rs_bindings_from_cc/bazel_support/providers.bzl

# 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

"""All providers involved in C++/Rust interop."""

RustBindingsFromCcInfo = provider(
    doc = ("A provider that contains compile and linking information for the generated" +
           " `.cc` and `.rs` files."),
    fields = {
        "cc_info": "A CcInfo provider for the implementation of the API projection.",
        "dep_variant_info": ("A DepVariantInfo provider that carries information from the " +
                             "compiled `.rs` file."),
        "targets_and_headers": ("A depset of strings, each one representing mapping of target to " +
                                "its headers in json format."),
        "namespaces": ("A json file containing the namespace hierarchy for the target we " +
                       "are generating bindings for."),
    },
)

RustToolchainHeadersInfo = provider(
    doc = "A provider that contains all toolchain C++ headers",
    fields = {"headers": "depset"},
)

GeneratedBindingsInfo = provider(
    doc = "A provider that contains the generated C++ and Rust source files.",
    fields = {
        "cc_file": "The generated C++ source file.",
        "rust_file": "The generated Rust source file.",
        "namespaces_file": "The generated namespace hierarchy in JSON format.",
    },
)

DepsForBindingsInfo = provider(
    doc = """A provider that serves to pass on dependencies needed when compiling the generated
          Rust and C++ files.""",
    fields = {
        "deps_for_rs_file": "list[DepVariantInfo]",
        "deps_for_cc_file": "list[CcInfo]",
    },
)