grammar.g

		op.reset(new IsEmpty<StrSet>(arg));
	}
;

///////////////////////////////////////////////////////////////////////////////
// Match functional operators,
// which return boost::shared_ptr<Function<Match> >
///////////////////////////////////////////////////////////////////////////////

// ----------------------------------------------------------------------------
// A wrapper for match variable and match value.
match_var_val [ParsingScope& scope]
	returns [boost::shared_ptr<Function<Match> > ret]
	: ret = match_vector_variable [scope.variables()]
	| ret = match_value_const
;

///////////////////////////////////////////////////////////////////////////////
// Match operators.
// Returns boost::shared_ptr<Function<Match> >
///////////////////////////////////////////////////////////////////////////////
match_operator
  [ParsingScope& scope]
	returns [boost::shared_ptr<Function<Match> > ret]
{
	//
}
	:
	( ret = match_var_val [scope]
	| {LA(1)==LITERAL_M || LA(1)==COLON}? ("M")? {
			ret.reset(new VarGetter<Match>(scope.variables().create_accessor<Match>("_M")));
			ret.reset(new Submatch(ret, 1));
		}
	| "MA" { 
			ret.reset(new VarGetter<Match>(scope.variables().create_accessor<Match>("_M")));
			ret.reset(new Submatch(ret, 2));
		}
	| LPAREN ret = match_operator [scope] RPAREN
	)
	( // if there's a colon after the match, we have a submatch reference
		COLON i: UNSIGNED_INT { ret.reset(new Submatch(ret, token_ref_to_int(i))); }
	)*
;

// ----------------------------------------------------------------------------
// Wrapper from Function<Match> to Operator<Match>
functional_operator_match
	[ParsingScope& scope]
	returns [boost::shared_ptr<Operator<Match> > op]
{
	boost::shared_ptr<Function<Match> > body;
}
	: body = match_operator [scope] {
		op.reset(new Operator<Match>(body, scope.variables()));
	}
;

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
// WCCL FILE PARSING RULES
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

imports_section [WcclFile& wccl_file]
	: (import [wccl_file])+
;

import [WcclFile& wccl_file]
	: "import" LPAREN file_path : STRING COMMA lexicon_name : STRING RPAREN {
		wccl_file.import_lexicon(
			LexiconParser::parse_lexicon(
				wccl_file.path(),
				token_ref_to_std_string(lexicon_name),
				token_ref_to_std_string(file_path)));
	}
;

wccl_file_section [WcclFile& wccl_file]
	: any_operator_section [wccl_file]
	| tag_rules_section [wccl_file]
	| match_rules_section [wccl_file]
;

tag_rules_section [WcclFile& wccl_file]
{
	boost::shared_ptr<TagRuleSequence> rule_seq;
}
	: rule_seq = parse_tag_rule_sequence [wccl_file.tagset()] {
		if (wccl_file.has_tag_rules()) {
			throw ParserException("Only one tag_rules section allowed in a WCCL file.");
		}
		wccl_file.set_tag_rules(rule_seq);
	}
;

match_rules_section [WcclFile& wccl_file]
{
	ParsingScope scope(wccl_file);
	boost::shared_ptr<Matching::MatchRule> match_rule;
	boost::shared_ptr<Matching::MatchRuleSequence> rule_seq = boost::make_shared<Matching::MatchRuleSequence>();
}
	: "match_rules" {
		if (wccl_file.has_match_rules()) {
			throw ParserException("Only one match_rules section allowed in a WCCL file.");
		}
	}
	LPAREN
		match_rule = match_rule_operator [scope] {
			rule_seq->push_back(*match_rule);
			scope.reset_variables();
		}
		(
			SEMI match_rule = match_rule_operator [scope] {
				rule_seq->push_back(*match_rule);
				scope.reset_variables();
			}
		)* 
	RPAREN { wccl_file.set_match_rules(rule_seq); }
;

