add context

src/context.rs

@@ -0,0 +1,21 @@
+use std::collections::HashMap;
+
+#[derive(Debug)]
+pub struct Context {
+    ptr: isize,
+    stack: Vec<isize>,
+    label_map: HashMap<isize, isize>,
+    mem_map: HashMap<isize, isize>,
+}
+
+impl Context {
+
+    pub fn new() -> Self {
+        Self {
+            ptr: 0,
+            stack: vec![],
+            label_map: HashMap::new(),
+            mem_map: HashMap::new(),
+        }
+    }
+}