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
use std::cell::RefCell;
lazy_static::lazy_static! {
pub static ref DEBUG_ENABLED: bool = {
use std::env;
env::var("CHALK_DEBUG")
.ok()
.and_then(|s| s.parse::<u32>().ok())
.map(|x| x >= 2)
.unwrap_or(false)
};
pub static ref INFO_ENABLED: bool = {
use std::env;
env::var("CHALK_DEBUG")
.ok()
.and_then(|s| s.parse::<u32>().ok())
.map(|x| x >= 1)
.unwrap_or(false)
};
}
thread_local! {
pub(crate) static INDENT: RefCell<Vec<String>> = RefCell::new(vec![]);
}
const OVERFLOW_DEPTH: usize = 100;
#[macro_export]
macro_rules! debug {
($($t:tt)*) => {
if *$crate::debug_macros::DEBUG_ENABLED {
$crate::debug_macros::dump(&format!($($t)*), "");
}
}
}
#[macro_export]
macro_rules! debug_heading {
($($t:tt)*) => {
let _ = &if *$crate::debug_macros::DEBUG_ENABLED {
let string = format!($($t)*);
$crate::debug_macros::dump(&string, " {");
$crate::debug_macros::Indent::new(true, string)
} else {
$crate::debug_macros::Indent::new(false, String::new())
};
}
}
#[macro_export]
macro_rules! info {
($($t:tt)*) => {
if *$crate::debug_macros::INFO_ENABLED {
$crate::debug_macros::dump(&format!($($t)*), "");
}
}
}
#[macro_export]
macro_rules! info_heading {
($($t:tt)*) => {
let _ = &if *$crate::debug_macros::INFO_ENABLED {
let string = format!($($t)*);
$crate::debug_macros::dump(&string, " {");
$crate::debug_macros::Indent::new(true, string)
} else {
$crate::debug_macros::Indent::new(false, String::new())
};
}
}
pub fn dump(string: &str, suffix: &str) {
let indent = INDENT.with(|i| i.borrow().len());
let mut first = true;
for line in string.lines() {
if first {
for _ in 0..indent {
eprint!(": ");
}
eprint!("| ");
} else {
eprintln!();
for _ in 0..indent {
eprint!(": ");
}
eprint!(": ");
}
eprint!("{}", line);
first = false;
}
eprintln!("{}", suffix);
}
pub struct Indent {
enabled: bool,
}
impl Indent {
pub fn new(enabled: bool, value: String) -> Self {
if enabled {
INDENT.with(|i| {
i.borrow_mut().push(value);
if i.borrow().len() > OVERFLOW_DEPTH {
eprintln!("CHALK_DEBUG OVERFLOW:");
for v in i.borrow().iter().rev() {
eprintln!("- {}", v);
}
panic!("CHALK_DEBUG OVERFLOW")
}
});
}
Indent { enabled }
}
}
impl Drop for Indent {
fn drop(&mut self) {
if self.enabled {
INDENT.with(|i| i.borrow_mut().pop().unwrap());
dump("}", "");
}
}
}