tools/miniswig/lexer.ll

   1 %{
   2 #include <math.h>
   3 #include <stdlib.h>
   4 #include "tree.h"
   5 #include "parser.hpp"
   6 #include "globals.h"
   7
   8 #define YY_DECL int yylex YY_PROTO(( YYSTYPE* yylval ))
   9
  10 #define YY_INPUT(buf, result, max_size)                     \
  11 {                                                           \
  12     input->read(buf, max_size);                             \
  13     result = input->gcount();                               \
  14 }
  15
  16 %}
  17
  18 %option noyywrap
  19 %option yylineno
  20 /* %option never-interactive */
  21
  22 %%
  23
  24 [[:space:]]+                            /* eat spaces */
  25 \/\*.*\*\/                              /* eat comment */
  26 \/\/[^\n]*\n                            /* eat comment */
  27 class                                   { return T_CLASS; }
  28 struct                                  { return T_STRUCT; }
  29 static                                  { return T_STATIC; }
  30 const                                   { return T_CONST; }
  31 unsigned                                { return T_UNSIGNED; }
  32 signed                                  { return T_SIGNED; }
  33 void                                    { return T_VOID; }
  34 bool                                    { return T_BOOL; }
  35 char                                    { return T_CHAR; }
  36 short                                   { return T_SHORT; }
  37 int                                     { return T_INT; }
  38 long                                    { return T_LONG; }
  39 float                                   { return T_FLOAT; }
  40 double                                  { return T_DOUBLE; }
  41 public                                  { return T_PUBLIC; }
  42 protected                               { return T_PROTECTED; }
  43 private                                 { return T_PRIVATE; }
  44 [a-zA-Z_][a-zA-Z_0-9]*                  {
  45         // is it a type?
  46         for(std::vector<AtomicType*>::iterator i = unit->types.begin();
  47                 i != unit->types.end(); ++i) {
  48             AtomicType* type = *i;
  49             if(type->name == yytext) {
  50                 yylval->atomic_type = type;
  51                 return T_ATOMIC_TYPE;
  52             }
  53         }
  54         // or a namespace? (hack for now...)
  55         if(strcmp(yytext, "std") == 0) {
  56             yylval->_namespace = unit->namespaces[0];
  57             return T_NAMESPACE;
  58         }
  59         yylval->str = strdup(yytext);
  60         return T_ID;
  61 }
  62 \:\:                                    { return T_DDCOL; }
  63 [0-9]+                                  {
  64                                             yylval->ival = atoi(yytext);
  65                                             return T_INT;
  66                                         }
  67 [0-9]*\.[0-9]+(e[0-9]+)?                {
  68                                             yylval->fval = atof(yytext);
  69                                             return T_FLOAT;
  70                                         }
  71 \".*\"                                  {
  72                                             yylval->str = strdup(yytext);
  73                                             return T_STRING;
  74                                         }
  75 .                                       { return yytext[0]; }
  76
  77 %%
  78