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Remove some old-syn clutter

This commit is contained in:
konstin 2018-07-04 19:07:27 +02:00
parent bc412ede8f
commit 1201587353
3 changed files with 29 additions and 39 deletions
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2
pyo3-derive-backend/src/module.rs
View File

@ -207,7 +207,7 @@ fn function_wrapper_ident(name: &syn::Ident) -> syn::Ident {
/// Generates python wrapper over a function that allows adding it to a python module as a python
/// function
pub fn add_fn_to_module(
func: &mut syn::ItemFn,
func: &syn::ItemFn,
python_name: &syn::Ident,
pyfn_attrs: Vec<args::Argument>,
) -> TokenStream {

64
pyo3-derive-backend/src/py_class.rs
View File

@ -1,45 +1,35 @@
// Copyright (c) 2017-present PyO3 Project and Contributors
use std::collections::HashMap;
use syn;
use method::{FnArg, FnSpec, FnType};
use proc_macro2::{Span, TokenStream};
use py_method::{impl_py_getter_def, impl_py_setter_def, impl_wrap_getter, impl_wrap_setter};
use std::collections::HashMap;
use syn;
use utils;
pub fn build_py_class(ast: &mut syn::DeriveInput, attr: &Vec<syn::Expr>) -> TokenStream {
pub fn build_py_class(class: &mut syn::ItemStruct, attr: &Vec<syn::Expr>) -> TokenStream {
let (params, flags, base) = parse_attribute(attr);
let doc = utils::get_doc(&ast.attrs, true);
let doc = utils::get_doc(&class.attrs, true);
let mut token: Option<syn::Ident> = None;
let mut descriptors = Vec::new();
if let syn::Data::Struct(ref mut struc) = ast.data {
if let syn::Fields::Named(ref mut fields) = struc.fields {
for field in fields.named.iter_mut() {
if is_python_token(field) {
token = field.ident.clone();
break;
} else {
let field_descs = parse_descriptors(field);
if !field_descs.is_empty() {
descriptors.push((field.clone(), field_descs));
}
if let syn::Fields::Named(ref mut fields) = class.fields {
for field in fields.named.iter_mut() {
if is_python_token(field) {
token = field.ident.clone();
break;
} else {
let field_descs = parse_descriptors(field);
if !field_descs.is_empty() {
descriptors.push((field.clone(), field_descs));
}
}
} else {
panic!("#[class] can only be used with C-style structs")
}
} else {
panic!("#[class] can only be used with structs")
panic!("#[class] can only be used with C-style structs")
}
let tokens = impl_class(&ast.ident, &base, token, doc, params, flags, descriptors);
quote! {
#tokens
}
impl_class(&class.ident, &base, token, doc, params, flags, descriptors)
}
fn parse_descriptors(item: &mut syn::Field) -> Vec<FnType> {
@ -202,22 +192,22 @@ fn impl_class(
let mut has_dict = false;
for f in flags.iter() {
if let syn::Expr::Path(ref epath) = f {
if epath.path == parse_quote!{::pyo3::typeob::PY_TYPE_FLAG_WEAKREF} {
if epath.path == parse_quote! {::pyo3::typeob::PY_TYPE_FLAG_WEAKREF} {
has_weakref = true;
} else if epath.path == parse_quote!{::pyo3::typeob::PY_TYPE_FLAG_DICT} {
} else if epath.path == parse_quote! {::pyo3::typeob::PY_TYPE_FLAG_DICT} {
has_dict = true;
}
}
}
let weakref = if has_weakref {
quote!{std::mem::size_of::<*const ::pyo3::ffi::PyObject>()}
quote! {std::mem::size_of::<*const ::pyo3::ffi::PyObject>()}
} else {
quote!{0}
quote! {0}
};
let dict = if has_dict {
quote!{std::mem::size_of::<*const ::pyo3::ffi::PyObject>()}
quote! {std::mem::size_of::<*const ::pyo3::ffi::PyObject>()}
} else {
quote!{0}
quote! {0}
};
quote! {
@ -391,8 +381,8 @@ fn parse_attribute(
syn::TypePath,
) {
let mut params = HashMap::new();
let mut flags = vec![syn::Expr::Lit(parse_quote!{0})];
let mut base: syn::TypePath = parse_quote!{::pyo3::PyObjectRef};
let mut flags = vec![syn::Expr::Lit(parse_quote! {0})];
let mut base: syn::TypePath = parse_quote! {::pyo3::PyObjectRef};
for expr in args.iter() {
match expr {
@ -409,22 +399,22 @@ fn parse_attribute(
{
"gc" => {
flags.push(syn::Expr::Path(
parse_quote!{::pyo3::typeob::PY_TYPE_FLAG_GC},
parse_quote! {::pyo3::typeob::PY_TYPE_FLAG_GC},
));
}
"weakref" => {
flags.push(syn::Expr::Path(
parse_quote!{::pyo3::typeob::PY_TYPE_FLAG_WEAKREF},
parse_quote! {::pyo3::typeob::PY_TYPE_FLAG_WEAKREF},
));
}
"subclass" => {
flags.push(syn::Expr::Path(
parse_quote!{::pyo3::typeob::PY_TYPE_FLAG_BASETYPE},
parse_quote! {::pyo3::typeob::PY_TYPE_FLAG_BASETYPE},
));
}
"dict" => {
flags.push(syn::Expr::Path(
parse_quote!{::pyo3::typeob::PY_TYPE_FLAG_DICT},
parse_quote! {::pyo3::typeob::PY_TYPE_FLAG_DICT},
));
}
param => {

2
pyo3cls/src/lib.rs
View File

@ -88,7 +88,7 @@ pub fn class(
input: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
// Parse the token stream into a syntax tree
let mut ast: syn::DeriveInput = syn::parse(input).expect("#[class] must be used on a `struct`");
let mut ast: syn::ItemStruct = syn::parse(input).expect("#[class] must be used on a `struct`");
// Parse the macro arguments into a list of expressions
let args: Vec<syn::Expr> = {