gccjit/
object.rs

1use context::Context;
2use std::marker::PhantomData;
3use std::fmt;
4use std::ffi::CStr;
5use std::str;
6
7use crate::context;
8
9/// Object represents the root of all objects in gccjit. It is not useful
10/// in and of itself, but it provides the implementation for Debug
11/// used by most objects in this library.
12#[derive(Copy, Clone)]
13pub struct Object<'ctx> {
14    marker: PhantomData<&'ctx Context<'ctx>>,
15    ptr: *mut gccjit_sys::gcc_jit_object
16}
17
18impl<'ctx> fmt::Debug for Object<'ctx> {
19    fn fmt<'a>(&self, fmt: &mut fmt::Formatter<'a>) -> Result<(), fmt::Error> {
20        unsafe {
21            let ptr = gccjit_sys::gcc_jit_object_get_debug_string(self.ptr);
22            let cstr = CStr::from_ptr(ptr);
23            let rust_str = str::from_utf8_unchecked(cstr.to_bytes());
24            fmt.write_str(rust_str)
25        }
26    }
27}
28
29use std::mem::ManuallyDrop;
30use std::ops::Deref;
31
32#[derive(Debug)]
33pub struct ContextRef<'ctx> {
34    context: ManuallyDrop<Context<'ctx>>,
35}
36
37impl<'ctx> Deref for ContextRef<'ctx> {
38    type Target = Context<'ctx>;
39
40    fn deref(&self) -> &Self::Target {
41        &self.context
42    }
43}
44
45impl<'ctx> Object<'ctx> {
46    pub fn get_context(&self) -> ContextRef<'ctx> {
47        unsafe {
48            ContextRef {
49                context: ManuallyDrop::new(context::from_ptr(gccjit_sys::gcc_jit_object_get_context(self.ptr))),
50            }
51        }
52    }
53}
54
55/// ToObject is a trait implemented by types that can be upcast to Object.
56pub trait ToObject<'ctx> {
57    fn to_object(&self) -> Object<'ctx>;
58}
59
60impl<'ctx> ToObject<'ctx> for Object<'ctx> {
61    fn to_object(&self) -> Object<'ctx> {
62        unsafe { from_ptr(self.ptr) }
63    }
64}
65
66pub unsafe fn from_ptr<'ctx>(ptr: *mut gccjit_sys::gcc_jit_object) -> Object<'ctx> {
67    Object {
68        marker: PhantomData,
69        ptr
70    }
71}
72
73pub unsafe fn get_ptr<'ctx>(object: &Object<'ctx>) -> *mut gccjit_sys::gcc_jit_object {
74    object.ptr
75}
76
77
gccjit/object.rs

gccjit/
object.rs
