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Verify struct sizing at build time.

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This commit is contained in:
Nick Brassel 2022-04-19 12:33:56 +10:00
parent 3730ddacac
commit d17aed8e82
4 changed files with 15 additions and 0 deletions
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2
data/xap/xap_0.0.1.hjson
View file

@ -142,6 +142,7 @@
name: Request Header
description: Packet format for inbound data.
type: struct
struct_length: 3
struct_members: [
{
type: token
@ -158,6 +159,7 @@
name: Response Header
description: Packet format for inbound data.
type: struct
struct_length: 4
struct_members: [
{
type: token

2
data/xap/xap_0.1.0.hjson
View file

@ -83,6 +83,7 @@
name: Broadcast Header
description: Packet format for broadcast messages.
type: struct
struct_length: 4
struct_members: [
{
type: token
@ -240,6 +241,7 @@
Retrieves the set of identifying information for the board.
'''
return_type: struct
return_struct_length: 10
return_struct_members: [
{
type: u16

2
data/xap/xap_0.2.0.hjson
View file

@ -38,6 +38,7 @@
define: GET_KEYMAP_KEYCODE
description: TODO
request_type: struct
request_struct_length: 3
request_struct_members: [
{
type: u8
@ -61,6 +62,7 @@
define: SET_KEYMAP_KEYCODE
description: TODO
request_type: struct
request_struct_length: 5
request_struct_members: [
{
type: u8

9
lib/python/qmk/xap/gen_firmware/header_generator.py
View file

@ -133,6 +133,9 @@ def _append_route_types(lines, container, container_id=None, route_stack=None):
lines.append(f' {member_type} {member_name};')
lines.append(f'}} __attribute__((__packed__)) {route_name}_arg_t;')
req_len = container['request_struct_length']
lines.append(f'_Static_assert(sizeof({route_name}_arg_t) == {req_len}, "{route_name}_arg_t needs to be {req_len} bytes in size");')
elif 'request_type' in container:
request_type = container['request_type']
found = re.search(r'(u\d+)\[(\d+)\]', request_type)
@ -153,6 +156,9 @@ def _append_route_types(lines, container, container_id=None, route_stack=None):
lines.append(f' {member_type} {member_name};')
lines.append(f'}} __attribute__((__packed__)) {route_name}_t;')
req_len = container['return_struct_length']
lines.append(f'_Static_assert(sizeof({route_name}_t) == {req_len}, "{route_name}_t needs to be {req_len} bytes in size");')
elif 'return_type' in container:
return_type = container['return_type']
found = re.search(r'(u\d+)\[(\d+)\]', return_type)
@ -213,6 +219,9 @@ def _append_internal_types(lines, container):
member_type = additional_types[member["type"]]
lines.append(f' {member_type} {member_name};')
lines.append(f'}} __attribute__((__packed__)) xap_{key}_t;')
req_len = value['struct_length']
lines.append(f'_Static_assert(sizeof(xap_{key}_t) == {req_len}, "xap_{key}_t needs to be {req_len} bytes in size");')
else:
lines.append(f'typedef {data_type} xap_{key}_t;')