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Remove recursion from define_{provider|map}_struct

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This commit is contained in:
Jimmy Brisson 2017-10-12 16:45:07 -05:00
parent 2160bab0da
commit fcb8bc9d4e
1 changed files with 4 additions and 99 deletions
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103
src/librustc/ty/maps/plumbing.rs
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@ -468,8 +468,7 @@ macro_rules! define_maps {
define_provider_struct! {
tcx: $tcx,
input: ($(([$($modifiers)*] [$name] [$K] [$V]))*),
output: ()
input: ($(([$($modifiers)*] [$name] [$K] [$V]))*)
}
impl<$tcx> Copy for Providers<$tcx> {}
@ -480,78 +479,19 @@ macro_rules! define_maps {
}
macro_rules! define_map_struct {
// Initial state
(tcx: $tcx:tt,
input: $input:tt) => {
define_map_struct! {
tcx: $tcx,
input: $input,
output: ()
}
};
// Final output
(tcx: $tcx:tt,
input: (),
output: ($($output:tt)*)) => {
input: ($(([$(modifiers:tt)*] [$($attr:tt)*] [$name:ident]))*)) => {
pub struct Maps<$tcx> {
providers: IndexVec<CrateNum, Providers<$tcx>>,
query_stack: RefCell<Vec<(Span, Query<$tcx>)>>,
$($output)*
}
};
// Field recognized and ready to shift into the output
(tcx: $tcx:tt,
ready: ([$($pub:tt)*] [$($attr:tt)*] [$name:ident]),
input: $input:tt,
output: ($($output:tt)*)) => {
define_map_struct! {
tcx: $tcx,
input: $input,
output: ($($output)*
$(#[$attr])* $($pub)* $name: RefCell<QueryMap<queries::$name<$tcx>>>,)
}
};
// No modifiers left? This is a private item.
(tcx: $tcx:tt,
input: (([] $attrs:tt $name:tt) $($input:tt)*),
output: $output:tt) => {
define_map_struct! {
tcx: $tcx,
ready: ([] $attrs $name),
input: ($($input)*),
output: $output
}
};
// Skip other modifiers
(tcx: $tcx:tt,
input: (([$other_modifier:tt $($modifiers:tt)*] $($fields:tt)*) $($input:tt)*),
output: $output:tt) => {
define_map_struct! {
tcx: $tcx,
input: (([$($modifiers)*] $($fields)*) $($input)*),
output: $output
$($(#[$attr])* $name: RefCell<QueryMap<queries::$name<$tcx>>>,)*
}
};
}
macro_rules! define_provider_struct {
// Initial state:
(tcx: $tcx:tt, input: $input:tt) => {
define_provider_struct! {
tcx: $tcx,
input: $input,
output: ()
}
};
// Final state:
(tcx: $tcx:tt,
input: (),
output: ($(([$name:ident] [$K:ty] [$R:ty]))*)) => {
input: ($(([$($modifiers:tt)*] [$name:ident] [$K:ty] [$R:ty]))*)) => {
pub struct Providers<$tcx> {
$(pub $name: for<'a> fn(TyCtxt<'a, $tcx, $tcx>, $K) -> $R,)*
}
@ -566,41 +506,6 @@ macro_rules! define_provider_struct {
}
}
};
// Something ready to shift:
(tcx: $tcx:tt,
ready: ($name:tt $K:tt $V:tt),
input: $input:tt,
output: ($($output:tt)*)) => {
define_provider_struct! {
tcx: $tcx,
input: $input,
output: ($($output)* ($name $K $V))
}
};
// Regular queries produce a `V` only.
(tcx: $tcx:tt,
input: (([] $name:tt $K:tt $V:tt) $($input:tt)*),
output: $output:tt) => {
define_provider_struct! {
tcx: $tcx,
ready: ($name $K $V),
input: ($($input)*),
output: $output
}
};
// Skip modifiers.
(tcx: $tcx:tt,
input: (([$other_modifier:tt $($modifiers:tt)*] $($fields:tt)*) $($input:tt)*),
output: $output:tt) => {
define_provider_struct! {
tcx: $tcx,
input: (([$($modifiers)*] $($fields)*) $($input)*),
output: $output
}
};
}