any_operator_section
	[WcclFile& wccl_file]
{
	boost::shared_ptr<UntypedOpSequence> untyped_seq;
	boost::shared_ptr<OpSequence<Bool> > bool_seq;
	boost::shared_ptr<OpSequence<TSet> > symset_seq;
	boost::shared_ptr<OpSequence<StrSet> > strset_seq;
	boost::shared_ptr<OpSequence<Position> > pos_seq;
	boost::shared_ptr<OpSequence<Match> > m_seq;
}
	: untyped_seq = untyped_operator_sequence [wccl_file] {
			wccl_file.add_untyped_section(untyped_seq);
		}
	| bool_seq = bool_operator_sequence [wccl_file] {
			wccl_file.add_section(bool_seq);
		}
	| symset_seq = symset_operator_sequence [wccl_file] {
			wccl_file.add_section(symset_seq);
		}
	| strset_seq = strset_operator_sequence [wccl_file] {
			wccl_file.add_section(strset_seq);
		}
	| pos_seq = position_operator_sequence [wccl_file] {
			wccl_file.add_section(pos_seq);
		}
	| m_seq = match_operator_sequence [wccl_file] {
			wccl_file.add_section(m_seq);
		}
;

bool_operator_sequence
	[const WcclFile& wccl_file]
	returns [boost::shared_ptr<OpSequence<Bool> > seq]
{
	ParsingScope scope(wccl_file);
	boost::shared_ptr<Operator<Bool> > op;
}
	: BOOL_SECTION_PREFIX name: STRING {
			seq.reset(new OpSequence<Bool>(token_ref_to_std_string(name)));
		}
		LPAREN
			op = functional_operator_bool [scope] { seq->append(op); scope.reset_variables(); }
			(SEMI op = functional_operator_bool [scope] { seq->append(op); scope.reset_variables(); })*
		RPAREN
;

symset_operator_sequence
	[const WcclFile& wccl_file]
	returns [boost::shared_ptr<OpSequence<TSet> > seq]
{
	ParsingScope scope(wccl_file);
	boost::shared_ptr<Operator<TSet> > op;
}
	: TST_SECTION_PREFIX name: STRING {
			seq.reset(new OpSequence<TSet>(token_ref_to_std_string(name)));
		}
		LPAREN
			op = functional_operator_symset [scope] { seq->append(op); scope.reset_variables(); }
			(SEMI op = functional_operator_symset [scope] { seq->append(op); scope.reset_variables(); })*
		RPAREN
;

strset_operator_sequence
	[const WcclFile& wccl_file]
	returns [boost::shared_ptr<OpSequence<StrSet> > seq]
{
	ParsingScope scope(wccl_file);
	boost::shared_ptr<Operator<StrSet> > op;
}
	: STR_SECTION_PREFIX name: STRING {
			seq.reset(new OpSequence<StrSet>(token_ref_to_std_string(name)));
		}
		LPAREN
			op = functional_operator_strset [scope] { seq->append(op); scope.reset_variables(); }
			(SEMI op = functional_operator_strset [scope] { seq->append(op); scope.reset_variables(); })*
		RPAREN
;

position_operator_sequence
	[const WcclFile& wccl_file]
	returns [boost::shared_ptr<OpSequence<Position> > seq]
{
	ParsingScope scope(wccl_file);
	boost::shared_ptr<Operator<Position> > op;
}
	: POS_SECTION_PREFIX name: STRING {
			seq.reset(new OpSequence<Position>(token_ref_to_std_string(name)));
		}
		LPAREN
			op = functional_operator_position [scope] { seq->append(op); scope.reset_variables(); }
			(SEMI op = functional_operator_position [scope] { seq->append(op); scope.reset_variables(); })*
		RPAREN
;

untyped_operator_sequence
	[const WcclFile& wccl_file]
	returns [boost::shared_ptr<UntypedOpSequence> seq]
{
	ParsingScope scope(wccl_file);
	boost::shared_ptr<FunctionalOperator> op;
}
	: AT_MARK name: STRING { 
			seq.reset(new UntypedOpSequence(token_ref_to_std_string(name)));
		}
		LPAREN
			op = functional_operator_any [scope] { seq->append(op); scope.reset_variables(); }
			(SEMI op = functional_operator_any [scope] { seq->append(op); scope.reset_variables(); })*
		RPAREN
;

