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 #.*                                     /* ignore preprocessor directives */
  25 [[:space:]]+                            /* eat spaces */
  26 \/\*.*\*\/                              /* eat comment */
  27 \/\/[^\n]*\n                            /* eat comment */
  28 class                                   { return T_CLASS; }
  29 struct                                  { return T_STRUCT; }
  30 static                                  { return T_STATIC; }
  31 const                                   { return T_CONST; }
  32 unsigned                                { return T_UNSIGNED; }
  33 signed                                  { return T_SIGNED; }
  34 void                                    { return T_VOID; }
  35 bool                                    { return T_BOOL; }
  36 char                                    { return T_CHAR; }
  37 short                                   { return T_SHORT; }
  38 int                                     { return T_INT; }
  39 long                                    { return T_LONG; }
  40 float                                   { return T_FLOAT; }
  41 double                                  { return T_DOUBLE; }
  42 public                                  { return T_PUBLIC; }
  43 protected                               { return T_PROTECTED; }
  44 private                                 { return T_PRIVATE; }
  45 namespace                               { return T_NAMESPACE; }
  46 [a-zA-Z_][a-zA-Z_0-9]*                  {
  47         Namespace* ns = search_namespace;
  48         if(ns == 0)
  49             ns = current_namespace;
  50         // is it a type?
  51         for(std::vector<AtomicType*>::iterator i = ns->types.begin();
  52                 i != ns->types.end(); ++i) {
  53             AtomicType* type = *i;
  54             if(type->name == yytext) {
  55                 yylval->atomic_type = type;
  56                 return T_ATOMIC_TYPE;
  57             }
  58         }
  59         // or a namespace? (hack for now...)
  60         yylval->_namespace = ns->_findNamespace(yytext, search_down);
  61         if(yylval->_namespace) {
  62             return T_NAMESPACEREF;
  63         }
  64         // a new ID
  65         yylval->str = strdup(yytext);
  66         return T_ID;
  67 }
  68 \:\:                                    { return T_DDCOL; }
  69 [0-9]+                                  {
  70                                             yylval->ival = atoi(yytext);
  71                                             return T_INT;
  72                                         }
  73 [0-9]*\.[0-9]+(e[0-9]+)?                {
  74                                             yylval->fval = atof(yytext);
  75                                             return T_FLOAT;
  76                                         }
  77 \".*\"                                  {
  78                                             yylval->str = strdup(yytext);
  79                                             return T_STRING;
  80                                         }
  81 .                                       { return yytext[0]; }
  82
  83 %%
  84