[flang] Avoid most uses of Boolean-valued Pre() callbacks in unparse.cc.

Original-commit: flang-compiler/f18@f4ea2f94f3 Reviewed-on: https://github.com/flang-compiler/f18/pull/43
2018-04-06 13:13:20 -07:00
parent af966cccc2
commit 8ea4a0a060
2 changed files with 329 additions and 681 deletions
--- a/flang/lib/parser/parse-tree-visitor.h
+++ b/flang/lib/parser/parse-tree-visitor.h
@@ -9,7 +9,7 @@
 #include <variant>

 /// Parse tree visitor
-/// Call Walk(x, visitor) to visit each node under x.
+/// Call Walk(x, visitor) to visit x and, by default, each node under x.
 ///
 /// visitor.Pre(x) is called before visiting x and its children are not
 /// visited if it returns false.
--- a/flang/lib/parser/unparse.cc
+++ b/flang/lib/parser/unparse.cc