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// Copyright 2015-2016 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
//
//
// 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.
extern crate khronos_api;
use std::borrow::Cow;
use std::collections::{BTreeMap, BTreeSet};
use std::fmt;
use std::hash::{Hash, Hasher};
use std::io;
use std::ops::{Add, AddAssign};
use Generator;
mod parse;
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum Api {
Gl,
Glx,
Wgl,
Egl,
GlCore,
Gles1,
Gles2,
Glsc2,
}
impl fmt::Display for Api {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
match *self {
Api::Gl => write!(fmt, "gl"),
Api::Glx => write!(fmt, "glx"),
Api::Wgl => write!(fmt, "wgl"),
Api::Egl => write!(fmt, "egl"),
Api::GlCore => write!(fmt, "glcore"),
Api::Gles1 => write!(fmt, "gles1"),
Api::Gles2 => write!(fmt, "gles2"),
Api::Glsc2 => write!(fmt, "glsc2"),
}
}
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum Fallbacks {
All,
None,
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum Profile {
Core,
Compatibility,
}
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Enum {
pub ident: String,
pub value: String,
pub cast: bool,
pub alias: Option<String>,
pub ty: Cow<'static, str>,
}
impl Hash for Enum {
fn hash<H: Hasher>(&self, state: &mut H) {
self.ident.hash(state);
}
}
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Binding {
pub ident: String,
pub ty: Cow<'static, str>,
pub group: Option<String>,
}
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Group {
pub ident: String,
pub enums_type: Option<String>,
pub enums: Vec<String>,
}
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Cmd {
pub proto: Binding,
pub params: Vec<Binding>,
pub alias: Option<String>,
pub vecequiv: Option<String>,
pub glx: Option<GlxOpcode>,
}
impl Hash for Cmd {
fn hash<H: Hasher>(&self, state: &mut H) {
self.proto.ident.hash(state);
}
}
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct GlxOpcode {
pub opcode: String,
pub name: Option<String>,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Registry {
pub api: Api,
pub enums: BTreeSet<Enum>,
pub cmds: BTreeSet<Cmd>,
pub aliases: BTreeMap<String, Vec<String>>,
pub groups: BTreeMap<String, Group>,
}
impl Registry {
pub fn new<'a, Exts>(
api: Api,
version: (u8, u8),
profile: Profile,
fallbacks: Fallbacks,
extensions: Exts,
) -> Registry
where
Exts: AsRef<[&'a str]>,
{
let (major, minor) = version;
let extensions = extensions.as_ref().iter().map(<&str>::to_string).collect();
let filter = parse::Filter {
api,
fallbacks,
extensions,
version: format!("{}.{}", major, minor),
profile,
};
let src = match api {
Api::Gl | Api::GlCore | Api::Gles1 | Api::Gles2 | Api::Glsc2 => khronos_api::GL_XML,
Api::Glx => khronos_api::GLX_XML,
Api::Wgl => khronos_api::WGL_XML,
Api::Egl => khronos_api::EGL_XML,
};
let mut registry = parse::from_xml(src, &filter, true);
if filter.extensions.iter().any(|e| e.starts_with("GL_ANGLE_")) {
registry += parse::from_xml(khronos_api::GL_ANGLE_EXT_XML, &filter, false);
}
if filter.extensions.iter().any(|e| e.starts_with("EGL_ANGLE_")) {
registry += parse::from_xml(khronos_api::EGL_ANGLE_EXT_XML, &filter, false);
}
registry
}
pub fn write_bindings<W, G>(&self, generator: G, output: &mut W) -> io::Result<()>
where
G: Generator,
W: io::Write,
{
generator.write(&self, output)
}
/// Returns a set of all the types used in the supplied registry. This is useful
/// for working out what conversions are needed for the specific registry.
pub fn get_tys(&self) -> BTreeSet<&str> {
let mut tys = BTreeSet::new();
for def in &self.cmds {
tys.insert(def.proto.ty.as_ref());
for param in &def.params {
tys.insert(param.ty.as_ref());
}
}
tys
}
}
impl Add for Registry {
type Output = Registry;
fn add(mut self, other: Registry) -> Registry {
self += other;
self
}
}
impl AddAssign for Registry {
fn add_assign(&mut self, other: Self) {
self.enums.extend(other.enums);
self.cmds.extend(other.cmds);
self.aliases.extend(other.aliases);
}
}