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use ahash::AHasher;
use alloc::{borrow::ToOwned, rc::Rc, string::String, vec::Vec};
use core::hash::Hasher;
use core::{cell::RefCell, convert::From};
use serde::{Deserialize, Serialize};
#[cfg(feature = "std")]
use crate::Error;
#[cfg(feature = "std")]
use std::{fs::File, io::Read, path::Path};
use crate::{
bolts::{ownedref::OwnedSlice, HasLen},
inputs::{HasBytesVec, HasTargetBytes, Input},
};
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, Eq, Hash)]
pub enum GeneralizedItem {
Bytes(Vec<u8>),
Gap,
}
#[derive(Serialize, Deserialize, Clone, Debug, Default, PartialEq, Eq, Hash)]
pub struct GeneralizedInput {
bytes: Vec<u8>,
generalized: Option<Vec<GeneralizedItem>>,
pub grimoire_mutated: bool,
}
impl Input for GeneralizedInput {
fn generate_name(&self, _idx: usize) -> String {
let mut hasher = AHasher::new_with_keys(0, 0);
hasher.write(self.bytes());
format!("{:016x}", hasher.finish())
}
fn wrapped_as_testcase(&mut self) {
if self.grimoire_mutated {
self.bytes = self.generalized_to_bytes();
} else {
self.generalized = None;
}
self.grimoire_mutated = false;
}
}
impl From<GeneralizedInput> for Rc<RefCell<GeneralizedInput>> {
fn from(input: GeneralizedInput) -> Self {
Rc::new(RefCell::new(input))
}
}
impl HasBytesVec for GeneralizedInput {
#[inline]
fn bytes(&self) -> &[u8] {
&self.bytes
}
#[inline]
fn bytes_mut(&mut self) -> &mut Vec<u8> {
&mut self.bytes
}
}
impl HasTargetBytes for GeneralizedInput {
#[inline]
fn target_bytes(&self) -> OwnedSlice<u8> {
if self.grimoire_mutated {
OwnedSlice::from(self.generalized_to_bytes())
} else {
OwnedSlice::from(&self.bytes)
}
}
}
impl HasLen for GeneralizedInput {
#[inline]
fn len(&self) -> usize {
self.bytes.len()
}
}
impl From<Vec<u8>> for GeneralizedInput {
fn from(bytes: Vec<u8>) -> Self {
Self::new(bytes)
}
}
impl From<&[u8]> for GeneralizedInput {
fn from(bytes: &[u8]) -> Self {
Self::new(bytes.to_owned())
}
}
impl GeneralizedInput {
#[must_use]
pub fn new(bytes: Vec<u8>) -> Self {
Self {
bytes,
generalized: None,
grimoire_mutated: false,
}
}
pub fn generalized_from_options(&mut self, v: &[Option<u8>]) {
let mut res = vec![];
let mut bytes = vec![];
if v.first() != Some(&None) {
res.push(GeneralizedItem::Gap);
}
for e in v {
match e {
None => {
if !bytes.is_empty() {
res.push(GeneralizedItem::Bytes(bytes.clone()));
bytes.clear();
}
res.push(GeneralizedItem::Gap);
}
Some(b) => {
bytes.push(*b);
}
}
}
if !bytes.is_empty() {
res.push(GeneralizedItem::Bytes(bytes));
}
if res.last() != Some(&GeneralizedItem::Gap) {
res.push(GeneralizedItem::Gap);
}
self.generalized = Some(res);
}
pub fn generalized_extend(&mut self, other: &[GeneralizedItem]) {
let gen = self.generalized.get_or_insert_with(Vec::new);
if gen.last().is_some()
&& other.first().is_some()
&& *gen.last().unwrap() == GeneralizedItem::Gap
&& *other.first().unwrap() == GeneralizedItem::Gap
{
gen.extend_from_slice(&other[1..]);
} else {
gen.extend_from_slice(other);
}
}
#[must_use]
pub fn generalized_len(&self) -> usize {
match &self.generalized {
None => 0,
Some(gen) => {
let mut size = 0;
for item in gen {
match item {
GeneralizedItem::Bytes(b) => size += b.len(),
GeneralizedItem::Gap => size += 1,
}
}
size
}
}
}
#[must_use]
pub fn generalized_to_bytes(&self) -> Vec<u8> {
match &self.generalized {
None => vec![],
Some(gen) => {
let mut bytes = vec![];
for item in gen {
if let GeneralizedItem::Bytes(b) = item {
bytes.extend_from_slice(b);
}
}
bytes
}
}
}
#[must_use]
pub fn generalized(&self) -> Option<&[GeneralizedItem]> {
self.generalized.as_deref()
}
pub fn generalized_mut(&mut self) -> &mut Option<Vec<GeneralizedItem>> {
&mut self.generalized
}
#[cfg(feature = "std")]
pub fn from_bytes_file<P>(path: P) -> Result<Self, Error>
where
P: AsRef<Path>,
{
let mut file = File::open(path)?;
let mut bytes: Vec<u8> = vec![];
file.read_to_end(&mut bytes)?;
Ok(Self {
bytes,
generalized: None,
grimoire_mutated: false,
})
}
}