refactor(hydroflow_plus)!: move input APIs back to being on locations

docs/docs/hydroflow_plus/aggregations.mdx

@@ -21,7 +21,7 @@ To specify this **window**, Hydroflow+ offers two operators, `tick_batch()` and
 For example, consider a pipelined aggregation across two processes. We can sum up elements on the first process in a batched manner using `tick_batch()`, then sum up the results on the second process in an unbounded manner using `all_ticks()`:
 
 ```rust
-let root_stream = flow.source_stream(&process, q!(1..=10));
+let root_stream = process.source_stream(q!(1..=10));
 root_stream
     .tick_batch()
     .fold(q!(|| 0), q!(|acc, x| *acc += x))

docs/docs/hydroflow_plus/clusters.mdx

@@ -23,7 +23,7 @@ This API follows the same pattern as processes, where a cluster spec represents
 Instantiating streams on clusters uses the same APIs as streams: `source_iter` and `source_stream` are both available. But when using these APIs, the root streams will be instantiated on _all_ instances in the cluster.
 
 ```rust
-let stream = flow.source_iter(&cluster, q!(vec![1, 2, 3]));
+let stream = cluster.source_iter(q!(vec![1, 2, 3]));
 
 stream.for_each(q!(|x| println!("{}", x)))
 // will print 1, 2, 3 on **each** instance
@@ -36,7 +36,7 @@ Elements in a cluster are identified by a **cluster ID** (a `u32`). To get the I
 
 This can then be passed into `source_iter` to load the IDs into the graph.
 ```rust
-let stream = flow.source_iter(&process, cluster.members()).cloned();
+let stream = process.source_iter(cluster.members()).cloned();
 ```
 
 ### One-to-Many
@@ -45,36 +45,36 @@ When sending data from a process to a cluster, the source must be a stream of tu
 This is useful for partitioning data across instances. For example, we can partition a stream of elements in a round-robin fashion by using `enumerate` to add a sequence number to each element, then using `send_bincode` to send each element to the instance with the matching sequence number:
 ```rust
 let cluster_ids = cluster.members();
-let stream = flow.source_iter(&process, q!(vec![123, 456, 789]))
+let stream = process.source_iter(q!(vec![123, 456, 789]))
     .enumerate()
     .map(q!(|(i, x)| (
         i % cluster_ids.len() as u32,
         x
     )))
-    .send_bincode(cluster);
+    .send_bincode(&cluster);
 ```
 
 To broadcast data to all instances in a cluster, use `broadcast_{bincode,bytes}`, which acts as a shortcut for the cross product.
 
 ```rust
-let stream = flow.source_iter(&process, q!(vec![123, 456, 789]))
-    .broadcast_bincode(cluster);
+let stream = process.source_iter(q!(vec![123, 456, 789]))
+    .broadcast_bincode(&cluster);
 ```
 
 ### Many-to-One
 In the other direction, sending data from a cluster to a process, we have a stream of elements of type `T` at the sender but on the recipient side we get a stream of tuples of the form `(u32, T)`, where the `u32` is the ID of the instance that sent the element. The elements received from different instances will be interleaved.
 
 This is useful for aggregating data from multiple instances into a single stream. For example, we can use `send_bincode` to send data from all instances to a single process, and then print them all out:
 ```rust
-let stream = flow.source_iter(&cluster, q!(vec![123, 456, 789]))
-    .send_bincode(process)
+let stream = cluster.source_iter(q!(vec![123, 456, 789]))
+    .send_bincode(&process)
     .for_each(q!(|(id, x)| println!("{}: {}", id, x)));
 ```
 
 If you don't care which instance sent the data, you can use `send_{bincode,bytes}_interleaved`, where the recipient receives a stream of `T` elements, but the elements received from different instances will be interleaved.
 ```rust
-let stream = flow.source_iter(&cluster, q!(vec![123, 456, 789]))
-    .send_bincode_interleaved(process)
+let stream = cluster.source_iter(q!(vec![123, 456, 789]))
+    .send_bincode_interleaved(&process)
     .for_each(q!(|x| println!("{}", x)));
 ```
 
@@ -83,7 +83,7 @@ Finally, when sending data from one cluster to another (or to itself as in distr
 
