Implementation for ClosureMirror.findInContext.

tests/lib/mirrors/closure_mirror_find_in_context_test.dart

+// Copyright (c) 2013, 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 "dart:mirrors";
+
+import "stringify.dart";
+
+import "package:expect/expect.dart";
+
+import "closure_mirror_import1.dart";
+import "closure_mirror_import1.dart" as imp1;
+import "closure_mirror_import1.dart" as imp1_hidden
+    hide globalVariableInImport, StaticClass;
+import "closure_mirror_import2.dart" as imp2;
+
+var globalVariable = "globalVariable";
+
+globalFoo() => 17;
+
+class S { 
+  static staticFooInS() => "staticFooInS";
+  static var staticInS = "staticInS";
+  var instanceInS = "instanceInS";
+}
+
+class C extends S { 
+  static staticFooInC() => "staticFooInC";
+  static var staticInC = "staticInC";
+  var instanceInC = "instanceInC";
+
+  foo() => null;
+
+  bar() {
+    var x = 7;
+    var instanceInC = 11;  // Shadowing the instance field.
+    var y = 3;  // Not in context.
+    baz() {
+      if (x) {}
+      if (instanceInC) {}
+    };
+    return reflect(baz);
+  }
+
+  baz() {
+    var instanceInC = null; // Shadowing with a null value.
+    return reflect(() => instanceInC);
+  }
+}
+
+main() {
+  C c = new C();
+  ClosureMirror cm = reflect(c.foo);
+
+  var result;
+
+  result = cm.findInContext(#globalVariable);
+  expect("Instance(value = globalVariable)", result);
+
+  result = cm.findInContext(#globalFoo);
+  Expect.isTrue(result is ClosureMirror);
+  expect("Instance(value = 17)", result.apply(const []));
+
+  result = cm.findInContext(#S.staticInS);
+  expect("Instance(value = staticInS)", result);
+
+  result = cm.findInContext(#staticInS);
+  Expect.isFalse(result is InstanceMirror);
+  Expect.equals(null, result);
+
+  result = cm.findInContext(#staticFooInS);
+  Expect.isTrue(result is ClosureMirror);
+  expect("Instance(value = staticFooInS)", result.apply(const []));
+
+  result = cm.findInContext(#C.staticFooInS);
+  Expect.isTrue(result is ClosureMirror);
+  expect("Instance(value = staticFooInS)", result.apply(const []));
+
+  result = cm.findInContext(#C.staticInC);
+  expect("Instance(value = staticInC)", result);
+
+  result = cm.findInContext(#staticInC);
+  expect("Instance(value = staticInC)", result);
+
+  result = cm.findInContext(#C.staticFooInC);
+  Expect.isTrue(result is ClosureMirror);
+  expect("Instance(value = staticFooInC)", result.apply(const []));
+
+  result = cm.findInContext(#staticFooInC);
+  Expect.isTrue(result is ClosureMirror);
+  expect("Instance(value = staticFooInC)", result.apply(const []));
+
+  result = cm.findInContext(#instanceInC);
+  expect("Instance(value = instanceInC)", result);
+
+  result = cm.findInContext(#instanceInS);
+  expect("Instance(value = instanceInS)", result);
+
+  result = cm.findInContext(#globalVariableInImport1);
+  expect("Instance(value = globalVariableInImport1)", result);
+
+  result = cm.findInContext(#StaticClass.staticField);
+  expect("Instance(value = staticField)", result);
+
+  result = cm.findInContext(#StaticClass.staticFunctionInStaticClass);
+  Expect.isTrue(result is ClosureMirror);
+  expect("Instance(value = staticFunctionInStaticClass)",
+         result.apply(const []));
+
+  result = cm.findInContext(#imp1.StaticClass.staticFunctionInStaticClass);
+  Expect.isTrue(result is ClosureMirror);
+  expect("Instance(value = staticFunctionInStaticClass)",
+         result.apply(const []));
+
+  result = cm.findInContext(#imp1.globalVariableInImport1);
+  expect("Instance(value = globalVariableInImport1)", result);
+
+  result = cm.findInContext(#imp2.globalVariableInImport);
+  Expect.isFalse(result is InstanceMirror);
+  Expect.equals(null, result);
+
+  result = cm.findInContext(#imp1.StaticClass.staticField);
+  expect("Instance(value = staticField)", result);
+
+  result = cm.findInContext(#imp1_hidden.StaticClass.staticField);
+  Expect.isFalse(result is InstanceMirror);
+  Expect.equals(null, result);
+
+  result = cm.findInContext(#firstGlobalVariableInImport2);
+  expect("Instance(value = firstGlobalVariableInImport2)", result);
+
+  result = cm.findInContext(#secondGlobalVariableInImport2);
+  Expect.isFalse(result is InstanceMirror);
+  Expect.equals(null, result);
+
+  result = cm.findInContext(#imp2.secondGlobalVariableInImport2);
+  expect("Instance(value = secondGlobalVariableInImport2)", result);
+
+  result = c.bar().findInContext(#x);
+  expect("Instance(value = 7)", result);
+
+  result = c.bar().findInContext(#instanceInC);
+  expect("Instance(value = 11)", result);
+
+  result = c.bar().findInContext(#y);
+  Expect.isFalse(result is InstanceMirror);
+  Expect.equals(null, result);
+
+  result = c.baz().findInContext(#instanceInC);
+  expect("Instance(value = <null>)", result);
+}