Major fixes and new features

venv/lib/python3.12/site-packages/mypyc/test/test_analysis.py

@@ -0,0 +1,77 @@
+"""Test runner for data-flow analysis test cases."""
+
+from __future__ import annotations
+
+import os.path
+
+from mypy.errors import CompileError
+from mypy.test.config import test_temp_dir
+from mypy.test.data import DataDrivenTestCase
+from mypyc.analysis import dataflow
+from mypyc.common import TOP_LEVEL_NAME
+from mypyc.ir.func_ir import all_values
+from mypyc.ir.ops import Value
+from mypyc.ir.pprint import format_func, generate_names_for_ir
+from mypyc.test.testutil import (
+    ICODE_GEN_BUILTINS,
+    MypycDataSuite,
+    assert_test_output,
+    build_ir_for_single_file,
+    use_custom_builtins,
+)
+from mypyc.transform import exceptions
+
+files = ["analysis.test"]
+
+
+class TestAnalysis(MypycDataSuite):
+    files = files
+    base_path = test_temp_dir
+    optional_out = True
+
+    def run_case(self, testcase: DataDrivenTestCase) -> None:
+        """Perform a data-flow analysis test case."""
+
+        with use_custom_builtins(os.path.join(self.data_prefix, ICODE_GEN_BUILTINS), testcase):
+            try:
+                ir = build_ir_for_single_file(testcase.input)
+            except CompileError as e:
+                actual = e.messages
+            else:
+                actual = []
+                for fn in ir:
+                    if fn.name == TOP_LEVEL_NAME and not testcase.name.endswith("_toplevel"):
+                        continue
+                    exceptions.insert_exception_handling(fn)
+                    actual.extend(format_func(fn))
+                    cfg = dataflow.get_cfg(fn.blocks)
+                    args: set[Value] = set(fn.arg_regs)
+                    name = testcase.name
+                    if name.endswith("_MaybeDefined"):
+                        # Forward, maybe
+                        analysis_result = dataflow.analyze_maybe_defined_regs(fn.blocks, cfg, args)
+                    elif name.endswith("_Liveness"):
+                        # Backward, maybe
+                        analysis_result = dataflow.analyze_live_regs(fn.blocks, cfg)
+                    elif name.endswith("_MustDefined"):
+                        # Forward, must
+                        analysis_result = dataflow.analyze_must_defined_regs(
+                            fn.blocks, cfg, args, regs=all_values(fn.arg_regs, fn.blocks)
+                        )
+                    elif name.endswith("_BorrowedArgument"):
+                        # Forward, must
+                        analysis_result = dataflow.analyze_borrowed_arguments(fn.blocks, cfg, args)
+                    else:
+                        assert False, "No recognized _AnalysisName suffix in test case"
+
+                    names = generate_names_for_ir(fn.arg_regs, fn.blocks)
+
+                    for key in sorted(
+                        analysis_result.before.keys(), key=lambda x: (x[0].label, x[1])
+                    ):
+                        pre = ", ".join(sorted(names[reg] for reg in analysis_result.before[key]))
+                        post = ", ".join(sorted(names[reg] for reg in analysis_result.after[key]))
+                        actual.append(
+                            "%-8s %-23s %s" % ((key[0].label, key[1]), "{%s}" % pre, "{%s}" % post)
+                        )
+            assert_test_output(testcase, actual, "Invalid source code output")