From fb0b60ff1287832d7a6ca9246392f0344e8d532b Mon Sep 17 00:00:00 2001
From: Andrei Homescu <ahomescu@google.com>
Date: Thu, 24 Aug 2023 21:23:36 +0000
Subject: [PATCH] cargo2rulesmk.py: Remove Python match usage

The script uses Python match which was introduced
in Python 3.10. The sandbox only has 3.8, so we need
to remove match so the script can run.

Bug: 281857510
Test: Run in sandbox on bitflags crate
Change-Id: Id03b0e02f8593b551f2aca201fe0ed2659d58d21
---
 scripts/cargo2rulesmk.py | 34 ++++++++++++++++------------------
 1 file changed, 16 insertions(+), 18 deletions(-)

diff --git a/scripts/cargo2rulesmk.py b/scripts/cargo2rulesmk.py
index b0f4cb890..3a68131d2 100755
--- a/scripts/cargo2rulesmk.py
+++ b/scripts/cargo2rulesmk.py
@@ -513,19 +513,18 @@ class Crate(object):
 
     def dump_trusty_module(self):
         """Dump one or more module definitions, depending on crate_types."""
-        match self.crate_types:
-            case [_single]:
-                pass
-            case multiple if "test" in multiple:
+        if len(self.crate_types) > 1:
+            if "test" in self.crate_types:
                 self.write("\nERROR: multiple crate types cannot include test type")
                 return
-            case multiple if "lib" in multiple:
+
+            if "lib" in self.crate_types:
                 print(f"### WARNING: crate {self.crate_name} has multiple "
-                      f"crate types ({str(multiple)}). Treating as 'lib'")
+                      f"crate types ({str(self.crate_types)}). Treating as 'lib'")
                 self.crate_types = ["lib"]
-            case unsupported:
+            else:
                 self.write("\nERROR: don't know how to handle crate types of "
-                           f"crate {self.crate_name}: {str(unsupported)}")
+                           f"crate {self.crate_name}: {str(self.crate_types)}")
                 return
 
         self.dump_single_type_trusty_module()
@@ -672,16 +671,15 @@ class Crate(object):
             if hasattr(self.runner.args, "module_add_implicit_deps_reason"):
                 self.write(self.runner.args.module_add_implicit_deps_reason)
 
-            match self.runner.args.module_add_implicit_deps:
-                case True | "yes":
-                    self.write("MODULE_ADD_IMPLICIT_DEPS := true")
-                case False | "no":
-                    self.write("MODULE_ADD_IMPLICIT_DEPS := false")
-                case other:
-                    sys.exit(
-                        "ERROR: invalid value for module_add_implicit_deps: " +
-                        str(other)
-                    )
+            if self.runner.args.module_add_implicit_deps in [True, "yes"]:
+                self.write("MODULE_ADD_IMPLICIT_DEPS := true")
+            elif self.runner.args.module_add_implicit_deps in [False, "no"]:
+                self.write("MODULE_ADD_IMPLICIT_DEPS := false")
+            else:
+                sys.exit(
+                    "ERROR: invalid value for module_add_implicit_deps: " +
+                    str(self.runner.args.module_add_implicit_deps)
+                )
 
 
 class Runner(object):