boa_engine/vm/
runtime_limits.rs

1/// Represents the limits of different runtime operations.
2#[derive(Debug, Clone, Copy)]
3pub struct RuntimeLimits {
4    /// Max stack size before an error is thrown.
5    stack_size: usize,
6
7    /// Max loop iterations before an error is thrown.
8    loop_iteration: u64,
9
10    /// Max backtrace count in exception.
11    backtrace_limit: usize,
12
13    /// Max function recursion limit
14    resursion: usize,
15}
16
17impl Default for RuntimeLimits {
18    #[inline]
19    fn default() -> Self {
20        Self {
21            loop_iteration: u64::MAX,
22            resursion: 512,
23            backtrace_limit: 50,
24            stack_size: 1024 * 10,
25        }
26    }
27}
28
29impl RuntimeLimits {
30    /// Return the loop iteration limit.
31    ///
32    /// If the limit is exceeded in a loop it will throw and errror.
33    ///
34    /// The limit value [`u64::MAX`] means that there is no limit.
35    #[inline]
36    #[must_use]
37    pub const fn loop_iteration_limit(&self) -> u64 {
38        self.loop_iteration
39    }
40
41    /// Set the loop iteration limit.
42    ///
43    /// If the limit is exceeded in a loop it will throw and errror.
44    ///
45    /// Setting the limit to [`u64::MAX`] means that there is no limit.
46    #[inline]
47    pub fn set_loop_iteration_limit(&mut self, value: u64) {
48        self.loop_iteration = value;
49    }
50
51    /// Disable loop iteration limit.
52    #[inline]
53    pub fn disable_loop_iteration_limit(&mut self) {
54        self.loop_iteration = u64::MAX;
55    }
56
57    /// Get max backtrace limit for an exception.
58    ///
59    /// Default is 50.
60    #[inline]
61    #[must_use]
62    pub const fn backtrace_limit(&self) -> usize {
63        self.backtrace_limit
64    }
65
66    /// Set max backtrace limit for an exception.
67    #[inline]
68    pub fn set_backtrace_limit(&mut self, value: usize) {
69        self.backtrace_limit = value;
70    }
71
72    /// Get max stack size.
73    #[inline]
74    #[must_use]
75    pub const fn stack_size_limit(&self) -> usize {
76        self.stack_size
77    }
78
79    /// Set max stack size before an error is thrown.
80    #[inline]
81    pub fn set_stack_size_limit(&mut self, value: usize) {
82        self.stack_size = value;
83    }
84
85    /// Get recursion limit.
86    #[inline]
87    #[must_use]
88    pub const fn recursion_limit(&self) -> usize {
89        self.resursion
90    }
91
92    /// Set recursion limit before an error is thrown.
93    #[inline]
94    pub fn set_recursion_limit(&mut self, value: usize) {
95        self.resursion = value;
96    }
97}
boa_engine/vm/runtime_limits.rs

boa_engine/vm/
runtime_limits.rs
