Add better support for rust-like number literals (#908)

Signed-off-by: max <gmx.sht@gmail.com>

2 files changed, 34 insertions, 0 deletions

diff --git a/testing/templates/num-literals.html b/testing/templates/num-literals.html
new file mode 100644
index 0000000..90b07db
--- /dev/null
+++ b/testing/templates/num-literals.html
@@ -0,0 +1,11 @@
+{% let plain_int = 9__0__ -%}
+{% let neg_int = -9__0__isize -%}
+{% let suffix_int = 9__0__i32 -%}
+{% let bin_int = 0b__1__0__ -%}
+{% let oct_int = 0o__7__0__ -%}
+{% let hex_int = 0x__f__0__ -%}
+{% let plain_float = 1__0__.5__0__ -%}
+{% let suffix_float = 1__0__.5__0__f32 -%}
+{% let exp_float = 1__0__e+__1__0__f32 -%}
+{% let dotexp_float = 1__0__.5__0__e+__1__0__f32 -%}
+[{{ plain_int }}, {{ neg_int }}, {{ suffix_int }}, {{ bin_int }}, {{ oct_int }}, {{ hex_int }}, {{ plain_float }}, {{ suffix_float }}, {{ exp_float }}, {{ dotexp_float }}]
diff --git a/testing/tests/simple.rs b/testing/tests/simple.rs
index 627a8a3..f0f0a26 100644
--- a/testing/tests/simple.rs
+++ b/testing/tests/simple.rs
@@ -461,3 +461,26 @@ fn test_define_string_var() {
     let template = DefineStringVar;
     assert_eq!(template.render().unwrap(), "");
 }
+
+#[derive(askama::Template)]
+#[template(source = "{% let x = 4.5 %}{{ x }}", ext = "html")]
+struct SimpleFloat;
+
+#[test]
+fn test_simple_float() {
+    let template = SimpleFloat;
+    assert_eq!(template.render().unwrap(), "4.5");
+}
+
+#[derive(askama::Template)]
+#[template(path = "num-literals.html")]
+struct NumLiterals;
+
+#[test]
+fn test_num_literals() {
+    let template = NumLiterals;
+    assert_eq!(
+        template.render().unwrap(),
+        "[90, -90, 90, 2, 56, 240, 10.5, 10.5, 100000000000, 105000000000]",
+    );
+}