Introduce additional context to evaluate operations

test/mjsunit/debug-evaluate-with-context.js

+// Copyright 2008 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 evaluate_callback;
+
+function listener(event, exec_state, event_data, data) {
+  try {
+    var context = { what_is_capybara: "a fish" };
+    var context2 = { what_is_capybara: "a fish", what_is_parrot: "a beard" };
+
+    // Try in frame's scope.
+    var local_expression =
+        "(what_is_capybara ? what_is_capybara : 'a beast') + '/' + what_is_parrot";
+    var result = evaluate_callback.in_top_frame(exec_state, local_expression, context);
+    assertEquals('a fish/a bird', result);
+
+    // Try in frame's scope with overrididen local variables.
+    var result = evaluate_callback.in_top_frame(exec_state, local_expression, context2);
+    assertEquals('a fish/a beard', result);
+
+    // Try in frame's scope, without context.
+    var local_expression2 = "what_is_parrot";
+    var result = evaluate_callback.in_top_frame(exec_state, local_expression2, void 0);
+    assertEquals('a bird', result);
+
+    // Try in global additional scope.
+    var global_expression = "what_is_capybara ? what_is_capybara : 'a beast'";
+    var result = evaluate_callback.globally(exec_state, global_expression, context);
+    assertEquals('a fish', result);
+
+    // Try in global scope with overridden global variables.
+    var context_with_undefined = { undefined: 'kitten' };
+    var global_expression2 = "'cat' + '/' + undefined";
+    var result = evaluate_callback.globally(exec_state, global_expression2, context_with_undefined);
+    assertEquals('cat/kitten', result);
+
+    // Try in global scope with no overridden global variables.
+    var result = evaluate_callback.globally(exec_state, global_expression2, void 0);
+    assertEquals('cat/undefined', result);
+
+    // Try in global scope without additional context.
+    var global_expression3 = "'cat' + '/' + 'dog'";
+    var result = evaluate_callback.globally(exec_state, global_expression3, void 0);
+    assertEquals('cat/dog', result);
+
+    listenerComplete = true;
+  } catch (e) {
+    exception = e
+  };
+};
+
+
+function f() {
+  var what_is_parrot = "a bird";
+  debugger;
+};
+
+function runF() {
+  exception = false;
+  listenerComplete = false;
+
+  Debug.setListener(listener);
+
+  // Add the debug event listener.
+  Debug.setListener(listener);
+
+  f();
+
+  assertFalse(exception, "exception in listener")
+  assertTrue(listenerComplete);
+}
+
+evaluate_callback = {
+  in_top_frame: function(exec_state, expression, additional_context) {
+    return exec_state.frame(0).evaluate(expression, void 0, additional_context).value();
+  },
+  globally: function(exec_state, expression, additional_context) {
+    return exec_state.evaluateGlobal(expression, void 0, additional_context).value();
+  },
+};
+
+
+runF();
+
+// Now try all the same, but via debug protocol.
+
+function evaluateViaProtocol(exec_state, expression, additional_context, frame_argument_adder) {
+  var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
+  request_json = {"seq":17,"type":"request","command":"evaluate", arguments: { "expression": expression } };
+  frame_argument_adder(request_json.arguments);
+  if (additional_context) {
+    var context_json = {}
+    for (var key in additional_context) {
+      context_json[key] = Debug.MakeMirror(additional_context[key]).handle();
+    }
+    request_json.arguments.additional_context = context_json;
+  }
+  var request = JSON.stringify(request_json);
+  var response_json = dcp.processDebugJSONRequest(request);
+  var response = JSON.parse(response_json);
+
+  assertTrue(response.success);
+  var str_result = response.body.value;
+  return str_result;
+}
+
+evaluate_callback = {
+  in_top_frame: function(exec_state, expression, additional_context) {
+    return evaluateViaProtocol(exec_state, expression, additional_context, function(args) { args.frame = 0; });
+  },
+  globally: function(exec_state, expression, additional_context) {
+    return evaluateViaProtocol(exec_state, expression, additional_context, function(args) { args.global = true; });
+  },
+};
+
+runF();