match_operator_sequence
	[const WcclFile& wccl_file]
	returns [boost::shared_ptr<OpSequence<Match> > seq]
{
	ParsingScope scope(wccl_file);
	boost::shared_ptr<Operator<Match> > op;
}
	: MATCH_SECTION_PREFIX name: STRING {
			seq.reset(new OpSequence<Match>(token_ref_to_std_string(name)));
		}
		LPAREN
			op = functional_operator_match [scope] { seq->append(op); scope.reset_variables(); }
			(SEMI op = functional_operator_match [scope] { seq->append(op); scope.reset_variables();  })*
		RPAREN
;

functional_operator_any 
	[ParsingScope& scope]
	returns [boost::shared_ptr<FunctionalOperator> op]
{
}
	: (position_operator [scope]) => op = functional_operator_position [scope]
	| (symset_operator [scope]) => op = functional_operator_symset [scope]
	| (strset_operator [scope]) => op = functional_operator_strset [scope]
	| (match_operator [scope]) => op = functional_operator_match [scope]
	| op = functional_operator_bool [scope]
;

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

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

// Action sequence - the actions are separated with commas:
// 	select(...), select(...), delete(...)
action_sequence
	[ParsingScope& scope]
	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[scope] {
		v_act->push_back(act);
	} 
	(
		COMMA act = action[scope] {
			v_act->push_back(act);
		}
	)*
;

// ----------------------------------------------------------------------------
// Single rule:
// 	rule(NAME, ACTIONS) or rule(NAME, COND, ACTIONS)
tag_rule
	[ParsingScope& scope]
	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 [scope] COMMA)?
				actions = action_sequence [scope] 
		RPAREN {
			if (condition) {
				rle.reset(
					new TagRule(token_ref_to_std_string(name), scope.variables(), actions, condition));
			}
			else {
				rle.reset(
					new TagRule(token_ref_to_std_string(name), scope.variables(), actions));
			}
		}
;

// Rule sequence
tag_rule_sequence
	[ParsingScope& scope]
	returns [boost::shared_ptr<TagRuleSequence> rule_seq]
{
	boost::shared_ptr<TagRule> rle;
	rule_seq.reset(new TagRuleSequence());
}
	: rle = tag_rule [scope] {
		rule_seq->push_back(*rle);
		scope.reset_variables();
	}
	(
		SEMI rle = tag_rule [scope] {
			rule_seq->push_back(*rle);
			scope.reset_variables();
		}
	)*
;

// ----------------------------------------------------------------------------
// This is wrapper for tag_rule_sequence in rules section in the wccl file
tag_rules
	[ParsingScope& scope]
	returns [boost::shared_ptr<TagRuleSequence> rule_seq]
	: "tag_rules" LPAREN rule_seq = tag_rule_sequence [scope] RPAREN {
		//
	}
;

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

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

// ----------------------------------------------------------------------------
// Relabel action
// 	relabel(pos, symset, predicate) or relabel(symset, predicate)
action_relabel
	[ParsingScope& scope]
	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 [scope]) =>
		(
			pos = position_operator [scope] COMMA
			replace_with = symset_operator [scope] COMMA
			condition = bool_operator [scope] {
				// relabel(pos, symset, predicate)
				action.reset(new Relabel(replace_with, condition, pos));
			}
		)
	|
		(
			replace_with = symset_operator [scope] COMMA
			condition = bool_operator [scope] {
				// relabel(symset, predicate)
				action.reset(new Relabel(replace_with, condition));
			}
		)
	)
	RPAREN
;

// ----------------------------------------------------------------------------
// Unify action 
action_unify
	[ParsingScope& scope]
	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 [scope] COMMA
			pos_end      = position_operator [scope] COMMA
			attribs_expr = symset_operator   [scope]
		RPAREN  {
			action.reset(new Unify(pos_begin, pos_end, attribs_expr));
		}
;

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

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

// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Match rules
// Returns boost::shared_ptr<Matching::MatchRule>
match_rule_operator
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::MatchRule> ret_op]
{
	boost::shared_ptr<Matching::ApplyOperator> apply;
	scope.variables().get_put<Match>("_M");
}
	: apply = match_apply_operator [scope] {
		ret_op = boost::make_shared<Matching::MatchRule>(scope.variables(), apply);
	}
;

