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// Tagua VM
//
//
// New BSD License
//
// Copyright © 2016-2016, Ivan Enderlin.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the Hoa nor the names of its contributors may be
//       used to endorse or promote products derived from this software without
//       specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

//! Context manipulation.

use super::LLVMRef;

use llvm::core::{
    LLVMContextCreate,
    LLVMContextDispose
};
use llvm::prelude::LLVMContextRef;

#[derive(Debug)]
pub struct Context {
    context: LLVMContextRef,
    owned  : bool
}

impl Context {
    pub fn new() -> Context {
        Context {
            context: unsafe {
                LLVMContextCreate()
            },
            owned: true
        }
    }
}

impl Drop for Context {
    fn drop(&mut self) {
        if self.owned {
            unsafe {
                LLVMContextDispose(self.context);
            }
        }
    }
}

impl LLVMRef<LLVMContextRef> for Context {
    fn to_ref(&self) -> LLVMContextRef {
        self.context
    }
}


#[cfg(test)]
mod tests {
    use super::Context;

    #[test]
    fn case_ownership() {
        let context = Context::new();

        assert!(context.owned);
    }
}