

public boolean hasStarted()

Returns true iff at least one physical line was consume(java.lang.String,org.variantsync.diffdetective.diff.text.DiffLineNumber)d.

isComplete

public boolean isComplete()

Returns true iff the current logical is complete and the next physical line belongs to a new logical line.

getStartLineNumber

public DiffLineNumber getStartLineNumber()

Returns the line number of the first consume(java.lang.String,org.variantsync.diffdetective.diff.text.DiffLineNumber)d physical line of the current physical line.

getLines

public List<DiffLinesLabel.Line> getLines()

Returns all physical lines consume(java.lang.String,org.variantsync.diffdetective.diff.text.DiffLineNumber)d for the current logical line. The backslashes of line continuations are still part of the strings.

toString

public String toString()

Returns this line without line continuations.

Overrides:

toString in class Object