Added file as function commandline switch

This commit is contained in:
Robert Bendun 2022-10-20 16:42:05 +02:00
parent 346c66a8f4
commit 6c631dc075
2 changed files with 84 additions and 7 deletions

View File

@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
* `:quit` REPL command that mirrors `:exit` command
* Virtual MIDI output port creation as default action (--output connects to existing one)
* Added build instructions
* `-f` commandline argument that will turn file into deffered function
### Changed

View File

@ -16,6 +16,7 @@
#include <musique/pretty.hh>
#include <musique/try.hh>
#include <musique/unicode.hh>
#include <musique/value/block.hh>
#ifdef _WIN32
extern "C" {
@ -76,6 +77,9 @@ static T pop(std::span<char const*> &span)
" -I,--interactive,--repl\n"
" enables interactive mode even when another code was passed\n"
"\n"
" -f,--as-function FILENAME\n"
" deffer file execution and turn it into a file\n"
"\n"
" --ast\n"
" prints ast for given code\n"
"\n"
@ -119,6 +123,37 @@ static void trim(std::string_view &s)
}
}
static std::string filename_to_function_name(std::string_view filename)
{
if (filename == "-") {
return "stdin";
}
auto stem = fs::path(filename).stem().string();
auto stem_view = std::string_view(stem);
std::string name;
auto is_first = unicode::First_Character::Yes;
while (!stem_view.empty()) {
auto [rune, next_stem] = utf8::decode(stem_view);
if (!unicode::is_identifier(rune, is_first)) {
if (rune != ' ' && rune != '-') {
// TODO Nicer error
std::cerr << "[ERROR] Failed to construct function name from filename " << stem
<< "\n due to presence of invalid character: " << utf8::Print{rune} << "(U+" << std::hex << rune << ")\n"
<< std::flush;
std::exit(1);
}
name += '_';
} else {
name += stem_view.substr(0, stem_view.size() - next_stem.size());
}
stem_view = next_stem;
}
return name;
}
/// Runs interpreter on given source code
struct Runner
{
@ -160,6 +195,29 @@ struct Runner
Runner& operator=(Runner const&) = delete;
Runner& operator=(Runner &&) = delete;
/// Consider given input file as new definition of parametless function
///
/// Useful for deffering execution of files to the point when all configuration of midi devices
/// is beeing known as working.
std::optional<Error> deffered_file(std::string_view source, std::string_view filename)
{
auto ast = Try(Parser::parse(source, filename, repl_line_number));
if (ast_only_mode) {
dump(ast);
return {};
}
auto name = filename_to_function_name(filename);
Block block;
block.location = ast.location;
block.body = std::move(ast);
block.context = Env::global;
std::cout << "Defined function " << name << " as file " << filename << std::endl;
Env::global->force_define(std::move(name), Value(std::move(block)));
return {};
}
/// Run given source
std::optional<Error> run(std::string_view source, std::string_view filename, bool output = false)
{
@ -286,7 +344,12 @@ static std::optional<Error> Main(std::span<char const*> args)
/// Describes all arguments that will be run
struct Run
{
bool is_file = true;
enum Type
{
File,
Argument,
Deffered_File
} type;
std::string_view argument;
};
@ -299,7 +362,7 @@ static std::optional<Error> Main(std::span<char const*> args)
std::string_view arg = pop(args);
if (arg == "-" || !arg.starts_with('-')) {
runnables.push_back({ .is_file = true, .argument = std::move(arg) });
runnables.push_back({ .type = Run::File, .argument = std::move(arg) });
continue;
}
@ -313,7 +376,16 @@ static std::optional<Error> Main(std::span<char const*> args)
std::cerr << "musique: error: option " << arg << " requires an argument" << std::endl;
std::exit(1);
}
runnables.push_back({ .is_file = false, .argument = pop(args) });
runnables.push_back({ .type = Run::Argument, .argument = pop(args) });
continue;
}
if (arg == "-f" || arg == "--as-function") {
if (args.empty()) {
std::cerr << "musique: error: option " << arg << " requires an argument" << std::endl;
std::exit(1);
}
runnables.push_back({ .type = Run::Deffered_File, .argument = pop(args) });
continue;
}
@ -346,8 +418,8 @@ static std::optional<Error> Main(std::span<char const*> args)
Runner runner{output_port};
for (auto const& [is_file, argument] : runnables) {
if (!is_file) {
for (auto const& [type, argument] : runnables) {
if (type == Run::Argument) {
Lines::the.add_line("<arguments>", argument, repl_line_number);
Try(runner.run(argument, "<arguments>"));
repl_line_number++;
@ -355,7 +427,6 @@ static std::optional<Error> Main(std::span<char const*> args)
}
auto path = argument;
if (path == "-") {
path = "<stdin>";
eternal_sources.emplace_back(std::istreambuf_iterator<char>(std::cin), std::istreambuf_iterator<char>());
} else {
if (not fs::exists(path)) {
@ -367,7 +438,11 @@ static std::optional<Error> Main(std::span<char const*> args)
}
Lines::the.add_file(std::string(path), eternal_sources.back());
if (type == Run::File) {
Try(runner.run(eternal_sources.back(), path));
} else {
Try(runner.deffered_file(eternal_sources.back(), argument));
}
}
if (runnables.empty() || enable_repl) {
@ -442,4 +517,5 @@ int main(int argc, char const** argv)
std::cerr << result.value() << std::flush;
return 1;
}
return 0;
}