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docs: [spec] Remove references to causal cone and Order edges from Input #762

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merged 2 commits into from
Jan 3, 2024

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@acl-cqc acl-cqc commented Jan 2, 2024

I believe the question of causal cones was definitively resolved by #468, and the codebase seems clear on that point - however, I just stumbled across this I-believe-erroneous reference in the spec. (FWIW, searching through the spec for "causal" has only one other occurrence, which appears to explicitly say we don't need this rule.)

@acl-cqc acl-cqc requested a review from cqc-alec January 2, 2024 12:24
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Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0edee65) 84.03% compared to head (c59982f) 84.10%.

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@@            Coverage Diff             @@
##             main     #762      +/-   ##
==========================================
+ Coverage   84.03%   84.10%   +0.06%     
==========================================
  Files          67       67              
  Lines       13189    13189              
  Branches    13189    13189              
==========================================
+ Hits        11083    11092       +9     
+ Misses       1320     1311       -9     
  Partials      786      786              

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This relates to #743 .

For self-consistency there are a couple of other sections of text that should be changed at the same time:

  • Just above here, the statement "In a data dependency subgraph, a valid ordering of operations can be achieved by topologically sorting the nodes starting from Input with respect to the Value and Order edges." is no longer necessarily true and should be removed.
  • In the description of InsertConstIgnore, the instruction to "Also add an Order edge from the Input node under P to n." should be removed.

(I think the implementation also needs updating, but that can be done in a separate PR.)

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acl-cqc commented Jan 2, 2024

Good spots, thanks @cqc-alec. I wanted to rejig the statement about topsort to refer to DSGs but realized it was waaay before we'd even defined that....so moved it and have tidied up a few more. Thankfully I don't think we have actually implemented InsertConstIgnore in code yet!

@acl-cqc acl-cqc changed the title docs: [spec] Remove reference to causal cone docs: [spec] Remove references to causal cone and Order edges from Input Jan 3, 2024
@acl-cqc acl-cqc added this pull request to the merge queue Jan 3, 2024
Merged via the queue into main with commit f522552 Jan 3, 2024
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@acl-cqc acl-cqc deleted the spec/no_causal_cone branch January 3, 2024 10:55
@github-actions github-actions bot mentioned this pull request Jan 3, 2024
ss2165 pushed a commit that referenced this pull request Jan 3, 2024
…put (#762)

I believe the question of causal cones was definitively resolved by
#468, and the codebase seems clear on that point - however, I just
stumbled across this I-believe-erroneous reference in the spec. (FWIW,
searching through the spec for "causal" has only one other occurrence,
which appears to explicitly say we don't need this rule.)
github-merge-queue bot pushed a commit that referenced this pull request Jan 15, 2024
## 🤖 New release
* `quantinuum-hugr`: 0.1.0

