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#!/usr/bin/env python3
# Copyright © 2024 Valve Corporation
# SPDX-License-Identifier: MIT
import argparse
import collections
import subprocess
import os
import re
import sys
import tempfile
import textwrap
from pathlib import Path
def trim_blank_lines(string, trailing):
lines = string.split('\n')
string = ''
empty_line = True
for i in range(len(lines)):
line_index = len(lines) - 1 - i if trailing else i
if empty_line and lines[line_index].strip() == '':
continue
write_newline = not empty_line if trailing else line_index < len(lines) - 1
newline = '\n' if write_newline else ''
if trailing:
string = lines[line_index] + newline + string
else:
string += lines[line_index] + newline
empty_line = False
return string
class TestFileChange:
def __init__(self, expected, result):
self.expected = expected
# Apply the indentation of the expectation to the result
indentation = 1000
for expected_line in expected.split('\n'):
if match := re.match(r'^(\s*)\S', expected_line):
line_indentation = len(match.group(1))
if indentation > line_indentation:
indentation = line_indentation
self.result = ''
result = result.split('\n')
for i in range(len(result)):
result_line = result[i]
indentation_str = '' if result_line.strip() == '' else ' '*indentation
self.result += indentation_str + result_line + ('\n' if i < len(result) - 1 else '')
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--build-dir', '-B', required=False)
parser.add_argument('--test-filter', '-f', required=False)
parser.add_argument('--update-all', '-u', action='store_true')
args = parser.parse_args()
bin_path = 'src/compiler/nir/nir_tests'
if args.build_dir:
bin_path = args.build_dir + '/' + bin_path
if not os.path.isfile(bin_path):
print(f'{bin_path} \033[91m does not exist!\033[0m')
exit(1)
build_args = ['meson', 'compile']
if args.build_dir:
build_args.append(f'-C{args.build_dir}')
subprocess.run(build_args)
test_args = [bin_path]
if args.test_filter:
test_args.append(f'--gtest_filter={args.test_filter}')
env = os.environ.copy()
if args.update_all:
env['NIR_TEST_DUMP_SHADERS'] = 'true'
output = subprocess.run(test_args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True, env=env)
expected_pattern = re.compile(r'BEGIN EXPECTED\(([\d\w\W/.-_]+)\)')
expectations = collections.defaultdict(list)
current_file = None
current_result = None
current_expected = None
inside_result = False
inside_expected = False
# Parse the output of the test binary and gather the changed shaders.
for output_line in output.stdout.split('\n'):
if output_line.startswith('BEGIN RESULT'):
inside_result = True
current_result = ''
continue
if output_line.startswith('BEGIN EXPECTED'):
match = expected_pattern.match(output_line)
current_file = match.group(1).removeprefix('../')
inside_expected = True
current_expected = ''
continue
if output_line.startswith('END'):
if current_result is not None and current_expected is not None:
# remove trailing and leading blank lines
current_result = trim_blank_lines(current_result, True)
current_result = trim_blank_lines(current_result, False)
current_expected = trim_blank_lines(current_expected, True)
current_expected = trim_blank_lines(current_expected, False)
expectations[current_file].append(TestFileChange(current_expected, current_result))
current_result = None
current_expected = None
inside_result = False
inside_expected = False
continue
if inside_result:
current_result += output_line + '\n'
if inside_expected:
current_expected += output_line + '\n'
patches = []
# Generate patches for the changed shaders.
for file in expectations:
changes = expectations[file]
updated_test_file = ''
with open(file) as test_file:
updated_test_file = str(test_file.read())
for change in changes:
updated_test_file = updated_test_file.replace(change.expected, change.result)
# change.expected == change.result can be the case when using NIR_TEST_DUMP_SHADERS.
if change.expected in updated_test_file and change.expected != change.result:
print(f'Duplicate test case in {file}!')
exit(1)
with tempfile.NamedTemporaryFile(delete_on_close=False) as tmp:
tmp.write(bytes(updated_test_file, encoding="utf-8"))
tmp.close()
diff = subprocess.run(
['git', 'diff', '--no-index', file, tmp.name],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True,
)
patch = diff.stdout.replace(tmp.name, '/' + file)
print(patch)
patches.append(patch)
if len(patches) != 0:
sys.stdout.write('\033[96mApply the changes listed above?\033[0m [Y/n]')
response = None
try:
response = input()
except KeyboardInterrupt:
print()
sys.exit(1)
if response in ['', 'y', 'Y']:
for patch in patches:
apply = subprocess.Popen(
['git', 'apply', '--allow-empty'],
stdin=subprocess.PIPE,
)
apply.communicate(input=bytes(patch, encoding="utf-8"))
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