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+/*
+Author: Sorin Stancu-Mara, Andrei Aiordachioaie
+History: 
+07 02 2007 smsorin	Updated to WCPS 1.0.0
+27 01 2009 smsorin	Moved to ANTLR
+11 02 2009 andreia	Updated to new grammar (spec 08-068r2)
+13 02 2009 andreia	Fixed small bugs in grammar. Now it can fully compile.
+21 04 2009 andreia	Removed comments.
+04 05 2009 andreia	Fixed bugs in integer declaration.
+19 05 2009 andreia	Fixed some other weird bugs. Grammar passes all tests now.
+28 05 2009 andreia	Updated class actions names.
+02 06 2009 andreia	Removed brackets around "and" binary operator in CoverageExpr
+03 06 2009 andreia	Complex expressions introduced in the "using" clause of general condense operations
+05 08 2009 andreia	Fixed definition of integer and floating-point numbers.
+*/
+grammar wcps_no_actions;
+options{
+backtrack=true;
+memoize=true;
+k=2;
+language=Java;
+output=AST;
+}
+
+/* Parser Rules */
+
+wcpsRequest
+	:	e1=forClause 
+		(e2=whereClause  )?
+		e3=returnClause 
+	;
+forClause
+	: FOR v=coverageVariable IN LPAREN list=coverageList RPAREN
+		
+	  (COMMA v=coverageVariable IN LPAREN list=coverageList RPAREN
+	  	)*
+	;
+whereClause
+	: WHERE e1=booleanScalarExpr 
+	;
+returnClause
+	:	RETURN e1=processingExpr 
+	;
+coverageList
+	:	cname=coverageName 
+		(COMMA next=coverageName )*
+	;
+processingExpr
+    : e1=encodedCoverageExpr 
+    | e2=storeExpr 
+    | e3=scalarExpr 
+    ;
+encodedCoverageExpr
+	: ENCODE LPAREN cov=coverageExpr COMMA format=stringConstant 
+	 (COMMA params=stringConstant )?  RPAREN
+  ;
+storeExpr
+    : STORE LPAREN e1=encodedCoverageExpr RPAREN 
+    ;
+coverageExpr
+    : e1=coverageLogicTerm  
+        (op=(OR|XOR) e2=coverageLogicTerm  )*
+    ;
+coverageLogicTerm
+    : e1=coverageLogicFactor  
+        (op=AND e2=coverageLogicFactor  )*
+    ;
+coverageLogicFactor 
+    : e1=coverageArithmeticExpr  
+        (op=(EQUALS|NOTEQUALS|LT|GT|LTE|GTE) e2=coverageArithmeticExpr   )?
+    ;
+coverageArithmeticExpr 
+    : e1=coverageArithmeticTerm  
+        (op=(PLUS|MINUS) e2=coverageArithmeticTerm  )*
+    ;
+coverageArithmeticTerm
+    :   e1=coverageArithmeticFactor 
+        (op=(MULT|DIVIDE) e2=coverageArithmeticFactor   )*
+    ;
+coverageArithmeticFactor 
+    : e1=coverageValue 
+        (op=OVERLAY e2=coverageValue  )*
+    ;
+coverageValue
+    : e5=subsetExpr  
