r.grammar-demo.1.0.0-M19.source-code.Cypher.g4 Maven / Gradle / Ivy
/**
* Copyright (c) 2015-2022 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Attribution Notice under the terms of the Apache License 2.0
*
* This work was created by the collective efforts of the openCypher community.
* Without limiting the terms of Section 6, any Derivative Work that is not
* approved by the public consensus process of the openCypher Implementers Group
* should not be described as “Cypher” (and Cypher® is a registered trademark of
* Neo4j Inc.) or as "openCypher". Extensions by implementers or prototypes or
* proposals for change that have been documented or implemented should only be
* described as "implementation extensions to Cypher" or as "proposed changes to
* Cypher that are not yet approved by the openCypher community".
*/
grammar Cypher;
oC_Cypher
: SP? oC_Statement ( SP? ';' )? SP? EOF ;
oC_Statement
: oC_Query ;
oC_Query
: oC_RegularQuery
| oC_StandaloneCall
;
oC_RegularQuery
: oC_SingleQuery ( SP? oC_Union )* ;
oC_Union
: ( UNION SP ALL SP? oC_SingleQuery )
| ( UNION SP? oC_SingleQuery )
;
UNION : ( 'U' | 'u' ) ( 'N' | 'n' ) ( 'I' | 'i' ) ( 'O' | 'o' ) ( 'N' | 'n' ) ;
ALL : ( 'A' | 'a' ) ( 'L' | 'l' ) ( 'L' | 'l' ) ;
oC_SingleQuery
: oC_SinglePartQuery
| oC_MultiPartQuery
;
oC_SinglePartQuery
: ( ( oC_ReadingClause SP? )* oC_Return )
| ( ( oC_ReadingClause SP? )* oC_UpdatingClause ( SP? oC_UpdatingClause )* ( SP? oC_Return )? )
;
oC_MultiPartQuery
: ( ( oC_ReadingClause SP? )* ( oC_UpdatingClause SP? )* oC_With SP? )+ oC_SinglePartQuery ;
oC_UpdatingClause
: oC_Create
| oC_Merge
| oC_Delete
| oC_Set
| oC_Remove
;
oC_ReadingClause
: oC_Match
| oC_Unwind
| oC_InQueryCall
;
oC_Match
: ( OPTIONAL SP )? MATCH SP? oC_Pattern ( SP? oC_Where )? ;
OPTIONAL : ( 'O' | 'o' ) ( 'P' | 'p' ) ( 'T' | 't' ) ( 'I' | 'i' ) ( 'O' | 'o' ) ( 'N' | 'n' ) ( 'A' | 'a' ) ( 'L' | 'l' ) ;
MATCH : ( 'M' | 'm' ) ( 'A' | 'a' ) ( 'T' | 't' ) ( 'C' | 'c' ) ( 'H' | 'h' ) ;
oC_Unwind
: UNWIND SP? oC_Expression SP AS SP oC_Variable ;
UNWIND : ( 'U' | 'u' ) ( 'N' | 'n' ) ( 'W' | 'w' ) ( 'I' | 'i' ) ( 'N' | 'n' ) ( 'D' | 'd' ) ;
AS : ( 'A' | 'a' ) ( 'S' | 's' ) ;
oC_Merge
: MERGE SP? oC_PatternPart ( SP oC_MergeAction )* ;
MERGE : ( 'M' | 'm' ) ( 'E' | 'e' ) ( 'R' | 'r' ) ( 'G' | 'g' ) ( 'E' | 'e' ) ;
oC_MergeAction
: ( ON SP MATCH SP oC_Set )
| ( ON SP CREATE SP oC_Set )
;
ON : ( 'O' | 'o' ) ( 'N' | 'n' ) ;
CREATE : ( 'C' | 'c' ) ( 'R' | 'r' ) ( 'E' | 'e' ) ( 'A' | 'a' ) ( 'T' | 't' ) ( 'E' | 'e' ) ;
