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-rw-r--r--askama_derive/src/generator.rs10
1 files changed, 10 insertions, 0 deletions
diff --git a/askama_derive/src/generator.rs b/askama_derive/src/generator.rs
index b412c9d..713d9b6 100644
--- a/askama_derive/src/generator.rs
+++ b/askama_derive/src/generator.rs
@@ -47,6 +47,7 @@ pub fn generate(ast: &syn::DeriveInput, path: &str, mut nodes: Vec<Node>) -> Str
} else {
gen.impl_template(ast, &content);
}
+ gen.impl_display(ast);
gen.result()
}
@@ -490,6 +491,15 @@ impl<'a> Generator<'a> {
self.writeln("}");
}
+ // Implement `Display` for the given context struct.
+ fn impl_display(&mut self, ast: &syn::DeriveInput) {
+ self.write_header(ast, "::std::fmt::Display");
+ self.writeln("fn fmt(&self, f: &mut ::std::fmt::Formatter) -> Result<(), ::std::fmt::Error> {");
+ self.writeln("self.render_into(f)");
+ self.writeln("}");
+ self.writeln("}");
+ }
+
// Implement `Deref<Parent>` for an inheriting context struct.
fn deref_to_parent(&mut self, ast: &syn::DeriveInput, parent_type: &syn::Ty) {
self.write_header(ast, "::std::ops::Deref");