+    | e2=unaryInducedExpr 
+    | e4=scaleExpr 
+    | e3=crsTransformExpr 
+    | e1=coverageAtom 
+    ;
+coverageAtom
+    : e2=scalarExpr 
+    | e1=coverageVariable 
+    | LPAREN e7=coverageExpr RPAREN  
+    | e3=coverageConstantExpr 
+    | e4=coverageConstructorExpr  
+    | e5=setMetaDataExpr  
+    | e6=rangeConstructorExpr  
+    ;
+scalarExpr
+    : e1=metaDataExpr  
+    | e2=condenseExpr  
+    | e3=booleanScalarExpr   
+    | e4=numericScalarExpr  
+    | e5=stringScalarExpr  
+    | LPAREN e6=scalarExpr RPAREN  
+    ;
+metaDataExpr
+    : op=IDENTIFIER LPAREN e1=coverageExpr RPAREN 
+    | op=IMAGECRS LPAREN e1=coverageExpr RPAREN 
+    | op=IMAGECRSDOMAIN LPAREN e1=coverageExpr (COMMA e2=axisName)? RPAREN 
+    | op=CRSSET LPAREN e1=coverageExpr RPAREN 
+    | de=domainExpr 
+    | op=NULLSET LPAREN e1=coverageExpr RPAREN 
+    | op=INTERPOLATIONDEFAULT LPAREN e1=coverageExpr COMMA f1=fieldName RPAREN 
+    | op=INTERPOLATIONSET LPAREN e1=coverageExpr COMMA f1=fieldName RPAREN  
+    ;
+domainExpr
+	: DOMAIN LPAREN var=coverageVariable COMMA axis=axisName COMMA crs=crsName RPAREN 
+	;
+condenseExpr
+	: e1=reduceExpr 
+	| e2=generalCondenseExpr 
+	;
+reduceExpr
+	: op=(ALL|SOME|COUNT|ADD|AVG|MIN|MAX) LPAREN e1=coverageExpr RPAREN 
+	;
+generalCondenseExpr
+	: CONDENSE op=condenseOpType OVER ail=axisIteratorList 
+		(WHERE cond=booleanScalarExpr )?
+		(USING ce=coverageExpr)
+	;
+axisIteratorList
+	: vn=variableName an=axisName LPAREN ie=intervalExpr RPAREN
+		
+	(COMMA vn2=variableName an2=axisName LPAREN ie2=intervalExpr RPAREN
+		)*
+	;
+intervalExpr
+    : lo=indexExpr COLON hi=indexExpr
+    	
+    | IMAGECRSDOMAIN LPAREN e1=coverageName COMMA e2=axisName RPAREN
+    	
+    ;
+coverageConstantExpr
+    : COVERAGE aname=coverageName OVER iter=axisIteratorList VALUE LIST LT values=constantList GT
+        
+    ;
+constantList
+    : c=constant  (SEMICOLON c=constant )*
+    ;
+coverageConstructorExpr
+	: COVERAGE coverage=coverageName OVER ail=axisIteratorList VALUES se=scalarExpr
+		
+	;
+setMetaDataExpr
+    : op=SETIDENTIFIER LPAREN s=stringConstant COMMA e1=coverageExpr RPAREN
+	
+    | op=SETCRSSET LPAREN e1=coverageExpr COMMA crs=crsList RPAREN
+    	
+    | op=SETNULLSET LPAREN e1=coverageExpr COMMA rel=rangeExprList RPAREN
+    	
+    | op=SETINTERPOLATIONDEFAULT LPAREN e1=coverageExpr COMMA fn=fieldName COMMA im=interpolationMethod RPAREN
