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#[macro_export]
macro_rules! _probor_define_var {
($name:ident) => {
let mut $name = None;
};
}
#[macro_export]
macro_rules! _probor_require_field {
($name:ident #$x:tt optional) => {
$name
};
($name:ident #$x:tt) => {
try!($name.ok_or(
$crate::DecodeError::AbsentField(stringify!($name))));
};
($name:ident optional) => {
$name
};
($name:ident) => {
try!($name.ok_or(
$crate::DecodeError::AbsentField(stringify!($name))));
};
}
#[macro_export]
macro_rules! _probor_parse_fields_num {
($decoder:expr, $idx:expr, {}) => {
try!($decoder.skip()
.map_err(|e| $crate::DecodeError::SkippingError(e)));
};
($decoder:expr, $idx:expr, {
$item:ident => ( #$n:tt $($tail:tt)* ),
$( $nitem:ident => ( $($ntail:tt)* ), )*
}) => {
if $idx == _probor_index!($n) {
$item = try!($crate::Decodable::decode_opt($decoder)
.map_err(|e| $crate::DecodeError::BadFieldValue(
stringify!($item), Box::new(e))));
} else {
_probor_parse_fields_num!($decoder, $idx,
{ $( $nitem => ( $($ntail)* ), )* });
}
};
($decoder:expr, $idx:expr, {
$item:ident => ( $($tail:tt)* ),
$( $nitem:ident => ( $($ntail:tt)* ), )*
}) => {
_probor_parse_fields_num!($decoder, $idx,
{ $( $nitem => ( $($ntail)* ), )* });
};
}
#[macro_export]
macro_rules! _probor_dec_struct {
($decoder:expr, { $( $item:ident => ( $($props:tt)* ), )* } ) => {
let ( $($item,)* ) = {
$(_probor_define_var!($item);)*
match $decoder.array() {
Ok(array_len) => {
for idx in 0..array_len {
(idx+1);
_probor_parse_fields_num!($decoder, idx,
{ $( $item => ( $($props)* ), )* });
}
}
Err($crate::_cbor::DecodeError::UnexpectedType {
datatype: $crate::_cbor::types::Type::Null, .. }) => {
return Ok(None);
}
Err($crate::_cbor::DecodeError::UnexpectedType {
datatype: $crate::_cbor::types::Type::Object,
info: inf @ 0...30
}) => {
let object_num = try!($decoder.kernel().unsigned(inf)
.map_err(|e| $crate::DecodeError::WrongType(
"array or object expected (e1)", e)));
_probor_dec_named!($decoder, object_num,
{ $( $item => ($($props)* ), )* });
}
Err(e) => {
return Err($crate::DecodeError::WrongType(
"array or object expected (e2)", e));
}
}
( $( _probor_require_field![ $item $($props)* ], )* )
};
}
}
#[macro_export]
macro_rules! _probor_uint_type {
($val:expr) => {
$val == $crate::_cbor::types::Type::UInt8
|| $val == $crate::_cbor::types::Type::UInt16
|| $val == $crate::_cbor::types::Type::UInt32
|| $val == $crate::_cbor::types::Type::UInt64
}
}
#[macro_export]
macro_rules! _probor_dec_named {
($decoder:expr, $nfields:expr,
{ $( $item:ident => ( $($props:tt)* ), )* } )
=> {
for _ in 0..$nfields {
match $decoder.text() {
$(
Ok(ref name) if &name[..] == stringify!($item) => {
$item = try!($crate::Decodable::decode_opt($decoder)
.map_err(|e| $crate::DecodeError::BadFieldValue(
stringify!($item), Box::new(e))));
}
)*
Ok(_) => {
try!($decoder.skip().map_err(|e|
$crate::DecodeError::SkippingError(e)));
}
Err($crate::_cbor::DecodeError::UnexpectedType {
datatype: ty, info: inf }) if _probor_uint_type!(ty)
=> {
let idx = try!($decoder.kernel().u64(&(ty, inf))
.map_err(|e| $crate::DecodeError::WrongType(
"array or object expected (e3)", e)));
(idx+1);
_probor_parse_fields_num!($decoder, idx,
{ $( $item => ( $($props)* ), )* });
}
Err(e) => {
return Err($crate::DecodeError::WrongType(
"array or object expected (e4)", e));
}
}
}
}
}
#[macro_export]
macro_rules! probor_dec_struct {
($decoder:expr, { $( $item:ident => ($($props:tt)* ), )* } ) => {
_probor_dec_struct!($decoder, { $( $item => ($($props)* ), )* });
};
}