29685214814

Committed 19 Jul 2026 11:29AM UTC coverage: 90.794% (+0.3%) from 90.53%

Build # 29685214814

Build Type

Pull #46

github

Committed by

rieske

Commit Message

Experimental parser generator optimization

Pull Request Pull Request #46: Experimental parser generator optimization

Coverage Stats

492 of 500 new or added lines in 17 files covered. (98.4%)

16 existing lines in 6 files now uncovered.

5286 of 5822 relevant lines covered (90.79%)

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98.89

/src/parser/CanonicalCollection.cpp

#include "CanonicalCollection.h"

#include "HashCombine.h"
#include "util/LogManager.h"
#include "util/Logger.h"

#include <algorithm>
#include <cstdint>
#include <deque>
#include <unordered_map>
#include <utility>
#include <vector>

namespace {

Logger& logger = LogManager::getComponentLogger(Component::PARSER);

using namespace parser;


void closeItemSet(
        const FirstTable& first,
        const Grammar& grammar,
        GenerationBuffers& buffers,
        std::vector<LR1Item>& items) {
    auto& coreIndex = buffers.coreIndex;
    auto& worklist = buffers.worklist;
    buffers.prepareClosure(items.size());

    for (std::size_t i = 0; i < items.size(); ++i) {
        coreIndex.emplace(items[i].coreKey(), i);
        worklist.push_back(i);
    }
    items.reserve(std::max(items.capacity(), items.size() + 64));

    std::size_t head = 0;
    while (head < worklist.size()) {
        const std::size_t index = worklist[head++];
        if (!items[index].hasUnvisitedSymbols() || grammar.isTerminal(items[index].nextUnvisitedSymbol())) {
            continue;
        }

        const int B = items[index].nextUnvisitedSymbol();
        const LR1Item::LookaheadSet propagated = items[index].hasSymbolsAfterNext()
                ? first.firstBits(items[index].symbolAfterNext())
                : items[index].lookaheads();

        for (const auto& production : grammar.getProductionsOfSymbol(B)) {
            const std::uint64_t key =
                    (static_cast<std::uint64_t>(static_cast<std::uint32_t>(production.getId())) << 32);
            const auto existing = coreIndex.find(key);
            if (existing == coreIndex.end()) {
                items.emplace_back(production, propagated);
                const std::size_t newIndex = items.size() - 1;
                coreIndex.emplace(key, newIndex);
                worklist.push_back(newIndex);
            } else if (items[existing->second].mergeLookaheads(propagated)) {
                worklist.push_back(existing->second);
            }
        }
    }
}

std::unordered_map<int, std::vector<LR1Item>> gotoAllFrom(
        const std::vector<LR1Item>& I,
        const FirstTable& first,
        const Grammar& grammar,
        GenerationBuffers& buffers) {
    std::unordered_map<int, std::vector<LR1Item>> bySymbol;
    bySymbol.reserve(I.size());
    for (const auto& item : I) {
        if (item.hasUnvisitedSymbols()) {
            bySymbol[item.nextUnvisitedSymbol()].push_back(item.advance());
        }
    }
    for (auto& entry : bySymbol) {
        entry.second.reserve(entry.second.size() + 16);
        closeItemSet(first, grammar, buffers, entry.second);
    }
    return bySymbol;
}

// --- LALR(1) ---

std::vector<std::uint64_t> makeCoreSignature(const std::vector<LR1Item>& items, GenerationBuffers& buffers) {
    auto& signature = buffers.coreSignature;
    signature.clear();
    signature.reserve(items.size());
    for (const auto& item : items) {
        signature.push_back(item.coreKey());
    }
    std::sort(signature.begin(), signature.end());
    return signature;
}

struct CoreSignatureHash {
    std::size_t operator()(const std::vector<std::uint64_t>& signature) const noexcept {
        std::size_t hash = signature.size();
        for (const std::uint64_t key : signature) {
            hashCombine(hash, key);
        }
        return hash;
    }
};

