ch.qos.logback.core.pattern.parser

Class TokenStream

java.lang.Object

ch.qos.logback.core.pattern.parser.TokenStream

class TokenStream
extends java.lang.Object

Return a steady stream of tokens.

The returned tokens are one of: LITERAL, '%', FORMAT_MODIFIER, SIMPLE_KEYWORD, COMPOSITE_KEYWORD OPTION, LEFT_PARENTHESIS, and RIGHT_PARENTHESIS.

The '\' character is used as escape. It can be used to escape '_', '%', '(' and '('.

Note that there is no EOS token returned.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	TokenStream.TokenizerState

Field Summary

Fields

Modifier and Type	Field and Description
(package private) IEscapeUtil	escapeUtil
(package private) IEscapeUtil	optionEscapeUtil
(package private) java.lang.String	pattern
(package private) int	patternLength
(package private) int	pointer
(package private) TokenStream.TokenizerState	state

Constructor Summary

Constructors

Constructor and Description
TokenStream(java.lang.String pattern)
TokenStream(java.lang.String pattern, IEscapeUtil escapeUtil)

Method Summary

Modifier and Type	Method and Description
private void	addValuedToken(int type, java.lang.StringBuffer buf, java.util.List<Token> tokenList)
(package private) void	escape(java.lang.String escapeChars, java.lang.StringBuffer buf)
private void	handleFormatModifierState(char c, java.util.List<Token> tokenList, java.lang.StringBuffer buf)
private void	handleKeywordState(char c, java.util.List<Token> tokenList, java.lang.StringBuffer buf)
private void	handleLiteralState(char c, java.util.List<Token> tokenList, java.lang.StringBuffer buf)
private void	handleRightParenthesisState(char c, java.util.List<Token> tokenList, java.lang.StringBuffer buf)
(package private) void	optionEscape(java.lang.String escapeChars, java.lang.StringBuffer buf)
private void	processOption(char c, java.util.List<Token> tokenList, java.lang.StringBuffer buf)
(package private) java.util.List	tokenize()

Methods inherited from class java.lang.Object

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

Field Detail

pattern

final java.lang.String pattern

patternLength

final int patternLength

escapeUtil

final IEscapeUtil escapeUtil

optionEscapeUtil

final IEscapeUtil optionEscapeUtil

state

TokenStream.TokenizerState state

pointer

int pointer

Constructor Detail

TokenStream

TokenStream(java.lang.String pattern)

TokenStream

TokenStream(java.lang.String pattern,
            IEscapeUtil escapeUtil)

Method Detail

tokenize

java.util.List tokenize()
                 throws ScanException

Throws:

ScanException

handleRightParenthesisState

private void handleRightParenthesisState(char c,
                                         java.util.List<Token> tokenList,
                                         java.lang.StringBuffer buf)

processOption

private void processOption(char c,
                           java.util.List<Token> tokenList,
                           java.lang.StringBuffer buf)
                    throws ScanException

Throws:

ScanException

handleFormatModifierState

private void handleFormatModifierState(char c,
                                       java.util.List<Token> tokenList,
                                       java.lang.StringBuffer buf)

handleLiteralState

private void handleLiteralState(char c,
                                java.util.List<Token> tokenList,
                                java.lang.StringBuffer buf)

handleKeywordState

private void handleKeywordState(char c,
                                java.util.List<Token> tokenList,
                                java.lang.StringBuffer buf)

escape

void escape(java.lang.String escapeChars,
            java.lang.StringBuffer buf)

optionEscape

void optionEscape(java.lang.String escapeChars,
                  java.lang.StringBuffer buf)

addValuedToken

private void addValuedToken(int type,
                            java.lang.StringBuffer buf,
                            java.util.List<Token> tokenList)