Examples with CancelCommandException com.laytonsmith.core.exceptions.CancelCommandException used on opensource projects

Example 1 with CancelCommandException

use of com.laytonsmith.core.exceptions.CancelCommandException in project CommandHelper by EngineHub.

the class Script method run.

public void run(final List<Variable> vars, Environment myEnv, final MethodScriptComplete done) {
    // Some things, such as the label are determined at compile time
    this.CurrentEnv = myEnv;
    this.CurrentEnv.getEnv(GlobalEnv.class).SetLabel(this.label);
    MCCommandSender p = myEnv.getEnv(CommandHelperEnvironment.class).GetCommandSender();
    if (!hasBeenCompiled || compilerError) {
        Target target = Target.UNKNOWN;
        if (left.size() >= 1) {
            try {
                target = new Target(left.get(0).line_num, left.get(0).file, left.get(0).column);
            } catch (NullPointerException e) {
            // Oh well, we tried to get more information
            }
        }
        throw ConfigRuntimeException.CreateUncatchableException("Unable to run command, script not yet compiled," + " or a compiler error occurred for that command. To see the compile error, run /reloadaliases", target);
    }
    enforceLabelPermissions();
    try {
        for (ParseTree rootNode : cright) {
            if (rootNode == null) {
                continue;
            }
            for (Construct tempNode : rootNode.getAllData()) {
                if (tempNode instanceof Variable) {
                    if (left_vars == null) {
                        throw ConfigRuntimeException.CreateUncatchableException("$variables may not be used in this context." + " Only @variables may be.", tempNode.getTarget());
                    }
                    Construct c = Static.resolveDollarVar(left_vars.get(((Variable) tempNode).getVariableName()), vars);
                    ((Variable) tempNode).setVal(new CString(c.toString(), tempNode.getTarget()));
                }
            }
            MethodScriptCompiler.registerAutoIncludes(CurrentEnv, this);
            MethodScriptCompiler.execute(rootNode, CurrentEnv, done, this);
        }
    } catch (ConfigRuntimeException ex) {
        // We don't know how to handle this really, so let's pass it up the chain.
        throw ex;
    } catch (CancelCommandException e) {
    // p.sendMessage(e.getMessage());
    // The message in the exception is actually empty
    } catch (LoopBreakException e) {
        if (p != null) {
            p.sendMessage("The break() function must be used inside a for() or foreach() loop");
        }
        StreamUtils.GetSystemOut().println("The break() function must be used inside a for() or foreach() loop");
    } catch (LoopContinueException e) {
        if (p != null) {
            p.sendMessage("The continue() function must be used inside a for() or foreach() loop");
        }
        StreamUtils.GetSystemOut().println("The continue() function must be used inside a for() or foreach() loop");
    } catch (FunctionReturnException e) {
        if (myEnv.getEnv(GlobalEnv.class).GetEvent() != null) {
            // Oh, we're running in an event handler. Those know how to catch it too.
            throw e;
        }
        if (p != null) {
            p.sendMessage("The return() function must be used inside a procedure.");
        }
        StreamUtils.GetSystemOut().println("The return() function must be used inside a procedure.");
    } catch (Throwable t) {
        StreamUtils.GetSystemOut().println("An unexpected exception occurred during the execution of a script.");
        t.printStackTrace();
        if (p != null) {
            p.sendMessage("An unexpected exception occurred during the execution of your script." + " Please check the console for more information.");
        }
    }
    if (done != null) {
        done.done(null);
    }
}

Example 2 with CancelCommandException

use of com.laytonsmith.core.exceptions.CancelCommandException in project CommandHelper by EngineHub.

the class Script method eval.

