From 8558d41cd8d589a881a9b85a582831e7a5f66768 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Fri, 18 Dec 2020 10:09:35 +0800
Subject: [PATCH] pyo3 demo

---
 Cargo.lock                   | 142 +++++++++++++++++++++++++++++++++++
 Cargo.toml                   |   1 +
 nac3embedded/Cargo.toml      |  13 ++++
 nac3embedded/nac3embedded.so |   1 +
 nac3embedded/src/lib.rs      |  14 ++++
 5 files changed, 171 insertions(+)
 create mode 100644 nac3embedded/Cargo.toml
 create mode 120000 nac3embedded/nac3embedded.so
 create mode 100644 nac3embedded/src/lib.rs

diff --git a/Cargo.lock b/Cargo.lock
index f24e0a8..19236dd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -147,6 +147,16 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "ctor"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fbaabec2c953050352311293be5c6aba8e141ba19d6811862b232d6fd020484"
+dependencies = [
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "diff"
 version = "0.1.12"
@@ -232,6 +242,17 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "ghost"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a5bcf1bbeab73aa4cf2fde60a846858dc036163c7c33bec309f8d17de785479"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.9.1"
@@ -257,6 +278,29 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "indoc"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47741a8bc60fb26eb8d6e0238bbb26d8575ff623fdc97b1a2c00c050b9684ed8"
+dependencies = [
+ "indoc-impl",
+ "proc-macro-hack",
+]
+
+[[package]]
+name = "indoc-impl"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce046d161f000fffde5f432a0d034d0341dc152643b2598ed5bfce44c4f3a8f0"
+dependencies = [
+ "proc-macro-hack",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "unindent",
+]
+
 [[package]]
 name = "inkwell"
 version = "0.1.0"
@@ -290,6 +334,28 @@ dependencies = [
  "cfg-if 1.0.0",
 ]
 
+[[package]]
+name = "inventory"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f0f7efb804ec95e33db9ad49e4252f049e37e8b0a4652e3cd61f7999f2eff7f"
+dependencies = [
+ "ctor",
+ "ghost",
+ "inventory-impl",
+]
+
+[[package]]
+name = "inventory-impl"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75c094e94816723ab936484666968f5b58060492e880f3c8d00489a1e244fa51"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "itertools"
 version = "0.9.0"
@@ -389,6 +455,13 @@ version = "2.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
 
+[[package]]
+name = "nac3embedded"
+version = "0.1.0"
+dependencies = [
+ "pyo3",
+]
+
 [[package]]
 name = "nac3standalone"
 version = "0.1.0"
@@ -471,6 +544,25 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "paste"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45ca20c77d80be666aef2b45486da86238fabe33e38306bd3118fe4af33fa880"
+dependencies = [
+ "paste-impl",
+ "proc-macro-hack",
+]
+
+[[package]]
+name = "paste-impl"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d95a7db200b97ef370c8e6de0088252f7e0dfff7d047a28528e47456c0fc98b6"
+dependencies = [
+ "proc-macro-hack",
+]
+
 [[package]]
 name = "petgraph"
 version = "0.5.1"
@@ -496,6 +588,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 
+[[package]]
+name = "proc-macro-hack"
+version = "0.5.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.24"
@@ -505,6 +603,44 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "pyo3"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf6bbbe8f70d179260b3728e5d04eb012f4f0c7988e58c11433dd689cecaa72e"
+dependencies = [
+ "ctor",
+ "indoc",
+ "inventory",
+ "libc",
+ "parking_lot",
+ "paste",
+ "pyo3cls",
+ "unindent",
+]
+
+[[package]]
+name = "pyo3-derive-backend"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10ecd0eb6ed7b3d9965b4f4370b5b9e99e3e5e8742000e1c452c018f8c2a322f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "pyo3cls"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d344fdaa6a834a06dd1720ff104ea12fe101dad2e8db89345af9db74c0bb11a0"
+dependencies = [
+ "pyo3-derive-backend",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.7"
@@ -770,6 +906,12 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "87d6678d7916394abad0d4b19df4d3802e1fd84abd7d701f39b75ee71b9e8cf1"
 
+[[package]]
+name = "unindent"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f14ee04d9415b52b3aeab06258a3f07093182b88ba0f9b8d203f211a7a7d41c7"
+
 [[package]]
 name = "wasi"
 version = "0.9.0+wasi-snapshot-preview1"
diff --git a/Cargo.toml b/Cargo.toml
index 8e5c931..5e2d91d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,4 +2,5 @@
 members = [
   "libnac3",
   "nac3standalone",
+  "nac3embedded",
 ]
diff --git a/nac3embedded/Cargo.toml b/nac3embedded/Cargo.toml
new file mode 100644
index 0000000..230d0d9
--- /dev/null
+++ b/nac3embedded/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "nac3embedded"
+version = "0.1.0"
+authors = ["M-Labs"]
+edition = "2018"
+
+[lib]
+name = "nac3embedded"
+crate-type = ["cdylib"]
+
+[dependencies.pyo3]
+version = "0.12.4"
+features = ["extension-module"]
diff --git a/nac3embedded/nac3embedded.so b/nac3embedded/nac3embedded.so
new file mode 120000
index 0000000..9459220
--- /dev/null
+++ b/nac3embedded/nac3embedded.so
@@ -0,0 +1 @@
+../target/release/libnac3embedded.so
\ No newline at end of file
diff --git a/nac3embedded/src/lib.rs b/nac3embedded/src/lib.rs
new file mode 100644
index 0000000..c0e864d
--- /dev/null
+++ b/nac3embedded/src/lib.rs
@@ -0,0 +1,14 @@
+use pyo3::prelude::*;
+use pyo3::wrap_pyfunction;
+
+#[pyfunction]
+fn sum_as_string(a: usize, b: usize) -> PyResult<String> {
+    Ok((a + b).to_string())
+}
+
+#[pymodule]
+fn nac3embedded(py: Python, m: &PyModule) -> PyResult<()> {
+    m.add_function(wrap_pyfunction!(sum_as_string, m)?)?;
+
+    Ok(())
+}