[c333ed2] | 1 | #include "enum.hfa" |
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[85855b0] | 2 | #include "fstream.hfa" |
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[6d2b3dc] | 3 | #include <string.h> |
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[c333ed2] | 4 | |
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[03ac869] | 5 | #pragma GCC visibility push(default) |
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| 6 | |
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[0c327ce] | 7 | forall( E | Serial( E ) ) { |
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| 8 | E fromInt( unsigned i ) { |
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| 9 | E upper = upperBound(); |
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| 10 | E lower = lowerBound(); |
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| 11 | // It is okay to overflow as overflow will be theoretically caught by the other bound |
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[2e6b2a0] | 12 | if ( i < fromInstance( lower ) || i > fromInstance( upper ) ) |
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| 13 | abort( "call to fromInt has index %d outside enumeration range %d-%d", |
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| 14 | i, fromInstance( lower ), fromInstance( upper ) ); |
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[0c327ce] | 15 | return fromInt_unsafe( i ); |
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| 16 | } |
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| 17 | |
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| 18 | E succ( E e ) { |
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| 19 | E upper = upperBound(); |
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[2e6b2a0] | 20 | if ( fromInstance( e ) >= fromInstance( upper ) ) |
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| 21 | abort( "call to succ() exceeds enumeration upper bound of %d", fromInstance( upper ) ); |
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[0c327ce] | 22 | return succ_unsafe(e); |
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| 23 | } |
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| 24 | |
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| 25 | E pred( E e ) { |
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| 26 | E lower = lowerBound(); |
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[2e6b2a0] | 27 | if ( fromInstance(e) <= fromInstance(lower ) ) |
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| 28 | abort( "call to pred() exceeds enumeration lower bound of %d", fromInstance( lower ) ); |
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[0c327ce] | 29 | return pred_unsafe(e); |
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| 30 | } |
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| 31 | |
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| 32 | int Countof( __attribute__((unused)) E e ) { |
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| 33 | E upper = upperBound(); |
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| 34 | E lower = lowerBound(); |
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| 35 | return fromInstance( upper ) + fromInstance( lower ) + 1; |
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| 36 | } |
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| 37 | } |
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| 38 | |
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[236f133] | 39 | forall( istype & | istream( istype ), E | CfaEnum( E ) ) |
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[64eeb06] | 40 | istype & ?|?( istype & is, E & e ) { |
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[2e6b2a0] | 41 | // fprintf( stderr, "here0\n" ); |
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[64eeb06] | 42 | if ( eof( is ) ) throwResume ExceptionInst( missing_data ); |
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[d287f3e] | 43 | |
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| 44 | // Match input enumerator string to enumerator labels. |
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[2e6b2a0] | 45 | int N = Countof( e ), lnths[N], max = 0; |
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| 46 | // printf( "N %d\n", N ); |
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| 47 | // for ( s; E : i; 0~@ ) { |
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[d287f3e] | 48 | int i = 0; |
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| 49 | for ( s; E ) { |
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[2e6b2a0] | 50 | lnths[i] = strlen( label( s ) ); |
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| 51 | if ( lnths[i] > max ) max = lnths[i]; |
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| 52 | // fprintf( stderr, "%s %d %d\n", label( s ), lnths[i], max ); |
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[d287f3e] | 53 | i += 1; |
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[6d2b3dc] | 54 | } // for |
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[d287f3e] | 55 | |
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[2e6b2a0] | 56 | int win = -1; |
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| 57 | char ch, curr = '\0', prev = '\0'; |
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| 58 | |
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| 59 | fmt( is, " " ); // skip optional whitespace |
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| 60 | for ( c; max ) { |
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| 61 | int args = fmt( is, "%c", &ch ); // read character |
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| 62 | if ( eof( is ) ) { |
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| 63 | // fprintf( stderr, "Eof1\n" ); |
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| 64 | if ( c == 0 ) return is; // no characters read ? |
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| 65 | clear( is ); // => reset EOF => detect again on next read |
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| 66 | // fprintf( stderr, "Eof2\n" ); |
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| 67 | goto W; |
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| 68 | } |
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| 69 | if ( args != 1 ) throwResume ExceptionInst( missing_data ); |
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| 70 | // printf( "read '%c'\n", ch ); |
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| 71 | for ( i; N ) { |
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| 72 | // printf( "%d %d %d\n", c, i, lnths[i] ); |
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| 73 | if ( c < lnths[i] ) { // eligible for this checking round ? |
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| 74 | char match = label( fromInt( i ) )[c]; // optimization |
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| 75 | // printf( "%c '%c'\n", match, ch ); |
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| 76 | if ( (match == ch) && (c == 0 || curr == label( fromInt( i ) )[c - 1]) ) { |
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| 77 | // printf( "match %d %d %d '%c' '%c' '%c' '%c' 'c'\n", c, i, lnths[i], match, ch, prev, label( fromInt( i ) )[c - 1] ); |
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| 78 | win = c; |
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| 79 | prev = curr; |
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| 80 | curr = ch; |
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| 81 | break; |
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| 82 | } // if |
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| 83 | } // if |
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| 84 | } else { |
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| 85 | // fprintf( stderr, "finished win: %d ch: '%c' curr: '%c' prev: '%c'\n", win, ch, curr, prev ); |
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| 86 | ungetc( ch, is ); |
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| 87 | if ( win == -1 ) throwResume ExceptionInst( missing_data ); |
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| 88 | goto W; // break does not work |
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| 89 | } // for |
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| 90 | // printf( "\n" ); |
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| 91 | // } else { |
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| 92 | // fprintf( stderr, "finished2 %d\n", win ); |
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| 93 | } // for |
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| 94 | W :; |
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| 95 | for ( i; N ) { // scan for winner, must succeed |
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| 96 | if ( win == lnths[i] - 1 ) { |
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| 97 | char match = label( fromInt( i ) )[win]; // optimization |
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| 98 | // printf( "finished1 win: %d i: %d lnth: %d match: '%c' curr: '%c' prev: '%c'\n", win, i, lnths[i], match, curr, prev ); |
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| 99 | if ( (match == curr) && (win == 0 || prev == label( fromInt( i ) )[win - 1]) ) { |
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| 100 | e = fromInt( i ); |
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| 101 | break; |
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| 102 | } |
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| 103 | } // if |
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| 104 | } else { |
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| 105 | // fprintf( stderr, "finished3 %d\n", win ); |
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| 106 | throwResume ExceptionInst( missing_data ); |
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| 107 | } // for |
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[64eeb06] | 108 | return is; |
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| 109 | } |
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| 110 | |
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[236f133] | 111 | forall( ostype & | ostream( ostype ), E | CfaEnum( E ) ) { |
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[64eeb06] | 112 | ostype & ?|?( ostype & os, E e ) { |
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| 113 | return os | label( e ); |
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| 114 | } |
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| 115 | OSTYPE_VOID_IMPL( E ) |
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[259012e] | 116 | } |
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