453 lines
12 KiB
Rust
453 lines
12 KiB
Rust
#[doc(hidden)]
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#[macro_export]
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macro_rules! query_def_type {
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(@ ($type:ty)) => {
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$type
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};
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(@ 'dyn ($type:ty)) => {
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$type
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};
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(@ 'vec ($type:ty)) => {
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::std::vec::Vec<$type>
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};
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(@ 'map ($key:ty, $value:ty)) => {
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::std::collections::HashMap<$key, $value>
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};
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}
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#[doc(hidden)]
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#[macro_export]
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macro_rules! query_def_field {
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(@dyn $type:ty) => {
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Option<<$type as $crate::DynamicQuery>::Definition>
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};
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(@ ($type:ty)) => {
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bool
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};
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(@ 'dyn ($type:ty)) => {
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$crate::query_def_field!(@dyn $type)
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};
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(@ 'vec ($type:ty)) => {
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$crate::query_def_field!(@dyn $type)
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};
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(@ 'map ($key:ty, $value:ty)) => {
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$crate::query_def_field!(@dyn $value)
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};
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}
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#[doc(hidden)]
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#[macro_export]
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macro_rules! query_def_filter {
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// note about this: 'dyn is implied for 'vec and 'map because if the type is not 'dyn, then the
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// special handling is not necessary in the first place.
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(@ $query:expr, $value:ident, 'vec ($_type:path)) => {
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match $query {
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Some(query) => {
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if let Some(ref mut value) = $value {
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for value in value.iter_mut() {
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value.filter_ref(&query);
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}
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}
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}
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None => {
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*$value = None;
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}
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}
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};
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(@ $query:expr, $value:ident, 'map ($_key:path, $_value:path)) => {
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match $query {
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Some(query) => {
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if let Some(ref mut value) = $value {
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for (_, value) in value.iter_mut() {
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value.filter_ref(&query);
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}
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}
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}
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None => {
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*$value = None;
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}
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}
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};
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(@ $query:expr, $value:ident, 'dyn ($($_type:tt)+)) => {
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if let Some(ref mut value) = $value {
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if let Some(ref query) = $query {
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value.filter_ref(&query);
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}
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}
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};
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(@ $query:expr, $value:ident, ($($_type:tt)+)) => {
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if !*$query {
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*$value = None;
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}
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};
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}
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#[doc(hidden)]
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#[macro_export]
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macro_rules! query_def_internal_struct {
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(@
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$(
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$(#[$meta:meta])
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*
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$vis:vis $data:ident$((
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$(#[$def_meta:meta])
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+
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))? {
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$(
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$(#[$field_meta:meta])
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*
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$field:ident: $($qualifier:lifetime)? ($($type:tt)+),
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)+
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}
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)
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*
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) => {
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$(
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#[derive(Debug, Clone)]
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$(#[$meta])
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*
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$vis struct $data {
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$(
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$(#[$field_meta])
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*
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pub $field: Option<$crate::query_def_type!(@ $($qualifier)? ($($type)+))>,
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)+
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}
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$crate::paste::paste! {
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#[derive(Debug, Clone, Copy, Default)]
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$( $( #[$def_meta] )+ )?
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$vis struct [<$data Def>] {
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$(
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pub $field: $crate::query_def_field!(@ $($qualifier)? ($($type)+)),
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)+
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}
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}
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impl $crate::DynamicQuery for $data {
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type Definition = $crate::paste::paste! { [<$data Def>] };
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fn filter_ref(&mut self, def: &Self::Definition) {
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$(
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let query = &def.$field;
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let value = &mut self.$field;
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$crate::query_def_filter!(@ query, value, $($qualifier)? ($($type)+));
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)
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+
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}
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}
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)
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*
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};
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}
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#[doc(hidden)]
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#[macro_export]
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macro_rules! query_def_internal_enum {
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(@
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$(
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$(#[$meta:meta])
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*
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$vis:vis $data:ident$((
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$(#[$def_meta:meta])
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+
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))? {
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$(
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$( #[$variant_meta:meta] )*
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$variant:ident$((
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$(#[$variant_def_meta:meta])
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+
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))? {
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$(
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$(#[$field_meta:meta])
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*
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$field:ident: $($qualifier:lifetime)? ($($type:tt)+),
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)*
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}
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),+
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}
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)
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*
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) => {
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$(
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#[derive(Debug, Clone)]
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$(#[$meta])
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*
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$vis enum $data {
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$(
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$( #[$variant_meta] )*
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$variant {
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$(
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$(#[$field_meta])
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*
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$field: Option<$crate::query_def_type!(@ $($qualifier)? ($($type)+))>,
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)*
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}
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),+
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}
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$crate::paste::paste! {
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#[derive(Debug, Clone, Copy, Default)]
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$( $( #[$def_meta] )+ )?
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$vis struct [<$data Def>] {
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$(
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pub [<$variant:snake:lower>]: [<$data Def Variant $variant>],
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)+
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}
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}
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$crate::paste::paste! {
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// impl [<$data Def>] {
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// $(
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// pub type $variant = [<$data Def Variant $variant>];
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// )+
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// }
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$(
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#[derive(Debug, Clone, Copy, Default)]
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$( $( #[$variant_def_meta] )+ )?