oC_Create
: CREATE SP? oC_Pattern ;
oC_Set
: SET SP? oC_SetItem ( SP? ',' SP? oC_SetItem )* ;
SET : ( 'S' | 's' ) ( 'E' | 'e' ) ( 'T' | 't' ) ;
oC_SetItem
: ( oC_PropertyExpression SP? '=' SP? oC_Expression )
| ( oC_Variable SP? '=' SP? oC_Expression )
| ( oC_Variable SP? '+=' SP? oC_Expression )
| ( oC_Variable SP? oC_NodeLabels )
;
oC_Delete
: ( DETACH SP )? DELETE SP? oC_Expression ( SP? ',' SP? oC_Expression )* ;
DETACH : ( 'D' | 'd' ) ( 'E' | 'e' ) ( 'T' | 't' ) ( 'A' | 'a' ) ( 'C' | 'c' ) ( 'H' | 'h' ) ;
DELETE : ( 'D' | 'd' ) ( 'E' | 'e' ) ( 'L' | 'l' ) ( 'E' | 'e' ) ( 'T' | 't' ) ( 'E' | 'e' ) ;
oC_Remove
: REMOVE SP oC_RemoveItem ( SP? ',' SP? oC_RemoveItem )* ;
REMOVE : ( 'R' | 'r' ) ( 'E' | 'e' ) ( 'M' | 'm' ) ( 'O' | 'o' ) ( 'V' | 'v' ) ( 'E' | 'e' ) ;
oC_RemoveItem
: ( oC_Variable oC_NodeLabels )
| oC_PropertyExpression
;
oC_InQueryCall
: CALL SP oC_ExplicitProcedureInvocation ( SP? YIELD SP oC_YieldItems )? ;
CALL : ( 'C' | 'c' ) ( 'A' | 'a' ) ( 'L' | 'l' ) ( 'L' | 'l' ) ;
YIELD : ( 'Y' | 'y' ) ( 'I' | 'i' ) ( 'E' | 'e' ) ( 'L' | 'l' ) ( 'D' | 'd' ) ;
oC_StandaloneCall
: CALL SP ( oC_ExplicitProcedureInvocation | oC_ImplicitProcedureInvocation ) ( SP? YIELD SP ( '*' | oC_YieldItems ) )? ;
oC_YieldItems
: oC_YieldItem ( SP? ',' SP? oC_YieldItem )* ( SP? oC_Where )? ;
oC_YieldItem
: ( oC_ProcedureResultField SP AS SP )? oC_Variable ;
oC_With
: WITH oC_ProjectionBody ( SP? oC_Where )? ;
WITH : ( 'W' | 'w' ) ( 'I' | 'i' ) ( 'T' | 't' ) ( 'H' | 'h' ) ;
oC_Return
: RETURN oC_ProjectionBody ;
RETURN : ( 'R' | 'r' ) ( 'E' | 'e' ) ( 'T' | 't' ) ( 'U' | 'u' ) ( 'R' | 'r' ) ( 'N' | 'n' ) ;
oC_ProjectionBody
: ( SP? DISTINCT )? SP oC_ProjectionItems ( SP oC_Order )? ( SP oC_Skip )? ( SP oC_Limit )? ;
DISTINCT : ( 'D' | 'd' ) ( 'I' | 'i' ) ( 'S' | 's' ) ( 'T' | 't' ) ( 'I' | 'i' ) ( 'N' | 'n' ) ( 'C' | 'c' ) ( 'T' | 't' ) ;
oC_ProjectionItems
: ( '*' ( SP? ',' SP? oC_ProjectionItem )* )
| ( oC_ProjectionItem ( SP? ',' SP? oC_ProjectionItem )* )
;
oC_ProjectionItem
: ( oC_Expression SP AS SP oC_Variable )
| oC_Expression
;
oC_Order
: ORDER SP BY SP oC_SortItem ( ',' SP? oC_SortItem )* ;
ORDER : ( 'O' | 'o' ) ( 'R' | 'r' ) ( 'D' | 'd' ) ( 'E' | 'e' ) ( 'R' | 'r' ) ;
BY : ( 'B' | 'b' ) ( 'Y' | 'y' ) ;
oC_Skip
: L_SKIP SP oC_Expression ;
L_SKIP : ( 'S' | 's' ) ( 'K' | 'k' ) ( 'I' | 'i' ) ( 'P' | 'p' ) ;
oC_Limit
: LIMIT SP oC_Expression ;
LIMIT : ( 'L' | 'l' ) ( 'I' | 'i' ) ( 'M' | 'm' ) ( 'I' | 'i' ) ( 'T' | 't' ) ;