+        
+    | op=SETINTERPOLATIONSET LPAREN e1=coverageExpr COMMA fn=fieldName COMMA iml=interpolationMethodList RPAREN
+        
+    ;
+crsList
+    : LBRACE  (crs=crsName  (COMMA crs=crsName )* )? RBRACE
+    ;
+rangeExprList
+    : LBRACE  (re1=rangeExpr  (COMMA re2=rangeExpr )* )? RBRACE
+    ;
+interpolationMethodList
+	: LBRACE  (e=interpolationMethod  (COMMA e=interpolationMethod )*)? RBRACE
+	;
+rangeExpr
+	: STRUCT LBRACE 
+	(field=fieldName COLON expr=scalarExpr 
+		(COLON field=fieldName COLON expr=scalarExpr )*
+	)?  RBRACE
+	;
+rangeConstructorExpr
+    : (STRUCT)? LBRACE field=fieldName COLON expr=coverageExpr 
+        (SEMICOLON field=fieldName COLON expr=coverageExpr )* RBRACE
+    ;
+crsTransformExpr
+	: CRSTRANSFORM LPAREN e1=coverageExpr COMMA dcl=dimensionIntervalList COMMA fil=fieldInterpolationList RPAREN
+		
+	;
+fieldInterpolationList
+	: LBRACE elem=fieldInterpolationElement 
+		(COMMA elem=fieldInterpolationElement ) * RBRACE
+	;
+fieldInterpolationElement
+	: aname=fieldName method=interpolationMethod 
+	;
+unaryInducedExpr
+    : e6=fieldExpr 
+	| e1=unaryArithmeticExpr 
+    | e2=exponentialExpr 
+    | e3=trigonometricExpr 
+    | e4=booleanExpr 
+    | e5=castExpr 
+    | e7=rangeConstructorExpr 
+    ;
+unaryArithmeticExpr
+    : op=(MINUS|PLUS) e1=coverageAtom 
+    | op=(SQRT|ABS|RE|IM) LPAREN e2=coverageExpr RPAREN 
+    ;
+exponentialExpr
+    : op=(EXP|LOG|LN) LPAREN e1=coverageExpr RPAREN 
+    ;
+trigonometricExpr
+    : op=(SIN|COS|TAN|SINH|COSH|TANH|ARCSIN|ARCCOS|ARCTAN) LPAREN e1=coverageExpr RPAREN 
+    ;
+booleanExpr
+    : op=NOT e1=coverageExpr 
+    | op=BIT LPAREN e1=coverageExpr COMMA e2=indexExpr RPAREN 
+    ;
+indexExpr
+    : e1=indexTerm  
+		(op=(PLUS|MINUS) e2=indexTerm )*
+    ;
+indexTerm
+    : e1=indexFactor 
+    	((op=(MULT|DIVIDE) e2=indexFactor  ))*
+    ;
+indexFactor
+    : e=INTEGERCONSTANT  
+    | op=ROUND LPAREN e1=numericScalarExpr RPAREN  
+    | (LPAREN e2=indexExpr RPAREN  )
+    ;
+stringScalarExpr 
+// The first rule should be "metaDataExpr", but currently only a variable "identifier" is allowed.
+    : op=IDENTIFIER LPAREN e1=coverageExpr RPAREN  
+    | e=STRING 
+    ;
+scaleExpr
+	: SCALE LPAREN e1=coverageExpr COMMA dil=dimensionIntervalList COMMA fil=fieldInterpolationList RPAREN
+		
+	;
+subsetExpr
+	: e1=trimExpr 
