to_string for llook now writes right pos first.

libwccl/ops/functions/bool/iterations/leftlook.cpp

@@ -17,4 +17,24 @@ bool LeftLook::iterate(
 	return false;
 }
 
+std::string LeftLook::to_string(const Corpus2::Tagset& tagset) const
+{
+	std::ostringstream ss;
+	ss << name(tagset) << "("
+		<< right_pos_expr_->to_string(tagset) << ", "
+		<< left_pos_expr_->to_string(tagset) << ", "
+		<< Position::var_repr(iter_var_acc_.get_name()) << ", "
+		<< evaluating_expr_->to_string(tagset) << ")";
+	return ss.str();
+}
+
+std::ostream& LeftLook::write_to(std::ostream& os) const
+{
+	return os << raw_name() << "("
+			<< *right_pos_expr_ << ", "
+			<< *left_pos_expr_ << ", "
+			<< Position::var_repr(iter_var_acc_.get_name()) << ", "
+			<< *evaluating_expr_ << ")";
+}
+
 } /* end ns Wccl */

libwccl/ops/functions/bool/iterations/leftlook.h

@@ -29,6 +29,12 @@ public:
 		return "llook";
 	}
 
+	/**
+	 * @returns String reperesentation of LeftLook Operator:
+	 * llook(right_pos_expr, left_pos_expr, variable, eval_expr, min_matches)
+	 */
+	std::string to_string(const Corpus2::Tagset& tagset) const;
+
 protected:
 	/**
 	 * @returns True if, when scanning right-to-left,
@@ -46,6 +52,15 @@ protected:
 		int right,
 		Position &p,
 		const FunExecContext &context) const;
+
+	/**
+	 * Writes raw string reperesentation of LeftLook operator, in form of
+	 * llook(raw_right_p_expr, raw_left_p_expr, var, raw_eval_expr, min_matches)
+	 * @note This version doesn't require a Tagset, but may
+	 * be incomplete and/or contain internal info.
+	 * @returns Stream written to.
+	 */
+	std::ostream& write_to(std::ostream& ostream) const;
 };