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Add primops all and any

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These are used thousands of times during NixOS evaluation, so it's
useful to speed them up.
This commit is contained in:
Eelco Dolstra 2015-07-23 19:23:11 +02:00
parent 39e27a04b8
commit 14be783676
4 changed files with 67 additions and 0 deletions
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33
src/libexpr/primops.cc
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@ -1333,6 +1333,37 @@ static void prim_foldlStrict(EvalState & state, const Pos & pos, Value * * args,
}
static void anyOrAll(bool any, EvalState & state, const Pos & pos, Value * * args, Value & v)
{
state.forceFunction(*args[0], pos);
state.forceList(*args[1], pos);
Value vTmp;
for (unsigned int n = 0; n < args[1]->list.length; ++n) {
state.callFunction(*args[0], *args[1]->list.elems[n], vTmp, pos);
bool res = state.forceBool(vTmp);
if (res == any) {
mkBool(v, any);
return;
}
}
mkBool(v, !any);
}
static void prim_any(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
anyOrAll(true, state, pos, args, v);
}
static void prim_all(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
anyOrAll(false, state, pos, args, v);
}
/*************************************************************
* Integer arithmetic
*************************************************************/
@ -1671,6 +1702,8 @@ void EvalState::createBaseEnv()
addPrimOp("__concatLists", 1, prim_concatLists);
addPrimOp("__length", 1, prim_length);
addPrimOp("__foldl'", 3, prim_foldlStrict);
addPrimOp("__any", 2, prim_any);
addPrimOp("__all", 2, prim_all);
// Integer arithmetic
addPrimOp("__add", 2, prim_add);