+	| e2=sliceExpr 
+	| e3=extendExpr 
+	;
+trimExpr
+	: e1=coverageAtom LBRACKET dil=dimensionIntervalList RBRACKET 
+  	| TRIM LPAREN e2=coverageExpr COMMA LBRACE dil=dimensionIntervalList RBRACE RPAREN 
+	;
+sliceExpr
+	: e1=coverageAtom LBRACKET dpl=dimensionPointList RBRACKET 
+	| SLICE LPAREN e2=coverageExpr COMMA LBRACE dpl=dimensionPointList RBRACE RPAREN 
+	;
+extendExpr
+	: EXTEND LPAREN e1=coverageExpr COMMA dil=dimensionIntervalList RPAREN 
+	;
+castExpr
+    : LPAREN e1=rangeType RPAREN e2=coverageExpr 
+    ;
+rangeType
+    : type=(BOOLEAN|CHAR|SHORT|LONG|FLOAT|DOUBLE|COMPLEX|COMPLEX2) 
+    | UNSIGNED type=(CHAR|SHORT|LONG) 
+    ;
+fieldExpr
+    : e1=coverageAtom DOT e2=fieldName 
+    ;
+// NOTE: The following boolean rules are equivalent to the grammar rules in document 08-068r2
+// They have been rewritten in order to prioritize the boolean operators
+booleanScalarExpr
+    : e1=booleanScalarTerm 
+      (op=(OR|XOR) e2=booleanScalarTerm )*
+    ;
+booleanScalarTerm
+	: e1=booleanScalarNegation 
+	  (op=AND e2=booleanScalarNegation  )*
+	;
+booleanScalarNegation 
+	:	e1=booleanScalarAtom 
+	|	op=NOT e1=booleanScalarAtom 
+	;
+booleanScalarAtom
+	: LPAREN e1=booleanScalarExpr RPAREN 
+	| s1=stringScalarExpr cop=compOp s2=stringScalarExpr  
+	| n1=numericScalarExpr cop=compOp n2=numericScalarExpr  
+	| e=BOOLEANCONSTANT 
+	;
+numericScalarExpr
+	: e1=numericScalarTerm 
+	  (op=(PLUS|MINUS) e2=numericScalarTerm )*
+	;
+numericScalarTerm
+	: e1=numericScalarFactor 
+		(op=(MULT|DIVIDE) e2=numericScalarFactor )*
+	;
+numericScalarFactor
+    : LPAREN e1=numericScalarExpr RPAREN 
+    | op=MINUS e10=numericScalarFactor 
+    | op=ROUND LPAREN e1=numericScalarExpr RPAREN 
+    | e=INTEGERCONSTANT 
+    | e=FLOATCONSTANT 
+    | e2=complexConstant 
+    | e3=condenseExpr 
+    | e4=variableName
+    ;
+compOp
+	: EQUALS 
+	| NOTEQUALS 
+	| LT 
+	| GT 
+	| LTE 
+	| GTE 
+	;
+dimensionIntervalList
+    : elem=dimensionIntervalElement 
+        (COMMA elem=dimensionIntervalElement )*
+    ;
+dimensionIntervalElement
+    : aname=axisName  (COLON crs=crsName )?
+    	LPAREN die=dimensionIntervalExpr RPAREN 
+    ;
+dimensionIntervalExpr
+    : e1=scalarExpr COLON e2=scalarExpr 
+    | DOMAIN LPAREN e3=coverageName COLON e4=axisName COLON e5=crsName RPAREN 
+    ;
+dimensionPointList
+    : elem1=dimensionPointElement 
