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Share constant variables for closures.

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This commit is contained in:
Stephen Chung
2020-12-09 21:06:36 +08:00
parent dbee0eb0f5
commit 99dd7a6481
4 changed files with 24 additions and 27 deletions
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15
src/dynamic.rs
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@@ -615,7 +615,20 @@ impl Dynamic {
/// if its value is going to be modified. This safe-guards constant values from being modified
/// from within Rust functions.
pub fn is_read_only(&self) -> bool {
self.access_mode().is_read_only()
match self.0 {
#[cfg(not(feature = "no_closure"))]
Union::Shared(_, access) if access.is_read_only() => true,
#[cfg(not(feature = "no_closure"))]
#[cfg(not(feature = "sync"))]
Union::Shared(ref cell, _) => cell.borrow().access_mode().is_read_only(),
#[cfg(not(feature = "no_closure"))]
#[cfg(feature = "sync")]
Union::Shared(ref cell, _) => cell.read().unwrap().access_mode().is_read_only(),
_ => self.access_mode().is_read_only(),
}
}
/// Create a [`Dynamic`] from any type. A [`Dynamic`] value is simply returned as is.
///