v8/test/mjsunit/debug-evaluate-locals-optimized-double.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-debug-as debug --allow-natives-syntax
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug

var listenerComplete = false;
var exception = false;

var testingConstructCall = false;

var input = [
  {a: 1, b: 2},
  {a: 3, b: 4},
  {a: 5, b: 6},
  {a: 7, b: 8},
  {a: 9, b: 10}
];

var expected = [
  { locals: {a0: 1.01, b0: 2.02}, args: { names: ["i", "x0", "y0"], values: [0, 3.03, 4.04] } },
  { locals: {a1: 3.03, b1: 4.04}, args: { names: ["i", "x1", "y1"], values: [1, 5.05, 6.06] } },
  { locals: {a2: 5.05, b2: 6.06}, args: { names: ["i"], values: [2] } },
  { locals: {a3: 7.07, b3: 8.08}, args: { names: ["i", "x3", "y3", "z3"],
                                          values: [3, 9.09, 10.10, undefined] }
  },
  { locals: {a4: 9.09, b4: 10.10}, args: { names: ["i", "x4", "y4"], values: [4, 11.11, 12.12] } }
];

function arraySum(arr) {
  return arr.reduce(function (a, b) { return a + b; }, 0);
}

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 expected arguments.
          for (var j = 0; j < expected_args.names.length; j++) {
            assertEquals(expected_args.names[j], frame.argumentName(j));
            assertEquals(expected_args.values[j], frame.argumentValue(j).value());
          }

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

          var expected_args_sum = arraySum(expected_args.values);
          var expected_locals_sum =
              arraySum(Object.keys(expected_locals).
                       map(function (k) { return expected_locals[k]; }));

          assertEquals(expected_locals_sum + expected_args_sum,
                       frame.evaluate(Object.keys(expected_locals).join('+') + ' + ' +
                                      expected_args.names.join('+')).value());

          var arguments_sum = expected_args.names.map(function(_, idx) {
            return "arguments[" + idx + "]";
          }).join('+');
          assertEquals(expected_args_sum,
                       frame.evaluate(arguments_sum).value());
        } else {
          // The bottom frame only have the global scope.
          assertEquals(1, frame.scopeCount());
          assertEquals(debug.ScopeType.Global, frame.scope(0).scopeType());
        }

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

        // Check for construct call.
        assertEquals(testingConstructCall && i == 4, frame.isConstructCall());

        // When function f is optimized (1 means YES, see runtime.cc) we
        // expect an optimized frame for f with g1, g2 and g3 inlined.
        if (%GetOptimizationStatus(f) == 1) {
          if (i == 1 || i == 2 || i == 3) {
            assertTrue(frame.isOptimizedFrame());
            assertTrue(frame.isInlinedFrame());
            assertEquals(4 - i, frame.inlinedFrameIndex());
          } else if (i == 4) {
            assertTrue(frame.isOptimizedFrame());
            assertFalse(frame.isInlinedFrame());
          } else {
            assertFalse(frame.isOptimizedFrame());
            assertFalse(frame.isInlinedFrame());
          }
        }
      }

      // Indicate that all was processed.
      listenerComplete = true;
    }
  } catch (e) {
    exception = e.toString() + e.stack;
  };
};

for (var i = 0; i < 4; i++) f(input.length - 1, 11.11, 12.12);
%OptimizeFunctionOnNextCall(f);
f(input.length - 1, 11.11, 12.12);

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

function h(i, x0, y0) {
  var a0 = input[i].a;
  var b0 = input[i].b;
  a0 = a0 + a0 / 100;
  b0 = b0 + b0 / 100;
  debugger;  // Breakpoint.
};

function g3(i, x1, y1) {
  var a1 = input[i].a;
  var b1 = input[i].b;
  a1 = a1 + a1 / 100;
  b1 = b1 + b1 / 100;
  h(i - 1, a1, b1);
  return a1+b1;
};

function g2(i) {
  var a2 = input[i].a;
  var b2 = input[i].b;
  a2 = a2 + a2 / 100;
  b2 = b2 + b2 / 100;
  g3(i - 1, a2, b2);
};

function g1(i, x3, y3, z3) {
  var a3 = input[i].a;
  var b3 = input[i].b;
  a3 = a3 + a3 / 100;
  b3 = b3 + b3 / 100;
  g2(i - 1, a3, b3);
};

function f(i, x4, y4) {
  var a4 = input[i].a;
  var b4 = input[i].b;
  a4 = a4 + a4 / 100;
  b4 = b4 + b4 / 100;
  g1(i - 1, a4, b4);
};

// Test calling f normally and as a constructor.
f(input.length - 1, 11.11, 12.12);
f(input.length - 1, 11.11, 12.12, "");
testingConstructCall = true;
new f(input.length - 1, 11.11, 12.12);
new f(input.length - 1, 11.11, 12.12, "");

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

Debug.setListener(null);