From 9f77f09aacd1fb0fd6138a6d16ed2755f6bfae3f Mon Sep 17 00:00:00 2001
From: Martin Haug <mhaug@live.de>
Date: Sat, 29 May 2021 12:25:10 +0200
Subject: Parse import and include expressions

Co-Authored-By: Laurenz <laurmaedje@gmail.com>
---
 src/syntax/expr.rs | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'src/syntax/expr.rs')

diff --git a/src/syntax/expr.rs b/src/syntax/expr.rs
index 97361fc3..fd106eb8 100644
--- a/src/syntax/expr.rs
+++ b/src/syntax/expr.rs
@@ -56,6 +56,10 @@ pub enum Expr {
     While(WhileExpr),
     /// A for loop expression: `for x in y { z }`.
     For(ForExpr),
+    /// An import expression: `import "utils.typ" using a, b, c`.
+    Import(ImportExpr),
+    /// An include expression: `include "chapter1.typ"`.
+    Include(IncludeExpr),
 }
 
 impl Expr {
@@ -85,6 +89,8 @@ impl Expr {
             Self::If(ref v) => v.span,
             Self::While(ref v) => v.span,
             Self::For(ref v) => v.span,
+            Self::Import(ref v) => v.span,
+            Self::Include(ref v) => v.span,
         }
     }
 
@@ -432,6 +438,35 @@ pub struct LetExpr {
     pub init: Option<Box<Expr>>,
 }
 
+/// An import expression: `import "utils.typ" using a, b, c`.
+#[derive(Debug, Clone, PartialEq)]
+pub struct ImportExpr {
+    /// The source code location.
+    pub span: Span,
+    /// The items to be imported.
+    pub imports: Imports,
+    /// The location of the importable file.
+    pub path: Box<Expr>,
+}
+
+/// The items that ought to be imported from a file.
+#[derive(Debug, Clone, PartialEq)]
+pub enum Imports {
+    /// All items in the scope of the file should be imported.
+    Wildcard,
+    /// The specified identifiers from the file should be imported.
+    Idents(Vec<Ident>),
+}
+
+/// An include expression: `include "chapter1.typ"`.
+#[derive(Debug, Clone, PartialEq)]
+pub struct IncludeExpr {
+    /// The source code location.
+    pub span: Span,
+    /// The location of the file to be included.
+    pub path: Box<Expr>,
+}
+
 /// An if-else expression: `if x { y } else { z }`.
 #[derive(Debug, Clone, PartialEq)]
 pub struct IfExpr {
-- 
cgit v1.2.3