ChainUtil autogenerated validation for unpacking.
- The new generated functions only unpack the chains while verifying
only expected extensions are on the chain.
- Further validations can be implemented on top of the tuples with
templating if desired.
Bug: dawn:1955
Change-Id: Iec47072299dd4bb6d6cb093fdd7c211f8dbdb494
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/146361
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Loko Kung <lokokung@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/generator/dawn_json_generator.py b/generator/dawn_json_generator.py
index 91c8ee7..1ebf88b 100644
--- a/generator/dawn_json_generator.py
+++ b/generator/dawn_json_generator.py
@@ -247,12 +247,14 @@
if self.chained:
assert self.chained == 'in' or self.chained == 'out'
assert 'chain roots' in json_data
+ self.chain_roots = []
if self.extensible:
assert self.extensible == 'in' or self.extensible == 'out'
# Chained structs inherit from wgpu::ChainedStruct, which has
# nextInChain, so setting both extensible and chained would result in
# two nextInChain members.
assert not (self.extensible and self.chained)
+ self.extensions = []
def update_metadata(self):
Record.update_metadata(self)
@@ -384,6 +386,9 @@
def link_structure(struct, types):
struct.members = linked_record_members(struct.json_data['members'], types)
+ for root in struct.json_data.get('chain roots', []):
+ struct.chain_roots.append(types[root])
+ types[root].extensions.append(struct)
struct.chain_roots = [types[root] for root in struct.json_data.get('chain roots', [])]
assert all((root.category == 'structure' for root in struct.chain_roots))