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$vis struct [<$data Def Variant $variant>] {
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$(
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pub $field: $crate::query_def_field!(@ $($qualifier)? ($($type)+)),
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)*
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}
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)+
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}
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impl $crate::DynamicQuery for $data {
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type Definition = $crate::paste::paste! { [<$data Def>] };
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fn filter_ref(&mut self, def: &Self::Definition) {
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match self {
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$(
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Self::$variant { $( ref mut $field ),* } => {
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$(
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let query = &$crate::paste::paste! { &def.[<$variant:snake:lower>] }.$field;
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$crate::query_def_filter!(@ query, $field, $($qualifier)? ($($type)+));
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)*
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}
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)+
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}
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}
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}
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)
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*
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};
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}
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/// Defines a dynamic query structure.
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#[cfg(not(feature = "serde"))]
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#[macro_export]
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macro_rules! query_def_struct {
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(
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$(
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$(#[$meta:meta])
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*
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$vis:vis $data:ident$((
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$(#[$def_meta:meta])
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+
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))? {
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$(
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$(#[$field_meta:meta])
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*
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$field:ident: $($qualifier:lifetime)? ($($type:tt)+),
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)+
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}
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)
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*
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) => {
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$crate::query_def_internal_struct!(@
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$(
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$(#[$meta])
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*
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$vis $data$((
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$(#[$def_meta])
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+
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))? {
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$(
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$(#[$field_meta])
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*
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$field: $($qualifier)? ($($type)+),
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)+
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}
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)
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*
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);
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};
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}
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/// Defines a dynamic enumerated query structure.
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#[cfg(not(feature = "serde"))]
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#[macro_export]
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macro_rules! query_def_enum {
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(
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$(
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$(#[$meta:meta])
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*
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$vis:vis $data:ident$((
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$(#[$def_meta:meta])
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+
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))? {
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$(
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$(#[$variant_meta:meta])
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*
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$variant:ident$((
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$(#[$variant_def_meta:meta])
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+
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))? {
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$(
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$(#[$field_meta:meta])
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*
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$field:ident: $($qualifier:lifetime)? ($($type:tt)+),
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)*
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}
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),+
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}
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)
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*
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) => {
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$crate::query_def_internal_enum!(@
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$(
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$(#[$meta])
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*
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$vis $data$((
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$(#[$def_meta])
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+
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))? {
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$(
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$(#[$variant_meta])
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*
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$variant$((
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$(#[$variant_def_meta])
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?
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))? {
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$(
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$(#[$field_meta])
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*
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$field: $($qualifier)? ($($type)+),
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)*
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}
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),+
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}
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)
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*
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);
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};
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}
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/// Defines a dynamic query structure.
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#[cfg(feature = "serde")]
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#[macro_export]
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macro_rules! query_def_struct {
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(
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$(
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$(#[$meta:meta])
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*
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$vis:vis $data:ident$((
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$(#[$def_meta:meta])
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+
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))? {
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$(
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$(#[$field_meta:meta])
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*
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$field:ident: $($qualifier:lifetime)? ($($type:tt)+),
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)+
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}
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)
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*
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) => {
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$crate::query_def_internal_struct!(@
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$(
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#[derive(Serialize, Deserialize)]
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$(#[$meta])
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*
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$vis $data(
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#[derive(Serialize, Deserialize)]
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#[serde(default)]
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$(
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$(#[$def_meta])
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+
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)?
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) {
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$(
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#[serde(skip_serializing_if = "Option::is_none")]
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$(#[$field_meta])
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*
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$field: $($qualifier)? ($($type)+),
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)+
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}
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)
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*
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);
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};
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}
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/// Defines a dynamic enumerated query structure.
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#[cfg(feature = "serde")]
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#[macro_export]
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macro_rules! query_def_enum {
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(
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$(
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$(#[$meta:meta])
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*
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$vis:vis $data:ident$((
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$(#[$def_meta:meta])
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+
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))? {
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$(
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$(#[$variant_meta:meta])
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*
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$variant:ident$((
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$(#[$variant_def_meta:meta])
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+
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))? {
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$(
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$(#[$field_meta:meta])
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*
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$field:ident: $($qualifier:lifetime)? ($($type:tt)+),
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)*
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}
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),+
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}
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)
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*
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) => {
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$crate::query_def_internal_enum!(@
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$(
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#[derive(Serialize, Deserialize)]
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$(#[$meta])
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*
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$vis $data(
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#[derive(Serialize, Deserialize)]
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#[serde(default)]
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$(
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$(#[$def_meta])
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+
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)?
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) {
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$(
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$(#[$variant_meta])
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*
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$variant(
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#[derive(Serialize, Deserialize)]
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#[serde(default)]
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$(
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$(#[$variant_def_meta])
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+
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)?
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) {
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$(
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#[serde(skip_serializing_if = "Option::is_none")]
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$(#[$field_meta])
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*
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$field: $($qualifier)? ($($type)+),
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)*
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}
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),+
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}
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)
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*
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);
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};
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}
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