body->set_block_scope(block_scope);
if (block_scope != NULL) {
- // Create exit block.
- Block* exit = new(zone()) Block(isolate(), NULL, 1, false);
+ // Rewrite the block { B } to a block: { { B } ExitContext; }
+ Block* exit = new(zone()) Block(isolate(), NULL, 2, false);
+ exit->AddStatement(body);
exit->AddStatement(new(zone()) ExitContextStatement());
-
- // Create a try-finally statement.
- TryFinallyStatement* try_finally =
- new(zone()) TryFinallyStatement(body, exit);
- try_finally->set_escaping_targets(collector.targets());
-
- // Create a result block.
- Block* result = new(zone()) Block(isolate(), NULL, 1, false);
- result->AddStatement(try_finally);
- return result;
+ return exit;
} else {
return body;
}
--- /dev/null
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-block-scoping
+
+// We want to test the context chain shape. In each of the tests cases
+// below, the outer with is to force a runtime lookup of the identifier 'x'
+// to actually verify that the inner context has been discarded. A static
+// lookup of 'x' might accidentally succeed.
+
+{
+ let x = 2;
+ L: {
+ let x = 3;
+ assertEquals(3, x);
+ break L;
+ assertTrue(false);
+ }
+ assertEquals(2, x);
+}
+
+do {
+ let x = 4;
+ assertEquals(4,x);
+ {
+ let x = 5;
+ assertEquals(5, x);
+ continue;
+ assertTrue(false);
+ }
+} while (false);
+
+var caught = false;
+try {
+ {
+ let xx = 18;
+ throw 25;
+ assertTrue(false);
+ }
+} catch (e) {
+ caught = true;
+ assertEquals(25, e);
+ with ({y:19}) {
+ assertEquals(19, y);
+ try {
+ // NOTE: This checks that the block scope containing xx has been
+ // removed from the context chain.
+ xx;
+ assertTrue(false); // should not reach here
+ } catch (e2) {
+ assertTrue(e2 instanceof ReferenceError);
+ }
+ }
+}
+assertTrue(caught);
+
+
+with ({x: 'outer'}) {
+ label: {
+ let x = 'inner';
+ break label;
+ }
+ assertEquals('outer', x);
+}
+
+
+with ({x: 'outer'}) {
+ label: {
+ let x = 'middle';
+ {
+ let x = 'inner';
+ break label;
+ }
+ }
+ assertEquals('outer', x);
+}
+
+
+with ({x: 'outer'}) {
+ for (var i = 0; i < 10; ++i) {
+ let x = 'inner' + i;
+ continue;
+ }
+ assertEquals('outer', x);
+}
+
+
+with ({x: 'outer'}) {
+ label: for (var i = 0; i < 10; ++i) {
+ let x = 'middle' + i;
+ for (var j = 0; j < 10; ++j) {
+ let x = 'inner' + j;
+ continue label;
+ }
+ }
+ assertEquals('outer', x);
+}
+
+
+with ({x: 'outer'}) {
+ try {
+ let x = 'inner';
+ throw 0;
+ } catch (e) {
+ assertEquals('outer', x);
+ }
+}
+
+
+with ({x: 'outer'}) {
+ try {
+ let x = 'middle';
+ {
+ let x = 'inner';
+ throw 0;
+ }
+ } catch (e) {
+ assertEquals('outer', x);
+ }
+}
+
+
+try {
+ with ({x: 'outer'}) {
+ try {
+ let x = 'inner';
+ throw 0;
+ } finally {
+ assertEquals('outer', x);
+ }
+ }
+} catch (e) {
+ if (e instanceof MjsUnitAssertionError) throw e;
+}
+
+
+try {
+ with ({x: 'outer'}) {
+ try {
+ let x = 'middle';
+ {
+ let x = 'inner';
+ throw 0;
+ }
+ } finally {
+ assertEquals('outer', x);
+ }
+ }
+} catch (e) {
+ if (e instanceof MjsUnitAssertionError) throw e;
+}
+
+
+// Verify that the context is correctly set in the stack frame after exiting
+// from with.
+function f() {}
+
+with ({x: 'outer'}) {
+ label: {
+ let x = 'inner';
+ break label;
+ }
+ f(); // The context could be restored from the stack after the call.
+ assertEquals('outer', x);
+}
+
+
+with ({x: 'outer'}) {
+ for (var i = 0; i < 10; ++i) {
+ let x = 'inner';
+ continue;
+ }
+ f();
+ assertEquals('outer', x);
+}
+
+
+with ({x: 'outer'}) {
+ try {
+ let x = 'inner';
+ throw 0;
+ } catch (e) {
+ f();
+ assertEquals('outer', x);
+ }
+}
+
+
+try {
+ with ({x: 'outer'}) {
+ try {
+ let x = 'inner';
+ throw 0;
+ } finally {
+ f();
+ assertEquals('outer', x);
+ }
+ }
+} catch (e) {
+ if (e instanceof MjsUnitAssertionError) throw e;
+}
projects / platform / upstream / v8.git / commitdiff