|
|
- #include "molasses/lexer.h"
- #include "molasses/parser_primitives.h"
- #include <cstring>
- #include <filesystem>
- #include <fstream>
- #include <iostream>
- #include <stack>
- #include <string>
- #include <variant>
-
- using compile_element = std::variant<molasses::lexed_output, molasses::generate_context, std::string>;
-
- int main(int argc, char** argv) {
- std::vector<std::string> arguments;
- while(argc > 1) {
- argv++;
- arguments.emplace_back(*argv, strlen(*argv));
- argc--;
- }
-
- try {
-
- std::stack<compile_element> compile_stack;
-
- for(auto elem : arguments) {
- if(elem == "generate") {
- if(std::holds_alternative<std::string>(compile_stack.top())) {
- auto filename = std::get<std::string>(compile_stack.top());
- compile_stack.pop();
- if(std::holds_alternative<molasses::generate_context>(compile_stack.top())) {
- auto generator = std::get<molasses::generate_context>(compile_stack.top());
- compile_stack.pop();
- auto assembler = molasses::generate(generator);
- std::ofstream output(filename + ".s");
- for(const auto& line : assembler) {
- output << line;
- }
- compile_stack.emplace(filename);
- } else
- throw std::runtime_error("generate expects a parsed output");
- } else
- throw std::runtime_error("generate expects a filename");
- } else if(elem == "parse") {
- molasses::parser_context ctx;
- ctx = molasses::register_integers(ctx);
- ctx = molasses::register_i32_operations(ctx);
-
- if(std::holds_alternative<molasses::lexed_output>(compile_stack.top())) {
- auto lexer = std::get<molasses::lexed_output>(compile_stack.top());
- compile_stack.pop();
- auto generator = molasses::parse(ctx, lexer);
- compile_stack.emplace(generator);
- } else
- throw std::runtime_error("parse expects a lexed output");
- } else if(elem == "lex") {
- if(std::holds_alternative<std::string>(compile_stack.top())) {
- auto filename = std::get<std::string>(compile_stack.top());
- compile_stack.pop();
- if(not std::filesystem::exists(filename))
- throw std::runtime_error("file " + filename + " does not exist");
- std::ifstream t(filename);
- std::stringstream buffer;
- buffer << t.rdbuf();
- auto lexed = molasses::lex(filename, buffer.str());
- compile_stack.emplace(lexed);
- } else
- throw std::runtime_error("lex expects a filename");
- } else if(elem == "lex-all") {
- std::vector<molasses::lexed_output> lexed_list;
- while(not compile_stack.empty() and std::holds_alternative<std::string>(compile_stack.top())) {
- auto filename = std::get<std::string>(compile_stack.top());
- compile_stack.pop();
- if(not std::filesystem::exists(filename))
- throw std::runtime_error("file " + filename + " does not exist");
- std::ifstream t(filename);
- std::stringstream buffer;
- buffer << t.rdbuf();
- auto lexed = molasses::lex(filename, buffer.str());
- lexed_list.emplace_back(lexed);
- }
- for(auto& lexed : lexed_list) {
- compile_stack.emplace(std::move(lexed));
- }
- } else if(elem == "merge") {
- if(std::holds_alternative<molasses::lexed_output>(compile_stack.top())) {
- auto lexer_1 = std::get<molasses::lexed_output>(compile_stack.top());
- compile_stack.pop();
- if(std::holds_alternative<molasses::lexed_output>(compile_stack.top())) {
- auto lexer_2 = std::get<molasses::lexed_output>(compile_stack.top());
- compile_stack.pop();
- compile_stack.emplace(molasses::concatenate(lexer_1, lexer_2));
- } else
- throw std::runtime_error("merge expects 2 lexed outputs");
- } else
- throw std::runtime_error("merge expects 2 lexed outputs");
- } else if(elem == "merge-all") {
- if(std::holds_alternative<molasses::lexed_output>(compile_stack.top())) {
- auto lexer_1 = std::get<molasses::lexed_output>(compile_stack.top());
- compile_stack.pop();
- while(not compile_stack.empty() and std::holds_alternative<molasses::lexed_output>(compile_stack.top())) {
