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Merged
merged 2 commits into from
Apr 25, 2020
Merged

shared string strip implemenetation #1876

merged 2 commits into from
Apr 25, 2020

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youknowone
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youknowone commented Apr 25, 2020 •
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I tried to use fn() but it is not easy to solve lifetime error. Any help would be appreciated.

    fn py_strip<'a, S>(
        &'a self,
        chars: OptionalOption<S>,
        func_chars: fn(&'a Self, &'a Self) -> &'a Self,
        func_default: fn(&'a Self) -> &'a Self,
    ) -> &'a Self
    where
        S: 'a + PyCommonStringWrapper<Self>,
    {
        let chars = chars.flat_option();
        match chars {
            Some(chars) => func_chars(self, chars.as_ref()),
            None => func_default(self),
        }
    }
error[E0597]: `chars` does not live long enough
   --> vm/src/obj/pystr.rs:186:45
    |
175 |     fn py_strip<'a, S>(
    |                 -- lifetime `'a` defined here
...
186 |             Some(chars) => func_chars(self, chars.as_ref()),
    |                            -----------------^^^^^----------- `chars` dropped here while still borrowed
    |                            |                |
    |                            |                borrowed value does not live long enough
    |                            argument requires that `chars` is borrowed for `'a`

@youknowone youknowone merged commit d3449ae into RustPython:master Apr 25, 2020
@youknowone youknowone deleted the share-strip branch April 25, 2020 16:44
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@coolreader18 coolreader18 coolreader18 approved these changes

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@youknowone @coolreader18