New context system (#3497)

1 files changed, 9 insertions, 0 deletions

diff --git a/crates/typst-syntax/src/parser.rs b/crates/typst-syntax/src/parser.rs
index 32e15cb7..567bcbd1 100644
--- a/crates/typst-syntax/src/parser.rs
+++ b/crates/typst-syntax/src/parser.rs
@@ -750,6 +750,7 @@ fn code_primary(p: &mut Parser, atomic: bool) {
         SyntaxKind::Let => let_binding(p),
         SyntaxKind::Set => set_rule(p),
         SyntaxKind::Show => show_rule(p),
+        SyntaxKind::Context => contextual(p, atomic),
         SyntaxKind::If => conditional(p),
         SyntaxKind::While => while_loop(p),
         SyntaxKind::For => for_loop(p),
@@ -889,6 +890,14 @@ fn show_rule(p: &mut Parser) {
     p.wrap(m, SyntaxKind::ShowRule);
 }
 
+/// Parses a contextual expression: `context text.lang`.
+fn contextual(p: &mut Parser, atomic: bool) {
+    let m = p.marker();
+    p.assert(SyntaxKind::Context);
+    code_expr_prec(p, atomic, 0);
+    p.wrap(m, SyntaxKind::Contextual);
+}
+
 /// Parses an if-else conditional: `if x { y } else { z }`.
 fn conditional(p: &mut Parser) {
     let m = p.marker();