1 files changed, 14 insertions, 0 deletions

diff --git a/crates/ra_syntax/src/ast/make.rs b/crates/ra_syntax/src/ast/make.rs
index 287a40bee..00422ea91 100644
--- a/crates/ra_syntax/src/ast/make.rs
+++ b/crates/ra_syntax/src/ast/make.rs
@@ -128,6 +128,14 @@ pub fn where_clause(preds: impl Iterator<Item = ast::WherePred>) -> ast::WhereCl
     }
 }
 
+pub fn if_expression(condition: &ast::Expr, statement: &str) -> ast::IfExpr {
+    return ast_from_text(&format!(
+        "fn f() {{ if !{} {{\n    {}\n}}\n}}",
+        condition.syntax().text(),
+        statement
+    ));
+}
+
 fn ast_from_text<N: AstNode>(text: &str) -> N {
     let parse = SourceFile::parse(text);
     let res = parse.tree().syntax().descendants().find_map(N::cast).unwrap();
@@ -160,6 +168,12 @@ pub mod tokens {
             .unwrap()
     }
 
+    pub fn whitespace(text: &str) -> SyntaxToken {
+        assert!(text.trim().is_empty());
+        let sf = SourceFile::parse(text).ok().unwrap();
+        sf.syntax().first_child_or_token().unwrap().into_token().unwrap()
+    }
+
     pub fn single_newline() -> SyntaxToken {
         SOURCE_FILE
             .tree()