cbindgen 0.6.0

A tool for generating C bindings to Rust code.
Documentation 
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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

use std::io::Write;

use syn;

use bindgen::config::Config;
use bindgen::declarationtyperesolver::DeclarationTypeResolver;
use bindgen::dependencies::Dependencies;
use bindgen::ir::{AnnotationSet, Cfg, Documentation, Item, ItemContainer, Type};
use bindgen::library::Library;
use bindgen::writer::{Source, SourceWriter};

#[derive(Debug, Clone)]
pub struct Static {
    pub name: String,
    pub ty: Type,
    pub mutable: bool,
    pub cfg: Option<Cfg>,
    pub annotations: AnnotationSet,
    pub documentation: Documentation,
}

impl Static {
    pub fn load(item: &syn::ItemStatic, mod_cfg: &Option<Cfg>) -> Result<Static, String> {
        let ty = Type::load(&item.ty)?;

        if ty.is_none() {
            return Err("Cannot have a zero sized static definition.".to_owned());
        }

        Ok(Static {
            name: item.ident.to_string(),
            ty: ty.unwrap(),
            mutable: item.mutability.is_some(),
            cfg: Cfg::append(mod_cfg, Cfg::load(&item.attrs)),
            annotations: AnnotationSet::load(&item.attrs)?,
            documentation: Documentation::load(&item.attrs),
        })
    }

    pub fn simplify_option_to_ptr(&mut self) {
        self.ty.simplify_option_to_ptr();
    }
}

impl Item for Static {
    fn name(&self) -> &str {
        &self.name
    }

    fn cfg(&self) -> &Option<Cfg> {
        &self.cfg
    }

    fn annotations(&self) -> &AnnotationSet {
        &self.annotations
    }

    fn annotations_mut(&mut self) -> &mut AnnotationSet {
        &mut self.annotations
    }

    fn container(&self) -> ItemContainer {
        ItemContainer::Static(self.clone())
    }

    fn rename_for_config(&mut self, config: &Config) {
        self.ty.rename_for_config(config);
    }

    fn resolve_declaration_types(&mut self, resolver: &DeclarationTypeResolver) {
        self.ty.resolve_declaration_types(resolver);
    }

    fn add_dependencies(&self, library: &Library, out: &mut Dependencies) {
        self.ty.add_dependencies(library, out);
    }
}

impl Source for Static {
    fn write<F: Write>(&self, config: &Config, out: &mut SourceWriter<F>) {
        out.write("extern ");
        if let Type::ConstPtr(..) = self.ty {
        } else {
            if !self.mutable {
                out.write("const ");
            }
        }
        self.ty.write(config, out);
        write!(out, " {};", self.name);
    }
}