Support stepping out for recursive functions

test/mjsunit/debug-stepout-to-builtin.js

Index: test/mjsunit/debug-stepout-to-builtin.js
===================================================================
--- test/mjsunit/debug-stepout-to-builtin.js	(revision 0)
+++ test/mjsunit/debug-stepout-to-builtin.js	(revision 0)
@@ -0,0 +1,84 @@
+// Copyright 2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --expose-debug-as debug
+
+// Get the Debug object exposed from the debug context global object.
+Debug = debug.Debug
+
+var exception = null;
+var state = 1;
+var expected_source_line_text = null;
+var expected_function_name = null;
+
+// Simple debug event handler which first time will cause 'step out' action
+// and than check that execution is paused inside function
+// expected_function_name.
+function listener(event, exec_state, event_data, data) {
+  try {
+    if (event == Debug.DebugEvent.Break) {
+      if (state == 1) {
+        exec_state.prepareStep(Debug.StepAction.StepOut, 2);
+        state = 2;
+      } else if (state == 2) {
+        assertEquals(expected_function_name, event_data.func().name());
+        assertEquals(expected_source_line_text,
+                     event_data.sourceLineText());
+        state = 3;
+      }
+    }
+  } catch(e) {
+    exception = e;
+  }
+};
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+var obj = {key:10};
+
+function replacer(key, value) {
+  if (key == 'key') {
+    debugger;
+  }
+  return value;
+}
+
+// Test step into function call from a function without local variables.
+function testStepOutToBuiltIn() {
+  expected_function_name = 'testStepOutToBuiltIn';
+  expected_source_line_text = '}  // expected line';
+  JSON.stringify(obj, replacer);
+}  // expected line
+
+state = 1;
+testStepOutToBuiltIn();
+assertNull(exception);
+assertEquals(3, state);
+
+// Get rid of the debug event listener.
+Debug.setListener(null);