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use partial_ref::{partial, PartialRef};
use varisat_formula::Lit;
use crate::context::{parts::*, Context};
pub fn compute_glue(mut ctx: partial!(Context, mut TmpFlagsP, ImplGraphP), lits: &[Lit]) -> usize {
let (tmp_flags, ctx) = ctx.split_part_mut(TmpFlagsP);
let impl_graph = ctx.part(ImplGraphP);
let flags = &mut tmp_flags.flags;
let mut glue = 0;
for &lit in lits {
let level = impl_graph.level(lit.var());
let flag = &mut flags[level];
if !*flag {
*flag = true;
glue += 1
}
}
for &lit in lits {
let level = impl_graph.level(lit.var());
flags[level] = false;
}
glue
}