bool mergeLookaheadsByCore(
        std::vector<LR1Item>& existing,
        const std::vector<LR1Item>& incoming,
        GenerationBuffers& buffers) {
    buffers.prepareMerge(existing.size());
    auto& index = buffers.mergeIndexByCore;
    for (std::size_t i = 0; i < existing.size(); ++i) {
        index.emplace(existing[i].coreKey(), i);
    }
    bool merged = false;
    for (const auto& item : incoming) {
        merged |= existing[index.at(item.coreKey())].mergeLookaheads(item.lookaheads());
    }
    return merged;
}

void computeLALR1(
        std::vector<std::vector<LR1Item>>& canonicalCollection,
        GotoMap& computedGotos,
        const std::vector<int>& symbolOrder,
        const FirstTable& first,
        const Grammar& grammar,
        GenerationBuffers& buffers) {
    std::unordered_map<std::vector<std::uint64_t>, std::size_t, CoreSignatureHash> stateByCores;
    stateByCores.reserve(512);
    stateByCores.emplace(makeCoreSignature(canonicalCollection[0], buffers), 0);
    computedGotos.reserve(symbolOrder.size() * 8);

    std::deque<std::size_t> worklist { 0 };
    std::vector<char> inQueue(1, 1);

    auto enqueue = [&](std::size_t state) {
        if (state >= inQueue.size()) {
            inQueue.resize(state + 1, 0);
        }
        if (!inQueue[state]) {
            inQueue[state] = 1;
            worklist.push_back(state);
        }
    };

    while (!worklist.empty()) {
        const std::size_t state = worklist.front();
        worklist.pop_front();
        inQueue[state] = 0;

        auto gotos = gotoAllFrom(canonicalCollection[state], first, grammar, buffers);
        // Walk symbols in stable grammar order; only process non-empty gotos.
        for (const int X : symbolOrder) {
            const auto git = gotos.find(X);
            if (git == gotos.end() || git->second.empty()) {
                continue;
            }
            auto& gotoSet = git->second;
            auto signature = makeCoreSignature(gotoSet, buffers);
            const auto existing = stateByCores.find(signature);
            if (existing == stateByCores.end()) {
                const std::size_t newState = canonicalCollection.size();
                canonicalCollection.push_back(std::move(gotoSet));
                stateByCores.emplace(std::move(signature), newState);
                computedGotos[{ state, X }] = newState;
                enqueue(newState);
            } else {
                const std::size_t target = existing->second;
                computedGotos[{ state, X }] = target;
                if (mergeLookaheadsByCore(canonicalCollection[target], gotoSet, buffers)) {
                    enqueue(target);
                }
            }
        }
    }
}

// --- LR(1) ---

using ItemSetSignature = std::vector<std::pair<std::uint64_t, LR1Item::LookaheadSet>>;

ItemSetSignature makeItemSetSignature(const std::vector<LR1Item>& items) {
    ItemSetSignature signature;
    signature.reserve(items.size());
    for (const auto& item : items) {
        signature.emplace_back(item.coreKey(), item.lookaheads());
    }
    // Cores are unique within a closed item set; sort by core only.
    std::sort(signature.begin(), signature.end(),
            [](const auto& left, const auto& right) {
                return left.first < right.first;
            });
    return signature;
}

struct ItemSetSignatureHash {
    std::size_t operator()(const ItemSetSignature& signature) const noexcept {
        std::size_t hash = signature.size();
        for (const auto& entry : signature) {
            hashCombine(hash, entry.first);
            for (std::size_t i = 0; i < entry.second.size(); i += 64) {
                unsigned long long word = 0;
                for (std::size_t b = 0; b < 64 && i + b < entry.second.size(); ++b) {
                    if (entry.second.test(i + b)) {
                        word |= 1ULL << b;
                    }
                }
                hashCombine(hash, word);
            }
        }
        return hash;
    }
};

