Use closure conversion in new dart2js backend.

tests/language/for_variable_capture_test.dart

Index: tests/language/for_variable_capture_test.dart
diff --git a/tests/language/for_variable_capture_test.dart b/tests/language/for_variable_capture_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d59fb8f06f4124749efd0f59ed9b29b641bee655
--- /dev/null
+++ b/tests/language/for_variable_capture_test.dart
@@ -0,0 +1,284 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+
+run(callback) => callback();
+
+
+initializer() {
+	var closure;
+	for (var i=0, fn = () => i; i < 3; i++) {
+		i += 1;
+		closure = fn;
+	}
+	Expect.equals(1, closure());
+}
+
+condition() {
+	var closures = [];
+	check(callback) {
+		closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0; check(() => ++i) < 8; ++i) {
+		values.add(i);
+	}
+	Expect.listEquals([1, 3, 5, 7], values);
+	Expect.listEquals([2, 4, 6, 8, 10], closures.map(run).toList());
+}
+
+body() {
+	var closures = [];
+	for (var i=0, j=0; i<3; i++) {
+		j++;
+		closures.add(() => i);
+		closures.add(() => j);
+	}
+	Expect.listEquals([0, 1, 1, 2, 2, 3], closures.map(run).toList());
+}
+
+update() {
+	var closures = [];
+	check(callback) {
+		closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0; i < 4; check(() => ++i)) {
+		values.add(i);
+	}
+	Expect.listEquals([0, 1, 2, 3], values);
+	Expect.listEquals([2, 3, 4, 5], closures.map(run).toList());
+}
+
+initializer_condition() {
+	var values = [];
+	for (var i=0, fn = () => i; run(() => ++i) < 3; ) {
+		values.add(i);
+		values.add(fn());
+	}
+	Expect.listEquals([1, 1, 2, 1], values);
+}
+
+initializer_update() {
+	var update_closures = [];
+	update(callback) {
+		update_closures.add(callback);
+		return callback();
+	}
+	var init_closure;
+	for (var i=0, fn = () => i; i < 4; update(() => ++i)) {
+		init_closure = fn;
+		if (i == 0) {
+			++i; // Mutate copy of 'i' from first iteration.
+		}
+	}
+	Expect.equals(1, init_closure());
+	Expect.listEquals([3, 4, 5], update_closures.map(run).toList());
+	Expect.equals(1, init_closure());
+}
+
+initializer_body() {
+	var closures = [];
+	for (var i=0, fn = () => i; i < 3; i++) {
+		closures.add(() => i);
+		closures.add(fn);
+		fn = () => i;
+	}
+	Expect.listEquals([0, 0, 1, 0, 2, 1], closures.map(run).toList());
+}
+
+condition_update() {
+	var cond_closures = [];
+	check(callback) {
+		cond_closures.add(callback);
+		return callback();
+	}
+	var update_closures = [];
+	update(callback) {
+		update_closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0; check(() => i) < 4; update(() => ++i)) {
+		values.add(i);
+	}
+	Expect.listEquals([0, 1, 2, 3], values);
+
+	Expect.listEquals([0, 1, 2, 3, 4], cond_closures.map(run).toList());
+	Expect.listEquals(   [2, 3, 4, 5], update_closures.map(run).toList());
+	Expect.listEquals([0, 2, 3, 4, 5], cond_closures.map(run).toList());
+}
+
+condition_body() {
+	var cond_closures = [];
+	check(callback) {
+		cond_closures.add(callback);
+		return callback();
+	}
+	var body_closures = [];
+	do_body(callback) {
+		body_closures.add(callback);
+		return callback();
+	}
+	for (var i=0; check(() => i) < 4; ++i) {
+		do_body(() => i);
+	}
+	Expect.listEquals([0, 1, 2, 3, 4], cond_closures.map(run).toList());
+	Expect.listEquals([0, 1, 2, 3],    body_closures.map(run).toList());
+}
+
+initializer_condition_update() {
+	var init;
+	var cond_closures = [];
+	check(callback) {
+		cond_closures.add(callback);
+		return callback();
+	}
+	var update_closures = [];
+	update(callback) {
