bboss.org.apache.velocity.runtime.parser

类 VelocityCharStream

java.lang.Object

bboss.org.apache.velocity.runtime.parser.VelocityCharStream

所有已实现的接口:

CharStream

public final class VelocityCharStream
extends java.lang.Object
implements CharStream

An implementation of interface CharStream, where the stream is assumed to contain only ASCII characters (without unicode processing).

字段概要

字段

限定符和类型	字段和说明
int	bufpos
static boolean	staticFlag

构造器概要

构造器

构造器和说明
VelocityCharStream(java.io.InputStream dstream, int startline, int startcolumn)
VelocityCharStream(java.io.InputStream dstream, int startline, int startcolumn, int buffersize)
VelocityCharStream(java.io.Reader dstream, int startline, int startcolumn)
VelocityCharStream(java.io.Reader dstream, int startline, int startcolumn, int buffersize)

方法概要

限定符和类型	方法和说明
void	adjustBeginLineColumn(int newLine, int newCol) Method to adjust line and column numbers for the start of a token.
void	backup(int amount) Backs up the input stream by amount steps.
char	BeginToken() Returns the next character that marks the beginning of the next token.
void	Done() The lexer calls this function to indicate that it is done with the stream and hence implementations can free any resources held by this class.
int	getBeginColumn() Returns the column number of the first character for current token (being matched after the last call to BeginTOken).
int	getBeginLine() Returns the line number of the first character for current token (being matched after the last call to BeginTOken).
int	getColumn() 已过时。
int	getEndColumn() Returns the column number of the last character for current token (being matched after the last call to BeginTOken).
int	getEndLine() Returns the line number of the last character for current token (being matched after the last call to BeginTOken).
java.lang.String	GetImage() Returns a string made up of characters from the marked token beginning to the current buffer position.
int	getLine() 已过时。
char[]	GetSuffix(int len) Returns an array of characters that make up the suffix of length 'len' for the currently matched token.
char	readChar() Returns the next character from the selected input.
void	ReInit(java.io.InputStream dstream, int startline, int startcolumn)
void	ReInit(java.io.InputStream dstream, int startline, int startcolumn, int buffersize)
void	ReInit(java.io.Reader dstream, int startline, int startcolumn)
void	ReInit(java.io.Reader dstream, int startline, int startcolumn, int buffersize)

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

staticFlag

public static final boolean staticFlag

另请参阅:

常量字段值

bufpos

public int bufpos

构造器详细资料

VelocityCharStream

public VelocityCharStream(java.io.Reader dstream,
                          int startline,
                          int startcolumn,
                          int buffersize)

参数:

dstream -

startline -

startcolumn -

buffersize -

VelocityCharStream

public VelocityCharStream(java.io.Reader dstream,
                          int startline,
                          int startcolumn)

参数:

dstream -

startline -

startcolumn -

VelocityCharStream

public VelocityCharStream(java.io.InputStream dstream,
                          int startline,
                          int startcolumn,
                          int buffersize)

参数:

dstream -

startline -

startcolumn -

buffersize -

VelocityCharStream

public VelocityCharStream(java.io.InputStream dstream,
                          int startline,
                          int startcolumn)

参数:

dstream -

startline -

startcolumn -

方法详细资料

BeginToken

public final char BeginToken()
                      throws java.io.IOException

从接口复制的说明: CharStream

Returns the next character that marks the beginning of the next token. All characters must remain in the buffer between two successive calls to this method to implement backup correctly.

指定者:

BeginToken 在接口中 CharStream

抛出:

java.io.IOException

另请参阅:

CharStream.BeginToken()

readChar

public final char readChar()
                    throws java.io.IOException

从接口复制的说明: CharStream

Returns the next character from the selected input. The method of selecting the input is the responsibility of the class implementing this interface. Can throw any java.io.IOException.