+    	(COMMA elem2=dimensionPointElement )*
+    ;
+dimensionPointElement
+    : aname=axisName LPAREN dpe=dimensionPoint RPAREN 
+    | aname=axisName COLON crs=crsName LPAREN dpe=dimensionPoint RPAREN 
+    ;
+dimensionPoint
+    : e1=scalarExpr 
+    ;
+interpolationMethod
+	: LPAREN type=interpolationType COLON res=nullResistence RPAREN 
+	;
+interpolationType
+	: type=(NEAREST|LINEAR|QUADRATIC|CUBIC) 
+	;
+nullResistence
+	: resistance=(FULL|NONE|HALF|OTHER) 
+	;
+condenseOpType
+	: op=(PLUS|MULT|MAX|MIN|AND|OR) 
+	;
+fieldName
+	: name 
+	;
+constant
+	: e=(STRING|BOOLEANCONSTANT|INTEGERCONSTANT|FLOATCONSTANT) 
+	| e1=complexConstant 
+	;
+complexConstant
+	: LPAREN re1=FLOATCONSTANT COMMA im1=FLOATCONSTANT RPAREN 
+	;
+stringConstant
+	: s=STRING 
+	;
+name
+	: var=(NAME | STRING | INTEGERCONSTANT) 
+	;
+crsName
+	: s=stringConstant 
+	;
+axisName
+	: type1=name 
+	;
+variableName
+	: var=VARIABLE_DOLLAR
+	;
+coverageVariable
+	: var=NAME
+	;
+coverageName
+	: name 
+	;
+
+	
+/* Lexer rules */
+PLUS:	 '+';
+MINUS:	 '-';
+DIVIDE: '/';
+MULT: '*';
+EQUALS: '=';
+NOTEQUALS: '!=';
+LT: '<';
+GT: '>';
+LTE: '<=';
+GTE: '>=';
+DOT: '.';
+LPAREN: '(';
+RPAREN: ')';
+LBRACKET: '[';
+RBRACKET: ']';
+LBRACE: '{';
+RBRACE: '}';
+COMMA: ',';
+COLON: ':';
+SEMICOLON: ';';
+FOR: ('f'|'F')('o'|'O')('r'|'R');
+IN:	('i'|'I')('n'|'N');
+WHERE: ('w'|'W')('h'|'H')('e'|'E')('r'|'R')('e'|'E');
+RETURN: ('r'|'R')('e'|'E')('t'|'T')('u'|'U')('r'|'R')('n'|'N');
+STORE: ('s'|'S')('t'|'T')('o'|'O')('r'|'R')('e'|'E');
+ENCODE: ('e'|'E')('n'|'N')('c'|'C')('o'|'O')('d'|'D')('e'|'E');
+SQRT: ('s'|'S')('q'|'Q')('r'|'R')('t'|'T');
+SIN: ('s'|'S')('i'|'I')('n'|'N');
+COS: ('c'|'C')('o'|'O')('s'|'S');
+TAN: ('t'|'T')('a'|'A')('n'|'N');
+SINH: ('s'|'S')('i'|'I')('n'|'N')('h'|'H');
+COSH: ('c'|'C')('o'|'O')('s'|'S')('h'|'H');
+TANH: ('t'|'T')('a'|'A')('n'|'N')('h'|'H');
+ARCSIN: ('a'|'A')('r'|'R')('c'|'C')('s'|'S')('i'|'I')('n'|'N');
+ARCCOS: ('a'|'A')('r'|'R')('c'|'C')('c'|'C')('o'|'O')('s'|'S');
+ARCTAN: ('a'|'A')('r'|'R')('c'|'C')('t'|'T')('a'|'A')('n'|'N');
+EXP: ('e'|'E')('x'|'X')('p'|'P');
+LN: ('l'|'L')('n'|'N');
+LOG: ('l'|'L')('o'|'O')('g'|'G');
+ROUND: ('r'|'R')('o'|'O')('u'|'U')('n'|'N')('d'|'D');
+ABS: ('a'|'A')('b'|'B')('s'|'S');
+OVERLAY: ('o'|'O')('v'|'V')('e'|'E')('r'|'R')('l'|'L')('a'|'A')('y'|'Y');
+STRUCT: ('s'|'S')('t'|'T')('r'|'R')('u'|'U')('c'|'C')('t'|'T');
