1#[macro_export]2macro_rules! nix_expr_inner {3 4 (@obj($o:ident) $field:ident$(, $($tt:tt)*)?) => {{5 $o.insert(6 stringify!($field),7 $crate::Value::from($field),8 );9 $(nix_expr_inner!(@obj($o) $($tt)*);)?10 }};11 (@obj($o:ident) $field:ident: $v:expr$(, $($tt:tt)*)?) => {{12 $o.insert(13 stringify!($field),14 $crate::Value::from($v),15 );16 $(nix_expr_inner!(@obj($o) $($tt)*);)?17 }};18 (@obj($o:ident)) => {{}};19 (Obj { $($tt:tt)* }) => {{20 use $crate::{nix_expr_inner};21 let mut out = std::collections::hash_map::HashMap::new();22 nix_expr_inner!(@obj(out) $($tt)*);23 Value::new_attrs(out)24 }};25 (@field($o:ident) . $var:ident $($tt:tt)*) => {{26 $o.index_attr(stringify!($var));27 nix_expr_inner!(@field($o) $($tt)*);28 }};29 (@field($o:ident) [{ $v:expr }] $($tt:tt)*) => {{30 $o.push(Index::attr(&$v));31 nix_expr_inner!(@o($o) $($tt)*);32 }};33 (@field($o:ident) [ $($var:tt)+ ] $($tt:tt)*) => {{34 $o.push(Index::Expr($crate::nix_expr_inner!($($var)+)));35 nix_expr_inner!(@o($o) $($tt)*);36 }};37 (@field($o:ident) ($($var:tt)*) $($tt:tt)*) => {38 $o.push(Index::ExprApply($crate::nix_expr_inner!($($var)+)));39 nix_expr_inner!(@o($o) $($tt)*);40 };41 (@field($o:ident)) => {};42 ($field:ident $($tt:tt)*) => {{43 use $crate::{nix_expr_inner};44 45 #[allow(unused_mut)]46 let mut out = $field.clone();47 nix_expr_inner!(@field(out) $($tt)*);48 out49 }};50 ($v:literal) => {{51 use $crate::macros::NixExprBuilder;52 NixExprBuilder::string($v)53 }};54 ({$v:expr}) => {{55 $crate::Value::serialized(&$v)?56 }}57}58#[macro_export]59macro_rules! nix_expr {60 ($($tt:tt)+) => {{61 use $crate::{macros::{NixExprBuilder}, Value, nix_expr_inner};62 let expr = nix_expr_inner!($($tt)+);63 Field::new(expr.session(), expr.out)64 }};65}6667#[macro_export]68macro_rules! nix_go {69 (@o($o:expr) . $var:ident $($tt:tt)*) => {{70 nix_go!(@o($o.get_field(stringify!($var))?) $($tt)*)71 }};72 (@o($o:expr) [ $v:expr ] $($tt:tt)*) => {{73 nix_go!(@o($o.get_field($v)?) $($tt)*)74 }};75 (@o($o:expr) ($($var:tt)*) $($tt:tt)*) => {76 nix_go!(@o($o.call($crate::nix_expr_inner!($($var)+))?) $($tt)*)77 };78 (@o($o:expr)) => {$o};79 ($field:ident $($tt:tt)+) => {{80 use $crate::nix_go;81 let out = $field.clone();82 nix_go!(@o(out) $($tt)*)83 }}84}85#[macro_export]86macro_rules! nix_go_json {87 ($($tt:tt)*) => {{88 $crate::nix_go!($($tt)*).as_json()?89 }};90}