lambda.l

   1 %option noinput
   2 %option nounput
   3 %{
   4
   5 #include "lambda.h"
   6 #include "lambda.tab.h"
   7
   8 %}
   9
  10 %%
  11
  12 [ \t\n]
  13 =         return ASSIGN;
  14 ;         return SEMICOLON;
  15 (\\|λ)    return LAMBDA;
  16 \.        return DOT;
  17 \(        return OBRACE;
  18 \)        return CBRACE;
  19 \!        return BANG;
  20 true      yylval = make_bool(true); return LITERAL;
  21 false     yylval = make_bool(false); return LITERAL;
  22 [0-9]+    yylval = make_numeral(atoi(yytext)); return LITERAL;
  23 [a-z]+    yylval = make_ident(yytext); return IDENT;
  24 [A-Z]+    yylval = make_ident(yytext); return FUNC;
  25
  26 %%