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// Copyright 2011 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 --harmony-scoping
// The functions used for testing backtraces. They are at the top to make the
// testing of source line/column easier.
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug;
var test_name;
var listener_delegate;
var listener_called;
var exception;
var begin_test_count = 0;
var end_test_count = 0;
var break_count = 0;
// Debug event listener which delegates.
function listener(event, exec_state, event_data, data) {
try {
if (event == Debug.DebugEvent.Break) {
break_count++;
listener_called = true;
listener_delegate(exec_state);
}
} catch (e) {
exception = e;
}
}
// Add the debug event listener.
Debug.setListener(listener);
// Initialize for a new test.
function BeginTest(name) {
test_name = name;
listener_delegate = null;
listener_called = false;
exception = null;
begin_test_count++;
}
// Check result of a test.
function EndTest() {
assertTrue(listener_called, "listerner not called for " + test_name);
assertNull(exception, test_name);
end_test_count++;
}
// Check that the scope chain contains the expected types of scopes.
function CheckScopeChain(scopes, exec_state) {
assertEquals(scopes.length, exec_state.frame().scopeCount());
for (var i = 0; i < scopes.length; i++) {
var scope = exec_state.frame().scope(i);
assertTrue(scope.isScope());
assertEquals(scopes[i], scope.scopeType());
// Check the global object when hitting the global scope.
if (scopes[i] == debug.ScopeType.Global) {
// Objects don't have same class (one is "global", other is "Object",
// so just check the properties directly.
assertPropertiesEqual(this, scope.scopeObject().value());
}
}
// Get the debug command processor.
var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
// Send a scopes request and check the result.
var json;
var request_json = '{"seq":0,"type":"request","command":"scopes"}';
var response_json = dcp.processDebugJSONRequest(request_json);
var response = JSON.parse(response_json);
assertEquals(scopes.length, response.body.scopes.length);
for (var i = 0; i < scopes.length; i++) {
assertEquals(i, response.body.scopes[i].index);
assertEquals(scopes[i], response.body.scopes[i].type);
if (scopes[i] == debug.ScopeType.Local ||
scopes[i] == debug.ScopeType.Closure) {
assertTrue(response.body.scopes[i].object.ref < 0);
} else {
assertTrue(response.body.scopes[i].object.ref >= 0);
}
var found = false;
for (var j = 0; j < response.refs.length && !found; j++) {
found = response.refs[j].handle == response.body.scopes[i].object.ref;
}
assertTrue(found, "Scope object " + response.body.scopes[i].object.ref + " not found");
}
}
// Check that the content of the scope is as expected. For functions just check
// that there is a function.
function CheckScopeContent(content, number, exec_state) {
var scope = exec_state.frame().scope(number);
var count = 0;
for (var p in content) {
var property_mirror = scope.scopeObject().property(p);
if (property_mirror.isUndefined()) {
print('property ' + p + ' not found in scope');
}
assertFalse(property_mirror.isUndefined(), 'property ' + p + ' not found in scope');
if (typeof(content[p]) === 'function') {
assertTrue(property_mirror.value().isFunction());
} else {
assertEquals(content[p], property_mirror.value().value(), 'property ' + p + ' has unexpected value');
}
count++;
}
// 'arguments' and might be exposed in the local and closure scope. Just
// ignore this.
var scope_size = scope.scopeObject().properties().length;
if (!scope.scopeObject().property('arguments').isUndefined()) {
scope_size--;
}
// Also ignore synthetic variable from catch block.
if (!scope.scopeObject().property('.catch-var').isUndefined()) {
scope_size--;
}
// Skip property with empty name.
if (!scope.scopeObject().property('').isUndefined()) {
scope_size--;
}
// Also ignore synthetic variable from block scopes.
if (!scope.scopeObject().property('.block').isUndefined()) {
scope_size--;
}
if (count != scope_size) {
print('Names found in scope:');
var names = scope.scopeObject().propertyNames();
for (var i = 0; i < names.length; i++) {
print(names[i]);
}
}
assertEquals(count, scope_size);
// Get the debug command processor.
var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
// Send a scope request for information on a single scope and check the
// result.
var request_json = '{"seq":0,"type":"request","command":"scope","arguments":{"number":';
request_json += scope.scopeIndex();
request_json += '}}';
var response_json = dcp.processDebugJSONRequest(request_json);
var response = JSON.parse(response_json);
assertEquals(scope.scopeType(), response.body.type);
assertEquals(number, response.body.index);
if (scope.scopeType() == debug.ScopeType.Local ||
scope.scopeType() == debug.ScopeType.Closure) {
assertTrue(response.body.object.ref < 0);
} else {
assertTrue(response.body.object.ref >= 0);
}
var found = false;
for (var i = 0; i < response.refs.length && !found; i++) {
found = response.refs[i].handle == response.body.object.ref;
}
assertTrue(found, "Scope object " + response.body.object.ref + " not found");
}
// Simple closure formed by returning an inner function referering to an outer
// block local variable and an outer function's parameter. Due to VM
// optimizations parts of the actual closure is missing from the debugger
// information.
BeginTest("Closure 1");
function closure_1(a) {
var x = 2;
let y = 3;
if (true) {
let z = 4;
function f() {
debugger;
return a + x + y + z;
};
return f;
}
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Block,
debug.ScopeType.Closure,
debug.ScopeType.Global], exec_state);
CheckScopeContent({}, 0, exec_state);
CheckScopeContent({z:4}, 1, exec_state);
CheckScopeContent({a:1,x:2,y:3}, 2, exec_state);
};
closure_1(1)();
EndTest();
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