nix::PrimOp Struct Reference

#include <eval.hh>

Collaboration diagram for nix::PrimOp:

Public Attributes
std::string	name
std::vector< std::string >	args
size_t	arity = 0
const char *	doc = nullptr
bool	isCompactTrace = false
std::function< PrimOpImpl >	fun
std::optional< ExperimentalFeature >	experimentalFeature

Detailed Description

Info about a primitive operation, and its implementation

Member Data Documentation

args

std::vector<std::string> nix::PrimOp::args

Names of the parameters of a primop, for primops that take a fixed number of arguments to be substituted for these parameters.

arity

size_t nix::PrimOp::arity = 0

Aritiy of the primop.

If args is not empty, this field will be computed from that field instead, so it doesn't need to be manually set.

doc

const char* nix::PrimOp::doc = nullptr

Optional free-form documentation about the primop.

experimentalFeature

std::optional<ExperimentalFeature> nix::PrimOp::experimentalFeature

Optional experimental for this to be gated on.

fun

std::function<PrimOpImpl> nix::PrimOp::fun

Implementation of the primop.

isCompactTrace

bool nix::PrimOp::isCompactTrace = false

Specifies that the function's trace is compact enough

Mostly used to always show builtins.addErrorContext traces

name

std::string nix::PrimOp::name

Name of the primop. __ prefix is treated specially.

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The documentation for this struct was generated from the following file:

• lix/libexpr/eval.hh