Adding example languages

Author: ftomassetti

.gitignore

@@ -14,3 +14,4 @@ __pycache__
 /antlr-*.jar
 .DS_Store
 .coverage
+out

Requirements.txt

@@ -1,7 +1,13 @@
 antlr4-python3-runtime==4.11.1
+astor==0.8.1
 certifi==2025.1.31
 charset-normalizer==3.4.1
+click==8.1.8
+flake8==7.1.2
 idna==3.10
 lionweb-python==0.1.8
+mccabe==0.7.0
+pycodestyle==2.12.1
+pyflakes==3.2.0
 requests==2.32.3
 urllib3==2.3.0

pylasu/lionweb/__init__.py

@@ -0,0 +1,72 @@
+import ast
+from pathlib import Path
+from symtable import Class
+from typing import cast
+
+import astor  # Install with `pip install astor`
+import click
+import os
+import sys
+
+from lionwebpython.language import Language, Concept, Interface
+from lionwebpython.language.classifier import Classifier
+from lionwebpython.language.primitive_type import PrimitiveType
+from lionwebpython.lionweb_version import LionWebVersion
+from lionwebpython.serialization.serialization_provider import SerializationProvider
+
+# Define the function AST
+func_def = ast.FunctionDef(
+    name="hello_world",
+    args=ast.arguments(
+        posonlyargs=[], args=[], kwonlyargs=[], kw_defaults=[], defaults=[]
+    ),
+    body=[
+        ast.Expr(value=ast.Call(
+            func=ast.Name(id="print", ctx=ast.Load()),
+            args=[ast.Constant(value="Hello, world!")], keywords=[]
+        ))
+    ],
+    decorator_list=[],
+)
+
+# # Convert AST to code
+# module = ast.Module(body=[func_def], type_ignores=[])
+# generated_code = astor.to_source(module)
+#
+# print(generated_code)
+#
+
+@click.command()
+@click.argument("lionweb-language", type=click.Path(exists=True, dir_okay=False, readable=True))
+@click.argument("output", type=click.Path(exists=False, file_okay=False, writable=True))
+def main(lionweb_language, output):
+    """Simple CLI that processes a file and writes results to a directory."""
+    serialization = SerializationProvider.get_standard_json_serialization(LionWebVersion.V2023_1)
+    click.echo(f"📄 Processing file: {lionweb_language}")
+    with open(lionweb_language, "r", encoding="utf-8") as f:
+        content = f.read()
+        language = cast(Language, serialization.deserialize_string_to_nodes(content)[0])
+
+    module = ast.Module(body=[], type_ignores=[])
+    for element in language.get_elements():
+        if isinstance(element, Concept):
+            classdef = ast.ClassDef(element.get_name(), bases=[],  # No parent classes
+                keywords=[],
+                body=[ast.Pass()],
+                decorator_list=[])
+            module.body.append(classdef)
+        elif isinstance(element, Interface):
+            pass
+        elif isinstance(element, PrimitiveType):
+            pass
+        else:
+            raise ValueError(f"Unsupported {element}")
+    click.echo(f"📂 Saving results to: {output}")
+    generated_code = astor.to_source(module)
+    output_path = Path(output)
+    output_path.mkdir(parents=True, exist_ok=True)
+    with Path(f"{output}/ast.py").open("w", encoding="utf-8") as f:
+        f.write(generated_code)
+
+if __name__ == "__main__":
+    main()