added fmt::Display as a supertrait for AstNode and changed generation.

2020-03-06 19:29:30 +02:00
parent 190179489d
commit 787043496a
2 changed files with 7 additions and 1 deletions
--- a/xtask/src/codegen/gen_syntax.rs
+++ b/xtask/src/codegen/gen_syntax.rs
@@ -68,6 +68,12 @@ fn generate_ast(grammar: AstSrc<'_>) -> Result<String> {
                pub(crate) syntax: SyntaxNode,
            }

+            impl std::fmt::Display for #name {
+                fn fmt(..) -> std::fmt::Result {
+                    std::fmt::Display::fmt(self.syntax())
+                }
+            }
+
            impl AstNode for #name {
                fn can_cast(kind: SyntaxKind) -> bool {
                    match kind {