edu.rice.cs.drjava.model.definitions.reducedmodel
Class Gap

java.lang.Object
  edu.rice.cs.drjava.model.definitions.reducedmodel.ReducedToken
      edu.rice.cs.drjava.model.definitions.reducedmodel.Gap

All Implemented Interfaces:

ReducedModelStates

 class Gap
extends ReducedToken

A subclass of ReducedToken that represents sequences of non-special characters.

Version:

$Id: Gap.java 5175 2010-01-20 08:46:32Z mgricken $

Field Summary

private int

_size

Fields inherited from interface edu.rice.cs.drjava.model.definitions.reducedmodel.ReducedModelStates

FREE, INSIDE_BLOCK_COMMENT, INSIDE_DOUBLE_QUOTE, INSIDE_LINE_COMMENT, INSIDE_SINGLE_QUOTE, STUTTER

Constructor Summary

Gap(int size, ReducedModelState state)
Creates a new Gap.

Method Summary

void	flip() Blows up.
int	getSize() Gets the size of this gap.
String	getType() Gets the token type.
void	grow(int delta) Increases the size of the gap.
boolean	isBlockCommentEnd() Determines that this is not the end of a block comment.
boolean	isBlockCommentStart() Determines that this is not the start of a block comment.
boolean	isClosed() Determines that this is not closed.
boolean	isClosedBrace() Determines that this is not a closed brace.
boolean	isDoubleEscape() Determines that this is not a double escape.
boolean	isDoubleEscapeSequence() Determines that this is not a double escape sequence.
boolean	isDoubleQuote() Determines that this is not a ".
boolean	isEscapedDoubleQuote() Determines that this is not a \".
boolean	isEscapedSingleQuote() Determines that this is not a \'.
boolean	isGap() Determines that this is a gap.
boolean	isLineComment() Determines that this is not a line comment.
boolean	isMatch(Brace other) Determines that this is not a match.
boolean	isMatchable() Determines that this ReducedToken is not matchable (one of "{", "}", "(", ")", "[", "]")
boolean	isMultipleCharBrace() Determines that this is not a multi-char brace.
boolean	isNewline() Determines that this is not a newline.
boolean	isOpen() Determines that this is not open.
boolean	isOpenBrace() Determines that this is not an open brace.
boolean	isSingleQuote() Determines that this is not a '.
boolean	isSlash() Determines that this is not a /.
boolean	isStar() Determines that this is not a *.
void	setType(String type) Blows up.
void	shrink(int delta) Decreases the size of the gap.
String	toString() Converts a Brace to a String.

Methods inherited from class edu.rice.cs.drjava.model.definitions.reducedmodel.ReducedToken

getHighlightState, getState, isCommented, isCommentStart, isQuoted, isShadowed, setState

Methods inherited from class java.lang.Object

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

Field Detail

_size

private volatile int _size

Constructor Detail

Gap

Gap(int size,
    ReducedModelState state)

Creates a new Gap.

Parameters:

size - the size of the gap

state - the state of the reduced model

Method Detail

getSize

public int getSize()

Gets the size of this gap.

Specified by:

getSize in class ReducedToken

Returns:

_size

getType

public String getType()

Gets the token type.

Specified by:

getType in class ReducedToken

Returns:

the empty string

setType

public void setType(String type)

Blows up. The type of a Gap cannot be set.

Specified by:

setType in class ReducedToken

Parameters:

type - the type to set to

Throws:

RuntimeException - always

flip

public void flip()

Blows up. A Gap cannot be flipped.

Specified by:

flip in class ReducedToken

Throws:

RuntimeException - always

grow

public void grow(int delta)

Increases the size of the gap.

Specified by:

grow in class ReducedToken

Parameters:

delta - the amount by which the gap is augmented.

shrink

public void shrink(int delta)

Decreases the size of the gap.

Specified by:

shrink in class ReducedToken

Parameters:

delta - the amount by which the gap is diminished.

toString

public String toString()

Converts a Brace to a String. Used for debugging.

Overrides:

toString in class Object

Returns:

the String representation of the Gap

isMultipleCharBrace

public boolean isMultipleCharBrace()

Determines that this is not a multi-char brace.

Specified by:

isMultipleCharBrace in class ReducedToken

Returns:

false

isGap

public boolean isGap()

Determines that this is a gap.

Specified by:

isGap in class ReducedToken

Returns:

true

isLineComment

public boolean isLineComment()

Determines that this is not a line comment.

Specified by:

isLineComment in class ReducedToken

Returns:

false

isBlockCommentStart

public boolean isBlockCommentStart()

Determines that this is not the start of a block comment.

Specified by:

isBlockCommentStart in class ReducedToken

Returns:

false

isBlockCommentEnd

public boolean isBlockCommentEnd()

Determines that this is not the end of a block comment.

Specified by:

isBlockCommentEnd in class ReducedToken

Returns:

false

isNewline

public boolean isNewline()

Determines that this is not a newline.

Specified by:

isNewline in class ReducedToken

Returns:

false

isSlash

public boolean isSlash()

Determines that this is not a /.

Specified by:

isSlash in class ReducedToken

Returns:

false

isStar

public boolean isStar()

Determines that this is not a *.

Specified by:

isStar in class ReducedToken

Returns:

false

isDoubleQuote

public boolean isDoubleQuote()

Determines that this is not a ".

Specified by:

isDoubleQuote in class ReducedToken

Returns:

false

isSingleQuote

public boolean isSingleQuote()

Determines that this is not a '.

Specified by:

isSingleQuote in class ReducedToken

Returns:

false

isDoubleEscapeSequence

public boolean isDoubleEscapeSequence()

Determines that this is not a double escape sequence.

Specified by:

isDoubleEscapeSequence in class ReducedToken

Returns:

false

isDoubleEscape

public boolean isDoubleEscape()

Determines that this is not a double escape.

Specified by:

isDoubleEscape in class ReducedToken

Returns:

false

isEscapedSingleQuote

public boolean isEscapedSingleQuote()

Determines that this is not a \'.

Specified by:

isEscapedSingleQuote in class ReducedToken

Returns:

false

isEscapedDoubleQuote

public boolean isEscapedDoubleQuote()

Determines that this is not a \".

Specified by:

isEscapedDoubleQuote in class ReducedToken

Returns:

false

isOpen

public boolean isOpen()

Determines that this is not open.

Specified by:

isOpen in class ReducedToken

Returns:

false

isClosed

public boolean isClosed()

Determines that this is not closed.

Specified by:

isClosed in class ReducedToken

Returns:

boolean

isMatch

public boolean isMatch(Brace other)

Determines that this is not a match.

Specified by:

isMatch in class ReducedToken

Parameters:

other - the token to compare to

Returns:

false

isMatchable

public boolean isMatchable()

Determines that this ReducedToken is not matchable (one of "{", "}", "(", ")", "[", "]")

Specified by:

isMatchable in class ReducedToken

isOpenBrace

public boolean isOpenBrace()

Determines that this is not an open brace.

Specified by:

isOpenBrace in class ReducedToken

Returns:

boolean

isClosedBrace

public boolean isClosedBrace()

Determines that this is not a closed brace.

Specified by:

isClosedBrace in class ReducedToken

Returns:

boolean