oC_SortItem
: oC_Expression ( SP? ( ASCENDING | ASC | DESCENDING | DESC ) )? ;
ASCENDING : ( 'A' | 'a' ) ( 'S' | 's' ) ( 'C' | 'c' ) ( 'E' | 'e' ) ( 'N' | 'n' ) ( 'D' | 'd' ) ( 'I' | 'i' ) ( 'N' | 'n' ) ( 'G' | 'g' ) ;
ASC : ( 'A' | 'a' ) ( 'S' | 's' ) ( 'C' | 'c' ) ;
DESCENDING : ( 'D' | 'd' ) ( 'E' | 'e' ) ( 'S' | 's' ) ( 'C' | 'c' ) ( 'E' | 'e' ) ( 'N' | 'n' ) ( 'D' | 'd' ) ( 'I' | 'i' ) ( 'N' | 'n' ) ( 'G' | 'g' ) ;
DESC : ( 'D' | 'd' ) ( 'E' | 'e' ) ( 'S' | 's' ) ( 'C' | 'c' ) ;
oC_Where
: WHERE SP oC_Expression ;
WHERE : ( 'W' | 'w' ) ( 'H' | 'h' ) ( 'E' | 'e' ) ( 'R' | 'r' ) ( 'E' | 'e' ) ;
oC_Pattern
: oC_PatternPart ( SP? ',' SP? oC_PatternPart )* ;
oC_PatternPart
: ( oC_Variable SP? '=' SP? oC_AnonymousPatternPart )
| oC_AnonymousPatternPart
;
oC_AnonymousPatternPart
: oC_PatternElement ;
oC_PatternElement
: ( oC_NodePattern ( SP? oC_PatternElementChain )* )
| ( '(' oC_PatternElement ')' )
;
oC_NodePattern
: '(' SP? ( oC_Variable SP? )? ( oC_NodeLabels SP? )? ( oC_Properties SP? )? ')' ;
oC_PatternElementChain
: oC_RelationshipPattern SP? oC_NodePattern ;
oC_RelationshipPattern
: ( oC_LeftArrowHead SP? oC_Dash SP? oC_RelationshipDetail? SP? oC_Dash SP? oC_RightArrowHead )
| ( oC_LeftArrowHead SP? oC_Dash SP? oC_RelationshipDetail? SP? oC_Dash )
| ( oC_Dash SP? oC_RelationshipDetail? SP? oC_Dash SP? oC_RightArrowHead )
| ( oC_Dash SP? oC_RelationshipDetail? SP? oC_Dash )
;
oC_RelationshipDetail
: '[' SP? ( oC_Variable SP? )? ( oC_RelationshipTypes SP? )? oC_RangeLiteral? ( oC_Properties SP? )? ']' ;
oC_Properties
: oC_MapLiteral
| oC_Parameter
;
oC_RelationshipTypes
: ':' SP? oC_RelTypeName ( SP? '|' ':'? SP? oC_RelTypeName )* ;
oC_NodeLabels
: oC_NodeLabel ( SP? oC_NodeLabel )* ;
oC_NodeLabel
: ':' SP? oC_LabelName ;
oC_RangeLiteral
: '*' SP? ( oC_IntegerLiteral SP? )? ( '..' SP? ( oC_IntegerLiteral SP? )? )? ;
oC_LabelName
: oC_SchemaName ;
oC_RelTypeName
: oC_SchemaName ;
oC_Expression
: oC_OrExpression ;
oC_OrExpression
: oC_XorExpression ( SP OR SP oC_XorExpression )* ;
OR : ( 'O' | 'o' ) ( 'R' | 'r' ) ;
oC_XorExpression
: oC_AndExpression ( SP XOR SP oC_AndExpression )* ;
XOR : ( 'X' | 'x' ) ( 'O' | 'o' ) ( 'R' | 'r' ) ;
oC_AndExpression
: oC_NotExpression ( SP AND SP oC_NotExpression )* ;
AND : ( 'A' | 'a' ) ( 'N' | 'n' ) ( 'D' | 'd' ) ;
oC_NotExpression
: ( NOT SP? )* oC_ComparisonExpression ;
NOT : ( 'N' | 'n' ) ( 'O' | 'o' ) ( 'T' | 't' ) ;
oC_ComparisonExpression
