#!/usr/bin/env python3

# `cargo clippy` runs clippy-driver in place of rustc by setting
# RUSTC_WORKSPACE_WRAPPER, which cargo only applies to workspace members. A
# fair amount of first-party rust lives in crates that the top-level
# Cargo.toml excludes from the workspace (servo/, gfx/wr/, ...).
#
# We are passed to cargo as RUSTC_WRAPPER instead, which cargo applies to every
# crate. Cargo invokes `$RUSTC_WRAPPER $RUSTC_WORKSPACE_WRAPPER $RUSTC ...`, so
# all we have to do is splice clippy-driver in ourselves if cargo hasn't already.
#
# Vendored crates are compiled with `--cap-lints allow`, which stops
# clippy-driver from linting them, so they need no special casing here.

import os
import sys

args = sys.argv[1:]

workspace_wrapper = os.environ.get("RUSTC_WORKSPACE_WRAPPER")
if workspace_wrapper and os.path.splitext(os.path.basename(args[0]))[0] != "clippy-driver":
    args.insert(0, workspace_wrapper)

if sys.platform == "win32":
    # For some reason, os.execvp doesn't handle arguments properly on Windows.
    # See https://github.com/python/cpython/issues/101191 and
    # https://glandium.org/blog/?p=3051 for context.
    import subprocess
    sys.exit(subprocess.run(args).returncode)

os.execvp(args[0], args)