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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.
// MODULE
// Flags: --allow-natives-syntax --noanalyze-environment-liveness
// These tests are copied from mjsunit/debug-scopes.js and adapted for modules.
var 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, "listener not called for " + test_name);
assertNull(exception, test_name + " / " + exception);
end_test_count++;
}
// Check that two scope are the same.
function assertScopeMirrorEquals(scope1, scope2) {
assertEquals(scope1.scopeType(), scope2.scopeType());
assertEquals(scope1.frameIndex(), scope2.frameIndex());
assertEquals(scope1.scopeIndex(), scope2.scopeIndex());
assertPropertiesEqual(scope1.scopeObject().value(),
scope2.scopeObject().value());
}
function CheckFastAllScopes(scopes, exec_state)
{
var fast_all_scopes = exec_state.frame().allScopes(true);
var length = fast_all_scopes.length;
assertTrue(scopes.length >= length);
for (var i = 0; i < scopes.length && i < length; i++) {
var scope = fast_all_scopes[length - i - 1];
assertEquals(scopes[scopes.length - i - 1], scope.scopeType());
}
}
// Check that the scope chain contains the expected types of scopes.
function CheckScopeChain(scopes, exec_state) {
var all_scopes = exec_state.frame().allScopes();
assertEquals(scopes.length, exec_state.frame().scopeCount());
assertEquals(scopes.length, all_scopes.length,
"FrameMirror.allScopes length");
for (var i = 0; i < scopes.length; i++) {
var scope = exec_state.frame().scope(i);
assertEquals(scopes[i], scope.scopeType());
assertScopeMirrorEquals(all_scopes[i], scope);
}
CheckFastAllScopes(scopes, exec_state);
}
// Check that the scope chain contains the expected names of scopes.
function CheckScopeChainNames(names, exec_state) {
var all_scopes = exec_state.frame().allScopes();
assertEquals(names.length, all_scopes.length, "FrameMirror.allScopes length");
for (var i = 0; i < names.length; i++) {
var scope = exec_state.frame().scope(i);
assertEquals(names[i], scope.details().name())
}
}
// Check that the scope contains at least minimum_content. For functions just
// check that there is a function.
function CheckScopeContent(minimum_content, number, exec_state) {
var scope = exec_state.frame().scope(number);
var minimum_count = 0;
for (var p in minimum_content) {
var property_mirror = scope.scopeObject().property(p);
assertFalse(property_mirror.isUndefined(),
'property ' + p + ' not found in scope');
assertEquals(minimum_content[p], property_mirror.value().value(),
'property ' + p + ' has unexpected value');
minimum_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--;
}
// Ditto for 'this'.
if (!scope.scopeObject().property('this').isUndefined()) {
scope_size--;
}
// Temporary variables introduced by the parser have not been materialized.
assertTrue(scope.scopeObject().property('').isUndefined());
if (scope_size < minimum_count) {
print('Names found in scope:');
var names = scope.scopeObject().propertyNames();
for (var i = 0; i < names.length; i++) {
print(names[i]);
}
}
assertTrue(scope_size >= minimum_count);
}
// Check that the scopes have positions as expected.
function CheckScopeChainPositions(positions, exec_state) {
var all_scopes = exec_state.frame().allScopes();
assertTrue(positions.length <= all_scopes.length,
"FrameMirror.allScopes length");
for (var i = 0; i < positions.length; i++) {
var scope = exec_state.frame().scope(i);
var position = positions[i];
if (!position)
continue;
print(
`Checking position.start = ${position.start}, .end = ${position.end}`);
assertEquals(position.start, scope.details().startPosition())
assertEquals(position.end, scope.details().endPosition())
}
}
// Simple empty local scope.
BeginTest("Local 1");
function local_1() {
debugger;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({}, 0, exec_state);
};
local_1();
EndTest();
// Local scope with a parameter.
BeginTest("Local 2");
function local_2(a) {
debugger;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1}, 0, exec_state);
};
local_2(1);
EndTest();
// Local scope with a parameter and a local variable.
