npe fix

Author: asosnoviy

src/main/java/com/github/_1c_syntax/bsl/languageserver/context/computer/VariableSymbolComputer.java

@@ -158,12 +158,7 @@ public ParseTree visitAssignment(BSLParser.AssignmentContext ctx) {
       return lValue;
     }
 
-    var typeName = "";
-    var newCtx = Trees.getNextNode(ctx.expression(), ctx.expression(), BSLParser.RULE_newExpression);
-    if (newCtx instanceof BSLParser.NewExpressionContext) {
-      typeName = ((BSLParser.NewExpressionContext) newCtx).typeName().getText();
-    }
-    updateVariablesCache(lValue.IDENTIFIER(), createDescription(lValue), typeName);
+    updateVariablesCache(lValue.IDENTIFIER(), createDescription(lValue), typeName(ctx));
     return ctx;
   }
 
@@ -274,4 +269,16 @@ private void updateVariablesCache(TerminalNode node, Optional<VariableDescriptio
     }
   }
 
+  private String typeName(BSLParser.AssignmentContext ctx) {
+    var typeName = "";
+    var newCtx = Trees.getNextNode(ctx.expression(), ctx.expression(), BSLParser.RULE_newExpression);
+    if (newCtx instanceof BSLParser.NewExpressionContext) {
+      var typeNamectx = ((BSLParser.NewExpressionContext) newCtx).typeName();
+      if (typeNamectx != null) {
+        typeName = typeNamectx.getText();
+      }
+    }
+    return typeName;
+  }
+
 }

src/main/java/com/github/_1c_syntax/bsl/languageserver/references/OscriptReferenceFinder.java

@@ -48,7 +48,7 @@ public class OscriptReferenceFinder implements ReferenceFinder {
   public Optional<Reference> findReference(URI uri, Position position) {
 
     DocumentContext document = serverContext.getDocument(uri);
-    if (document == null) {
+    if (document == null || document.isComputedDataFrozen()) {
       return Optional.empty();
     }