Starting a Java implementation of ast-to-instr.

Keeping things clean, this time.

1 files changed, 78 insertions, 0 deletions

diff --git a/ast-to-instr/src/IDs.java b/ast-to-instr/src/IDs.java
new file mode 100644
index 0000000..e3b9db4
--- /dev/null
+++ b/ast-to-instr/src/IDs.java
@@ -0,0 +1,78 @@
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Map;
+import java.util.HashMap;
+
+public class IDs
+{
+   /** Static *****************************************************************/
+   private static final Map<String, IDs> FROM_XML;
+   private static final Collection<IDs> ALL_IDS;
+   private static int next_id;
+
+   static
+   {
+      next_id = 0;
+
+      FROM_XML = new HashMap<String, IDs>();
+      ALL_IDS = new ArrayList<IDs>();
+   }
+
+
+   public static IDs get_id_from_xml_id
+   (
+      final String xml_id,
+      final String type
+   )
+   {
+      IDs result;
+
+      result = FROM_XML.get(xml_id);
+
+      if (result == null)
+      {
+         result = new IDs(type);
+
+         FROM_XML.put(xml_id, result);
+      }
+
+      return result;
+   }
+
+   public static IDs generate_new_id
+   (
+      final String type
+   )
+   {
+      final IDs result;
+
+      result = new IDs(type);
+
+      ALL_IDS.add(result);
+
+      return result;
+   }
+
+   /** Non-Static *************************************************************/
+   private final String type;
+   private final int value;
+
+   private IDs (final String type)
+   {
+      this.type = type;
+
+      value = IDs.next_id;
+
+      IDs.next_id += 1;
+   }
+
+   public String get_type ()
+   {
+      return type;
+   }
+
+   public int get_value ()
+   {
+      return value;
+   }
+}