hudson.scheduler

Class CrontabParser

java.lang.Object

antlr.Parser

antlr.LLkParser

hudson.scheduler.CrontabParser

All Implemented Interfaces:

CrontabParserTokenTypes

public class CrontabParser
extends antlr.LLkParser
implements CrontabParserTokenTypes

Field Summary

Fields

Modifier and Type	Field and Description
static String[]	_tokenNames
protected Hash	hash Used to pick a value from within the range
static boolean	HASH_TOKENS This property hashes tokens in the cron tab tokens like @daily so that they spread evenly.
static int	NO_STEP Constant that indicates no step value.

Fields inherited from class antlr.Parser

astFactory, inputState, returnAST, tokenNames, tokenTypeToASTClassMap, traceDepth

Fields inherited from interface hudson.scheduler.CrontabParserTokenTypes

ANNUALLY, AT, DAILY, DIV, EOF, H, HOURLY, LITERAL_annually, LITERAL_daily, LITERAL_H, LITERAL_hourly, LITERAL_midnight, LITERAL_monthly, LITERAL_weekly, LITERAL_yearly, LPAREN, MIDNIGHT, MINUS, MONTHLY, NULL_TREE_LOOKAHEAD, OR, RPAREN, STAR, TOKEN, WEEKLY, WS, YEARLY

Constructor Summary

Constructors

Modifier	Constructor and Description
	CrontabParser(antlr.ParserSharedInputState state)
	CrontabParser(antlr.TokenBuffer tokenBuf)
protected	CrontabParser(antlr.TokenBuffer tokenBuf, int k)
	CrontabParser(antlr.TokenStream lexer)
protected	CrontabParser(antlr.TokenStream lexer, int k)

Method Summary

Modifier and Type	Method and Description
protected long	doHash(int step, int field) Uses Hash to choose a random (but stable) value from within this field.
protected long	doHash(int s, int e, int step, int field)
protected long	doRange(int step, int field)
protected long	doRange(int start, int end, int step, int field)
long	expr(int field)
protected Hash	getHashForTokens()
protected void	rangeCheck(int value, int field)
void	setHash(Hash hash)
void	startRule(CronTab table)
long	term(int field)
int	token()

Methods inherited from class antlr.LLkParser

consume, LA, LT, traceIn, traceOut

Methods inherited from class antlr.Parser

addMessageListener, addParserListener, addParserMatchListener, addParserTokenListener, addSemanticPredicateListener, addSyntacticPredicateListener, addTraceListener, consumeUntil, consumeUntil, defaultDebuggingSetup, getAST, getASTFactory, getFilename, getInputState, getTokenName, getTokenNames, getTokenTypeToASTClassMap, isDebugMode, mark, match, match, matchNot, panic, recover, removeMessageListener, removeParserListener, removeParserMatchListener, removeParserTokenListener, removeSemanticPredicateListener, removeSyntacticPredicateListener, removeTraceListener, reportError, reportError, reportWarning, rewind, setASTFactory, setASTNodeClass, setASTNodeType, setDebugMode, setFilename, setIgnoreInvalidDebugCalls, setInputState, setTokenBuffer, traceIndent

Methods inherited from class java.lang.Object

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

Field Detail

_tokenNames

public static final String[] _tokenNames

hash

protected Hash hash

Used to pick a value from within the range

HASH_TOKENS

public static boolean HASH_TOKENS

This property hashes tokens in the cron tab tokens like @daily so that they spread evenly.

NO_STEP

public static final int NO_STEP

Constant that indicates no step value.

See Also:

Constant Field Values

Constructor Detail

CrontabParser

protected CrontabParser(antlr.TokenBuffer tokenBuf,
                        int k)

CrontabParser

public CrontabParser(antlr.TokenBuffer tokenBuf)

CrontabParser

protected CrontabParser(antlr.TokenStream lexer,
                        int k)

CrontabParser

public CrontabParser(antlr.TokenStream lexer)

CrontabParser

public CrontabParser(antlr.ParserSharedInputState state)

Method Detail

startRule

public final void startRule(CronTab table)
                     throws antlr.RecognitionException,
                            antlr.TokenStreamException,
                            antlr.ANTLRException

Throws:

antlr.RecognitionException

antlr.TokenStreamException

antlr.ANTLRException

expr

public final long expr(int field)
                throws antlr.RecognitionException,
                       antlr.TokenStreamException,
                       antlr.ANTLRException

Throws:

antlr.RecognitionException

antlr.TokenStreamException

antlr.ANTLRException

term

public final long term(int field)
                throws antlr.RecognitionException,
                       antlr.TokenStreamException,
                       antlr.ANTLRException

Throws:

antlr.RecognitionException

antlr.TokenStreamException

antlr.ANTLRException

token

public final int token()
                throws antlr.RecognitionException,
                       antlr.TokenStreamException

Throws:

antlr.RecognitionException

antlr.TokenStreamException

setHash

public void setHash(Hash hash)

doRange

protected long doRange(int start,
                       int end,
                       int step,
                       int field)
                throws antlr.ANTLRException

Throws:

antlr.ANTLRException

doRange

protected long doRange(int step,
                       int field)
                throws antlr.ANTLRException

Throws:

antlr.ANTLRException

doHash

protected long doHash(int step,
                      int field)
               throws antlr.ANTLRException

Uses Hash to choose a random (but stable) value from within this field.

Parameters:

step - Increments. For example, 15 if "H/15". Or NO_STEP to indicate the special constant for "H" without the step value.

Throws:

antlr.ANTLRException

doHash

protected long doHash(int s,
                      int e,
                      int step,
                      int field)
               throws antlr.ANTLRException

Throws:

antlr.ANTLRException

rangeCheck

protected void rangeCheck(int value,
                          int field)
                   throws antlr.ANTLRException

Throws:

antlr.ANTLRException

getHashForTokens

protected Hash getHashForTokens()