grammar.g

			test = bool_operator [tagset, vars] {
			op.reset(new Conditional<StrSet>(test, p_true));
		}
;

///////////////////////////////////////////////////////////////////////////////
// Boool operator 
// Returns boost::shared_ptr<Function<Bool> >
///////////////////////////////////////////////////////////////////////////////
bool_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
	: ret = bool_and        [tagset, vars]  
	| ret = bool_or         [tagset, vars]  
	| ret = bool_nor        [tagset, vars]  
	| ret = bool_var_val    [tagset, vars]	
	| ret = bool_regex      [tagset, vars]
	| ret = bool_inout      [tagset, vars]
	| ret = bool_condition  [tagset, vars]
	// setvar:
	| ret = setvar_operator [tagset, vars]
	// equal/in/inter:
	| ret = equal_operator  [tagset, vars]
	| ret = in_operator     [tagset, vars]
	| ret = inter_operator  [tagset, vars]
	// iterations
	| ret = bool_iteration  [tagset, vars]
	// agreement
	| ret = bool_agreement  [tagset, vars]
	//
	| ret = bool_phrase     [tagset, vars]
	// debug operators
	| ret = debug_print_operator [tagset, vars]
	//
	| LPAREN ret = bool_operator [tagset, vars] RPAREN
;

// ----------------------------------------------------------------------------
// comma-separated predicates (bool operators)
bool_operator_comma_sep
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns 
		[boost::shared_ptr<std::vector<boost::shared_ptr<Function<Bool> > > > ret_v]
{
	boost::shared_ptr<Function<Bool> > pred;
	ret_v.reset(
		new std::vector<boost::shared_ptr<Function<Bool> > >
	);
}
	: pred = bool_operator [tagset, vars] { 
		ret_v->push_back(pred);
	} 
	(
		COMMA pred = bool_operator [tagset, vars] {
			ret_v->push_back(pred);
		}
	)*
;

// ----------------------------------------------------------------------------
// And operator.
bool_and 
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<std::vector<boost::shared_ptr<Function<Bool> > > > ret_v;
}
	: "and" LPAREN ret_v = bool_operator_comma_sep [tagset, vars] RPAREN {
			op.reset(new And(ret_v));
	}
;

// ----------------------------------------------------------------------------
// Or operator
bool_or
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<std::vector<boost::shared_ptr<Function<Bool> > > > ret_v;
}
	: "or" LPAREN ret_v = bool_operator_comma_sep [tagset, vars] RPAREN {
			op.reset(new Or(ret_v));
	}
;

// ----------------------------------------------------------------------------
// Nor/Not operator
bool_nor
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<std::vector<boost::shared_ptr<Function<Bool> > > > ret_v;
}
	: "not" LPAREN ret_v = bool_operator_comma_sep [tagset, vars] RPAREN {
			op.reset(new Nor(ret_v));
	}
;

// ----------------------------------------------------------------------------
// Wrapper for bool value and bool variable
bool_var_val
	[const Corpus2::Tagset& /*tagset*/, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
	: op = bool_value 
	| op = bool_variable [vars]
;

// ----------------------------------------------------------------------------
// Regex operator
bool_regex
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<StrSet> > expr;
}
	: "regex" 
		LPAREN 
			expr = strset_operator [tagset, vars] COMMA reg: STRING 
		RPAREN {
			op.reset(new Regex(expr, token_ref_to_ustring(reg)));
		}
;

// ----------------------------------------------------------------------------
// Input/output operator
bool_inout
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<Position> > ret_pos;
}
	: "inside"  LPAREN ret_pos = position_operator [tagset, vars] RPAREN {
		op.reset(new IsInside(ret_pos));
	}
	| "outside" LPAREN ret_pos = position_operator [tagset, vars] RPAREN {
		op.reset(new IsOutside(ret_pos));
	}
;