 We can use the same shortcuts as before. For example, we can use `broadcast_bincode_interleaved` to send data from all instances in a cluster to all instances in another cluster, and then print them all out:
 ```rust
-let stream = flow.source_iter(&cluster1, q!(vec![123, 456, 789]))
-    .broadcast_bincode_interleaved(cluster2)
+let stream = cluster1.source_iter(q!(vec![123, 456, 789]))
+    .broadcast_bincode_interleaved(&cluster2)
     .for_each(q!(|x| println!("{}", x)));
 ```

docs/docs/hydroflow_plus/cycles.mdx

@@ -10,18 +10,18 @@ Because streams are represented as values when constructing a Hydroflow+ graph,
 We can create a cycle by using the `cycle` method on flow with a process or cluster. This returns a tuple of two values: a `HfCycle` value that can be used to complete the cycle later and the placeholder stream.
 
 ```rust
-let (complete_cycle, cycle_placeholder) = flow.cycle(&process);
+let (complete_cycle, cycle_placeholder) = process.cycle();
 ```
 
 For example, consider the classic graph reachability problem, which computes the nodes reachable from a given set of roots in a directed graph. This can be modeled as an iterative fixpoint computation where we start with the roots, then repeatedly add the children of each node to the set of reachable nodes until we reach a fixpoint.
 
 In Hydroflow+, we can implement this using cycles:
 
 ```rust
-let roots = flow.source_stream(&process, roots);
-let edges = flow.source_stream(&process, edges);
+let roots = process.source_stream(roots);
+let edges = process.source_stream(edges);
 
-let (complete_reached_nodes, reached_nodes) = flow.cycle(&process);
+let (complete_reached_nodes, reached_nodes) = process.cycle();
 
 let reach_iteration = roots
     .union(&reached_nodes)

docs/docs/hydroflow_plus/process_streams.mdx

@@ -41,7 +41,7 @@ Root streams are created using methods available on an an instantiated process.
 To create a stream from a Rust iterator, use `source_iter`. This is useful for loading static data into the graph. Each element of the iterator will be emitted _exactly once_ in the _first tick_ of execution (see [Aggregations and Ticks](./aggregations.mdx)).
 
 ```rust
-let stream = flow.source_iter(&process, q!(vec![1, 2, 3]));
+let stream = process.source_iter(q!(vec![1, 2, 3]));
 ```
 
 #### `source_stream`
@@ -52,7 +52,7 @@ pub fn my_flow<'a, D: Deploy<'a>>(
     ...,
     my_stream: RuntimeData<impl Stream<Item = i32>>
 ) {
-    let stream = flow.source_stream(&process, my_stream);
+    let stream = process.source_stream(my_stream);
     ...
 }
 ```
@@ -66,13 +66,13 @@ If sending a type that supports serialization using `serde`, use `send_bincode`,
 let process0 = flow.process(process_spec);
 let process1 = flow.process(process_spec);
 
-let stream0 = flow.source_iter(&process0, ...);
-let stream1 = stream0.send_bincode(process1);
+let stream0 = process0.source_iter(...);
+let stream1 = stream0.send_bincode(&process1);
 ```
 
 To use custom serializers, you can use the `send_bytes` method to send a stream of `Bytes` values.
 
 ```rust
-let stream0 = flow.source_iter(&process0, ...);
-let stream1 = stream0.send_bytes(process1);
+let stream0 = process0.source_iter(...);
+let stream1 = stream0.send_bytes(&process1);
 ```

docs/docs/hydroflow_plus/quickstart/clusters.mdx

@@ -44,7 +44,7 @@ pub fn broadcast(
 When sending data between individual processes, we used the `send_bincode` operator. When sending data from a process to a cluster, we can use the `broadcast_bincode` operator instead.
 
