Revert "Deprecate `defer`"

This reverts commit 7e3e245f6809946ea06ef1998bcabb7e0902fbd7.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/environment.h b/src/environment.h
index ecb6fb4c..c726508d 100644
--- a/src/environment.h
+++ b/src/environment.h
@@ -14,10 +14,17 @@ typedef struct {
     Text_t variable_initializers;
 } compilation_unit_t;
 
+typedef struct deferral_s {
+    struct deferral_s *next;
+    struct env_s *defer_env;
+    ast_t *block;
+} deferral_t;
+
 typedef struct loop_ctx_s {
     struct loop_ctx_s *next;
     const char *loop_name;
     ast_list_t *loop_vars;
+    deferral_t *deferred;
     Text_t skip_label, stop_label;
 } loop_ctx_t;
 
@@ -38,6 +45,7 @@ typedef struct env_s {
     compilation_unit_t *code;
     ast_t *fn;
     loop_ctx_t *loop_ctx;
+    deferral_t *deferred;
     Closure_t *comprehension_action;
     bool do_source_mapping : 1;
     type_t *current_type;