+RE: ('r'|'R')('e'|'E');
+IM: ('i'|'I')('m'|'M');
+AND: ('a'|'A')('n'|'N')('d'|'D');
+OR: ('o'|'O')('r'|'R');
+XOR: ('x'|'X')('o'|'O')('r'|'R');
+NOT: ('n'|'N')('o'|'O')('t'|'T');
+IDENTIFIER: ('i'|'I')('d'|'D')('e'|'E')('n'|'N')('t'|'T')('i'|'I')('f'|'F')('i'|'I')('e'|'E')('r'|'R');
+IMAGECRS: ('i'|'I')('m'|'M')('a'|'A')('g'|'G')('e'|'E')('c'|'C')('r'|'R')('s'|'S');
+IMAGECRSDOMAIN: ('i'|'I')('m'|'M')('a'|'A')('g'|'G')('e'|'E')('c'|'C')('r'|'R')('s'|'S')('d'|'D')('o'|'O')('m'|'M')('a'|'A')('i'|'I')('n'|'N');
+CRSSET: ('c'|'C')('r'|'R')('s'|'S')('s'|'S')('e'|'E')('t'|'T');
+DOMAIN: ('d'|'D')('o'|'O')('m'|'M')('a'|'A')('i'|'I')('n'|'N');
+NULLSET: ('n'|'N')('u'|'U')('l'|'L')('l'|'L')('s'|'S')('e'|'E')('t'|'T');
+NULLDEFAULT: ('n'|'N')('u'|'U')('l'|'L')('l'|'L')('d'|'D')('e'|'E')('f'|'F')('a'|'A')('u'|'U')('l'|'L')('t'|'T');
+INTERPOLATIONDEFAULT: ('i'|'I')('n'|'N')('t'|'T')('e'|'E')('r'|'R')('p'|'P')('o'|'O')('l'|'L')('a'|'A')('t'|'T')('i'|'I')('o'|'O')('n'|'N')('d'|'D')('e'|'E')('f'|'F')('a'|'A')('u'|'U')('l'|'L')('t'|'T');
+INTERPOLATIONSET: ('i'|'I')('n'|'N')('t'|'T')('e'|'E')('r'|'R')('p'|'P')('o'|'O')('l'|'L')('a'|'A')('t'|'T')('i'|'I')('o'|'O')('n'|'N')('s'|'S')('e'|'E')('t'|'T');
+SETIDENTIFIER: ('s'|'S')('e'|'E')('t'|'T')('i'|'I')('d'|'D')('e'|'E')('n'|'N')('t'|'T')('i'|'I')('f'|'F')('i'|'I')('e'|'E')('r'|'R');
+SETNULLSET: ('s'|'S')('e'|'E')('t'|'T')('n'|'N')('u'|'U')('l'|'L')('l'|'L')('s'|'S')('e'|'E')('t'|'T');
+SETINTERPOLATIONDEFAULT: ('s'|'S')('e'|'E')('t'|'T')('i'|'I')('n'|'N')('t'|'T')('e'|'E')('r'|'R')('p'|'P')('o'|'O')('l'|'L')('a'|'A')('t'|'T')('i'|'I')('o'|'O')('n'|'N')('d'|'D')('e'|'E')('f'|'F')('a'|'A')('u'|'U')('l'|'L')('t'|'T');
+SETINTERPOLATIONSET:('s'|'S')('e'|'E')('t'|'T')('i'|'I')('n'|'N')('t'|'T')('e'|'E')('r'|'R')('p'|'P')('o'|'O')('l'|'L')('a'|'A')('t'|'T')('i'|'I')('o'|'O')('n'|'N')('s'|'S')('e'|'E')('t'|'T');
+SETCRSSET: ('s'|'S')('e'|'E')('t'|'T')('c'|'C')('r'|'R')('s'|'S')('s'|'S')('e'|'E')('t'|'T');
+TRIM: ('t'|'T')('r'|'R')('i'|'I')('m'|'M');
+SLICE: ('s'|'S')('l'|'L')('i'|'I')('c'|'C')('e'|'E');
+EXTEND: ('e'|'E')('x'|'X')('t'|'T')('e'|'E')('n'|'N')('d'|'D');
+SCALE: ('s'|'S')('c'|'C')('a'|'A')('l'|'L')('e'|'E');
+CRSTRANSFORM: ('c'|'C')('r'|'R')('s'|'S')('t'|'T')('r'|'R')('a'|'A')('n'|'N')('s'|'S')('f'|'F')('o'|'O')('r'|'R')('m'|'M');
+COUNT: ('c'|'C')('o'|'O')('u'|'U')('n'|'N')('t'|'T');