<details><summary><i><b>Changelog</b></i></summary><p>

<blockquote>

## 0.1.0 (2024-01-15)

### Bug Fixes

- Subgraph boundaries with copies
([#440](#440))
- [**breaking**] Use internal tag for SumType enum serialisation
([#462](#462))
- Check kind before unwrap in insert_identity
([#475](#475))
- Allow for variables to get solved in inference
([#478](#478))
- In IdentityInsertion add noop to correct parent
([#477](#477))
- Failing release tests ([#485](#485))
- [**breaking**] Serialise `Value`, `PrimValue`, and `TypeArg` with
internal tags ([#496](#496))
- Serialise custom constants with internal tag
([#502](#502))
- [**breaking**] Reduce max int width in arithmetic extension to 64
([#504](#504))
- HugrView::get_function_type
([#507](#507))
- TODO in resolve_extension_ops: copy across input_extensions
([#510](#510))
- Use given input extensions in `define_function`
([#524](#524))
- Lessen requirements for hugrs in outline_cfg
([#528](#528))
- Make unification logic less strict
([#538](#538))
- Simple replace incorrectly copying metadata
([#545](#545))
- Account for self-referencial constraints
([#551](#551))
- Consider shunted metas when comparing equality
([#555](#555))
- Join labels in issue workflow
([#563](#563))
- Comment out broken priority code
([#562](#562))
- Handling of issues with no priority label
([#573](#573))
- Don't insert temporary wires when extracting a subgraph
([#582](#582))
- Improve convexity checking and fix test
([#585](#585))
- Ignore input->output links in
SiblingSubgraph::try_new_dataflow_subgraph
([#589](#589))
- Enforce covariance of SiblingMut::RootHandle
([#594](#594))
- Erratic stack overflow in infer.rs (live_var)
([#638](#638))
- Work harder in variable instantiation
([#591](#591))
- Actually add the error type to prelude
([#672](#672))
- Serialise dynamically computed opaqueOp signatures
([#690](#690))
- FuncDefns don't require that their extensions match their children
([#688](#688))
- Binary compute_signature returning a PolyFuncType with binders
([#710](#710))
- Use correct number of args for int ops
([#723](#723))
- [**breaking**] Add serde tag to TypeParam enum
([#722](#722))
- Allow widening and narrowing to same width.
([#735](#735))
- Case node should not have an external signature
([#749](#749))
- [**breaking**] Normalize input/output value/static/other ports in
`OpType` ([#783](#783))
- No dataflow_signature for block types
([#792](#792))
- Ignore unsupported test in miri
([#794](#794))
- Include schema rather than read file
([#807](#807))

### Documentation

- Add operation constraint to quantum extension
([#543](#543))
- Coverage check section in DEVELOPMENT.md
([#648](#648))
- Remove "quantum extension" from HUGR spec.
([#694](#694))
- Improve crate-level docs, including example code.
([#698](#698))
- Spec cleanups and clarifications
([#742](#742))
- Spec clarifications ([#738](#738))
- Spec updates ([#741](#741))
- [spec] Remove references to causal cone and Order edges from Input
([#762](#762))
- Mention experimental inference in readme
([#800](#800))
- Collection of spec updates for 0.1
([#801](#801))
- Add schema v0 ([#805](#805))
- Update spec wrt. polymorphism
([#791](#791))