: oC_AddOrSubtractExpression ( SP? oC_PartialComparisonExpression )* ;
oC_AddOrSubtractExpression
: oC_MultiplyDivideModuloExpression ( ( SP? '+' SP? oC_MultiplyDivideModuloExpression ) | ( SP? '-' SP? oC_MultiplyDivideModuloExpression ) )* ;
oC_MultiplyDivideModuloExpression
: oC_PowerOfExpression ( ( SP? '*' SP? oC_PowerOfExpression ) | ( SP? '/' SP? oC_PowerOfExpression ) | ( SP? '%' SP? oC_PowerOfExpression ) )* ;
oC_PowerOfExpression
: oC_UnaryAddOrSubtractExpression ( SP? '^' SP? oC_UnaryAddOrSubtractExpression )* ;
oC_UnaryAddOrSubtractExpression
: ( ( '+' | '-' ) SP? )* oC_StringListNullOperatorExpression ;
oC_StringListNullOperatorExpression
: oC_PropertyOrLabelsExpression ( oC_StringOperatorExpression | oC_ListOperatorExpression | oC_NullOperatorExpression )* ;
oC_ListOperatorExpression
: ( SP IN SP? oC_PropertyOrLabelsExpression )
| ( SP? '[' oC_Expression ']' )
| ( SP? '[' oC_Expression? '..' oC_Expression? ']' )
;
IN : ( 'I' | 'i' ) ( 'N' | 'n' ) ;
oC_StringOperatorExpression
: ( ( SP STARTS SP WITH ) | ( SP ENDS SP WITH ) | ( SP CONTAINS ) ) SP? oC_PropertyOrLabelsExpression ;
STARTS : ( 'S' | 's' ) ( 'T' | 't' ) ( 'A' | 'a' ) ( 'R' | 'r' ) ( 'T' | 't' ) ( 'S' | 's' ) ;
ENDS : ( 'E' | 'e' ) ( 'N' | 'n' ) ( 'D' | 'd' ) ( 'S' | 's' ) ;
CONTAINS : ( 'C' | 'c' ) ( 'O' | 'o' ) ( 'N' | 'n' ) ( 'T' | 't' ) ( 'A' | 'a' ) ( 'I' | 'i' ) ( 'N' | 'n' ) ( 'S' | 's' ) ;
oC_NullOperatorExpression
: ( SP IS SP NULL )
| ( SP IS SP NOT SP NULL )
;
IS : ( 'I' | 'i' ) ( 'S' | 's' ) ;
NULL : ( 'N' | 'n' ) ( 'U' | 'u' ) ( 'L' | 'l' ) ( 'L' | 'l' ) ;
oC_PropertyOrLabelsExpression
: oC_Atom ( SP? oC_PropertyLookup )* ( SP? oC_NodeLabels )? ;
oC_Atom
: oC_Literal
| oC_Parameter
| oC_CaseExpression
| ( COUNT SP? '(' SP? '*' SP? ')' )
| oC_ListComprehension
| oC_PatternComprehension
| ( ALL SP? '(' SP? oC_FilterExpression SP? ')' )
| ( ANY SP? '(' SP? oC_FilterExpression SP? ')' )
| ( NONE SP? '(' SP? oC_FilterExpression SP? ')' )
| ( SINGLE SP? '(' SP? oC_FilterExpression SP? ')' )
| oC_RelationshipsPattern
| oC_ParenthesizedExpression
| oC_FunctionInvocation
| oC_ExistentialSubquery
| oC_Variable
;
COUNT : ( 'C' | 'c' ) ( 'O' | 'o' ) ( 'U' | 'u' ) ( 'N' | 'n' ) ( 'T' | 't' ) ;
ANY : ( 'A' | 'a' ) ( 'N' | 'n' ) ( 'Y' | 'y' ) ;
NONE : ( 'N' | 'n' ) ( 'O' | 'o' ) ( 'N' | 'n' ) ( 'E' | 'e' ) ;
SINGLE : ( 'S' | 's' ) ( 'I' | 'i' ) ( 'N' | 'n' ) ( 'G' | 'g' ) ( 'L' | 'l' ) ( 'E' | 'e' ) ;
oC_Literal
: oC_NumberLiteral
| StringLiteral
| oC_BooleanLiteral
| NULL
| oC_MapLiteral
