John
82b71e2517
- Use the FmtAdapter from cl-ast - Add a new delimiter-constructing delimit_with function.
24 lines
547 B
Rust
24 lines
547 B
Rust
pub use cl_ast::format::*;
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use std::{fmt, iter};
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/// Separates the items yielded by iterating the provided function
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pub const fn separate<'f, 's, Item, F, W>(
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sep: &'s str,
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t: F,
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) -> impl FnOnce(W) -> fmt::Result + 's
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where
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Item: FnMut(&mut W) -> fmt::Result,
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F: FnMut() -> Option<Item> + 's,
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W: fmt::Write,
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{
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move |mut f| {
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for (idx, mut disp) in iter::from_fn(t).enumerate() {
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if idx > 0 {
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f.write_str(sep)?;
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}
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disp(&mut f)?;
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}
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Ok(())
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}
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}
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