75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
#ifndef PARSER_H
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#define PARSER_H
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#include "util.h"
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#include "ParseRule.h"
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#include "ParseAction.h"
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#include "Symbol.h"
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#include "State.h"
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#include "StringReader.h"
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#include "Lexer.h"
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#include "NodeTree.h"
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#include "Table.h"
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#include <queue>
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#include <set>
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#include <map>
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#include <vector>
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#include <algorithm>
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#include <stack>
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#include <string>
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#include <iostream>
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class Parser {
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public:
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Parser();
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~Parser();
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virtual void loadGrammer(std::string grammerInputString);
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virtual void createStateSet();
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virtual std::string stateSetToString();
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virtual NodeTree<Symbol>* parseInput(std::string inputString) = 0;
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virtual std::string grammerToString();
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virtual std::string grammerToDOT();
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std::string tableToString();
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void exportTable(std::ofstream &file);
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void importTable(char* tableData);
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protected:
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std::vector<Symbol> firstSet(Symbol token, std::vector<Symbol> avoidList = std::vector<Symbol>(), bool addNewTokens = true);
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bool isNullable(Symbol token);
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bool isNullableHelper(Symbol token, std::set<Symbol> done);
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std::map<Symbol, std::vector<Symbol>> tokenFirstSet;
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std::map<Symbol, bool> tokenNullable;
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std::vector<Symbol> incrementiveFollowSet(ParseRule* rule);
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virtual void closure(State* state);
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virtual void addStates(std::vector< State* >* stateSets, State* state, std::queue<State*>* toDo);
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int stateNum(State* state);
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StringReader reader;
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Lexer lexer;
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std::map<std::pair<std::string, bool>, Symbol> symbols;
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std::vector<ParseRule*> loadedGrammer;
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std::vector< State* > stateSets;
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Symbol EOFSymbol;
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Symbol nullSymbol;
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Symbol invalidSymbol;
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Table table;
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std::stack<int> stateStack;
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std::stack<Symbol> symbolStack;
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Symbol getOrAddSymbol(std::string symbolString, bool isTerminal);
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NodeTree<Symbol>* reduceTreeCombine(Symbol newSymbol, std::vector<Symbol> &symbols);
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};
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#endif
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