BeginTest("Local 3");
function local_3(a) {
var x = 3;
debugger;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1,x:3}, 0, exec_state);
};
local_3(1);
EndTest();
// Local scope with parameters and local variables.
BeginTest("Local 4");
function local_4(a, b) {
var x = 3;
var y = 4;
debugger;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1,b:2,x:3,y:4}, 0, exec_state);
};
local_4(1, 2);
EndTest();
// Empty local scope with use of eval.
BeginTest("Local 5");
function local_5() {
eval('');
debugger;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({}, 0, exec_state);
};
local_5();
EndTest();
// Local introducing local variable using eval.
BeginTest("Local 6");
function local_6() {
eval('var i = 5');
debugger;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({}, 0, exec_state);
};
local_6();
EndTest();
// Local scope with parameters and local variables.
BeginTest("Local 7");
function local_7(a, b) {
var x = 3;
var y = 4;
eval('var i = 5');
eval('var j = 6');
debugger;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1,b:2,x:3,y:4}, 0, exec_state);
};
local_7(1, 2);
EndTest();
// Simple closure formed by returning an inner function referering the outer
// functions arguments.
BeginTest("Closure 1");
function closure_1(a) {
function f() {
debugger;
return a;
};
return f;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1}, 1, exec_state);
CheckScopeChainNames(["f", "closure_1", undefined, undefined, undefined], exec_state)
};
closure_1(1)();
EndTest();
// Simple closure formed by returning an inner function referering the outer
// functions arguments. Due to VM optimizations parts of the actual closure is
// missing from the debugger information.
BeginTest("Closure 2");
function closure_2(a, b) {
var x = a + 2;
var y = b + 2;
function f() {
debugger;
return a + x;
};
return f;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1,x:3}, 1, exec_state);
CheckScopeChainNames(["f", "closure_2", undefined, undefined, undefined],
exec_state)
};
closure_2(1, 2)();
EndTest();
// Simple closure formed by returning an inner function referering the outer
// functions arguments. Using all arguments and locals from the outer function
// in the inner function makes these part of the debugger information on the
// closure.
BeginTest("Closure 3");
function closure_3(a, b) {
var x = a + 2;
var y = b + 2;
function f() {
debugger;
return a + b + x + y;
};
return f;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1,b:2,x:3,y:4}, 1, exec_state);
CheckScopeChainNames(["f", "closure_3", undefined, undefined, undefined],
exec_state)
};
closure_3(1, 2)();
EndTest();
// Simple closure formed by returning an inner function referering the outer
// functions arguments. Using all arguments and locals from the outer function
// in the inner function makes these part of the debugger information on the
// closure. Use the inner function as well...
BeginTest("Closure 4");
function closure_4(a, b) {
var x = a + 2;
var y = b + 2;
function f() {
debugger;
if (f) {
return a + b + x + y;
}
};
return f;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1,b:2,x:3,y:4,f:undefined}, 1, exec_state);
CheckScopeChainNames(["f", "closure_4", undefined, undefined, undefined],
exec_state)
};
closure_4(1, 2)();
EndTest();
// Simple closure formed by returning an inner function referering the outer
// functions arguments. In the presence of eval all arguments and locals
// (including the inner function itself) from the outer function becomes part of
// the debugger infformation on the closure.
BeginTest("Closure 5");
function closure_5(a, b) {
var x = 3;
var y = 4;
function f() {
eval('');
debugger;
return 1;
};
return f;
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1,b:2,x:3,y:4,f:undefined}, 1, exec_state);
CheckScopeChainNames(["f", "closure_5", undefined, undefined, undefined],
exec_state)
};
closure_5(1, 2)();
EndTest();
// Two closures. Due to optimizations only the parts actually used are provided
// through the debugger information.
