debug-function-scopes.js 5.48 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
// Copyright 2012 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.


var Debug = debug.Debug;

const ScopeType = debug.ScopeType;

let exception = null;
let listenerDelegate = null;

const expected_break_count = 5;
let break_count = 0;

Debug.setListener(function(event, exec_state, event_data, data) {
  if (event != Debug.DebugEvent.Break) return;
  try {
    break_count++;
    listenerDelegate(exec_state);
  } catch (e) {
    exception = e;
    print(e, e.stack);
  }
});

function CheckScope(scope_frame, scope_expectations, expected_scope_type) {
  assertEquals(expected_scope_type, scope_frame.scopeType());

  var scope_object = scope_frame.scopeObject().value();

  for (var name in scope_expectations) {
    var actual = scope_object[name];
    var expected = scope_expectations[name];
    assertEquals(expected, actual);
  }
}

// ---

listenerDelegate = function(exec_state) {
  const frame = exec_state.frame(0);

  assertEquals(7, frame.scopeCount());

  CheckScope(frame.scope(0), {}, ScopeType.Local);
  CheckScope(frame.scope(1), { a: 4, b: 5 }, ScopeType.Closure);
  CheckScope(frame.scope(2), { w: 5, v: "Capybara" }, ScopeType.With);
  CheckScope(frame.scope(3), { z: 22 }, ScopeType.Closure);
  CheckScope(frame.scope(4), { x: 5 }, ScopeType.Closure);
  CheckScope(frame.scope(5), {}, ScopeType.Script);
  CheckScope(frame.scope(6), {}, ScopeType.Global);
};

(function F1(x) {
  function F2(y) {
    var z = x + y;
    with ({w: 5, v: "Capybara"}) {
      var F3 = function(a, b) {
        function F4(p) {
          debugger;
          return p + a + b + z + w + v.length;
        }
        return F4;
      }
      return F3(4, 5);
    }
  }
  return F2(17);
})(5)();

// ---

listenerDelegate = function(exec_state) {
  const frame = exec_state.frame(0);

  assertEquals(3, frame.scopeCount());

  CheckScope(frame.scope(0), {}, ScopeType.Local);
  CheckScope(frame.scope(1), {}, ScopeType.Script);
  CheckScope(frame.scope(2), {}, ScopeType.Global);
};

(function() { debugger; return 5; })();

// ---

listenerDelegate = function(exec_state) {
  const frame = exec_state.frame(0);

  assertEquals(5, frame.scopeCount());

  CheckScope(frame.scope(0), {}, ScopeType.Local);
  CheckScope(frame.scope(1), { visible2: 20 }, ScopeType.Closure);
  CheckScope(frame.scope(2), { visible1: 10 }, ScopeType.Closure);
  CheckScope(frame.scope(3), {}, ScopeType.Script);
  CheckScope(frame.scope(4), {}, ScopeType.Global);
};

(function F1(invisible_parameter) {
  var invisible1 = 1;
  var visible1 = 10;
  return (function F2() {
    var invisible2 = 2;
    return (function F3() {
      var visible2 = 20;
      return (function () { debugger; return visible1 + visible2; });
    })();
  })();
})(5)();

// ---

listenerDelegate = function(exec_state) {
  const frame = exec_state.frame(0);

  assertEquals(5, frame.scopeCount());

  CheckScope(frame.scope(0), {}, ScopeType.Local);
  CheckScope(frame.scope(1), { e2: "I'm error 2" }, ScopeType.Catch);
  CheckScope(frame.scope(2), { e1: "I'm error 1" }, ScopeType.Catch);
  CheckScope(frame.scope(3), {}, ScopeType.Script);
  CheckScope(frame.scope(4), {}, ScopeType.Global);
};

(function One() {
  try {
    throw "I'm error 1";
  } catch (e1) {
    try {
      throw "I'm error 2";
    } catch (e2) {
      return function GetError() {
        debugger;
        return e1 + e2;
      };
    }
  }
})()();

// ---

listenerDelegate = function(exec_state) {
  const frame = exec_state.frame(0);

  assertEquals(5, frame.scopeCount());

  CheckScope(frame.scope(0), {}, ScopeType.Local);
  CheckScope(frame.scope(1), { p4: 20, p6: 22 }, ScopeType.Closure);
  CheckScope(frame.scope(2), { p1: 1 }, ScopeType.Closure);
  CheckScope(frame.scope(3), {}, ScopeType.Script);
  CheckScope(frame.scope(4), {}, ScopeType.Global);
};

(function Raz(p1, p2) {
  var p3 = p1 + p2;
  return (function() {
    var p4 = 20;
    var p5 = 21;
    var p6 = 22;
    return eval("(function(p7){ debugger; return p1 + p4 + p6 + p7})");
  })();
})(1,2)();

// ---

assertNull(exception);
assertEquals(expected_break_count, break_count);