mirror of https://github.com/dnomd343/klotski.git
Dnomd343
2 years ago
8 changed files with 247 additions and 202 deletions
@ -1,67 +1,174 @@ |
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#include <algorithm> |
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#include "common.h" |
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#include "short_code.h" |
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#include "basic_ranges.h" |
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#include "short_code_mark.h" |
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//#include "short_code_mark.h"
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CommonCode ShortCode::to_common_code() const { // convert to common code
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if (ShortCode::check_mode() == ShortCode::NORMAL) { |
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return CommonCode::unsafe_create(tiny_decode(code)); // using normal mode
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return CommonCode::unsafe_create(tiny_decode(code)); // normal mode
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} |
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return CommonCode::unsafe_create(all_cases_list[code]); // using fast mode
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return CommonCode::unsafe_create(fast_decode(code)); // fast mode
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} |
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ShortCode::ShortCode(const CommonCode &common_code) { // convert from common code
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if (ShortCode::check_mode() == ShortCode::NORMAL) { |
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code = tiny_encode(common_code.unwrap()); // using normal mode
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code = tiny_encode(common_code.unwrap()); // normal mode
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} else { |
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code = all_cases_dict[common_code.unwrap()]; // using fast mode
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code = fast_encode(common_code.unwrap()); // fast mode
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} |
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} |
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/// ensure that input common code is valid
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uint32_t ShortCode::tiny_encode(uint64_t common_code) { // common_code --low-memory--> short_code
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uint32_t offset = 0; |
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uint32_t head = common_code >> 32; // common code head
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uint32_t prefix = (common_code >> 24) & 0xFF; // common code range prefix
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auto target = Common::range_reverse((uint32_t)common_code); // target range
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#include "all_cases.h" |
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#include "all_cases_offset.h" |
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#include "basic_ranges_offset.h" |
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#include "range_prefix_offset.h" |
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for (int index = 0; index < BASIC_RANGES_INDEX[prefix]; ++index) { // traverse basic ranges
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uint32_t range = BasicRanges::fetch()[index + BASIC_RANGES_OFFSET[prefix]]; |
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if (range == target) { |
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break; // found target range
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} |
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if (Common::check_case(head, range)) { // search for valid cases
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++offset; // record sub offset
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} |
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} |
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return ALL_CASES_OFFSET[head] + RANGE_PREFIX_OFFSET[head][prefix] + offset; |
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uint64_t ShortCode::fast_decode(uint32_t short_code) { // short code => common code
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auto offset = std::upper_bound( // using binary search
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ALL_CASES_OFFSET, ALL_CASES_OFFSET + 16, short_code |
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) - 1; |
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uint64_t head = offset - ALL_CASES_OFFSET; // head index
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return (head << 32) | AllCases::fetch()[head][short_code - *offset]; // release common code
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} |
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uint32_t ShortCode::fast_encode(uint64_t common_code) { // common code => short code
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auto head = common_code >> 32; // head index
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const auto &ranges = AllCases::fetch()[head]; // available ranges
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auto offset = std::lower_bound(ranges.begin(), ranges.end(), (uint32_t)common_code) - ranges.begin(); |
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return ALL_CASES_OFFSET[head] + offset; // release short code
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} |
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/// ensure that input common code is valid
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//uint32_t ShortCode::tiny_encode(uint64_t common_code) { // common_code --low-memory--> short_code
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// uint32_t offset = 0;
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// uint32_t head = common_code >> 32; // common code head
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// uint32_t prefix = (common_code >> 24) & 0xFF; // common code range prefix
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// auto target = Common::range_reverse((uint32_t)common_code); // target range
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//
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// for (int index = 0; index < BASIC_RANGES_INDEX[prefix]; ++index) { // traverse basic ranges
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// uint32_t range = BasicRanges::fetch()[index + BASIC_RANGES_OFFSET[prefix]];
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// if (range == target) {
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// break; // found target range
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// }
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// if (Common::check_case(head, range)) { // search for valid cases
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// ++offset; // record sub offset
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// }
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// }
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// return ALL_CASES_OFFSET[head] + RANGE_PREFIX_OFFSET[head][prefix] + offset;
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//}
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/// ensure that input short code is valid
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uint64_t ShortCode::tiny_decode(uint32_t short_code) { // short_code --low-memory--> common_code
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uint32_t head = 0, prefix = 0; |
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for (; head < 16; ++head) { |
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if (short_code < ALL_CASES_INDEX[head]) { // match head
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break; |
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} |
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short_code -= ALL_CASES_INDEX[head]; // short code approximate
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//uint64_t ShortCode::tiny_decode(uint32_t short_code) { // short_code --low-memory--> common_code
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// uint32_t head = 0, prefix = 0;
