SkPDF: Glyph validation change

src/pdf/SkScoped.h

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkScoped_DEFINED
+#define SkScoped_DEFINED
+
+/**
+* sk_at_scope_end(stmt) evaluates stmt when the current scope ends.
+*
+* E.g.
+*
+* int x = 5;
+* {
+*    sk_at_scope_end(x--);
+*    SkASSERT(x == 5);
+* }
+* SkASSERT(x == 4);
+*/
+template <typename Fn>
+class SkScoped {

[bungeman-skia, 2016/08/26 18:24:42]

SkScopeExit

[hal.canary, 2016/08/26 19:22:37]

Done.

+public:
+    SkScoped(Fn f) : fFn(std::move(f)) {}
+    ~SkScoped() { fFn(); }
+
+private:
+    Fn fFn;
+
+    SkScoped(           const SkScoped& ) = delete;
+    SkScoped& operator=(const SkScoped& ) = delete;
+    SkScoped(                 SkScoped&&) = delete;
+    SkScoped& operator=(      SkScoped&&) = delete;
+};
+
+template <typename Fn>
+inline SkScoped<Fn> SkMakeScoped(Fn&& fn) {

[bungeman-skia, 2016/08/26 18:24:42]

SkMakeScopeExit

[hal.canary, 2016/08/26 19:22:37]

Done.

+    return {std::move(fn)};
+}
+
+#define sk_at_scope_end(stmt)                               \

[bungeman-skia, 2016/08/26 18:24:42]

SK_AT_SCOPE_EXIT

+    SK_UNUSED auto&& SK_MACRO_APPEND_LINE(at_scope_exit_) = \

[bungeman-skia, 2016/08/26 18:24:42]

You'll also need

https://codereview.chromium.org/2274863002/diff/40001/include/core/SkPostConf...

to get SK_UNUSED hooked up on msvc.

+        SkMakeScoped([&]() { stmt; });
+
+#endif  // SkScoped_DEFINED