testdata/parameters.emb

# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

[$default byte_order: "LittleEndian"]
[(cpp) namespace: "emboss_test"]

enum Product:
  VERSION_1 = 0
  VERSION_2 = 10
  VERSION_X = 23

enum MessageId:
  AXIS = 0
  CONFIG = 1

struct Multiversion(product: Product):
  0 [+1]     MessageId                            message_id
  if message_id == MessageId.AXIS:
    1 [+12]  Axes(product == Product.VERSION_X ? 3 : 2)  axes
  if message_id == MessageId.CONFIG:
    1 [+4]  Config                                config
  if product == Product.VERSION_X && message_id == MessageId.CONFIG:
    1 [+8]  ConfigVX()                            config_vx

struct Axes(axes: UInt:4):
  0 [+axes * 4]  Axis(AxisType.GENERIC)[]  values
  if axes > 0:
    0 [+4]       Axis(AxisType.X_AXIS)     x
  if axes > 1:
    4 [+4]       Axis(AxisType.Y_AXIS)     y
  if axes > 2:
    8 [+4]       Axis(AxisType.Z_AXIS)     z
  let axis_count_plus_one = axes + 1

struct AxesEnvelope:
  0 [+1]             UInt:8            axis_count
  1 [+axis_count*4]  Axes(axis_count)  axes

enum AxisType:
  GENERIC = -1
  X_AXIS = 1
  Y_AXIS = 2
  Z_AXIS = 3

struct Axis(axis_type_parameter: AxisType):
  let axis_type = axis_type_parameter
  0 [+4]  UInt:32  value
  if axis_type == AxisType.X_AXIS:
    0 [+4]  UInt:32  x
  if axis_type == AxisType.Y_AXIS:
    0 [+4]  UInt:32  y
  if axis_type == AxisType.Z_AXIS:
    0 [+4]  UInt:32  z

bits Config():
  31 [+1]  Flag  power

struct ConfigVX:
  0 [+4]  bits:
    31 [+1]  Flag  power
  4 [+4]     UInt  gain


struct StructWithUnusedParameter(x: UInt:8):
  0 [+1]  UInt  y

# StructContainingStructWithUnusedParameter is used to ensure that a struct is
# not Ok() if it does not have its parameters, even if it does not directly use
# those parameters.
struct StructContainingStructWithUnusedParameter:
  0 [+1]  StructWithUnusedParameter(x)  swup
  1 [+1]  UInt                          x

struct BiasedValue(bias: UInt:8):
  0 [+1]  UInt  raw_value
  let value = raw_value + bias

struct SizedArrayOfBiasedValues:
  0 [+1]   UInt                 element_count (ec)
  1 [+1]   UInt                 bias
  2 [+ec]  BiasedValue(bias)[]  values