/**
 * Given the parse tree and environment, executes the tree.
 *
 * @param c
 * @param env
 * @return
 * @throws CancelCommandException
 */
public Construct eval(ParseTree c, final Environment env) throws CancelCommandException {
    if (env.getEnv(GlobalEnv.class).IsInterrupted()) {
        // unconditionally.
        throw new CancelCommandException("", Target.UNKNOWN);
    }
    final Construct m = c.getData();
    CurrentEnv = env;
    if (m.getCType() != ConstructType.FUNCTION) {
        if (m.getCType() == ConstructType.VARIABLE) {
            return new CString(m.val(), m.getTarget());
        } else {
            return m;
        }
    }
    StackTraceManager stManager = env.getEnv(GlobalEnv.class).GetStackTraceManager();
    boolean addedRootStackElement = false;
    try {
        // If it's an unknown target, this is not user generated code, and we want to skip adding the element here.
        if (stManager.isStackEmpty() && !m.getTarget().equals(Target.UNKNOWN)) {
            stManager.addStackTraceElement(new ConfigRuntimeException.StackTraceElement("<<main code>>", m.getTarget()));
            addedRootStackElement = true;
        }
        stManager.setCurrentTarget(c.getTarget());
        env.getEnv(GlobalEnv.class).SetScript(this);
        if (m.val().charAt(0) == '_' && m.val().charAt(1) != '_') {
            // Not really a function, so we can't put it in Function.
            Procedure p = getProc(m.val());
            if (p == null) {
                throw new CREInvalidProcedureException("Unknown procedure \"" + m.val() + "\"", m.getTarget());
            }
            Environment newEnv = env;
            try {
                newEnv = env.clone();
            } catch (CloneNotSupportedException e) {
            }
            ProfilePoint pp = env.getEnv(GlobalEnv.class).GetProfiler().start(m.val() + " execution", LogLevel.INFO);
            Construct ret;
            try {
                ret = p.cexecute(c.getChildren(), newEnv, m.getTarget());
            } finally {
                pp.stop();
            }
            return ret;
        }
        final Function f;
        try {
            f = (Function) FunctionList.getFunction(m);
        } catch (ConfigCompileException e) {
            // Turn it into a config runtime exception. This shouldn't ever happen though.
            throw ConfigRuntimeException.CreateUncatchableException("Unable to find function " + m.val(), m.getTarget());
        }
        ArrayList<Construct> args = new ArrayList<>();
        try {
            if (f.isRestricted() && !Static.hasCHPermission(f.getName(), env)) {
                throw new CREInsufficientPermissionException("You do not have permission to use the " + f.getName() + " function.", m.getTarget());
            }
            if (f.useSpecialExec()) {
                ProfilePoint p = null;
                if (f.shouldProfile() && env.getEnv(GlobalEnv.class).GetProfiler() != null && env.getEnv(GlobalEnv.class).GetProfiler().isLoggable(f.profileAt())) {
                    p = env.getEnv(GlobalEnv.class).GetProfiler().start(f.profileMessageS(c.getChildren()), f.profileAt());
                }
                Construct ret;
                try {
                    ret = f.execs(m.getTarget(), env, this, c.getChildren().toArray(new ParseTree[] {}));
                } finally {
                    if (p != null) {
                        p.stop();
                    }
                }
                return ret;
            }
            for (ParseTree c2 : c.getChildren()) {
                args.add(eval(c2, env));
            }
            Object[] a = args.toArray();
            Construct[] ca = new Construct[a.length];
            for (int i = 0; i < a.length; i++) {
                ca[i] = (Construct) a[i];
                // CArray, CBoolean, CDouble, CInt, CNull, CString, CVoid, CEntry, CLabel (only to sconcat).
                if (!(ca[i] instanceof CArray || ca[i] instanceof CBoolean || ca[i] instanceof CDouble || ca[i] instanceof CInt || ca[i] instanceof CNull || ca[i] instanceof CString || ca[i] instanceof CVoid || ca[i] instanceof IVariable || ca[i] instanceof CEntry || ca[i] instanceof CLabel) && (!f.getName().equals("__autoconcat__") && (ca[i] instanceof CLabel))) {
                    throw new CRECastException("Invalid Construct (" + ca[i].getClass() + ") being passed as an argument to a function (" + f.getName() + ")", m.getTarget());
                }
                while (f.preResolveVariables() && ca[i] instanceof IVariable) {
                    IVariable cur = (IVariable) ca[i];
                    ca[i] = env.getEnv(GlobalEnv.class).GetVarList().get(cur.getVariableName(), cur.getTarget()).ival();
                }
            }
            {
                // It takes a moment to generate the toString of some things, so lets not do it
                // if we actually aren't going to profile
                ProfilePoint p = null;
                if (f.shouldProfile() && env.getEnv(GlobalEnv.class).GetProfiler() != null && env.getEnv(GlobalEnv.class).GetProfiler().isLoggable(f.profileAt())) {
                    p = env.getEnv(GlobalEnv.class).GetProfiler().start(f.profileMessage(ca), f.profileAt());
