59 lines
1.6 KiB
Rust
59 lines
1.6 KiB
Rust
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// Copyright 2016 Mozilla
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
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// this file except in compliance with the License. You may obtain a copy of the
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// License at http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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///! This module defines core types that support the transaction processor.
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extern crate edn;
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use self::edn::types::Value;
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use self::edn::symbols::NamespacedKeyword;
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#[derive(Clone, Debug, PartialEq)]
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pub enum Entid {
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Entid(i64),
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Ident(NamespacedKeyword),
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}
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#[derive(Clone, Debug, PartialEq)]
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pub struct LookupRef {
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pub a: Entid,
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// TODO: consider boxing to allow recursive lookup refs.
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pub v: Value,
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}
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#[derive(Clone, Debug, PartialEq)]
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pub enum EntidOrLookupRef {
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Entid(Entid),
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LookupRef(LookupRef),
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}
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#[derive(Clone, Debug, PartialEq)]
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pub enum ValueOrLookupRef {
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Value(Value),
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LookupRef(LookupRef),
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}
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#[derive(Clone, Debug, PartialEq)]
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pub enum Entity {
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Add {
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e: EntidOrLookupRef,
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a: Entid,
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v: ValueOrLookupRef,
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tx: Option<Entid>,
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},
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Retract {
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e: EntidOrLookupRef,
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a: Entid,
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v: ValueOrLookupRef,
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},
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RetractAttribute { e: EntidOrLookupRef, a: Entid },
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RetractEntity { e: EntidOrLookupRef },
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}
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