scarf-parser 0.1.1

A helper crate of scarf for parsing a SystemVerilog source file
Documentation 
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// =======================================================================
// block_item_declarations.rs
// =======================================================================
// Parsing for 1800-2023 A.2.8

use crate::*;
use scarf_syntax::*;
use winnow::ModalResult;
use winnow::Parser;
use winnow::combinator::alt;

enum BlockItemDeclarationBody<'a> {
    Data(DataDeclaration<'a>),
    LocalParameter(LocalParameterDeclaration<'a>),
    Parameter(ParameterDeclaration<'a>),
    Let(LetDeclaration<'a>),
}

pub fn block_item_declaration_parser<'s>(
    input: &mut Tokens<'s>,
) -> ModalResult<BlockItemDeclaration<'s>, VerboseError<'s>> {
    let _body_parser = alt((
        data_declaration_parser.map(|a| BlockItemDeclarationBody::Data(a)),
        local_parameter_declaration_parser
            .map(|a| BlockItemDeclarationBody::LocalParameter(a)),
        parameter_declaration_parser
            .map(|a| BlockItemDeclarationBody::Parameter(a)),
        let_declaration_parser.map(|a| BlockItemDeclarationBody::Let(a)),
    ));
    (attribute_instance_vec_parser, _body_parser)
        .map(|(a, b)| match b {
            BlockItemDeclarationBody::Data(c) => {
                BlockItemDeclaration::Data(Box::new((a, c)))
            }
            BlockItemDeclarationBody::LocalParameter(c) => {
                BlockItemDeclaration::LocalParameter(Box::new((a, c)))
            }
            BlockItemDeclarationBody::Parameter(c) => {
                BlockItemDeclaration::Parameter(Box::new((a, c)))
            }
            BlockItemDeclarationBody::Let(c) => {
                BlockItemDeclaration::Let(Box::new((a, c)))
            }
        })
        .parse_next(input)
}