                }
                Construct ret;
                try {
                    ret = f.exec(m.getTarget(), env, ca);
                } finally {
                    if (p != null) {
                        p.stop();
                    }
                }
                return ret;
            }
        // We want to catch and rethrow the ones we know how to catch, and then
        // catch and report anything else.
        } catch (ConfigRuntimeException | ProgramFlowManipulationException e) {
            if (e instanceof AbstractCREException) {
                ((AbstractCREException) e).freezeStackTraceElements(stManager);
            }
            throw e;
        } catch (InvalidEnvironmentException e) {
            if (!e.isDataSet()) {
                e.setData(f.getName());
            }
            throw e;
        } catch (Exception e) {
            String brand = Implementation.GetServerType().getBranding();
            SimpleVersion version = Static.getVersion();
            String culprit = brand;
            outer: for (ExtensionTracker tracker : ExtensionManager.getTrackers().values()) {
                for (FunctionBase b : tracker.getFunctions()) {
                    if (b.getName().equals(f.getName())) {
                        // name instead of the core plugin's name.
                        for (Extension extension : tracker.getExtensions()) {
                            culprit = extension.getName();
                            break outer;
                        }
                    }
                }
            }
            String emsg = TermColors.RED + "Uh oh! You've found an error in " + TermColors.CYAN + culprit + TermColors.RED + ".\n" + "This happened while running your code, so you may be able to find a workaround," + " but is ultimately an issue in " + culprit + ".\n" + "The following code caused the error:\n" + TermColors.WHITE;
            List<String> args2 = new ArrayList<>();
            Map<String, String> vars = new HashMap<>();
            for (Construct cc : args) {
                if (cc instanceof IVariable) {
                    Construct ccc = env.getEnv(GlobalEnv.class).GetVarList().get(((IVariable) cc).getVariableName(), cc.getTarget()).ival();
                    String vval = ccc.val();
                    if (ccc instanceof CString) {
                        vval = ccc.asString().getQuote();
                    }
                    vars.put(((IVariable) cc).getVariableName(), vval);
                }
                if (cc == null) {
                    args2.add("java-null");
                } else if (cc instanceof CString) {
                    args2.add(cc.asString().getQuote());
                } else if (cc instanceof IVariable) {
                    args2.add(((IVariable) cc).getVariableName());
                } else {
                    args2.add(cc.val());
                }
            }
            if (!vars.isEmpty()) {
                emsg += StringUtils.Join(vars, " = ", "\n") + "\n";
            }
            emsg += f.getName() + "(";
            emsg += StringUtils.Join(args2, ", ");
            emsg += ")\n";
            emsg += TermColors.RED + "on or around " + TermColors.YELLOW + m.getTarget().file() + TermColors.WHITE + ":" + TermColors.CYAN + m.getTarget().line() + TermColors.RED + ".\n";
            // Server might not be available in this platform, so let's be sure to ignore those exceptions
            String modVersion;
            try {
                modVersion = StaticLayer.GetConvertor().GetServer().getAPIVersion();
            } catch (Exception ex) {
                modVersion = Implementation.GetServerType().name();
            }
            String extensionData = "";
            for (ExtensionTracker tracker : ExtensionManager.getTrackers().values()) {
                for (Extension extension : tracker.getExtensions()) {
                    try {
                        extensionData += TermColors.CYAN + extension.getName() + TermColors.RED + " (" + TermColors.RESET + extension.getVersion() + TermColors.RED + ")\n";
                    } catch (AbstractMethodError ex) {
                        // This happens with an old style extensions. Just skip it.
                        extensionData += TermColors.CYAN + "Unknown Extension" + TermColors.RED + "\n";
                    }
                }
            }
            if (extensionData.isEmpty()) {
                extensionData = "NONE\n";
            }
            emsg += "Please report this to the developers, and be sure to include the version numbers:\n" + TermColors.CYAN + "Server" + TermColors.RED + " version: " + TermColors.RESET + modVersion + TermColors.RED + ";\n" + TermColors.CYAN + brand + TermColors.RED + " version: " + TermColors.RESET + version + TermColors.RED + ";\n" + "Loaded extensions and versions:\n" + extensionData + "Here's the stacktrace:\n" + TermColors.RESET + Static.GetStacktraceString(e);
            Static.getLogger().log(Level.SEVERE, emsg);
            throw new CancelCommandException(null, Target.UNKNOWN);
        }
    } finally {
        if (addedRootStackElement && stManager.isStackSingle()) {
            stManager.popStackTraceElement();
        }
    }
}

