From 58906e218be8fc90c95974d978f7c9f997b29c5a Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Wed, 13 Mar 2019 13:41:04 +0100
Subject: [PATCH] Add basic Rust bindings

---
 .bumpversion.cfg         |  3 +++
 bindings/rust/.gitignore |  3 +++
 bindings/rust/Cargo.toml | 12 ++++++++++++
 bindings/rust/build.rs   | 25 +++++++++++++++++++++++++
 bindings/rust/evmc.h     |  1 +
 bindings/rust/src/lib.rs |  5 +++++
 6 files changed, 49 insertions(+)
 create mode 100644 bindings/rust/.gitignore
 create mode 100644 bindings/rust/Cargo.toml
 create mode 100644 bindings/rust/build.rs
 create mode 120000 bindings/rust/evmc.h
 create mode 100644 bindings/rust/src/lib.rs

diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 7618cbc..65d6585 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -24,3 +24,6 @@ serialize = {major}
 search = EVMC_ABI_VERSION = {current_version}
 replace = EVMC_ABI_VERSION = {new_version}
 
+[bumpversion:file:bindings/rust/Cargo.toml]
+search = version = \"{current_version}\"
+
diff --git a/bindings/rust/.gitignore b/bindings/rust/.gitignore
new file mode 100644
index 0000000..84c47ed
--- /dev/null
+++ b/bindings/rust/.gitignore
@@ -0,0 +1,3 @@
+/target
+**/*.rs.bk
+/Cargo.lock
diff --git a/bindings/rust/Cargo.toml b/bindings/rust/Cargo.toml
new file mode 100644
index 0000000..a5daa8e
--- /dev/null
+++ b/bindings/rust/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "evmc-sys"
+version = "6.2.0-dev"
+authors = ["Alex Beregszaszi <alex@rtfs.hu>"]
+license = "Apache-2.0"
+repository = "https://github.com/ethereum/evmc"
+description = "Bindings to EVMC (low-level)"
+categories = ["external-ffi-bindings"]
+edition = "2018"
+
+[build-dependencies]
+bindgen = "0.48.0"
diff --git a/bindings/rust/build.rs b/bindings/rust/build.rs
new file mode 100644
index 0000000..3591589
--- /dev/null
+++ b/bindings/rust/build.rs
@@ -0,0 +1,25 @@
+extern crate bindgen;
+
+use std::env;
+use std::path::PathBuf;
+
+fn gen_bindings() {
+    let bindings = bindgen::Builder::default()
+        .header("evmc.h")
+        // See https://github.com/rust-lang-nursery/rust-bindgen/issues/947
+        .trust_clang_mangling(false)
+        .generate_comments(true)
+        // https://github.com/rust-lang-nursery/rust-bindgen/issues/947#issuecomment-327100002
+        .layout_tests(false)
+        .generate()
+        .expect("Unable to generate bindings");
+
+    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+    bindings
+        .write_to_file(out_path.join("bindings.rs"))
+        .expect("Couldn't write bindings!");
+}
+
+fn main() {
+    gen_bindings();
+}
diff --git a/bindings/rust/evmc.h b/bindings/rust/evmc.h
new file mode 120000
index 0000000..32ffe53
--- /dev/null
+++ b/bindings/rust/evmc.h
@@ -0,0 +1 @@
+../../include/evmc/evmc.h
\ No newline at end of file
diff --git a/bindings/rust/src/lib.rs b/bindings/rust/src/lib.rs
new file mode 100644
index 0000000..a38a13a
--- /dev/null
+++ b/bindings/rust/src/lib.rs
@@ -0,0 +1,5 @@
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+
+include!(concat!(env!("OUT_DIR"), "/bindings.rs"));