llvm/lldb/docs/dil-expr-lang.ebnf

(* Data Inspection Language (DIL) definition - LLDB Debug Expressions *)

(* This is currently a subset of the final DIL Language, matching the current
   DIL implementation. *)

expression = primary_expression ;

primary_expression = id_expression
                   | "(" expression ")";

id_expression = unqualified_id
              | qualified_id
	      | register ;

unqualified_id = identifier ;

qualified_id = ["::"] [nested_name_specifier] unqualified_id
             | ["::"] identifier ;

identifier = ? C99 Identifier ? ;

register = "$" ? Register name ? ;

nested_name_specifier = type_name "::"
                      | namespace_name '::'
                      | nested_name_specifier identifier "::" ;

type_name = class_name
          | enum_name
          | typedef_name;

class_name = identifier ;

enum_name = identifier ;

typedef_name = identifier ;

namespace_name = identifier ;