Method process

src/main/java/groovy/ui/GroovyMain.java:274–343

Process the users request. @param parser the parsed command line. Used when the user input was invalid. @throws ParameterException if the user input was invalid

(CommandLine parser)

         * @throws ParameterException if the user input was invalid
         */
        boolean process(CommandLine parser) throws ParameterException, IOException {
            for (Map.Entry<String, String> entry : systemProperties.entrySet()) {
                System.setProperty(entry.getKey(), entry.getValue());
            }

            final GroovyMain main = new GroovyMain();

            // add the ability to parse scripts with a specified encoding
            if (encoding != null) main.conf.setSourceEncoding(encoding);

            main.debug = debug;
            main.conf.setDebug(main.debug);
            main.conf.setParameters(parameterMetadata);
            main.conf.setPreviewFeatures(previewFeatures);
            main.processFiles = lineByLine || lineByLinePrint;
            main.autoOutput = lineByLinePrint;
            main.editFiles = extension != null;
            if (main.editFiles) {
                main.backupExtension = extension;
            }

            main.autoSplit = splitPattern != null;
            if (main.autoSplit) {
                main.splitPattern = splitPattern;
            }

            main.isScriptFile = script == null;
            if (main.isScriptFile) {
                if (arguments.isEmpty()) {
                    throw new ParameterException(parser, "error: neither -e or filename provided");
                }
                main.script = arguments.remove(0);
                if (main.script.endsWith(".java")) {
                    throw new ParameterException(parser, "error: cannot compile file with .java extension: " + main.script);
                }
            } else {
                main.script = script;
            }

            main.processSockets = port != null;
            if (main.processSockets) {
                String p = !port.trim().isEmpty() ? port : "1960"; // default port to listen to
                main.port = Integer.parseInt(p);
            }

            for (String optimization : disableopt) {
                main.conf.getOptimizationOptions().put(optimization, false);
            }

            if (scriptBaseClass != null) {
                main.conf.setScriptBaseClass(scriptBaseClass);
            }

            final List<String> transformations = new ArrayList<>();
            if (compileStatic) {
                transformations.add("ast(groovy.transform.CompileStatic)");
            }
            if (typeChecked) {