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(*
    Copyright © 2011 MLstate

    This file is part of OPA.

    OPA is free software: you can redistribute it and/or modify it under the
    terms of the GNU Affero General Public License, version 3, as published by
    the Free Software Foundation.

    OPA is distributed in the hope that it will be useful, but WITHOUT ANY
    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
    more details.

    You should have received a copy of the GNU Affero General Public License
    along with OPA. If not, see <http://www.gnu.org/licenses/>.
*)
+CompilationUnit <- Spacing? PackageDeclaration? ImportDeclaration* TypeDeclaration* EOT $

PackageDeclaration <- Annotation* PACKAGE QualifiedIdentifier SEMI $

ImportDeclaration <- IMPORT STATIC? QualifiedIdentifier ( DOT STAR $ )? SEMI $

TypeDeclaration <- Modifier* ( ClassDeclaration $ / EnumDeclaration $ / InterfaceDeclaration $ / AnnotationTypeDeclaration $ ) $ / SEMI $

ClassDeclaration <- CLASS Identifier TypeParameters? ( EXTENDS ClassType $ )? ( IMPLEMENTS ClassTypeList $ )? ClassBody $

ClassBody <- LWING ClassBodyDeclaration* RWING $

ClassBodyDeclaration <- SEMI $ / STATIC? Block $ / Modifier* MemberDecl $

MemberDecl <- TypeParameters GenericMethodOrConstructorRest $ / Type Identifier MethodDeclaratorRest $ / Type VariableDeclarators $ / VOID Identifier VoidMethodDeclaratorRest $ / Identifier ConstructorDeclaratorRest $ / InterfaceDeclaration $ / ClassDeclaration $ / EnumDeclaration $ / AnnotationTypeDeclaration $

GenericMethodOrConstructorRest <- ( Type $ / VOID $ ) Identifier MethodDeclaratorRest $ / Identifier ConstructorDeclaratorRest $

MethodDeclaratorRest <- FormalParameters Dim* ( THROWS ClassTypeList $ )? ( MethodBody $ / SEMI $ ) $

VoidMethodDeclaratorRest <- FormalParameters ( THROWS ClassTypeList $ )? ( MethodBody $ / SEMI $ ) $

ConstructorDeclaratorRest <- FormalParameters ( THROWS ClassTypeList $ )? MethodBody $

MethodBody <- Block $

InterfaceDeclaration <- INTERFACE Identifier TypeParameters? ( EXTENDS ClassTypeList $ )? InterfaceBody $

InterfaceBody <- LWING InterfaceBodyDeclaration* RWING $

InterfaceBodyDeclaration <- Modifier* InterfaceMemberDecl $ / SEMI $

InterfaceMemberDecl <- InterfaceMethodOrFieldDecl $ / InterfaceGenericMethodDecl $ / VOID Identifier VoidInterfaceMethodDeclaratorRest $ / InterfaceDeclaration $ / AnnotationTypeDeclaration $ / ClassDeclaration $ / EnumDeclaration $

InterfaceMethodOrFieldDecl <- Type Identifier InterfaceMethodOrFieldRest $

InterfaceMethodOrFieldRest <- ConstantDeclaratorsRest SEMI $ / InterfaceMethodDeclaratorRest $

InterfaceMethodDeclaratorRest <- FormalParameters Dim* ( THROWS ClassTypeList $ )? SEMI $

InterfaceGenericMethodDecl <- TypeParameters ( Type $ / VOID $ ) Identifier InterfaceMethodDeclaratorRest $

VoidInterfaceMethodDeclaratorRest <- FormalParameters ( THROWS ClassTypeList $ )? SEMI $

ConstantDeclaratorsRest <- ConstantDeclaratorRest ( COMMA ConstantDeclarator $ )* $