Example 3 with CancelCommandException

use of com.laytonsmith.core.exceptions.CancelCommandException in project CommandHelper by EngineHub.

the class CommandHelperInterpreterListener method execute.

public void execute(String script, final MCPlayer p) throws ConfigCompileException, ConfigCompileGroupException {
    TokenStream stream = MethodScriptCompiler.lex(script, new File("Interpreter"), true);
    ParseTree tree = MethodScriptCompiler.compile(stream);
    interpreterMode.remove(p.getName());
    GlobalEnv gEnv = new GlobalEnv(plugin.executionQueue, plugin.profiler, plugin.persistenceNetwork, CommandHelperFileLocations.getDefault().getConfigDirectory(), plugin.profiles, new TaskManager());
    gEnv.SetDynamicScriptingMode(true);
    CommandHelperEnvironment cEnv = new CommandHelperEnvironment();
    cEnv.SetPlayer(p);
    Environment env = Environment.createEnvironment(gEnv, cEnv);
    try {
        MethodScriptCompiler.registerAutoIncludes(env, null);
        MethodScriptCompiler.execute(tree, env, new MethodScriptComplete() {

            @Override
            public void done(String output) {
                output = output.trim();
                if (output.isEmpty()) {
                    Static.SendMessage(p, ":");
                } else {
                    if (output.startsWith("/")) {
                        // Run the command
                        Static.SendMessage(p, ":" + MCChatColor.YELLOW + output);
                        p.chat(output);
                    } else {
                        // output the results
                        Static.SendMessage(p, ":" + MCChatColor.GREEN + output);
                    }
                }
                interpreterMode.add(p.getName());
            }
        }, null);
    } catch (CancelCommandException e) {
        interpreterMode.add(p.getName());
    } catch (ConfigRuntimeException e) {
        ConfigRuntimeException.HandleUncaughtException(e, env);
        Static.SendMessage(p, MCChatColor.RED + e.toString());
        interpreterMode.add(p.getName());
    } catch (Exception e) {
        Static.SendMessage(p, MCChatColor.RED + e.toString());
        Logger.getLogger(CommandHelperInterpreterListener.class.getName()).log(Level.SEVERE, null, e);
        interpreterMode.add(p.getName());
    }
}

Example 4 with CancelCommandException

use of com.laytonsmith.core.exceptions.CancelCommandException in project CommandHelper by EngineHub.

the class Interpreter method execute.

