// Process traits.

    /*
        request
            : <NULL>
            | seed '/' full_trait '/' params
            | full_trait '/' params
            ;

        seed
            : '[' random_seed ']'   // seed for random number generator before query
            ;

        full_trait
            : <NULL>
            | trait
            | trait ',' armor_trait
            | trait ',' armor_trait ',' armor_trait
            | trait ':' finish
            ;

        finish
            : <fuel_block_name>
            ;

        armor_trait
            : armor_material
            | armor_skill_type
            ;

        armor_material
            : "le", "sl", "bl", "br", "sc", "ch", "ba", "pl", "fp", "bp"
            ;

        armor_skill_type
            : "f", "r", "m"
            ;
    */

// Check for macros.

    /*
        trait
            : <NULL>
            | '*'
            | pcontent_type
            | attack_class
            | template_name
            | macro_name
            ;

        pcontent_type
            : "armor" | "weapon" | "amulet" | "ring" | "body" | "helm"
            | "gloves" | "boots" | "shield" | "melee" | "ranged" | "spell"
            | "nmagic" | "cmagic" | "scroll" | "potion" | "spellbook"
            ;

        attack_class
            : "beastfu" | "axe" | "club" | "dagger" | "hammer" | "longsword"
            | "mace" | "staff" | "sword" | "bow" | "minigun" | "arrow" | "bolt"
            | "combat_magic" | "nature_magic"
            ;
    */

// Parse params.

    /*
        params
            : param
            | params '/' param
            ;

        param
            : power_range
            | modifier
            | option
            | seed
            ;

        power_range
            : bound
            | '-' bound
            | bound '-'
            | bound '-' bound
            ;

        bound
            : '*'
            | <float literal>
            ;

        modifier
            : '+' modifier_name     // name of fuel block for modifier - up to MAX_MODIFIERS allowed per query
            ;

        option
            : "-no_mod"             // no modifiers allowed
            | "-no_orn"             // no ornate finish allowed
            ;
    */