ConstantDeclarator <- Identifier ConstantDeclaratorRest $

ConstantDeclaratorRest <- Dim* EQU VariableInitializer $

EnumDeclaration <- ENUM Identifier ( IMPLEMENTS ClassTypeList $ )? EnumBody $

EnumBody <- LWING EnumConstants? COMMA? EnumBodyDeclarations? RWING $

EnumConstants <- EnumConstant ( COMMA EnumConstant $ )* $

EnumConstant <- Annotation* TypeArguments? Identifier Arguments? ClassBody? $

EnumBodyDeclarations <- SEMI ClassBodyDeclaration* $

LocalVariableDeclarationStatement <- FINAL? Type VariableDeclarators SEMI $

VariableDeclarators <- VariableDeclarator ( COMMA VariableDeclarator $ )* $

VariableDeclarator <- Identifier Dim* ( EQU VariableInitializer $ )? $

FormalParameters <- LPAR FormalParameterDecls? RPAR $

FormalParameter <- ( FINAL $ / Annotation $ )* Type VariableDeclaratorId $

FormalParameterDecls <- FINAL? Annotation* Type FormalParameterDeclsRest $

FormalParameterDeclsRest <- VariableDeclaratorId ( COMMA FormalParameterDecls $ )? $ / ELLIPSIS VariableDeclaratorId $

VariableDeclaratorId <- Identifier Dim* $

Block <- LWING BlockStatements RWING $

BlockStatements <- BlockStatement* $

BlockStatement <- LocalVariableDeclarationStatement $ / Modifier* ( ClassDeclaration $ / EnumDeclaration $ ) $ / Statement $

Statement <- Block $ / ASSERT Expression ( COLON Expression $ )? SEMI $ / IF ParExpression Statement ( ELSE Statement $ )? $ / FOR LPAR ForInit? SEMI Expression? SEMI ForUpdate? RPAR Statement $ / FOR LPAR FormalParameter COLON Expression RPAR Statement $ / WHILE ParExpression Statement $ / DO Statement WHILE ParExpression SEMI $ / TRY Block ( Catch+ Finally? $ / Finally $ ) $ / SWITCH ParExpression LWING SwitchBlockStatementGroups RWING $ / SYNCHRONIZED ParExpression Block $ / RETURN Expression? SEMI $ / THROW Expression SEMI $ / BREAK Identifier? SEMI $ / CONTINUE Identifier? SEMI $ / SEMI $ / StatementExpression SEMI $ / Identifier COLON Statement $

Catch <- CATCH LPAR FormalParameter RPAR Block $

Finally <- FINALLY Block $

SwitchBlockStatementGroups <- SwitchBlockStatementGroup* $

SwitchBlockStatementGroup <- SwitchLabel BlockStatements $

SwitchLabel <- CASE ConstantExpression COLON $ / CASE EnumConstantName COLON $ / DEFAULT COLON $

ForInit <- ( FINAL $ / Annotation $ )* Type VariableDeclarators $ / StatementExpression ( COMMA StatementExpression $ )* $

ForUpdate <- StatementExpression ( COMMA StatementExpression $ )* $

EnumConstantName <- Identifier $

StatementExpression <- Expression $

ConstantExpression <- Expression $

Expression <- ConditionalExpression ( AssignmentOperator ConditionalExpression $ )* $

AssignmentOperator <- EQU $ / PLUSEQU $ / MINUSEQU $ / STAREQU $ / DIVEQU $ / ANDEQU $ / OREQU $ / HATEQU $ / MODEQU $ / SLEQU $ / SREQU $ / BSREQU $

ConditionalExpression <- ConditionalOrExpression ( QUERY Expression COLON ConditionalOrExpression $ )* $

ConditionalOrExpression <- ConditionalAndExpression ( OROR ConditionalAndExpression $ )* $

ConditionalAndExpression <- InclusiveOrExpression ( ANDAND InclusiveOrExpression $ )* $

InclusiveOrExpression <- ExclusiveOrExpression ( OR ExclusiveOrExpression $ )* $

ExclusiveOrExpression <- AndExpression ( HAT AndExpression $ )* $

AndExpression <- EqualityExpression ( AND EqualityExpression $ )* $

EqualityExpression <- RelationalExpression ( ( EQUAL $ / NOTEQUAL $ ) RelationalExpression $ )* $

RelationalExpression <- ShiftExpression ( ( LE $ / GE $ / LT $ / GT $ ) ShiftExpression $ / INSTANCEOF ReferenceType $ )* $

ShiftExpression <- AdditiveExpression ( ( SL $ / SR $ / BSR $ ) AdditiveExpression $ )* $

AdditiveExpression <- MultiplicativeExpression ( ( PLUS $ / MINUS $ ) MultiplicativeExpression $ )* $

