Load symbols from the json

main.cpp

@@ -3,6 +3,9 @@
 #include <string>
 #include <cctype>
 #include <map>
+#include <fstream>
+
+#include <nlohmann/json.hpp>
 
 // Comp map
 const std::map<std::string, std::string> compMap = {
@@ -92,7 +95,14 @@ static inline std::string strip(const std::string &s) {
     return result;
 }
 
+using symbolsMap = std::map<std::string, int>;
+
 int main() {
+    // Load predefined symbols
+    std::ifstream file("./symbols.json");
+    nlohmann::json symbols_json = nlohmann::json::parse(file);
+    symbolsMap symbols_map = symbols_json.get<symbolsMap>();
+
     std::string line;
     while (std::getline(std::cin, line)) {
         line = trim(line);

symbols.json

@@ -0,0 +1,27 @@
+{
+  "SP":   0,
+  "LCL":  1,
+  "ARG":  2,
+  "THIS": 3,
+  "THAT": 4,
+
+  "R0":  0,
+  "R1":  1,
+  "R2":  2,
+  "R3":  3,
+  "R4":  4,
+  "R5":  5,
+  "R6":  6,
+  "R7":  7,
+  "R8":  8,
+  "R9":  9,
+  "R10": 10,
+  "R11": 11,
+  "R12": 12,
+  "R13": 13,
+  "R14": 14,
+  "R15": 15,
+
+  "SCREEN": 16384,
+  "KBD":    24576
+}