### Features

- Derive things for builder structs
([#229](#229))
- Return a slice of types from the signature
([#238](#238))
- Move `dot_string` to `HugrView`
([#271](#271))
- [**breaking**] Change `TypeParam::USize` to `TypeParam::BoundedNat`
and use in int extensions
([#445](#445))
- TKET2 compatibility requirements
([#450](#450))
- Split methods between `HugrMut` and `HugrMutInternals`
([#441](#441))
- Add `HugrView::node_connections` to get all links between nodes
([#460](#460))
- Location information in extension inference error
([#464](#464))
- Add T, Tdg, X gates ([#466](#466))
- [**breaking**] Add `ApplyResult` associated type to `Rewrite`
([#472](#472))
- Implement rewrite `IdentityInsertion`
([#474](#474))
- Instantiate inferred extensions
([#461](#461))
- Default DFG builders to open extension sets
([#473](#473))
- Some helper methods ([#482](#482))
- Extension inference for conditional nodes
([#465](#465))
- Add ConvexChecker ([#487](#487))
- Add clippy lint for mut calls in a debug_assert
([#488](#488))
- Default more builder methods to open extension sets
([#492](#492))
- Port is serializable ([#489](#489))
- More general portgraph references
([#494](#494))
- Add extension deltas to CFG ops
([#503](#503))
- Implement petgraph traits on Hugr
([#498](#498))
- Make extension delta a parameter of CFG builders
([#514](#514))
- [**breaking**] SiblingSubgraph does not borrow Hugr
([#515](#515))
- Validate TypeArgs to ExtensionOp
([#509](#509))
- Derive Debug & Clone for `ExtensionRegistry`.
([#530](#530))
- Const nodes are built with some extension requirements
([#527](#527))
- Some python errors and bindings
([#533](#533))
- Insert_hugr/insert_view return node map
([#535](#535))
- Add `SiblingSubgraph::try_from_nodes_with_checker`
([#547](#547))
- PortIndex trait for undirected port parameters
([#553](#553))
- Insert/extract subgraphs from a HugrView
([#552](#552))
- Add `new_array` operation to prelude
([#544](#544))
- Add a `DataflowParentID` node handle
([#559](#559))
- Make TypeEnum and it's contents public
([#558](#558))
- Optional direction check when querying a port index
([#566](#566))
- Extension inference for CFGs
([#529](#529))
- Better subgraph verification errors
([#587](#587))
- Compute affected nodes for `SimpleReplacement`
([#600](#600))
- Move `SimpleReplace::invalidation_set` to the `Rewrite` trait
([#602](#602))
- [**breaking**] Resolve extension ops (mutating Hugr) in
(infer_and_->)update_validate
([#603](#603))
- Add accessors for node index and const values
([#605](#605))
- [**breaking**] Expose the value of ConstUsize
([#621](#621))
- Nicer debug and display for core types
([#628](#628))
- [**breaking**] Static checking of Port direction
([#614](#614))
- Builder and HugrMut add_op_xxx default to open extensions
([#622](#622))
- [**breaking**] Add panicking integer division ops
([#625](#625))
- Add hashable `Angle` type to Quantum extension
([#608](#608))
- [**breaking**] Remove "rotations" extension.
([#645](#645))
- Port.as_directed to match on either direction
([#647](#647))
- Impl GraphRef for PetgraphWrapper
([#651](#651))
- Provide+implement Replace API
([#613](#613))
- Require the node's metadata to always be a Map
([#661](#661))
- [**breaking**] Polymorphic function types (inc OpDefs) using dyn trait
([#630](#630))
- Make prelude error type public
([#669](#669))
- Shorthand for retrieving custom constants from `Const`, `Value`
([#679](#679))
- [**breaking**] HugrView API improvements
([#680](#680))
- Make FuncDecl/FuncDefn polymorphic
([#692](#692))
- [**breaking**] Simplify `SignatureFunc` and add custom arg validation.
([#706](#706))
- [**breaking**] Drop the `pyo3` feature
([#717](#717))
- [**breaking**] `OpEnum` trait for common opdef functionality
([#721](#721))
- MakeRegisteredOp trait for easier registration
([#726](#726))
- Getter for `PolyFuncType::body`
([#727](#727))
- `Into<OpType>` for custom ops
([#731](#731))
- Always require a signature in `OpaqueOp`
([#732](#732))
- Values (and hence Consts) know their extensions
([#733](#733))
- [**breaking**] Use ConvexChecker trait
([#740](#740))
- Custom const for ERROR_TYPE
([#756](#756))
- Implement RemoveConst and RemoveConstIgnore
([#757](#757))
- Constant folding implemented for core and float extension
([#769](#769))
- Constant folding for arithmetic conversion operations
([#720](#720))
- DataflowParent trait for getting inner signatures
([#782](#782))
- Constant folding for logic extension
([#793](#793))
- Constant folding for list operations
([#795](#795))
- Add panic op to prelude
([#802](#802))
- Const::from_bool function
([#803](#803))

### HugrMut

- Validate nodes for set_metadata/get_metadata_mut, too
([#531](#531))

### HugrView

- Validate nodes, and remove Base
([#523](#523))

### Miscellaneous Tasks

- [**breaking**] Update portgraph 0.10 and pyo3 0.20
([#612](#612))
- [**breaking**] Hike MSRV to 1.75
([#761](#761))

### Performance

- Use lazy static definittion for prelude registry
([#481](#481))

