upd: first version of atom

src/names.cpp

@@ -1,3 +1,36 @@
 #include "names.h"
 
-#include "utils.h"
+#include "utils.h"
+
+inline void VariableContainer::CreateFrame() {
+  StackScopes.push(std::unordered_map<std::string, std::any>());
+}
+void VariableContainer::DestroyFrame() {
+  if (StackScopes.empty()) throw FatalError("DestroyFrame: empty stack");
+  StackScopes.pop();
+}
+std::any VariableContainer::ReadVariable(const std::string &name) {
+  if (StackScopes.size()) {
+    auto &top = StackScopes.top();
+    if (top.find(name) != top.end()) return top[name];
+  }
+  if (GlobalScope.find(name) != GlobalScope.end()) return GlobalScope[name];
+  throw InterpretException(("ReadVariable: " + name + " not found").c_str());
+}
+void VariableContainer::WriteVariable(const std::string &name,
+                                      const std::any &value) {
+  if (StackScopes.empty()) {
+    GlobalScope[name] = value;
+    return;
+  }
+  auto &top = StackScopes.top();
+  if (top.find(name) != top.end()) {
+    top[name] = value;
+    return;
+  }
+  if (GlobalScope.find(name) != GlobalScope.end()) {
+    GlobalScope[name] = value;
+    return;
+  }
+  top[name] = value;
+}