MultiplicativeExpression <- UnaryExpression ( ( STAR $ / DIV $ / MOD $ ) UnaryExpression $ )* $

UnaryExpression <- PrefixOp UnaryExpression $ / LPAR Type RPAR UnaryExpression $ / Primary ( Selector $ )* ( PostfixOp $ )* $

Primary <- ParExpression $ / NonWildcardTypeArguments ( ExplicitGenericInvocationSuffix $ / THIS Arguments $ ) $ / THIS Arguments? $ / SUPER SuperSuffix $ / Literal $ / NEW Creator $ / QualifiedIdentifier IdentifierSuffix? $ / BasicType Dim* DOT CLASS $ / VOID DOT CLASS $

IdentifierSuffix <- LBRK ( RBRK Dim* DOT CLASS $ / Expression RBRK $ ) $ / Arguments $ / DOT ( CLASS $ / ExplicitGenericInvocation $ / THIS $ / SUPER Arguments $ / NEW NonWildcardTypeArguments? InnerCreator $ ) $

ExplicitGenericInvocation <- NonWildcardTypeArguments ExplicitGenericInvocationSuffix $

NonWildcardTypeArguments <- LPOINT ReferenceType ( COMMA ReferenceType $ )* RPOINT $

ExplicitGenericInvocationSuffix <- SUPER SuperSuffix $ / Identifier Arguments $

PrefixOp <- INC $ / DEC $ / BANG $ / TILDA $ / PLUS $ / MINUS $

PostfixOp <- INC $ / DEC $

Selector <- DOT Identifier Arguments? $ / DOT ExplicitGenericInvocation $ / DOT THIS $ / DOT SUPER SuperSuffix $ / DOT NEW NonWildcardTypeArguments? InnerCreator $ / DimExpr $

SuperSuffix <- Arguments $ / DOT Identifier Arguments? $

BasicType <- ( "byte" $ / "short" $ / "char" $ / "int" $ / "long" $ / "float" $ / "double" $ / "boolean" $ ) !LetterOrDigit Spacing? $

Arguments <- LPAR ( Expression ( COMMA Expression $ )* $ )? RPAR $

Creator <- NonWildcardTypeArguments? CreatedName ClassCreatorRest $ / NonWildcardTypeArguments? ( ClassType $ / BasicType $ ) ArrayCreatorRest $

CreatedName <- Identifier NonWildcardTypeArguments? ( DOT Identifier NonWildcardTypeArguments? $ )* $

InnerCreator <- Identifier ClassCreatorRest $

ArrayCreatorRest <- LBRK ( RBRK Dim* ArrayInitializer $ / Expression RBRK DimExpr* Dim* $ ) $

ClassCreatorRest <- Arguments ClassBody? $

ArrayInitializer <- LWING ( VariableInitializer ( COMMA VariableInitializer $ )* COMMA? $ )? RWING $

VariableInitializer <- ArrayInitializer $ / Expression $

ParExpression <- LPAR Expression RPAR $

QualifiedIdentifier <- Identifier ( DOT Identifier $ )* $

Dim <- LBRK RBRK $

DimExpr <- LBRK Expression RBRK $

Type <- ( BasicType $ / ClassType $ ) Dim* $

ReferenceType <- BasicType Dim+ $ / ClassType Dim* $

ClassType <- Identifier TypeArguments? ( DOT Identifier TypeArguments? $ )* $

ClassTypeList <- ClassType ( COMMA ClassType $ )* $

TypeArguments <- LPOINT TypeArgument ( COMMA TypeArgument $ )* RPOINT $

TypeArgument <- ReferenceType $ / QUERY ( ( EXTENDS $ / SUPER $ ) ReferenceType $ )? $

TypeParameters <- LPOINT TypeParameter ( COMMA TypeParameter $ )* RPOINT $

TypeParameter <- Identifier ( EXTENDS Bound $ )? $

Bound <- ClassType ( AND ClassType $ )* $

Modifier <- Annotation $ / ( "public" $ / "protected" $ / "private" $ / "static" $ / "abstract" $ / "final" $ / "native" $ / "synchronized" $ / "transient" $ / "volatile" $ / "strictfp" $ ) !LetterOrDigit Spacing? $

