From d2d64f00fb7f1487c1fa21a456e003a801d7e711 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Wed, 14 Jan 2015 21:32:42 +0000
Subject: py: Add "default" to switches to allow better code flow analysis.

This helps compiler produce smaller code.  Saves 124 bytes on stmhal and
bare-arm.
---
 py/parse.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'py/parse.c')

diff --git a/py/parse.c b/py/parse.c
index 6d2108dcaa..c60bbb17e5 100644
--- a/py/parse.c
+++ b/py/parse.c
@@ -456,11 +456,13 @@ mp_parse_node_t mp_parse(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, mp_p
                             }
                             break;
                         case RULE_ARG_RULE:
+                        rule_or_no_other_choice:
                             push_rule(&parser, rule_src_line, rule, i + 1); // save this or-rule
                             push_rule_from_arg(&parser, rule->arg[i]); // push child of or-rule
                             goto next_rule;
                         default:
                             assert(0);
+                            goto rule_or_no_other_choice; // to help flow control analysis
                     }
                 }
                 if ((rule->arg[i] & RULE_ARG_KIND_MASK) == RULE_ARG_TOK) {
@@ -520,14 +522,16 @@ mp_parse_node_t mp_parse(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, mp_p
                                 }
                             }
                             break;
-                                           }
+                        }
                         case RULE_ARG_RULE:
                         case RULE_ARG_OPT_RULE:
+                        rule_and_no_other_choice:
                             push_rule(&parser, rule_src_line, rule, i + 1); // save this and-rule
                             push_rule_from_arg(&parser, rule->arg[i]); // push child of and-rule
                             goto next_rule;
                         default:
                             assert(0);
+                            goto rule_and_no_other_choice; // to help flow control analysis
                     }
                 }
 
@@ -674,11 +678,13 @@ mp_parse_node_t mp_parse(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, mp_p
                                 }
                                 break;
                             case RULE_ARG_RULE:
+                            rule_list_no_other_choice:
                                 push_rule(&parser, rule_src_line, rule, i + 1); // save this list-rule
                                 push_rule_from_arg(&parser, arg); // push child of list-rule
                                 goto next_rule;
                             default:
                                 assert(0);
+                                goto rule_list_no_other_choice; // to help flow control analysis
                         }
                     }
                 }
-- 
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