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// for (; head < 16; ++head) {
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// if (short_code < ALL_CASES_INDEX[head]) { // match head
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// break;
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// }
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// short_code -= ALL_CASES_INDEX[head]; // short code approximate
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// }
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// for (; prefix < 256; ++prefix) {
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// if (short_code < RANGE_PREFIX_INDEX[head][prefix]) { // match range prefix
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// break;
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// }
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// short_code -= RANGE_PREFIX_INDEX[head][prefix]; // short code approximate
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// }
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//
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// uint32_t range;
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// for (int index = 0; index < BASIC_RANGES_INDEX[prefix]; ++index) { // traverse basic ranges
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// range = BasicRanges::fetch()[index + BASIC_RANGES_OFFSET[prefix]];
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// if (Common::check_case(head, range)) { // search for valid cases
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// if (short_code == 0) {
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// break; // found target range
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// }
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// --short_code; // short code approximate
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// }
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// }
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// return (uint64_t)head << 32 | Common::range_reverse(range); // release common code
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//}
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// TODO: try to using 10-bits range prefix -> less static data
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uint64_t ShortCode::tiny_decode(uint32_t short_code) { |
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/// match head index
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auto offset = std::upper_bound( // binary search
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ALL_CASES_OFFSET, ALL_CASES_OFFSET + 16, short_code |
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) - 1; |
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uint64_t head = offset - ALL_CASES_OFFSET; // head index
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short_code -= *offset; |
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/// match range prefix
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offset = std::upper_bound( // binary search
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RANGE_PREFIX_OFFSET[head], RANGE_PREFIX_OFFSET[head] + 4096, short_code |
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) - 1; |
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uint32_t prefix = offset - RANGE_PREFIX_OFFSET[head]; // range prefix
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short_code -= *offset; |
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/// search target range
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const auto &basic_ranges = BasicRanges::fetch(); |
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for (auto index = BASIC_RANGES_OFFSET[prefix]; index < basic_ranges.size(); ++index) { |
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uint32_t range = basic_ranges[index]; // traverse basic ranges
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uint32_t broken = Common::check_range(head, basic_ranges[index]); // check and get broken address
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auto range_rev = Common::range_reverse(basic_ranges[index]); // reversed range
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if (broken) { // invalid case
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auto delta = (uint32_t)1 << (32 - broken * 2); // this --delta--> next possible range
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auto next_min = (range_rev & ~(delta - 1)) + delta; |
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while (Common::range_reverse(basic_ranges[++index]) < next_min); // located next range
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--index; |
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} else { |
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if (!short_code--) { // short code approximate
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/// found target range
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return head << 32 | range_rev; |
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} |
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for (; prefix < 256; ++prefix) { |
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if (short_code < RANGE_PREFIX_INDEX[head][prefix]) { // match range prefix
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break; |
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} |
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short_code -= RANGE_PREFIX_INDEX[head][prefix]; // short code approximate
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} |
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uint32_t range; |
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for (int index = 0; index < BASIC_RANGES_INDEX[prefix]; ++index) { // traverse basic ranges
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range = BasicRanges::fetch()[index + BASIC_RANGES_OFFSET[prefix]]; |
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return 0; // never reach when input valid
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} |
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uint32_t ShortCode::tiny_encode(uint64_t common_code) { |
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// printf("%09lX\n", common_code);
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uint32_t head = common_code >> 32; |
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uint32_t prefix = (common_code >> 20) & 0xFFF; |
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// printf("head = %d\n", head);
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// printf("prefix = %X\n", prefix);
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uint32_t offset = 0; |
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auto target = Common::range_reverse((uint32_t)common_code); // target range
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const auto &basic_ranges = BasicRanges::fetch(); |
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for (auto index = BASIC_RANGES_OFFSET[prefix]; index < basic_ranges.size(); ++index) { // traverse basic ranges
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uint32_t range = basic_ranges[index]; |
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if (Common::check_case(head, range)) { // search for valid cases
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if (short_code == 0) { |
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break; // found target range
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if (range == target) { // found target range
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return ALL_CASES_OFFSET[head] + RANGE_PREFIX_OFFSET[head][prefix] + offset; |
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} |
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--short_code; // short code approximate
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++offset; // record sub offset
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} |
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} |
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return (uint64_t)head << 32 | Common::range_reverse(range); // release common code
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return 0; |
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} |
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