// ----------------------------------------------------------------------------
// if (Bool, Bool, Bool)
// ? Bool ? Bool : False
bool_condition
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<Bool> > test, p_true, p_false;
}
	: "if" LPAREN test = bool_operator [tagset, vars] COMMA 
							p_true = bool_operator [tagset, vars] 
							(COMMA p_false = bool_operator [tagset, vars])? 
	RPAREN {
		if (p_false) {
			op.reset(new Conditional<Bool>(test, p_true, p_false));
		}
		else {
			op.reset(new Conditional<Bool>(test, p_true));
		}
	}
	| Q_MARK 
			p_true = bool_operator [tagset, vars]
		Q_MARK 
			test = bool_operator [tagset, vars] {
			op.reset(new Conditional<Bool>(test, p_true));
		}
;

// ----------------------------------------------------------------------------
// Equal operator
equal_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<TSet> > t1, t2;
	boost::shared_ptr<Function<Bool> > b1, b2;
	boost::shared_ptr<Function<StrSet>  > s1, s2;
	boost::shared_ptr<Function<Position> > p1, p2;
}
	: "equal" LPAREN
	(
		(position_operator [tagset, vars]) =>
		(
			p1 = position_operator [tagset, vars] COMMA 
			p2 = position_operator [tagset, vars] {
				op.reset(new Equals<Position>(p1, p2));
			}
		)
	|
		(symset_operator [tagset, vars]) =>
		(
			t1 = symset_operator [tagset, vars] COMMA  
			t2 = symset_operator [tagset, vars] {
				op.reset(new Equals<TSet>(t1, t2));
			}
		)
	|
		(strset_operator [tagset, vars]) =>
		(
			s1 = strset_operator [tagset, vars] COMMA  
			s2 = strset_operator [tagset, vars] {
				op.reset(new Equals<StrSet>(s1, s2));
			}
		)
	|
		(
			b1 = bool_operator [tagset, vars] COMMA
			b2 = bool_operator [tagset, vars] {
				op.reset(new Equals<Bool>(b1, b2));
			}
		)
	)
	RPAREN
;

// ----------------------------------------------------------------------------
// In operator
in_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<TSet> > t1, t2;
	boost::shared_ptr<Function<StrSet> > s1, s2;
}
:
	"in" LPAREN
	(
		(symset_operator [tagset, vars]) =>
		(
			t1 = symset_operator [tagset, vars] COMMA 
			t2 = symset_operator [tagset, vars] {
				op.reset(new IsSubsetOf<TSet>(t1, t2));
			}
		)
		|
		(
			s1 = strset_operator [tagset, vars] COMMA
			s2 = strset_operator [tagset, vars] {
				op.reset(new IsSubsetOf<StrSet>(s1, s2));
			}
		)
	)
	RPAREN
;
// ----------------------------------------------------------------------------
// Inter operator
inter_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<TSet> > t1, t2;
	boost::shared_ptr<Function<StrSet> > s1, s2;
}
	:
	"inter" LPAREN
	(
		(symset_operator [tagset, vars]) =>
		(
			t1 = symset_operator [tagset, vars] COMMA  
			t2 = symset_operator [tagset, vars]  {
				op.reset(new Intersects<TSet>(t1, t2));
			}
		)
	|
		(
			s1 = strset_operator [tagset, vars] COMMA  
			s2 = strset_operator [tagset, vars]  {
				op.reset(new Intersects<StrSet>(s1, s2));
			}
		)
	)
	RPAREN
;

// ----------------------------------------------------------------------------
// Debug printing:
debug_print_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
{
	boost::shared_ptr<FunctionBase> v;
}
	: "debug" LPAREN
	(
		(position_operator [tagset, vars]) =>
		(
			v = position_operator [tagset, vars] {
				ret.reset(new DebugPrint(v));
			}
		)
	|
		(symset_operator [tagset, vars]) =>
		(
			v = symset_operator [tagset, vars] {
				ret.reset(new DebugPrint(v));
			}
		)
	|
		(strset_operator [tagset, vars]) =>
		(
			v = strset_operator [tagset, vars] {
				ret.reset(new DebugPrint(v));
			}
		)
	|
		(
			v = bool_operator [tagset, vars] {
				ret.reset(new DebugPrint(v));
			}
		)
	)
	RPAREN
;

