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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; version
// 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
use libimagstore::store::Entry;
use builtin::header::field_path::FieldPath;
use builtin::header::field_predicate::FieldPredicate;
use builtin::header::field_predicate::Predicate;
use filters::filter::Filter;
use toml::Value;
pub enum Type {
Array,
Boolean,
Float,
Integer,
None,
String,
Table,
}
impl Type {
fn matches(&self, v: &Value) -> bool {
match (self, v) {
(&Type::String, &Value::String(_)) |
(&Type::Integer, &Value::Integer(_)) |
(&Type::Float, &Value::Float(_)) |
(&Type::Boolean, &Value::Boolean(_)) |
(&Type::Array, &Value::Array(_)) |
(&Type::Table, &Value::Table(_)) => true,
_ => false,
}
}
}
struct IsTypePred {
ty: Type
}
impl Predicate for IsTypePred {
fn evaluate(&self, v: Value) -> bool {
self.ty.matches(&v)
}
}
pub struct FieldIsType {
filter: FieldPredicate<IsTypePred>,
}
impl FieldIsType {
pub fn new(path: FieldPath, expected_type: Type) -> FieldIsType {
FieldIsType {
filter: FieldPredicate::new(path, Box::new(IsTypePred { ty: expected_type })),
}
}
}
impl Filter<Entry> for FieldIsType {
fn filter(&self, e: &Entry) -> bool {
self.filter.filter(e)
}
}
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