File: generated_data_type_example.k

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typedef enum { ..., sel_Neg = 4, sel_Minus = 5, sel_Plus = 6, sel_Zero = 7,
                 sel_Nilexprlist = 8, sel_Consexprlist = 9, ... } kc_enum_operators;

typedef struct kc_tag_expr *expr; /* note that a `expr' is a pointer to a `struct kc_tag_expr'*/
typedef struct kc_tag_exprlist *exprlist;

struct kc_tag_expr {
	kc_enum_operators prod_sel;
	union {
		struct {
			expr expr_1;
		} Neg;
		struct {
			expr expr_1;
			expr expr_2;
		} Minus;
		struct {
			expr expr_1;
			expr expr_2;
		} Plus;
	} u;
	float value;  /* an attribute */
};

struct kc_tag_exprlist {
	kc_enum_operators prod_sel;
	union {
		struct {
			expr expr_1;
			exprlist exprlist_1;
		} Consexprlist;
	} u;
};