feat: generate unified AST and editor contracts from ASDL

crates/cli/tests/parse.rs

@@ -105,3 +105,35 @@ fn parse_command_reads_stdin_to_eof_and_reports_its_origin() {
             .contains("<stdin>: invalid UTF-8 at byte 0")
     );
 }
+
+#[test]
+fn parse_command_exports_versioned_json_for_expression_and_interactive_inputs() {
+    for (mode, source) in [("expression", "f(\"日\")"), ("interactive", "let x = 1")] {
+        let source = SourceFile::new(source.as_bytes());
+        let output = Command::new(env!("CARGO_BIN_EXE_cli"))
+            .args(["parse", "--json", "--mode", mode])
+            .arg(&source.0)
+            .output()
+            .unwrap();
+        assert!(
+            output.status.success(),
+            "{}",
+            String::from_utf8_lossy(&output.stderr)
+        );
+        let document =
+            frontend::ast::AstDocument::from_json(std::str::from_utf8(&output.stdout).unwrap())
+                .unwrap();
+        assert_eq!(document.schema, frontend::ast::AST_SCHEMA_ID);
+        match (mode, document.root) {
+            ("expression", frontend::ast::AstRoot::Expression(_))
+            | ("interactive", frontend::ast::AstRoot::Interactive(_)) => {}
+            _ => panic!("incorrect parse mode"),
+        }
+    }
+    let output = Command::new(env!("CARGO_BIN_EXE_cli"))
+        .args(["parse", "--mode", "unknown", "-"])
+        .output()
+        .unwrap();
+    assert!(!output.status.success());
+    assert!(output.stdout.is_empty());
+}