ladybird/Meta/check-style.sh
Itamar 832e9c6e02 LibCpp: Add regression tests for the parser
For each .cpp file in the test suite data, there is a .ast file that
represents the "known good" baseline of the parser result.

Each .cpp file goes through the parser, and the result of
invoking `ASTNode::dump()` on the root node is compared to the
baseline to find regressions.

We also check that there were no parser errors when parsing the .cpp
files.
2021-05-19 23:19:07 +02:00

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#!/usr/bin/env bash
script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
cd "$script_path/.." || exit 1
# Ensure copyright headers match this format and are followed by a blank line:
# /*
# * Copyright (c) YYYY(-YYYY), Whatever
# * ... more of these ...
# *
# * SPDX-License-Identifier: BSD-2-Clause
# */
GOOD_LICENSE_HEADER_PATTERN=$'^/\*\n( \* Copyright \(c\) [0-9]{4}(-[0-9]{4})?, .*\n)+ \*\n \* SPDX-License-Identifier: BSD-2-Clause\n \*/\n\n'
BAD_LICENSE_HEADER_ERRORS=()
LICENSE_HEADER_CHECK_EXCLUDES=(AK/Checked.h AK/Function.h Userland/Libraries/LibC/elf.h Userland/DevTools/HackStudio/LanguageServers/Cpp/Tests/* Userland/Libraries/LibCpp/Tests/*)
# We check that "#pragma once" is present
PRAGMA_ONCE_PATTERN='#pragma once'
MISSING_PRAGMA_ONCE_ERRORS=()
# We make sure that there's a blank line before and after pragma once
GOOD_PRAGMA_ONCE_PATTERN=$'(^|\\S\n\n)#pragma once(\n\n\\S.|$)'
BAD_PRAGMA_ONCE_ERRORS=()
# We check that "#include <LibM/math.h>" is not being used
LIBM_MATH_H_INCLUDE_PATTERN='#include <LibM/math.h>'
LIBM_MATH_H_INCLUDE_ERRORS=()
while IFS= read -r f; do
file_content="$(< "$f")"
if [[ ! "${LICENSE_HEADER_CHECK_EXCLUDES[*]} " =~ $f ]]; then
if [[ ! "$file_content" =~ $GOOD_LICENSE_HEADER_PATTERN ]]; then
BAD_LICENSE_HEADER_ERRORS+=("$f")
fi
fi
if [[ "$file_content" =~ $LIBM_MATH_H_INCLUDE_PATTERN ]]; then
LIBM_MATH_H_INCLUDE_ERRORS+=("$f")
fi
if [[ "$f" =~ \.h$ ]]; then
if [[ ! "$file_content" =~ $PRAGMA_ONCE_PATTERN ]]; then
MISSING_PRAGMA_ONCE_ERRORS+=("$f")
elif [[ ! "$file_content" =~ $GOOD_PRAGMA_ONCE_PATTERN ]]; then
BAD_PRAGMA_ONCE_ERRORS+=("$f")
fi
fi
done < <(git ls-files -- \
'*.cpp' \
'*.h' \
':!:Base' \
':!:Kernel/FileSystem/ext2_fs.h' \
)
exit_status=0
if (( ${#BAD_LICENSE_HEADER_ERRORS[@]} )); then
echo "Files with missing or incorrect license header: ${BAD_LICENSE_HEADER_ERRORS[*]}"
exit_status=1
fi
if (( ${#MISSING_PRAGMA_ONCE_ERRORS[@]} )); then
echo "Header files missing \"#pragma once\": ${MISSING_PRAGMA_ONCE_ERRORS[*]}"
exit_status=1
fi
if (( ${#BAD_PRAGMA_ONCE_ERRORS[@]} )); then
echo "\"#pragma once\" should have a blank line before and after in these files: ${BAD_PRAGMA_ONCE_ERRORS[*]}"
exit_status=1
fi
if (( ${#LIBM_MATH_H_INCLUDE_ERRORS[@]} )); then
echo "\"#include <LibM/math.h>\" should be replaced with just \"#include <math.h>\" in these files: ${LIBM_MATH_H_INCLUDE_ERRORS[*]}"
exit_status=1
fi
exit "$exit_status"