add ?? prefix operator

1 files changed, 14 insertions, 0 deletions

diff --git a/src/analyze.cpp b/src/analyze.cpp
index e71c762669..6e3abdac35 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -4207,6 +4207,20 @@ static TypeTableEntry *analyze_prefix_op_expr(CodeGen *g, ImportTableEntry *impo
                     return g->builtin_types.entry_invalid;
                 }
             }
+        case PrefixOpUnwrapMaybe:
+            {
+                TypeTableEntry *type_entry = analyze_expression(g, import, context, nullptr, expr_node);
+
+                if (type_entry->id == TypeTableEntryIdInvalid) {
+                    return type_entry;
+                } else if (type_entry->id == TypeTableEntryIdMaybe) {
+                    return type_entry->data.maybe.child_type;
+                } else {
+                    add_node_error(g, expr_node,
+                        buf_sprintf("expected maybe type, got '%s'", buf_ptr(&type_entry->name)));
+                    return g->builtin_types.entry_invalid;
+                }
+            }
     }
     zig_unreachable();
 }