v8/test/mjsunit/debug-evaluate-locals.js
yangguo 297daf6c37 [debugger] allow debug-evaluate to change stack and context values.
R=bmeurer@chromium.org, cbruni@chromium.org, ulan@chromium.org
BUG=chromium:124206,chromium:569811
LOG=N

Review URL: https://codereview.chromium.org/1834633003

Cr-Commit-Position: refs/heads/master@{#35145}
2016-03-31 06:00:21 +00:00

150 lines
4.7 KiB
JavaScript

// 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
listenerComplete = false;
exception = false;
function h() {
var a = 1;
var b = 2;
var eval = 5; // Overriding eval should not break anything.
debugger; // Breakpoint.
return a;
}
function checkFrame0(frame) {
// Frame 0 (h) has normal variables a and b.
var count = frame.localCount();
assertEquals(3, count);
for (var i = 0; i < count; ++i) {
var name = frame.localName(i);
var value = frame.localValue(i).value();
if (name == 'a') {
assertEquals(1, value);
} else if (name !='eval') {
assertEquals('b', name);
assertEquals(2, value);
}
}
}
function g() {
var a = 3;
eval("var b = 4;");
return h() + a;
}
function checkFrame1(frame) {
// Frame 1 (g) has normal variable a (and arguments).
var count = frame.localCount();
assertEquals(2, count);
for (var i = 0; i < count; ++i) {
var name = frame.localName(i);
var value = frame.localValue(i).value();
if (name == 'a') {
assertEquals(3, value);
} else {
assertEquals('arguments', name);
}
}
}
function f() {
var a = 5;
var b = 0;
with ({b:6}) {
return g();
}
}
function checkFrame2(frame) {
// Frame 2 (f) has normal variables a and b.
var count = frame.localCount();
assertEquals(2, count);
for (var i = 0; i < count; ++i) {
var name = frame.localName(i);
var value = frame.localValue(i).value();
if (name == 'a') {
assertEquals(5, value);
} else {
assertEquals('b', name);
assertEquals(0, value);
}
}
}
function listener(event, exec_state, event_data, data) {
try {
if (event == Debug.DebugEvent.Break)
{
checkFrame0(exec_state.frame(0));
checkFrame1(exec_state.frame(1));
checkFrame2(exec_state.frame(2));
assertEquals(1, exec_state.frame(0).evaluate('a').value());
assertEquals(2, exec_state.frame(0).evaluate('b').value());
assertEquals(5, exec_state.frame(0).evaluate('eval').value());
assertEquals(3, exec_state.frame(1).evaluate('a').value());
assertEquals(4, exec_state.frame(1).evaluate('b').value());
assertEquals("function",
typeof exec_state.frame(1).evaluate('eval').value());
assertEquals(5, exec_state.frame(2).evaluate('a').value());
assertEquals(6, exec_state.frame(2).evaluate('b').value());
assertEquals("function",
typeof exec_state.frame(2).evaluate('eval').value());
assertEquals("foo",
exec_state.frame(0).evaluate('a = "foo"').value());
assertEquals("bar",
exec_state.frame(1).evaluate('a = "bar"').value());
// Indicate that all was processed.
listenerComplete = true;
}
} catch (e) {
exception = e;
print("Caught something. " + e + " " + e.stack);
};
};
// Add the debug event listener.
Debug.setListener(listener);
var f_result = f();
assertEquals("foobar", f_result);
// Make sure that the debug event listener was invoked.
assertFalse(exception, "exception in listener")
assertTrue(listenerComplete);