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authorVictor Chahuneau <vchahune@cs.cmu.edu>2013-08-26 20:12:32 -0400
committerVictor Chahuneau <vchahune@cs.cmu.edu>2013-08-26 20:12:32 -0400
commit03799a2d330c6dbbe12154d4bcea236210b4f6ed (patch)
tree7adb0bc8dd2987fa32ee1299d8821dd8b7b06706 /python/src/sa/strmap.cc
parent8b491e57f8a011f4f8496e44bed7eb7a4360bc93 (diff)
Improve the package structure of pycdec
This change should not break anything, but now you can run: python setup.py build_ext --inplace and use the cleaner: PYTHONPATH=/path/to/cdec/python python -m ...
Diffstat (limited to 'python/src/sa/strmap.cc')
-rw-r--r--python/src/sa/strmap.cc232
1 files changed, 0 insertions, 232 deletions
diff --git a/python/src/sa/strmap.cc b/python/src/sa/strmap.cc
deleted file mode 100644
index 5040477e..00000000
--- a/python/src/sa/strmap.cc
+++ /dev/null
@@ -1,232 +0,0 @@
-#include "strmap.h"
-
-#include <vector>
-#include <string>
-#include <tr1/unordered_map>
-#include <stdint.h>
-
-using namespace std;
-using namespace std::tr1;
-
-#undef HAVE_64_BITS
-
-#if INTPTR_MAX == INT32_MAX
-# define HAVE_64_BITS 0
-#elif INTPTR_MAX >= INT64_MAX
-# define HAVE_64_BITS 1
-#else
-# error "couldn't tell if HAVE_64_BITS from INTPTR_MAX INT32_MAX INT64_MAX"
-#endif
-
-typedef uintptr_t MurmurInt;
-
-// MurmurHash2, by Austin Appleby
-
-static const uint32_t DEFAULT_SEED=2654435769U;
-
-#if HAVE_64_BITS
-//MurmurInt MurmurHash(void const *key, int len, uint32_t seed=DEFAULT_SEED);
-
-inline uint64_t MurmurHash64( const void * key, int len, unsigned int seed=DEFAULT_SEED )
-{
- const uint64_t m = 0xc6a4a7935bd1e995ULL;
- const int r = 47;
-
- uint64_t h = seed ^ (len * m);
-
- const uint64_t * data = (const uint64_t *)key;
- const uint64_t * end = data + (len/8);
-
- while(data != end)
- {
- uint64_t k = *data++;
-
- k *= m;
- k ^= k >> r;
- k *= m;
-
- h ^= k;
- h *= m;
- }
-
- const unsigned char * data2 = (const unsigned char*)data;
-
- switch(len & 7)
- {
- case 7: h ^= uint64_t(data2[6]) << 48;
- case 6: h ^= uint64_t(data2[5]) << 40;
- case 5: h ^= uint64_t(data2[4]) << 32;
- case 4: h ^= uint64_t(data2[3]) << 24;
- case 3: h ^= uint64_t(data2[2]) << 16;
- case 2: h ^= uint64_t(data2[1]) << 8;
- case 1: h ^= uint64_t(data2[0]);
- h *= m;
- };
-
- h ^= h >> r;
- h *= m;
- h ^= h >> r;
-
- return h;
-}
-
-inline uint32_t MurmurHash32(void const *key, int len, uint32_t seed=DEFAULT_SEED)
-{
- return (uint32_t) MurmurHash64(key,len,seed);
-}
-
-inline MurmurInt MurmurHash(void const *key, int len, uint32_t seed=DEFAULT_SEED)
-{
- return MurmurHash64(key,len,seed);
-}
-
-#else
-// 32-bit
-
-// Note - This code makes a few assumptions about how your machine behaves -
-// 1. We can read a 4-byte value from any address without crashing
-// 2. sizeof(int) == 4
-inline uint32_t MurmurHash32 ( const void * key, int len, uint32_t seed=DEFAULT_SEED)
-{
- // 'm' and 'r' are mixing constants generated offline.
