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TODO : Make RE Grammar template independent. Difine Unified grammar format.

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IlyaShurupov 2023-11-02 15:55:55 +03:00 • committed by Ilusha
parent 7ed6b1f33c
commit 38957e678b
4 changed files with 115 additions and 11 deletions
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63
Language/public/Grammar.hpp
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@ -3,11 +3,70 @@
#include "Buffer.hpp"
#include "LanguageCommon.hpp"
#include "Utils.hpp"
#include "Map.hpp"
#include "Strings.hpp"
namespace tp {
class ContextFreeGrammar {};
class ContextFreeGrammar {
public:
struct Arg {
friend class Rule;
public:
Arg() = default;
explicit Arg(const String& id, bool terminal = true, bool epsilon = false);
public:
bool operator==(const Arg& in) const;
[[nodiscard]] const String& getId() const;
private:
String mId;
bool mIsTerminal = false;
bool mIsEpsilon = false;
};
class Rule {
public:
Rule() = default;
Rule(const String& id, const InitialierList<Arg>& args);
public:
bool operator==(const Rule& in) const;
[[nodiscard]] bool isProductive() const;
private:
String mId;
Buffer<Arg> mArgs;
};
private:
// cache data
struct NonTerminal {
Buffer<Rule*> rules;
Map<String, NonTerminal*> references;
Map<String, NonTerminal*> referencing;
public:
[[nodiscard]] bool isProductive() const;
[[nodiscard]] bool isLooped(Map<String, ualni>& processed, const String& id) const;
};
public:
ContextFreeGrammar() = default;
public:
void addRule(const Rule& rule);
void addRule(const String& id, const InitialierList<Arg>& args);
void setStart(const String& startRule);
private:
Map<String, NonTerminal> mNonTerminals;
Buffer<Rule> mRules;
String mStartTerminal;
bool mIsLooped = false;
};
template <typename tAlphabetType, typename tTokType>
class RegularGrammar {