79 lines
1.9 KiB
Rust
79 lines
1.9 KiB
Rust
use kaitai::*;
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#[derive(Default, Debug)]
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struct Grandparent<'s> {
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value: &'s [u8],
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parent: Option<Parent<'s>>,
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}
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impl<'r, 's: 'r> KStruct<'r, 's> for Grandparent<'s> {
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type Root = Self;
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type ParentStack = (KStructUnit);
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fn read<S: KStream>(
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&mut self,
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_io: &'s S,
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_root: Option<&'r Self::Root>,
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_parent: TypedStack<Self::ParentStack>,
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) -> KResult<'s, ()> {
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self.value = _io.read_bytes(1)?;
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let mut tmp = Parent::default();
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tmp.read(_io, Some(self), _parent.push(self));
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self.parent = Some(tmp);
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Ok(())
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}
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}
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#[derive(Default, Debug)]
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struct Parent<'s> {
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value: &'s [u8],
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child: Option<Child>,
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}
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impl<'r, 's: 'r> KStruct<'r, 's> for Parent<'s> {
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type Root = Grandparent<'s>;
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type ParentStack = (&'r Grandparent<'s>, <Grandparent<'s> as KStruct<'r, 's>>::ParentStack);
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fn read<S: KStream>(
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&mut self,
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_io: &'s S,
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_root: Option<&'r Self::Root>,
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_parent: TypedStack<Self::ParentStack>,
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) -> KResult<'s, ()> {
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self.value = _io.read_bytes(1)?;
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let mut tmp = Child::default();
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tmp.read(_io, _root, _parent.push(self));
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self.child = Some(tmp);
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Ok(())
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}
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}
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#[derive(Default, Debug)]
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struct Child {
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gp_value: u8,
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}
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impl<'r, 's: 'r> KStruct<'r, 's> for Child {
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type Root = Grandparent<'s>;
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type ParentStack = (&'r Parent<'s>, <Parent<'s> as KStruct<'r, 's>>::ParentStack);
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fn read<S: KStream>(
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&mut self,
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_io: &'s S,
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_root: Option<&'r Self::Root>,
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_parent: TypedStack<Self::ParentStack>,
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) -> KResult<'s, ()> {
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self.gp_value = _parent.pop().peek().value[0];
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Ok(())
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}
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}
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#[test]
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fn basic_parse() {
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let bytes = [0u8, 1];
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let r = BytesReader::new(&bytes);
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let mut gp = Grandparent::default();
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gp.read(&r, None, KStructUnit::parent_stack());
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} |