Changes in / [5aeb1a9:a03ed29]


Ignore:
Files:
3 edited

Legend:

Unmodified
Added
Removed

  • doc/theses/jiada_liang_MMath/CFAenum.tex

    r5aeb1a9 ra03ed29  
    395395
    396396
    397 \section{Enumeration I/O}
    398 
    399 As seen in multiple examples, enumerations can be printed and the default property printed is the enumerator's label, which is similar in other programming languages.
    400 However, very few programming languages provide a mechanism to read in enumerator values.
    401 Even the @boolean@ type in many languages does not have a mechanism for input using the enumerators @true@ or @false@.
    402 \VRef[Figure]{f:EnumerationI/O} show \CFA enumeration input based on the enumerator labels.
    403 When the enumerator labels are packed together in the input stream, the input algorithm scans for the longest matching string.
    404 For basic types in \CFA, the constants use to initialize a variable in a program are available to initialize a variable using input, where strings constants can be quoted or unquoted.
    405 
    406 \begin{figure}
    407 \begin{cquote}
    408 \setlength{\tabcolsep}{15pt}
    409 \begin{tabular}{@{}ll@{}}
    410 \begin{cfa}
    411 int main() {
    412         enum(int ) E { BBB = 3, AAA, AA, AB, B };
    413         E e;
    414 
    415         for () {
    416                 try {
    417                         @sin | e@;
    418                 } catch( missing_data * ) {
    419                         sout | "missing data";
    420                         continue; // try again
    421                 }
    422           if ( eof( sin ) ) break;
    423                 sout | e | "= " | value( e );
    424         }
    425 }
    426 \end{cfa}
    427 &
    428 \begin{cfa}
    429 $\rm input$
    430 BBBABAAAAB
    431 BBB AAA AA AB B
    432 
    433 $\rm output$
    434 BBB = 3
    435 AB = 6
    436 AAA = 4
    437 AB = 6
    438 BBB = 3
    439 AAA = 4
    440 AA = 5
    441 AB = 6
    442 B = 7
    443 
    444 \end{cfa}
    445 \end{tabular}
    446 \end{cquote}
    447 \caption{Enumeration I/O}
    448 \label{f:EnumerationI/O}
    449 \end{figure}
    450 
    451 
    452 
    453397\section{Planet Example}
    454398

  • tests/enum_tests/.expect/input.txt

    r5aeb1a9 ra03ed29  
    1 BBB = 3
    2 AB = 6
    3 AAA = 4
    4 AB = 6
    5 BBB = 3
    6 AAA = 4
    7 AB = 6
    8 AA = 5
    9 B = 7
    10 BBB = 3
    11 AAA = 4
    12 AA = 5
    13 AB = 6
    14 B = 7
    15 BBB = 3
    16 AAA = 4
    17 AA = 5
    18 AB = 6
    19 B = 7
    20 AAA = 4
    21 B = 7
    22 CB = 8
    23 AC = 9
    24 CB = 8
    25 AC = 9
    26 BBB = 3
    27 AAA = 4
    28 AA = 5
     1"BBB"
     2"AB"
     3"AAA"
     4"AB"
     5"BBB"
     6"AAA"
     7"AB"
     8"AA"
     9"B"
     10"BBB"
     11"AAA"
     12"AA"
     13"AB"
     14"B"
     15"BBB"
     16"AAA"
     17"AA"
     18"AB"
     19"B"
     20"AAA"
     21"B"
     22"CB"
     23"AC"
     24"CB"
     25"AC"
     26"BBB"
     27"AAA"
     28"AA"
    2929missing data
    30 AAA = 4
    31 B = 7
    32 CB = 8
    33 AC = 9
    34 CB = 8
    35 AC = 9
    36 BBB = 3
    37 AAA = 4
    38 AA = 5
     30"AAA"
     31"B"
     32"CB"
     33"AC"
     34"CB"
     35"AC"
     36"BBB"
     37"AAA"
     38"AA"
    3939missing data

  • tests/enum_tests/input.cfa

    r5aeb1a9 ra03ed29  
    33
    44int main() {
    5         enum(int ) E { BBB = 3, AAA, AA, AB, B, CB, AC };
     5        enum(int) E { BBB, AAA, AA, AB, B, CB, AC };
    66        E e;
    77
    … …  
    1414                } // try
    1515          if ( eof( sin ) ) break;
    16                 sout | e | "= " | value( e );
     16                sout | "\"" | e | "\"";
    1717        } // for
    1818}
Note: See TracChangeset for help on using the changeset viewer.