rebel-parse: add support for struct definition shorthand syntax

2 files changed, 16 insertions, 3 deletions

diff --git a/crates/rebel-parse/src/ast/expr.rs b/crates/rebel-parse/src/ast/expr.rs
index 0a47cb2..0a9ae3f 100644
--- a/crates/rebel-parse/src/ast/expr.rs
+++ b/crates/rebel-parse/src/ast/expr.rs
@@ -1,4 +1,4 @@
-use super::{Block, DestrPat, Ident, Path, ValidationError};
+use super::{Block, DestrPat, Ident, Path, PathRoot, ValidationError};
 use crate::token;
 use rustc_hash::FxHashSet;
 
@@ -281,6 +281,19 @@ pub struct StructField<'a> {
 	pub value: Expr<'a>,
 }
 
+impl<'a> StructField<'a> {
+	pub(crate) fn new(field: Ident<'a>, value: Option<Expr<'a>>) -> Self {
+		let value = value.unwrap_or(Expr::Path(Path {
+			root: PathRoot::Relative,
+			components: vec![field],
+		}));
+		StructField {
+			name: field.name,
+			value,
+		}
+	}
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum OpUnary {
 	Not,
diff --git a/crates/rebel-parse/src/grammar/recipe.rs b/crates/rebel-parse/src/grammar/recipe.rs
index 1c417d3..5319498 100644
--- a/crates/rebel-parse/src/grammar/recipe.rs
+++ b/crates/rebel-parse/src/grammar/recipe.rs
@@ -194,8 +194,8 @@ peg::parser! {
 			}
 
 		rule struct_field() -> expr::StructField<'a>
-			= field:field() p(':') value:expr() {
-				expr::StructField { name: field.name, value }
+			= field:field() value:tagged(<p(':')>, <expr()>)? {
+				expr::StructField::new(field, value)
 			}
 
 		rule path() -> ast::Path<'a>