Package org.drools.drl.parser.lang

Class ParserHelper

java.lang.Object

org.drools.drl.parser.lang.ParserHelper

public class ParserHelper
extends Object

This is a class to hold all the helper functions/methods used by the DRL parser

Field Summary

Fields

Modifier and Type	Field	Description
LinkedList<DroolsSentence>	editorInterface
List<DroolsParserException>	errors
boolean	isEditorInterfaceEnabled
final String[]	statementKeywords

Constructor Summary

Constructors

Constructor	Description
ParserHelper(org.antlr.runtime.TokenStream input, org.antlr.runtime.RecognizerSharedState state, LanguageLevelOption languageLevel)

Method Summary

Modifier and Type	Method	Description
void	beginSentence(DroolsSentenceType sentenceType)
void	disableEditorInterface()
void	emit(int activeContext)
void	emit(List<?> tokens, DroolsEditorType editorType)
void	emit(org.antlr.runtime.Token token, DroolsEditorType editorType)
void	enableEditorInterface()
<T extends DescrBuilder<?, ?>> T	end(Class<T> clazz, DescrBuilder<?,?> builder)
DroolsSentence	getActiveSentence()
LinkedList<DroolsSentence>	getEditorInterface()
List<String>	getErrorMessages()	Return a list of pretty strings summarising the errors
List<DroolsParserException>	getErrors()	return the raw DroolsParserException errors
boolean	getHasOperator()
DroolsToken	getLastTokenOnList(LinkedList<?> list)
String	getLeftMostExpr()
String[]	getStatementKeywords()
boolean	hasErrors()	return true if any parser errors were accumulated
boolean	isPluggableEvaluator(boolean negated)
boolean	isPluggableEvaluator(int offset, boolean negated)
Map<DroolsParaphraseTypes,String>	popParaphrases()
void	pushParaphrases(DroolsParaphraseTypes type)	Method that adds a paraphrase type into paraphrases stack.
void	reportError(Exception e)
void	reportError(org.antlr.runtime.RecognitionException ex)
String	retrieveLT(int LTNumber)
void	setHasOperator(boolean hasOperator)
void	setLeftMostExpr(String value)
void	setParaphrasesValue(DroolsParaphraseTypes type, String value)	Method that sets paraphrase value for a type into paraphrases stack.
<T extends DescrBuilder<?, ?>> T	start(DescrBuilder<?,?> ctxBuilder, Class<T> clazz, String param)
boolean	validateAttribute(int index)
boolean	validateCEKeyword(int index)
boolean	validateIdentifierKey(String text)
boolean	validateLT(int LTNumber, String text)
boolean	validateStatement(int index)

Methods inherited from class java.lang.Object

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

Field Details

statementKeywords

public final String[] statementKeywords

errors

public List<DroolsParserException> errors

editorInterface

public LinkedList<DroolsSentence> editorInterface

isEditorInterfaceEnabled

public boolean isEditorInterfaceEnabled

Constructor Details

ParserHelper

public ParserHelper(org.antlr.runtime.TokenStream input,
 org.antlr.runtime.RecognizerSharedState state,
 LanguageLevelOption languageLevel)

Method Details

getEditorInterface

public LinkedList<DroolsSentence> getEditorInterface()

setLeftMostExpr

public void setLeftMostExpr(String value)

getLeftMostExpr

public String getLeftMostExpr()

enableEditorInterface

public void enableEditorInterface()

disableEditorInterface

public void disableEditorInterface()

setHasOperator

public void setHasOperator(boolean hasOperator)

getHasOperator

public boolean getHasOperator()

beginSentence

public void beginSentence(DroolsSentenceType sentenceType)

getActiveSentence

public DroolsSentence getActiveSentence()

emit

public void emit(List<?> tokens,
 DroolsEditorType editorType)

emit

public void emit(org.antlr.runtime.Token token,
 DroolsEditorType editorType)

emit

public void emit(int activeContext)

getLastTokenOnList

public DroolsToken getLastTokenOnList(LinkedList<?> list)

retrieveLT

public String retrieveLT(int LTNumber)

validateLT

public boolean validateLT(int LTNumber,
 String text)

isPluggableEvaluator

public boolean isPluggableEvaluator(int offset,
 boolean negated)

isPluggableEvaluator

public boolean isPluggableEvaluator(boolean negated)

validateIdentifierKey

public boolean validateIdentifierKey(String text)

validateCEKeyword

public boolean validateCEKeyword(int index)

validateStatement

public boolean validateStatement(int index)

validateAttribute

public boolean validateAttribute(int index)

reportError

public void reportError(org.antlr.runtime.RecognitionException ex)

reportError

public void reportError(Exception e)

getErrors

public List<DroolsParserException> getErrors()

return the raw DroolsParserException errors

getErrorMessages

public List<String> getErrorMessages()

Return a list of pretty strings summarising the errors

hasErrors

public boolean hasErrors()

return true if any parser errors were accumulated

pushParaphrases

public void pushParaphrases(DroolsParaphraseTypes type)

Method that adds a paraphrase type into paraphrases stack.

Parameters:

type - paraphrase type

popParaphrases

public Map<DroolsParaphraseTypes,String> popParaphrases()

setParaphrasesValue

public void setParaphrasesValue(DroolsParaphraseTypes type,
 String value)

Method that sets paraphrase value for a type into paraphrases stack.

Parameters:

type - paraphrase type

value - paraphrase value

start

public <T extends DescrBuilder<?,
?>> T start(DescrBuilder<?,?> ctxBuilder,
 Class<T> clazz,
 String param)

end

public <T extends DescrBuilder<?,
?>> T end(Class<T> clazz,
 DescrBuilder<?,?> builder)

getStatementKeywords

public String[] getStatementKeywords()