name: Rust setup
description: Install a Rust toolchain and warm the cargo + tree-sitter grammar caches.

inputs:
  toolchain:
    description: Rust toolchain to install.
    required: true
  components:
    description: Comma-separated rustup components.
    required: false
    default: ''
  cache-key:
    description: shared-key for Swatinem/rust-cache.
    required: true
  cache-grammars:
    description: Whether to cache runtime/grammars. Only set true for jobs that fetch grammars (cargo test / xtask query-check).
    required: false
    default: 'false'
  grammar-cache-version:
    description: Bump to bust the grammar cache.
    required: false
    default: ''

runs:
  using: composite
  steps:
    - uses: dtolnay/rust-toolchain@3c5f7ea28cd621ae0bf5283f0e981fb97b8a7af9 # master
      with:
        toolchain: ${{ inputs.toolchain }}
        components: ${{ inputs.components }}

    - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
      with:
        shared-key: ${{ inputs.cache-key }}

    - if: inputs.cache-grammars == 'true'
      uses: actions/cache@v5
      with:
        path: runtime/grammars
        key: ${{ runner.os }}-${{ runner.arch }}-stable-v${{ inputs.grammar-cache-version }}-tree-sitter-grammars-${{ hashFiles('languages.toml') }}
        restore-keys: ${{ runner.os }}-${{ runner.arch }}-stable-v${{ inputs.grammar-cache-version }}-tree-sitter-grammars-