// Match apply operator:
// 	apply(match(), cond(conditions), actions(actions)) 
// 	apply(match(), actions(actions))
// Returns boost::shared_ptr<Matching::ApplyOperator>
match_apply_operator
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::ApplyOperator> ret_op]
{
	VariableAccessor<Match> matches = scope.variables().create_accessor<Match>("_M");;
	boost::shared_ptr<Matching::ConjConditions> match_cond;
	boost::shared_ptr<std::vector<boost::shared_ptr<Matching::MatchAction> > > actions;
	boost::shared_ptr<std::vector<boost::shared_ptr<Function<Bool> > > > conditions;
}
	: "apply" LPAREN 
		"match" LPAREN match_cond = match_condition [scope] RPAREN COMMA
		("cond"   LPAREN conditions = bool_operator_comma_sep [scope] RPAREN COMMA)?
		"actions" LPAREN actions    =  match_action_comma_sep [scope] RPAREN
		RPAREN {
			if (conditions) {
				ret_op.reset(
					new Matching::ApplyOperator(matches, match_cond, actions, conditions)
				);
			}
			else {
				ret_op.reset(
					new Matching::ApplyOperator(matches, match_cond, actions)
				);
			}
		}
;

// Match conditions. Wrapper for vector of the match conditions
match_condition
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::ConjConditions> condition]
{
	std::vector<boost::shared_ptr<const Matching::MatchCondition> > m_cond;
}
	: m_cond = match_condition_in [scope] {
		condition.reset(new Matching::ConjConditions(m_cond));
	}
;

// Match conditions.
// Retutns std::vector< boost::shared_ptr<const Matching::MatchCondition> >
match_condition_in
	[ParsingScope& scope]
	returns [std::vector< boost::shared_ptr<const Matching::MatchCondition> > ret]
{
	boost::shared_ptr<const Matching::MatchCondition> r_cond;
}
	: r_cond = match_cond_all[scope] {
		ret.push_back(r_cond);
	}
	(
		COMMA
		r_cond = match_cond_all[scope] {
			ret.push_back(r_cond);
		}
	)*
;

// Match variants variant(v1), variant(v2), ...
// Retutns boost::shared_ptr<std::vector<Matching::ConjConditions> >
match_variants
	[ParsingScope& scope]
	returns [boost::shared_ptr<std::vector<boost::shared_ptr<Matching::ConjConditions> > > variants]
{
	variants.reset(new std::vector<boost::shared_ptr<Matching::ConjConditions> >());

	boost::shared_ptr<Matching::ConjConditions> variant;
}
	: "variant" LPAREN variant = match_condition [scope] RPAREN {
		variants->push_back(variant);
	} 
	(
		COMMA "variant" LPAREN variant = match_condition [scope] RPAREN {
			variants->push_back(variant);
		}
	)*
;

// One of the match condition
// Returns boost::shared_ptr<const Matching::MatchCondition>
match_cond_all
	[ParsingScope& scope]
	returns [boost::shared_ptr<const Matching::MatchCondition> ret]
	: ret = match_cond_optional [scope]
	| ret = match_cond_repeate  [scope]
	| ret = match_cond_token    [scope]
	| ret = match_cond_oneof    [scope]
	| ret = match_cond_longest  [scope]
	| ret = match_cond_is
	| ret = match_cond_text
;

// Match condition - token (wraps a L0 predicate)
// Returns boost::shared_ptr<const Matching::MatchCondition>
match_cond_token
	[ParsingScope& scope]
	returns [boost::shared_ptr<const Matching::TokenCondition> ret]
{
	boost::shared_ptr<Function<Bool> > bool_op;
}
	: bool_op = bool_operator [scope] {
		ret = boost::make_shared<Matching::TokenCondition>(bool_op);
	}
;


 // Match condition - optional
// Returns boost::shared_ptr<Matching::OptionalMatch>
match_cond_optional
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::OptionalMatch> mtch]
{
	boost::shared_ptr<Matching::ConjConditions> m_cond;
}
	: "optional" LPAREN m_cond = match_condition [scope] RPAREN {
		mtch.reset(new Matching::OptionalMatch(m_cond));
	}
;

