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Added Kleene star, plus, and optional

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This commit is contained in:
Jonathan Turner
2009-05-28 12:49:17 +00:00
parent 5f6ec9521b
commit af9bd41221
3 changed files with 114 additions and 7 deletions
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21
langkit/langkit_parser.hpp
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@@ -36,6 +36,15 @@ std::pair<Token_Iterator, bool> Or_Rule
std::pair<Token_Iterator, bool> And_Rule
(Token_Iterator iter, Token_Iterator end, TokenPtr parent, bool keep, int new_id, struct Rule lhs, struct Rule rhs);
std::pair<Token_Iterator, bool> Kleene_Rule
(Token_Iterator iter, Token_Iterator end, TokenPtr parent, bool keep, int new_id, struct Rule rule);
std::pair<Token_Iterator, bool> Plus_Rule
(Token_Iterator iter, Token_Iterator end, TokenPtr parent, bool keep, int new_id, struct Rule rule);
std::pair<Token_Iterator, bool> Optional_Rule
(Token_Iterator iter, Token_Iterator end, TokenPtr parent, bool keep, int new_id, struct Rule rule);
struct Rule {
RuleImplPtr impl;
@@ -64,6 +73,18 @@ struct Rule {
return Rule(boost::bind(And_Rule, _1, _2, _3, _4, _5, *this, rhs));
}
Rule operator*() {
return Rule(boost::bind(Kleene_Rule, _1, _2, _3, _4, _5, *this));
}
Rule operator+() {
return Rule(boost::bind(Plus_Rule, _1, _2, _3, _4, _5, *this));
}
Rule operator~() {
return Rule(boost::bind(Optional_Rule, _1, _2, _3, _4, _5, *this));
}
//const RuleImplPtr get_impl() const { return impl; }
//private: