moxy-derive 0.0.4

derive macros for moxy crate
Documentation 
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use quote::quote;

use super::{DisplayOptions, DisplayOutput, Segment, SegmentKind, access};

pub struct KeyValueStyleSyntax {
    pub pretty: bool,
}

impl KeyValueStyleSyntax {
    pub fn render(&self, opts: &DisplayOptions) -> syn::Result<DisplayOutput> {
        let mut out = DisplayOutput::new();
        let sep = if self.pretty { "\n" } else { " " };

        for (i, f) in opts.fields.iter().enumerate() {
            let a = access(f, opts.use_self);

            out.push(Segment::literal(SegmentKind::FieldName, &f.display_name()?));
            out.push(Segment::literal(SegmentKind::Assign, "="));
            out.push(Segment::placeholder(SegmentKind::Value, quote! { #a }));

            if i + 1 < opts.fields.len() {
                out.push(Segment::literal(SegmentKind::Separator, sep));
            }
        }

        Ok(out)
    }
}