start working on runtime

src/runtime/runtime.c

@@ -0,0 +1,23 @@
+#include "runtime.h"
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+uint64_t pop_bytecode(Translated *translated, RuntimeState *state) {
+  uint64_t *instruction = darray_get(&translated->bytecode, state->head++);
+  return *instruction;
+}
+
+void run_instruction(Translated *translated, RuntimeState *state) {
+  uint64_t opcode = pop_bytecode(translated, state);
+  switch (opcode) { case OP_LOAD_NULL: }
+}
+
+void runtime(Translated translated) {
+  RuntimeState state = {
+      checked_malloc(translated.registerCount * sizeof(size_t)), 0};
+    
+  while (state.head < translated.bytecode.size)
+    run_instruction(&translated, &state);
+  free(state.registers);
+}