Namespace the lexer module

Future proofing any name collisions.

src/lexer.cpp

@@ -24,9 +24,13 @@ static_assert(NUMBER_OF_OPCODES == 99, "ERROR: Lexer is out of date");
 
 using std::string, std::string_view, std::pair, std::make_pair;
 
-const auto VALID_SYMBOL = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUV"
+namespace Lexer
+{
+  constexpr auto VALID_SYMBOL =
+                     "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUV"
                      "WXYZ0123456789-_.:%#$",
-           VALID_DIGIT = "0123456789", VALID_HEX = "0123456789abcdefABCDEF";
+                 VALID_DIGIT = "0123456789",
+                 VALID_HEX   = "0123456789abcdefABCDEF";
 
   bool is_char_in_s(char c, const char *s)
   {
@@ -275,9 +279,9 @@ pair<Token, lerr_t> tokenise_literal_char(string_view &source, size_t &column,
       // Escape sequence
       char escape = '\0';
       if (source.size() < 4 || source[3] != '\'')
-      return make_pair(t,
-                       lerr_t(lerr_type_t::INVALID_CHAR_LITERAL_ESCAPE_SEQUENCE,
-                              column, line));
+        return make_pair(
+            t, lerr_t(lerr_type_t::INVALID_CHAR_LITERAL_ESCAPE_SEQUENCE, column,
+                      line));
       switch (source[2])
       {
       case 'n':
@@ -294,9 +298,9 @@ pair<Token, lerr_t> tokenise_literal_char(string_view &source, size_t &column,
         break;
       default:
         column += 2;
-      return make_pair(t,
-                       lerr_t(lerr_type_t::INVALID_CHAR_LITERAL_ESCAPE_SEQUENCE,
-                              column, line));
+        return make_pair(
+            t, lerr_t(lerr_type_t::INVALID_CHAR_LITERAL_ESCAPE_SEQUENCE, column,
+                      line));
         break;
       }
       t = Token{Token::Type::LITERAL_CHAR, std::to_string(escape), column};
@@ -334,7 +338,8 @@ lerr_t tokenise_buffer(string_view source, std::vector<Token *> &tokens)
       {
         size_t i;
         for (i = 0;
-           i < source.size() && (isspace(source[i]) || source[i] == '\0'); ++i)
+             i < source.size() && (isspace(source[i]) || source[i] == '\0');
+             ++i)
         {
           ++column;
           if (source[i] == '\n')
@@ -563,3 +568,4 @@ std::ostream &operator<<(std::ostream &os, lerr_t &lerr)
   lerr_t::lerr_t(lerr_type_t type, size_t col, size_t line)
       : col{col}, line{line}, type{type}
   {}
+} // namespace Lexer

src/lexer.hpp

@@ -18,6 +18,8 @@
 #include <tuple>
 #include <vector>
 
+namespace Lexer
+{
   struct Token
   {
     enum class Type
@@ -100,5 +102,6 @@ struct lerr_t
   std::ostream &operator<<(std::ostream &, lerr_t &);
 
   lerr_t tokenise_buffer(std::string_view, std::vector<Token *> &);
+} // namespace Lexer
 
 #endif

src/main.cpp

@@ -30,6 +30,8 @@ extern "C"
 using std::cout, std::cerr, std::endl;
 using std::pair, std::string, std::string_view, std::vector;
 
+using Lexer::Token, Lexer::lerr_t, Lexer::lerr_type_t;
+
 void usage(const char *program_name, FILE *fp)
 {
   fprintf(fp,

src/preprocesser.cpp

@@ -18,6 +18,8 @@
 
 using std::pair, std::vector, std::make_pair, std::string, std::string_view;
 
+using Lexer::Token, Lexer::lerr_t, Lexer::lerr_type_t;
+
 #define VCLEAR(V)                       \
   std::for_each((V).begin(), (V).end(), \
                 [](Token *t)            \

src/preprocesser.hpp

@@ -30,33 +30,34 @@ enum pp_err_type_t
 
 struct pp_err_t
 {
-  const Token *reference;
+  const Lexer::Token *reference;
   pp_err_type_t type;
-  lerr_t lerr;
+  Lexer::lerr_t lerr;
 
   pp_err_t();
   pp_err_t(pp_err_type_t);
-  pp_err_t(pp_err_type_t, const Token *);
-  pp_err_t(pp_err_type_t, const Token *, lerr_t);
+  pp_err_t(pp_err_type_t, const Lexer::Token *);
+  pp_err_t(pp_err_type_t, const Lexer::Token *, Lexer::lerr_t);
 };
 
 std::ostream &operator<<(std::ostream &, pp_err_t &);
 
 struct pp_unit_t
 {
-  const Token *const token;
+  const Lexer::Token *const token;
   struct
   {
     std::string_view name;
     std::vector<pp_unit_t> elements;
   } container;
 
-  pp_unit_t(const Token *const);
+  pp_unit_t(const Lexer::Token *const);
   pp_unit_t(std::string_view, std::vector<pp_unit_t>);
 };
 
-std::vector<pp_unit_t> tokens_to_units(const std::vector<Token *> &);
+std::vector<pp_unit_t> tokens_to_units(const std::vector<Lexer::Token *> &);
 pp_err_t preprocess_use(std::vector<pp_unit_t> &);
-pp_err_t preprocesser(const std::vector<Token *> &, std::vector<Token *> &);
+pp_err_t preprocesser(const std::vector<Lexer::Token *> &,
+                      std::vector<Lexer::Token *> &);
 
 #endif