// Match condition - repeat
// Returns boost::shared_ptr<Matching::RepeatedMatch>
match_cond_repeate
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::RepeatedMatch> mtch]
{
	boost::shared_ptr<Matching::ConjConditions> m_cond;
}
	: "repeat" LPAREN m_cond = match_condition [scope] RPAREN {
		mtch.reset(new Matching::RepeatedMatch(m_cond));
	}
;

// Match condition - is(ann_name)
// Returns boost::shared_ptr<Matching::IsAnnotatedAs>
match_cond_is
	returns [boost::shared_ptr<Matching::IsAnnotatedAs> mtch]
	: "is" LPAREN annotation_name: STRING RPAREN {
		mtch.reset(new Matching::IsAnnotatedAs(token_ref_to_std_string(annotation_name)));
	}
;

// Match condition - text(text)
// Returns boost::shared_ptr<Matching::MatchText>
match_cond_text
	returns [boost::shared_ptr<Matching::MatchText> mtch]
	: "text" LPAREN txt: STRING RPAREN {
		mtch.reset(new Matching::MatchText(token_ref_to_ustring(txt)));
	}
;

// Match condition - oneof(variant1(v1), variant(v2), ...)
// Returns boost::shared_ptr<Matching::OneOf>
match_cond_oneof
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::OneOf> onf]
{
	boost::shared_ptr<std::vector<boost::shared_ptr<Matching::ConjConditions> > > variants;
}
	: "oneof" LPAREN variants = match_variants [scope] RPAREN {
		onf.reset(new Matching::OneOf(variants));
	}
;

// Match condition - longest(variant1(v1), variant(v2), ...)
// Returns boost::shared_ptr<Matching::Longest>
match_cond_longest
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::Longest> lng]
{
	boost::shared_ptr<std::vector<boost::shared_ptr<Matching::ConjConditions> > > variants;
}
	: "longest" LPAREN variants = match_variants [scope] RPAREN {
		lng.reset(new Matching::Longest(variants));
	}
;

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

// Match actions. Match action can be mark or unmark
// Returns boost::shared_ptr<Matching::MatchAction>
match_action
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::MatchAction> m_act]
	: m_act = match_mark_action   [scope]
	| m_act = match_unmark_action [scope]
	| m_act = match_remark_action [scope]
;

// Match mark action
// Returns 
match_mark_action
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::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_operator[scope] COMMA
			( match_to  = match_operator[scope] COMMA
				( head_match = match_operator[scope] COMMA )?
			)?
			annotation_name : STRING
		RPAREN {
			if (!match_to) {
				m_act.reset(
					new Matching::MarkMatch(
						match_from,
						((antlr::Token*)annotation_name)->getText()));
			} else {
				if (!head_match) {
					m_act.reset(
						new Matching::MarkMatch(
							match_from,
							match_to,
							((antlr::Token*)annotation_name)->getText()));
				} else {
					m_act.reset(
						new Matching::MarkMatch(
							match_from,
							match_to,
							head_match,
							((antlr::Token*)annotation_name)->getText()));
				}
			}
		}
;

// Match unmark action
// Returns boost::shared_ptr<Matching::UnmarkMatch>
match_unmark_action
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::UnmarkMatch> m_act]
{
	boost::shared_ptr<Function<Match> > match_at;
}
	: "unmark" LPAREN
				match_at = match_operator[scope] COMMA
				annotation_name : STRING
			RPAREN {
				m_act.reset(
					new Matching::UnmarkMatch(
							match_at,
							((antlr::Token*)annotation_name)->getText()));
			}
;