void computeLR1(
        std::vector<std::vector<LR1Item>>& canonicalCollection,
        GotoMap& computedGotos,
        const std::vector<int>& symbolOrder,
        const FirstTable& first,
        const Grammar& grammar,
        GenerationBuffers& buffers) {
    std::unordered_map<ItemSetSignature, std::size_t, ItemSetSignatureHash> stateByItems;
    stateByItems.reserve(256);
    stateByItems.emplace(makeItemSetSignature(canonicalCollection[0]), 0);

    for (std::size_t i = 0; i < canonicalCollection.size(); ++i) {
        auto gotos = gotoAllFrom(canonicalCollection[i], first, grammar, buffers);
        for (const int X : symbolOrder) {
            const auto git = gotos.find(X);
            if (git == gotos.end() || git->second.empty()) {
                continue;
            }
            auto& gotoSet = git->second;
            auto signature = makeItemSetSignature(gotoSet);
            const auto existing = stateByItems.find(signature);
            if (existing == stateByItems.end()) {
                const std::size_t newState = canonicalCollection.size();
                canonicalCollection.push_back(std::move(gotoSet));
                stateByItems.emplace(std::move(signature), newState);
                computedGotos[{ i, X }] = newState;
            } else {
                computedGotos[{ i, X }] = existing->second;
            }
        }
    }
}

} // namespace

namespace parser {

CanonicalCollection::CanonicalCollection(
        const FirstTable& firstTable,
        const Grammar& grammar,
        AutomatonKind kind) :
        firstTable { firstTable }
{
    // Nonterminals then terminals — stable order for state numbering / table identity.
    std::vector<int> symbolOrder = grammar.getNonterminalIDs();
    const auto& terminals = grammar.getTerminalIDs();
    symbolOrder.insert(symbolOrder.end(), terminals.begin(), terminals.end());

    std::vector<LR1Item> initialSet {
        LR1Item { grammar.getTopRule(), std::vector<int>{ grammar.getEndSymbol() }, grammar }
    };
    closeItemSet(firstTable, grammar, buffers, initialSet);
    canonicalCollection.push_back(std::move(initialSet));

    if (kind == AutomatonKind::LALR1) {
        computeLALR1(canonicalCollection, computedGotos, symbolOrder, firstTable, grammar, buffers);
    } else {
        computeLR1(canonicalCollection, computedGotos, symbolOrder, firstTable, grammar, buffers);
    }

    logCollection(grammar);
}

std::size_t CanonicalCollection::stateCount() const noexcept {
    return canonicalCollection.size();
}

const std::vector<LR1Item>& CanonicalCollection::setOfItemsAtState(size_t state) const {
    return canonicalCollection.at(state);
}

std::size_t CanonicalCollection::goTo(std::size_t stateFrom, int symbol) const {
    return computedGotos.at({ stateFrom, symbol });
}

std::optional<std::size_t> CanonicalCollection::findGoTo(std::size_t stateFrom, int symbol) const noexcept {
    const auto it = computedGotos.find({ stateFrom, symbol });
    return it != computedGotos.end() ? std::optional<std::size_t>{ it->second } : std::nullopt;
}

void CanonicalCollection::logCollection(const Grammar& grammar) const {
    if (logger.isNull()) {
        return;
    }
    logger << "\n*********************\nCanonical collection:\n*********************\n";
    int setNo = 0;
    for (const auto& setOfItems : canonicalCollection) {
        logger << "Set " << setNo++ << ":\n";
        for (const auto& item : setOfItems) {
            logger << item.str(grammar);
        }
        logger << "\n";
    }
    logger << "Computed GOTOs:\n";
    for (const auto& g : computedGotos) {
        logger << g.first.first << "\t" << g.first.second << "\t" << g.second << "\n";
    }
}