// ----------------------------------------------------------------------------
// Iterations:
bool_iteration
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
{
	int min_match = 0;
	boost::shared_ptr<Function<Bool> > expr;
	boost::shared_ptr<Function<Position> > lpos, rpos;
	boost::shared_ptr<VariableAccessor<Position> > pacc;
}
	: "only" LPAREN 
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA
			pacc = position_variable_acc [vars]     COMMA
			expr = bool_operator     [tagset, vars]
		RPAREN {
			ret.reset(new Only(lpos, rpos, *pacc, expr));
		}

	| "atleast" LPAREN
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA
			pacc = position_variable_acc [vars]     COMMA
			expr = bool_operator     [tagset, vars] COMMA
			min_match = number
		RPAREN {
			ret.reset(new AtLeast(lpos, rpos, *pacc, expr, min_match));
		}
	| "llook" LPAREN //note inverted rpos/lpos order
			rpos = position_operator [tagset, vars] COMMA 
			lpos = position_operator [tagset, vars] COMMA
			pacc = position_variable_acc [vars]     COMMA
			expr = bool_operator     [tagset, vars] 
		RPAREN {
			ret.reset(new LeftLook(lpos, rpos, *pacc, expr));
		}
	| "rlook" LPAREN
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA
			pacc = position_variable_acc [vars]     COMMA
			expr = bool_operator     [tagset, vars] 
		RPAREN {
			ret.reset(new RightLook(lpos, rpos, *pacc, expr));
		}
;

// ----------------------------------------------------------------------------
// Agreement operator: agr, agrpp, wagr
bool_agreement
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
{
	boost::shared_ptr<Function<TSet> > expr;
	boost::shared_ptr<Function<Position> > lpos, rpos;
}
	: "agr"   LPAREN 
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA 
			expr = symset_operator [tagset, vars]
		RPAREN {
			ret.reset(new StrongAgreement(lpos, rpos, expr, tagset));
		}
	| "agrpp" LPAREN
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA 
			expr = symset_operator [tagset, vars]
		RPAREN {
			ret.reset(new PointAgreement(lpos, rpos, expr, tagset));
		}
	| "wagr"  LPAREN
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA 
			expr = symset_operator [tagset, vars]
		RPAREN {
			ret.reset(new WeakAgreement(lpos, rpos, expr, tagset));
		}
;

// ----------------------------------------------------------------------------
// Parse operator on L1 level
bool_phrase
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
	: ret = bool_phrase_annotation [tagset, vars]
	| ret = bool_phrase_iteration  [tagset, vars]
;

// ----------------------------------------------------------------------------
// Annotation operator: phrase, phrase_beg, phrase_end, phrase_whole, phrase_pp
bool_phrase_annotation
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
{
	boost::shared_ptr<Function<Position> > lpos, rpos;
}
	: "phrase" LPAREN 
			lpos = position_operator [tagset, vars] COMMA n1: STRING 
		RPAREN {
			// TODO
		}
	| "phrase_beg" LPAREN 
			lpos = position_operator [tagset, vars] COMMA n2: STRING 
		RPAREN {
			// TODO
		}
	| "phrase_end" LPAREN 
			lpos = position_operator [tagset, vars] COMMA n3: STRING 
		RPAREN {
			// TODO
		}
	| "phrase_whole" LPAREN 
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA n4: STRING 
		RPAREN {
			// TODO
		}
	| "phrase_pp" LPAREN 
			lpos = position_operator [tagset, vars] COMMA 
			rpos = position_operator [tagset, vars] COMMA n5: STRING 
		RPAREN {
			// TODO
		}
;

