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Make `process_functions_...` only accept `ItemFn`

This commit is contained in:
Martin Larralde 2018-05-13 21:33:59 +02:00
parent b43b481980
commit bf550c3c1f
1 changed files with 28 additions and 33 deletions
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61
pyo3-derive-backend/src/module.rs
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@ -9,10 +9,9 @@ use utils;
/// Generates the function that is called by the python interpreter to initialize the native
/// module
pub fn py3_init(fnname: &syn::Ident, name: &String, doc: syn::Lit) -> Tokens {
pub fn py3_init(fnname: &syn::Ident, name: &syn::Ident, doc: syn::Lit) -> Tokens {
let m_name: syn::Ident = syn::parse_str(name.trim().as_ref()).unwrap();
let cb_name: syn::Ident = syn::parse_str(&format!("PyInit_{}", name.trim())).unwrap();
let cb_name: syn::Ident = syn::parse_str(&format!("PyInit_{}", name)).unwrap();
quote! {
#[no_mangle]
@ -27,7 +26,7 @@ pub fn py3_init(fnname: &syn::Ident, name: &String, doc: syn::Lit) -> Tokens {
static mut MODULE_DEF: pyo3::ffi::PyModuleDef = pyo3::ffi::PyModuleDef_INIT;
// We can't convert &'static str to *const c_char within a static initializer,
// so we'll do it here in the module initialization:
MODULE_DEF.m_name = concat!(stringify!(#m_name), "\0").as_ptr() as *const _;
MODULE_DEF.name = concat!(stringify!(#name), "\0").as_ptr() as *const _;
#[cfg(py_sys_config = "WITH_THREAD")]
pyo3::ffi::PyEval_InitThreads();
@ -58,9 +57,9 @@ pub fn py3_init(fnname: &syn::Ident, name: &String, doc: syn::Lit) -> Tokens {
}
}
pub fn py2_init(fnname: &syn::Ident, name: &String, doc: syn::Lit) -> Tokens {
let m_name: syn::Ident = syn::parse_str(name.trim().as_ref()).unwrap();
let cb_name: syn::Ident = syn::parse_str(&format!("PyInit_{}", name.trim())).unwrap();
pub fn py2_init(fnname: &syn::Ident, name: &syn::Ident, doc: syn::Lit) -> Tokens {
let cb_name: syn::Ident = syn::parse_str(&format!("PyInit_{}", name)).unwrap();
quote! {
#[no_mangle]
@ -72,7 +71,7 @@ pub fn py2_init(fnname: &syn::Ident, name: &String, doc: syn::Lit) -> Tokens {
pyo3::prepare_pyo3_library();
pyo3::ffi::PyEval_InitThreads();
let _name = concat!(stringify!(#m_name), "\0").as_ptr() as *const _;
let _name = concat!(stringify!(#name), "\0").as_ptr() as *const _;
let _pool = pyo3::GILPool::new();
let _py = pyo3::Python::assume_gil_acquired();
let _module = pyo3::ffi::Py_InitModule(_name, std::ptr::null_mut());
@ -97,33 +96,29 @@ pub fn py2_init(fnname: &syn::Ident, name: &String, doc: syn::Lit) -> Tokens {
}
/// Finds and takes care of the #[pyfn(...)] in #[modinit(...)]
pub fn process_functions_in_module(ast: &mut syn::Item) {
if let syn::Item::Fn(ref mut func) = ast {
let mut stmts: Vec<syn::Stmt> = Vec::new();
pub fn process_functions_in_module(func: &mut syn::ItemFn) {
let mut stmts: Vec<syn::Stmt> = Vec::new();
for stmt in func.block.stmts.iter_mut() {
if let syn::Stmt::Item(syn::Item::Fn(ref mut func)) = stmt {
if let Some((module_name, python_name, pyfn_attrs)) =
extract_pyfn_attrs(&mut func.attrs)
{
let function_to_python = add_fn_to_module(func, &python_name, pyfn_attrs);
let function_wrapper_ident = function_wrapper_ident(&func.ident);
let item: syn::ItemFn = parse_quote!{
fn block_wrapper() {
#function_to_python
#module_name.add_function(&#function_wrapper_ident);
}
};
stmts.extend(item.block.stmts.into_iter());
}
};
stmts.push(stmt.clone());
}
func.block.stmts = stmts;
} else {
panic!("#[modinit] can only be used with fn block");
for stmt in func.block.stmts.iter_mut() {
if let syn::Stmt::Item(syn::Item::Fn(ref mut func)) = stmt {
if let Some((module_name, python_name, pyfn_attrs)) =
extract_pyfn_attrs(&mut func.attrs)
{
let function_to_python = add_fn_to_module(func, &python_name, pyfn_attrs);
let function_wrapper_ident = function_wrapper_ident(&func.ident);
let item: syn::ItemFn = parse_quote!{
fn block_wrapper() {
#function_to_python
#module_name.add_function(&#function_wrapper_ident);
}
};
stmts.extend(item.block.stmts.into_iter());
}
};
stmts.push(stmt.clone());
}
func.block.stmts = stmts;
}
/// Transforms a rust fn arg parsed with syn into a method::FnArg