feat: Rapidsnark crate (#39)

rust/Cargo.lock

@@ -231,6 +231,13 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "logos-blockchain-circuits-rapidsnark-sys"
+version = "0.5.0"
+dependencies = [
+ "logos-blockchain-circuits-build",
+]
+
 [[package]]
 name = "logos-blockchain-circuits-signature-sys"
 version = "0.5.0"

rust/Cargo.toml

@@ -18,6 +18,7 @@ members = [
   "logos-blockchain-circuits-tests",
   "logos-blockchain-circuits-types",
   "logos-blockchain-circuits-common",
+  "logos-blockchain-circuits-rapidsnark-sys",
 ]
 resolver = "3"
 
@@ -28,6 +29,7 @@ lbc-build = { package = "logos-blockchain-circuits-build", path = "./logos-block
 lbc-poc-sys = { package = "logos-blockchain-circuits-poc-sys", path = "./logos-blockchain-circuits-poc-sys" }
 lbc-pol-sys = { package = "logos-blockchain-circuits-pol-sys", path = "./logos-blockchain-circuits-pol-sys" }
 lbc-poq-sys = { package = "logos-blockchain-circuits-poq-sys", path = "./logos-blockchain-circuits-poq-sys" }
+lbc-rapidsnark-sys = { package = "logos-blockchain-circuits-rapidsnark-sys", path = "./logos-blockchain-circuits-rapidsnark-sys" }
 lbc-signature-sys = { package = "logos-blockchain-circuits-signature-sys", path = "./logos-blockchain-circuits-signature-sys" }
 lbc-types = { default-features = false, package = "logos-blockchain-circuits-types", path = "./logos-blockchain-circuits-types" }
 

rust/logos-blockchain-circuits-build/src/lib.rs

@@ -115,13 +115,13 @@ mod prebuilt {
     }
 }
 
-pub fn build(circuit_name: &str) {
+fn resolve_root() -> PathBuf {
     println!("cargo:rerun-if-env-changed={LBC_ROOT_DIR}");
     println!("cargo:rerun-if-env-changed=CARGO_PKG_VERSION");
     println!("cargo:rerun-if-changed=Cargo.toml");
     println!("cargo:rerun-if-changed=build.rs");
 
-    let lbc_root_dir = std::env::var(LBC_ROOT_DIR).map_or_else(
+    let root = std::env::var(LBC_ROOT_DIR).map_or_else(
         |_| {
             #[cfg(not(feature = "prebuilt"))]
             panic!(
@@ -150,23 +150,30 @@ pub fn build(circuit_name: &str) {
         },
     );
 
-    let lbc_root_dir_str = lbc_root_dir
+    let root_str = root
         .to_str()
         .expect("Failed to convert the root directory path to a string");
 
-    let circuit_dir = lbc_root_dir.join(circuit_name);
+    println!("cargo:rustc-env={LBC_ROOT_DIR}={root_str}");
+
+    root
+}
+
+pub fn build_circuit(circuit_name: &str) {
+    let root = resolve_root();
+
+    let circuit_dir = root.join(circuit_name);
     let circuit_dir_str = circuit_dir
         .to_str()
         .expect("Failed to convert the circuit directory path to a string");
 
-    let lib_dir = lbc_root_dir.join("lib");
+    let lib_dir = root.join("lib");
     let lib_dir_str = lib_dir
         .to_str()
         .expect("Failed to convert the lib directory path to a string");
 
     println!("cargo:rerun-if-changed={circuit_dir_str}");
     println!("cargo:rerun-if-changed={lib_dir_str}");
-    println!("cargo:rustc-env={LBC_ROOT_DIR}={lbc_root_dir_str}");
     println!("cargo:rustc-link-search=native={circuit_dir_str}");
     println!("cargo:rustc-link-search=native={lib_dir_str}");
     println!("cargo:rustc-link-lib=static={circuit_name}");
@@ -177,3 +184,12 @@ pub fn build(circuit_name: &str) {
     println!("cargo:rustc-link-lib={cpp_lib}");
     println!("cargo:rustc-link-lib=static=gmp");
 }
+
+pub fn build_rapidsnark() {
+    let root = resolve_root();
+
+    for binary in ["prover", "verifier"] {
+        let path = root.join(binary);
+        println!("cargo:rerun-if-changed={}", path.display());
+    }
+}

rust/logos-blockchain-circuits-poc-sys/build.rs

@@ -1,3 +1,3 @@
 fn main() {
-    lbc_build::build("poc");
+    lbc_build::build_circuit("poc");
 }

rust/logos-blockchain-circuits-pol-sys/build.rs

@@ -1,3 +1,3 @@
 fn main() {
-    lbc_build::build("pol");
+    lbc_build::build_circuit("pol");
 }

rust/logos-blockchain-circuits-poq-sys/build.rs

@@ -1,3 +1,3 @@
 fn main() {
-    lbc_build::build("poq");
+    lbc_build::build_circuit("poq");
 }

rust/logos-blockchain-circuits-rapidsnark-sys/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "logos-blockchain-circuits-rapidsnark-sys"
+categories.workspace = true
+description.workspace = true
+edition.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+repository.workspace = true
+version.workspace = true
+
+[features]
+default = ["prebuilt"]
+prebuilt = ["lbc-build/prebuilt"]
+
+[lints]
+workspace = true
+
+[dependencies]
+
+[build-dependencies]
+lbc-build = { workspace = true }

rust/logos-blockchain-circuits-rapidsnark-sys/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    lbc_build::build_rapidsnark();
+}

rust/logos-blockchain-circuits-rapidsnark-sys/src/lib.rs

@@ -0,0 +1,26 @@
+use std::path::PathBuf;
+
+#[cfg(target_os = "windows")]
+const PROVER_BINARY: &str = "prover.exe";
+#[cfg(not(target_os = "windows"))]
+const PROVER_BINARY: &str = "prover";
+
+#[cfg(target_os = "windows")]
+const VERIFIER_BINARY: &str = "verifier.exe";
+#[cfg(not(target_os = "windows"))]
+const VERIFIER_BINARY: &str = "verifier";
+
+#[must_use]
+fn lbc_root_dir() -> PathBuf {
+    PathBuf::from(env!("LBC_ROOT_DIR"))
+}
+
+#[must_use]
+pub fn prover() -> PathBuf {
+    lbc_root_dir().join(PROVER_BINARY)
+}
+
+#[must_use]
+pub fn verifier() -> PathBuf {
+    lbc_root_dir().join(VERIFIER_BINARY)
+}

rust/logos-blockchain-circuits-signature-sys/build.rs

@@ -1,3 +1,3 @@
 fn main() {
-    lbc_build::build("signature");
+    lbc_build::build_circuit("signature");
 }