rewrite compiler, add for/rof support

bench/bench_window.cpp

@@ -223,22 +223,19 @@ void bench_window::on_add_warrior_dialog_response(int response_id, Gtk::FileChoo
     gsize length;
     file->load_contents(contents, length);
 
-    auto w = lib94::compile_warrior(std::string(contents, length));
-
-    delete contents;
-
-    if (std::holds_alternative<lib94::warrior *>(w)) {
-      warriors.push_back(std::get<lib94::warrior *>(w));
+    try {
+      warriors.push_back(lib94::compile_warrior(std::string(contents, length)));
       on_click_new_round();
     }
-
-    else {
-      Gtk::MessageDialog *md = new Gtk::MessageDialog(std::string("Failed to compile: ") + std::get<std::string>(w));
+    catch (const lib94::compiler_exception &ex) {
+      Gtk::MessageDialog *md = new Gtk::MessageDialog(std::string("failed to compile: ") + ex.message + " on line " + std::to_string(ex.line_number));
       md->set_transient_for(*this);
       md->set_modal();
       md->signal_response().connect([md](int) {delete md;});
       md->show();
     }
+
+    delete contents;
   }
 
   delete dialog;

include/lib94/lib94.hpp

@@ -59,7 +59,12 @@ namespace lib94 {
 
   std::string instruction_to_string(const instruction &instr);
 
-  std::variant<warrior *, std::string> compile_warrior(std::string source);
+  struct compiler_exception : public std::exception {
+    unsigned line_number;
+    std::string message;
+  };
+
+  warrior *compile_warrior(std::string source);
   bool save_warrior(const warrior &w, const std::filesystem::path &to);
   std::optional<warrior *> load_warrior(const std::filesystem::path &from);
 

makefile

@@ -1,4 +1,4 @@
-CPP_ARGS = -std=c++20 -O2 -Wall -Wextra -Iinclude
+CPP_ARGS = -std=c++20 -O2 -Wall -Wextra -Iinclude -ggdb
 
 GTKMM_CPP_ARGS = $(shell pkg-config --cflags gtkmm-4.0)
 GTKMM_LD_ARGS = $(shell pkg-config --libs gtkmm-4.0)

score/main.cpp

@@ -43,22 +43,25 @@ int main(int argc, const char **argv) {
   file1.close();
   file2.close();
 
-  auto w1 = lib94::compile_warrior(source1);
-  auto w2 = lib94::compile_warrior(source2);
+  lib94::warrior *w1, *w2;
 
-  if (std::holds_alternative<std::string>(w1)) {
-    std::cout << "error compiling " << argv[1] << ": " << std::get<std::string>(w1) << '\n';
+  try {
+    w1 = lib94::compile_warrior(source1);
+  }
+  catch (const lib94::compiler_exception &ex) {
+    std::cout << "error in " << argv[1] << " on line " << ex.line_number << ": " << ex.message << '\n';
     return 1;
   }
 
-  if (std::holds_alternative<std::string>(w2)) {
-    std::cout << "error compiling " << argv[2] << ": " << std::get<std::string>(w2) << '\n';
+  try {
+    w2 = lib94::compile_warrior(source1);
+  }
+  catch (const lib94::compiler_exception &ex) {
+    std::cout << "error in " << argv[2] << " on line " << ex.line_number << ": " << ex.message << '\n';
     return 1;
   }
 
-  const lib94::warrior *ws[2];
-  ws[0] = std::get<lib94::warrior *>(w1);
-  ws[1] = std::get<lib94::warrior *>(w2);
+  const lib94::warrior *ws[2] = {w1, w2};
 
   print_warrior(ws[0]);
   print_warrior(ws[1]);

tabulator-mpi/main.cpp

@@ -16,14 +16,14 @@ const lib94::warrior *load_warrior(const char *file) {
 
   std::string source(std::istreambuf_iterator<char>(stream), {});
 
-  auto w = lib94::compile_warrior(source);
-
-  if (std::holds_alternative<std::string>(w)) {
-    fprintf(stderr, "error compiling %s: %s\n", file, std::get<std::string>(w).c_str());
-    exit(1);
+  try {
+    return lib94::compile_warrior(source);
   }
 
-  return std::get<lib94::warrior *>(w);
+  catch (const lib94::compiler_exception &ex) {
+    fprintf(stderr, "error in %s on line %u: %s\n", file, ex.line_number, ex.message.c_str());
+    exit(1);
+  }
 }
 
 int main(int argc, char **argv) {

warriors/big-nothing.red

@@ -2,13 +2,7 @@
 ;name Big Nothing
 
 start
-  nop
-  nop
-  nop
-  nop
-  nop
-  nop
-  nop
-  nop
-  nop
+  for 19
+    nop
+  rof
   jmp start

warriors/epson.red

@@ -1,16 +1,20 @@
 ;author Benji Dial
 ;name Epson
 
-period equ 10
+intrascan_period equ 10
+interscan_period equ 2
 
-scan_init equ the_end - (the_end - scan) % period + period
+;interscan period must divide intrascan period
+;intrascan period must divide 8000
+
+scan_init equ the_end - scan - (the_end - scan) % intrascan_period + intrascan_period
 
 scan
-  seq.i -period, scan_init
+  seq.i -intrascan_period, scan_init
   jmp found
 
 found_ret
-  add.ab #period, scan
+  add.ab #intrascan_period, scan
   seq.ab scan, scan
   jmp scan
 
@@ -18,17 +22,17 @@ found_ret
   jmn.a scan, scan
 
 clear
-  mov the_end, - 1
-  sub.ab #2, clear
+  mov the_end, scan - interscan_period
+  sub.ab #interscan_period, clear
 
-  seq.ab #the_end - clear - (the_end - clear) % 2 + 3, clear
+  seq.ab #scan_add - 1 - clear - (scan_add - 1 - scan) % interscan_period + interscan_period, clear
   jmp clear
 
-  mov.ab #-1, clear
+  mov.ab #scan - interscan_period - clear, clear
   jmp clear
 
 scan_add
-  dat 2, period + scan_init + 2
+  dat interscan_period, intrascan_period + scan_init + interscan_period
 
 found
   mov bomb, >scan