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// Copyright 2015 Brendan Zabarauskas and the gl-rs developers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use registry::Registry;
use std::io;
#[allow(missing_copy_implementations)]
pub struct StaticStructGenerator;
impl super::Generator for StaticStructGenerator {
fn write<W>(&self, registry: &Registry, dest: &mut W) -> io::Result<()>
where
W: io::Write,
{
try!(write_header(dest));
try!(write_type_aliases(registry, dest));
try!(write_enums(registry, dest));
try!(write_struct(registry, dest));
try!(write_impl(registry, dest));
try!(write_fns(registry, dest));
Ok(())
}
}
/// Creates a `__gl_imports` module which contains all the external symbols that we need for the
/// bindings.
fn write_header<W>(dest: &mut W) -> io::Result<()>
where
W: io::Write,
{
writeln!(
dest,
r#"
mod __gl_imports {{
pub use std::mem;
pub use std::os::raw;
}}
"#
)
}
/// Creates a `types` module which contains all the type aliases.
///
/// See also `generators::gen_types`.
fn write_type_aliases<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
where
W: io::Write,
{
try!(writeln!(
dest,
r#"
pub mod types {{
#![allow(non_camel_case_types, non_snake_case, dead_code, missing_copy_implementations)]
"#
));
try!(super::gen_types(registry.api, dest));
writeln!(dest, "}}")
}
/// Creates all the `<enum>` elements at the root of the bindings.
fn write_enums<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
where
W: io::Write,
{
for enm in ®istry.enums {
try!(super::gen_enum_item(enm, "types::", dest));
}
Ok(())
}
/// Creates a stub structure.
///
/// The name of the struct corresponds to the namespace.
fn write_struct<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
where
W: io::Write,
{
writeln!(
dest,
"
#[allow(non_camel_case_types, non_snake_case, dead_code)]
#[derive(Copy, Clone)]
pub struct {api};",
api = super::gen_struct_name(registry.api),
)
}
/// Creates the `impl` of the structure created by `write_struct`.
fn write_impl<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
where
W: io::Write,
{
try!(writeln!(dest,
"impl {api} {{
/// Stub function.
#[allow(dead_code)]
pub fn load_with<F>(mut _loadfn: F) -> {api} where F: FnMut(&'static str) -> *const __gl_imports::raw::c_void {{
{api}
}}",
api = super::gen_struct_name(registry.api),
));
for cmd in ®istry.cmds {
try!(writeln!(
dest,
"#[allow(non_snake_case)]
// #[allow(unused_variables)]
#[allow(dead_code)]
#[inline]
pub unsafe fn {name}(&self, {typed_params}) -> {return_suffix} {{
{name}({idents})
}}",
name = cmd.proto.ident,
typed_params = super::gen_parameters(cmd, true, true).join(", "),
return_suffix = cmd.proto.ty,
idents = super::gen_parameters(cmd, true, false).join(", "),
));
}
writeln!(dest, "}}")
}
/// io::Writes all functions corresponding to the GL bindings.
///
/// These are foreign functions, they don't have any content.
fn write_fns<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
where
W: io::Write,
{
try!(writeln!(
dest,
"
#[allow(non_snake_case)]
#[allow(unused_variables)]
#[allow(dead_code)]
extern \"system\" {{"
));
for cmd in ®istry.cmds {
try!(writeln!(
dest,
"#[link_name=\"{symbol}\"] fn {name}({params}) -> {return_suffix};",
symbol = super::gen_symbol_name(registry.api, &cmd.proto.ident),
name = cmd.proto.ident,
params = super::gen_parameters(cmd, true, true).join(", "),
return_suffix = cmd.proto.ty,
));
}
writeln!(dest, "}}")
}
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