void parse_options() {
// Parse command line options, and update the environment to match the
// specified options.
argp->usage(
"Usage: jogo [OPTIONS] FILE...\n\n"
"Compiles Jogo source files into a library or executable.\n\n"
" -a, --assembly Compile, but do not assemble or link.\n"
" -c, --compile Compile and assemble, but do not link.\n"
" -e, --execute Execute program as a script.\n"
" -d, --debug Emit debug information.\n"
" -l, --library LIB Compile and link with native library LIB.\n"
" -i, --include DIR Add the directory DIR to the search path.\n"
" -o, --output FILE Write compiler output to FILE.\n"
" -m, --make Compile input files and out-of-date dependencies.\n"
" -h, --help Print this help message.\n"
" -v, --verbose Print extra information during compilation.\n"
" -g, --generator GEN Use code generator GEN.\n"
" --build-dir DIR Output directory for object files.\n"
" --dump-ir Output the intermediate representation.\n"
" --dump-ast Output the abstract syntax tree.\n"
" --dump-liveness Output liveness info when printing the IR.\n"
" --dump-regalloc Dump register allocations.\n"
" --dump-reggraph Dump register interference graphs.\n"
" --version Print the compiler version number.\n");
for (ArgToken tok = argp->next(); tok; tok = argp->next()) {
// Convert abbreviated flags into the longer descriptive form (e.g.,
// convert -p to --path)
if (ArgToken::SHORT == tok.type()) {
parse_short_option(tok.value());
} else if (ArgToken::LONG == tok.type()) {
parse_option(tok.value());
} else {
env->input(tok.value());
}
}
std::string gen = env->generator();
if (gen != "Intel64" && gen != "C" && gen != "Nasm64") {
argp->error("Invalid code generator (options: Intel64, NAsm64, C)");
}
if (!env->inputs()) {
argp->error("No input files.");
}
}
