fuel-ethabi 18.0.0

// Copyright 2015-2020 Parity Technologies
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Utils used by different modules.

use crate::Word;

/// Converts a u32 to a right aligned array of 32 bytes.
pub fn pad_u32(value: u32) -> Word {
	let mut padded = [0u8; 32];
	padded[28..32].copy_from_slice(&value.to_be_bytes());
	padded
}

// This is a workaround to support non-spec compliant function and event names,
// see: https://github.com/paritytech/parity/issues/4122
#[cfg(feature = "serde")]
pub(crate) mod sanitize_name {
	#[cfg(not(feature = "std"))]
	use crate::no_std_prelude::*;
	use serde::{Deserialize, Deserializer};

	pub fn deserialize<'de, D>(deserializer: D) -> Result<String, D::Error>
	where
		D: Deserializer<'de>,
	{
		let mut name = String::deserialize(deserializer)?;
		sanitize_name(&mut name);
		Ok(name)
	}

	fn sanitize_name(name: &mut String) {
		if let Some(i) = name.find('(') {
			name.truncate(i);
		}
	}
}

#[cfg(test)]
mod tests {
	use super::pad_u32;
	use hex_literal::hex;

	#[test]
	fn test_pad_u32() {
		// this will fail if endianness is not supported
		assert_eq!(
			pad_u32(0).to_vec(),
			hex!("0000000000000000000000000000000000000000000000000000000000000000").to_vec()
		);
		assert_eq!(
			pad_u32(1).to_vec(),
			hex!("0000000000000000000000000000000000000000000000000000000000000001").to_vec()
		);
		assert_eq!(
			pad_u32(0x100).to_vec(),
			hex!("0000000000000000000000000000000000000000000000000000000000000100").to_vec()
		);
		assert_eq!(
			pad_u32(0xffffffff).to_vec(),
			hex!("00000000000000000000000000000000000000000000000000000000ffffffff").to_vec()
		);
	}
}