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 // Copyright (c) 2012, 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"; final x = foo(); var x2 = foo2(); var x3 = foo3(); var x4 = foo4(); var x5 = foo5(); final x6 = foo6(); // Don't allow unlimited recursion to overflow the stack. var x7Depth = 0; int x7 = (++x7Depth > 10) ? x7Depth : x7 + 1; foo() { throw "interrupt initialization"; } foo2() { x2 = 499; throw "interrupt initialization"; } // Don't allow unlimited recursion to overflow the stack. var foo3Depth = 0; foo3() => (++foo3Depth > 10) ? foo3Depth : x3 + 1; foo4() { x4 = 498; x4 = x4 + 1; return x4; } foo5() { x5 = 498; x5 = x5 + 1; } foo6() { try { return x5 + 1; } catch (e) { return 499; } } fib(x) { if (x is! int) return 0; if (x < 2) return x; return fib(x - 1) + fib(x - 2); } main() { // If an initializer throws, then accessing it again re-evaluates the // initializer. Expect.throws(() => fib(x), (e) => e == "interrupt initialization"); Expect.throws(() => fib(x), (e) => e == "interrupt initialization"); Expect.throws(() => fib(x), (e) => e == "interrupt initialization"); Expect.throws(() => fib(x2), (e) => e == "interrupt initialization"); // The store happened before the throw, so is there now. Expect.equals(499, x2); // This value means that the initializer did fully call itself recursively. Expect.equals(21, x3); Expect.equals(499, x4); Expect.equals(null, x5); Expect.equals(499, x6); // This value means that the initializer did fully call itself recursively. Expect.equals(21, x7); }