1 files changed, 52 insertions, 0 deletions
diff --git a/javaparser-core/src/main/java/com/github/javaparser/ast/validator/Java5Validator.java b/javaparser-core/src/main/java/com/github/javaparser/ast/validator/Java5Validator.java
new file mode 100644
index 000000000..d8b1aab1b
--- /dev/null
+++ b/javaparser-core/src/main/java/com/github/javaparser/ast/validator/Java5Validator.java
@@ -0,0 +1,52 @@
+package com.github.javaparser.ast.validator;
+
+import com.github.javaparser.ast.Node;
+import com.github.javaparser.ast.NodeList;
+import com.github.javaparser.ast.nodeTypes.NodeWithTypeArguments;
+import com.github.javaparser.ast.type.PrimitiveType;
+import com.github.javaparser.ast.type.Type;
+
+import java.util.Optional;
+
+/**
+ * This validator validates according to Java 5 syntax rules.
+ */
+public class Java5Validator extends Java1_4Validator {
+    Validator genericsWithoutDiamondOperator = new TreeVisitorValidator((node, reporter) -> {
+        if (node instanceof NodeWithTypeArguments) {
+            Optional<NodeList<Type>> typeArguments = ((NodeWithTypeArguments<? extends Node>) node).getTypeArguments();
+            if (typeArguments.isPresent() && typeArguments.get().isEmpty()) {
+                reporter.report(node, "The diamond operator is not supported.");
+            }
+        }
+    });
+
+    protected Validator noPrimitiveGenericArguments = new TreeVisitorValidator((node, reporter) -> {
+        if (node instanceof NodeWithTypeArguments) {
+            Optional<NodeList<Type>> typeArguments = ((NodeWithTypeArguments<? extends Node>) node).getTypeArguments();
+            typeArguments.ifPresent(types -> types.forEach(ty -> {
+                if (ty instanceof PrimitiveType) {
+                    reporter.report(node, "Type arguments may not be primitive.");
+                }
+            }));
+        }
+    });
+
+    protected final Validator enumNotAllowed = new ReservedKeywordValidator("enum");
+
+    public Java5Validator() {
+        super();
+        replace(noGenerics, genericsWithoutDiamondOperator);
+        add(noPrimitiveGenericArguments);
+        add(enumNotAllowed);
+        
+        // TODO validate annotations on classes, fields and methods but nowhere else
+        // The following is probably too simple.
+        remove(noAnnotations);
+
+        remove(noEnums);
+        remove(noVarargs);
+        remove(noForEach);
+        remove(noStaticImports);
+    }
+}