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Guard against setters mutating constants, and allow pure setters.

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This commit is contained in:
Stephen Chung
2021-05-15 11:41:42 +08:00
parent 565134c4da
commit 941e09d29d
15 changed files with 184 additions and 156 deletions
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8
tests/plugins.rs
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@@ -38,9 +38,10 @@ mod test {
pub fn funky_add(x: INT, y: INT) -> INT {
x / 2 + y * 2
}
#[rhai_fn(pure)]
pub fn no_effect(_array: &mut Array, _value: INT) {
// do nothing to array
#[rhai_fn(name = "no_effect", set = "no_effect", pure)]
pub fn no_effect(array: &mut Array, value: INT) {
// array is not modified
println!("Array = {:?}, Value = {}", array, value);
}
}
}
@@ -87,6 +88,7 @@ fn test_plugins_package() -> Result<(), Box<EvalAltResult>> {
{
assert_eq!(engine.eval::<INT>("let a = [1, 2, 3]; a.foo")?, 1);
engine.consume("const A = [1, 2, 3]; A.no_effect(42);")?;
engine.consume("const A = [1, 2, 3]; A.no_effect = 42;")?;
assert!(
matches!(*engine.consume("const A = [1, 2, 3]; A.test(42);").expect_err("should error"),