| oC_ListLiteral
;
oC_BooleanLiteral
: TRUE
| FALSE
;
TRUE : ( 'T' | 't' ) ( 'R' | 'r' ) ( 'U' | 'u' ) ( 'E' | 'e' ) ;
FALSE : ( 'F' | 'f' ) ( 'A' | 'a' ) ( 'L' | 'l' ) ( 'S' | 's' ) ( 'E' | 'e' ) ;
oC_ListLiteral
: '[' SP? ( oC_Expression SP? ( ',' SP? oC_Expression SP? )* )? ']' ;
oC_PartialComparisonExpression
: ( '=' SP? oC_AddOrSubtractExpression )
| ( '<>' SP? oC_AddOrSubtractExpression )
| ( '<' SP? oC_AddOrSubtractExpression )
| ( '>' SP? oC_AddOrSubtractExpression )
| ( '<=' SP? oC_AddOrSubtractExpression )
| ( '>=' SP? oC_AddOrSubtractExpression )
;
oC_ParenthesizedExpression
: '(' SP? oC_Expression SP? ')' ;
oC_RelationshipsPattern
: oC_NodePattern ( SP? oC_PatternElementChain )+ ;
oC_FilterExpression
: oC_IdInColl ( SP? oC_Where )? ;
oC_IdInColl
: oC_Variable SP IN SP oC_Expression ;
oC_FunctionInvocation
: oC_FunctionName SP? '(' SP? ( DISTINCT SP? )? ( oC_Expression SP? ( ',' SP? oC_Expression SP? )* )? ')' ;
oC_FunctionName
: oC_Namespace oC_SymbolicName ;
oC_ExistentialSubquery
: EXISTS SP? '{' SP? ( oC_RegularQuery | ( oC_Pattern ( SP? oC_Where )? ) ) SP? '}' ;
EXISTS : ( 'E' | 'e' ) ( 'X' | 'x' ) ( 'I' | 'i' ) ( 'S' | 's' ) ( 'T' | 't' ) ( 'S' | 's' ) ;
oC_ExplicitProcedureInvocation
: oC_ProcedureName SP? '(' SP? ( oC_Expression SP? ( ',' SP? oC_Expression SP? )* )? ')' ;
oC_ImplicitProcedureInvocation
: oC_ProcedureName ;
oC_ProcedureResultField
: oC_SymbolicName ;
oC_ProcedureName
: oC_Namespace oC_SymbolicName ;
oC_Namespace
: ( oC_SymbolicName '.' )* ;
oC_ListComprehension
: '[' SP? oC_FilterExpression ( SP? '|' SP? oC_Expression )? SP? ']' ;
oC_PatternComprehension
: '[' SP? ( oC_Variable SP? '=' SP? )? oC_RelationshipsPattern SP? ( oC_Where SP? )? '|' SP? oC_Expression SP? ']' ;
oC_PropertyLookup
: '.' SP? ( oC_PropertyKeyName ) ;
oC_CaseExpression
: ( ( CASE ( SP? oC_CaseAlternative )+ ) | ( CASE SP? oC_Expression ( SP? oC_CaseAlternative )+ ) ) ( SP? ELSE SP? oC_Expression )? SP? END ;
CASE : ( 'C' | 'c' ) ( 'A' | 'a' ) ( 'S' | 's' ) ( 'E' | 'e' ) ;
ELSE : ( 'E' | 'e' ) ( 'L' | 'l' ) ( 'S' | 's' ) ( 'E' | 'e' ) ;
END : ( 'E' | 'e' ) ( 'N' | 'n' ) ( 'D' | 'd' ) ;
oC_CaseAlternative
: WHEN SP? oC_Expression SP? THEN SP? oC_Expression ;
WHEN : ( 'W' | 'w' ) ( 'H' | 'h' ) ( 'E' | 'e' ) ( 'N' | 'n' ) ;
THEN : ( 'T' | 't' ) ( 'H' | 'h' ) ( 'E' | 'e' ) ( 'N' | 'n' ) ;
oC_Variable
: oC_SymbolicName ;
StringLiteral
: ( '"' ( StringLiteral_0 | EscapedChar )* '"' )
| ( '\'' ( StringLiteral_1 | EscapedChar )* '\'' )