} // namespace parser

1	#include "CanonicalCollection.h"
2
3	#include "HashCombine.h"
4	#include "util/LogManager.h"
5	#include "util/Logger.h"
6
7	#include <algorithm>
8	#include <cstdint>
9	#include <deque>
10	#include <unordered_map>
11	#include <utility>
12	#include <vector>
13
14	namespace {
15
16	Logger& logger = LogManager::getComponentLogger(Component::PARSER);
17
18	using namespace parser;
19
20
21	void closeItemSet(	113,346 ✔
22	const FirstTable& first,
23	const Grammar& grammar,
24	GenerationBuffers& buffers,
25	std::vector<LR1Item>& items) {
26	auto& coreIndex = buffers.coreIndex;	113,346 ✔
27	auto& worklist = buffers.worklist;	113,346 ✔
28	buffers.prepareClosure(items.size());	113,346 ✔
29
30	for (std::size_t i = 0; i < items.size(); ++i) {	304,860 ✔
31	coreIndex.emplace(items[i].coreKey(), i);	191,514 ✔
32	worklist.push_back(i);	191,514 ✔
33	}
34	items.reserve(std::max(items.capacity(), items.size() + 64));	113,346 ✔
35
36	std::size_t head = 0;	113,346 ✔
37	while (head < worklist.size()) {	3,039,418 ✔
38	const std::size_t index = worklist[head++];	2,926,072 ✔
39	if (!items[index].hasUnvisitedSymbols() \|\| grammar.isTerminal(items[index].nextUnvisitedSymbol())) {	2,926,072 ✔
40	continue;	896,562 ✔
41	}
42
43	const int B = items[index].nextUnvisitedSymbol();	2,029,510 ✔
44	const LR1Item::LookaheadSet propagated = items[index].hasSymbolsAfterNext()	2,029,510 ✔
45	? first.firstBits(items[index].symbolAfterNext())	2,029,510 ✔
46	: items[index].lookaheads();	568,156 ✔
47
48	for (const auto& production : grammar.getProductionsOfSymbol(B)) {	12,826,582 ✔
49	const std::uint64_t key =
50	(static_cast<std::uint64_t>(static_cast<std::uint32_t>(production.getId())) << 32);	10,797,072 ✔
51	const auto existing = coreIndex.find(key);	10,797,072 ✔
52	if (existing == coreIndex.end()) {	10,797,072 ✔
53	items.emplace_back(production, propagated);	991,300 ✔
54	const std::size_t newIndex = items.size() - 1;	991,300 ✔
55	coreIndex.emplace(key, newIndex);	991,300 ✔
56	worklist.push_back(newIndex);	991,300 ✔
57	} else if (items[existing->second].mergeLookaheads(propagated)) {	9,805,772 ✔
58	worklist.push_back(existing->second);	1,743,258 ✔
59	}
60	}
61	}
62	}	113,346 ✔
63
64	std::unordered_map<int, std::vector<LR1Item>> gotoAllFrom(	12,004 ✔
65	const std::vector<LR1Item>& I,
66	const FirstTable& first,
67	const Grammar& grammar,
68	GenerationBuffers& buffers) {
69	std::unordered_map<int, std::vector<LR1Item>> bySymbol;	12,004 ✔
70	bySymbol.reserve(I.size());	12,004 ✔
71	for (const auto& item : I) {	210,548 ✔
72	if (item.hasUnvisitedSymbols()) {	198,544 ✔
73	bySymbol[item.nextUnvisitedSymbol()].push_back(item.advance());	191,488 ✔
74	}
75	}
76	for (auto& entry : bySymbol) {	125,324 ✔
77	entry.second.reserve(entry.second.size() + 16);	113,320 ✔
78	closeItemSet(first, grammar, buffers, entry.second);	113,320 ✔
79	}
80	return bySymbol;	12,004 ✔
NEW UNCOV 81	}	×
82
83	// --- LALR(1) ---
84
85	std::vector<std::uint64_t> makeCoreSignature(const std::vector<LR1Item>& items, GenerationBuffers& buffers) {	54,632 ✔
