amxo_auto_resolver.c

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#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
 
#include "amxo_parser_priv.h"
 
static void amxo_resolver_auto_defaults(amxo_parser_t* parser,
                                        UNUSED void* priv) {
    amxc_var_t* config = amxo_parser_claim_config(parser, "auto-resolver-order");
    amxc_var_set_type(config, AMXC_VAR_ID_LIST);
 
    amxc_var_add(cstring_t, config, "ftab");
    amxc_var_add(cstring_t, config, "import");
    amxc_var_add(cstring_t, config, "*");
 
    return;
}
 
static amxo_fn_ptr_t amxo_resolver_auto(amxo_parser_t* parser,
                                        const char* fn_name,
                                        amxo_fn_type_t type,
                                        UNUSED const char* data,
                                        UNUSED void* priv) {
    int retval = -1;
    amxc_var_t* config = amxo_parser_claim_config(parser, "auto-resolver-order");
    const amxc_llist_t* order = amxc_var_constcast(amxc_llist_t, config);
    amxc_htable_t* resolvers = amxo_parser_get_resolvers();
    amxc_var_t used_resolvers;
    const char* name = NULL;
 
    amxc_var_init(&used_resolvers);
    amxc_var_set_type(&used_resolvers, AMXC_VAR_ID_HTABLE);
    amxc_var_add_key(bool, &used_resolvers, "auto", true);
    amxc_llist_for_each(it, order) {
        name = amxc_var_constcast(cstring_t, amxc_var_from_llist_it(it));
        if(name[0] == '*') {
            break;
        }
        retval = amxo_parser_resolve(parser, name, fn_name, type, NULL);
        when_true(retval == 0, exit);
        amxc_var_add_key(bool, &used_resolvers, name, true);
    }
 
    when_true((name != NULL && name[0] != '*'), exit);
 
    amxc_htable_for_each(hit, resolvers) {
        name = amxc_htable_it_get_key(hit);
        if(amxc_var_get_key(&used_resolvers, name, AMXC_VAR_FLAG_DEFAULT)) {
            continue;
        }
        retval = amxo_parser_resolve(parser, name, fn_name, type, NULL);
        when_true(retval == 0, exit);
    }
 
exit:
    amxc_var_clean(&used_resolvers);
    if(retval == 0) {
        return parser->resolved_fn;
    } else {
        return NULL;
    }
}
 
static amxo_resolver_t res_auto = {
    .hit = { .ait = NULL, .key = NULL, .next = NULL },
    .get = amxo_resolver_auto_defaults,
    .resolve = amxo_resolver_auto,
    .clean = NULL,
    .priv = NULL
};
 
CONSTRUCTOR_LVL(110) static void amxo_auto_init(void) {
    amxo_register_resolver("auto", &res_auto);
}
 
DESTRUCTOR_LVL(110) static void amxo_auto_cleanup(void) {
    amxo_unregister_resolver("auto");
}