BeginTest("Closure 6");
let some_global;
function closure_6(a, b) {
function f(a, b) {
var x = 3;
var y = 4;
return function() {
var x = 3;
var y = 4;
debugger;
some_global = a;
return f;
};
}
return f(a, b);
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Closure,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({a:1}, 1, exec_state);
CheckScopeContent({f:undefined}, 2, exec_state);
CheckScopeChainNames(
[undefined, "f", "closure_6", undefined, undefined, undefined],
exec_state);
};
closure_6(1, 2)();
EndTest();
// Two closures. In the presence of eval all information is provided as the
// compiler cannot determine which parts are used.
BeginTest("Closure 7");
function closure_7(a, b) {
var x = 3;
var y = 4;
eval('var i = 5');
eval('var j = 6');
function f(a, b) {
var x = 3;
var y = 4;
eval('var i = 5');
eval('var j = 6');
return function() {
debugger;
some_global = a;
return f;
};
}
return f(a, b);
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Closure,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({}, 0, exec_state);
CheckScopeContent({a:1,b:2,x:3,y:4}, 1, exec_state);
CheckScopeContent({a:1,b:2,x:3,y:4,f:undefined}, 2, exec_state);
CheckScopeChainNames(
[undefined, "f", "closure_7", undefined, undefined, undefined],
exec_state);
};
closure_7(1, 2)();
EndTest();
// Closure that may be optimized out.
BeginTest("Closure 8");
function closure_8() {
(function inner(x) {
debugger;
})(2);
}
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({x: 2}, 0, exec_state);
CheckScopeChainNames(["inner", undefined, undefined, undefined], exec_state);
};
closure_8();
EndTest();
BeginTest("Closure 9");
let closure_9 = Function(' \
eval("var y = 1;"); \
eval("var z = 1;"); \
(function inner(x) { \
y++; \
z++; \
debugger; \
})(2); \
')
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Closure,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeChainNames(["inner", undefined, undefined, undefined], exec_state);
};
closure_9();
EndTest();
// Test global scope.
BeginTest("Global");
listener_delegate = function(exec_state) {
CheckScopeChain(
[debug.ScopeType.Module, debug.ScopeType.Script, debug.ScopeType.Global],
exec_state);
CheckScopeChainNames([undefined, undefined, undefined], exec_state);
};
debugger;
EndTest();
BeginTest("Catch block 1");
function catch_block_1() {
try {
throw 'Exception';
} catch (e) {
debugger;
}
};
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Catch,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({e:'Exception'}, 0, exec_state);
CheckScopeChainNames(
["catch_block_1", "catch_block_1", undefined, undefined, undefined],
exec_state);
};
catch_block_1();
EndTest();
BeginTest("Catch block 3");
function catch_block_3() {
eval("var y = 78;");
try {
throw 'Exception';
} catch (e) {
debugger;
}
};
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Catch,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({e:'Exception'}, 0, exec_state);
CheckScopeContent({}, 1, exec_state);
CheckScopeChainNames(
["catch_block_3", "catch_block_3", undefined, undefined, undefined],
exec_state);
};
catch_block_3();
EndTest();
// Test catch in global scope.
BeginTest("Catch block 5");
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Catch,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({e:'Exception'}, 0, exec_state);
CheckScopeChainNames([undefined, undefined, undefined, undefined],
exec_state);
};
try {
throw 'Exception';
} catch (e) {
debugger;
}
EndTest();
// Closure inside catch in global code.
BeginTest("Catch block 6");
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Catch,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({x: 2}, 0, exec_state);
CheckScopeContent({e:'Exception'}, 1, exec_state);
CheckScopeChainNames([undefined, undefined, undefined, undefined, undefined],
exec_state);
};
try {
throw 'Exception';
} catch (e) {
(function(x) {
debugger;
})(2);
}
EndTest();
// Catch block in function that is marked for optimization while being executed.
