commit 2b24c3d92df5a473b752a0c145b79096441f5d50
author Corentin Wallez <cwallez@chromium.org> Wed Jan 15 09:54:42 2020 +0000
committer Commit Bot service account <commit-bot@chromium.org> Wed Jan 15 09:54:42 2020 +0000
tree b3c9af538b909c7bfcb1bccdccf4cd5e70a09303
parent 7f078e7ebe3f1046b57f4fb3cc21805b4348dbf9

webgpu.h introduce a base struct for extension structures.

 struct WGPUChainedStruct {
     WGPUChainedStruct const * nextInChain;
     WGPUSType sType;
 };

And changes all the nextInChain to point to such structures. This adds
more type safety to extension structs and requires less casting to check
sTypes and friends.

Bug: dawn:269

Change-Id: I443f363cdb55dbec7c7f6e897245d4a7ea0ebe70
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/15080
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>

generator/templates/webgpu.h

diff --git a/generator/templates/webgpu.h b/generator/templates/webgpu.h
index d1fcb32..aec3a18 100644
--- a/generator/templates/webgpu.h
+++ b/generator/templates/webgpu.h
@@ -73,10 +73,19 @@
 
 {% endfor %}
 
+typedef struct WGPUChainedStruct {
+    struct WGPUChainedStruct const * nextInChain;
+    WGPUSType sType;
+} WGPUChainedStruct;
+
 {% for type in by_category["structure"] %}
     typedef struct {{as_cType(type.name)}} {
         {% if type.extensible %}
-            void const * nextInChain;
+            WGPUChainedStruct const * nextInChain;
+        {% endif %}
+        {% if type.chained %}
+            WGPUChainedStruct const * nextInChain;
+            WGPUSType sType;
         {% endif %}
         {% for member in type.members %}
             {{as_annotated_cType(member)}};