// ----------------------------------------------------------------------------
// Phrase iteration operator: lphrase, rphrase
bool_phrase_iteration
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
{
	boost::shared_ptr<Function<Position> > position;
	boost::shared_ptr<VarGetter<Position> > var_position;
}
	: "lphrase" LPAREN
			position     = position_operator [tagset, vars] COMMA
			var_position = position_variable [vars]         COMMA
			n1: STRING
		RPAREN {
			// TODO
		}
	| "rphrase" LPAREN 
			position     = position_operator [tagset, vars] COMMA
			var_position = position_variable [vars]         COMMA
			n2: STRING
		RPAREN {
			// TODO
		}
;


// ----------------------------------------------------------------------------
// Setvar operator
// Returns boost::shared_ptr<Function<Bool> >
// ----------------------------------------------------------------------------
setvar_operator 
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > ret]
	: "setvar" LPAREN
	  (
		  ret = position_setvar [tagset, vars]
		| ret = bool_setvar     [tagset, vars]
		| ret = strset_setvar   [tagset, vars]
		| ret = symset_setvar   [tagset, vars]
	  )
	  RPAREN
;

// ----------------------------------------------------------------------------
// Setvar for position
position_setvar 
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<Position> > ret_op;
	boost::shared_ptr<VariableAccessor<Position> > ret_acc;
}
	:	ret_acc = position_variable_acc [vars]
		COMMA
		ret_op  = position_operator [tagset, vars] {
			op.reset(new VarSetter<Position>(*ret_acc, ret_op));
		}
;

// ----------------------------------------------------------------------------
// Setvar for bool
bool_setvar 
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<Bool> > ret_op;
	boost::shared_ptr<VariableAccessor<Bool> > ret_acc;
}
	:	ret_acc = bool_variable_acc [vars]
		COMMA
		ret_op  = bool_operator [tagset, vars] {
			op.reset(new VarSetter<Bool>(*ret_acc, ret_op));
		}
;

// ----------------------------------------------------------------------------
// Setvar for strset
strset_setvar
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<StrSet> > ret_op;
	boost::shared_ptr<VariableAccessor<StrSet> > ret_acc;
}
	: ret_acc = strset_variable_acc [vars]
	  COMMA 
		ret_op  = strset_operator [tagset, vars] {
			op.reset(new VarSetter<StrSet>(*ret_acc, ret_op));
		}
;

// ----------------------------------------------------------------------------
// Setvar for symset
symset_setvar 
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Function<Bool> > op]
{
	boost::shared_ptr<Function<TSet> > ret_op;
	boost::shared_ptr<VariableAccessor<TSet> > ret_acc;
}
	: ret_acc = symset_variable_acc [vars]
	  COMMA 
	  ret_op  = symset_operator [tagset, vars] {
			op.reset(new VarSetter<TSet>(*ret_acc, ret_op));
		}
;

// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Tagging actions and rules:
// ----------------------------------------------------------------------------

// ----------------------------------------------------------------------------
// Single action such as select, delete, relabel or unify
action
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<TagAction> act]
	: act = action_select  [tagset, vars]
	| act = action_delete  [tagset, vars]
	| act = action_relabel [tagset, vars]
	//
	| act = action_unify [tagset, vars]
	//
	| act = action_mark [tagset, vars]
	| act = action_unmark [tagset, vars]
;

// Action sequence - the actions are separated with commas:
// 	select(...), select(...), delete(...)
action_sequence
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<std::vector<boost::shared_ptr<TagAction> > > v_act]
{
	boost::shared_ptr<TagAction> act;
	v_act.reset(new std::vector<boost::shared_ptr<TagAction> >);
}
	: act = action[tagset, vars] {
		v_act->push_back(act);
	} 
	(
		COMMA act = action[tagset, vars] {
			v_act->push_back(act);
		}
	)*
;

