+#include <stdbool.h>
+
+typedef struct scope_t scope_t;
+
+typedef struct expression_base_t expression_base_t;
+typedef struct const_expression_t const_expression_t;
+typedef struct string_literal_expression_t string_literal_expression_t;
+typedef struct funcname_expression_t funcname_expression_t;
+typedef struct wide_string_literal_expression_t wide_string_literal_expression_t;
+typedef struct compound_literal_expression_t compound_literal_expression_t;
+typedef struct reference_expression_t reference_expression_t;
+typedef struct cast_expression_t cast_expression_t;
+typedef struct call_argument_t call_argument_t;
+typedef struct type_argument_t type_argument_t;
+typedef struct call_expression_t call_expression_t;
+typedef struct binary_expression_t binary_expression_t;
+typedef struct unary_expression_t unary_expression_t;
+typedef struct select_expression_t select_expression_t;
+typedef struct array_access_expression_t array_access_expression_t;
+typedef struct typeprop_expression_t typeprop_expression_t;
+typedef struct conditional_expression_t conditional_expression_t;
+typedef struct expression_list_element_t expression_list_element_t;
+typedef struct comma_expression_t comma_expression_t;
+typedef struct statement_expression_t statement_expression_t;
+typedef struct designator_t designator_t;
+typedef struct offsetof_expression_t offsetof_expression_t;
+typedef struct va_start_expression_t va_start_expression_t;
+typedef struct va_arg_expression_t va_arg_expression_t;
+typedef struct builtin_symbol_expression_t builtin_symbol_expression_t;
+typedef struct builtin_constant_expression_t builtin_constant_expression_t;
+typedef struct builtin_prefetch_expression_t builtin_prefetch_expression_t;
+typedef struct classify_type_expression_t classify_type_expression_t;
+typedef struct bitfield_extract_expression_t bitfield_extract_expression_t;
+typedef union expression_t expression_t;
+
+typedef struct initializer_base_t initializer_base_t;
+typedef struct initializer_list_t initializer_list_t;
+typedef struct initializer_value_t initializer_value_t;
+typedef struct initializer_string_t initializer_string_t;
+typedef struct initializer_wide_string_t initializer_wide_string_t;
+typedef struct initializer_designator_t initializer_designator_t;
+typedef union initializer_t initializer_t;