feat(rust): add rust codegen module

This commit includes the Python module responsible for generating code
based on a given schema.

The `schema_salad/rust/salad-core` folder serves as a placeholder for
Rust code logic that will enable document (de)serialization, which is
still a work in progress due to ongoing code refactoring.
The code for this refactoring can be found in the
"giuseppe998e/schema_salad" repository branch.

Author: giuseppe998e

schema_salad/codegen.py

@@ -15,6 +15,7 @@
 from .java_codegen import JavaCodeGen
 from .python_codegen import PythonCodeGen
 from .ref_resolver import Loader
+from .rust_codegen import RustCodeGen
 from .schema import shortname
 from .typescript_codegen import TypeScriptCodeGen
 from .utils import aslist
@@ -99,6 +100,10 @@ def codegen(
         gen = TypeScriptCodeGen(base, target=target, package=pkg, examples=examples)
     elif lang == "dotnet":
         gen = DotNetCodeGen(base, target=target, package=pkg, examples=examples)
+    elif lang == "rust":
+        gen = RustCodeGen(base_uri=base, package=pkg, salad_version=salad_version, target=target)
+        gen.parse(j)
+        return
     else:
         raise SchemaSaladException(f"Unsupported code generation language {lang!r}")
 

schema_salad/rust/.gitignore

@@ -0,0 +1,2 @@
+target/
+Cargo.lock

schema_salad/rust/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "{package_name}"
+version = "{package_version}"
+publish = false
+edition = "2021"
+
+[features]
+# TBD ...
+
+[dependencies]
+# This is supposed to be imported from `crates.io`
+salad-core = { path = "salad-core" }
+

schema_salad/rust/salad-core/.gitkeep

@@ -0,0 +1,2 @@
+// Generated code
+