commands/flex-2.5.4/MISC/fastwc/wc3.l

   1 /* Somewhat faster still: potentially match a lot of text with each rule */
   2
   3 ws    [ \t]
   4 nonws [^ \t\n]
   5 word  {ws}*{nonws}+
   6 words {word}{ws}+
   7
   8 %%
   9         int cc = 0, wc = 0, lc = 0;
  10
  11 {word}{ws}*             cc += yyleng; ++wc;
  12 {word}{ws}*\n           cc += yyleng; ++wc; ++lc;
  13 {words}{word}{ws}*      cc += yyleng; wc += 2;
  14 {words}{2}{word}{ws}*   cc += yyleng; wc += 3;
  15 {words}{3}{word}{ws}*   cc += yyleng; wc += 4;
  16
  17 {ws}+                   cc += yyleng;
  18
  19 \n+                     cc += yyleng; lc += yyleng;
  20
  21 <<EOF>>         {
  22                 printf( "%8d %8d %8d\n", lc, wc, cc );
  23                 yyterminate();
  24                 }