XPath2 | ::= | XPath <EOF> |
MatchPattern | ::= | Pattern <EOF> |
XPath | ::= | ( Expr )? |
Expr | ::= | ExprSingle ( <Comma> ExprSingle )* |
Pattern | ::= | PathPattern ( ( <Union> | <Vbar> ) Pattern )? |
PathPattern | ::= | ( ( <Root> ( RelativePathPattern )? ) | ( <RootDescendants> RelativePathPattern ) | ( IdKeyPattern ( ( <Slash> | <SlashSlash> ) RelativePathPattern )? ) | RelativePathPattern ) |
RelativePathPattern | ::= | PatternStep ( ( <Slash> | <SlashSlash> ) RelativePathPattern )? |
PatternStep | ::= | ( PatternAxis )? NodeTest Predicates |
PatternAxis | ::= | ( <AxisChild> | <AxisAttribute> | <At> ) |
IdKeyPattern | ::= | ( ( <IDLpar> IdKeyValue <Rpar> ) | ( <KeyLpar> <StringLiteral> <Comma> IdKeyValue <Rpar> ) ) |
IdKeyValue | ::= | ( <StringLiteral> | ( <VariableIndicator> <VarName> ) ) |
ExprSingle | ::= | ( ForExpr | QuantifiedExpr | IfExpr | OrExpr ) |
ForExpr | ::= | ( SimpleForClause <Return> ExprSingle ) |
SimpleForClause | ::= | <ForVariable> <VarName> <In> ExprSingle ( <Comma> ( <VariableIndicator> <VarName> ) <In> ExprSingle )* |
QuantifiedExpr | ::= | ( ( <Some> | <Every> ) <VarName> <In> ExprSingle ( <Comma> ( <VariableIndicator> <VarName> ) <In> ExprSingle )* <Satisfies> ExprSingle ) |
IfExpr | ::= | ( <IfLpar> Expr <Rpar> <Then> ExprSingle <Else> ExprSingle ) |
OperatorExpr | ::= | OrExpr |
OrExpr | ::= | AndExpr ( <Or> AndExpr )* |
AndExpr | ::= | InstanceofExpr ( <And> InstanceofExpr )* |
InstanceofExpr | ::= | TreatExpr ( <Instanceof> SequenceType )? |
TreatExpr | ::= | CastableExpr ( <TreatAs> SequenceType )? |
CastableExpr | ::= | CastExpr ( <Castable> SingleType )? |
CastExpr | ::= | ComparisonExpr ( <CastAs> SingleType )? |
ComparisonExpr | ::= | RangeExpr ( ( ValueComp | GeneralComp | NodeComp ) RangeExpr )? |
RangeExpr | ::= | AdditiveExpr ( <To> AdditiveExpr )? |
AdditiveExpr | ::= | MultiplicativeExpr ( ( <Plus> | <Minus> ) MultiplicativeExpr )* |
MultiplicativeExpr | ::= | UnaryExpr ( ( <Multiply> | <Div> | <Idiv> | <Mod> ) UnaryExpr )* |
UnaryExpr | ::= | ( <UnaryMinus> | <UnaryPlus> )* UnionExpr |
UnionExpr | ::= | IntersectExceptExpr ( ( <Union> | <Vbar> ) IntersectExceptExpr )* |
IntersectExceptExpr | ::= | ValueExpr ( ( <Intersect> | <Except> ) ValueExpr )* |
ValueExpr | ::= | ( PathExpr ) |
PathExpr | ::= | ( ( <Root> ( RelativePathExpr )? ) | ( <RootDescendants> RelativePathExpr ) | RelativePathExpr ) |
RelativePathExpr | ::= | StepExpr ( ( <Slash> | <SlashSlash> ) StepExpr )* |
StepExpr | ::= | ( AxisStep | FilterStep ) |
AxisStep | ::= | ( ForwardStep | ReverseStep ) Predicates |
FilterStep | ::= | PrimaryExpr Predicates |
ContextItemExpr | ::= | <Dot> |
PrimaryExpr | ::= | ( Literal | VarRef | ParenthesizedExpr | ContextItemExpr | FunctionCall ) |
VarRef | ::= | <VariableIndicator> <VarName> |
Predicates | ::= | ( ( ( <Lbrack> Expr <Rbrack> ) ) )* |
GeneralComp | ::= | ( <Equals> | <NotEquals> | <Lt> | <LtEquals> | <Gt> | <GtEquals> ) |
