修正代码
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satunreric
parent
70ac1bb025
commit
f7355e63e2
@ -1,6 +1,6 @@
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cmake_minimum_required(VERSION 3.17)
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project(syntaxParser)
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_CXX_STANDARD 14)
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add_executable(syntaxParser main.cpp)
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77
main.cpp
77
main.cpp
@ -9,6 +9,7 @@
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#include <map>
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#include <functional>
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#include <iomanip>
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#include <algorithm>
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using namespace std;
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@ -62,7 +63,7 @@ public:
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line.push_back(symbol);
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}
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const vector<const Symbol *> &getAllSymbols() const {
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[[nodiscard]] const vector<const Symbol *> &getAllSymbols() const {
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return line;
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}
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@ -91,7 +92,7 @@ public:
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return symbol->index;
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}
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const Symbol *getSymbol(int symbol_index) const {
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[[nodiscard]] const Symbol *getSymbol(int symbol_index) const {
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const auto &it = cache.find(symbol_index);
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if(it != cache.end()) {
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return it->second;
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@ -100,7 +101,7 @@ public:
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}
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}
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int getSymbolIndex(const wstring &name) const {
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[[nodiscard]] int getSymbolIndex(const wstring &name) const {
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const auto &it = table.find(name);
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if(it != table.end()) {
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return it->second->index;
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@ -119,7 +120,7 @@ public:
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}
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}
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const Symbol *getStartSymbol() const {
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[[nodiscard]] const Symbol *getStartSymbol() const {
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for(const auto & symbol : getAllSymbols()) {
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if(symbol->start) {
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return symbol;
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@ -428,15 +429,15 @@ public:
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productions.push_back(p_pdt);
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}
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const vector<const Production *> &get_productions() const {
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[[nodiscard]] const vector<const Production *> &get_productions() const {
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return productions;
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}
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const Symbol *getSymbol(int symbol_index) const {
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[[nodiscard]] const Symbol *getSymbol(int symbol_index) const {
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return symbolTable.getSymbol(symbol_index);
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}
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const Symbol *getStartSymbol() const {
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[[nodiscard]] const Symbol *getStartSymbol() const {
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return symbolTable.getStartSymbol();
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}
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@ -454,7 +455,7 @@ public:
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return p_pdt;
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}
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const vector<const Symbol *> &getAllSymbols() const {
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[[nodiscard]] const vector<const Symbol *> &getAllSymbols() const {
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return symbolTable.getAllSymbols();
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}
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@ -487,11 +488,11 @@ public:
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this->dot_index = m_dot_index;
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}
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int get_dot_index() const {
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[[nodiscard]] int get_dot_index() const {
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return dot_index;
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}
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int get_dot_next_symbol() const {
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[[nodiscard]] int get_dot_next_symbol() const {
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if(get_dot_index() == production->right.size()) {
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return 0;
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} else {
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@ -499,7 +500,7 @@ public:
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}
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}
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int get_dot_next_i_symbol(int i) const {
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[[nodiscard]] int get_dot_next_i_symbol(int i) const {
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if(get_dot_index() + i >= production->right.size()) {
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return 0;
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} else {
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@ -507,11 +508,11 @@ public:
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}
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}
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int get_terminator() const {
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[[nodiscard]] int get_terminator() const {
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return terminator;
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}
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const Production *get_production() const {
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[[nodiscard]] const Production *get_production() const {
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return production;
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}
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};
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@ -524,7 +525,7 @@ class ItemCollection{
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map<size_t, Item *> items;
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vector<const Item *> cache;
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vector<Item *> cache;
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GrammarResourcePool *pool;
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@ -537,17 +538,27 @@ class ItemCollection{
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seed ^= hasher(v) + 0x9e3779b9 + (seed<<6) + (seed>>2);
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}
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static bool compare_item_ptr(const Item* lhs, const Item* rhs)
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{
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if(lhs->get_production() != rhs->get_production())
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return lhs->get_production() < rhs->get_production();
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else if(lhs->get_dot_index() != rhs->get_dot_index())
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return lhs->get_dot_index() < rhs->get_dot_index();
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else
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return lhs->get_terminator() < rhs->get_terminator();
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}
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public:
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explicit ItemCollection(GrammarResourcePool *pool) : pool(pool) {
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}
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const vector<const Item *> &getItems() const {
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[[nodiscard]] const vector<Item *> &getItems() const {
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return cache;
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}
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int getIndex() const {
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[[nodiscard]] int getIndex() const {
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return index;
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}
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@ -617,20 +628,24 @@ public:
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wcout << pool->getSymbol(p_pdt->left)->name << L" -> " ;
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int i = 0;
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for(const auto &symbol : p_pdt->right) {
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if(i++ == dot_index) cout << "·";
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if(i++ == dot_index) wcout << L'*';
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wcout << pool->getSymbol(symbol)->name;
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}
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if(i++ == dot_index) cout << "·";
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if(i++ == dot_index) wcout << L'*';
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wcout << L"," << pool->getSymbol(item->get_terminator())->name << endl;
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wcout << L',' << pool->getSymbol(item->get_terminator())->name << endl;
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}
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cout << endl;
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}
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size_t getHash() const {
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[[nodiscard]] size_t getHash() const {
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size_t seed = 0;
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for(const auto item : cache) {
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vector<Item *> cache_sorted(cache.begin(), cache.end());
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sort(cache_sorted.begin(), cache_sorted.end(), compare_item_ptr);
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for(const auto item : cache_sorted) {
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if(item->generated) {
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continue;
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@ -656,7 +671,7 @@ class ItemCollectionManager{
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GrammarResourcePool *pool;
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const Production *start_pdt;
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const Production *start_pdt{};
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template <class T>
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inline void hash_combine(std::size_t& seed, const T& v) const
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@ -716,11 +731,11 @@ public:
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}
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const Production *getStartProduction() const {
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[[nodiscard]] const Production *getStartProduction() const {
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return start_pdt;
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}
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const vector<const ItemCollection *> &getItemCollections() const{
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[[nodiscard]] const vector<const ItemCollection *> &getItemCollections() const{
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return ics;
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}
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@ -763,7 +778,7 @@ public:
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}
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const ItemCollection* getGOTO(int idx, int symbol) const {
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[[nodiscard]] const ItemCollection* getGOTO(int idx, int symbol) const {
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auto hasher = hash<int>();
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size_t seed = hasher(idx);
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@ -809,13 +824,15 @@ class AnalyseTableGenerator {
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struct Step {
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const Action action;
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const union Target{
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union Target{
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int index;
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const Production *production;
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} target;
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} target{};
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Step(Action action, int index) : action(action), target(Target{index}){}
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Step(Action action, const Production *p_pdt) : action(action), target(Target{.production = p_pdt}){}
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Step(Action action, const Production *p_pdt) : action(action) {
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target.production = p_pdt;
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}
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};
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map<size_t, Step *> ACTION;
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@ -966,7 +983,7 @@ public:
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wcout << std::left << std::setw(4) << wstring(L"s") + to_wstring(p_step->target.index);
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else if(p_step->action == ACC)
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wcout << std::left << std::setw(4) << L"acc";
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else
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else if(p_step->action == STATUTE)
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wcout << std::left << std::setw(4) << L"r";
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}
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}
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@ -1022,8 +1039,6 @@ public:
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};
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int main() {
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clock_t start,end;//定义clock_t变量
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start = clock(); //开始时间
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