Handle lexical printer exception and revert to default code printer

Signed-off-by: Saurabh Sinha <sinha108@gmail.com>

Author: sinha108

src/main/java/com/ibm/cldk/SymbolTable.java

@@ -11,6 +11,7 @@
 import com.github.javaparser.ast.stmt.*;
 import com.github.javaparser.ast.type.ReferenceType;
 import com.github.javaparser.ast.type.Type;
+import com.github.javaparser.printer.DefaultPrettyPrinter;
 import com.github.javaparser.printer.lexicalpreservation.LexicalPreservingPrinter;
 import com.github.javaparser.resolution.declarations.ResolvedMethodDeclaration;
 import com.github.javaparser.resolution.declarations.ResolvedMethodLikeDeclaration;
@@ -554,7 +555,15 @@ private static Pair<String, Callable> processCallableDeclaration(CallableDeclara
         callableNode.setStartLine(callableDecl.getRange().isPresent() ? callableDecl.getRange().get().begin.line : -1);
         callableNode.setEndLine(callableDecl.getRange().isPresent() ? callableDecl.getRange().get().end.line : -1);
         callableNode.setReferencedTypes(getReferencedTypes(body));
-        callableNode.setCode(body.isPresent() ? LexicalPreservingPrinter.print(body.get()) : "");
+        try {
+            callableNode.setCode(body.isPresent() ? LexicalPreservingPrinter.print(body.get()) : "");
+        } catch (UnsupportedOperationException uoe) {
+            Log.warn("LexicalPreservingPrinter.print() failed on method " + callableDecl.getSignature() +
+                    " of type "+typeName);
+            Log.warn("Reverting to default printing");
+            Log.warn(body.get().toString());
+            callableNode.setCode(body.get().toString());
+        }
         callableNode.setCodeStartLine(body.isPresent()? body.get().getBegin().get().line : -1);
 
         callableNode.setAccessedFields(getAccessedFields(body, classFields, typeName));

src/test/java/com/ibm/cldk/SymbolTableTest.java

@@ -56,6 +56,17 @@ public void testExtractSingleMissingNodeRange() throws IOException {
         Assertions.assertEquals(2, typeDeclaration.size());
     }
 
+    @Test
+    public void testExtractSingleDefaultKeywordMethodDecl() throws IOException {
+        String javaCode = getJavaCodeForTestResource("test-applications/default-keyword-method-decl/IndexExtractor.java");
+        Map<String, JavaCompilationUnit> symbolTable = SymbolTable.extractSingle(javaCode).getLeft();
+        Assertions.assertEquals(1, symbolTable.size());
+        Map<String, Type> typeDeclaration = symbolTable.values().iterator().next().getTypeDeclarations();
+        Assertions.assertEquals(1, typeDeclaration.size());
+        Map<String, Callable> callables = typeDeclaration.values().iterator().next().getCallableDeclarations();
+        Assertions.assertEquals(5, callables.size());
+    }
+
     @Test
     public void testCallSiteArgumentExpression() throws IOException {
         String javaCode = getJavaCodeForTestResource("test-applications/generics-varargs-duplicate-signature-test/Validate.java");