diff options
Diffstat (limited to 'src/symbol.hpp')
| -rw-r--r-- | src/symbol.hpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/symbol.hpp b/src/symbol.hpp index 0e79eb6..e468d37 100644 --- a/src/symbol.hpp +++ b/src/symbol.hpp @@ -49,6 +49,7 @@ struct symbol_t : public std::tuple<symbol_type_t, std::string> { return std::get<1>(*this); } + static symbol_t make_nonterm(const std::string &value) { return symbol_t(SYMBOL_TYPE_NONTERM, value); } @@ -61,6 +62,10 @@ struct symbol_t : public std::tuple<symbol_type_t, std::string> { char v[2] = {char(value), 0}; return symbol_t(SYMBOL_TYPE_CHAR, v); } + + static symbol_t empty() { + return make_term(""); + } }; } |