Print exception hint in the debugger client when an exception is thrown. (#1841)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/debugger/do_exception.cmd

@@ -1,2 +1,5 @@
 c
+c
+c
+c
 quit

tests/debugger/do_exception.expected

@@ -2,5 +2,18 @@ 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)
+Exception hint: TypeError
+Stopped around tests/debugger/do_exception.js:19 (in foo() at line:17, col:1)
+(jerry-debugger) c
+Exception throw detected (to disable automatic stop type exception 0)
+Exception hint: ReferenceError
+Stopped at tests/debugger/do_exception.js:24 (in foo() at line:17, col:1)
+(jerry-debugger) c
+Exception throw detected (to disable automatic stop type exception 0)
+Exception hint: 456
+Stopped at tests/debugger/do_exception.js:29 (in foo() at line:17, col:1)
+(jerry-debugger) c
+Exception throw detected (to disable automatic stop type exception 0)
+Exception hint: RangeError: Bad range!
+Stopped around tests/debugger/do_exception.js:34 (in foo() at line:17, col:1)
 (jerry-debugger) quit

tests/debugger/do_exception.js

@@ -15,11 +15,25 @@
 print("exception handler configuration test")
 
 function foo() {
-    try {
-        b = a / c;
-    } catch (e) {
-        print(e); // pass exception object to err handler
-    }
+  try {
+    undefined();
+  } catch (e) {
+  }
+
+  try {
+    xxx();
+  } catch (e) {
+  }
+
+  try {
+    throw 456;
+  } catch (e) {
+  }
+
+  try {
+    throw new RangeError("Bad range!");
+  } catch (e) {
+  }
 }
 
 foo()