tree-sitter/src/compiler/rules/symbol.cc

#include "compiler/rules/symbol.h"
#include <map>
#include <string>
#include "compiler/rules/visitor.h"

namespace tree_sitter  {
    using std::string;
    using std::hash;

    namespace rules {
        Symbol::Symbol(const std::string &name) : name(name) {}

        bool Symbol::operator==(const Rule &rule) const {
            const Symbol *other = dynamic_cast<const Symbol *>(&rule);
            return other && this->operator==(*other);
        }

        bool Symbol::operator==(const Symbol &other) const {
            return other.name == name;
        }

        size_t Symbol::hash_code() const {
            return hash<string>()(name);
        }

        rule_ptr Symbol::copy() const {
            return std::make_shared<Symbol>(*this);
        }

        string Symbol::to_string() const {
            return string("#<sym '") + name + "'>";
        }

        bool Symbol::operator<(const Symbol &other) const {
            return name < other.name;
        }

        void Symbol::accept(Visitor *visitor) const {
            visitor->visit(this);
        }
    }
}