combining regex with operators | and >>

Author: Hana Dusíková

include/ctre.hpp

@@ -5,5 +5,6 @@
 #include "ctre/functions.hpp"
 #include "ctre/iterators.hpp"
 #include "ctre/range.hpp"
+#include "ctre/operators.hpp"
 
 #endif

include/ctre/operators.hpp

@@ -0,0 +1,12 @@
+#ifndef CTRE_V2__CTRE__OPERATORS__HPP
+#define CTRE_V2__CTRE__OPERATORS__HPP
+
+template <typename A, typename B> constexpr auto operator|(ctre::regular_expression<A>, ctre::regular_expression<B>) -> ctre::regular_expression<ctre::select<A,B>> {
+	return {};
+}
+
+template <typename A, typename B> constexpr auto operator>>(ctre::regular_expression<A>, ctre::regular_expression<B>) -> ctre::regular_expression<ctre::sequence<A,B>> {
+	return {};
+}
+
+#endif

tests/matching2.cpp

@@ -186,3 +186,8 @@ static_assert("[A-Z_a-z]"_ctre.match("a"));
 static_assert("[A-Z_a-z]"_ctre.match("_"));
 static_assert("[A-Z_a-z]"_ctre.match("Z"));
 
+static_assert(("[a-z]"_ctre >> "[0-9]"_ctre).match("a9"));
+static_assert(("a"_ctre | "b"_ctre).match("a"));
+static_assert(("a"_ctre | "b"_ctre).match("b"));
+static_assert(!("a"_ctre | "b"_ctre).match("c"));
+