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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
extern crate libc;
use libc::c_char;
use std::ffi::CStr;
#[allow(non_camel_case_types)]
pub type c_bool = u8;
pub trait Flag
{
fn zero() -> Self;
}
pub unsafe fn from_c_str(c_str: *const c_char) -> String
{
String::from_utf8_lossy(CStr::from_ptr(c_str as *const _).to_bytes()).into_owned()
}
#[macro_export]
macro_rules! if_ok
{
($e: expr) =>
{
if ($e).is_err()
{
return Err(());
}
}
}
#[macro_export]
macro_rules! opaque
{
($f: ident) =>
{
#[allow(missing_copy_implementations)]
pub enum $f
{
}
}
}
#[macro_export]
macro_rules! derive_copy_clone
{
($t: ty) =>
{
impl Copy for $t {}
impl Clone for $t
{
fn clone(&self) -> Self
{
*self
}
}
}
}
#[macro_export]
macro_rules! flag_type
{
($f: ident { $($n: ident = $v: expr),*}) =>
{
#[derive(Copy, Clone, Debug)]
pub struct $f
{
bits: u32
}
impl $f
{
#[inline]
pub fn get(&self) -> u32
{
self.bits
}
}
impl Flag for $f
{
fn zero() -> $f
{
$f{bits: 0}
}
}
impl ::std::ops::BitOr for $f
{
type Output = $f;
fn bitor(self, e: $f) -> $f
{
$f{bits: self.bits | e.bits}
}
}
impl ::std::ops::BitAnd for $f
{
type Output = bool;
fn bitand(self, e: $f) -> bool
{
self.bits & e.bits != 0
}
}
$(
pub const $n: $f = $f{bits: $v};
)+
}
}
#[macro_export]
macro_rules! flags
{
($f: ident { $($n: ident = $v: expr),*}) =>
{
$(
pub const $n: $f = $f{bits: $v};
)+
}
}
#[macro_export]
macro_rules! cast_to_c
{
($p:ident, f32) =>
{
$p as c_float
};
($p:ident, Color) =>
{
*$p
}
}