- // They're not really 'magic', they just happen to work well.
-
- const uint32_t m = 0x5bd1e995;
- const int r = 24;
-
- // Initialize the hash to a 'random' value
-
- uint32_t h = seed ^ len;
-
- // Mix 4 bytes at a time into the hash
-
- const unsigned char * data = (const unsigned char *)key;
-
- while(len >= 4)
- {
- uint32_t k = *(uint32_t *)data;
-
- k *= m;
- k ^= k >> r;
- k *= m;
-
- h *= m;
- h ^= k;
-
- data += 4;
- len -= 4;
- }
-
- // Handle the last few bytes of the input array
-
- switch(len)
- {
- case 3: h ^= data[2] << 16;
- case 2: h ^= data[1] << 8;
- case 1: h ^= data[0];
- h *= m;
- };
-
- // Do a few final mixes of the hash to ensure the last few
- // bytes are well-incorporated.
-
- h ^= h >> 13;
- h *= m;
- h ^= h >> 15;
-
- return h;
-}
-
-inline MurmurInt MurmurHash ( const void * key, int len, uint32_t seed=DEFAULT_SEED) {
- return MurmurHash32(key,len,seed);
-}
-
-// 64-bit hash for 32-bit platforms
-
-inline uint64_t MurmurHash64 ( const void * key, int len, uint32_t seed=DEFAULT_SEED)
-{
- const uint32_t m = 0x5bd1e995;
- const int r = 24;
-
- uint32_t h1 = seed ^ len;
- uint32_t h2 = 0;
-
- const uint32_t * data = (const uint32_t *)key;
-
- while(len >= 8)
- {
- uint32_t k1 = *data++;
- k1 *= m; k1 ^= k1 >> r; k1 *= m;
- h1 *= m; h1 ^= k1;
- len -= 4;
-
- uint32_t k2 = *data++;
- k2 *= m; k2 ^= k2 >> r; k2 *= m;
- h2 *= m; h2 ^= k2;
- len -= 4;
- }
-
- if(len >= 4)
- {
- uint32_t k1 = *data++;
- k1 *= m; k1 ^= k1 >> r; k1 *= m;
- h1 *= m; h1 ^= k1;
- len -= 4;
- }
-
- switch(len)
- {
- case 3: h2 ^= ((unsigned char*)data)[2] << 16;
- case 2: h2 ^= ((unsigned char*)data)[1] << 8;
- case 1: h2 ^= ((unsigned char*)data)[0];
- h2 *= m;
- };
-
- h1 ^= h2 >> 18; h1 *= m;
- h2 ^= h1 >> 22; h2 *= m;
- h1 ^= h2 >> 17; h1 *= m;
- h2 ^= h1 >> 19; h2 *= m;
-
- uint64_t h = h1;
-
- h = (h << 32) | h2;
-
- return h;
-}
-
-#endif
-//32bit
-
-struct MurmurHasher {
- size_t operator()(const string& s) const {
- return MurmurHash(s.c_str(), s.size());
- }
-};
-
-struct StrMap {
- StrMap() { keys_.reserve(10000); keys_.push_back("<bad0>"); map_[keys_[0]] = 0; }
- unordered_map<string, int, MurmurHasher> map_;
- vector<string> keys_;
-};
-
-StrMap* stringmap_new() {
- return new StrMap;
-}
-
-void stringmap_delete(StrMap *vocab) {
- delete vocab;
-}
-
-int stringmap_index(StrMap *vocab, char *s) {
- int& cell = vocab->map_[s];
- if (!cell) {
- cell = vocab->keys_.size();
- vocab->keys_.push_back(s);
- }
- return cell;
-}
-
-char* stringmap_word(StrMap *vocab, int i) {
- return const_cast<char *>(vocab->keys_[i].c_str());
-}
-