LatticeHolder Class Reference

#include <kaldi-lattice.h>

Collaboration diagram for LatticeHolder:

Public Types
typedef Lattice	T

Public Member Functions
	LatticeHolder ()
bool	Read (std::istream &is)
T &	Value ()
void	Clear ()
void	Swap (LatticeHolder *other)
bool	ExtractRange (const LatticeHolder &other, const std::string &range)
	~LatticeHolder ()

Static Public Member Functions
static bool	Write (std::ostream &os, bool binary, const T &t)
static bool	IsReadInBinary ()

Private Attributes
T *	t_

Detailed Description

Definition at line 107 of file kaldi-lattice.h.

Member Typedef Documentation

T

typedef Lattice T

Definition at line 109 of file kaldi-lattice.h.

Constructor & Destructor Documentation

LatticeHolder()

LatticeHolder ( )

inline

Definition at line 111 of file kaldi-lattice.h.

References CompactLatticeHolder::t_.

{ t_ = NULL; }

~LatticeHolder()

~LatticeHolder ( )

inline

Definition at line 140 of file kaldi-lattice.h.

References CompactLatticeHolder::Clear().

{ Clear(); }

Member Function Documentation

Clear()

void Clear ( )

inline

Definition at line 129 of file kaldi-lattice.h.

References CompactLatticeHolder::t_.

{  delete t_; t_ = NULL; }

ExtractRange()

bool ExtractRange ( const LatticeHolder &  other, const std::string &  range  )

inline

Definition at line 135 of file kaldi-lattice.h.

References KALDI_ERR.

                                                                        {
    KALDI_ERR << "ExtractRange is not defined for this type of holder.";
    return false;
  }

IsReadInBinary()

static bool IsReadInBinary ( )

inlinestatic

Definition at line 122 of file kaldi-lattice.h.

{ return true; }

Read()

bool Read

(

std::istream &

is

)

Definition at line 482 of file kaldi-lattice.cc.

References KALDI_WARN, and kaldi::ReadLattice().

                                       {
  Clear(); // in case anything currently stored.
  int c = is.peek();
  if (c == -1) {
    KALDI_WARN << "End of stream detected reading Lattice.";
    return false;
  } else if (isspace(c)) { // The text form of the lattice begins
    // with space (normally, '\n'), so this means it's text (the binary form
    // cannot begin with space because it starts with the FST Type() which is not
    // space).
    return ReadLattice(is, false, &t_);
  } else if (c != 214) { // 214 is first char of FST magic number,
    // on little-endian machines which is all we support (\326 octal)
    KALDI_WARN << "Reading compact lattice: does not appear to be an FST "
               << " [non-space but no magic number detected], file pos is "
               << is.tellg();
    return false;
  } else {
    return ReadLattice(is, true, &t_);
  }
}

Swap()

void Swap ( LatticeHolder *  other )

inline

Definition at line 131 of file kaldi-lattice.h.

References kaldi::swap(), CompactLatticeHolder::t_, and LatticeHolder::t_.

                                  {
    std::swap(t_, other->t_);
  }

Value()

T& Value ( )

inline

Definition at line 124 of file kaldi-lattice.h.

References KALDI_ASSERT, and CompactLatticeHolder::t_.

             {
    KALDI_ASSERT(t_ != NULL && "Called Value() on empty LatticeHolder");
    return *t_;
  }

Write()

static bool Write ( std::ostream &  os, bool  binary, const T &  t  )

inlinestatic

Definition at line 113 of file kaldi-lattice.h.

References CompactLatticeHolder::Read(), and kaldi::WriteLattice().

                                                             {
    // Note: we don't include the binary-mode header when writing
    // this object to disk; this ensures that if we write to single
    // files, the result can be read by OpenFst.
    return WriteLattice(os, binary, t);
  }

Member Data Documentation

t_

T* t_

private

Definition at line 142 of file kaldi-lattice.h.

Referenced by LatticeHolder::Swap().

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The documentation for this class was generated from the following files:

• lat/kaldi-lattice.h
• lat/kaldi-lattice.cc