com.sap.cds.impl.parser

Class AbstractCqnExpressionParser

java.lang.Object

com.sap.cds.impl.parser.AbstractCqnExpressionParser

Direct Known Subclasses:

ExprParser, SearchParser

public abstract class AbstractCqnExpressionParser
extends Object

GRAMMAR: search expression = boolean_term | boolean_term OR search_expression boolean_term = boolean_factor | boolean_factor AND boolean_term boolean_factor = [ NOT ] boolean_test boolean test = predicate | ( search_expression )

Field Summary

Fields

Modifier and Type	Field and Description
protected CqnToken	aheadToken
protected int	pos
protected LinkedList<CqnToken>	tokens

Constructor Summary

Constructors

Constructor and Description
AbstractCqnExpressionParser()

Method Summary

Modifier and Type	Method and Description
protected void	expect(String expected)
protected <T> T	get(Class<T> clazz)
protected CqnListValue	getList()
protected CqnLiteral<?>	getLiteral()
protected CqnPlain	getPlain()
protected CqnPredicate	getPredicate()
protected CqnValue	getValue()
protected Xpr	getXpr()
protected boolean	hasNext()
protected boolean	is(String value)
protected boolean	isList()
protected boolean	isLiteral()
protected boolean	isPlain()
protected boolean	isPredicate()
protected boolean	isRef()
protected boolean	isXpr()
protected void	nextToken()
CqnPredicate	parsePredicate(List<CqnToken> tokenList)
CqnPredicate	parsePredicate(Stream<CqnToken> tokenStream)
protected boolean	peek(String... values)
protected abstract CqnPredicate	predicate()
protected CqnSyntaxException	unexpected()

Methods inherited from class java.lang.Object

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

Field Detail

tokens

protected LinkedList<CqnToken> tokens

aheadToken

protected CqnToken aheadToken

pos

protected int pos

Constructor Detail

AbstractCqnExpressionParser

public AbstractCqnExpressionParser()

Method Detail

parsePredicate

public CqnPredicate parsePredicate(List<CqnToken> tokenList)

parsePredicate

public CqnPredicate parsePredicate(Stream<CqnToken> tokenStream)

predicate

protected abstract CqnPredicate predicate()

nextToken

protected void nextToken()

hasNext

protected boolean hasNext()

getPredicate

protected CqnPredicate getPredicate()

getPlain

protected CqnPlain getPlain()

getLiteral

protected CqnLiteral<?> getLiteral()

getXpr

protected Xpr getXpr()

getValue

protected CqnValue getValue()

getList

protected CqnListValue getList()

get

protected <T> T get(Class<T> clazz)

is

protected boolean is(String value)

peek

protected boolean peek(String... values)

isPredicate

protected boolean isPredicate()

isPlain

protected boolean isPlain()

isLiteral

protected boolean isLiteral()

isRef

protected boolean isRef()

isXpr

protected boolean isXpr()

isList

protected boolean isList()

unexpected

protected CqnSyntaxException unexpected()

expect

protected void expect(String expected)