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