Lexer (druid 1.2.6 API)

java.lang.Object
- com.alibaba.druid.sql.parser.Lexer

Direct Known Subclasses:

AdsLexer, AntsparkLexer, BlinkLexer, ClickhouseLexer, DB2Lexer, H2Lexer, HiveLexer, MySqlLexer, OdpsLexer, OracleLexer, PGLexer, PhoenixLexer, PrestoLexer, SQLServerLexer
```
public class Lexer
extends Object
```
Author:

wenshao [szujobs@hotmail.com]

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static interface Lexer.CommentHandler

static class Lexer.SavePoint

Nested Classes
Modifier and Type	Class and Description
`static interface`	`Lexer.CommentHandler`
`static class`	`Lexer.SavePoint`

Field Summary

Fields
Modifier and Type Field and Description

String text

Fields
Modifier and Type	Field and Description
`String`	`text`

Constructor Summary

Constructors
Constructor and Description
`Lexer(char[] input, int inputLength, boolean skipComment)`
`Lexer(String input)`
`Lexer(String input, boolean skipComment)`
`Lexer(String input, Lexer.CommentHandler commentHandler)`
`Lexer(String input, Lexer.CommentHandler commentHandler, DbType dbType)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`addSymbol()`
`void`	`arraycopy(int srcPos, char[] dest, int destPos, int length)`
`int`	`bp()`
`char`	`charAt(int index)`
`void`	`computeRowAndColumn()`
`void`	`config(SQLParserFeature feature, boolean state)`
`char`	`current()`
`BigDecimal`	`decimalValue()`
`int`	`getCommentCount()`
`Lexer.CommentHandler`	`getCommentHandler()`
`List<String>`	`getComments()`
`DbType`	`getDbType()`
`Keywords`	`getKeywords()`
`int`	`getLine()`
`int`	`getPosColumn()`
`int`	`getPosLine()`
`String`	`getSource()`
`TimeZone`	`getTimeZone()`
`boolean`	`hasComment()`
`long`	`hash_lower()`
`String`	`hexString()`
`boolean`	`identifierEquals(long hash_lower)`
`boolean`	`identifierEquals(String text)`
`String`	`info()`
`Number`	`integerValue()`
`boolean`	`isAllowComment()`
`boolean`	`isDigit(char ch)`
`boolean`	`isEnabled(SQLParserFeature feature)`
`boolean`	`isEndOfComment()`
`boolean`	`isEOF()`
`boolean`	`isKeepComments()`
`boolean`	`isNegativeIntegerValue()`
`Lexer.SavePoint`	`mark()`
`void`	`nextPath()`
`void`	`nextToken()`
`void`	`nextTokenAlias()`
`void`	`nextTokenBy()`
`void`	`nextTokenComma()`
`void`	`nextTokenCommaValue()`
`void`	`nextTokenEq()`
`void`	`nextTokenIdent()`
`void`	`nextTokenLParen()`
`void`	`nextTokenNotOrNull()`
`void`	`nextTokenValue()`
`int`	`nextVarIndex()`
`SQLNumberExpr`	`numberExpr()`
`SQLNumberExpr`	`numberExpr(boolean negate)`
`SQLNumberExpr`	`numberExpr(SQLObject parent)`
`String`	`numberString()`
`static String`	`parameterize(String sql, DbType dbType)`
`int`	`pos()` Return the current token's position: a 0-based offset from beginning of the raw input stream (before unicode translation)
`List<String>`	`readAndResetComments()`
`void`	`reset()`
`void`	`reset(int pos)`
`void`	`reset(int mark, char markChar, Token token)`
`void`	`reset(Lexer.SavePoint savePoint)`
`void`	`scanComment()`
`void`	`scanHexaDecimal()`
`void`	`scanIdentifier()`
`void`	`scanNumber()`
`void`	`scanSharp()`
`SQLType`	`scanSQLType()`
`SQLType`	`scanSQLTypeV2()`
`void`	`scanVariable()`
`void`	`setAllowComment(boolean allowComment)`
`void`	`setCommentHandler(Lexer.CommentHandler commentHandler)`
`void`	`setKeepComments(boolean keepComments)`
`void`	`setTimeZone(TimeZone timeZone)`
`void`	`setToken(Token token)`
`void`	`skipToEOF()`
`String`	`stringVal()` The value of a literal token, recorded as a string.
`char[]`	`sub_chars(int offset, int count)`
`String`	`subString(int offset, int count)`
`Token`	`token()` Return the current token, set by nextToken().

