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#!/bin/sh
# Take an input file which contains a header of the form:
# /* Template: [template name] */
# followed by a blank line, then one or more sections of the form:
# /*
# [Error message|‘No error’]
# */
# {
# [Code]
# }
#
# Sections are separated by ‘/*’ on a line of its own. The code must not contain
# C-style comments (‘/* … */’), but can contain C++-style ones (‘// …’).
#
# The wrapper script takes each section and wraps the code in a main() function
# with some standard variables and reference count handling provided by the
# named template. It then compiles
# the code using Clang with Tartan, and checks the compiler output against
# the expected error message. If the expected error message is ‘No error’ it
# asserts there’s no error.
input_filename=$1
temp_dir=`mktemp -d`
tests_dir=`dirname $0`
tartan=${tests_dir}/../scripts/tartan
tartan_plugin=${tests_dir}/../clang-plugin/.libs/libtartan.so
echo "Reading input from ${input_filename}."
echo "Using temporary directory ${temp_dir}."
echo "Using Tartan from ${tartan}."
echo "Using plugin from ${tartan_plugin}."
test_status=0
# Before starting, work out the compiler’s system include paths.
# Thanks to: http://stackoverflow.com/a/17940271/2931197
system_includes=`echo | cpp -Wp,-v 2>&1 | grep '^[[:space:]]' | \
sed -e 's/^[[:space:]]*/-isystem/' | tr "\n" ' '`
# Extract the template name.
template_name=`head -n 1 "${input_filename}" | \
sed -n 's/\/\*[[:space:]]*Template:\(.*\)\*\//\1/p' | \
tr -d ' '`
echo "Using template ${template_name}."
# Split the input file up into sections, delimiting on ‘/*’ on a line by itself.
tail -n +3 "${input_filename}" > "${temp_dir}/${input_filename}.tail"
csplit --keep-files --elide-empty-files --silent \
--prefix="${temp_dir}/${input_filename}_" \
--suffix-format='%02d.c' \
"${temp_dir}/${input_filename}.tail" '/^\/\*/' '{*}'
echo ""
num=0
while [[ -f `printf "${temp_dir}/${input_filename}_%02d.c" ${num}` ]]; do
section_filename=`printf ${temp_dir}/${input_filename}_%02d.c ${num}`
expected_error_filename=`printf ${temp_dir}/${input_filename}_%02d.expected ${num}`
actual_error_filename=`printf ${temp_dir}/${input_filename}_%02d.actual ${num}`
echo "${section_filename}:"
echo "-------"
echo ""
echo " - Building section file ${section_filename}."
echo " - Outputting to error files ${expected_error_filename} and ${actual_error_filename}."
# Wrap the section’s code with a prefix and suffix.
(cat "${template_name}.head.c"
cat "${section_filename}"
cat "${template_name}.tail.c"
) > $section_filename.tmp
mv -f $section_filename.tmp $section_filename
num=$((num + 1))
# Extract the expected comment.
sed -n '/^\/\*/n; s/^ \* \(.*\)/\1/p' < $section_filename > $expected_error_filename
if [[ $(<"${expected_error_filename}") == "No error" ]]; then
echo " - Expecting no error"
expect_error=false
else
echo " - Expecting an error"
expect_error=true
fi
# Run the compiler.
TARTAN_PLUGIN=$tartan_plugin \
$tartan \
-cc1 -analyze -std=c89 -Wno-visibility \
`pkg-config --cflags glib-2.0` \
$system_includes \
$section_filename > $actual_error_filename 2>&1
# Compare the errors.
if $expect_error; then
# Expecting an error. Check that the expected errors are a
# subset of the actual errors, to allow for spurious Clang
# warnings because generated code is hard.
grep_failed=0
while read line
do
grep -F "${line}" "${actual_error_filename}" >/dev/null
grep_status=$?
if [ $grep_status -ne 0 ]; then
echo " * Non-matching line:" 1>&2
echo "${line}" 1>&2
grep_failed=1
fi
done < "${expected_error_filename}"
if [ $grep_failed = 1 ]; then
echo " * Error: Expected compiler error was not seen." 1>&2
echo " - Expected:" 1>&2
cat "${expected_error_filename}" 1>&2
echo "" 1>&2
echo " - Actual:" 1>&2
cat "${actual_error_filename}" 1>&2
test_status=1
fi
else
# Expecting no error.
if [[ -s "${actual_error_filename}" ]]; then
echo " * Error: Compiler error when none was expected." 1>&2
echo " - Actual:" 1>&2
cat "${actual_error_filename}" 1>&2
test_status=1
fi
fi
echo ""
echo ""
done
# Exit status. Leave the temporary directory alone on failure.
if [[ $test_status -eq 0 ]]; then
rm -rf ${temp_dir}
fi
exit $test_status
|