指定者:

readChar 在接口中 CharStream

抛出:

java.io.IOException

另请参阅:

CharStream.readChar()

getColumn

public final int getColumn()

已过时。

从接口复制的说明: CharStream

Returns the column position of the character last read.

指定者:

getColumn 在接口中 CharStream

另请参阅:

CharStream.getColumn()

getLine

public final int getLine()

已过时。

从接口复制的说明: CharStream

Returns the line number of the character last read.

指定者:

getLine 在接口中 CharStream

另请参阅:

CharStream.getLine()

getEndColumn

public final int getEndColumn()

从接口复制的说明: CharStream

Returns the column number of the last character for current token (being matched after the last call to BeginTOken).

指定者:

getEndColumn 在接口中 CharStream

另请参阅:

CharStream.getEndColumn()

getEndLine

public final int getEndLine()

从接口复制的说明: CharStream

Returns the line number of the last character for current token (being matched after the last call to BeginTOken).

指定者:

getEndLine 在接口中 CharStream

另请参阅:

CharStream.getEndLine()

getBeginColumn

public final int getBeginColumn()

从接口复制的说明: CharStream

Returns the column number of the first character for current token (being matched after the last call to BeginTOken).

指定者:

getBeginColumn 在接口中 CharStream

另请参阅:

CharStream.getBeginColumn()

getBeginLine

public final int getBeginLine()

从接口复制的说明: CharStream

Returns the line number of the first character for current token (being matched after the last call to BeginTOken).

指定者:

getBeginLine 在接口中 CharStream

另请参阅:

CharStream.getBeginLine()

backup

public final void backup(int amount)

从接口复制的说明: CharStream

Backs up the input stream by amount steps. Lexer calls this method if it had already read some characters, but could not use them to match a (longer) token. So, they will be used again as the prefix of the next token and it is the implemetation's responsibility to do this right.

指定者:

backup 在接口中 CharStream

另请参阅:

CharStream.backup(int)

ReInit

public void ReInit(java.io.Reader dstream,
                   int startline,
                   int startcolumn,
                   int buffersize)

参数:

dstream -

startline -

startcolumn -

buffersize -

ReInit

public void ReInit(java.io.Reader dstream,
                   int startline,
                   int startcolumn)

参数:

dstream -

startline -

startcolumn -

ReInit

public void ReInit(java.io.InputStream dstream,
                   int startline,
                   int startcolumn,
                   int buffersize)

参数:

dstream -

startline -

startcolumn -

buffersize -

ReInit

public void ReInit(java.io.InputStream dstream,
                   int startline,
                   int startcolumn)

参数:

dstream -

startline -

startcolumn -

GetImage

public final java.lang.String GetImage()

从接口复制的说明: CharStream

Returns a string made up of characters from the marked token beginning to the current buffer position. Implementations have the choice of returning anything that they want to. For example, for efficiency, one might decide to just return null, which is a valid implementation.

指定者:

GetImage 在接口中 CharStream

另请参阅:

CharStream.GetImage()

GetSuffix

public final char[] GetSuffix(int len)

从接口复制的说明: CharStream

Returns an array of characters that make up the suffix of length 'len' for the currently matched token. This is used to build up the matched string for use in actions in the case of MORE. A simple and inefficient implementation of this is as follows : { String t = GetImage(); return t.substring(t.length() - len, t.length()).toCharArray(); }

指定者:

GetSuffix 在接口中 CharStream

另请参阅:

CharStream.GetSuffix(int)

Done

public void Done()

从接口复制的说明: CharStream

The lexer calls this function to indicate that it is done with the stream and hence implementations can free any resources held by this class. Again, the body of this function can be just empty and it will not affect the lexer's operation.

指定者:

Done 在接口中 CharStream

另请参阅:

CharStream.Done()

adjustBeginLineColumn

public void adjustBeginLineColumn(int newLine,
                                  int newCol)

Method to adjust line and column numbers for the start of a token.

参数:

newLine -

newCol -