Add Stop at exception feature to the debugger (#1693)

JerryScript-DCO-1.0-Signed-off-by: Levente Orban orbanl@inf.u-szeged.hu

tests/debugger/do_exception.cmd

@@ -0,0 +1,2 @@
+c
+quit

tests/debugger/do_exception.expected

@@ -0,0 +1,6 @@
+Connecting to: localhost:5001
+Stopped at tests/debugger/do_exception.js:15
+(jerry-debugger) c
+Exception throw detected (to disable automatic stop type exception 0)
+Stopped at tests/debugger/do_exception.js:19 (in foo() at line:17, col:1)
+(jerry-debugger) quit

tests/debugger/do_exception.js

@@ -0,0 +1,25 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+print("exception handler configuration test")
+
+function foo() {
+    try {
+        b = a / c;
+    } catch (e) {
+        print(e); // pass exception object to err handler
+    }
+}
+
+foo()

tests/debugger/do_help.expected

@@ -4,7 +4,7 @@ Stopped at tests/debugger/do_help.js:15
 
 Documented commands (type help <topic>):
 ========================================
-b          break  c         delete  e     help  n     quit  src 
-backtrace  bt     continue  dump    eval  list  next  s     step
+b          break  c         delete  e     exception  list  next  s    step
+backtrace  bt     continue  dump    eval  help       n     quit  src
 
 (jerry-debugger) quit