Unwrap NoContributionException.

Author: toinehartman

rascal-lsp/src/main/java/org/rascalmpl/vscode/lsp/TextDocumentState.java

@@ -132,7 +132,7 @@ public CompletableFuture<Versioned<ITree>> getCurrentTreeAsync(boolean allowReco
     }
 
     /**
-     * Wait for current tree to parse. Then return the last tree that matches the allowRecoveredErrors conditation.
+     * Wait for current tree to parse. Then return the last tree that matches the allowRecoveredErrors condition.
      * @param allowRecoveredErrors if false, the result will not contain a tree with recovered errors.
      * @return the last parse tree, or an exception if non existed.
      */

rascal-lsp/src/main/java/org/rascalmpl/vscode/lsp/parametric/NoContributions.java

@@ -87,7 +87,7 @@ public String getName() {
 
     @Override
     public CompletableFuture<ITree> parsing(ISourceLocation loc, String input) {
-        return CompletableFuture.failedFuture(new NoContributionException("parsing"));
+        throw new NoContributionException("parsing");
     }
 
     @Override