// ----------------------------------------------------------------------------
// Single rule:
// 	rule(NAME, ACTIONS) or rule(NAME, COND, ACTIONS)
rule
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<TagRule> rle]
{
	boost::shared_ptr<Function<Bool> > condition;
	boost::shared_ptr<std::vector<boost::shared_ptr<TagAction> > > actions;
}
	: "rule" LPAREN name: STRING COMMA 
				(condition = bool_operator [tagset, vars] COMMA)?
				actions = action_sequence [tagset, vars] 
		RPAREN {
			if (condition) {
				rle.reset(
					new TagRule(token_ref_to_std_string(name), vars, actions, condition));
			}
			else {
				rle.reset(
					new TagRule(token_ref_to_std_string(name), vars, actions));
			}
		}
/*
	: "rule" LPAREN name: STRING COMMA
	(
		(bool_operator[tagset, vars]) =>
		(
			condition = bool_operator [tagset, vars] COMMA
			actions = action_sequence [tagset, vars] {
				// rule(NAME, COND, ACTIONS)
				rle.reset(
					new TagRule(token_ref_to_std_string(name), vars, actions, condition));
			}
		)
	|
		(
			actions = action_sequence [tagset, vars] {
				// rule(NAME, ACTIONS)
				rle.reset(new TagRule(token_ref_to_std_string(name), vars, actions));
			}
		)
	)
	RPAREN
*/
;

// Rule sequence
rule_sequence
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<RuleSequence> rule_seq]
{
	// FIXME czy tutaj przypadkiem nie powinno byc shared_ptr?
	boost::shared_ptr<TagRule> rle;

	rule_seq.reset(new RuleSequence());
}
	: rle = rule [tagset, vars] {
		rule_seq->push_back(*rle);
	}
	(
		COMMA rle = rule [tagset, vars] {
			rule_seq->push_back(*rle);
		}
	)*
;

// Temporary name. 
// This is wrapper for rule_sequence in rules section in the wccl file
rules
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<RuleSequence> rule_seq]
	: "rules" LPAREN rule_seq = rule_sequence [tagset, vars] RPAREN {
		//
	}
;

// ----------------------------------------------------------------------------
// Select action: 
//	select(position, predicate) or select(predicate);
action_select 
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Select> action]
{
	boost::shared_ptr<Function<Position> > pos;
	boost::shared_ptr<Function<Bool> > condition;
}
	: "select" LPAREN
	(
		(position_operator [tagset, vars]) =>
		(
			pos = position_operator [tagset, vars] COMMA
			condition = bool_operator [tagset, vars] {
				// select(positon, condition); 
				action.reset(new Select(condition, pos));
			}
		)
	|
		(
			condition = bool_operator [tagset, vars] {
				// select(condition); 
				action.reset(new Select(condition));
			}
		)
	) 
	RPAREN
;

// ----------------------------------------------------------------------------
// Delete action
//	delete(position, predicate) or delete(predicate);
action_delete
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Delete> action]
{
	boost::shared_ptr<Function<Position> > pos;
	boost::shared_ptr<Function<Bool> > condition;
}
	: "delete" LPAREN
	(
		(position_operator [tagset, vars]) =>
		(
			pos = position_operator [tagset, vars] COMMA
			condition = bool_operator [tagset, vars] {
				// delete(positon, condition); 
				action.reset(new Delete(condition, pos));
			}
		)
	|
		(
			condition = bool_operator [tagset, vars] {
				// delete(condition); 
				action.reset(new Delete(condition));
			}
		)
	) 
	RPAREN
;

