Prohibiting sets

src/rsprocess/element.rs

@@ -0,0 +1,52 @@
+use serde::{Serialize, Deserialize};
+use std::fmt;
+
+use super::translator::PrintableWithTranslator;
+
+pub type IdType = u32;
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+pub enum IdState {
+    Positive,
+    Negative
+}
+
+impl fmt::Display for IdState {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+	match self {
+	    Self::Positive => write!(f, "+"),
+	    Self::Negative => write!(f, "-")
+	}
+    }
+}
+
+impl std::ops::Not for IdState {
+    type Output = Self;
+
+    fn not(self) -> Self::Output {
+	match self {
+	    Self::Positive => Self::Negative,
+	    Self::Negative => Self::Positive
+	}
+    }
+}
+
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+pub struct PositiveType {
+    pub id: IdType,
+    pub state: IdState
+}
+
+impl PrintableWithTranslator for PositiveType {
+    fn print(&self,
+	     f: &mut fmt::Formatter,
+	     translator: &super::translator::Translator)
+	     -> std::fmt::Result {
+	write!(f,
+	       "{}{}",
+	       self.state,
+	       translator.decode(self.id).unwrap_or("Missing".into())
+	)
+    }
+}