#include <libregexis024sol/expr_parse_functions/command_recognition.h>
#include <libregexis024sol/utils.h>
#include <libregexis024sol/expr_compiler.h>
#include <libregexis024sol/sol_misc_base.h>

#define aux_ERROR_CHECK do { if (ctx.error) { return; } } while (0)
#define aux_THROW(str) do { report(ctx, "regex: " str); return; } while (0)

namespace regexis024 {
    const char* header_command_dfa_names[] = {"dfa", "determinize", NULL};

    const char* header_command_select_names[] = {"s", "select", "selarr", "selectional", NULL};

    bool is_header_cmd(const Command &cmd) {
        return cmd.tilda || is_header_dfa_cmd(cmd), is_header_dfa_cmd(cmd);
    }

    bool is_header_dfa_cmd(const Command &cmd) {
        return is_string_in_stringset(cmd.name.c_str(), header_command_dfa_names);
    }

    bool is_header_select_cmd(const Command &cmd) {
        return is_string_in_stringset(cmd.name.c_str(), header_command_select_names);
    }

    void int_parse_with_limit_concern(const std::string &str, REGEX_IS024_MeaningContext &ctx, size_t &res, int lim) {
        res = 0;
        for (char ch: str){
            if (!('0' <= ch && ch <= '9'))
                aux_THROW("bad integer argument");
            res = res * 10 + (ch - '0');
            if (res > (size_t)lim)
                aux_THROW("integer is too big");
        }
    }
}