brec_macros 0.6.0

Code generator for brec. Implements the block and payload macros.
Documentation 
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use crate::tests::*;
use proptest::prelude::*;
use quote::{format_ident, quote};

#[derive(Debug)]
pub(crate) struct Field {
    pub name: String,
    pub value: Value,
}

impl Field {
    pub fn is_ordered_ty(&self) -> bool {
        self.value.is_ordered_ty()
    }
}

impl Arbitrary for Field {
    type Parameters = (Target, u8);

    type Strategy = BoxedStrategy<Self>;

    fn arbitrary_with((owner, deep): (Target, u8)) -> Self::Strategy {
        if matches!(owner, Target::Block) {
            Target::block_values()
        } else if deep > MAX_VALUE_DEEP {
            Target::nested_values()
        } else {
            Target::payload_values()
        }
        .prop_flat_map(move |id| {
            Value::arbitrary_with((id, deep + 1)).prop_map(move |value: Value| Field {
                name: gen_name(false),
                value,
            })
        })
        .boxed()
    }
}

impl Generate for Field {
    type Options = ();

    fn declaration(&self, _: Self::Options) -> TokenStream {
        let name = format_ident!("{}", self.name);
        let ty = self.value.declaration(());
        quote! {
            #name: #ty
        }
    }
    fn instance(&self, _: Self::Options) -> TokenStream {
        let name = format_ident!("{}", self.name);
        let vl = self.value.instance(());
        quote! {
            #name: #vl
        }
    }
}