Definition of lexer ConstraintLexer, which is a subclass of CharScanner.

/** Lexer nextToken rule:
 *  The lexer nextToken rule is synthesized from all of the user-defined
 *  lexer rules.  It logically consists of one big alternative block with
 *  each user-defined rule being an alternative.
 */
mWS 
|	mOR 
|	mAND 
|	mLT 
|	mLE 
|	mGT 
|	mGE 
|	mEQ 
|	mNE 
|	mDOT 
|	mLPAREN 
|	mRPAREN 
|	mPROPERTY 
|	mNUM_LITERAL 
|	mSTR_LITERAL 
mWS
	:	(	' ' 
		|	'\t' 
		) 
		
	;

mOR
	:	"||" 
	;

mAND
	:	"&&" 
	;

mLT
	:	"<" 
	;

mLE
	:	"<=" 
	;

mGT
	:	">" 
	;

mGE
	:	">=" 
	;

mEQ
	:	"==" 
	;

mNE
	:	"!=" 
	;

mDOT
	:	"." 
	;

mLPAREN
	:	'(' 
	;

mRPAREN
	:	')' 
	;

protected mID
	:	(				'a'..'z' 
		|				'A'..'Z' 
		|	'_' 
		) 
		(				'a'..'z' 
		|				'A'..'Z' 
		|	'_' 
		|				'0'..'9' 
		)* 
	;

mPROPERTY
	:	mID ( mDOT mID )* 
	;

mNUM_LITERAL
	:	( 			'0'..'9' )+ 
	|	'+' ( 			'0'..'9' )+ 
	|	'-' ( 			'0'..'9' )+ 
	;

mSTR_LITERAL
	:	'\'' ( ~'\'' )* '\'' 
	;