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// Copyright (c) Herb Sutter
// SPDX-License-Identifier: CC-BY-NC-ND-4.0
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//===========================================================================
// main - driver
//===========================================================================
#include "to_cpp1.h"
static auto flag_debug_output = false;
static cpp2::cmdline_processor::register_flag cmd_debug(
9,
"debug",
"Emit compiler debug output",
[]{ flag_debug_output = true; }
);
auto main(
int argc,
char* argv[]
)
-> int
{
using namespace cpp2;
cmdline.set_args(argc, argv);
cmdline.process_flags();
if (cmdline.help_was_requested()) {
return EXIT_SUCCESS;
}
if (cmdline.arguments().empty()) {
std::cerr << "cppfront: error: no input files (try -help)\n";
return EXIT_FAILURE;
}
// For each Cpp2 source file
int exit_status = EXIT_SUCCESS;
for (auto const& arg : cmdline.arguments())
{
auto& out = flag_cpp1_filename != "stdout" ? std::cout : std::cerr;
out << arg.text << "...";
// Load + lex + parse + sema
cppfront c(arg.text);
// Generate Cpp1 (this may catch additional late errors)
auto count = c.lower_to_cpp1();
// If there were no errors, say so and generate Cpp1
if (c.had_no_errors())
{
if (!c.has_cpp1()) {
out << " ok (all Cpp2, passes safety checks)\n";
}
else if (c.has_cpp2()) {
out << " ok (mixed Cpp1/Cpp2, Cpp2 code passes safety checks)\n";
}
else {
out << " ok (all Cpp1)\n";
}
if (flag_verbose) {
out << " Cpp1: " << count.cpp1_lines << " line" << (count.cpp1_lines != 1 ? "s" : "");
out << "\n Cpp2: " << count.cpp2_lines << " line" << (count.cpp2_lines != 1 ? "s" : "");
auto total = count.cpp1_lines + count.cpp2_lines;
if (total > 0) {
out << " (";
if (count.cpp2_lines / count.cpp1_lines > 25) {
out << std::setprecision(3)
<< 100.0 * count.cpp2_lines / total;
}
else {
out << 100 * count.cpp2_lines / total;
}
out << "%)";
}
}
out << "\n";
}
// Otherwise, print the errors
else
{
std::cerr << "\n";
c.print_errors();
std::cerr << "\n";
exit_status = EXIT_FAILURE;
}
// And, if requested, the debug information
if (flag_debug_output) {
c.debug_print();
}
}
if (flag_internal_debug) {
stackinstr::print_deepest();
stackinstr::print_largest();
}
return exit_status;
}
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