[debug-wrapper] Conditional breaks, locals, evaluate, scopes

test/mjsunit/debug-evaluate-nested-let.js

-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --expose-debug-as debug --allow-natives-syntax
-
-Debug = debug.Debug
-
-var exception = null;
-
-function f() {
-  let a = 0;
-  function g() {
-    let a = 1;
-    {
-      let a = 2;
-      debugger;  // Breakpoint.
-      if (a !== 3) {
-        // We cannot change stack locals in optimized frames.
-        assertEquals(2, a);
-        assertOptimized(g);
-      }
-    }
-    assertEquals(1, a);
-  }
-  g.call(1);
-  if (a !== 4) {
-    // We cannot change stack locals in optimized frames.
-    assertEquals(0, a);
-    assertOptimized(f);
-  }
-}
-
-
-function listener(event, exec_state, event_data, data) {
-  if (event != Debug.DebugEvent.Break) return;
-  try {
-    exec_state.frame(0).evaluate("a = 3");
-    exec_state.frame(1).evaluate("a = 4");
-    assertThrows(() => exec_state.frame(0).evaluate("this = 2"));
-  } catch (e) {
-    exception = e;
-    print("Caught something. " + e + " " + e.stack);
-  };
-};
-
-Debug.setListener(listener);
-
-f();
-
-Debug.setListener(null);
-assertNull(exception);