 ```rust
-let data = flow.source_iter(&leader, q!(0..10));
+let data = leader.source_iter(q!(0..10));
 data
     .broadcast_bincode(&workers)
     .for_each(q!(|n| println!("{}", n)));

hydroflow_plus/src/builder/built.rs

@@ -10,7 +10,7 @@ use crate::location::{Cluster, ExternalProcess, Process};
 use crate::HfCompiled;
 
 pub struct BuiltFlow<'a> {
-    pub(super) ir: Vec<HfPlusLeaf<'a>>,
+    pub(super) ir: Vec<HfPlusLeaf>,
     pub(super) processes: Vec<usize>,
     pub(super) clusters: Vec<usize>,
     pub(super) used: bool,
@@ -27,13 +27,13 @@ impl<'a> Drop for BuiltFlow<'a> {
 }
 
 impl<'a> BuiltFlow<'a> {
-    pub fn ir(&self) -> &Vec<HfPlusLeaf<'a>> {
+    pub fn ir(&self) -> &Vec<HfPlusLeaf> {
         &self.ir
     }
 
     pub fn optimize_with(
         mut self,
-        f: impl FnOnce(Vec<HfPlusLeaf<'a>>) -> Vec<HfPlusLeaf<'a>>,
+        f: impl FnOnce(Vec<HfPlusLeaf>) -> Vec<HfPlusLeaf>,
     ) -> BuiltFlow<'a> {
         self.used = true;
         BuiltFlow {

hydroflow_plus/src/builder/deploy.rs

@@ -20,7 +20,7 @@ use crate::location::{
 use crate::{Cluster, ClusterSpec, Deploy, HfCompiled, Process, ProcessSpec};
 
 pub struct DeployFlow<'a, D: LocalDeploy<'a>> {
-    pub(super) ir: Vec<HfPlusLeaf<'a>>,
+    pub(super) ir: Vec<HfPlusLeaf>,
     pub(super) nodes: HashMap<usize, D::Process>,
     pub(super) externals: HashMap<usize, D::ExternalProcess>,
     pub(super) clusters: HashMap<usize, D::Cluster>,
@@ -69,7 +69,7 @@ impl<'a, D: Deploy<'a>> DeployFlow<'a, D> {
         self.used = true;
 
         let mut seen_tees: HashMap<_, _> = HashMap::new();
-        let mut ir_leaves_networked: Vec<HfPlusLeaf> = std::mem::take(&mut self.ir)
+        let mut flow_state_networked: Vec<HfPlusLeaf> = std::mem::take(&mut self.ir)
             .into_iter()
             .map(|leaf| {
                 leaf.compile_network::<D>(
@@ -85,7 +85,7 @@ impl<'a, D: Deploy<'a>> DeployFlow<'a, D> {
         let extra_stmts = self.extra_stmts(env);
 
         HfCompiled {
-            hydroflow_ir: build_inner(&mut ir_leaves_networked),
+            hydroflow_ir: build_inner(&mut flow_state_networked),
             extra_stmts,
             _phantom: PhantomData,
         }
@@ -132,7 +132,7 @@ impl<'a, D: Deploy<'a, CompileEnv = ()>> DeployFlow<'a, D> {
         self.used = true;
 
         let mut seen_tees_instantiate: HashMap<_, _> = HashMap::new();
-        let mut ir_leaves_networked: Vec<HfPlusLeaf> = std::mem::take(&mut self.ir)
+        let mut flow_state_networked: Vec<HfPlusLeaf> = std::mem::take(&mut self.ir)
             .into_iter()
             .map(|leaf| {
                 leaf.compile_network::<D>(
@@ -145,7 +145,7 @@ impl<'a, D: Deploy<'a, CompileEnv = ()>> DeployFlow<'a, D> {
             })
             .collect();
 
-        let mut compiled = build_inner(&mut ir_leaves_networked);
+        let mut compiled = build_inner(&mut flow_state_networked);
         let mut extra_stmts = self.extra_stmts(&());
         let mut meta = D::Meta::default();
 
@@ -201,7 +201,7 @@ impl<'a, D: Deploy<'a, CompileEnv = ()>> DeployFlow<'a, D> {
         }
 
         let mut seen_tees_connect = HashMap::new();
-        for leaf in ir_leaves_networked {
+        for leaf in flow_state_networked {
             leaf.connect_network(&mut seen_tees_connect);
         }
 
@@ -229,7 +229,7 @@ impl<'a, D: Deploy<'a>> DeployResult<'a, D> {
         self.processes.get(&id).unwrap()
     }
 
-    pub fn get_cluster<C>(&self, c: &Cluster<C>) -> &D::Cluster {
+    pub fn get_cluster<C>(&self, c: &Cluster<'a, C>) -> &D::Cluster {
         let id = match c.id() {
             LocationId::Cluster(id) => id,
             _ => panic!("Cluster ID expected"),