split server into multiple components

In a vague attempt to make header files more readable, split server/
into a number of components.
Also, refactor the unit tests to use the "Data-driven test cases" of
Boost.Test.

1 files changed, 37 insertions, 0 deletions

diff --git a/server/lexer/token_type.hpp b/server/lexer/token_type.hpp
new file mode 100644
index 0000000..9489915
--- /dev/null
+++ b/server/lexer/token_type.hpp
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <ostream>
+#include <string>
+#include <type_traits>
+#include <unordered_set>
+
+namespace math::server::lexer::token {
+
+enum class Type {
+    WHITESPACE,
+    PLUS,
+    MINUS,
+    ASTERISK,
+    SLASH,
+    LEFT_PAREN,
+    RIGHT_PAREN,
+    NUMBER,
+};
+
+using TypeInt = std::underlying_type<Type>::type;
+using TypeSet = std::unordered_set<Type>;
+
+TypeInt type_to_int(Type);
+std::string type_to_int_string(Type);
+
+bool is_const_token(Type);
+const TypeSet& const_tokens();
+
+bool token_has_value(Type);
+
+std::string type_to_string(Type);
+Type type_from_string(const std::string&);
+
+std::ostream& operator<<(std::ostream&, const Type&);
+
+}