view params, pulled either from cfg trees or view rule params (tag calls); expr chain parsing; correctly use tags in nested single-line eval visualization

src/eval/eval_bundles.c

@@ -273,3 +273,38 @@ e_member_eval_from_eval_member_name(E_Eval eval, String8 member_name)
   }
   return result;
 }
+
+internal E_Value
+e_value_from_string(String8 string)
+{
+  Temp scratch = scratch_begin(0, 0);
+  E_Eval eval = e_eval_from_string(scratch.arena, string);
+  E_Eval value_eval = e_value_eval_from_eval(eval);
+  E_Value result = value_eval.value;
+  scratch_end(scratch);
+  return result;
+}
+
+internal E_Value
+e_value_from_stringf(char *fmt, ...)
+{
+  Temp scratch = scratch_begin(0, 0);
+  va_list args;
+  va_start(args, fmt);
+  String8 string = push_str8fv(scratch.arena, fmt, args);
+  E_Value result = e_value_from_string(string);
+  va_end(args);
+  scratch_end(scratch);
+  return result;
+}
+
+internal E_Value
+e_value_from_expr(E_Expr *expr)
+{
+  Temp scratch = scratch_begin(0, 0);
+  E_Eval eval = e_eval_from_expr(scratch.arena, expr);
+  E_Eval value_eval = e_value_eval_from_eval(eval);
+  E_Value result = value_eval.value;
+  scratch_end(scratch);
+  return result;
+}

src/eval/eval_bundles.h

@@ -30,5 +30,8 @@ internal E_Eval e_dynamically_typed_eval_from_eval(E_Eval eval);
 internal E_Eval e_value_eval_from_eval(E_Eval eval);
 internal E_Eval e_element_eval_from_array_eval_index(E_Eval eval, U64 index);
 internal E_Eval e_member_eval_from_eval_member_name(E_Eval eval, String8 member_name);
+internal E_Value e_value_from_string(String8 string);
+internal E_Value e_value_from_stringf(char *fmt, ...);
+internal E_Value e_value_from_expr(E_Expr *expr);
 
 #endif // EVAL_BUNDLES_H