ValueComp | ::= | ( <FortranEq> | <FortranNe> | <FortranLt> | <FortranLe> | <FortranGt> | <FortranGe> ) |
NodeComp | ::= | ( <Is> | <LtLt> | <GtGt> ) |
ForwardStep | ::= | ( ( ForwardAxis NodeTest ) | AbbrevForwardStep ) |
ReverseStep | ::= | ( ( ReverseAxis ( NodeTest ) ) | AbbrevReverseStep ) |
AbbrevForwardStep | ::= | ( <At> )? NodeTest |
AbbrevReverseStep | ::= | <DotDot> |
ForwardAxis | ::= | ( <AxisChild> | <AxisDescendant> | <AxisAttribute> | <AxisSelf> | <AxisDescendantOrSelf> | <AxisFollowingSibling> | <AxisFollowing> | <AxisNamespace> ) |
ReverseAxis | ::= | ( <AxisParent> | <AxisAncestor> | <AxisPrecedingSibling> | <AxisPreceding> | <AxisAncestorOrSelf> ) |
NodeTest | ::= | ( KindTest | NameTest ) |
NameTest | ::= | ( <QName> | Wildcard ) |
Wildcard | ::= | ( <Star> | <NCNameColonStar> | <StarColonNCName> ) |
Literal | ::= | ( NumericLiteral | <StringLiteral> ) |
NumericLiteral | ::= | ( <IntegerLiteral> | <DecimalLiteral> | <DoubleLiteral> ) |
ParenthesizedExpr | ::= | <Lpar> ( Expr )? <Rpar> |
FunctionCall | ::= | ( <QNameLpar> | <IDLpar> | <KeyLpar> ) ( ExprSingle ( <Comma> ExprSingle )* )? <Rpar> |
SingleType | ::= | AtomicType ( <OccurrenceZeroOrOne> )? |
SequenceType | ::= | ( ( ItemType ( OccurrenceIndicator )? ) | <Empty> ) |
AtomicType | ::= | <QNameForSequenceType> |
ItemType | ::= | ( AtomicType | KindTest | <Item> ) |
KindTest | ::= | ( DocumentTest | ElementTest | AttributeTest | PITest | CommentTest | TextTest | AnyKindTest ) |
ElementTest | ::= | ( <ElementType> | <ElementTypeForKindTest> | <ElementTypeForDocumentTest> ) ( ( ( SchemaContextPath ElementName ) | ( ElementNameOrWildcard ( <CommaForKindTest> TypeNameOrWildcard ( <Nillable> )? )? ) ) )? <RparForKindTest> |
AttributeTest | ::= | ( <AttributeType> | <AttributeTypeForKindTest> ) ( ( ( SchemaContextPath AttributeName ) | ( AttribNameOrWildcard ( <CommaForKindTest> TypeNameOrWildcard )? ) ) )? <RparForKindTest> |
ElementName | ::= | <QNameForItemType> |
AttributeName | ::= | <QNameForItemType> |
TypeName | ::= | <QNameForItemType> |
ElementNameOrWildcard | ::= | ( ElementName | <AnyName> ) |
AttribNameOrWildcard | ::= | ( AttributeName | <AnyName> ) |
TypeNameOrWildcard | ::= | ( TypeName | <AnyName> ) |
PITest | ::= | ( <ProcessingInstructionLpar> | <ProcessingInstructionLparForKindTest> ) ( ( <NCNameForPI> | <StringLiteralForKindTest> ) )? <RparForKindTest> |
DocumentTest | ::= | ( <DocumentLpar> | <DocumentLparForKindTest> ) ( ElementTest )? <RparForKindTest> |
CommentTest | ::= | ( <CommentLpar> | <CommentLparForKindTest> ) <RparForKindTest> |
TextTest | ::= | ( <TextLpar> | <TextLparForKindTest> ) <RparForKindTest> |
AnyKindTest | ::= | ( <NodeLpar> | <NodeLparForKindTest> ) <RparForKindTest> |
SchemaContextPath | ::= | <SchemaGlobalContextSlash> ( <SchemaContextStepSlash> )* |
OccurrenceIndicator | ::= | ( <OccurrenceZeroOrOne> | <OccurrenceZeroOrMore> | <OccurrenceOneOrMore> ) |