From f43d32d6d2cc7ecd04f4f06f20d5a6fc2c87c9ae Mon Sep 17 00:00:00 2001 From: Aki Date: Tue, 12 Mar 2024 01:08:39 +0100 Subject: Another reorganization change that diverts me from crying unable to get rid off singleton madness --- FoundationEx/include/Dictionary.inl.h | 246 ++++++++++++++++++++++++++++++++++ 1 file changed, 246 insertions(+) create mode 100644 FoundationEx/include/Dictionary.inl.h (limited to 'FoundationEx/include/Dictionary.inl.h') diff --git a/FoundationEx/include/Dictionary.inl.h b/FoundationEx/include/Dictionary.inl.h new file mode 100644 index 0000000..cd58679 --- /dev/null +++ b/FoundationEx/include/Dictionary.inl.h @@ -0,0 +1,246 @@ +/* Starshatter: The Open Source Project + Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors + Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors + Copyright (c) 1997-2006, Destroyer Studios LLC. + + AUTHOR: John DiCamillo + + + OVERVIEW + ======== + Implementation of the Dictionary class +*/ + +#ifndef NDEBUG +#define DICT_CHECK(a, b) if ((a) == 0) throw b; +#else +#define DICT_CHECK(a, b) +#endif + +const int CHAINS = 256; + +// +-------------------------------------------------------------------+ + +template Dictionary::Dictionary() + : items(0) +{ init(); } + +template Dictionary::~Dictionary() +{ clear(); } + +// +-------------------------------------------------------------------+ + +template +void Dictionary::init() +{ + items = 0; + memset(table, 0, CHAINS*sizeof(PTR)); +} + +template +void Dictionary::clear() +{ + for (int i = 0; i < CHAINS; i++) { + DictionaryCell* link = table[i]; + + while (link) { + DictionaryCell* n = link->next; + delete link; + link = n; + } + } + + init(); +} + +// +-------------------------------------------------------------------+ + +template +T& Dictionary::operator[](const Text& key) +{ + int idx = key.hash() % CHAINS; + DictionaryCell* cell = table[idx]; + + if (cell == 0) { // empty chain + items++; + cell = new DictionaryCell(key); + table[idx] = cell; + return cell->value; + } + else { // search for key + while (cell->next && cell->key != key) + cell = cell->next; + + if (cell->key != key) { // not found in chain + items++; + cell->next = new DictionaryCell(key); + return cell->next->value; + } + else { // found: return it! + return cell->value; + } + } +} + +// +-------------------------------------------------------------------+ + +template +void Dictionary::insert(const Text& key, const T& val) +{ + T& value = operator[](key); + value = val; +} + +// +-------------------------------------------------------------------+ + +template +void Dictionary::remove(const Text& key) +{ + int idx = key.hash() % CHAINS; + DictionaryCell* cell = table[idx]; + + if (cell == 0) { // empty chain + return; + } + else { // search for key + while (cell->next && cell->key != key) + cell = cell->next; + + if (cell->key != key) { // not found in chain + return; + } + else { // found: remove it! + if (table[idx] == cell) { + table[idx] = cell->next; + delete cell; + } + else { + DictionaryCell* p = table[idx]; + while (p->next != cell) + p = p->next; + p->next = cell->next; + delete cell; + } + } + } +} + +// +-------------------------------------------------------------------+ + +template +int Dictionary::contains(const Text& key) const +{ + int idx = key.hash() % CHAINS; + DictionaryCell* cell = table[idx]; + + if (cell != 0) { + while (cell->next && cell->key != key) + cell = cell->next; + + if (cell->key == key) + return 1; + } + + return 0; +} + +// +-------------------------------------------------------------------+ + +template +T Dictionary::find(const Text& key, T defval) const +{ + int idx = key.hash() % CHAINS; + DictionaryCell* cell = table[idx]; + + if (cell != 0) { + while (cell->next && cell->key != key) + cell = cell->next; + + if (cell->key == key) + return cell->value; + } + + return defval; +} + +// +-------------------------------------------------------------------+ + +template DictionaryIter::DictionaryIter(Dictionary& d) + : dict(&d), chain(0), here(0) +{ } + +template DictionaryIter::~DictionaryIter() +{ } + +// +-------------------------------------------------------------------+ + +template +void DictionaryIter::reset() +{ + chain = 0; + here = 0; +} + +// +-------------------------------------------------------------------+ + +template +Text DictionaryIter::key() const +{ + return here->key; +} + +template +T DictionaryIter::value() const +{ + return here->value; +} + +// +-------------------------------------------------------------------+ + +template +int DictionaryIter::operator++() +{ + forth(); + int more = chain < CHAINS; + return more; +} + +// +-------------------------------------------------------------------+ + +template +void DictionaryIter::forth() +{ + if (here) { + here = here->next; + if (!here) // off the end of this chain + chain++; + } + + if (!here) { + while (!dict->table[chain] && chain < CHAINS) + chain++; + + if (chain < CHAINS) + here = dict->table[chain]; + else + here = 0; + } +} + +// +-------------------------------------------------------------------+ + +template +void DictionaryIter::attach(Dictionary& d) +{ + dict = &d; + reset(); +} + +// +-------------------------------------------------------------------+ + +template +Dictionary& DictionaryIter::container() +{ + return *dict; +} + -- cgit v1.1