feat: Python bindings for hugr-model.

Cargo.toml

@@ -10,6 +10,7 @@ members = [
     "hugr-cli",
     "hugr-model",
     "hugr-llvm",
+    "hugr-py",
 ]
 default-members = ["hugr", "hugr-core", "hugr-passes", "hugr-cli", "hugr-model"]
 
@@ -84,6 +85,7 @@ pest_derive = "2.7.12"
 pretty = "0.12.4"
 pretty_assertions = "1.4.1"
 zstd = "0.13.2"
+pyo3 = "0.23.4"
 
 [profile.dev.package]
 insta.opt-level = 3

hugr-core/src/std_extensions/arithmetic/float_types.rs

@@ -66,7 +66,7 @@ impl std::ops::Deref for ConstF64 {
 impl ConstF64 {
     /// Name of the constructor for creating constant 64bit floats.
     #[cfg_attr(not(feature = "model_unstable"), allow(dead_code))]
-    pub(crate) const CTR_NAME: &'static str = "arithmetic.float.const-f64";
+    pub(crate) const CTR_NAME: &'static str = "arithmetic.float.const_f64";
 
     /// Create a new [`ConstF64`]
     pub fn new(value: f64) -> Self {

hugr-core/tests/model.rs

@@ -4,7 +4,7 @@ use std::str::FromStr;
 
 use hugr::std_extensions::std_reg;
 use hugr_core::{export::export_hugr, import::import_hugr};
-use hugr_model::v0 as model;
+use hugr_model::v0::{self as model};
 
 fn roundtrip(source: &str) -> String {
     let bump = model::bumpalo::Bump::new();

hugr-core/tests/snapshots/model__roundtrip_const.snap

@@ -12,6 +12,8 @@ expression: "roundtrip(include_str!(\"../../hugr-model/tests/fixtures/model-cons
 
 (import arithmetic.int.const)
 
+(import arithmetic.float.const_f64)
+
 (import core.const.adt)
 
 (import arithmetic.int.types.int)
@@ -24,8 +26,6 @@ expression: "roundtrip(include_str!(\"../../hugr-model/tests/fixtures/model-cons
 
 (import core.adt)
 
-(import arithmetic.float.const-f64)
-
 (define-func
   example.bools
   (core.fn [] [(core.adt [[] []]) (core.adt [[] []])] (ext))
@@ -69,7 +69,7 @@ expression: "roundtrip(include_str!(\"../../hugr-model/tests/fixtures/model-cons
               (arithmetic.int.const 6 3)
               (arithmetic.int.const 6 4)
               (arithmetic.int.const 6 5)])
-           (arithmetic.float.const-f64 -3.0)]))
+           (arithmetic.float.const_f64 -3.0)]))
       [] [%0]
       (signature
         (core.fn
@@ -88,7 +88,7 @@ expression: "roundtrip(include_str!(\"../../hugr-model/tests/fixtures/model-cons
         []
         [arithmetic.float.types.float64 arithmetic.float.types.float64]
         (ext)))
-    ((core.load_const _ _ (arithmetic.float.const-f64 1.0)) [] [%0]
+    ((core.load_const _ _ (arithmetic.float.const_f64 1.0)) [] [%0]
       (signature (core.fn [] [arithmetic.float.types.float64] (ext))))
     ((core.load_const
         _

hugr-model/Cargo.toml

@@ -29,6 +29,7 @@ pest_derive = { workspace = true }
 pretty = { workspace = true }
 smol_str = { workspace = true, features = ["serde"] }
 thiserror.workspace = true
+pyo3 = { workspace = true, optional = true }
 
 [lints]
 workspace = true

hugr-model/src/v0/ast/mod.rs

@@ -29,6 +29,8 @@ use super::{LinkName, Literal, RegionKind, SymbolName, VarName};
 
 mod parse;
 mod print;
+#[cfg(feature = "pyo3")]
+mod python;
 mod resolve;
 mod view;
 

hugr-model/src/v0/ast/parse.rs

@@ -444,3 +444,4 @@ impl_from_str!(Param, param, parse_param);
 impl_from_str!(Module, module, parse_module);
 impl_from_str!(SeqPart, part, parse_seq_part);
 impl_from_str!(Literal, literal, parse_literal);
+impl_from_str!(Symbol, symbol, parse_symbol);

hugr-model/src/v0/ast/print.rs

@@ -426,6 +426,7 @@ impl_display!(Param, print_param);
 impl_display!(Term, print_term);
 impl_display!(SeqPart, print_seq_part);
 impl_display!(Literal, print_literal);
+impl_display!(Symbol, print_symbol);
 
 impl Display for VarName {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {