blaze lisp
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/*
* Copyright (C) 2023 Riyyi
*
* SPDX-License-Identifier: MIT
*/
#include <csignal> // std::signal
#include <cstdlib> // std::exit
#include <string>
#include <string_view>
#include "ruc/argparser.h"
#include "ruc/format/color.h"
#include "ast.h"
#include "environment.h"
#include "error.h"
#include "eval.h"
#include "forward.h"
#include "lexer.h"
#include "printer.h"
#include "reader.h"
#include "readline.h"
#include "settings.h"
static blaze::EnvironmentPtr s_outer_env = blaze::Environment::create();
static auto cleanup(int signal) -> void;
static auto installLambdas(blaze::EnvironmentPtr env) -> void;
static auto rep(std::string_view input, blaze::EnvironmentPtr env) -> std::string;
static auto print(blaze::ValuePtr exp) -> std::string;
auto main(int argc, char* argv[]) -> int
{
bool dump_lexer = false;
bool dump_reader = false;
bool pretty_print = false;
std::string_view history_path = "~/.mal-history";
// CLI arguments
ruc::ArgParser arg_parser;
arg_parser.addOption(dump_lexer, 'l', "dump-lexer", nullptr, nullptr);
arg_parser.addOption(dump_reader, 'r', "dump-reader", nullptr, nullptr);
arg_parser.addOption(pretty_print, 'c', "color", nullptr, nullptr);
arg_parser.addOption(history_path, 'h', "history", nullptr, nullptr, nullptr, ruc::ArgParser::Required::Yes);
arg_parser.parse(argc, argv);
// Set settings
blaze::Settings::the().set("dump-lexer", dump_lexer ? "1" : "0");
blaze::Settings::the().set("dump-reader", dump_reader ? "1" : "0");
blaze::Settings::the().set("pretty-print", pretty_print ? "1" : "0");
// Signal callbacks
std::signal(SIGINT, cleanup);
std::signal(SIGTERM, cleanup);
installFunctions(s_outer_env);
installLambdas(s_outer_env);
blaze::Readline readline(pretty_print, history_path);
std::string input;
while (readline.get(input)) {
if (pretty_print) {
print("\033[0m");
}
print("{}\n", rep(input, s_outer_env));
}
if (pretty_print) {
print("\033[0m");
}
return 0;
}
static auto cleanup(int signal) -> void
{
print("\033[0m\n");
std::exit(signal);
}
static std::string_view lambdaTable[] = {
"(def! not (fn* (cond) (if cond false true)))",
};
static auto installLambdas(blaze::EnvironmentPtr env) -> void
{
for (auto function : lambdaTable) {
rep(function, env);
}
}
static auto rep(std::string_view input, blaze::EnvironmentPtr env) -> std::string
{
blaze::Error::the().clearErrors();
blaze::Error::the().setInput(input);
return print(blaze::eval(blaze::read(input), env));
}
namespace blaze {
auto read(std::string_view input) -> ValuePtr
{
Lexer lexer(input);
lexer.tokenize();
if (Settings::the().get("dump-lexer") == "1") {
lexer.dump();
}
Reader reader(std::move(lexer.tokens()));
reader.read();
if (Settings::the().get("dump-reader") == "1") {
reader.dump();
}
return reader.node();
}
auto eval(ValuePtr ast, EnvironmentPtr env) -> ValuePtr
{
Eval eval(ast, env);
eval.eval();
return eval.ast();
}
} // namespace blaze
static auto print(blaze::ValuePtr exp) -> std::string
{
blaze::Printer printer;
return printer.print(exp, true);
}
// Added to keep the linker happy at step A
namespace blaze {
ValuePtr readline(const std::string&) { return nullptr; }
} // namespace blaze