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1 files changed, 55 insertions, 0 deletions

diff --git a/Homework/cs5300/p4-formatter/submit/SymbolTable.java b/Homework/cs5300/p4-formatter/submit/SymbolTable.java
new file mode 100644
index 0000000..bfa531e
--- /dev/null
+++ b/Homework/cs5300/p4-formatter/submit/SymbolTable.java
@@ -0,0 +1,55 @@
+package submit;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+/*
+ * Code formatter project
+ * CS 4481
+ */
+public class SymbolTable {
+
+  private final HashMap<String, SymbolInfo> table;
+  private SymbolTable parent;
+  private final List<SymbolTable> children;
+
+  public SymbolTable() {
+    table = new HashMap<>();
+    parent = null;
+    children = new ArrayList<>();
+  }
+
+  public void addSymbol(String id, SymbolInfo symbol) { table.put(id, symbol); }
+
+  /**
+   * Returns null if no symbol with that id is in this symbol table or an
+   * ancestor table.
+   *
+   * @param id
+   * @return
+   */
+  public SymbolInfo find(String id) {
+    if (table.containsKey(id)) {
+      return table.get(id);
+    }
+    if (parent != null) {
+      return parent.find(id);
+    }
+    return null;
+  }
+
+  /**
+   * Returns the new child.
+   *
+   * @return
+   */
+  public SymbolTable createChild() {
+    SymbolTable child = new SymbolTable();
+    children.add(child);
+    child.parent = this;
+    return child;
+  }
+
+  public SymbolTable getParent() { return parent; }
+}