1 files changed, 63 insertions, 0 deletions
diff --git a/code/simpleSableCCCalulator/sableCCCalculator/SymbolTable.java b/code/simpleSableCCCalulator/sableCCCalculator/SymbolTable.java
new file mode 100644
index 0000000..992e873
--- /dev/null
+++ b/code/simpleSableCCCalulator/sableCCCalculator/SymbolTable.java
@@ -0,0 +1,63 @@
+package sableCCCalculator;
+import java.util.HashMap;
+import sableCCCalculator.types.*;
+
+public class SymbolTable {
+
+    public interface SymbolTableIndex {}
+
+    public abstract class Name implements SymbolTableIndex {        
+        // can be used for functions too hopefully one day...
+        protected String name;
+
+        String getName() {
+            return this.name;
+        }
+    }
+
+    public class Constant implements SymbolTableIndex {
+        int index;
+
+        public Constant(int index) {
+            this.index = index;
+        }
+    }
+
+    public class Variable extends Name {
+        public Variable(String name) {
+            this.name = name;
+        }
+    }
+
+    private HashMap<SymbolTableIndex, Type> theSymbolTable = new HashMap<>();
+
+    public SymbolTableIndex addConstant(Type item) {
+        SymbolTableIndex index = new Constant(item.hashCode());
+        theSymbolTable.put(index, item);
+        return index;
+    }
+
+    public SymbolTableIndex addVariable(Type item, String name) {
+        SymbolTableIndex index = new Variable(name);
+        theSymbolTable.put(index, item);
+        return index;
+    }
+
+    public void updateVariable(Type newItem, SymbolTableIndex index) {
+        theSymbolTable.replace(index, newItem);
+    }
+
+    public Type get(SymbolTableIndex index) {
+        return theSymbolTable.get(index);
+    }
+
+    public static void main(String[] args) {
+        SymbolTable symbolTable = new SymbolTable();
+        symbolTable.addConstant(new Int(3));
+        SymbolTableIndex i_var = symbolTable.addVariable(new Int(0), "i");
+        System.out.println(symbolTable.get(i_var));
+        symbolTable.updateVariable(symbolTable.get(i_var).add(new Int(1)), i_var);
+        System.out.println(symbolTable.get(i_var));
+    }
+}
+ 
+\ No newline at end of file