| # Part of the Crubit project, under the Apache License v2.0 with LLVM |
| # Exceptions. See /LICENSE for license information. |
| # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| |
| """A rule that generates bindings source files for a given C++ library.""" |
| |
| load( |
| "//common:crubit_wrapper_macros_oss.bzl", |
| "crubit_flavor_transition", |
| ) |
| load( |
| "//rs_bindings_from_cc/bazel_support:providers.bzl", |
| "GeneratedBindingsInfo", |
| ) |
| load( |
| "//rs_bindings_from_cc/bazel_support:rust_bindings_from_cc_aspect.bzl", |
| "rust_bindings_from_cc_aspect", |
| ) |
| |
| def _generate_bindings_impl(ctx): |
| cc_library = ctx.attr.cc_library[0] |
| if not GeneratedBindingsInfo in cc_library: |
| fail("Bindings were not generated for the given cc_library.") |
| bindings = cc_library[GeneratedBindingsInfo] |
| return OutputGroupInfo( |
| cc_file = [bindings.cc_file], |
| rust_file = [bindings.rust_file], |
| namespaces_file = [bindings.namespaces_file], |
| ) |
| |
| generate_bindings = rule( |
| attrs = { |
| "cc_library": attr.label( |
| providers = [CcInfo], |
| aspects = [rust_bindings_from_cc_aspect], |
| cfg = crubit_flavor_transition, |
| ), |
| "_allowlist_function_transition": attr.label( |
| default = "@bazel_tools//tools/allowlists/function_transition_allowlist", |
| ), |
| }, |
| implementation = _generate_bindings_impl, |
| ) |