AnnotationTypeDeclaration <- AT INTERFACE Identifier AnnotationTypeBody $

AnnotationTypeBody <- LWING AnnotationTypeElementDeclaration* RWING $

AnnotationTypeElementDeclaration <- Modifier* AnnotationTypeElementRest $

AnnotationTypeElementRest <- Type Identifier AnnotationMethodOrConstantRest SEMI $ / ClassDeclaration $ / EnumDeclaration $ / InterfaceDeclaration $ / AnnotationTypeDeclaration $

AnnotationMethodOrConstantRest <- AnnotationMethodRest $ / AnnotationConstantRest $

AnnotationMethodRest <- LPAR RPAR DefaultValue? $

AnnotationConstantRest <- VariableDeclarators $

DefaultValue <- DEFAULT ElementValue $

Annotation <- AT QualifiedIdentifier ( LPAR ( Identifier EQU $ )? ElementValue RPAR $ )? $

ElementValue <- ConditionalExpression $ / Annotation $ / ElementValueArrayInitializer $

ElementValueArrayInitializer <- LWING ElementValues? COMMA? RWING $

ElementValues <- ElementValue ( COMMA ElementValue $ )* $

Spacing <- ( [ \t\r\n\012]+ $ / "/*" ( !"*/" . $ )* "*/" $ / "//" ( ![\r\n] . $ )* [\r\n] $ )* $

Identifier <- !Keyword Letter LetterOrDigit* Spacing? $

Letter <- [a-z] $ / [A-Z] $ / [_$] $

LetterOrDigit <- [a-z] $ / [A-Z] $ / [0-9] $ / [_$] $

Keyword <- ( "abstract" $ / "assert" $ / "boolean" $ / "break" $ / "byte" $ / "case" $ / "catch" $ / "char" $ / "class" $ / "continue" $ / "default" $ / "double" $ / "do" $ / "else" $ / "enum" $ / "extends" $ / "false" $ / "finally" $ / "final" $ / "float" $ / "for" $ / "if" $ / "implements" $ / "import" $ / "interface" $ / "int" $ / "instanceof" $ / "long" $ / "native" $ / "new" $ / "null" $ / "package" $ / "private" $ / "protected" $ / "public" $ / "return" $ / "short" $ / "static" $ / "strictfp" $ / "super" $ / "switch" $ / "synchronized" $ / "this" $ / "threadsafe" $ / "throws" $ / "throw" $ / "transient" $ / "true" $ / "try" $ / "void" $ / "volatile" $ / "while" $ ) !LetterOrDigit $

ASSERT <- "assert" !LetterOrDigit Spacing? $

BREAK <- "break" !LetterOrDigit Spacing? $

CASE <- "case" !LetterOrDigit Spacing? $

CATCH <- "catch" !LetterOrDigit Spacing? $

CLASS <- "class" !LetterOrDigit Spacing? $

CONTINUE <- "continue" !LetterOrDigit Spacing? $

DEFAULT <- "default" !LetterOrDigit Spacing? $

DO <- "do" !LetterOrDigit Spacing? $

ELSE <- "else" !LetterOrDigit Spacing? $

ENUM <- "enum" !LetterOrDigit Spacing? $

EXTENDS <- "extends" !LetterOrDigit Spacing? $

FINALLY <- "finally" !LetterOrDigit Spacing? $

FINAL <- "final" !LetterOrDigit Spacing? $

FOR <- "for" !LetterOrDigit Spacing? $

IF <- "if" !LetterOrDigit Spacing? $

IMPLEMENTS <- "implements" !LetterOrDigit Spacing? $

IMPORT <- "import" !LetterOrDigit Spacing? $

INTERFACE <- "interface" !LetterOrDigit Spacing? $

INSTANCEOF <- "instanceof" !LetterOrDigit Spacing? $

NEW <- "new" !LetterOrDigit Spacing? $

PACKAGE <- "package" !LetterOrDigit Spacing? $

RETURN <- "return" !LetterOrDigit Spacing? $

STATIC <- "static" !LetterOrDigit Spacing? $

SUPER <- "super" !LetterOrDigit Spacing? $

SWITCH <- "switch" !LetterOrDigit Spacing? $

SYNCHRONIZED <- "synchronized" !LetterOrDigit Spacing? $

THIS <- "this" !LetterOrDigit Spacing? $

THROWS <- "throws" !LetterOrDigit Spacing? $

THROW <- "throw" !LetterOrDigit Spacing? $

TRY <- "try" !LetterOrDigit Spacing? $

VOID <- "void" !LetterOrDigit Spacing? $

WHILE <- "while" !LetterOrDigit Spacing? $

Literal <- ( FloatLiteral $ / IntegerLiteral $ / CharLiteral $ / StringLiteral $ / "true" !LetterOrDigit $ / "false" !LetterOrDigit $ / "null" !LetterOrDigit $ ) Spacing? $