86	auto& signature = buffers.coreSignature;	54,632 ✔
87	signature.clear();	54,632 ✔
88	signature.reserve(items.size());	54,632 ✔
89	for (const auto& item : items) {	646,946 ✔
90	signature.push_back(item.coreKey());	592,314 ✔
91	}
92	std::sort(signature.begin(), signature.end());	54,632 ✔
93	return signature;	54,632 ✔
94	}
95
96	struct CoreSignatureHash {
97	std::size_t operator()(const std::vector<std::uint64_t>& signature) const noexcept {	74,586 ✔
98	std::size_t hash = signature.size();	74,586 ✔
99	for (const std::uint64_t key : signature) {	890,124 ✔
100	hashCombine(hash, key);	815,538 ✔
101	}
102	return hash;	74,586 ✔
103	}
104	};
105
106	bool mergeLookaheadsByCore(	51,370 ✔
107	std::vector<LR1Item>& existing,
108	const std::vector<LR1Item>& incoming,
109	GenerationBuffers& buffers) {
110	buffers.prepareMerge(existing.size());	51,370 ✔
111	auto& index = buffers.mergeIndexByCore;	51,370 ✔
112	for (std::size_t i = 0; i < existing.size(); ++i) {	592,620 ✔
113	index.emplace(existing[i].coreKey(), i);	541,250 ✔
114	}
115	bool merged = false;	51,370 ✔
116	for (const auto& item : incoming) {	592,620 ✔
117	merged \|= existing[index.at(item.coreKey())].mergeLookaheads(item.lookaheads());	541,250 ✔
118	}
119	return merged;	51,370 ✔
120	}
121
122	void computeLALR1(	16 ✔
123	std::vector<std::vector<LR1Item>>& canonicalCollection,
124	GotoMap& computedGotos,
125	const std::vector<int>& symbolOrder,
126	const FirstTable& first,
127	const Grammar& grammar,
128	GenerationBuffers& buffers) {
129	std::unordered_map<std::vector<std::uint64_t>, std::size_t, CoreSignatureHash> stateByCores;	16 ✔
130	stateByCores.reserve(512);	16 ✔
131	stateByCores.emplace(makeCoreSignature(canonicalCollection[0], buffers), 0);	16 ✔
132	computedGotos.reserve(symbolOrder.size() * 8);	16 ✔
133
134	std::deque<std::size_t> worklist { 0 };	48 ✔
135	std::vector<char> inQueue(1, 1);	16 ✔
136
137	auto enqueue = [&](std::size_t state) {	6,470 ✔
138	if (state >= inQueue.size()) {	6,470 ✔
139	inQueue.resize(state + 1, 0);	3,246 ✔
140	}
141	if (!inQueue[state]) {	6,470 ✔
142	inQueue[state] = 1;	5,550 ✔
143	worklist.push_back(state);	5,550 ✔
144	}
145	};	6,470 ✔
146
147	while (!worklist.empty()) {	5,582 ✔
148	const std::size_t state = worklist.front();	5,566 ✔
149	worklist.pop_front();	5,566 ✔
150	inQueue[state] = 0;	5,566 ✔
151
152	auto gotos = gotoAllFrom(canonicalCollection[state], first, grammar, buffers);	5,566 ✔
153	// Walk symbols in stable grammar order; only process non-empty gotos.
154	for (const int X : symbolOrder) {	783,300 ✔
155	const auto git = gotos.find(X);	777,734 ✔
156	if (git == gotos.end() \|\| git->second.empty()) {	777,734 ✔
157	continue;	723,118 ✔
158	}
159	auto& gotoSet = git->second;	54,616 ✔
160	auto signature = makeCoreSignature(gotoSet, buffers);	54,616 ✔
161	const auto existing = stateByCores.find(signature);	54,616 ✔
162	if (existing == stateByCores.end()) {	54,616 ✔
163	const std::size_t newState = canonicalCollection.size();	3,246 ✔
