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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --no-always-opt
// Test that the (strict) eval scope is visible to the debugger.
var Debug = debug.Debug;
var exception = null;
var delegate = null;
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
delegate(exec_state);
} catch (e) {
exception = e;
}
}
Debug.setListener(listener);
// Current function is the top-level eval.
// We can access stack- and context-allocated values in the eval-scope.
delegate = function(exec_state) {
assertEquals([ debug.ScopeType.Eval,
debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(0).allScopes().map(s => s.scopeType()));
var scope = exec_state.frame(0).scope(0);
assertEquals(1, scope.scopeObject().property("a").value().value());
assertEquals(1, exec_state.frame(0).evaluate("a").value());
scope.setVariableValue("a", 2);
assertEquals(2, exec_state.frame(0).evaluate("a++").value());
}
eval("'use strict'; \n" +
"var a = 1; \n" +
"debugger; \n" +
"assertEquals(3, a);\n");
eval("'use strict'; \n" +
"var a = 1; \n" +
"(x=>a); \n" + // Force context-allocation.
"debugger; \n" +
"assertEquals(3, a);\n");
// Current function is an inner function.
// We cannot access stack-allocated values in the eval-scope.
delegate = function(exec_state) {
assertEquals([ debug.ScopeType.Local,
debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(0).allScopes().map(s => s.scopeType()));
assertEquals([ debug.ScopeType.Eval,
debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(1).allScopes().map(s => s.scopeType()));
var scope = exec_state.frame(0).scope(0);
assertThrows(() => exec_state.frame(0).evaluate("a"), ReferenceError);
assertTrue(scope.scopeObject().property("a").isUndefined());
}
eval("'use strict'; \n" +
"var a = 1; \n" +
"(() => {debugger})()\n");
// Current function is an escaped inner function.
delegate = function(exec_state) {
assertEquals([ debug.ScopeType.Local,
debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(0).allScopes().map(s => s.scopeType()));
assertEquals([ debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(1).allScopes().map(s => s.scopeType()));
var scope = exec_state.frame(0).scope(0);
assertThrows(() => exec_state.frame(0).evaluate("a"), ReferenceError);
assertTrue(scope.scopeObject().property("a").isUndefined());
}
var f = eval("'use strict'; \n" +
"var a = 1; \n" +
"() => {debugger}\n");
f();
// Current function is an inner function.
// We can access context-allocated values in the eval-scope.
delegate = function(exec_state) {
assertEquals([ debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(0).allScopes().map(s => s.scopeType()));
assertEquals([ debug.ScopeType.Eval,
debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(1).allScopes().map(s => s.scopeType()));
var scope = exec_state.frame(1).scope(0);
assertEquals(1, scope.scopeObject().property("a").value().value());
assertEquals(1, exec_state.frame(1).evaluate("a").value());
assertEquals(1, exec_state.frame(0).evaluate("a").value());
scope.setVariableValue("a", 2);
assertEquals(2, exec_state.frame(0).evaluate("a++").value());
assertEquals(3, exec_state.frame(1).evaluate("a++").value());
}
eval("'use strict'; \n" +
"var a = 1; \n" +
"(() => { a; \n" + // Force context-allocation.
" debugger; \n" +
" assertEquals(4, a);\n" +
" })(); \n"
);
// Current function is an escaped inner function.
// We can access context-allocated values in the eval-scope.
delegate = function(exec_state) {
assertEquals([ debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(0).allScopes().map(s => s.scopeType()));
assertEquals([ debug.ScopeType.Script,
debug.ScopeType.Global ],
exec_state.frame(1).allScopes().map(s => s.scopeType()));
var scope = exec_state.frame(0).scope(1);
assertEquals(1, scope.scopeObject().property("a").value().value());
assertEquals(1, exec_state.frame(0).evaluate("a").value());
scope.setVariableValue("a", 2);
assertEquals(2, exec_state.frame(0).evaluate("a++").value());
}
var g = eval("'use strict'; \n" +
"var a = 1; \n" +
"() => { a; \n" +
" debugger; \n" +
" assertEquals(3, a);\n" +
" } \n");
g();
Debug.setListener(null);
assertNull(exception);
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