feat[ux]: compile .vyi files

tests/unit/cli/vyper_compile/test_compile_files.py

@@ -425,3 +425,29 @@ def test_archive_search_path(tmp_path_factory, make_file, chdir_tmp_path):
 
         used_dir = search_paths[-1].stem  # either dir1 or dir2
         assert output_bundle.used_search_paths == [".", "0/" + used_dir]
+
+def test_compile_interface_file(make_file):
+    interface = """
+@view
+@external
+def foo() -> String[1]:
+    ...
+
+@view
+@external
+def bar() -> String[1]:
+    ...
+
+@external
+def baz() -> uint8:
+    ...
+
+    """
+    file = make_file("interface.vyi", interface)
+    compile_files([file], ["ast","annotated_ast","interface","external_interface","abi"])
+
+    with pytest.raises(ValueError):
+        compile_files([file],["bytecode"])
+
+    with pytest.raises(ValueError):
+        compile_files([file],["asm"])

vyper/compiler/__init__.py

@@ -46,6 +46,11 @@
     "opcodes_runtime": output.build_opcodes_runtime_output,
 }
 
+INTERFACE_OUTPUT_FORMATS = ["ast_dict",
+                            "annotated_ast_dict",
+                            "interface",
+                            "external_interface",
+                            "abi"]
 
 UNKNOWN_CONTRACT_NAME = "<unknown>"
 
@@ -121,6 +126,8 @@ def compile_from_file_input(
         for output_format in output_formats:
             if output_format not in OUTPUT_FORMATS:
                 raise ValueError(f"Unsupported format type {repr(output_format)}")
+            elif file_input.resolved_path.suffix == ".vyi" and output_format not in INTERFACE_OUTPUT_FORMATS:
+                raise ValueError(f"Unsupported format for compiling interface: {repr(output_format)}")
             try:
                 formatter = OUTPUT_FORMATS[output_format]
                 ret[output_format] = formatter(compiler_data)

vyper/compiler/output.py

@@ -254,7 +254,8 @@ def build_method_identifiers_output(compiler_data: CompilerData) -> dict:
 
 def build_abi_output(compiler_data: CompilerData) -> list:
     module_t = compiler_data.annotated_vyper_module._metadata["type"]
-    _ = compiler_data.ir_runtime  # ensure _ir_info is generated
+    if compiler_data.contract_path.suffix != ".vyi":
+        _ = compiler_data.ir_runtime  # ensure _ir_info is generated
 
     abi = module_t.interface.to_toplevel_abi_dict()
     if compiler_data.show_gas_estimates:

vyper/compiler/phases.py

@@ -287,7 +287,8 @@ def generate_annotated_ast(vyper_module: vy_ast.Module, input_bundle: InputBundl
     vyper_module = copy.deepcopy(vyper_module)
     with input_bundle.search_path(Path(vyper_module.resolved_path).parent):
         # note: analyze_module does type inference on the AST
-        analyze_module(vyper_module, input_bundle)
+        is_interface = vyper_module.resolved_path.endswith(".vyi")
+        analyze_module(vyper_module, input_bundle, is_interface=is_interface)
 
     return vyper_module