gudusoft.gsqlparser.pp.utils

Class SourceTokenSearcher

Object

gudusoft.gsqlparser.pp.utils.SourceTokenSearcher

public class SourceTokenSearcher
extends Object

Constructor Summary

Constructors

Constructor and Description
SourceTokenSearcher()

Method Summary

Modifier and Type	Method and Description
static TSourceToken	backforwardSearch(TSourceToken token, int backsearchSize, String text) backward search the source token
static TSourceToken	backforwardSearchNotWhitespaceAndReturnToken(TSourceToken endToken, int backforwardSearchSize, String text)
static TSourceToken	backforwardSearchSolid(TSourceToken token, int solidSteps, String text) Search backward from token for the token whose text is text, counting only solid tokens: whitespace, line breaks and comments do not consume a step.
static TSourceToken	firstNotWhitespaceAndReturnToken(TSourceTokenList list, int startPos, int endPos) get first token which is not whitespace and return token
static TSourceToken	firstSelectedToken(TSourceTokenList list, int startPos, int endPos, String text)
static TSourceToken	firstSelectNotWhitespaceAndReturnToken(TSourceTokenList list, int startPos, String text) forward search the token which is the first not whitespace or return token, and its value is a fixed text
static TSourceToken	forwardSearch(TSourceToken token, int forwardSearchSize, String text) forward search the source token
static TSourceToken	forwardSearchSolid(TSourceToken token, int solidSteps, String text) Forward twin of backforwardSearchSolid(gudusoft.gsqlparser.TSourceToken, int, java.lang.String).
static int	indexOf(TSourceTokenList list, int startPos, int endPos, ETokenType type) search the source token in the source token list from the top
static int	indexOf(TSourceTokenList list, int startPos, int endPos, String text) search the source token in the source token list from the top
static int	indexOf(TSourceTokenList list, int startPos, String text) search the source token in the source token list from the top
static boolean	isNewLineToken(TSourceToken token)
static boolean	isSimpleComment(TSourceToken token)
static int	lastIndexOf(TSourceTokenList list, int startPos, int endPos, String text) search the source token in the source token list from the end
static int	lastIndexOf(TSourceTokenList list, int endPos, String text) search the source token in the source token list from the end
static TSourceToken	lastNotWhitespaceAndReturnToken(TSourceTokenList list, int endPos) get last token which is not whitespace and return token
static TSourceToken	lastNotWhitespaceAndReturnToken(TSourceTokenList list, int startPos, int endPos) get last token which is not whitespace and return token
static TSourceToken	lastSelectedNotWhitespaceAndReturnToken(TSourceTokenList list, int endPos, String text) backward search the token which is the first not whitespace or return token, and its value is a fixed text
static TSourceToken	lastSelectedNotWhitespaceAndReturnToken(TSourceToken token, String text) backward search the token which is the first not whitespace or return token, and its value is a fixed text
static TSourceToken	lastSelectedToken(TSourceTokenList list, int startPos, int endPos, String text)

Methods inherited from class Object

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

Constructor Detail

SourceTokenSearcher

public SourceTokenSearcher()

Method Detail

indexOf

public static int indexOf(TSourceTokenList list,
                          int startPos,
                          int endPos,
                          String text)

search the source token in the source token list from the top

Parameters:

list -

startPos -

endPos -

text -

Returns:

position

indexOf

public static int indexOf(TSourceTokenList list,
                          int startPos,
                          int endPos,
                          ETokenType type)

search the source token in the source token list from the top

Parameters:

list -

startPos -

endPos -

type -

Returns:

indexOf

public static int indexOf(TSourceTokenList list,
                          int startPos,
                          String text)

search the source token in the source token list from the top

Parameters:

list -

startPos -

text -

Returns:

backforwardSearch

public static TSourceToken backforwardSearch(TSourceToken token,
                                             int backsearchSize,
                                             String text)

backward search the source token

Parameters:

backsearchSize -

text -

Returns:

