v8/test/debugger/debug/debug-evaluate-locals-optimized.js

// Copyright 2012 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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// Flags: --expose-gc

Debug = debug.Debug

var listenerComplete = false;
var exceptionThrown = false;

var testingConstructCall = false;

var expected = [
  { locals: {i: 0, x0: 3, y0: 4, a0: 1, b0: 2},
    args: { names: ["i", "x0", "y0"], values: [0, 3, 4] } },
  { locals: {i: 1, x1: 5, y1: 6, a1: 3, b1: 4},
    args: { names: ["i", "x1", "y1"], values: [1, 5, 6] } },
  { locals: {i: 2, a2: 5, b2: 6},
    args: { names: ["i"], values: [2] } },
  { locals: {i: 3, x3: 9, y3: 10, z3: undefined, a3: 7, b3: 8},
    args: { names: ["i", "x3", "y3", "z3"], values: [3, 9, 10, undefined] } },
  { locals: {i: 4, x4: 11, y4: 12, a4: 9, b4: 10},
    args: { names: ["i", "x4", "y4"], values: [4, 11, 12] } }
];

function listener(event, exec_state, event_data, data) {
  try {
    if (event == Debug.DebugEvent.Break)
    {
      assertEquals(6, exec_state.frameCount());

      for (var i = 0; i < exec_state.frameCount(); i++) {
        var frame = exec_state.frame(i);
        if (i < exec_state.frameCount() - 1) {
          var expected_args = expected[i].args;
          var expected_locals = expected[i].locals;

          // All frames except the bottom one have expected locals.
          var locals = {};
          for (var j = 0; j < frame.localCount(); j++) {
            locals[frame.localName(j)] = frame.localValue(j).value();
          }
          assertPropertiesEqual(expected_locals, locals);

          // All frames except the bottom one have three scopes.
          assertEquals(3, frame.scopeCount());
          assertEquals(debug.ScopeType.Local, frame.scope(0).scopeType());
          assertEquals(debug.ScopeType.Script, frame.scope(1).scopeType());
          assertEquals(debug.ScopeType.Global, frame.scope(2).scopeType());

          Object.keys(expected_locals).forEach(function (name) {
            assertEquals(expected_locals[name],
                         frame.scope(0).scopeObject().value()[name]);
          });

          for (var j = 0; j < expected_args.names.length; j++) {
            var arg_name = expected_args.names[j];
            var arg_value = expected_args.values[j];
            assertEquals(arg_value,
                         frame.scope(0).scopeObject().value()[arg_name]);
          }

          // Evaluate in the inlined frame.
          Object.keys(expected_locals).forEach(function (name) {
            assertEquals(expected_locals[name], frame.evaluate(name).value());
          });

          for (var j = 0; j < expected_args.names.length; j++) {
            var arg_name = expected_args.names[j];
            var arg_value = expected_args.values[j];
            assertEquals(arg_value, frame.evaluate(arg_name).value());
            assertEquals(arg_value, frame.evaluate('arguments['+j+']').value());
          }
        } else {
          // The bottom frame only have the script scope and the global scope.
          assertEquals(2, frame.scopeCount());
          assertEquals(debug.ScopeType.Script, frame.scope(0).scopeType());
          assertEquals(debug.ScopeType.Global, frame.scope(1).scopeType());
        }

        // Check the frame function.
        switch (i) {
          case 0: assertEquals("h", frame.func().name()); break;
          case 1: assertEquals("g3", frame.func().name()); break;
          case 2: assertEquals("g2", frame.func().name()); break;
          case 3: assertEquals("g1", frame.func().name()); break;
          case 4: assertEquals("f", frame.func().name()); break;
          case 5: break;
          default: assertUnreachable();
        }
      }

      // Indicate that all was processed.
      listenerComplete = true;
    }
  } catch (e) {
    exceptionThrown = true;
  };
};

%PrepareFunctionForOptimization(f);
for (var i = 0; i < 4; i++) f(expected.length - 1, 11, 12);
%OptimizeFunctionOnNextCall(f);
f(expected.length - 1, 11, 12);

// Add the debug event listener.
Debug.setListener(listener);

function h(i, x0, y0) {
  var a0 = expected[i].locals.a0;
  var b0 = expected[i].locals.b0;
  debugger;  // Breakpoint.
  return a0 + b0;
}

function g3(i, x1, y1) {
  var a1 = expected[i].locals.a1;
  var b1 = expected[i].locals.b1;
  h(i - 1, a1, b1);
  return a1 + b1;
}

function g2(i) {
  var a2 = expected[i].locals.a2;
  var b2 = expected[i].locals.b2;
  g3(i - 1, a2, b2);
  return a2 + b2;
}

function g1(i, x3, y3, z3) {
  var a3 = expected[i].locals.a3;
  var b3 = expected[i].locals.b3;
  new g2(i - 1, a3, b3);
  return a3 + b3;
}

function f(i, x4, y4) {
  var a4 = expected[i].locals.a4;
  var b4 = expected[i].locals.b4;
  g1(i - 1, a4, b4);
  return a4 + b4;
}

// Test calling f normally and as a constructor.
f(expected.length - 1, 11, 12);
f(expected.length - 1, 11, 12, 0);
testingConstructCall = true;
new f(expected.length - 1, 11, 12);
new f(expected.length - 1, 11, 12, 0);

// Make sure that the debug event listener was invoked.
assertFalse(exceptionThrown, "exception in listener");
assertTrue(listenerComplete);

// Throw away type information for next run.
gc();

Debug.setListener(null);