IntegerLiteral <- ( HexNumeral $ / OctalNumeral $ / DecimalNumeral $ ) [lL]? $

DecimalNumeral <- "0" $ / [1-9] Digit* $

HexNumeral <- ( "0x" $ / "0X" $ ) HexDigit+ $

HexDigit <- [a-f] $ / [A-F] $ / [0-9] $

OctalNumeral <- "0" [0-7]+ $

FloatLiteral <- HexFloat $ / DecimalFloat $

DecimalFloat <- Digit+ "." Digit* Exponent? [fFdD]? $ / "." Digit+ Exponent? [fFdD]? $ / Digit+ Exponent [fFdD]? $ / Digit+ Exponent? [fFdD] $

Exponent <- [eE] [+\-]? Digit+ $

Digit <- [0-9] $

HexFloat <- HexSignificand BinaryExponent [fFdD]? $

HexSignificand <- HexNumeral "."? $ / ( "0x" $ / "0X" $ ) HexDigit* "." HexDigit+ $

BinaryExponent <- [pP] [+\-]? Digit+ $

CharLiteral <- "'" ( Escape $ / ![\'\\] . $ ) "'" $

StringLiteral <- "\"" ( Escape $ / !["\\] . $ )* "\"" $

Escape <- "\\" ( [btnfr"\'\\] $ / OctalEscape $ / UnicodeEscape $ ) $

OctalEscape <- [0-3] [0-7] [0-7] $ / [0-7] [0-7] $ / [0-7] $

UnicodeEscape <- "u" HexDigit HexDigit HexDigit HexDigit $

AT <- "@" Spacing? $

AND <- "&" ![=&] Spacing? $

ANDAND <- "&&" Spacing? $

ANDEQU <- "&=" Spacing? $

BANG <- "!" !"=" Spacing? $

BSR <- ">>>" !"=" Spacing? $

BSREQU <- ">>>=" Spacing? $

COLON <- ":" Spacing? $

COMMA <- "," Spacing? $

DEC <- "--" Spacing? $

DIV <- "/" !"=" Spacing? $

DIVEQU <- "/=" Spacing? $

DOT <- "." Spacing? $

ELLIPSIS <- "..." Spacing? $

EQU <- "=" !"=" Spacing? $

EQUAL <- "==" Spacing? $

GE <- ">=" Spacing? $

GT <- ">" ![=>] Spacing? $

HAT <- "^" !"=" Spacing? $

HATEQU <- "^=" Spacing? $

INC <- "++" Spacing? $

LBRK <- "[" Spacing? $

LE <- "<=" Spacing? $

LPAR <- "(" Spacing? $

LPOINT <- "<" Spacing? $

LT <- "<" ![=<] Spacing? $

LWING <- "{" Spacing? $

MINUS <- "-" ![=\-] Spacing? $

MINUSEQU <- "-=" Spacing? $

MOD <- "%" !"=" Spacing? $

MODEQU <- "%=" Spacing? $

NOTEQUAL <- "!=" Spacing? $

OR <- "|" ![=|] Spacing? $

OREQU <- "|=" Spacing? $

OROR <- "||" Spacing? $

PLUS <- "+" ![=+] Spacing? $

PLUSEQU <- "+=" Spacing? $

QUERY <- "?" Spacing? $

RBRK <- "]" Spacing? $

RPAR <- ")" Spacing? $

RPOINT <- ">" Spacing? $

RWING <- "}" Spacing? $

SEMI <- ";" Spacing? $

SL <- "<<" !"=" Spacing? $

SLEQU <- "<<=" Spacing? $

SR <- ">>" ![=>] Spacing? $

SREQU <- ">>=" Spacing? $

STAR <- "*" !"=" Spacing? $

STAREQU <- "*=" Spacing? $

TILDA <- "~" Spacing? $

EOT <- !. $
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