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-rw-r--r--askama_shared/src/input.rs24
1 files changed, 22 insertions, 2 deletions
diff --git a/askama_shared/src/input.rs b/askama_shared/src/input.rs
index 5fc064b..f0baed8 100644
--- a/askama_shared/src/input.rs
+++ b/askama_shared/src/input.rs
@@ -17,7 +17,13 @@ impl<'a> TemplateInput<'a> {
pub fn new(ast: &'a syn::DeriveInput) -> TemplateInput<'a> {
let meta = TemplateMeta::new(ast);
let (path, source) = match meta.source {
- Source::Source(s) => (PathBuf::new(), Cow::Borrowed(s)),
+ Source::Source(s) => {
+ let path = match meta.ext {
+ Some(v) => PathBuf::from(format!("_.{}", v)),
+ None => PathBuf::new(),
+ };
+ (path, Cow::Borrowed(s))
+ },
Source::Path(s) => {
let path = path::find_template_from_path(&s, None);
let src = path::get_template_source(&path);
@@ -33,6 +39,7 @@ pub struct TemplateMeta<'a> {
source: Source<'a>,
pub print: Print,
pub escaping: EscapeMode,
+ pub ext: Option<&'a str>,
}
impl<'a> TemplateMeta<'a> {
@@ -48,6 +55,7 @@ impl<'a> TemplateMeta<'a> {
let mut source = None;
let mut print = Print::None;
let mut escaping = EscapeMode::Html;
+ let mut ext = None;
if let syn::MetaItem::List(_, ref inner) = attr.value {
for nm_item in inner {
if let syn::NestedMetaItem::MetaItem(ref item) = *nm_item {
@@ -79,6 +87,11 @@ impl<'a> TemplateMeta<'a> {
} else {
panic!("escape value must be string literal");
},
+ "ext" => if let syn::Lit::Str(ref s, _) = *val {
+ ext = Some((s.as_ref() as &str).into());
+ } else {
+ panic!("ext value must be string literal");
+ },
_ => { panic!("unsupported annotation key found") }
}
}
@@ -87,7 +100,14 @@ impl<'a> TemplateMeta<'a> {
}
match source {
- Some(s) => TemplateMeta { source: s, print, escaping },
+ Some(s) => {
+ if let Source::Path(_) = s {
+ if ext.is_some() {
+ panic!("'ext' attribute cannot be used with 'path' attribute");
+ }
+ }
+ TemplateMeta { source: s, print, escaping, ext }
+ },
None => panic!("template path or source not found in struct attributes"),
}
}