164	canonicalCollection.push_back(std::move(gotoSet));	3,246 ✔
165	stateByCores.emplace(std::move(signature), newState);	3,246 ✔
166	computedGotos[{ state, X }] = newState;	3,246 ✔
167	enqueue(newState);	3,246 ✔
168	} else {
169	const std::size_t target = existing->second;	51,370 ✔
170	computedGotos[{ state, X }] = target;	51,370 ✔
171	if (mergeLookaheadsByCore(canonicalCollection[target], gotoSet, buffers)) {	51,370 ✔
172	enqueue(target);	3,224 ✔
173	}
174	}
175	}	54,616 ✔
176	}	5,566 ✔
177	}	16 ✔
178
179	// --- LR(1) ---
180
181	using ItemSetSignature = std::vector<std::pair<std::uint64_t, LR1Item::LookaheadSet>>;
182
183	ItemSetSignature makeItemSetSignature(const std::vector<LR1Item>& items) {	58,714 ✔
184	ItemSetSignature signature;	58,714 ✔
185	signature.reserve(items.size());	58,714 ✔
186	for (const auto& item : items) {	649,214 ✔
187	signature.emplace_back(item.coreKey(), item.lookaheads());	590,500 ✔
188	}
189	// Cores are unique within a closed item set; sort by core only.
190	std::sort(signature.begin(), signature.end(),	58,714 ✔
191	[](const auto& left, const auto& right) {	3,577,638 ✔
192	return left.first < right.first;	3,577,638 ✔
193	});
194	return signature;	58,714 ✔
NEW UNCOV 195	}	×
196
197	struct ItemSetSignatureHash {
198	std::size_t operator()(const ItemSetSignature& signature) const noexcept {	104,314 ✔
199	std::size_t hash = signature.size();	104,314 ✔
200	for (const auto& entry : signature) {	1,282,006 ✔
201	hashCombine(hash, entry.first);	1,177,692 ✔
202	for (std::size_t i = 0; i < entry.second.size(); i += 64) {	3,533,076 ✔
203	unsigned long long word = 0;	2,355,384 ✔
204	for (std::size_t b = 0; b < 64 && i + b < entry.second.size(); ++b) {	153,099,960 ✔
205	if (entry.second.test(i + b)) {	150,744,576 ✔
206	word \|= 1ULL << b;	23,600,556 ✔
207	}
208	}
209	hashCombine(hash, word);	2,355,384 ✔
210	}
211	}
212	return hash;	104,314 ✔
213	}
214	};
215
216	void computeLR1(	10 ✔
217	std::vector<std::vector<LR1Item>>& canonicalCollection,
218	GotoMap& computedGotos,
219	const std::vector<int>& symbolOrder,
220	const FirstTable& first,
221	const Grammar& grammar,
222	GenerationBuffers& buffers) {
223	std::unordered_map<ItemSetSignature, std::size_t, ItemSetSignatureHash> stateByItems;	10 ✔
224	stateByItems.reserve(256);	10 ✔
225	stateByItems.emplace(makeItemSetSignature(canonicalCollection[0]), 0);	10 ✔
226
227	for (std::size_t i = 0; i < canonicalCollection.size(); ++i) {	6,448 ✔
228	auto gotos = gotoAllFrom(canonicalCollection[i], first, grammar, buffers);	6,438 ✔
229	for (const int X : symbolOrder) {	839,604 ✔
230	const auto git = gotos.find(X);	833,166 ✔
231	if (git == gotos.end() \|\| git->second.empty()) {	833,166 ✔
232	continue;	774,462 ✔
233	}
234	auto& gotoSet = git->second;	58,704 ✔
235	auto signature = makeItemSetSignature(gotoSet);	58,704 ✔
236	const auto existing = stateByItems.find(signature);	58,704 ✔
237	if (existing == stateByItems.end()) {	58,704 ✔
238	const std::size_t newState = canonicalCollection.size();	6,428 ✔