/**
 * This executes an entire script. The cmdline_prompt_event is first triggered (if used) and if the event is
 * cancelled, nothing happens.
 *
 * @param script
 * @param args
 * @param fromFile
 * @throws ConfigCompileException
 * @throws IOException
 */
public void execute(String script, List<String> args, File fromFile) throws ConfigCompileException, IOException, ConfigCompileGroupException {
    CmdlineEvents.cmdline_prompt_input.CmdlinePromptInput input = new CmdlineEvents.cmdline_prompt_input.CmdlinePromptInput(script, inShellMode);
    EventUtils.TriggerListener(Driver.CMDLINE_PROMPT_INPUT, "cmdline_prompt_input", input);
    if (input.isCancelled()) {
        return;
    }
    ctrlCcount = 0;
    if ("exit".equals(script)) {
        if (inShellMode) {
            inShellMode = false;
            return;
        }
        pl(YELLOW + "Use exit() if you wish to exit.");
        return;
    }
    if ("help".equals(script)) {
        pl(getHelpMsg());
        return;
    }
    if (fromFile == null) {
        fromFile = new File("Interpreter");
    }
    boolean localShellMode = false;
    if (!inShellMode && script.startsWith("$$")) {
        localShellMode = true;
        script = script.substring(2);
    }
    if (inShellMode || localShellMode) {
        // Wrap this in shell_adv
        if (doBuiltin(script)) {
            return;
        }
        List<String> shellArgs = StringUtils.ArgParser(script);
        List<String> escapedArgs = new ArrayList<>();
        for (String arg : shellArgs) {
            escapedArgs.add(new CString(arg, Target.UNKNOWN).getQuote());
        }
        script = "shell_adv(" + "array(" + StringUtils.Join(escapedArgs, ",") + ")," + "array(" + "'stdout':closure(@l){sys_out(@l);}," + "'stderr':closure(@l){sys_err(@l);})" + ");";
    }
    isExecuting = true;
    ProfilePoint compile = env.getEnv(GlobalEnv.class).GetProfiler().start("Compilation", LogLevel.VERBOSE);
    final ParseTree tree;
    try {
        TokenStream stream = MethodScriptCompiler.lex(script, fromFile, true);
        tree = MethodScriptCompiler.compile(stream);
    } finally {
        compile.stop();
    }
    // Environment env = Environment.createEnvironment(this.env.getEnv(GlobalEnv.class));
    final List<Variable> vars = new ArrayList<>();
    if (args != null) {
        // Build the @arguments variable, the $ vars, and $ itself. Note that
        // we have special handling for $0, that is the script name, like bash.
        // However, it doesn't get added to either $ or @arguments, due to the
        // uncommon use of it.
        StringBuilder finalArgument = new StringBuilder();
        CArray arguments = new CArray(Target.UNKNOWN);
        {
            // Set the $0 argument
            Variable v = new Variable("$0", "", Target.UNKNOWN);
            v.setVal(fromFile.toString());
            v.setDefault(fromFile.toString());
            vars.add(v);
        }
        for (int i = 0; i < args.size(); i++) {
            String arg = args.get(i);
            if (i > 0) {
                finalArgument.append(" ");
            }
            Variable v = new Variable("$" + Integer.toString(i + 1), "", Target.UNKNOWN);
            v.setVal(new CString(arg, Target.UNKNOWN));
            v.setDefault(arg);
            vars.add(v);
            finalArgument.append(arg);
            arguments.push(new CString(arg, Target.UNKNOWN), Target.UNKNOWN);
        }
        Variable v = new Variable("$", "", false, true, Target.UNKNOWN);
        v.setVal(new CString(finalArgument.toString(), Target.UNKNOWN));
        v.setDefault(finalArgument.toString());
        vars.add(v);
        env.getEnv(GlobalEnv.class).GetVarList().set(new IVariable(CArray.TYPE, "@arguments", arguments, Target.UNKNOWN));
    }
    try {
        ProfilePoint p = this.env.getEnv(GlobalEnv.class).GetProfiler().start("Interpreter Script", LogLevel.ERROR);
        try {
            final MutableObject<Throwable> wasThrown = new MutableObject<>();
            scriptThread = new Thread(new Runnable() {

                @Override
                public void run() {
                    try {
                        MethodScriptCompiler.execute(tree, env, new MethodScriptComplete() {

                            @Override
                            public void done(String output) {
                                if (System.console() != null && !"".equals(output.trim())) {
                                    StreamUtils.GetSystemOut().println(output);
                                }
                            }
                        }, null, vars);
                    } catch (CancelCommandException e) {
                    // Nothing, though we could have been Ctrl+C cancelled, so we need to reset
                    // the interrupt flag. But we do that unconditionally below, in the finally,
                    // in the other thread.
                    } catch (ConfigRuntimeException e) {
                        ConfigRuntimeException.HandleUncaughtException(e, env);
                        // No need for the full stack trace
                        if (System.console() == null) {
                            System.exit(1);
                        }
                    } catch (NoClassDefFoundError e) {
                        StreamUtils.GetSystemErr().println(RED + Main.getNoClassDefFoundErrorMessage(e) + reset());
                        StreamUtils.GetSystemErr().println("Since you're running from standalone interpreter mode, this is not a fatal error, but one of the functions you just used required" + " an actual backing engine that isn't currently loaded. (It still might fail even if you load the engine though.) You simply won't be" + " able to use that function here.");
                        if (System.console() == null) {
                            System.exit(1);
                        }
                    } catch (InvalidEnvironmentException ex) {
                        StreamUtils.GetSystemErr().println(RED + ex.getMessage() + " " + ex.getData() + "() cannot be used in this context.");
                        if (System.console() == null) {
                            System.exit(1);
                        }
                    } catch (RuntimeException e) {
                        pl(RED + e.toString());
                        e.printStackTrace(StreamUtils.GetSystemErr());
                        if (System.console() == null) {
                            System.exit(1);
                        }
                    }
                }
            }, "MethodScript-Main");
            scriptThread.start();
            try {
                scriptThread.join();
            } catch (InterruptedException ex) {
            // 
            }
        } finally {
            p.stop();
        }
    } finally {
        env.getEnv(GlobalEnv.class).SetInterrupt(false);
        isExecuting = false;
    }
}

Example 5 with CancelCommandException

use of com.laytonsmith.core.exceptions.CancelCommandException in project CommandHelper by EngineHub.

the class CIClosure method execute.

