// ==========================================================================
// Implementation for maskable words.
// A. Fischer, June 4, 2000                                   file: words.cpp
// Modified by M. Fischer, October 8, 2009
//===========================================================================b
#include "tools.hpp"
#include "words.hpp"
// ================================================= Alphabet class functions
int                             // Return index of first occurrence of c in W
Alphabet::find(char c) const {
    int k;
    for (k=0; k<len && c != w[k]; k++);     // Loop body is empty.
    return (k==len) ? -1 : k;
}
//---------------------------------------------------------------------------
// Print word omitting masked-out letters; separate printed letters with spaces.
ostream&
Alphabet::print (ostream& out) const {
    for (int k=0; k < len; k++)  if ( mask[k] ) out << " " << w[k];
    return out;
}

// ================================================= Hangword class functions
int       // Count the number of times letter c occurs in puzzle; unmask each
HangWord::try_letter(char c) const {
    int count = 0;
    for (int k=0; k<len; k++) {
        if (c == w[k]) {
            count++;
            mask[k] = true;
        }
    }
    return count;
}
//---------------------------------------------------------------------------
// Print word with '_' replacing masked-out letters; no letter separators.
ostream&
HangWord::print (ostream& out) const {
    out << "<[" ;
    for (int k=0; k < len; k++) out  << ' ' << (mask[k] ? w[k] : '_') ;
    out << " ]>";
    return out;
}