+ADD: ('a'|'A')('d'|'D')('d'|'D');
+AVG: ('a'|'A')('v'|'V')('g'|'G');
+MAX: ('m'|'M')('a'|'A')('x'|'X');
+MIN: ('m'|'M')('i'|'I')('n'|'N');
+SOME: ('s'|'S')('o'|'O')('m'|'M')('e'|'E');
+ALL: ('a'|'A')('l'|'L')('l'|'L');
+COVERAGE: ('c'|'C')('o'|'O')('v'|'V')('e'|'E')('r'|'R')('a'|'A')('g'|'G')('e'|'E');
+OVER: ('o'|'O')('v'|'V')('e'|'E')('r'|'R');
+VALUE: ('v'|'V')('a'|'A')('l'|'L')('u'|'U')('e'|'E');
+VALUES: ('v'|'V')('a'|'A')('l'|'L')('u'|'U')('e'|'E')('s'|'S');
+LIST: ('l'|'L')('i'|'I')('s'|'S')('t'|'T');
+CONDENSE: ('c'|'C')('o'|'O')('n'|'N')('d'|'D')('e'|'E')('n'|'N')('s'|'S')('e'|'E');
+USING: ('u'|'U')('s'|'S')('i'|'I')('n'|'N')('g'|'G');
+NEAREST: ('n'|'N')('e'|'E')('a'|'A')('r'|'R')('e'|'E')('s'|'S')('t'|'T');
+LINEAR: ('l'|'L')('i'|'I')('n'|'N')('e'|'E')('a'|'A')('r'|'R');
+QUADRATIC: ('q'|'Q')('u'|'U')('a'|'A')('d'|'D')('r'|'R')('a'|'A')('t'|'T')('i'|'I')('c'|'C');
+CUBIC: ('c'|'C')('u'|'U')('b'|'B')('i'|'I')('c'|'C');
+FULL: ('f'|'F')('u'|'U')('l'|'L')('l'|'L');
+NONE: ('n'|'N')('o'|'O')('n'|'N')('e'|'E');
+HALF: ('h'|'H')('a'|'A')('l'|'L')('f'|'F');
+OTHER: ('o'|'O')('t'|'T')('h'|'H')('e'|'E')('r'|'R');
+PHI: ('p'|'P')('h'|'H')('i'|'I');
+BIT: ('b'|'B')('i'|'I')('t'|'T');
+UNSIGNED: ('u'|'U')('n'|'N')('s'|'S')('i'|'I')('g'|'G')('n'|'N')('e'|'E')('d'|'D');
+BOOLEAN: ('b'|'B')('o'|'O')('o'|'O')('l'|'L')('e'|'E')('a'|'A')('n'|'N');
+CHAR: ('c'|'C')('h'|'H')('a'|'A')('r'|'R');
+SHORT: ('s'|'S')('h'|'H')('o'|'O')('r'|'R')('t'|'T');
+LONG: ('l'|'L')('o'|'O')('n'|'N')('g'|'G');
+FLOAT: ('f'|'F')('l'|'L')('o'|'O')('a'|'A')('t'|'T');
+DOUBLE: ('d'|'D')('o'|'O')('u'|'U')('b'|'B')('l'|'L')('e'|'E');
+COMPLEX: ('c'|'C')('o'|'O')('m'|'M')('p'|'P')('l'|'L')('e'|'E')('x'|'X');
+COMPLEX2: ('c'|'C')('o'|'O')('m'|'M')('p'|'P')('l'|'L')('e'|'E')('x'|'X')'2';
+BOOLEANCONSTANT: (('t'|'T')('r'|'R')('u'|'U')('e'|'E'))|(('f'|'F')('a'|'A')('l'|'L')('s'|'S')('e'|'E'));
+INTEGERCONSTANT:  (PLUS|MINUS)? ('0'..'9')+;
+FLOATCONSTANT: INTEGERCONSTANT ('.')('0'..'9'+)(('e'|'E')(('-'|'+')?)('0'..'9'+))?;
+STRING: '"' ( options {greedy=false;} : . )* '"' {setText(getText().substring(1, getText().length()-1));};
+NAME: ('a'..'z'|'A'..'Z'|'_')(('a'..'z'|'A'..'Z'|'0'..'9'|'_')*);
+VARIABLE_DOLLAR: '$'(('a'..'z'|'A'..'Z'|'0'..'9'|'_')*) {setText(getText().substring(1, getText().length())); } ;
+WHITESPACE: (' ' | '\t' | '\r' | '\n' | '\u000C')+ { skip(); } ;