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Add builtins.traceVerbose

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Co-Authored-By: Silvan Mosberger <contact@infinisil.com>

Add builtins.traceVerbose tests
This commit is contained in:
Gytis Ivaskevicius 2021-12-13 09:24:24 +02:00
parent 541e10496a
commit ba1fe85b65
3 changed files with 26 additions and 0 deletions
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21
src/libexpr/primops.cc
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@ -970,6 +970,15 @@ static RegisterPrimOp primop_trace({
});
/* Takes two arguments and evaluates to the second one. Used as the
* builtins.traceVerbose implementation when --trace-verbose is not enabled
*/
static void prim_second(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
state.forceValue(*args[1], pos);
v = *args[1];
}
/*************************************************************
* Derivations
*************************************************************/
@ -3926,6 +3935,18 @@ void EvalState::createBaseEnv()
addPrimOp("__exec", 1, prim_exec);
}
addPrimOp({
.fun = evalSettings.traceVerbose ? prim_trace : prim_second,
.arity = 2,
.name = symbols.create("__traceVerbose"),
.args = { "e1", "e2" },
.doc = R"(
Evaluate *e1* and print its abstract syntax representation on standard
error if `--trace-verbose` is enabled. Then return *e2*. This function
is useful for debugging.
)",
});
/* Add a value containing the current Nix expression search path. */
mkList(v, searchPath.size());
int n = 0;