util/glsl2spirv: add type annotations

Which are all clean

Reviewed-by: Luis Felipe Strano Moraes <luis.strano@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19449>

src/util/glsl2spirv.py

@@ -21,15 +21,29 @@
 
 # Converts GLSL shader to SPIR-V library 
 
+from __future__ import annotations
 import argparse
 import subprocess
 import os
+import typing as T
+
+if T.TYPE_CHECKING:
+
+    class Arguments(T.Protocol):
+        input: str
+        output: str
+        create_entry: T.Optional[str]
+        glsl_ver: T.Optional[str]
+        Olib: bool
+        extra: T.Optional[str]
+        vn: str
+        stage: str
 
 class ShaderCompileError(RuntimeError):
     def __init__(self, *args):
         super(ShaderCompileError, self).__init__(*args)
 
-def get_args():
+def get_args() -> Arguments:
     parser = argparse.ArgumentParser()
     parser.add_argument('input', help="Name of input file.")
     parser.add_argument('output', help="Name of output file.")
@@ -64,7 +78,7 @@ def get_args():
     return args
 
 
-def create_include_guard(lines, filename):
+def create_include_guard(lines: T.List[str], filename: str) -> T.List[str]:
     filename = filename.replace('.', '_')
     upper_name = filename.upper()
 
@@ -81,7 +95,7 @@ def create_include_guard(lines, filename):
     return guard_head + lines + guard_tail
 
 
-def convert_to_static_variable(lines, varname):
+def convert_to_static_variable(lines: T.List[str], varname: str) -> T.List[str]:
     for idx, l in enumerate(lines):
         if l.find(varname) != -1:
             lines[idx] = "static " + lines[idx]
@@ -89,7 +103,7 @@ def convert_to_static_variable(lines, varname):
     raise RuntimeError(f'Did not find {varname}, this is unexpected')
 
 
-def override_version(lines, glsl_version):
+def override_version(lines: T.List[str], glsl_version: str) -> T.List[str]:
     for idx, l in enumerate(lines):
         if l.find('#version ') != -1:
             lines[idx] = "#version {}\n".format(glsl_version)
@@ -97,7 +111,7 @@ def override_version(lines, glsl_version):
     raise RuntimeError('Did not find #version directive, this is unexpected')
 
 
-def postprocess_file(args):
+def postprocess_file(args: Arguments) -> None:
     with open(args.output, "r") as r:
         lines = r.readlines()
 
@@ -111,7 +125,7 @@ def postprocess_file(args):
             w.writelines(lines)
 
 
-def preprocess_file(args, origin_file):
+def preprocess_file(args: Arguments, origin_file: T.TextIO) -> str:
     with open(origin_file.name + ".copy", "w") as copy_file:
         lines = origin_file.readlines()
 
@@ -126,7 +140,7 @@ def preprocess_file(args, origin_file):
         return copy_file.name
 
 
-def process_file(args):
+def process_file(args: Arguments) -> None:
     with open(args.input, "r") as infile:
         copy_file = preprocess_file(args, infile)
 
@@ -169,7 +183,7 @@ def process_file(args):
             os.remove(copy_file)
 
 
-def main():
+def main() -> None:
     args = get_args()
     process_file(args)