feat: obtain interface version from cmake variable (#191)

* feat: obtain interface version from cmake variable

Signed-off-by: Daisuke Nishimatsu <[email protected]>

* refactor: append package version into generator arguments file

Signed-off-by: Daisuke Nishimatsu <[email protected]>

Author: wep21

rosidl_generator_rs/bin/rosidl_generator_rs

@@ -33,7 +33,10 @@ def main(argv=sys.argv[1:]):
         help='All the available typesupport implementations')
     args = parser.parse_args(argv)
 
-    return generate_rs(args.generator_arguments_file, args.typesupport_impls)
+    return generate_rs(
+        args.generator_arguments_file,
+        args.typesupport_impls,
+    )
 
 
 if __name__ == '__main__':

rosidl_generator_rs/cmake/rosidl_generator_rs_generate_interfaces.cmake

@@ -130,6 +130,11 @@ rosidl_write_generator_arguments(
   TARGET_DEPENDENCIES ${target_dependencies}
 )
 
+file(READ ${generator_arguments_file} contents)
+string(REPLACE "\n}"
+  ",\n  \"package_version\": \"${${PROJECT_NAME}_VERSION}\"\n}" contents ${contents})
+file(WRITE ${generator_arguments_file} ${contents})
+
 file(MAKE_DIRECTORY "${_output_path}")
 
 set(_target_suffix "__rs")

rosidl_generator_rs/resource/Cargo.toml.em

@@ -1,8 +1,6 @@
 [package]
 name = "@(package_name)"
-@# The version should ideally be taken from package.xml, see
-@# https://github.com/ros2-rust/ros2_rust/issues/116
-version = "0.2.0"
+version = "@(package_version)"
 edition = "2021"
 
 [dependencies]

rosidl_generator_rs/rosidl_generator_rs/__init__.py

@@ -157,6 +157,7 @@ def generate_rs(generator_arguments_file, typesupport_impls):
     cargo_toml_data = {
         'dependency_packages': dependency_packages,
         'package_name': args['package_name'],
+        'package_version': args['package_version'],
     }
     expand_template(
         os.path.join(template_dir, 'Cargo.toml.em'),