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// Copyright (C) 2017 Jesse Jones // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 3, or (at your option) // any later version. // // This program 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 General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software Foundation, // Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. //! `IntValue` and `FloatValue` and `StringValue` are simple wrappers around an //! [`Effector`]. They don't do very much but they assist in creating type safe //! [`Component`] structs. See the [`set_value`] macro for an example. use effector::*; pub struct IntValue { } pub struct FloatValue { } pub struct StringValue { } impl IntValue { /// This is normally called via the set_value! macro. pub fn set_value(&self, effector: &mut Effector, name: &str, value: i64) { effector.set_int(name, value); } } impl FloatValue { /// This is normally called via the set_value! macro. pub fn set_value(&self, effector: &mut Effector, name: &str, value: f64) { effector.set_float(name, value); } } impl StringValue { /// This is normally called via the set_value! macro. pub fn set_value(&self, effector: &mut Effector, name: &str, value: &str) { effector.set_string(name, value); } } /// Type safe way to update the simulation [`Store`]. /// /// # Examples /// /// ``` /// use score::*; /// /// struct InterfaceComponent /// { /// tx_packets: IntValue, /// } /// /// fn reset(iface: InterfaceComponent, mut effector: Effector) /// { /// // The effector is actually the object that is updated. /// // When the component finishes processing the current event /// // the simulation will apply all the effects from effectors. /// set_value!(effector, iface.tx_packets = 0); /// } /// ``` #[macro_export] macro_rules! set_value { ($effector:ident, $target:ident . $field:ident = $value:expr) => ({ $target.$field.set_value(&mut $effector, stringify!($field), $value); }); }