### Refactor

- Move `rewrite` inside `hugr`, `Rewrite` -> `Replace` implementing new
'Rewrite' trait ([#119](#119))
- Use an excluded upper bound instead of max log width.
([#451](#451))
- Add extension info to `Conditional` and `Case`
([#463](#463))
- `ExtensionSolution` only consists of input extensions
([#480](#480))
- Remove builder from more DFG tests
([#490](#490))
- Separate hierarchy views
([#500](#500))
- [**breaking**] Use named struct for float constants
([#505](#505))
- Allow NodeType::new to take any Into<Option<ExtensionSet>>
([#511](#511))
- Move apply_rewrite from Hugr to HugrMut
([#519](#519))
- Use SiblingSubgraph in SimpleReplacement
([#517](#517))
- CFG takes a FunctionType
([#532](#532))
- Remove check_custom_impl by inlining into check_custom
([#604](#604))
- Insert_subgraph just return HashMap, make InsertionResult new_root
compulsory ([#609](#609))
- [**breaking**] Rename predicate to TupleSum/UnitSum
([#557](#557))
- Simplify infer.rs/report_mismatch using early return
([#615](#615))
- Move the core types to their own module
([#627](#627))
- Change &NodeType->&OpType conversion into op() accessor
([#623](#623))
- Infer.rs 'fn results' ([#631](#631))
- Be safe ([#637](#637))
- NodeType constructors, adding new_auto
([#635](#635))
- Constraint::Plus stores an ExtensionSet, which is a BTreeSet
([#636](#636))
- [**breaking**] Remove `SignatureDescription`
([#644](#644))
- [**breaking**] Remove add_op_<posn> by generalizing add_node_<posn>
with "impl Into" ([#642](#642))
- Rename accidentally-changed Extension::add_node_xxx back to add_op
([#659](#659))
- [**breaking**] Remove quantum extension
([#670](#670))
- Use type schemes in extension definitions wherever possible
([#678](#678))
- [**breaking**] Flatten `Prim(Type/Value)` in to parent enum
([#685](#685))
- [**breaking**] Rename `new_linear()` to `new_endo()`.
([#697](#697))
- Replace NodeType::signature() with io_extensions()
([#700](#700))
- Validate ExtensionRegistry when built, not as we build it
([#701](#701))
- [**breaking**] One way to add_op to extension
([#704](#704))
- Remove Signature struct
([#714](#714))
- Use `MakeOpDef` for int_ops
([#724](#724))
- [**breaking**] Use enum op traits for floats + conversions
([#755](#755))
- Avoid dynamic dispatch for non-folding operations
([#770](#770))
- Simplify removeconstignore verify
([#768](#768))
- [**breaking**] Unwrap BasicBlock enum
([#781](#781))
- Make clear const folding only for leaf ops
([#785](#785))
- [**breaking**] `s/RemoveConstIgnore/RemoveLoadConstant`
([#789](#789))
- Put extension inference behind a feature gate
([#786](#786))

### SerSimpleType

- Use Vec not TypeRow ([#381](#381))

### SimpleReplace+OutlineCfg

- Use HugrMut methods rather than .hierarchy/.graph
([#280](#280))

### Testing

- Update inference test to not use DFG builder
([#550](#550))
- Strengthen "failing_sccs_test", rename to "sccs" as it's not failing!
([#660](#660))
- [**breaking**] Improve coverage in signature and validate
([#643](#643))
- Use insta snapshots to add dot_string coverage
([#682](#682))
- Miri ignore file-opening test
([#684](#684))
- Unify the serialisation tests
([#730](#730))
- Add schema validation to roundtrips
([#806](#806))

### `ConstValue

- :F64` and `OpaqueOp::new`
([#206](#206))

### Cleanup

- Remove outdated comment
([#536](#536))

### Cosmetic

- Format + remove stray TODO
([#444](#444))

### Doc

- Crate name as README title + add reexport
([#199](#199))

### S/EdgeKind

- :Const/EdgeKind::Static/
([#201](#201))

### Simple_replace.rs

- Use HugrMut::remove_node, includes clearing op_types
([#242](#242))

### Spec

- Remove "Draft 3" from title of spec document.
([#590](#590))
- Rephrase confusing paragraph about TailLoop inputs/outputs
([#567](#567))

### Src/ops/validate.rs

- Common-up some type row calculations
([#254](#254))
</blockquote>


</p></details>

---
This PR was generated with
[release-plz](https://github.com/MarcoIeni/release-plz/).

---------

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Agustín Borgna <121866228+aborgna-q@users.noreply.github.com>
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