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use std::hash::{Hash, Hasher};
use std::{fmt, ptr};

use crate::llvm;
pub(crate) use crate::llvm::Value;

impl PartialEq for Value {
    fn eq(&self, other: &Self) -> bool {
        ptr::eq(self, other)
    }
}

impl Eq for Value {}

impl Hash for Value {
    fn hash<H: Hasher>(&self, hasher: &mut H) {
        (self as *const Self).hash(hasher);
    }
}

impl fmt::Debug for Value {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.write_str(
            &llvm::build_string(|s| unsafe {
                llvm::LLVMRustWriteValueToString(self, s);
            })
            .expect("non-UTF8 value description from LLVM"),
        )
    }
}