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// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --expose-debug-as debug --harmony-scoping
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// The functions used for testing backtraces. They are at the top to make the
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// testing of source line/column easier.
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// Get the Debug object exposed from the debug context global object.
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Debug = debug.Debug;
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var test_name;
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var listener_delegate;
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var listener_called;
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var exception;
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var begin_test_count = 0;
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var end_test_count = 0;
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var break_count = 0;
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// Debug event listener which delegates.
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function listener(event, exec_state, event_data, data) {
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try {
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if (event == Debug.DebugEvent.Break) {
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break_count++;
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listener_called = true;
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listener_delegate(exec_state);
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}
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} catch (e) {
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exception = e;
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}
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}
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// Add the debug event listener.
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Debug.setListener(listener);
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// Initialize for a new test.
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function BeginTest(name) {
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test_name = name;
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listener_delegate = null;
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listener_called = false;
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exception = null;
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begin_test_count++;
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}
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// Check result of a test.
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function EndTest() {
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assertTrue(listener_called, "listerner not called for " + test_name);
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assertNull(exception, test_name);
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end_test_count++;
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}
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// Check that the scope chain contains the expected types of scopes.
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function CheckScopeChain(scopes, exec_state) {
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assertEquals(scopes.length, exec_state.frame().scopeCount());
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for (var i = 0; i < scopes.length; i++) {
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var scope = exec_state.frame().scope(i);
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assertTrue(scope.isScope());
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assertEquals(scopes[i], scope.scopeType());
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// Check the global object when hitting the global scope.
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if (scopes[i] == debug.ScopeType.Global) {
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// Objects don't have same class (one is "global", other is "Object",
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// so just check the properties directly.
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assertPropertiesEqual(this, scope.scopeObject().value());
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}
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}
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// Get the debug command processor.
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var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
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// Send a scopes request and check the result.
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var json;
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var request_json = '{"seq":0,"type":"request","command":"scopes"}';
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var response_json = dcp.processDebugJSONRequest(request_json);
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var response = JSON.parse(response_json);
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assertEquals(scopes.length, response.body.scopes.length);
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for (var i = 0; i < scopes.length; i++) {
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assertEquals(i, response.body.scopes[i].index);
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assertEquals(scopes[i], response.body.scopes[i].type);
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if (scopes[i] == debug.ScopeType.Local ||
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scopes[i] == debug.ScopeType.Closure) {
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assertTrue(response.body.scopes[i].object.ref < 0);
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} else {
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assertTrue(response.body.scopes[i].object.ref >= 0);
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}
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var found = false;
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for (var j = 0; j < response.refs.length && !found; j++) {
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found = response.refs[j].handle == response.body.scopes[i].object.ref;
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}
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assertTrue(found, "Scope object " + response.body.scopes[i].object.ref + " not found");
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}
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}
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// Check that the content of the scope is as expected. For functions just check
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// that there is a function.
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function CheckScopeContent(content, number, exec_state) {
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var scope = exec_state.frame().scope(number);
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var count = 0;
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for (var p in content) {
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var property_mirror = scope.scopeObject().property(p);
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if (property_mirror.isUndefined()) {
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print('property ' + p + ' not found in scope');
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}
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assertFalse(property_mirror.isUndefined(), 'property ' + p + ' not found in scope');
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if (typeof(content[p]) === 'function') {
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assertTrue(property_mirror.value().isFunction());
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} else {
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assertEquals(content[p], property_mirror.value().value(), 'property ' + p + ' has unexpected value');
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}
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count++;
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}
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// 'arguments' and might be exposed in the local and closure scope. Just
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// ignore this.
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var scope_size = scope.scopeObject().properties().length;
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if (!scope.scopeObject().property('arguments').isUndefined()) {
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scope_size--;
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}
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// Also ignore synthetic variable from catch block.
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if (!scope.scopeObject().property('.catch-var').isUndefined()) {
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scope_size--;
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}
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// Skip property with empty name.
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if (!scope.scopeObject().property('').isUndefined()) {
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scope_size--;
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}
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// Also ignore synthetic variable from block scopes.
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if (!scope.scopeObject().property('.block').isUndefined()) {
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scope_size--;
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}
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if (count != scope_size) {
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print('Names found in scope:');
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var names = scope.scopeObject().propertyNames();
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for (var i = 0; i < names.length; i++) {
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print(names[i]);
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}
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}
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assertEquals(count, scope_size);
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// Get the debug command processor.
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var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
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// Send a scope request for information on a single scope and check the
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// result.
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var request_json = '{"seq":0,"type":"request","command":"scope","arguments":{"number":';
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request_json += scope.scopeIndex();
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request_json += '}}';
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var response_json = dcp.processDebugJSONRequest(request_json);
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var response = JSON.parse(response_json);
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assertEquals(scope.scopeType(), response.body.type);
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assertEquals(number, response.body.index);
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if (scope.scopeType() == debug.ScopeType.Local ||
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scope.scopeType() == debug.ScopeType.Closure) {
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assertTrue(response.body.object.ref < 0);
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} else {
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assertTrue(response.body.object.ref >= 0);
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}
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var found = false;
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for (var i = 0; i < response.refs.length && !found; i++) {
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found = response.refs[i].handle == response.body.object.ref;
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}
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assertTrue(found, "Scope object " + response.body.object.ref + " not found");
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}
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// Simple closure formed by returning an inner function referering to an outer
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// block local variable and an outer function's parameter. Due to VM
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// optimizations parts of the actual closure is missing from the debugger
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// information.
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BeginTest("Closure 1");
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function closure_1(a) {
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var x = 2;
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let y = 3;
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if (true) {
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let z = 4;
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function f() {
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debugger;
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return a + x + y + z;
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};
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return f;
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}
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}
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listener_delegate = function(exec_state) {
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CheckScopeChain([debug.ScopeType.Local,
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debug.ScopeType.Block,
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debug.ScopeType.Closure,
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debug.ScopeType.Global], exec_state);
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CheckScopeContent({}, 0, exec_state);
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CheckScopeContent({z:4}, 1, exec_state);
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CheckScopeContent({a:1,x:2,y:3}, 2, exec_state);
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};
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closure_1(1)();
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EndTest();
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