@Override
public void execute(Construct... values) throws ConfigRuntimeException, ProgramFlowManipulationException, FunctionReturnException, CancelCommandException {
    if (node == null) {
        return;
    }
    StackTraceManager stManager = env.getEnv(GlobalEnv.class).GetStackTraceManager();
    stManager.addStackTraceElement(new ConfigRuntimeException.StackTraceElement("<<iclosure>>", getTarget()));
    try {
        Environment environment;
        synchronized (this) {
            boolean prev = env.getEnv(GlobalEnv.class).getCloneVars();
            env.getEnv(GlobalEnv.class).setCloneVars(false);
            environment = env.clone();
            env.getEnv(GlobalEnv.class).setCloneVars(prev);
        }
        environment.getEnv(GlobalEnv.class).setCloneVars(true);
        if (values != null) {
            for (int i = 0; i < names.length; i++) {
                String name = names[i];
                Construct value;
                try {
                    value = values[i];
                } catch (Exception e) {
                    value = defaults[i].clone();
                }
                environment.getEnv(GlobalEnv.class).GetVarList().set(new IVariable(types[i], name, value, getTarget()));
            }
        }
        boolean hasArgumentsParam = false;
        for (String pName : this.names) {
            if (pName.equals("@arguments")) {
                hasArgumentsParam = true;
                break;
            }
        }
        if (!hasArgumentsParam) {
            CArray arguments = new CArray(node.getData().getTarget());
            if (values != null) {
                for (Construct value : values) {
                    arguments.push(value, node.getData().getTarget());
                }
            }
            environment.getEnv(GlobalEnv.class).GetVarList().set(new IVariable(CArray.TYPE, "@arguments", arguments, node.getData().getTarget()));
        }
        ParseTree newNode = new ParseTree(new CFunction("g", getTarget()), node.getFileOptions());
        List<ParseTree> children = new ArrayList<ParseTree>();
        children.add(node);
        newNode.setChildren(children);
        try {
            MethodScriptCompiler.execute(newNode, environment, null, environment.getEnv(GlobalEnv.class).GetScript());
        } catch (LoopManipulationException e) {
            // Not normal, but pop anyways
            stManager.popStackTraceElement();
            // This shouldn't ever happen.
            LoopManipulationException lme = ((LoopManipulationException) e);
            Target t = lme.getTarget();
            ConfigRuntimeException.HandleUncaughtException(ConfigRuntimeException.CreateUncatchableException("A " + lme.getName() + "() bubbled up to the top of" + " a closure, which is unexpected behavior.", t), environment);
        } catch (FunctionReturnException ex) {
            // Normal. Pop element
            stManager.popStackTraceElement();
            // Check the return type of the closure to see if it matches the defined type
            Construct ret = ex.getReturn();
            if (!InstanceofUtil.isInstanceof(ret, returnType)) {
                throw new CRECastException("Expected closure to return a value of type " + returnType.val() + " but a value of type " + ret.typeof() + " was returned instead", ret.getTarget());
            }
            // Now rethrow it
            throw ex;
        } catch (CancelCommandException e) {
            stManager.popStackTraceElement();
        // die()
        } catch (ConfigRuntimeException ex) {
            if (ex instanceof AbstractCREException) {
                ((AbstractCREException) ex).freezeStackTraceElements(stManager);
            }
            throw ex;
        } catch (Throwable t) {
            stManager.popStackTraceElement();
            throw t;
        }
        // If we got here, then there was no return type. This is fine, but only for returnType void or auto.
        if (!(returnType.equals(Auto.TYPE) || returnType.equals(CVoid.TYPE))) {
            throw new CRECastException("Expecting closure to return a value of type " + returnType.val() + "," + " but no value was returned.", node.getTarget());
        }
    } catch (CloneNotSupportedException ex) {
        Logger.getLogger(CClosure.class.getName()).log(Level.SEVERE, null, ex);
    }
}