implement anon struct literal syntax

This implements stage1 parser support for anonymous struct literal
syntax (see #685), as well as semantic analysis support for anonymous
struct literals and anonymous list literals (see #208). The semantic
analysis works when there is a type coercion in the result location;
inferring the struct type based on the values in the literal is not
implemented yet. Also remaining to do is zig fmt support for this new
syntax and documentation updates.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/ast_render.cpp b/src/ast_render.cpp
index c016f629d1..34cbed245a 100644
--- a/src/ast_render.cpp
+++ b/src/ast_render.cpp
@@ -821,7 +821,9 @@ static void render_node_extra(AstRender *ar, AstNode *node, bool grouped) {
                 break;
             }
         case NodeTypeContainerInitExpr:
-            render_node_ungrouped(ar, node->data.container_init_expr.type);
+            if (node->data.container_init_expr.type != nullptr) {
+                render_node_ungrouped(ar, node->data.container_init_expr.type);
+            }
             if (node->data.container_init_expr.kind == ContainerInitKindStruct) {
                 fprintf(ar->f, "{\n");
                 ar->indent += ar->indent_size;