Rethrow ParseError using the RuntimeExceptionFactory inside a Vallang function (so it can be caught in Rascal code that calls the function) (#648)

Author: sungshik

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

@@ -57,6 +57,7 @@
 import org.rascalmpl.interpreter.env.ModuleEnvironment;
 import org.rascalmpl.library.Prelude;
 import org.rascalmpl.library.util.PathConfig;
+import org.rascalmpl.parser.gtd.exception.ParseError;
 import org.rascalmpl.types.RascalTypeFactory;
 import org.rascalmpl.uri.URIResolverRegistry;
 import org.rascalmpl.uri.URIUtil;
@@ -197,6 +198,8 @@ IFunction makeParseTreeGetter(Evaluator e) {
                 return RascalServices.parseRascalModule(resolvedLocation, Prelude.consumeInputStream(reader).toCharArray());
             } catch (IOException e1) {
                 throw RuntimeExceptionFactory.io("Could not open " + t[0] + " for reading");
+            } catch (ParseError pe) {
+                throw RuntimeExceptionFactory.parseError(pe.getLocation());
             }
         });
     }