// ----------------------------------------------------------------------------
// Relabel action
// 	relabel(pos, symset, predicate) or relabel(symset, predicate)
action_relabel
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Relabel> action]
{
	boost::shared_ptr<Function<Position> > pos;
	boost::shared_ptr<Function<Bool> > condition;
	boost::shared_ptr<Function<TSet> > replace_with;
}
	: "relabel" LPAREN
	(
		(position_operator [tagset, vars]) =>
		(
			pos = position_operator [tagset, vars] COMMA
			replace_with = symset_operator [tagset, vars] COMMA
			condition = bool_operator [tagset, vars] {
				// relabel(pos, symset, predicate)
				action.reset(new Relabel(replace_with, condition, pos));
			}
		)
	|
		(
			replace_with = symset_operator [tagset, vars] COMMA
			condition = bool_operator [tagset, vars] {
				// relabel(symset, predicate)
				action.reset(new Relabel(replace_with, condition));
			}
		)
	)
	RPAREN
;

// ----------------------------------------------------------------------------
// Unify action 
action_unify
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Unify> action]
{
	boost::shared_ptr<Function<TSet> > attribs_expr;
	boost::shared_ptr<Function<Position> > pos_begin, pos_end;
}
	: "unify" LPAREN
			pos_begin    = position_operator [tagset, vars] COMMA
			pos_end      = position_operator [tagset, vars] COMMA
			attribs_expr = symset_operator   [tagset, vars]
		RPAREN  {
			action.reset(new Unify(pos_begin, pos_end, attribs_expr));
		}
;

// ----------------------------------------------------------------------------
// Mark action
action_mark
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Mark> action]
{
	boost::shared_ptr<Function<Position> > pos_begin, pos_end, pos_head;
}
	: "mark" LPAREN
			pos_begin    = position_operator [tagset, vars] COMMA
			pos_end      = position_operator [tagset, vars] COMMA
			(pos_head    = position_operator [tagset, vars] COMMA)?
			chan_name: STRING
		RPAREN  {
			action.reset(new Mark(pos_begin, pos_end, pos_head, ((antlr::Token*)chan_name)->getText()));
		}
;

// ----------------------------------------------------------------------------
// Unmark action
action_unmark
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<Unmark> action]
{
	boost::shared_ptr<Function<Position> > pos;
}
	: "unmark" LPAREN
			pos = position_operator [tagset, vars] COMMA
			chan_name: STRING
		RPAREN  {
			action.reset(new Unmark(pos, ((antlr::Token*)chan_name)->getText()));
		}
;

// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Match rules
// Returns boost::shared_ptr<MatchRule>
match_rule_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<MatchRule> ret_op]
{
	boost::shared_ptr<ApplyOperator> apply;
}
	: apply = match_apply_operator [tagset, vars] {
		ret_op = boost::make_shared<MatchRule>(vars, apply);
	}
;

// Match apply operator:
// 	apply(match(), cond(conditions), actions(actions)) 
// 	apply(match(), actions(actions))
// Returns boost::shared_ptr<ApplyOperator>
match_apply_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<ApplyOperator> ret_op]
{
	VariableAccessor<Match> matches = vars.create_accessor<Match>("_M");;
	boost::shared_ptr<const MatchOperator> match_op;
	boost::shared_ptr<std::vector<boost::shared_ptr<MatchAction> > > actions;
	boost::shared_ptr<std::vector<boost::shared_ptr<Function<Bool> > > > conditions;

}
	: "apply" LPAREN 
		match_op = match_operator[tagset, vars] COMMA
		("cond"   LPAREN conditions = bool_operator_comma_sep [tagset, vars] RPAREN COMMA)?
		"actions" LPAREN actions    =  match_action_comma_sep [tagset, vars] RPAREN
		RPAREN {
			if (conditions) {
				ret_op.reset(
					new ApplyOperator(matches, match_op, actions, conditions)
				);
			}
			else {
				ret_op.reset(
					new ApplyOperator(matches, match_op, actions)
				);
			}
		}
;

