feat: finish generator

src/compiler/generator/gen_identifier.c

@@ -0,0 +1,29 @@
+#include <compiler/internals/gen.h>
+
+// Identifier lookup
+gen_res_t gen_identifier(fzl_gen_t *gen, fzl_node_t *node)
+{
+  if (!gen || !node)
+    return gen_error;
+
+  fzl_sym_t sym;
+  bool exists = false;
+  ssize_t i   = gen->syms_top - 1;
+  for (; i >= 0; i--)
+    if ((exists = fzl_symt_get(gen->syms[i], node->token->value, &sym)))
+      break;
+
+  if (!exists)
+    return gen_error;
+
+  if (!sym.slot_set)
+    return gen_error;
+
+  size_t depth = gen->syms_top - 1 - i;
+  gen_op(gen, FZL_OPCODE_LOAD_LOCAL);
+  gen_word(gen, depth);
+  gen_word(gen, sym.slot);
+
+  return (gen_res_t){
+      .error = false, .type = sym.type, .classname = sym.classname};
+}