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C API: add a way to throw errors from primops

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Yorick van Pelt 2023-08-28 22:19:28 +02:00 • committed by José Luis Lafuente
parent 3d79f38709
commit ab9250286a
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5 changed files with 30 additions and 21 deletions
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7
src/libexpr/c/nix_api_value.cc
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@ -42,7 +42,12 @@ static nix::Value & check_value_not_null(Value * value)
static void nix_c_primop_wrapper(
PrimOpFun f, void * userdata, nix::EvalState & state, const nix::PosIdx pos, nix::Value ** args, nix::Value & v)
{
f(userdata, (State *) &state, *reinterpret_cast<const int *>(&pos), (Value **) args, (Value *) &v);
nix_c_context ctx;
f(userdata, &ctx, (State *) &state, (Value **) args, (Value *) &v);
/* TODO: In the future, this should throw different errors depending on the error code */
if (ctx.last_err_code != NIX_OK)
state.debugThrowLastTrace(nix::Error(
{.msg = nix::hintfmt("Error from builtin function: %s", *ctx.last_err), .errPos = state.positions[pos]}));
}
PrimOp * nix_alloc_primop(