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|
use super::*;
/// Generates standalone Windows bindings.
pub fn standalone(names: &[&str]) -> String {
let files = &File::with_default(&[]).unwrap();
let reader = &Reader::new(files);
let gen = &mut Gen::new(reader);
standalone_imp(gen, names)
}
/// Generates standalone Windows bindings for the Rust Standard Library.
pub fn standalone_std(names: &[&str]) -> String {
let files = &File::with_default(&[]).unwrap();
let reader = &Reader::new(files);
let gen = &mut Gen::new(reader);
gen.std = true;
standalone_imp(gen, names)
}
fn standalone_imp(gen: &mut Gen, names: &[&str]) -> String {
gen.namespace = "Windows.";
gen.standalone = true;
gen.sys = true;
let mut type_names = BTreeSet::new();
let mut core_types = BTreeSet::new();
let mut enums = BTreeSet::new();
for name in names {
let type_name = TypeName::parse(name);
let mut found = false;
if let Some(def) = gen.reader.get(type_name).next() {
found = true;
type_names.insert(type_name);
let mut cfg = gen.reader.type_def_cfg(def, &[]);
core_types.append(&mut cfg.core_types);
for def in cfg.types.values().flatten() {
type_names.insert(gen.reader.type_def_type_name(*def));
}
if gen.reader.type_def_kind(def) == TypeKind::Struct
&& gen.reader.type_def_fields(def).next().is_none()
&& gen.reader.type_def_guid(def).is_some()
{
core_types.insert(Type::GUID);
}
}
if !found {
for method in gen.reader.namespace_functions(type_name.namespace) {
if found {
break;
}
let name = gen.reader.method_def_name(method);
if name == type_name.name {
found = true;
type_names.insert(type_name);
let mut cfg = gen
.reader
.signature_cfg(&gen.reader.method_def_signature(method, &[]));
core_types.append(&mut cfg.core_types);
for def in cfg.types.values().flatten() {
type_names.insert(gen.reader.type_def_type_name(*def));
}
}
}
for field in gen.reader.namespace_constants(type_name.namespace) {
if found {
break;
}
let name = gen.reader.field_name(field);
if name == type_name.name {
found = true;
type_names.insert(type_name);
let mut cfg = gen.reader.field_cfg(field);
core_types.append(&mut cfg.core_types);
for def in cfg.types.values().flatten() {
type_names.insert(gen.reader.type_def_type_name(*def));
}
}
}
}
if !found {
for def in gen
.reader
.namespace_types(type_name.namespace, &Default::default())
{
if found {
break;
}
if gen.reader.type_def_kind(def) == TypeKind::Enum {
for field in gen.reader.type_def_fields(def) {
if found {
break;
}
let name = gen.reader.field_name(field);
if name == type_name.name {
found = true;
let enum_name = gen.reader.type_def_type_name(def);
type_names.insert(enum_name);
enums.insert((enum_name, type_name.name));
}
}
}
}
}
}
let mut sorted = SortedTokens::default();
for ty in core_types {
match ty {
Type::HRESULT => sorted.insert("HRESULT", quote! { pub type HRESULT = i32; }),
Type::String => sorted.insert(
"HSTRING",
quote! { pub type HSTRING = *mut ::core::ffi::c_void; },
),
Type::IUnknown => sorted.insert(
"IUnknown",
quote! { pub type IUnknown = *mut ::core::ffi::c_void; },
),
Type::IInspectable => sorted.insert(
"IInspectable",
quote! { pub type IInspectable = *mut ::core::ffi::c_void; },
),
Type::PSTR => sorted.insert("PSTR", quote! { pub type PSTR = *mut u8; }),
Type::PWSTR => sorted.insert("PWSTR", quote! { pub type PWSTR = *mut u16; }),
Type::PCSTR => sorted.insert("PCSTR", quote! { pub type PCSTR = *const u8; }),
Type::PCWSTR => sorted.insert("PCWSTR", quote! { pub type PCWSTR = *const u16; }),
Type::BSTR => sorted.insert("BSTR", quote! { pub type BSTR = *const u16; }),
Type::GUID => {
sorted.insert("GUID", quote! {
#[repr(C)]
pub struct GUID {
pub data1: u32,
pub data2: u16,
pub data3: u16,
pub data4: [u8; 8],
}
impl GUID {
pub const fn from_u128(uuid: u128) -> Self {
Self { data1: (uuid >> 96) as u32, data2: (uuid >> 80 & 0xffff) as u16, data3: (uuid >> 64 & 0xffff) as u16, data4: (uuid as u64).to_be_bytes() }
}
}
impl ::core::marker::Copy for GUID {}
impl ::core::clone::Clone for GUID {
fn clone(&self) -> Self {
*self
}
}
});
}
_ => {}
}
}
for type_name in type_names {
let mut found = false;
for def in gen.reader.get(type_name) {
found = true;
let kind = gen.reader.type_def_kind(def);
match kind {
TypeKind::Class | TypeKind::Interface => unimplemented!(),
TypeKind::Enum => {
sorted.insert(gen.reader.type_def_name(def), enums::gen(gen, def));
}
TypeKind::Struct => {
if gen.reader.type_def_fields(def).next().is_none() {
if let Some(guid) = gen.reader.type_def_guid(def) {
let ident = to_ident(type_name.name);
let value = gen.guid(&guid);
let guid = gen.type_name(&Type::GUID);
sorted.insert(
type_name.name,
quote! {
pub const #ident: #guid = #value;
},
);
continue;
}
}
sorted.insert(gen.reader.type_def_name(def), structs::gen(gen, def));
}
TypeKind::Delegate => {
sorted.insert(gen.reader.type_def_name(def), delegates::gen(gen, def));
}
}
}
if !found {
for method in gen.reader.namespace_functions(type_name.namespace) {
if found {
break;
}
let name = gen.reader.method_def_name(method);
if name == type_name.name {
found = true;
sorted.insert(
&format!(".{}.{name}", gen.reader.method_def_module_name(method)),
functions::gen(gen, method),
);
}
}
for field in gen.reader.namespace_constants(type_name.namespace) {
if found {
break;
}
let name = gen.reader.field_name(field);
if name == type_name.name {
found = true;
sorted.insert(name, constants::gen(gen, field));
}
}
}
}
for (enum_type, field_name) in enums {
if let Some(def) = gen.reader.get(enum_type).next() {
for field in gen.reader.type_def_fields(def) {
if gen.reader.field_name(field) == field_name {
let ident = to_ident(field_name);
let ty = to_ident(enum_type.name);
let constant = gen.reader.field_constant(field).unwrap();
let value = gen.value(&gen.reader.constant_value(constant));
sorted.insert(
field_name,
quote! {
pub const #ident: #ty = #value;
},
);
break;
}
}
}
}
let mut tokens: TokenStream = format!(
r#"// Bindings generated by `windows-bindgen` {}
"#,
std::env!("CARGO_PKG_VERSION")
)
.into();
tokens.combine(&allow());
for value in sorted.0.values() {
tokens.combine(value);
}
try_format(tokens.into_string())
}
#[derive(Default)]
struct SortedTokens(BTreeMap<String, TokenStream>);
impl SortedTokens {
fn insert(&mut self, key: &str, tokens: TokenStream) {
self.0.entry(key.to_string()).or_default().combine(&tokens);
}
}
|
