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Allow using RegisterPrimop to define constants.

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This enables plugins to add new constants, as well as new primops.
This commit is contained in:
Shea Levy 2018-02-08 13:00:53 -05:00
parent 88cd2d41ac
commit 081f14a169
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GPG key ID: 5C0BD6957D86FE27
6 changed files with 15 additions and 6 deletions
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2
tests/plugins.sh
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@ -2,6 +2,6 @@ source common.sh
set -o pipefail
res=$(nix eval '(builtins.constNull true)' --option plugin-files $PWD/plugins/plugintest.so)
res=$(nix eval '(builtins.anotherNull)' --option plugin-files $PWD/plugins/plugintest.so)
[ "$res"x = "nullx" ]

4
tests/plugins/plugintest.cc
View file

@ -2,9 +2,9 @@
using namespace nix;
static void prim_constNull (EvalState & state, const Pos & pos, Value ** args, Value & v)
static void prim_anotherNull (EvalState & state, const Pos & pos, Value ** args, Value & v)
{
mkNull(v);
}
static RegisterPrimOp r("constNull", 1, prim_constNull);
static RegisterPrimOp r("anotherNull", 0, prim_anotherNull);