1 files changed, 41 insertions, 1 deletions
diff --git a/rif/src/thread.rs b/rif/src/thread.rs
index c543850..5de9cd5 100644
--- a/rif/src/thread.rs
+++ b/rif/src/thread.rs
@@ -1 +1,41 @@
-pub struct Thread {}
+use crate::{Ingredient, Workstep};
+use std::collections::BTreeSet;
+
+#[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
+pub struct Thread {
+    pub name: String,
+    pub instructions: Vec<Instruction>,
+    pub inputs: BTreeSet<Measure>,
+    pub outputs: BTreeSet<Measure>,
+}
+
+/// An ingredient with precise attached measurements
+#[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
+pub struct Measure {
+    /// Base ingredient from the schema
+    pub ingredient: Ingredient,
+    /// Numerical amount
+    pub amount: usize,
+    /// Scale offset
+    pub scale: u64,
+}
+
+/// Differentiator between raw schema ingredient or work result
+pub enum IngredientLike {
+    /// An ingredient backed by the recipe schema
+    Raw(Ingredient),
+    /// An ingredient produced by a subset of the recipe
+    Combine(Combine),
+}
+
+/// A specific variation of a `Workstep` which acts on Measures
+#[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
+pub struct Instruction {}
+
+/// The result of an instruction, which is not a base ingredient
+#[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
+pub struct Combine {
+    inputs: BTreeSet<IngredientLike>,
+    name: String,
+    slug: String,
+}