forwardSearch

public static TSourceToken forwardSearch(TSourceToken token,
                                         int forwardSearchSize,
                                         String text)

forward search the source token

Parameters:

token -

forwardSearchSize -

text -

Returns:

lastIndexOf

public static int lastIndexOf(TSourceTokenList list,
                              int startPos,
                              int endPos,
                              String text)

search the source token in the source token list from the end

Parameters:

list -

startPos -

endPos -

text -

Returns:

position

lastIndexOf

public static int lastIndexOf(TSourceTokenList list,
                              int endPos,
                              String text)

search the source token in the source token list from the end

Parameters:

list -

endPos -

text -

Returns:

lastNotWhitespaceAndReturnToken

public static TSourceToken lastNotWhitespaceAndReturnToken(TSourceTokenList list,
                                                           int startPos,
                                                           int endPos)

get last token which is not whitespace and return token

Parameters:

list -

startPos -

endPos -

Returns:

lastNotWhitespaceAndReturnToken

public static TSourceToken lastNotWhitespaceAndReturnToken(TSourceTokenList list,
                                                           int endPos)

get last token which is not whitespace and return token

Parameters:

list -

endPos -

Returns:

lastSelectedNotWhitespaceAndReturnToken

public static TSourceToken lastSelectedNotWhitespaceAndReturnToken(TSourceTokenList list,
                                                                   int endPos,
                                                                   String text)

backward search the token which is the first not whitespace or return token, and its value is a fixed text

Parameters:

list -

endPos - the fixed value

Returns:

firstNotWhitespaceAndReturnToken

public static TSourceToken firstNotWhitespaceAndReturnToken(TSourceTokenList list,
                                                            int startPos,
                                                            int endPos)

get first token which is not whitespace and return token

Parameters:

list -

startPos -

endPos -

Returns:

firstSelectNotWhitespaceAndReturnToken

public static TSourceToken firstSelectNotWhitespaceAndReturnToken(TSourceTokenList list,
                                                                  int startPos,
                                                                  String text)

forward search the token which is the first not whitespace or return token, and its value is a fixed text

Parameters:

list -

startPos -

text -

Returns:

lastSelectedNotWhitespaceAndReturnToken

public static TSourceToken lastSelectedNotWhitespaceAndReturnToken(TSourceToken token,
                                                                   String text)

backward search the token which is the first not whitespace or return token, and its value is a fixed text

Parameters:

token -

text -

Returns:

isNewLineToken

public static boolean isNewLineToken(TSourceToken token)

isSimpleComment

public static boolean isSimpleComment(TSourceToken token)

backforwardSearchSolid

public static TSourceToken backforwardSearchSolid(TSourceToken token,
                                                  int solidSteps,
                                                  String text)

Search backward from token for the token whose text is text, counting only solid tokens: whitespace, line breaks and comments do not consume a step. backforwardSearch(gudusoft.gsqlparser.TSourceToken, int, java.lang.String) counts every token, so a comment sitting between the searched keyword and its anchor pushed the keyword out of the window and the caller received null (NullPointerException in CTEProcessor and AppendLineAfterInsertTableNameProcessor on real-world scripts).

forwardSearchSolid

public static TSourceToken forwardSearchSolid(TSourceToken token,
                                              int solidSteps,
                                              String text)

Forward twin of backforwardSearchSolid(gudusoft.gsqlparser.TSourceToken, int, java.lang.String).

backforwardSearchNotWhitespaceAndReturnToken

public static TSourceToken backforwardSearchNotWhitespaceAndReturnToken(TSourceToken endToken,
                                                                        int backforwardSearchSize,
                                                                        String text)

lastSelectedToken

public static TSourceToken lastSelectedToken(TSourceTokenList list,
                                             int startPos,
                                             int endPos,
                                             String text)

firstSelectedToken

public static TSourceToken firstSelectedToken(TSourceTokenList list,
                                              int startPos,
                                              int endPos,
                                              String text)