[antlr-interest] grammar patterns/best practice?

[Oliver Kowalke]

Hello,
is a collection of patterns used in grammars avaialbe on the INet?
I mean patterns used in order to solve some kind of problems:

...
comparison_op
	:
	EQ | GE | GEQ | IEQ | LE | LEQ | NEQ
	;

factor_op
	:
	STAR | SOLIDUS
	;

term_op
	:
	PLUS | MINUS
	;
...
condition
	: boolean_term ( OR boolean_term )*
;

boolean_term
	: boolean_factor ( AND boolean_factor )*
	;

boolean_factor
	: ( NOT )? predicate
;

predicate
	:
	value comparison_op value
	;

value
	:
	term ( options{ greedy=true; } : term_op term )*
	;

term :
	factor ( options{ greedy=true; } : factor_op factor)*
	;

factor
	:
	( sign ) ? unsigned_value
	;
...

(used for logical and arithmetic operators).
best regards,
Oliver