;
EscapedChar
: '\\' ( '\\' | '\'' | '"' | ( 'B' | 'b' ) | ( 'F' | 'f' ) | ( 'N' | 'n' ) | ( 'R' | 'r' ) | ( 'T' | 't' ) | ( ( 'U' | 'u' ) ( HexDigit HexDigit HexDigit HexDigit ) ) | ( ( 'U' | 'u' ) ( HexDigit HexDigit HexDigit HexDigit HexDigit HexDigit HexDigit HexDigit ) ) ) ;
oC_NumberLiteral
: oC_DoubleLiteral
| oC_IntegerLiteral
;
oC_MapLiteral
: '{' SP? ( oC_PropertyKeyName SP? ':' SP? oC_Expression SP? ( ',' SP? oC_PropertyKeyName SP? ':' SP? oC_Expression SP? )* )? '}' ;
oC_Parameter
: '$' ( oC_SymbolicName | DecimalInteger ) ;
oC_PropertyExpression
: oC_Atom ( SP? oC_PropertyLookup )+ ;
oC_PropertyKeyName
: oC_SchemaName ;
oC_IntegerLiteral
: HexInteger
| OctalInteger
| DecimalInteger
;
HexInteger
: '0x' ( HexDigit )+ ;
DecimalInteger
: ZeroDigit
| ( NonZeroDigit ( Digit )* )
;
OctalInteger
: ZeroDigit ( OctDigit )+ ;
HexLetter
: ( 'A' | 'a' )
| ( 'B' | 'b' )
| ( 'C' | 'c' )
| ( 'D' | 'd' )
| ( 'E' | 'e' )
| ( 'F' | 'f' )
;
HexDigit
: Digit
| HexLetter
;
Digit
: ZeroDigit
| NonZeroDigit
;
NonZeroDigit
: NonZeroOctDigit
| '8'
| '9'
;
NonZeroOctDigit
: '1'
| '2'
| '3'
| '4'
| '5'
| '6'
| '7'
;
OctDigit
: ZeroDigit
| NonZeroOctDigit
;
ZeroDigit
: '0' ;
oC_DoubleLiteral
: ExponentDecimalReal
| RegularDecimalReal
;
ExponentDecimalReal
: ( ( Digit )+ | ( ( Digit )+ '.' ( Digit )+ ) | ( '.' ( Digit )+ ) ) ( 'E' | 'e' ) '-'? ( Digit )+ ;
RegularDecimalReal
: ( Digit )* '.' ( Digit )+ ;
oC_SchemaName
: oC_SymbolicName
| oC_ReservedWord
;
oC_ReservedWord
: ALL
| ASC
| ASCENDING
| BY
| CREATE
| DELETE
| DESC
| DESCENDING
| DETACH
| EXISTS
| LIMIT
| MATCH
| MERGE
| ON
| OPTIONAL
| ORDER
| REMOVE
| RETURN
| SET
| L_SKIP
| WHERE
| WITH
| UNION
| UNWIND
| AND
| AS
| CONTAINS
| DISTINCT
| ENDS
| IN
| IS
| NOT
| OR
| STARTS
| XOR
| FALSE
| TRUE
| NULL
| CONSTRAINT
| DO
| FOR
| REQUIRE
| UNIQUE
| CASE
| WHEN
| THEN
| ELSE
| END
| MANDATORY
| SCALAR
| OF
| ADD
| DROP
;
CONSTRAINT : ( 'C' | 'c' ) ( 'O' | 'o' ) ( 'N' | 'n' ) ( 'S' | 's' ) ( 'T' | 't' ) ( 'R' | 'r' ) ( 'A' | 'a' ) ( 'I' | 'i' ) ( 'N' | 'n' ) ( 'T' | 't' ) ;
DO : ( 'D' | 'd' ) ( 'O' | 'o' ) ;
FOR : ( 'F' | 'f' ) ( 'O' | 'o' ) ( 'R' | 'r' ) ;
REQUIRE : ( 'R' | 'r' ) ( 'E' | 'e' ) ( 'Q' | 'q' ) ( 'U' | 'u' ) ( 'I' | 'i' ) ( 'R' | 'r' ) ( 'E' | 'e' ) ;
UNIQUE : ( 'U' | 'u' ) ( 'N' | 'n' ) ( 'I' | 'i' ) ( 'Q' | 'q' ) ( 'U' | 'u' ) ( 'E' | 'e' ) ;
MANDATORY : ( 'M' | 'm' ) ( 'A' | 'a' ) ( 'N' | 'n' ) ( 'D' | 'd' ) ( 'A' | 'a' ) ( 'T' | 't' ) ( 'O' | 'o' ) ( 'R' | 'r' ) ( 'Y' | 'y' ) ;
