1 files changed, 44 insertions, 0 deletions
diff --git a/st/SymTableExtend.java b/st/SymTableExtend.java
new file mode 100644
index 0000000..2e634d8
--- /dev/null
+++ b/st/SymTableExtend.java
@@ -0,0 +1,44 @@
+package st;
+
+import syntaxtree.*;
+import visitor.*;
+import java.util.*;
+import misc.*;
+
+/**
+ * Performs a bottom-up preliminary visit through the AST
+ * initializing all ClassInstances and placing them in the passed ST
+ */
+public class SymTableExtend<R> extends GJDepthFirst<R,SymbolTable> {
+
+
+    /**
+     * f0 -> "class"
+     * f1 -> Identifier()
+     * f2 -> "extends"
+     * f3 -> Identifier()
+     * f4 -> "{"
+     * f5 -> ( VarDeclaration() )*
+     * f6 -> ( MethodDeclaration() )*
+     * f7 -> "}"
+     */
+    public R visit(ClassExtendsDeclaration n, SymbolTable symt) {
+        String act = n.f1.f0.tokenImage;
+        symt.setActive(TypeEnum.classname, symt.getClass(act));
+        n.f0.accept(this, symt);
+        n.f1.accept(this, symt);
+        n.f2.accept(this, symt);
+        n.f3.accept(this, symt);
+        n.f4.accept(this, symt);
+        n.f5.accept(this, symt);
+        n.f6.accept(this, symt);
+        n.f7.accept(this, symt);
+
+
+        symt.setExtend(n.f3.f0.tokenImage);
+
+
+        return null;
+    }
+
+}