Revert "Andrewmwells/protobufs (#1277)"

This reverts commit 6b16db5.

Signed-off-by: Shaobo He <[email protected]>

Author: shaobo-he-aws

.github/workflows/build_and_test.yml

@@ -18,7 +18,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - run: sudo apt-get install protobuf-compiler
       - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
       - run: ./panic_safety.sh
       - run: cargo doc --all-features --no-deps
@@ -44,7 +43,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - run: sudo apt-get install protobuf-compiler
       - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
       # Clippy is configured by `.cargo/config.toml` to deny on lints like
       # `unwrap_used`. They aren't detected by `panic_safety.sh` which only

.github/workflows/ci.yml

@@ -40,7 +40,6 @@ jobs:
       # `cargo semver-checks` doesn't understand `rlib` crates.
       - run: >-
           sed -i -E 's/^(crate-type = \["rlib", "cdylib"\]|crate-type = \["rlib"\])$/crate-type = ["lib"]/' {head,base}/cedar-policy/Cargo.toml
-      - run: sudo apt-get install protobuf-compiler
       - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
       - run: cargo install cargo-semver-checks
       - run: cargo semver-checks check-release --package cedar-policy --baseline-root ../base

cedar-policy-core/Cargo.toml

@@ -37,9 +37,6 @@ serde-wasm-bindgen = { version = "0.6", optional = true }
 tsify = { version = "0.4.5", optional = true }
 wasm-bindgen = { version = "0.2.82", optional = true }
 
-# protobuf dependency
-prost = { version = "0.13.3", optional = true }
-
 [features]
 # by default, enable all Cedar extensions
 default = ["ipaddr", "decimal"]
@@ -55,12 +52,9 @@ test-util = []
 # Experimental features.
 partial-eval = []
 wasm = ["serde-wasm-bindgen", "tsify", "wasm-bindgen"]
-protobufs = ["dep:prost", "dep:prost-build"]
 
 [build-dependencies]
 lalrpop = "0.22.0"
-# protobuf dependency
-prost-build = { version = "0.13.3", optional = true }
 
 [dev-dependencies]
 cool_asserts = "2.0"

cedar-policy-core/build.rs

@@ -16,8 +16,6 @@
 
 fn main() {
     generate_parsers();
-    #[cfg(feature = "protobufs")]
-    generate_schemas();
 }
 
 /// Reads parser grammar files (.lalrpop) and generates Rust modules
@@ -28,12 +26,3 @@ fn generate_parsers() {
         .process_dir("src/parser/")
         .expect("parser synth");
 }
-
-#[cfg(feature = "protobufs")]
-/// Reads protobuf schema files (.proto) and generates Rust modules
-fn generate_schemas() {
-    // PANIC SAFETY: static file compiled at build time
-    #[allow(clippy::expect_used)]
-    prost_build::compile_protos(&["./protobuf_schema/AST.proto"], &["./protobuf_schema"])
-        .expect("failed to compile `.proto` schema files");
-}