1 files changed, 202 insertions, 0 deletions
diff --git a/third_party/rust/gl_generator/registry/mod.rs b/third_party/rust/gl_generator/registry/mod.rs
new file mode 100644
index 0000000000..385b2dfea1
--- /dev/null
+++ b/third_party/rust/gl_generator/registry/mod.rs
@@ -0,0 +1,202 @@
+// 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
+//
+//     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.
+
+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);
+    }
+}