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Add algorithm to match spec on data

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Matthias Beyer 2015-10-30 16:50:43 +01:00
parent f9cc0e41ce
commit caee02c333
1 changed files with 39 additions and 0 deletions
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39
src/storage/file.rs
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@ -96,3 +96,42 @@ impl Display for MatchError {
}
pub fn match_header_spec(spec: &FileHeaderSpec, data: &FileHeaderData)
-> Option<MatchError>
{
let tpl = (spec, data);
match tpl {
(&FileHeaderSpec::Null, &FileHeaderData::Null) => { }
(&FileHeaderSpec::Bool, &FileHeaderData::Bool(_)) => { }
(&FileHeaderSpec::Integer, &FileHeaderData::Integer(_)) => { }
(&FileHeaderSpec::UInteger, &FileHeaderData::UInteger(_)) => { }
(&FileHeaderSpec::Float, &FileHeaderData::Float(_)) => { }
(&FileHeaderSpec::Text, &FileHeaderData::Text(_)) => { }
(
&FileHeaderSpec::Key{name: ref kname, value_type: ref vtype},
&FileHeaderData::Key{name: ref n, value: ref val}
) => {
if kname != n {
// error
}
return match_header_spec(&*vtype, &*val);
}
(
&FileHeaderSpec::Array{allowed_types: ref vtypes},
&FileHeaderData::Array{values: ref vs}
) => {
for (t, v) in vtypes.iter().zip(vs.iter()) {
let res = match_header_spec(t, v);
if res.is_some() {
return res;
}
}
}
_ => { unreachable!() }
}
None
}