mashin_core 0.1.4

The core of mashin, consumed by the runtime engine
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

/* -------------------------------------------------------- *\
 *                                                          *
 *      ███╗░░░███╗░█████╗░░██████╗██╗░░██╗██╗███╗░░██╗     *
 *      ████╗░████║██╔══██╗██╔════╝██║░░██║██║████╗░██║     *
 *      ██╔████╔██║███████║╚█████╗░███████║██║██╔██╗██║     *
 *      ██║╚██╔╝██║██╔══██║░╚═══██╗██╔══██║██║██║╚████║     *
 *      ██║░╚═╝░██║██║░░██║██████╔╝██║░░██║██║██║░╚███║     *
 *      ╚═╝░░░░░╚═╝╚═╝░░╚═╝╚═════╝░╚═╝░░╚═╝╚═╝╚═╝░░╚══╝     *
 *                                         by Nutshimit     *
 * -------------------------------------------------------- *
 *                                                          *
 *   This file is dual-licensed as Apache-2.0 or GPL-3.0.   *
 *   see LICENSE for license details.                       *
 *                                                          *
\* ---------------------------------------------------------*/

use crate::NativeType;
use libffi::middle::Arg;
use std::ffi::c_void;

/// Intermediate format for easy translation from NativeType + V8 value
/// to libffi argument types.
#[repr(C)]
pub union NativeValue {
	pub void_value: (),
	pub bool_value: bool,
	pub u8_value: u8,
	pub i8_value: i8,
	pub u16_value: u16,
	pub i16_value: i16,
	pub u32_value: u32,
	pub i32_value: i32,
	pub u64_value: u64,
	pub i64_value: i64,
	pub usize_value: usize,
	pub isize_value: isize,
	pub f32_value: f32,
	pub f64_value: f64,
	pub pointer: *mut c_void,
}

impl NativeValue {
	/// # Safety
	pub unsafe fn as_arg(&self, native_type: &NativeType) -> Arg {
		match native_type {
			NativeType::Void => unreachable!(),
			NativeType::Bool => Arg::new(&self.bool_value),
			NativeType::U8 => Arg::new(&self.u8_value),
			NativeType::I8 => Arg::new(&self.i8_value),
			NativeType::U16 => Arg::new(&self.u16_value),
			NativeType::I16 => Arg::new(&self.i16_value),
			NativeType::U32 => Arg::new(&self.u32_value),
			NativeType::I32 => Arg::new(&self.i32_value),
			NativeType::U64 => Arg::new(&self.u64_value),
			NativeType::I64 => Arg::new(&self.i64_value),
			NativeType::USize => Arg::new(&self.usize_value),
			NativeType::ISize => Arg::new(&self.isize_value),
			NativeType::F32 => Arg::new(&self.f32_value),
			NativeType::F64 => Arg::new(&self.f64_value),
			NativeType::Pointer | NativeType::Buffer | NativeType::Function =>
				Arg::new(&self.pointer),
			NativeType::Struct(_) => Arg::new(&*self.pointer),
		}
	}
}

// SAFETY: unsafe trait must have unsafe implementation
unsafe impl Send for NativeValue {}