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LR0: Created data strcuture to represent intermediate parsing table

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Paul Beckingham 2015-12-27 11:17:39 -05:00
parent a3260246bf
commit 26e0a472ac
1 changed files with 18 additions and 0 deletions
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18
src/LR0.h
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@ -40,6 +40,24 @@ public:
void debug (bool);
std::string dump () const;
protected:
class Item
{
public:
Item (int rule, int cursor) : _rule (rule), _cursor (cursor) {}
int _rule;
int _cursor;
};
class Closure : public std::vector <Item>
{
};
class States : public std::vector <Closure>
{
};
private:
bool expandNonTerminals (std::vector <std::vector <std::string>>&, std::vector <std::pair <int, int>>&);