org.eclipse.equinox.internal.p2.metadata.expression.parser

Class ExpressionParser

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

java.util.Vector<E>

java.util.Stack<IExpression>

org.eclipse.equinox.internal.p2.metadata.expression.parser.ExpressionParser

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<IExpression>, java.util.Collection<IExpression>, java.util.List<IExpression>, java.util.RandomAccess, IExpressionConstants, IExpressionParser

Direct Known Subclasses:

QLParser

public class ExpressionParser
extends java.util.Stack<IExpression>
implements IExpressionConstants, IExpressionParser

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	currentToken
protected java.lang.String	expression
protected IExpressionFactory	factory
protected static java.util.Map<java.lang.String,java.lang.Integer>	keywords
protected int	lastTokenPos
protected java.lang.String	rootVariable
protected static int	TOKEN_AND
protected static int	TOKEN_COMMA
protected static int	TOKEN_DOLLAR
protected static int	TOKEN_DOT
protected static int	TOKEN_ELSE
protected static int	TOKEN_END
protected static int	TOKEN_EQUAL
protected static int	TOKEN_ERROR
protected static int	TOKEN_FALSE
protected static int	TOKEN_GREATER
protected static int	TOKEN_GREATER_EQUAL
protected static int	TOKEN_IDENTIFIER
protected static int	TOKEN_IF
protected static int	TOKEN_LB
protected static int	TOKEN_LC
protected static int	TOKEN_LESS
protected static int	TOKEN_LESS_EQUAL
protected static int	TOKEN_LITERAL
protected static int	TOKEN_LP
protected static int	TOKEN_MATCHES
protected static int	TOKEN_NOT
protected static int	TOKEN_NOT_EQUAL
protected static int	TOKEN_NULL
protected static int	TOKEN_OR
protected static int	TOKEN_PIPE
protected static int	TOKEN_RB
protected static int	TOKEN_RC
protected static int	TOKEN_RP
protected static int	TOKEN_TRUE
protected int	tokenPos
protected java.lang.Object	tokenValue

Fields inherited from class java.util.Vector

capacityIncrement, elementCount, elementData

Fields inherited from class java.util.AbstractList

modCount

Fields inherited from interface org.eclipse.equinox.internal.p2.metadata.expression.IExpressionConstants

KEYWORD_ALL, KEYWORD_BOOLEAN, KEYWORD_CLASS, KEYWORD_COLLECT, KEYWORD_EXISTS, KEYWORD_FALSE, KEYWORD_FILTER, KEYWORD_FIRST, KEYWORD_FLATTEN, KEYWORD_INTERSECT, KEYWORD_IQUERY, KEYWORD_LATEST, KEYWORD_LIMIT, KEYWORD_LOCALIZED_KEYS, KEYWORD_LOCALIZED_MAP, KEYWORD_LOCALIZED_PROPERTY, KEYWORD_NULL, KEYWORD_RANGE, KEYWORD_SATISFIES_ALL, KEYWORD_SATISFIES_ANY, KEYWORD_SELECT, KEYWORD_SET, KEYWORD_TRAVERSE, KEYWORD_TRUE, KEYWORD_UNION, KEYWORD_UNIQUE, KEYWORD_VERSION, OPERATOR_AND, OPERATOR_ARRAY, OPERATOR_ASSIGN, OPERATOR_AT, OPERATOR_EACH, OPERATOR_ELSE, OPERATOR_EQUALS, OPERATOR_GT, OPERATOR_GT_EQUAL, OPERATOR_IF, OPERATOR_LT, OPERATOR_LT_EQUAL, OPERATOR_MATCHES, OPERATOR_MEMBER, OPERATOR_NOT, OPERATOR_NOT_EQUALS, OPERATOR_OR, OPERATOR_PARAMETER, PRIORITY_AND, PRIORITY_ASSIGNMENT, PRIORITY_BINARY, PRIORITY_COLLECTION, PRIORITY_COMMA, PRIORITY_CONDITION, PRIORITY_FUNCTION, PRIORITY_LAMBDA, PRIORITY_LITERAL, PRIORITY_MAX, PRIORITY_MEMBER, PRIORITY_NOT, PRIORITY_OR, PRIORITY_VARIABLE, VARIABLE_EVERYTHING, VARIABLE_THIS

Constructor Summary

Constructors

Constructor and Description
ExpressionParser(IExpressionFactory factory)

Method Summary

Modifier and Type	Method and Description
protected void	assertToken(int token)
protected IExpression	getVariableOrRootMember(java.lang.String id)
protected java.util.Map<java.lang.String,java.lang.Integer>	keywordToTokenMap()
protected void	nextToken()
IExpression	parse(java.lang.String exprString) Create a new expression.
protected IExpression	parseAnd()
protected IExpression[]	parseArray()
protected IExpression	parseBinary()
protected IExpression	parseCollectionExpression()
protected IExpression	parseCollectionLHS()
protected IExpression	parseCollectionRHS(IExpression expr, int funcToken)
protected IExpression	parseCondition()
protected IExpression	parseLambdaDefinition()
protected IExpression	parseMember()
protected IExpression	parseNot()
protected IExpression	parseOr()
IExpression	parseQuery(java.lang.String exprString) Create an arbitrary expression.
protected IExpression	parseUnary()
protected void	popVariable()
protected ExpressionParseException	syntaxError()
protected ExpressionParseException	syntaxError(java.lang.String message)