SCALAR : ( 'S' | 's' ) ( 'C' | 'c' ) ( 'A' | 'a' ) ( 'L' | 'l' ) ( 'A' | 'a' ) ( 'R' | 'r' ) ;
OF : ( 'O' | 'o' ) ( 'F' | 'f' ) ;
ADD : ( 'A' | 'a' ) ( 'D' | 'd' ) ( 'D' | 'd' ) ;
DROP : ( 'D' | 'd' ) ( 'R' | 'r' ) ( 'O' | 'o' ) ( 'P' | 'p' ) ;
oC_SymbolicName
: UnescapedSymbolicName
| EscapedSymbolicName
| HexLetter
| COUNT
| FILTER
| EXTRACT
| ANY
| NONE
| SINGLE
;
FILTER : ( 'F' | 'f' ) ( 'I' | 'i' ) ( 'L' | 'l' ) ( 'T' | 't' ) ( 'E' | 'e' ) ( 'R' | 'r' ) ;
EXTRACT : ( 'E' | 'e' ) ( 'X' | 'x' ) ( 'T' | 't' ) ( 'R' | 'r' ) ( 'A' | 'a' ) ( 'C' | 'c' ) ( 'T' | 't' ) ;
UnescapedSymbolicName
: IdentifierStart ( IdentifierPart )* ;
/**
* Based on the unicode identifier and pattern syntax
* (http://www.unicode.org/reports/tr31/)
* And extended with a few characters.
*/
IdentifierStart
: ID_Start
| Pc
;
/**
* Based on the unicode identifier and pattern syntax
* (http://www.unicode.org/reports/tr31/)
* And extended with a few characters.
*/
IdentifierPart
: ID_Continue
| Sc
;
/**
* Any character except "`", enclosed within `backticks`. Backticks are escaped with double backticks.
*/
EscapedSymbolicName
: ( '`' ( EscapedSymbolicName_0 )* '`' )+ ;
SP
: ( WHITESPACE )+ ;
WHITESPACE
: SPACE
| TAB
| LF
| VT
| FF
| CR
| FS
| GS
| RS
| US
| '\u1680'
| '\u180e'
| '\u2000'
| '\u2001'
| '\u2002'
| '\u2003'
| '\u2004'
| '\u2005'
| '\u2006'
| '\u2008'
| '\u2009'
| '\u200a'
| '\u2028'
| '\u2029'
| '\u205f'
| '\u3000'
| '\u00a0'
| '\u2007'
| '\u202f'
| Comment
;
Comment
: ( '/*' ( Comment_1 | ( '*' Comment_2 ) )* '*/' )
| ( '//' ( Comment_3 )* CR? ( LF | EOF ) )
;
oC_LeftArrowHead
: '<'
| '\u27e8'
| '\u3008'
| '\ufe64'
| '\uff1c'
;
oC_RightArrowHead
: '>'
| '\u27e9'
| '\u3009'
| '\ufe65'
| '\uff1e'
;
oC_Dash
: '-'
| '\u00ad'
| '\u2010'
| '\u2011'
| '\u2012'
| '\u2013'
| '\u2014'
| '\u2015'
| '\u2212'
| '\ufe58'
| '\ufe63'
| '\uff0d'
;
fragment FF : [\f] ;
fragment EscapedSymbolicName_0 : ~[`] ;
fragment RS : [\u001E] ;
fragment ID_Continue : [\p{ID_Continue}] ;
fragment Comment_1 : ~[*] ;
fragment StringLiteral_1 : ~['\\] ;
fragment Comment_3 : ~[\n\r] ;
fragment Comment_2 : ~[/] ;
fragment GS : [\u001D] ;
fragment FS : [\u001C] ;
fragment CR : [\r] ;
fragment Sc : [\p{Sc}] ;
fragment SPACE : [ ] ;
fragment Pc : [\p{Pc}] ;
fragment TAB : [\t] ;
fragment StringLiteral_0 : ~["\\] ;
fragment LF : [\n] ;
fragment VT : [\u000B] ;
fragment US : [\u001F] ;
fragment ID_Start : [\p{ID_Start}] ;
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