239	canonicalCollection.push_back(std::move(gotoSet));	6,428 ✔
240	stateByItems.emplace(std::move(signature), newState);	6,428 ✔
241	computedGotos[{ i, X }] = newState;	6,428 ✔
242	} else {
243	computedGotos[{ i, X }] = existing->second;	52,276 ✔
244	}
245	}	58,704 ✔
246	}	6,438 ✔
247	}	10 ✔
248
249	} // namespace
250
251	namespace parser {
252
253	CanonicalCollection::CanonicalCollection(	26 ✔
254	const FirstTable& firstTable,
255	const Grammar& grammar,
256	AutomatonKind kind) :	26 ✔
257	firstTable { firstTable }	26 ✔
258	{
259	// Nonterminals then terminals — stable order for state numbering / table identity.
260	std::vector<int> symbolOrder = grammar.getNonterminalIDs();	26 ✔
261	const auto& terminals = grammar.getTerminalIDs();	26 ✔
262	symbolOrder.insert(symbolOrder.end(), terminals.begin(), terminals.end());	26 ✔
263
264	std::vector<LR1Item> initialSet {
265	LR1Item { grammar.getTopRule(), std::vector<int>{ grammar.getEndSymbol() }, grammar }	52 ✔
266	};	104 ✔
267	closeItemSet(firstTable, grammar, buffers, initialSet);	26 ✔
268	canonicalCollection.push_back(std::move(initialSet));	26 ✔
269
270	if (kind == AutomatonKind::LALR1) {	26 ✔
271	computeLALR1(canonicalCollection, computedGotos, symbolOrder, firstTable, grammar, buffers);	16 ✔
272	} else {
273	computeLR1(canonicalCollection, computedGotos, symbolOrder, firstTable, grammar, buffers);	10 ✔
274	}
275
276	logCollection(grammar);	26 ✔
277	}	26 ✔
278
279	std::size_t CanonicalCollection::stateCount() const noexcept {	42 ✔
280	return canonicalCollection.size();	42 ✔
281	}
282
283	const std::vector<LR1Item>& CanonicalCollection::setOfItemsAtState(size_t state) const {	3,492 ✔
284	return canonicalCollection.at(state);	3,492 ✔
285	}
286
287	std::size_t CanonicalCollection::goTo(std::size_t stateFrom, int symbol) const {	21,276 ✔
288	return computedGotos.at({ stateFrom, symbol });	21,276 ✔
289	}
290
291	std::optional<std::size_t> CanonicalCollection::findGoTo(std::size_t stateFrom, int symbol) const noexcept {	188,684 ✔
292	const auto it = computedGotos.find({ stateFrom, symbol });	188,684 ✔
293	return it != computedGotos.end() ? std::optional<std::size_t>{ it->second } : std::nullopt;	188,684 ✔
294	}
295
296	void CanonicalCollection::logCollection(const Grammar& grammar) const {	26 ✔
297	if (logger.isNull()) {	26 ✔
298	return;	24 ✔
299	}
300	logger << "\n*******************\nCanonical collection:\n*******************\n";	2 ✔
301	int setNo = 0;	2 ✔
302	for (const auto& setOfItems : canonicalCollection) {	16 ✔
303	logger << "Set " << setNo++ << ":\n";	14 ✔
304	for (const auto& item : setOfItems) {	42 ✔
305	logger << item.str(grammar);	28 ✔
306	}
307	logger << "\n";	14 ✔
308	}
309	logger << "Computed GOTOs:\n";	2 ✔
310	for (const auto& g : computedGotos) {	22 ✔
311	logger << g.first.first << "\t" << g.first.second << "\t" << g.second << "\n";	20 ✔
312	}
313	}
314
315	} // namespace parser

rieske / trans / 29685214814

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