refactor: joined string and missing key recovery for better error messages.

kclvm/sema/src/resolver/config.rs

@@ -141,6 +141,9 @@ impl<'ctx> Resolver<'ctx> {
                         }
                     }
                     ast::Expr::StringLit(string_lit) => vec![string_lit.value.clone()],
+                    // There may be a valid configuration key for joined string and missing expressions here,
+                    // and we will restore it to a null value to avoid unfriendly error messages.
+                    ast::Expr::JoinedString(_) | ast::Expr::Missing(_) => vec!["".to_string()],
                     _ => return SwitchConfigContextState::KeepConfigUnchanged as usize,
                 };
                 self.switch_config_expr_context_by_names(&names)
@@ -159,7 +162,7 @@ impl<'ctx> Resolver<'ctx> {
     ///
     /// Returns:
     ///     push stack times
-    pub(crate) fn switch_config_exprr_context_by_name(&mut self, name: &str) -> usize {
+    pub(crate) fn switch_config_expr_context_by_name(&mut self, name: &str) -> usize {
         let ctx_obj = self.find_schema_attr_obj_from_schema_expr_stack(name);
         self.switch_config_expr_context(ctx_obj) as usize
     }
@@ -220,7 +223,7 @@ impl<'ctx> Resolver<'ctx> {
     pub(crate) fn switch_config_expr_context_by_names(&mut self, names: &[String]) -> usize {
         let mut stack_depth = 0;
         for name in names {
-            stack_depth += self.switch_config_exprr_context_by_name(name);
+            stack_depth += self.switch_config_expr_context_by_name(name);
         }
         stack_depth
     }
@@ -287,7 +290,7 @@ impl<'ctx> Resolver<'ctx> {
                 let mut stack_depth = 0;
                 for name in &names {
                     self.check_config_expr_by_key_name(name, key);
-                    stack_depth += self.switch_config_exprr_context_by_name(name);
+                    stack_depth += self.switch_config_expr_context_by_name(name);
                 }
                 let mut val_ty = self.expr(value);
                 for _ in 0..names.len() - 1 {

test/grammar/types/interpolation/interpolation_0/main.k

@@ -0,0 +1,13 @@
+schema App:
+    name: str
+    containers?: {str: Container}
+
+schema Container:
+    image: str
+
+app: App {
+    name = "ngnix"
+    containers = {
+        "${name}" = {image = name}
+    }
+}

test/grammar/types/interpolation/interpolation_0/stdout.golden

@@ -0,0 +1,5 @@
+app:
+  name: ngnix
+  containers:
+    ngnix:
+      image: ngnix

test/grammar/types/interpolation/interpolation_1/main.k

@@ -0,0 +1,23 @@
+schema App:
+    name: str
+    containers?: {str: Container}
+
+schema Container:
+    image: str
+    envs: {str:Env}
+
+schema Env:
+    value?: str
+    valueFrom?: str
+
+app: App {
+    name = "ngnix"
+    containers = {
+        "${name}" = {
+            image = name
+            envs = {
+                "${name}" = {value = "value"}
+            }
+        }
+    }
+}

test/grammar/types/interpolation/interpolation_1/stdout.golden

@@ -0,0 +1,8 @@
+app:
+  name: ngnix
+  containers:
+    ngnix:
+      image: ngnix
+      envs:
+        ngnix:
+          value: value