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- text
```
public final String text
```

Constructor Detail

Lexer
```
public Lexer(String input)
```

Lexer

public Lexer(String input,
             Lexer.CommentHandler commentHandler)

Lexer

public Lexer(String input,
             Lexer.CommentHandler commentHandler,
             DbType dbType)

Lexer

public Lexer(String input,
             boolean skipComment)

Lexer

public Lexer(char[] input,
             int inputLength,
             boolean skipComment)

Method Detail

isKeepComments
```
public boolean isKeepComments()
```

setKeepComments

public void setKeepComments(boolean keepComments)

getCommentHandler

public Lexer.CommentHandler getCommentHandler()

setCommentHandler

public void setCommentHandler(Lexer.CommentHandler commentHandler)

charAt
```
public final char charAt(int index)
```

addSymbol
```
public final String addSymbol()
```

subString

public final String subString(int offset,
                              int count)

sub_chars

public final char[] sub_chars(int offset,
                              int count)

arraycopy

public void arraycopy(int srcPos,
                      char[] dest,
                      int destPos,
                      int length)

isAllowComment
```
public boolean isAllowComment()
```

setAllowComment

public void setAllowComment(boolean allowComment)

nextVarIndex
```
public int nextVarIndex()
```

getKeywords
```
public Keywords getKeywords()
```

mark
```
public Lexer.SavePoint mark()
```

reset

public void reset(Lexer.SavePoint savePoint)

reset
```
public void reset()
```

reset
```
public void reset(int pos)
```

isEOF
```
public boolean isEOF()
```

token
```
public final Token token()
```
Return the current token, set by nextToken().

setToken
```
public void setToken(Token token)
```

getDbType
```
public final DbType getDbType()
```

info
```
public String info()
```

nextTokenComma
```
public final void nextTokenComma()
```

nextTokenCommaValue

public final void nextTokenCommaValue()

nextTokenEq
```
public final void nextTokenEq()
```

nextTokenLParen
```
public final void nextTokenLParen()
```

nextTokenValue
```
public final void nextTokenValue()
```

nextTokenBy
```
public final void nextTokenBy()
```

nextTokenNotOrNull

public final void nextTokenNotOrNull()

nextTokenIdent
```
public final void nextTokenIdent()
```

scanSQLType
```
public final SQLType scanSQLType()
```

scanSQLTypeV2
```
public final SQLType scanSQLTypeV2()
```

nextTokenAlias
```
public final void nextTokenAlias()
```

nextPath
```
public final void nextPath()
```

nextToken
```
public final void nextToken()
```

scanSharp
```
public void scanSharp()
```

scanVariable
```
public void scanVariable()
```

scanComment
```
public void scanComment()
```

scanIdentifier
```
public void scanIdentifier()
```

scanNumber
```
public void scanNumber()
```

scanHexaDecimal
```
public void scanHexaDecimal()
```

hexString
```
public String hexString()
```

isDigit

public final boolean isDigit(char ch)

pos
```
public final int pos()
```
Return the current token's position: a 0-based offset from beginning of the raw input stream (before unicode translation)

stringVal
```
public final String stringVal()
```
The value of a literal token, recorded as a string. For integers, leading 0x and 'l' suffixes are suppressed.

identifierEquals

public final boolean identifierEquals(String text)

identifierEquals

public final boolean identifierEquals(long hash_lower)

hash_lower
```
public final long hash_lower()
```

readAndResetComments

public final List<String> readAndResetComments()

isNegativeIntegerValue

public final boolean isNegativeIntegerValue()

integerValue
```
public final Number integerValue()
```

bp
```
public int bp()
```

current
```
public char current()
```

reset

public void reset(int mark,
                  char markChar,
                  Token token)

numberString
```
public final String numberString()
```

decimalValue
```
public BigDecimal decimalValue()
```

numberExpr
```
public SQLNumberExpr numberExpr()
```

numberExpr

public SQLNumberExpr numberExpr(SQLObject parent)

numberExpr

public SQLNumberExpr numberExpr(boolean negate)

hasComment
```
public boolean hasComment()
```

getCommentCount
```
public int getCommentCount()
```

skipToEOF
```
public void skipToEOF()
```

isEndOfComment
```
public boolean isEndOfComment()
```

getComments
```
public List<String> getComments()
```

getLine
```
public int getLine()
```

computeRowAndColumn
```
public void computeRowAndColumn()
```

getPosLine
```
public int getPosLine()
```

getPosColumn
```
public int getPosColumn()
```

config

public void config(SQLParserFeature feature,
                   boolean state)

getTimeZone
```
public TimeZone getTimeZone()
```

setTimeZone

public void setTimeZone(TimeZone timeZone)

isEnabled

public final boolean isEnabled(SQLParserFeature feature)

parameterize

public static String parameterize(String sql,
                                  DbType dbType)

getSource
```
public String getSource()
```

Class Lexer

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

text

Constructor Detail

Lexer

Lexer

Lexer

Lexer

Lexer

Method Detail

isKeepComments

setKeepComments

getCommentHandler

setCommentHandler

charAt

addSymbol

subString

sub_chars

arraycopy

isAllowComment

setAllowComment

nextVarIndex

getKeywords

mark

reset

reset

reset

isEOF

token

setToken

getDbType

info

nextTokenComma

nextTokenCommaValue

nextTokenEq

nextTokenLParen

nextTokenValue

nextTokenBy

nextTokenNotOrNull

nextTokenIdent

scanSQLType

scanSQLTypeV2

nextTokenAlias

nextPath

nextToken

scanSharp

scanVariable

scanComment

scanIdentifier

scanNumber

scanHexaDecimal

hexString

isDigit

pos

stringVal

identifierEquals

identifierEquals

hash_lower

readAndResetComments

isNegativeIntegerValue

integerValue

bp

current

reset

numberString

decimalValue

numberExpr

numberExpr

numberExpr

hasComment

getCommentCount

skipToEOF

isEndOfComment

getComments

getLine