started working with the string module

string.cpp

@@ -0,0 +1,42 @@
+#include "string.h"
+#include <stack>
+#include <vector>
+
+static std::stack<int> scopes_start;
+static std::vector<std::string> strings;
+static std::vector<std::string> string_constants;
+static int num_strings = 0;
+static int max_strings = 0;
+
+void string_scope_start() {
+    scopes_start.push(num_strings);
+}
+
+void string_scope_end() {
+    num_strings = scopes_start.top();
+    scopes_start.pop();
+}
+
+const uint32_t string_add_variable() {
+    num_strings++;
+    if (max_strings < num_strings) max_strings = num_strings;
+    return num_strings-1;
+}
+
+void string_init() {
+    for (int i = 0; i < max_strings; i++) strings.push_back("");
+}
+
+void string_set_variable(const uint32_t id, const std::string str) {
+    strings[id] = str;
+}
+
+const std::string string_get_variable(const uint32_t id) {
+    return strings[id];
+}
+
+const uint32_t string_get_constant(const std::string str) {
+    for (int i = 0; i < string_constants.size(); i++) { if (string_constants[i] == str) return i; }
+    string_constants.push_back(str);
+    return string_constants.size()-1;
+}

string.h

@@ -0,0 +1,11 @@
+#pragma once
+#include <stdint.h>
+#include <string>
+
+void string_init();
+void string_scope_start();
+void string_scope_end();
+const uint32_t string_get_constant(const std::string str);
+const uint32_t string_add_variable();
+void string_set_variable(const uint32_t id, const std::string str);
+const std::string string_get_variable(const uint32_t id);