lang: basic parser

crates/lang/src/parser/ast.rs

@@ -0,0 +1,36 @@
+use std::collections::{BTreeMap, HashMap};
+
+use indexmap::IndexMap;
+
+use super::Spanned;
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct File<'src> {
+    pub decls: IndexMap<Spanned<&'src str>, Spanned<Expr<'src>>>,
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub enum Expr<'src> {
+    Node(
+        Spanned<&'src str>,
+        Option<Spanned<IndexMap<Spanned<&'src str>, Expr<'src>>>>,
+    ),
+    SimplePipe(Box<Expr<'src>>, Box<Expr<'src>>),
+    NamingPipe(
+        Box<Expr<'src>>,
+        (Vec<Spanned<&'src str>>, Vec<Spanned<&'src str>>),
+        Box<Expr<'src>>,
+    ),
+    MappingPipe(Box<Expr<'src>>, Box<Expr<'src>>),
+    NullPipe(Box<Expr<'src>>, Box<Expr<'src>>),
+    MultiPipe(IndexMap<Spanned<&'src str>, Expr<'src>>),
+    LetIn(
+        IndexMap<Spanned<&'src str>, Box<Expr<'src>>>,
+        Box<Expr<'src>>,
+    ),
+    // $
+    Var(Spanned<&'src str>),
+    // @
+    InputVar(Spanned<&'src str>),
+    AttrSet(Spanned<IndexMap<Spanned<&'src str>, Expr<'src>>>),
+}