Extract rust_common.compile

rs_bindings_from_cc/bazel_support/compile_rust.bzl

@@ -5,45 +5,12 @@
 """Utility module for sharing logic between rules and aspects that generate Rust bindings from C++.
 """
 
-load("@rules_rust//:version.bzl", RUST_VERSION = "VERSION")
-
-# buildifier: disable=bzl-visibility
-load("@rules_rust//rust/private:providers.bzl", "DepVariantInfo")
-
 # buildifier: disable=bzl-visibility
 load(
-    "@rules_rust//rust/private:rustc.bzl",
-    "rustc_compile_action",
+    "@rules_rust//rust/private:common.bzl",
+    "rust_common",
 )
 
-load("@bazel_skylib//lib:structs.bzl", "structs")
-
-def _version_parts(version):
-    major, minor = version.split(".")[0:2]
-    return (int(major), int(minor))
-
-def _rust_version_ge(version):
-    """Checks if the rust version as at least the given major.minor version."""
-    return _version_parts(RUST_VERSION) >= _version_parts(version)
-
-def _get_crate_info(providers):
-    for provider in providers:
-        if hasattr(provider, "name"):
-            return provider
-    fail("Couldn't find a CrateInfo in the list of providers")
-
-def _get_dep_info(providers):
-    for provider in providers:
-        if hasattr(provider, "direct_crates"):
-            return provider
-    fail("Couldn't find a DepInfo in the list of providers")
-
-def _get_cc_info(providers):
-    for provider in providers:
-        if hasattr(provider, "linking_context"):
-            return provider
-    fail("Couldn't find a CcInfo in the list of providers")
-
 def compile_rust(ctx, attr, src, extra_srcs, deps, crate_name, include_coverage, force_all_deps_direct, allow_lto = True, aliases = {}):
     """Compiles a Rust source file.
 
@@ -62,70 +29,23 @@ def compile_rust(ctx, attr, src, extra_srcs, deps, crate_name, include_coverage,
     Returns:
       A DepVariantInfo provider.
     """
-    toolchain = ctx.toolchains["@rules_rust//rust:toolchain_type"]
 
-    output_hash = repr(hash(src.path))
+    emit_rmeta = True
 
-    lib_name = "{prefix}{name}-{lib_hash}{extension}".format(
-        prefix = "lib",
-        name = crate_name,
-        lib_hash = output_hash,
-        extension = ".rlib",
-    )
-
-    rmeta_name = "{prefix}{name}-{lib_hash}{extension}".format(
-        prefix = "lib",
-        name = crate_name,
-        lib_hash = output_hash,
-        extension = ".rmeta",
-    )
-
-    lib = ctx.actions.declare_file(lib_name)
-
-    rmeta = ctx.actions.declare_file(rmeta_name)
-
-    # TODO(b/336367148): We should inherit almost nothing from `attr`, but for now, at least, we
-    # should omit the rustc_flags.
-    attr_args = structs.to_dict(attr)
-    attr_args["rustc_flags"] = []
-
-    if _rust_version_ge("0.67"):
-        srcs = [src] + extra_srcs
-    else:
-        srcs = depset([src] + extra_srcs)
-
-    providers = rustc_compile_action(
+    return rust_common.compile_rust(
         ctx = ctx,
-        attr = struct(**attr_args),
-        toolchain = toolchain,
-        crate_info_dict = dict(
-            name = crate_name,
-            type = "rlib",
-            root = src,
-            srcs = srcs,
-            deps = deps.to_list(),
-            proc_macro_deps = [],
-            aliases = aliases,
-            output = lib,
-            metadata = rmeta,
-            edition = "2018",
-            is_test = False,
-            rustc_env = {},
-            compile_data = depset([]),
-            compile_data_targets = depset([]),
-            owner = ctx.label,
-        ),
+        attr = attr,
+        src = src,
+        extra_srcs = extra_srcs,
+        deps = deps,
+        edition = "2018",
+        emit_rmeta = emit_rmeta,
+        crate_name = crate_name,
+        aliases = aliases,
+        include_coverage = include_coverage,
+        allow_lto = allow_lto,
+        force_all_deps_direct = force_all_deps_direct,
         # LINT.IfChange
         rust_flags = ["-Zallow-features=custom_inner_attributes,impl_trait_in_assoc_type,register_tool,negative_impls,extern_types,arbitrary_self_types,allocator_api,cfg_sanitize"],
         # LINT.ThenChange(//docs/overview/unstable_features.md)
-        output_hash = output_hash,
-        force_all_deps_direct = force_all_deps_direct,
-        include_coverage = include_coverage,
-    )
-
-    return DepVariantInfo(
-        crate_info = _get_crate_info(providers),
-        dep_info = _get_dep_info(providers),
-        cc_info = _get_cc_info(providers),
-        build_info = None,
     )