BeginTest("Catch block 7");
function catch_block_7() {
%OptimizeFunctionOnNextCall(catch_block_7);
try {
throw 'Exception';
} catch (e) {
debugger;
}
};
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Catch,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({e:'Exception'}, 0, exec_state);
CheckScopeChainNames(
["catch_block_7", "catch_block_7", undefined, undefined, undefined],
exec_state);
};
catch_block_7();
EndTest();
BeginTest("Classes and methods 1");
listener_delegate = function(exec_state) {
"use strict"
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeContent({}, 1, exec_state);
CheckScopeChainNames(["m", undefined, undefined, undefined], exec_state);
};
(function() {
"use strict";
class C1 {
m() {
debugger;
}
}
new C1().m();
})();
EndTest();
BeginTest("Scope positions");
var code1 = "function f() { \n" +
" var a = 1; \n" +
" function b() { \n" +
" debugger; \n" +
" return a + 1; \n" +
" } \n" +
" b(); \n" +
"} \n" +
"f(); \n";
listener_delegate = function(exec_state) {
CheckScopeChainPositions([{start: 58, end: 118}, {start: 10, end: 162}],
exec_state);
}
eval(code1);
EndTest();
BeginTest("Scope positions in for statement");
var code3 = "function for_statement() { \n" +
" for (let i = 0; i < 1; i++) { \n" +
" debugger; \n" +
" } \n" +
"} \n" +
"for_statement(); \n";
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Block,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeChainPositions([{start: 42, end: 111}, {start: 22, end: 145}],
exec_state);
}
eval(code3);
EndTest();
BeginTest("Scope positions in for statement with lexical block");
var code4 = "function for_statement() { \n" +
" for (let i = 0; i < 1; i++) { \n" +
" let j; \n" +
" debugger; \n" +
" } \n" +
"} \n" +
"for_statement(); \n";
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Block,
debug.ScopeType.Block,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeChainPositions([{start: 66, end: 147},
{start: 42, end: 147},
{start: 22, end: 181}], exec_state);
}
eval(code4);
EndTest();
BeginTest("Scope positions in lexical for each statement");
var code5 = "function for_each_statement() { \n" +
" for (let i of [0]) { \n" +
" debugger; \n" +
" } \n" +
"} \n" +
"for_each_statement(); \n";
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Block,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeChainPositions([{start: 55, end: 111}, {start: 27, end: 145}],
exec_state);
}
eval(code5);
EndTest();
BeginTest("Scope positions in lexical for each statement with lexical block");
var code6 = "function for_each_statement() { \n" +
" for (let i of [0]) { \n" +
" let j; \n" +
" debugger; \n" +
" } \n" +
"} \n" +
"for_each_statement(); \n";
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Block,
debug.ScopeType.Block,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeChainPositions([{start: 57, end: 147},
{start: 55, end: 147},
{start: 27, end: 181}], exec_state);
}
eval(code6);
EndTest();
BeginTest("Scope positions in non-lexical for each statement");
var code7 = "function for_each_statement() { \n" +
" var i; \n" +
" for (i of [0]) { \n" +
" debugger; \n" +
" } \n" +
"} \n" +
"for_each_statement(); \n";
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeChainPositions([{start: 27, end: 181}], exec_state);
}
eval(code7);
EndTest();
BeginTest(
"Scope positions in non-lexical for each statement with lexical block");
var code8 = "function for_each_statement() { \n" +
" var i; \n" +
" for (i of [0]) { \n" +
" let j; \n" +
" debugger; \n" +
" } \n" +
"} \n" +
"for_each_statement(); \n";
listener_delegate = function(exec_state) {
CheckScopeChain([debug.ScopeType.Block,
debug.ScopeType.Local,
debug.ScopeType.Module,
debug.ScopeType.Script,
debug.ScopeType.Global], exec_state);
CheckScopeChainPositions([{start: 89, end: 183}, {start: 27, end: 217}],
exec_state);
}
eval(code8);
EndTest();
assertEquals(begin_test_count, break_count,
'one or more tests did not enter the debugger');
assertEquals(begin_test_count, end_test_count,
'one or more tests did not have its result checked');