Methods inherited from class java.util.Stack

empty, peek, pop, push, search

Methods inherited from class java.util.Vector

add, add, addAll, addAll, addElement, capacity, clear, clone, contains, containsAll, copyInto, elementAt, elements, ensureCapacity, equals, firstElement, forEach, get, hashCode, indexOf, indexOf, insertElementAt, isEmpty, iterator, lastElement, lastIndexOf, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeAllElements, removeElement, removeElementAt, removeIf, removeRange, replaceAll, retainAll, set, setElementAt, setSize, size, sort, spliterator, subList, toArray, toArray, toString, trimToSize

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, stream

Field Detail

TOKEN_OR

protected static final int TOKEN_OR

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Constant Field Values

TOKEN_AND

protected static final int TOKEN_AND

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Constant Field Values

TOKEN_EQUAL

protected static final int TOKEN_EQUAL

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Constant Field Values

TOKEN_NOT_EQUAL

protected static final int TOKEN_NOT_EQUAL

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Constant Field Values

TOKEN_LESS

protected static final int TOKEN_LESS

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Constant Field Values

TOKEN_LESS_EQUAL

protected static final int TOKEN_LESS_EQUAL

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Constant Field Values

TOKEN_GREATER

protected static final int TOKEN_GREATER

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Constant Field Values

TOKEN_GREATER_EQUAL

protected static final int TOKEN_GREATER_EQUAL

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Constant Field Values

TOKEN_MATCHES

protected static final int TOKEN_MATCHES

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Constant Field Values

TOKEN_NOT

protected static final int TOKEN_NOT

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Constant Field Values

TOKEN_DOT

protected static final int TOKEN_DOT

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Constant Field Values

TOKEN_COMMA

protected static final int TOKEN_COMMA

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Constant Field Values

TOKEN_PIPE

protected static final int TOKEN_PIPE

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Constant Field Values

TOKEN_DOLLAR

protected static final int TOKEN_DOLLAR

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Constant Field Values

TOKEN_IF

protected static final int TOKEN_IF

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Constant Field Values

TOKEN_ELSE

protected static final int TOKEN_ELSE

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Constant Field Values

TOKEN_LP

protected static final int TOKEN_LP

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Constant Field Values

TOKEN_RP

protected static final int TOKEN_RP

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Constant Field Values

TOKEN_LB

protected static final int TOKEN_LB

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Constant Field Values

TOKEN_RB

protected static final int TOKEN_RB

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Constant Field Values

TOKEN_LC

protected static final int TOKEN_LC

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Constant Field Values

TOKEN_RC

protected static final int TOKEN_RC

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Constant Field Values

TOKEN_IDENTIFIER

protected static final int TOKEN_IDENTIFIER

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Constant Field Values

TOKEN_LITERAL

protected static final int TOKEN_LITERAL

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Constant Field Values

TOKEN_NULL

protected static final int TOKEN_NULL

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Constant Field Values

TOKEN_TRUE

protected static final int TOKEN_TRUE

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Constant Field Values

TOKEN_FALSE

protected static final int TOKEN_FALSE

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Constant Field Values

TOKEN_END

protected static final int TOKEN_END

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Constant Field Values

TOKEN_ERROR

protected static final int TOKEN_ERROR

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Constant Field Values

keywords

protected static final java.util.Map<java.lang.String,java.lang.Integer> keywords

factory

protected final IExpressionFactory factory

expression

protected java.lang.String expression

tokenPos

protected int tokenPos

currentToken

protected int currentToken

lastTokenPos

protected int lastTokenPos

tokenValue

protected java.lang.Object tokenValue

rootVariable

protected java.lang.String rootVariable

Constructor Detail

ExpressionParser

public ExpressionParser(IExpressionFactory factory)

Method Detail

parse

public IExpression parse(java.lang.String exprString)

Description copied from interface: IExpressionParser

Create a new expression. The expression will have access to the global variable 'this' and to the context parameters.

Specified by:

parse in interface IExpressionParser

Parameters:

exprString - The string representing the boolean expression.

Returns:

The resulting expression tree.

parseQuery

public IExpression parseQuery(java.lang.String exprString)

Description copied from interface: IExpressionParser

Create an arbitrary expression. The expression will have access to the global variable 'everything' and to the context parameters.

Specified by:

parseQuery in interface IExpressionParser

Parameters:

exprString - The string representing the boolean expression.

Returns:

The resulting expression tree.

keywordToTokenMap

protected java.util.Map<java.lang.String,java.lang.Integer> keywordToTokenMap()

parseCondition

protected IExpression parseCondition()

parseOr

protected IExpression parseOr()

parseAnd

protected IExpression parseAnd()

parseBinary

protected IExpression parseBinary()

parseNot

protected IExpression parseNot()

parseCollectionExpression

protected IExpression parseCollectionExpression()

parseCollectionLHS

protected IExpression parseCollectionLHS()

parseCollectionRHS

protected IExpression parseCollectionRHS(IExpression expr,
                                         int funcToken)

parseLambdaDefinition

protected IExpression parseLambdaDefinition()

parseMember

protected IExpression parseMember()

parseUnary

protected IExpression parseUnary()

parseArray

protected IExpression[] parseArray()

assertToken

protected void assertToken(int token)

getVariableOrRootMember

protected IExpression getVariableOrRootMember(java.lang.String id)

nextToken

protected void nextToken()

popVariable

protected void popVariable()

syntaxError

protected ExpressionParseException syntaxError()

syntaxError

protected ExpressionParseException syntaxError(java.lang.String message)