START | ::= | ExprSingle <EOF> |
ExprSingle | ::= | OrExpr |
OperatorExpr | ::= | OrExpr |
OrExpr | ::= | AndExpr ( "or" AndExpr )* |
AndExpr | ::= | EqualityExpr ( "and" EqualityExpr )* |
EqualityExpr | ::= | RelationalExpr ( ( "=" | "!=" ) RelationalExpr )* |
RelationalExpr | ::= | AdditiveExpr ( ( <LeftAngleBracket> | ">" | "<=" | ">=" ) AdditiveExpr )* |
AdditiveExpr | ::= | MultiplicativeExpr ( ( <Plus> | <Minus> ) MultiplicativeExpr )* |
MultiplicativeExpr | ::= | UnaryExpr ( ( "*" | "div" | "mod" ) UnaryExpr )* |
UnaryExpr | ::= | ( <Minus> )* UnionExpr1 |
UnionExpr1 | ::= | ValueExpr ( "|" ValueExpr )* |
ValueExpr | ::= | ( ( FilterExpr ( ( <Slash> | <SlashSlash> ) RelativePathExpr )? ) | PathExpr ) |
PathExpr | ::= | ( ( <Slash> ( RelativePathExpr )? ) | ( <SlashSlash> RelativePathExpr ) | RelativePathExpr ) |
RelativePathExpr | ::= | StepExpr ( ( <Slash> | <SlashSlash> ) StepExpr )* |
StepExpr | ::= | ( AxisStep | ContextItemExpr | AbbrevReverseStep ) |
AxisStep | ::= | ( ReverseStep | ForwardStep ) PredicateList |
ForwardStep | ::= | ( ( ForwardAxis NodeTest ) | AbbrevForwardStep ) |
ForwardAxis | ::= | ( ( "child" "::" ) | ( "descendant" "::" ) | ( "attribute" "::" ) | ( "self" "::" ) | ( "descendant-or-self" "::" ) | ( "following-sibling" "::" ) | ( "following" "::" ) | ( "namespace" "::" ) ) |
AbbrevForwardStep | ::= | ( "@" )? NodeTest |
ReverseStep | ::= | ( ReverseAxis NodeTest ) |
ReverseAxis | ::= | ( ( "parent" "::" ) | ( "ancestor" "::" ) | ( "preceding-sibling" "::" ) | ( "preceding" "::" ) | ( "ancestor-or-self" "::" ) ) |
AbbrevReverseStep | ::= | ".." |
NodeTest | ::= | ( KindTest | NameTest ) |
NameTest | ::= | ( QName | Wildcard ) |
Wildcard | ::= | ( "*" | <NCNameColonStar> ) |
FilterExpr | ::= | PrimaryExpr PredicateList |
PredicateList | ::= | ( Predicate )* |
Predicate | ::= | "[" ExprSingle "]" |
PrimaryExpr | ::= | ( Literal | VarRef | ParenthesizedExpr | FunctionCall ) |
Literal | ::= | ( NumericLiteral | <StringLiteral> ) |
NumericLiteral | ::= | ( <IntegerLiteral> | <DecimalLiteral> ) |
VarRef | ::= | "$" VarName |
VarName | ::= | QName |
ParenthesizedExpr | ::= | "(" ExprSingle ")" |
ContextItemExpr | ::= | "." |
FunctionCall | ::= | FunctionQName ( "(" ( ExprSingle ( "," ExprSingle )* )? ")" ) |
KindTest | ::= | ( PITest | CommentTest | TextTest | AnyKindTest ) |
AnyKindTest | ::= | "node" "(" ")" |
TextTest | ::= | "text" "(" ")" |
CommentTest | ::= | "comment" "(" ")" |
PITest | ::= | "processing-instruction" "(" ( <StringLiteral> )? ")" |
NCName | ::= | QName |
QName | ::= | ( FunctionQName | "comment" | "node" | "processing-instruction" | "text" ) |
FunctionQName | ::= | ( <QNameToken> | "ancestor" | "ancestor-or-self" | "and" | "attribute" | "child" | "descendant" | "descendant-or-self" | "div" | "following" | "following-sibling" | "mod" | "namespace" | "or" | "parent" | "preceding" | "preceding-sibling" | "self" ) |