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-rw-r--r--askama_derive/src/parser.rs17
1 files changed, 16 insertions, 1 deletions
diff --git a/askama_derive/src/parser.rs b/askama_derive/src/parser.rs
index 96e0f09..c8bbb96 100644
--- a/askama_derive/src/parser.rs
+++ b/askama_derive/src/parser.rs
@@ -12,6 +12,7 @@ pub enum Expr<'a> {
Path(Vec<&'a str>),
Array(Vec<Expr<'a>>),
Attr(Box<Expr<'a>>, &'a str),
+ Index(Box<Expr<'a>>, Box<Expr<'a>>),
Filter(&'a str, Vec<Expr<'a>>),
Unary(&'a str, Box<Expr<'a>>),
BinOp(&'a str, Box<Expr<'a>>, Box<Expr<'a>>),
@@ -347,6 +348,20 @@ named!(expr_attr<Input, Expr>, do_parse!(
})
));
+named!(expr_index<Input, Expr>, do_parse!(
+ obj: expr_attr >>
+ key: opt!(do_parse!(
+ ws!(tag_s!("[")) >>
+ key: expr_any >>
+ ws!(tag_s!("]")) >>
+ (key)
+ )) >>
+ (match key {
+ Some(key) => Expr::Index(Box::new(obj), Box::new(key)),
+ None => obj,
+ })
+));
+
named!(filter<Input, (&str, Option<Vec<Expr>>)>, do_parse!(
tag_s!("|") >>
fname: identifier >>
@@ -355,7 +370,7 @@ named!(filter<Input, (&str, Option<Vec<Expr>>)>, do_parse!(
));
named!(expr_filtered<Input, Expr>, do_parse!(
- obj: expr_attr >>
+ obj: expr_index >>
filters: many0!(filter) >>
({
let mut res = obj;