gudusoft.gsqlparser.pp.utils

Class SourceTokenOperator

Object

gudusoft.gsqlparser.pp.utils.SourceTokenOperator

public class SourceTokenOperator
extends Object

the helper class used for operating the source token

Author:

zhoujun

Constructor Summary

Constructors

Constructor and Description
SourceTokenOperator()

Method Summary

Modifier and Type	Method and Description
static void	addAfter(GFmtOpt opt, TSourceToken targetToken, TSourceToken needAddToken)
static void	addBefore(GFmtOpt opt, TSourceToken targetToken, TSourceToken needAddToken) insert the source token before the target source token
static void	combineWhitespace(TSourceTokenList list, int startPos, int endPos) combine all the white spaces into a single white space
static TSourceToken	createNoFormatFlagToken()
static TSourceToken	createReturnSourceToken()
static TSourceToken	createWhitespaceSourceToken(int length) create the white space source token
static int	curColumnNumberVT(TSourceToken token) calcaulate the text length from a given position to the line start.
static int	curColumnNumberVT(TSourceTokenList list, int pos) calcaulate the text length from a given position to the line start.
static int	curIndentLenVT(TSourceToken token) calculate the current indent length VT is the abbr for "virtual token" (which contains before tokens, after tokens and replace token)
static int	curIndentLenVT(TSourceTokenList list, int pos) calculate the current indent length VT is the abbr for "virtual token" (which contains before tokens, after tokens and replace token)
static void	removeAllBeforeTokenVT(GFmtOpt opt, TSourceToken targetToken) remove all source token in the before source token list VT is the abbr for "virtual token" (that this method will operates before tokens, after tokens and replace token)
static void	removeThisToken(TSourceToken token)
static void	removeWhitespaceAndReturn(GFmtOpt opt, TSourceTokenList list, int start, int end) remove the white space and the return token
static void	removeWhitespaceAndReturnFormBeforeAndAfter(GFmtOpt opt, TSourceToken token) remove the white space and the return token before this token and after this token
static int	removeWhitespaceAndReturnFromEnd(GFmtOpt opt, TSourceToken token) remove the white space and the return token from the end
static int	removeWhitespaceAndReturnFromEnd(GFmtOpt opt, TSourceTokenList list, int end) remove the white space and the return token from the end
static int	removeWhitespaceAndReturnFromStart(GFmtOpt opt, TSourceTokenList list, int startPos) remove the white space and the return token from the end
static int	removeWhitespaceBackward(GFmtOpt opt, TSourceTokenList list, int end)
static int	textLengthVT(TSourceTokenList list, int start, int end) calculate the text length for all virtual token (which are call before tokens, after tokens and replace token)

Methods inherited from class Object

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

Constructor Detail

SourceTokenOperator

public SourceTokenOperator()

Method Detail

removeWhitespaceBackward

public static int removeWhitespaceBackward(GFmtOpt opt,
                                           TSourceTokenList list,
                                           int end)

removeWhitespaceAndReturnFromEnd

public static int removeWhitespaceAndReturnFromEnd(GFmtOpt opt,
                                                   TSourceTokenList list,
                                                   int end)

remove the white space and the return token from the end

Parameters:

list -

end -

Returns:

the pos which is not white space and return token in the source token list

removeWhitespaceAndReturnFromEnd

public static int removeWhitespaceAndReturnFromEnd(GFmtOpt opt,
                                                   TSourceToken token)

remove the white space and the return token from the end

Parameters:

token -

Returns:

the pos which is not whitespace and return token in the source token list

removeWhitespaceAndReturnFormBeforeAndAfter

public static void removeWhitespaceAndReturnFormBeforeAndAfter(GFmtOpt opt,
                                                               TSourceToken token)

remove the white space and the return token before this token and after this token

Parameters:

opt -

token -

removeWhitespaceAndReturn

public static void removeWhitespaceAndReturn(GFmtOpt opt,
                                             TSourceTokenList list,
                                             int start,
                                             int end)

remove the white space and the return token

Parameters:

list -

start -

end -

removeWhitespaceAndReturnFromStart

public static int removeWhitespaceAndReturnFromStart(GFmtOpt opt,
                                                     TSourceTokenList list,
                                                     int startPos)

remove the white space and the return token from the end

Parameters:

list -

textLengthVT

public static int textLengthVT(TSourceTokenList list,
                               int start,
                               int end)

calculate the text length for all virtual token (which are call before tokens, after tokens and replace token)

Parameters:

list -

start -

end -

Returns:

curColumnNumberVT

public static int curColumnNumberVT(TSourceTokenList list,
                                    int pos)

calcaulate the text length from a given position to the line start. VT is the abbr for "virtual token" (which contains before tokens, after tokens and replace token)

Parameters:

list -

pos -

Returns:

curColumnNumberVT

public static int curColumnNumberVT(TSourceToken token)

calcaulate the text length from a given position to the line start. VT is the abbr for "virtual token" (which contains before tokens, after tokens and replace token)

Parameters:

token -

Returns:

curIndentLenVT

public static int curIndentLenVT(TSourceTokenList list,
                                 int pos)

calculate the current indent length VT is the abbr for "virtual token" (which contains before tokens, after tokens and replace token)

Parameters:

list -

pos -

Returns:

curIndentLenVT

public static int curIndentLenVT(TSourceToken token)

calculate the current indent length VT is the abbr for "virtual token" (which contains before tokens, after tokens and replace token)

Parameters:

token -

Returns:

createWhitespaceSourceToken

public static TSourceToken createWhitespaceSourceToken(int length)

create the white space source token

Parameters:

length -

Returns:

createNoFormatFlagToken

public static TSourceToken createNoFormatFlagToken()

createReturnSourceToken

public static TSourceToken createReturnSourceToken()

combineWhitespace

public static void combineWhitespace(TSourceTokenList list,
                                     int startPos,
                                     int endPos)

combine all the white spaces into a single white space

Parameters:

list -

startPos -

endPos -

addBefore

public static void addBefore(GFmtOpt opt,
                             TSourceToken targetToken,
                             TSourceToken needAddToken)

insert the source token before the target source token

Parameters:

targetToken -

needAddToken -

addAfter

public static void addAfter(GFmtOpt opt,
                            TSourceToken targetToken,
                            TSourceToken needAddToken)

removeAllBeforeTokenVT

public static void removeAllBeforeTokenVT(GFmtOpt opt,
                                          TSourceToken targetToken)

remove all source token in the before source token list VT is the abbr for "virtual token" (that this method will operates before tokens, after tokens and replace token)

Parameters:

targetToken -

removeThisToken

public static void removeThisToken(TSourceToken token)