+		update_closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0, fn = () => i; check(() => ++i) < 8; update(() => ++i)) {
+		init = fn;
+		values.add(i);
+	}
+	Expect.listEquals([1, 3, 5, 7], values);
+	Expect.equals(1, init());
+
+	Expect.listEquals([2, 4, 6, 8, 10], cond_closures.map(run).toList());
+	Expect.listEquals(   [5, 7, 9, 11], update_closures.map(run).toList());
+}
+
+initializer_condition_body() {
+	var init;
+	var cond_closures = [];
+	check(callback) {
+		cond_closures.add(callback);
+		return callback();
+	}
+	var body_closures = [];
+	do_body(callback) {
+		body_closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0, fn = () => i; check(() => ++i) < 8; ) {
+		init = fn;
+		do_body(() => ++i);
+		values.add(i);
+	}
+	Expect.listEquals([2, 4, 6, 8], values);
+	Expect.equals(2, init());
+
+	Expect.listEquals([3, 5, 7,  9, 10], cond_closures.map(run).toList());
+	Expect.listEquals([4, 6, 8, 10],     body_closures.map(run).toList());
+}
+
+initializer_update_body() {
+	var init;
+	var update_closures = [];
+	update(callback) {
+		update_closures.add(callback);
+		return callback();
+	}
+	var body_closures = [];
+	do_body(callback) {
+		body_closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0, fn = () => i; i < 8; update(() => ++i)) {
+		init = fn;
+		do_body(() => ++i);
+		values.add(i);
+	}
+	Expect.listEquals([1, 3, 5, 7], values);
+	Expect.equals(1, init());
+
+	Expect.listEquals(   [4, 6, 8, 9], update_closures.map(run).toList());
+	Expect.listEquals([2, 5, 7, 9],    body_closures.map(run).toList());
+}
+
+condition_update_body() {
+	var cond_closures = [];
+	check(callback) {
+		cond_closures.add(callback);
+		return callback();
+	}
+	var update_closures = [];
+	update(callback) {
+		update_closures.add(callback);
+		return callback();
+	}
+	var body_closures = [];
+	do_body(callback) {
+		body_closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0; check(() => i) < 8; update(() => ++i)) {
+		do_body(() => ++i);
+		values.add(i);
+	}
+	Expect.listEquals([1, 3, 5, 7], values);
+
+	Expect.listEquals([1, 3, 5, 7, 8], cond_closures.map(run).toList());
+	Expect.listEquals(   [4, 6, 8, 9], update_closures.map(run).toList());
+	Expect.listEquals([2, 5, 7, 9],    body_closures.map(run).toList());
+	Expect.listEquals([2, 5, 7, 9, 9], cond_closures.map(run).toList());
+}
+
+initializer_condition_update_body() {
+	var init;
+	var cond_closures = [];
+	check(callback) {
+		cond_closures.add(callback);
+		return callback();
+	}
+	var update_closures = [];
+	update(callback) {
+		update_closures.add(callback);
+		return callback();
+	}
+	var body_closures = [];
+	do_body(callback) {
+		body_closures.add(callback);
+		return callback();
+	}
+	var values = [];
+	for (var i=0, fn = () => i; check(() => i) < 8; update(() => ++i)) {
+		init = fn;
+		do_body(() => ++i);
+		values.add(i);
+	}
+	Expect.listEquals([1, 3, 5, 7], values);
+	Expect.equals(1, init());
+
+	Expect.listEquals([1, 3, 5, 7, 8], cond_closures.map(run).toList());
+	Expect.listEquals(   [4, 6, 8, 9], update_closures.map(run).toList());
+	Expect.listEquals([2, 5, 7, 9],    body_closures.map(run).toList());
+	Expect.listEquals([2, 5, 7, 9, 9], cond_closures.map(run).toList());
+}
+
+main() {
+	initializer();
+	condition();
+	update();
+	body();
+	initializer_condition();
+	initializer_update();
+	initializer_body();
+	condition_update();
+	condition_body();
+	initializer_condition_update();
+	initializer_condition_body();
+	initializer_update_body();
+	condition_update_body();
+	initializer_condition_update_body();
+}