simple bytecode compiler

builder.c

@@ -9,12 +9,12 @@ int main(int argc, char **argv){
   nb_append(&cmd, "gcc");
   nb_append(&cmd, "-Wall -Wextra");
   nb_append(&cmd, "-static");
-  nb_append(&cmd, "./src/vm.c");
-  nb_append(&cmd, "-o vm");
+  nb_append(&cmd, "./src/hlc.c");
+  nb_append(&cmd, "-o hlc");
   nb_cmd(&cmd); 
 
 
-  nb_append(&cmd, "./vm");
+  nb_append(&cmd, "./hlc");
   for (int i=1; i<argc; ++i){
     nb_append(&cmd, argv[i]);
   }

examples/main.hl

@@ -1,4 +1,4 @@
 
-print(((1+2923)*3)/5)
+print(((1+29.9)*3)/5)
 
 print("hello world")

src/hlc.c

@@ -0,0 +1,51 @@
+#define FG_IMPLEMENTATION
+#include "flag.h"
+#include "vm.h"
+
+
+VM global_vm = {0};
+
+void emit_bytecode_call(){
+  printf("[debug] emit_bytecode_call() triggered\n");
+  emit_bytecode(&global_vm);
+}
+
+void flag_handling(int argc, char** argv){
+  fg_flags flags = {0};
+  fg_append_ptr(&flags, "emit-bytecode", emit_bytecode_call);
+  fg_run(&flags, argc, argv);
+}
+
+int main(int argc, char **argv) {
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s <source file>\n", argv[0]);
+        return 1;
+    }
+
+    char* read = nb_read_file(argv[1]);
+    //printf("INPUT: %s\n", read);
+
+    Token tk = tokenize_all(read);
+    SymbolTable table = {0};
+    symbol_table_init(&table, 32);
+
+    Token rpn = build_rpn(&tk, &table);
+    //print_token(&rpn);
+
+    size_t prog_size = 0;
+    instruct *prog = rpn_to_bytecode(&rpn, &prog_size);
+
+    VM vm = {
+        .program = prog,
+        .program_size = prog_size,
+        .inst_p = 0,
+        .st_p = 0,
+        .running = true,
+    };
+    global_vm = vm;
+        
+    
+    flag_handling(argc, argv);
+    vm_run(&vm);    
+    return 0;
+}

src/vm.h

@@ -172,33 +172,29 @@ void vm_run(VM *vm) {
     }
 }
 
-int main(int argc, char **argv) {
-    if (argc < 2) {
-        fprintf(stderr, "Usage: %s <source file>\n", argv[0]);
-        return 1;
+char *op_to_str(OPcode o){
+  switch (o){  
+  case OP_ADD: return "OP_ADD"; break;
+  case OP_SUB: return "OP_SUB"; break;
+  case OP_MUL: return "OP_MUL"; break;
+  case OP_DIV: return "OP_DIV"; break;
+  case OP_PRINT: return "OP_ADD"; break;
+  case OP_HALT: return "OP_HALT"; break;
+  default: break;
     }
-
-    char* read = nb_read_file(argv[1]);
-    //printf("INPUT: %s\n", read);
-
-    Token tk = tokenize_all(read);
-    SymbolTable table = {0};
-    symbol_table_init(&table, 32);
-
-    Token rpn = build_rpn(&tk, &table);
-    //print_token(&rpn);
-
-    size_t prog_size = 0;
-    instruct *prog = rpn_to_bytecode(&rpn, &prog_size);
-    VM vm = {
-        .program = prog,
-        .program_size = prog_size,
-        .inst_p = 0,
-        .st_p = 0,
-        .running = true,
-    };
-
-    vm_run(&vm);
-
-    return 0;
+    return NULL;
 }
+
+void emit_bytecode(VM *v){
+    size_t i =0;
+    while (i < v->program_size){
+        if (v->program[i].op == OP_PUSH_INT) printf("OP_PUSH_INT(%f)\n", v->program[i].num);
+        else if (v->program[i].op == OP_PUSH_FLOAT) printf("OP_PUSH_FLOAT(%f)\n", v->program[i].num);        
+        else if (v->program[i].op == OP_PUSH_STRING) printf("OP_PUSH_STRING(\"%s\")\n", v->program[i].strlit);
+        else printf("%s\n", op_to_str(v->program[i].op));
+        i++;
+    }
+    printf("\n");
+}
+
+