Added help

prototypes/molasses/basic_file.mol

@@ -1,4 +1,4 @@
 __PROC__ main
 __--__
 __DO__
-__END__
+__END__

prototypes/molasses/other.mol

@@ -0,0 +1,7 @@
+__PROC__ add_mult
+i32 i32 i32
+__--__
+i32
+__DO__
++ *
+__END__

src/main.cpp

@@ -80,6 +80,50 @@ int main(int argc, char** argv) {
                 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 << "lex : string -> lexed_output\n";
+            std::cout << "merge : lexed_output lexed_output -> lexed_output\n";
+            std::cout << "parse : lexed_output -> parsed_output\n";
+            std::cout << "generate : parsed_output string -> string\n";
+            std::cout << "assemble : string -> \n";
+            std::cout << "help : -> \n";
+            std::cout << "\n";
+            std::cout << "examples:\n";
+            std::cout << "\tcompile the file \"example.mol\" into the \"potato.s\" assembly file\n";
+            std::cout << "\t$ sugar example.mol lex parse potato generate\n";
+            std::cout << "\n";
+            std::cout << "\tcompile the file \"example.mol\" into the \"potato\" executable\n";
+            std::cout << "\t$ sugar example.mol lex parse potato generate assemble\n";
+            std::cout << "\n";
+            std::cout << "\tcompile the file \"example.mol\" and \"2.mol\" into the \"potato\" executable\n";
+            std::cout << "\t$ 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";
+            }
+        }
+    }
 }