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-rw-r--r--askama_shared/src/generator.rs10
-rw-r--r--askama_shared/src/parser.rs9
2 files changed, 11 insertions, 8 deletions
diff --git a/askama_shared/src/generator.rs b/askama_shared/src/generator.rs
index bec3437..8a112c8 100644
--- a/askama_shared/src/generator.rs
+++ b/askama_shared/src/generator.rs
@@ -415,11 +415,13 @@ impl<'a> Generator<'a> {
self.writeln("}");
}
- fn write_match(&mut self, state: &'a State, ws1: &WS, expr: &Expr, inter: &'a str, arms:
- &'a [When], ws2: &WS) {
+ fn write_match(&mut self, state: &'a State, ws1: &WS, expr: &Expr, inter: Option<&'a str>,
+ arms: &'a [When], ws2: &WS) {
self.flush_ws(ws1);
- if !inter.is_empty() {
- self.next_ws = Some(inter);
+ if let Some(inter) = inter {
+ if !inter.is_empty() {
+ self.next_ws = Some(inter);
+ }
}
self.write("match ");
diff --git a/askama_shared/src/parser.rs b/askama_shared/src/parser.rs
index 14d1fe8..402801f 100644
--- a/askama_shared/src/parser.rs
+++ b/askama_shared/src/parser.rs
@@ -58,7 +58,7 @@ pub enum Node<'a> {
LetDecl(WS, Target<'a>),
Let(WS, Target<'a>, Expr<'a>),
Cond(Vec<(WS, Option<Expr<'a>>, Vec<Node<'a>>)>, WS),
- Match(WS, Expr<'a>, &'a str, Vec<When<'a>>, WS),
+ Match(WS, Expr<'a>, Option<&'a str>, Vec<When<'a>>, WS),
Loop(WS, Target<'a>, Expr<'a>, Vec<Node<'a>>, WS),
Extends(Expr<'a>),
BlockDef(WS, &'a str, Vec<Node<'a>>, WS),
@@ -480,7 +480,7 @@ named!(block_match<Node>, do_parse!(
expr: ws!(expr_any) >>
nws1: opt!(tag_s!("-")) >>
tag_s!("%}") >>
- inter: take_content >>
+ inter: opt!(take_content) >>
arms: many1!(when_block) >>
else_arm: opt!(match_else_block) >>
ws!(tag_s!("{%")) >>
@@ -493,13 +493,14 @@ named!(block_match<Node>, do_parse!(
arms.push(arm);
}
let inter = match inter {
- Node::Lit(lws, val, rws) => {
+ Some(Node::Lit(lws, val, rws)) => {
assert!(val.is_empty(),
"only whitespace allowed between match and first when, found {}", val);
assert!(rws.is_empty(),
"only whitespace allowed between match and first when, found {}", rws);
- lws
+ Some(lws)
},
+ None => None,
_ => panic!("only literals allowed between match and first when"),
};
Node::Match(