/usr/include/hfst/HarmonizeUnknownAndIdentitySymbols.h is in libhfst42-dev 3.9.0~r4595-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#ifndef HARMONIZE_UNKNOWN_AND_IDENTITY_SYMBOLS
#define HARMONIZE_UNKNOWN_AND_IDENTITY_SYMBOLS
// ---
/* A more generalized class that takes an template <class C, class W>
HfstTransitionGraph as its constructor arguments. The functions could
take a HfstTransitionGraph::HfstTransitionGraphAlphabet as their
arguments and use functions C::get_unknown() etc.
*/
#include <set>
#include <string>
#include <iostream> // --- in the cc-file instead?
#include <algorithm> // --- "" ---
#include <cassert> // --- "" ---
#include "HfstDataTypes.h"
#include "HfstSymbolDefs.h"
namespace hfst
{
using implementations::HfstBasicTransducer;
using implementations::HfstBasicTransition;
#ifdef TEST_HARMONIZE_UNKNOWN_AND_IDENTITY_SYMBOLS
#define debug_harmonize 1
#else
#define debug_harmonize 0
#endif // TEST_HARMONIZE_UNKNOWN_AND_IDENTITY_SYMBOLS
#include "hfstdll.h"
// --- a short documentation
class HarmonizeUnknownAndIdentitySymbols
{
// --- HfstSymbolDefs.h has members const std::string internal_identity
// and internal_unknown
public:
// --- const std::string instead
static const char * identity; // --- a short documentation
static const char * unknown; // --- "" ---
// Constructor whose side effect it is to harmonize the identity and unknown
// symbols of its arguments.
HFSTDLL HarmonizeUnknownAndIdentitySymbols
(HfstBasicTransducer &,HfstBasicTransducer &);
protected:
HfstBasicTransducer &t1;
HfstBasicTransducer &t2;
StringSet t1_symbol_set; // --- symbols known to t1?
StringSet t2_symbol_set; // --- symbols known to t2?
// Collect the symbols from the transitions of the argument transducer
// and store them in the argument set. This is needed since the alphabet
// of HfstBasicTransducers can sometimes unexplainedly be empty...
// --- the alphabet can contain also symbols that are not found in
// transitions...
HFSTDLL void populate_symbol_set(const HfstBasicTransducer &,StringSet &);
// Add all symbols in the StringSet to the alphabet of the transducer.
HFSTDLL void add_symbols_to_alphabet(HfstBasicTransducer &, const StringSet &);
// For every x in the set, add x:x transitions for every identity:identity
// transition in the argument transducer (the source and target states as
// well as the weights are the same as in the original identity transition.
HFSTDLL void harmonize_identity_symbols
(HfstBasicTransducer &,const StringSet &);
// For every x in the set
// 1. add, x:c transitions for every unknown:c transition in the argument
// transducer.
// 2. add, c:x transitions for every c:unknown transition in the argument
// transducer.
//
// For every x and y in the set with x != y, add x:y transitions for every
// unknown:unknown transition in the argument transducer.
//
// (the source and target states as well as the weights are the same as in
// the original identity transition)
HFSTDLL void harmonize_unknown_symbols
(HfstBasicTransducer &,const StringSet &);
};
HFSTDLL void debug_harmonize_print(const StringSet &);
HFSTDLL void debug_harmonize_print(const std::string &);
// use name 'max_' to avoid collision with windows macro 'max'
HFSTDLL size_t max_(size_t t1,size_t t2); // --- a short documentation
}
#endif // HARMONIZE_UNKNOWN_AND_IDENTITY_SYMBOLS --- good
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