meplang 0.1.8

An EVM low-level language that gives full control over the control flow of the smart contract.
Documentation 
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use bytes::Bytes;
use pest::iterators::Pair;

use crate::parser::error::new_error_from_pair;
use crate::parser::parser::{map_unique_child, FromPair, Rule};

#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct RHexLiteral(pub Bytes);

impl From<Bytes> for RHexLiteral {
    fn from(value: Bytes) -> Self {
        Self(value)
    }
}

impl FromPair for RHexLiteral {
    fn from_pair(hex_literal: Pair<Rule>) -> Result<Self, pest::error::Error<Rule>> {
        assert!(hex_literal.as_rule() == Rule::hex_literal);

        if hex_literal.as_str().len() % 2 != 0 {
            return Err(new_error_from_pair(
                &hex_literal,
                "Hex literals must be odd size.".to_owned(),
            ));
        }

        match hex::decode(hex_literal.as_str().strip_prefix("0x").unwrap()) {
            Ok(decoded) => Ok(Bytes::from(decoded).into()),
            Err(err) => Err(new_error_from_pair(&hex_literal, err.to_string())),
        }
    }
}

#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct RStringLiteral(pub String);

impl From<String> for RStringLiteral {
    fn from(value: String) -> Self {
        Self(value)
    }
}

impl FromPair for RStringLiteral {
    fn from_pair(string_literal: Pair<Rule>) -> Result<Self, pest::error::Error<Rule>> {
        assert!(string_literal.as_rule() == Rule::string_literal);

        Ok(map_unique_child(string_literal, |string_inner| {
            assert!(string_inner.as_rule() == Rule::string_inner);
            string_inner.as_str().to_owned().into()
        }))
    }
}