split out tokenizer class

neopb.cpp

@@ -4,27 +4,7 @@
 #include <unordered_map>
 #include <vector>
 
-typedef enum {
-    FUNCTION,
-    SUB,
-    END,
-    AS,
-    TYPE,
-    IDENTIFIER,
-    INTEGER,
-    STRING,
-    OPAREN,
-    CPAREN,
-    COMMA,
-    QUOTE,
-    EQUALS,
-    TOKEN_TYPE_COUNT
-} PBTokenType;
-
-typedef struct {
-    PBTokenType type;
-    std::string value;
-} PBToken;
+#include "tokenizer.hpp"
 
 std::vector<PBToken> tokenize(std::string code);
 
@@ -38,6 +18,7 @@ int main(int argc, char* argv[]) {
 
 std::vector<PBToken> tokenize(std::string code) {
     const PBToken tokenize_one = [](std::string fragment) {
+        //const std::unordered_map<PBTokenType, std::regex> tokentypes = std::unordered_map();
         const std::regex re_func("\bfunction\b", std::regex_constants::icase);
         const std::regex re_sub( "\bsub\b", std::regex_constants::icase);
         const std::regex re_end( "\bend\b", std::regex_constants::icase);
@@ -63,7 +44,7 @@ std::vector<PBToken> tokenize(std::string code) {
     while(code.length() > 0) {
         int split = code.find(' ');
         std::string fragment = split > 0 ? code.substr(0, split) : code;
-        tokens.push_back(tokenize_one(fragment));
+        tokens.push_back(fragment);
     }
     return tokens;
 }

tokenizer.hpp

@@ -0,0 +1,38 @@
+#pragma once
+#ifndef TOKENIZER_HPP
+#define TOKENIZER_HPP
+
+#include <regex>
+#include <unordered_map>
+
+typedef enum {
+    FUNCTION,
+    SUB,
+    END,
+    AS,
+    TYPE,
+    IDENTIFIER,
+    INTEGER,
+    STRING,
+    OPAREN,
+    CPAREN,
+    COMMA,
+    QUOTE,
+    EQUALS,
+    TOKEN_TYPE_COUNT
+} PBTokenType;
+
+typedef struct {
+    PBTokenType type;
+    std::string value;
+} PBToken;
+
+class Tokenizer {
+    std::unordered_map<PBTokenType, std::regex> tokentypes;
+    std::string code;
+public:
+    Tokenizer(std::string);
+    std::vector<PBToken> tokenize();
+    PBToken tokenize_one_token();
+};
+#endif