// Overwrite-match mark action ("remark")
// Returns 
match_remark_action
	[ParsingScope& scope]
	returns [boost::shared_ptr<Matching::OverwriteMatch> m_act]
{
	boost::shared_ptr<Function<Match> > match_to;
	boost::shared_ptr<Function<Match> > match_from;
	boost::shared_ptr<Function<Match> > head_match;
}
	: "remark" LPAREN 
			match_from = match_operator[scope] COMMA
			( match_to  = match_operator[scope] COMMA
				( head_match = match_operator[scope] COMMA )?
			)?
			annotation_name : STRING
		RPAREN {
			if (!match_to) {
				m_act.reset(
					new Matching::OverwriteMatch(
						match_from,
						((antlr::Token*)annotation_name)->getText()));
			} else {
				if (!head_match) {
					m_act.reset(
						new Matching::OverwriteMatch(
							match_from,
							match_to,
							((antlr::Token*)annotation_name)->getText()));
				} else {
					m_act.reset(
						new Matching::OverwriteMatch(
							match_from,
							match_to,
							head_match,
							((antlr::Token*)annotation_name)->getText()));
				}
			}
		}
;

// Match action separated by comma
// Returns boost::shared_ptr<std::vector<boost::shared_ptr<Matching::MatchAction> > >
match_action_comma_sep
	[ParsingScope& scope]
	returns [boost::shared_ptr<std::vector<boost::shared_ptr<Matching::MatchAction> > > r_vec]
{
	boost::shared_ptr<Matching::MatchAction> act;

	r_vec.reset(
		new std::vector<boost::shared_ptr<Matching::MatchAction> >
	);
}
	: act = match_action [scope] {
			r_vec->push_back(act);
	}
	(
		COMMA act = match_action [scope] {
			r_vec->push_back(act);
		}
	)*
;

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
// ANTLR LEXER
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
class ANTLRLexer extends Lexer;
options {
	exportVocab    = ANTLRExpr;
	charVocabulary = '\3'..'\377';
	testLiterals   = false;
	k              = 2;
}


// TODO
STRING
options {
	paraphrase = "a string";
}
	: '"'!  (~('"'  | '\n' | '\r'))* '"'!
	| '\''! (~('\'' | '\n' | '\r'))* '\''!
;

SIGNED_INT
options {
	paraphrase = "Signed integer";
}
	: ('-'|'+') (' '!|'\t'!)* ('0'..'9')+ 
;	

UNSIGNED_INT
options {
	paraphrase = "Unsigned integer";
}
	: ('0'..'9')+ 
;	


QUOT_MARK
options {
	paraphrase = "Quote";
} 
	: '\'' 
;

APOS_MARK
options {
	paraphrase = "Apostrophe";
}
	: '"' 
;

Q_MARK
options {
	paraphrase = "Question mark";
}
	: '?'
;

E_MARK
options {
	paraphrase = "Exclamation mark";
}
	: '!'
;

STR_PREFIX
options {
	paraphrase = "String prefix";
}
	: "$s:"
;

TST_PREFIX
options {
	paraphrase = "Symset prefix";
}
	: "$t:"
;

BOOL_PREFIX
options {
	paraphrase = "Bool prefix";
}
	: "$b:"
;

POS_PREFIX
options {
	paraphrase = "Position prefix";
}
	: '$'
;

MATCH_VECTOR_PREFIX
options {
	paraphrase = "Match vector prefix";
}
	: "$m:"
;

STR_SECTION_PREFIX
options {
	paraphrase = "Wccl file string operators section prefix";
}
	: "@s:"
;

POS_SECTION_PREFIX
options {
	paraphrase = "Wccl file position operators section prefix";
}
	: "@p:"
;

BOOL_SECTION_PREFIX
options {
	paraphrase = "Wccl file bool operators section prefix";
}
	: "@b:"
;

TST_SECTION_PREFIX
options {
	paraphrase = "Wccl file symset operators section prefix";
}
	: "@t:"
;

MATCH_SECTION_PREFIX
options {
	paraphrase = "Wccl file symset operators section prefix";
}
	: "@m:"
;

LBRACKET 
options {
	paraphrase = "'['";
}
	: '[' 
;

RBRACKET 
options {
	paraphrase = "']'";
}
	: ']' 
;

LPAREN
options {
	paraphrase = "'('";
}   
	: '(' 
;

RPAREN 
options {
	paraphrase = "')'";
} 
	: ')' 
;

LCURLY 
options {
	paraphrase = "'{'";
} 
	: '{'