// Match operator: match(match_conditions)
// Returns boost::shared_ptr<MatchOperator>
match_operator
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<MatchOperator> op]
{
	boost::shared_ptr<ConjConditions> match_cond;
}
	: "match" LPAREN match_cond = match_condition [tagset,vars] RPAREN {
		op.reset(new MatchOperator(match_cond));
	}
;

// Match conditions. Wrapper for vector of the match conditions
match_condition
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<ConjConditions> condition]
{
	std::vector<boost::shared_ptr<const MatchCondition> > m_cond;
}
	: m_cond = match_condition_in [tagset, vars] {
		condition.reset(new ConjConditions(m_cond));
	}
;

// Match conditions.
// Retutns std::vector< boost::shared_ptr<const MatchCondition> >
match_condition_in
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [std::vector< boost::shared_ptr<const MatchCondition> > ret]
{
	boost::shared_ptr<const MatchCondition> r_cond;
}
	: r_cond = match_cond_all[tagset, vars] {
		ret.push_back(r_cond);
	}
	(
		COMMA
		r_cond = match_cond_all[tagset, vars] {
			ret.push_back(r_cond);
		}
	)*
;

// One of the match condition
// Returns boost::shared_ptr<const MatchCondition>
match_cond_all
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<const MatchCondition> ret]
	: ret = match_cond_optional [tagset, vars]
	| ret = match_cond_repeate  [tagset, vars]
	| ret = match_cond_token    [tagset, vars]
;

// Match condition - token (wraps a L0 predicate)
// Returns boost::shared_ptr<const MatchCondition>
match_cond_token
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<const TokenCondition> ret]
{
	boost::shared_ptr<Function<Bool> > bool_op;
}
	: bool_op = bool_operator [tagset, vars] {
		ret = boost::make_shared<TokenCondition>(bool_op);
	}
;


 // Match condition - optional
// Returns boost::shared_ptr<OptionalMatch>
match_cond_optional
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<OptionalMatch> mtch]
{
	boost::shared_ptr<ConjConditions> m_cond;
}
	: "optional" LPAREN m_cond = match_condition [tagset, vars] RPAREN {
		mtch.reset(new OptionalMatch(m_cond));
	}
;

// Match condition - repeat
// Returns boost::shared_ptr<RepeatedMatch>
match_cond_repeate
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<RepeatedMatch> mtch]
{
	boost::shared_ptr<ConjConditions> m_cond;
}
	: "repeat" LPAREN m_cond = match_condition [tagset, vars] RPAREN {
		mtch.reset(new RepeatedMatch(m_cond));
	}
;

// ----------------------------------------------------------------------------

// Match actions. Match action can be mark or unmark
// Returns boost::shared_ptr<MatchAction>
match_action
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<MatchAction> m_act]
	: m_act = match_mark_action   [tagset, vars]
	| m_act = match_unmark_action [tagset, vars]
;

// Match mark action
// Returns 
match_mark_action
	[const Corpus2::Tagset& tagset, Variables& vars]
	returns [boost::shared_ptr<MarkMatch> m_act]
{
	boost::shared_ptr<Function<Match> > match_to;
	boost::shared_ptr<Function<Match> > match_from;
	boost::shared_ptr<Function<Match> > head_match;
}
	: "mark" LPAREN 
			match_from = match_fit[tagset, vars] COMMA
			( match_to  = match_fit[tagset, vars] COMMA
				( head_match = match_fit[tagset, vars] COMMA )?
			)?
			annotation_name : STRING
		RPAREN {
			if (!match_to) {
				m_act.reset(
					new MarkMatch(
						match_from,
						((antlr::Token*)annotation_name)->getText()));
			} else {
				if (!head_match) {
					m_act.reset(
						new MarkMatch(
							match_from,
							match_to,
							((antlr::Token*)annotation_name)->getText()));
				} else {
					m_act.reset(
						new MarkMatch(
							match_from,
							match_to,
							head_match,
							((antlr::Token*)annotation_name)->getText()));
				}
			}
		}