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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.0-or-later
# SPDX-FileCopyrightText: 2021 Marco Trevisan <marco.trevisan@canonical.com>
set -e
if [ -n "$SELFTEST" ]; then
unset SELFTEST
set -x
self="$(realpath "$0")"
test_paths=()
trap 'rm -rf -- "${test_paths[@]}"' EXIT
test_env() {
local code_path="$(mktemp -t -d "check-pch-XXXXXX")"
test_paths+=("$code_path")
cd "$code_path"
mkdir gjs gi
echo "#include <stlib.h>" >> gjs/gjs_pch.hh
}
expect_success() {
"$self" || exit 1
}
expect_failure() {
"$self" && exit 1 || true
}
test_env
echo "#include <stlib.h>" >> gi/code.c
expect_success
test_env
echo "#include <stlib.h>" >> gi/code.c
echo "#include <stdio.h>" >> gi/code.c
expect_failure
test_env
echo "#include <stlib.h>" >> gi/code.c
echo "#include <invalid1.h>" >> gi/code1.cpp
echo "#include <invalid2.h>" >> gi/code1.c
expect_failure
test_env
echo "#include <stlib.h>" >> gi/code.c
echo "#include <invalid.h> // check-pch: ignore" >> gi/other-code.c
expect_success
test_env
echo "#include <stlib.h>" >> gi/code.c
echo "#include <invalid1.h> // NOcheck-pch: ignore" >> gi/code.c
echo "#include <invalid2.h> // check-pch: ignoreNO" >> gi/code.c
echo "#include <invalid3.h> // check-pch: ignore, yes" >> gi/other-code.c
expect_failure
test_env
echo "#include <invalid.h>" >> gjs/gjs_pch.hh
echo "#include <stlib.h>" >> gi/code.c
expect_failure
test_env
echo "#include <invalid.h> // check-pch: ignore, yes" >> gjs/gjs_pch.hh
echo "#include <stlib.h>" >> gi/code.c
expect_success
test_env
echo "#include <invalid.h>" >> gi/ignored-file.hh
echo "#include <stlib.h>" >> gi/code.c
expect_success
test_env
echo '# include <stlib.h>' >> gi/code.c
echo '# include "local/header.h"' >> gi/code.c
expect_success
test_env
echo "#include <stlib.h>" >> gi/code.c
echo '#include "local/header.h"' >> gjs/gjs_pch.hh
expect_failure
test_env
echo "# include <stlib.h>" >> gi/code.c
echo "# include <other/include.h>" >> gi/code.c
echo " # include <other/include.h>" >> gi/other-file.c
echo "# include <other/include.h>" >> gjs/gjs_pch.hh
expect_success
test_env
echo "# include <stlib.h>" >> gi/code.c
echo "# include <invalid.h>/*comment*/" >> gi/invalid-file.c
expect_failure
test_env
echo "# include <stlib.h>" >> gi/code.c
echo " # include <other/include.h>" >> gi/other-file.c
expect_failure
test_env
echo "#include <stlib.h>" >> gi/code.c
echo "//#include <invalid.h>" >> gi/invalid-file.c
echo "// #include <invalid.h>" >> gi/invalid-file.c
echo "//#include <invalid.h>" >> gjs/gjs_pch.hh
expect_success
test_env
echo "#include <stlib.h>" >> gi/code.c
echo "/*comment*/#include <invalid.h>/*comment*/" >> gi/invalid-file.c
# This is not supported: expect_failure
test_env
echo "#include <stlib.h>" >> gi/code.c
echo "# /*FIXME */ include /*Why should you do it?*/ <invalid.h>" >> gi/invalid-file.c
# This is not supported: expect_failure
exit 0
fi
PCH_FILES=(gjs/gjs_pch.hh)
IGNORE_COMMENT="check-pch: ignore"
CODE_PATHS=(gjs gi)
INCLUDED_FILES=(
\*.c
\*.cpp
\*.h
)
grep_include_lines() {
grep -h '^\s*#\s*include\s*[<"][^>"]\+[>"]' "$@" | uniq
}
grep_header_file() {
local header_file="${1//./\\.}"
shift
grep -qs "^\s*#\s*include\s*[<\"]${header_file}[>\"]" "$@"
}
# List all the included headers
mapfile -t includes < <(grep_include_lines \
-r \
$(printf -- "--include %s\n" "${INCLUDED_FILES[@]}") \
"${CODE_PATHS[@]}" \
| grep -vw "$IGNORE_COMMENT")
missing=()
for h in "${includes[@]}"; do
if [[ "$h" =~ \#[[:space:]]*include[[:space:]]*\<([^\>]+)\> ]]; then
header_file="${BASH_REMATCH[1]}"
if ! grep_header_file "$header_file" "${PCH_FILES[@]}"; then
echo "Header <$header_file> not added to PCH file"
missing+=("$header_file")
fi
fi
done
if [ "${#missing[@]}" -gt 0 ]; then
echo
echo "Headers not added to the PCH file found, please add to ${PCH_FILES[*]}"
echo "Otherwise you can ignore them with a leading comment such as"
echo " #include <${missing[0]}> // $IGNORE_COMMENT"
exit 1
fi
# And now, the other way around...
mapfile -t pch_includes < <(grep_include_lines \
"${PCH_FILES[@]}" \
| grep -vw "$IGNORE_COMMENT")
unneeded=()
for h in "${pch_includes[@]}"; do
if [[ "$h" =~ \#[[:space:]]*include[[:space:]]*[\<\"]([^\>\"]+)[\>\"] ]]; then
header_file="${BASH_REMATCH[1]}"
if ! grep_header_file "$header_file" -r \
$(printf -- "--include %s\n" "${INCLUDED_FILES[@]}") \
"${CODE_PATHS[@]}"; then
echo "Header <$header_file> included in one PCH is not used in code"
unneeded+=("$header_file")
fi
fi
done
if [ "${#unneeded[@]}" -gt 0 ]; then
echo
echo "Unneeded headers added to the PCH file found, remove from ${PCH_FILES[*]}"
echo "Otherwise you can ignore them with a leading comment such as"
echo " #include <${unneeded[0]}> // $IGNORE_COMMENT"
exit 1
fi
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