preserve active comptime state in local type declarations

TODO.md

@@ -943,10 +943,9 @@
     identically during comptime evaluation; zeroing is `memset!(destination, 0)`
   - `std/mem` aligned reallocation uses `memcopy!`
 
-46. fix `EnumFieldStruct` in `std/meta`
-  - currently, the `|info|` `.enum` payload capture doesn't preserve the comptime-ness in the match statement
-    this results in having to type other values in the scope like `[field!(typeinfo!(E), "enum").fields.len]mut []u8`
-    which is obviously absurd
+46. fix `EnumFieldStruct` in `std/meta` (implemented)
+  - comptime local declarations resolve type syntax in the active interpreter state, preserving match captures
+  - `EnumFieldStruct` sizes its working arrays directly from the comptime `.enum |info|` capture
 
 ## A word on unchecked casts
 

compiler/checker/comptime.odin

@@ -3873,7 +3873,7 @@ ct_exec_statements :: proc(
 				ok = value_ok
 				if ok && value_flow.kind == .Yield {
 					value := value_flow.value
-					declared := type_from_syntax(checker, statement.type, state.pkg, state.file)
+					declared := type_from_syntax(checker, statement.type, state.pkg, state.file, active_state=state)
 					if types.is_valid(declared) && !types.is_void(declared) {
 						value, ok = ct_coerce_value(state, value, declared, statement.span)
 					}
@@ -3884,7 +3884,7 @@ ct_exec_statements :: proc(
 					ok = ct_fail(state, .Not_Comptime, statement.span, "comptime value block must yield")
 				}
 			} else {
-				declared := type_from_syntax(checker, statement.type, state.pkg, state.file)
+				declared := type_from_syntax(checker, statement.type, state.pkg, state.file, active_state=state)
 				expected := declared if types.is_valid(declared) && !types.is_void(declared) else types.INVALID
 				value, expr_flow, expr_ok := ct_eval_expr(state, statement.expr, expected, depth+1)
 				ok = expr_ok

std/meta/meta.bro

@@ -43,9 +43,9 @@ TypeInfo :: union(enum) {
 EnumFieldStruct func($E, $Field type, $default ?Field) type {
 	match typeinfo!(E) {
 		.enum |info|: {
-			names [field!(typeinfo!(E), "enum").fields.len]mut []u8 = undefined
-			field_types [field!(typeinfo!(E), "enum").fields.len]mut type = undefined
-			defaults [field!(typeinfo!(E), "enum").fields.len]mut ?Field = undefined
+			names [info.fields.len]mut []u8 = undefined
+			field_types [info.fields.len]mut type = undefined
+			defaults [info.fields.len]mut ?Field = undefined
 			expand for info.fields |field, index| {
 				names[index] = field.name
 				field_types[index] = Field