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use libimagstore::store::Entry;
use builtin::header::field_path::FieldPath;
use builtin::header::field_predicate::FieldPredicate;
use builtin::header::field_predicate::Predicate;
use filters::failable::filter::FailableFilter;
use failure::Fallible as Result;
use failure::Error;
use toml::Value;
struct EqPred {
expected: Value
}
impl Predicate for EqPred {
fn evaluate(&self, v: &Value) -> bool {
self.expected == *v
}
}
pub struct FieldEq {
filter: FieldPredicate<EqPred>,
}
impl FieldEq {
pub fn new(path: FieldPath, expected_value: Value) -> FieldEq {
FieldEq {
filter: FieldPredicate::new(path, Box::new(EqPred { expected: expected_value })),
}
}
}
impl FailableFilter<Entry> for FieldEq {
type Error = Error;
fn filter(&self, e: &Entry) -> Result<bool> {
self.filter.filter(e)
}
}