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//! ref: composer/src/Composer/DependencyResolver/GenericRule.php
use crate::dependency_resolver::{Rule, RuleBase};
use anyhow::Result;
use shirabe_php_shim::{PHP_VERSION_ID, PhpMixed, RuntimeException, hash_raw, unpack};
use super::rule::ReasonData;
#[derive(Debug)]
pub struct GenericRule {
inner: RuleBase,
pub(crate) literals: Vec<i64>,
}
impl GenericRule {
pub fn new(mut literals: Vec<i64>, reason: PhpMixed, reason_data: PhpMixed) -> Self {
let inner = RuleBase::new(reason.as_int().unwrap_or(0), ReasonData::from(reason_data));
literals.sort();
Self { inner, literals }
}
pub(crate) fn base(&self) -> &RuleBase {
&self.inner
}
pub(crate) fn base_mut(&mut self) -> &mut RuleBase {
&mut self.inner
}
pub fn get_literals(&self) -> &Vec<i64> {
&self.literals
}
pub fn get_hash(&self) -> Result<i64> {
let joined = self
.literals
.iter()
.map(|l| l.to_string())
.collect::<Vec<_>>()
.join(",");
let algo = if PHP_VERSION_ID > 80100 {
"xxh3"
} else {
"sha1"
};
let binary = hash_raw(algo, &joined);
let data = unpack("ihash", &binary);
match data {
Some(map) => {
if let Some(val) = map.get("hash") {
Ok(val.as_int().unwrap_or(0))
} else {
Err(RuntimeException {
message: format!("Failed unpacking: {}", joined),
code: 0,
}
.into())
}
}
None => Err(RuntimeException {
message: format!("Failed unpacking: {}", joined),
code: 0,
}
.into()),
}
}
pub fn equals(&self, rule: &Rule) -> bool {
self.literals == rule.get_literals()
}
pub fn is_assertion(&self) -> bool {
self.literals.len() == 1
}
}
impl std::fmt::Display for GenericRule {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"{}",
if self.inner.is_disabled() {
"disabled("
} else {
"("
}
)?;
for (i, literal) in self.literals.iter().enumerate() {
if i != 0 {
write!(f, "|")?;
}
write!(f, "{}", literal)?;
}
write!(f, ")")
}
}
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