mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-26 07:46:21 +02:00
libexpr: Check primop arity earlier
This commit is contained in:
parent
ba3cb4a049
commit
0daccb1121
4 changed files with 33 additions and 10 deletions
|
@ -723,6 +723,23 @@ void EvalState::addConstant(const std::string & name, Value * v, Constant info)
|
|||
}
|
||||
|
||||
|
||||
void PrimOp::check()
|
||||
{
|
||||
if (arity > maxPrimOpArity) {
|
||||
throw Error("primop arity must not exceed %1%", maxPrimOpArity);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void Value::mkPrimOp(PrimOp * p)
|
||||
{
|
||||
p->check();
|
||||
clearValue();
|
||||
internalType = tPrimOp;
|
||||
primOp = p;
|
||||
}
|
||||
|
||||
|
||||
Value * EvalState::addPrimOp(PrimOp && primOp)
|
||||
{
|
||||
/* Hack to make constants lazy: turn them into a application of
|
||||
|
@ -1692,8 +1709,7 @@ void EvalState::callFunction(Value & fun, size_t nrArgs, Value * * args, Value &
|
|||
/* We have all the arguments, so call the primop with
|
||||
the previous and new arguments. */
|
||||
|
||||
assert(arity < 64);
|
||||
Value * vArgs[64];
|
||||
Value * vArgs[maxPrimOpArity];
|
||||
auto n = argsDone;
|
||||
for (Value * arg = &vCur; arg->isPrimOpApp(); arg = arg->primOpApp.left)
|
||||
vArgs[--n] = arg->primOpApp.right;
|
||||
|
|
|
@ -18,6 +18,12 @@
|
|||
|
||||
namespace nix {
|
||||
|
||||
/**
|
||||
* We put a limit on primop arity because it lets us use a fixed size array on
|
||||
* the stack. 16 is already an impractical number of arguments. Use an attrset
|
||||
* argument for such overly complicated functions.
|
||||
*/
|
||||
constexpr size_t maxPrimOpArity = 64;
|
||||
|
||||
class Store;
|
||||
class EvalState;
|
||||
|
@ -71,6 +77,12 @@ struct PrimOp
|
|||
* Optional experimental for this to be gated on.
|
||||
*/
|
||||
std::optional<ExperimentalFeature> experimentalFeature;
|
||||
|
||||
/**
|
||||
* Validity check to be performed by functions that introduce primops,
|
||||
* such as RegisterPrimOp() and Value::mkPrimOp().
|
||||
*/
|
||||
void check();
|
||||
};
|
||||
|
||||
/**
|
||||
|
|
|
@ -114,7 +114,8 @@ TEST_F(ValuePrintingTests, vLambda)
|
|||
TEST_F(ValuePrintingTests, vPrimOp)
|
||||
{
|
||||
Value vPrimOp;
|
||||
vPrimOp.mkPrimOp(nullptr);
|
||||
PrimOp primOp{};
|
||||
vPrimOp.mkPrimOp(&primOp);
|
||||
|
||||
test(vPrimOp, "<PRIMOP>");
|
||||
}
|
||||
|
|
|
@ -354,13 +354,7 @@ public:
|
|||
// Value will be overridden anyways
|
||||
}
|
||||
|
||||
inline void mkPrimOp(PrimOp * p)
|
||||
{
|
||||
clearValue();
|
||||
internalType = tPrimOp;
|
||||
primOp = p;
|
||||
}
|
||||
|
||||
void mkPrimOp(PrimOp * p);
|
||||
|
||||
inline void mkPrimOpApp(Value * l, Value * r)
|
||||
{
|
||||
|
|
Loading…
Reference in a new issue