Lexer (druid 1.2.6.2 API)

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

直接已知子类:

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

wenshao [szujobs@hotmail.com]

嵌套类概要

嵌套类
限定符和类型类和说明

static interface Lexer.CommentHandler

static class Lexer.SavePoint

嵌套类
限定符和类型	类和说明
`static interface`	`Lexer.CommentHandler`
`static class`	`Lexer.SavePoint`

字段概要

字段
限定符和类型	字段和说明
`protected char[]`	`buf`
`protected int`	`bufPos`
`protected char`	`ch`
`protected int`	`commentCount`
`protected Lexer.CommentHandler`	`commentHandler`
`protected List<String>`	`comments`
`protected DbType`	`dbType`
`protected boolean`	`endOfComment`
`protected int`	`features`
`protected long`	`hash`
`protected long`	`hash_lower`
`protected boolean`	`keepComments`
`protected boolean`	`keepSourceLocation`
`protected Keywords`	`keywords`
`protected int`	`line`
`protected int`	`lines`
`protected int`	`mark`
`protected boolean`	`numberExp`
`protected int`	`numberSale`
`protected boolean`	`optimizedForParameterized`
`protected int`	`pos`
`protected int`	`posColumn`
`protected int`	`posLine`
`protected boolean`	`skipComment`
`protected int`	`startPos`
`protected String`	`stringVal`
`protected static SymbolTable`	`symbols_l2`
`String`	`text`
`protected TimeZone`	`timeZone`
`protected Token`	`token`

构造器概要

构造器
构造器和说明
`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)`

方法概要

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`protected void`	`addComment(String comment)`
`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()`
`protected void`	`initBuff(int size)`
`Number`	`integerValue()`
`boolean`	`isAllowComment()`
`boolean`	`isDigit(char ch)`
`protected static boolean`	`isDigit2(char ch)`
`boolean`	`isEnabled(SQLParserFeature feature)`
`boolean`	`isEndOfComment()`
`boolean`	`isEOF()`
`boolean`	`isKeepComments()`
`boolean`	`isNegativeIntegerValue()`
`protected boolean`	`isSafeComment(String comment)`
`protected void`	`lexError(String key, Object... args)` Report an error at the given position using the provided arguments.
`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)
`protected void`	`putChar(char ch)` Append a character to sbuf.
`List<String>`	`readAndResetComments()`
`void`	`reset()`
`void`	`reset(int pos)`
`void`	`reset(int mark, char markChar, Token token)`
`void`	`reset(Lexer.SavePoint savePoint)`
`protected void`	`scanAlias()`
`protected void`	`scanChar()`
`void`	`scanComment()`
`void`	`scanHexaDecimal()`
`protected void`	`scanHiveComment()`
`void`	`scanIdentifier()`
`protected void`	`scanLBracket()`
`void`	`scanNumber()`
`void`	`scanSharp()`
`SQLType`	`scanSQLType()`
`SQLType`	`scanSQLTypeV2()`
`protected void`	`scanString()`
`protected void`	`scanString2_d()`
`protected void`	`scanString2()`
`protected void`	`scanVariable_at()`
`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().
`protected void`	`unscan()`

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

symbols_l2

protected static SymbolTable symbols_l2

features
```
protected int features
```

timeZone
```
protected TimeZone timeZone
```

text
```
public final String text
```

pos
```
protected int pos
```

mark
```
protected int mark
```

numberSale
```
protected int numberSale
```

numberExp
```
protected boolean numberExp
```

ch
```
protected char ch
```

buf
```
protected char[] buf
```

bufPos
```
protected int bufPos
```

token
```
protected Token token
```

keywords
```
protected Keywords keywords
```

stringVal
```
protected String stringVal
```

hash_lower
```
protected long hash_lower
```

hash
```
protected long hash
```

commentCount
```
protected int commentCount
```

comments
```
protected List<String> comments
```

skipComment
```
protected boolean skipComment
```

commentHandler

protected Lexer.CommentHandler commentHandler

endOfComment
```
protected boolean endOfComment
```

keepComments
```
protected boolean keepComments
```

line
```
protected int line
```

lines
```
protected int lines
```

dbType
```
protected DbType dbType
```

optimizedForParameterized

protected boolean optimizedForParameterized

keepSourceLocation
```
protected boolean keepSourceLocation
```

startPos
```
protected int startPos
```

posLine
```
protected int posLine
```

posColumn
```
protected int posColumn
```

构造器详细资料

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)

方法详细资料

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)

initBuff
```
protected void initBuff(int size)
```

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)
```

scanChar
```
protected final void scanChar()
```

unscan
```
protected void unscan()
```

isEOF
```
public boolean isEOF()
```

lexError

protected void lexError(String key,
                        Object... args)

Report an error at the given position using the provided arguments.

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()
```

scanLBracket
```
protected void scanLBracket()
```

scanString
```
protected void scanString()
```

scanString2
```
protected final void scanString2()
```

scanString2_d
```
protected final void scanString2_d()
```

scanAlias
```
protected final void scanAlias()
```

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

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

scanVariable_at
```
protected void scanVariable_at()
```

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

scanHiveComment

protected final void scanHiveComment()

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

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

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

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

isDigit

public final boolean isDigit(char ch)

isDigit2

protected static final boolean isDigit2(char ch)

putChar

protected final void putChar(char ch)

Append a character to sbuf.

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()
```

isSafeComment

protected boolean isSafeComment(String comment)

addComment

protected void addComment(String comment)

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()
```

类 Lexer

嵌套类概要

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

symbols_l2

features

timeZone

text

pos

mark

numberSale

numberExp

ch

buf

bufPos

token

keywords

stringVal

hash_lower

hash

commentCount

comments

skipComment

commentHandler

endOfComment

keepComments

line

lines

dbType

optimizedForParameterized

keepSourceLocation

startPos

posLine

posColumn

构造器详细资料

Lexer

Lexer

Lexer

Lexer

Lexer

方法详细资料

isKeepComments

setKeepComments

getCommentHandler

setCommentHandler

charAt

addSymbol

subString

sub_chars

initBuff

arraycopy

isAllowComment

setAllowComment

nextVarIndex

getKeywords

mark

reset

reset

reset

scanChar

unscan

isEOF

lexError

token

setToken

getDbType

info

nextTokenComma

nextTokenCommaValue

nextTokenEq

nextTokenLParen

nextTokenValue

nextTokenBy

nextTokenNotOrNull

nextTokenIdent

scanSQLType

scanSQLTypeV2