From 112af1df833b11b2aa2005d3b91c978c888dcda1 Mon Sep 17 00:00:00 2001
From: Victor <annimon119@gmail.com>
Date: Thu, 7 Sep 2017 21:40:44 +0300
Subject: [PATCH] Log runtime errors

---
 .../main/java/com/annimon/hotarufx/Main.java   |  7 ++-----
 .../hotarufx/exceptions/Exceptions.java        | 18 ++++++++++++++++++
 .../ui/controller/EditorController.java        | 12 ++++++++++--
 3 files changed, 30 insertions(+), 7 deletions(-)
 create mode 100644 app/src/main/java/com/annimon/hotarufx/exceptions/Exceptions.java

diff --git a/app/src/main/java/com/annimon/hotarufx/Main.java b/app/src/main/java/com/annimon/hotarufx/Main.java
index d92071e..1fdb57f 100644
--- a/app/src/main/java/com/annimon/hotarufx/Main.java
+++ b/app/src/main/java/com/annimon/hotarufx/Main.java
@@ -1,10 +1,9 @@
 package com.annimon.hotarufx;
 
+import com.annimon.hotarufx.exceptions.Exceptions;
 import com.annimon.hotarufx.ui.control.ClickableHyperLink;
 import com.annimon.hotarufx.ui.controller.EditorController;
 import java.io.IOException;
-import java.io.PrintWriter;
-import java.io.StringWriter;
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Scene;
@@ -33,9 +32,7 @@ public class Main extends Application {
             controller.setPrimaryStage(primaryStage);
             primaryStage.setScene(scene);
         } catch (IOException ex) {
-            val sw = new StringWriter();
-            ex.printStackTrace(new PrintWriter(sw));
-            val text = new TextArea(sw.toString());
+            val text = new TextArea(Exceptions.stackTraceToString(ex));
             text.setEditable(false);
             primaryStage.setScene(new Scene(text));
         }
diff --git a/app/src/main/java/com/annimon/hotarufx/exceptions/Exceptions.java b/app/src/main/java/com/annimon/hotarufx/exceptions/Exceptions.java
new file mode 100644
index 0000000..78fab8e
--- /dev/null
+++ b/app/src/main/java/com/annimon/hotarufx/exceptions/Exceptions.java
@@ -0,0 +1,18 @@
+package com.annimon.hotarufx.exceptions;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import lombok.val;
+
+public final class Exceptions {
+
+    private Exceptions() {
+        throw new IllegalStateException("Oh là là!");
+    }
+
+    public static String stackTraceToString(Throwable throwable) {
+        val sw = new StringWriter();
+        throwable.printStackTrace(new PrintWriter(sw));
+        return sw.toString();
+    }
+}
diff --git a/app/src/main/java/com/annimon/hotarufx/ui/controller/EditorController.java b/app/src/main/java/com/annimon/hotarufx/ui/controller/EditorController.java
index 2876c7d..efc65e2 100644
--- a/app/src/main/java/com/annimon/hotarufx/ui/controller/EditorController.java
+++ b/app/src/main/java/com/annimon/hotarufx/ui/controller/EditorController.java
@@ -4,6 +4,8 @@ import com.annimon.hotarufx.Main;
 import com.annimon.hotarufx.bundles.BundleLoader;
 import com.annimon.hotarufx.bundles.CompositionBundle;
 import com.annimon.hotarufx.bundles.NodesBundle;
+import com.annimon.hotarufx.exceptions.Exceptions;
+import com.annimon.hotarufx.exceptions.HotaruRuntimeException;
 import com.annimon.hotarufx.io.DocumentListener;
 import com.annimon.hotarufx.io.DocumentManager;
 import com.annimon.hotarufx.io.FileManager;
@@ -144,7 +146,13 @@ public class EditorController implements Initializable, DocumentListener {
             logPane.setExpanded(true);
             return;
         }
-        program.accept(new InterpreterVisitor(), context);
+        try {
+            program.accept(new InterpreterVisitor(), context);
+        } catch (RuntimeException e) {
+            logError(Exceptions.stackTraceToString(e));
+            logPane.setExpanded(true);
+            return;
+        }
 
         val stage = new Stage();
         val composition = context.composition();
@@ -258,7 +266,7 @@ public class EditorController implements Initializable, DocumentListener {
                 "  .add(300 ms, 200)\n" +
                 "  .add(1 sec, 50)\n" +
                 "\n" +
-                "render(A)");
+                "render(A)\n");
     }
 
     private String readProgram(String path) {