- auto lexer_2 = std::get<molasses::lexed_output>(compile_stack.top());
- compile_stack.pop();
- lexer_1 = molasses::concatenate(lexer_1, lexer_2);
- }
- compile_stack.emplace(lexer_1);
- } else
- throw std::runtime_error("merge-all expects at least 1 lexed outputs");
- } else if(elem == "assemble") {
- if(std::holds_alternative<std::string>(compile_stack.top())) {
- auto filename = std::get<std::string>(compile_stack.top());
- compile_stack.pop();
- std::stringstream compile;
- compile << "clang -c " << filename << ".s -o " << filename << ".o";
- std::stringstream link;
- link << "ld -e _start " << filename << ".o -o " << filename;
- std::cout << compile.str() << std::endl;
- system(compile.str().c_str());
- std::cout << link.str() << std::endl;
- system(link.str().c_str());
- } else
- throw std::runtime_error("assemble expects an assembly file");
- } else if(elem == "help" or elem == "--help") {
- std::cout << "# Sugar\n\n";
- std::cout << "## Commands\n\n";
- std::cout << "lex : string ➔ lexed_output\n";
- std::cout << "> takes a filename to a file that must be compiled\n\n";
- std::cout << "lex-all : string* ➔ lexed_output*\n";
- std::cout << "> takes as many filenames to files that must be compiled as can be read and passes them through the lexed\n\n";
- std::cout << "merge : lexed_output lexed_output ➔ lexed_output\n";
- std::cout << "> merges two lexed modules together\n\n";
- std::cout << "merge-all : lexed_output* ➔ lexed_output\n";
- std::cout << "> merges as many lexed modules together as present on the top of the stack\n\n";
- std::cout << "parse : lexed_output ➔ parsed_output\n";
- std::cout << "> prepares code for generation\n\n";
- std::cout << "generate : parsed_output string ➔ string\n";
- std::cout << "> takes a root filename, it will be appended with \".s\" and that will be the generated assembly file,\n";
- std::cout << "> the filename will not be consumed\n\n";
- std::cout << "assemble : string ➔ _ \n";
- std::cout
- << "> takes a root filename, it will be appended with \".s\" and that file will be compiled,\n";
- std::cout << "> the compiled output will be the given filename\n\n";
- std::cout << "help : _ ➔ _ \n";
- std::cout << "> prints this help\n\n";
- std::cout << "## Examples\n\n";
- std::cout << "- compile the file \"example.mol\" into the \"potato.s\" assembly file\n";
- std::cout << "> `$ sugar example.mol lex parse potato generate`\n";
- std::cout << "\n";
- std::cout << "- compile the file \"example.mol\" into the \"potato\" executable\n";
- std::cout << "> `$ sugar example.mol lex parse potato generate assemble`\n";
- std::cout << "\n";
- std::cout << "- compile the file \"example.mol\" and \"2.mol\" into the \"potato\" executable\n";
- std::cout << "> `$ sugar example.mol lex 2.mol lex merge parse potato generate assemble`\n";
- } else
- compile_stack.emplace(elem);
- }
-
- if(compile_stack.size() > 1) throw std::runtime_error("build left unfinished operations");
- if(not compile_stack.empty()) {
- if(std::holds_alternative<molasses::lexed_output>(compile_stack.top())) {
- auto lexer = std::get<molasses::lexed_output>(compile_stack.top());
- for(auto elem : lexer.symbols) {
- std::cout << elem << " ";
- }
- std::cout << "\n\n";
- for(auto [id, name] : lexer.dictionary) {
- std::cout << id << ": " << name << "\n";
- }
- } else if(std::holds_alternative<molasses::generate_context>(compile_stack.top())) {
- auto generator = std::get<molasses::generate_context>(compile_stack.top());
- for(const auto& elem : generator.procedures) {
- std::cout << elem->_name << " : ";
- for(const auto& args : elem->_args) {
- std::cout << args << " ";
- }
- std::cout << "->";
- for(const auto& rets : elem->_rets) {
- std::cout << " " << rets;
- }
- std::cout << "\n";
- }
- }
- }
- } catch (molasses::parser_error& error) {
- std::cerr << error.what();
- }
- }
|