formats/ctf/metadata/ctf-lexer.l

   1 %{
   2 #include <stdio.h>
   3 #include "ctf-scanner.h"
   4 #include "ctf-parser.h"
   5 #include "ctf-ast.h"
   6
   7 extern void setstring(struct ctf_scanner *scanner, YYSTYPE *lvalp, const char *src);
   8
   9 #define printf_dbg(fmt, args...)        fprintf(stderr, "%s: " fmt, __func__, args)
  10 #define printf_dbg_noarg(fmt)   fprintf(stderr, "%s: " fmt, __func__)
  11
  12 %}
  13
  14 %x comment_ml comment_sl string_lit char_const
  15 %option reentrant yylineno noyywrap bison-bridge
  16 %option extra-type="struct ctf_scanner *"
  17         /* bison-locations */
  18 INTEGER_SUFFIX                  [ \n\t]*(U|UL|ULL|LU|LLU|Ul|Ull|lU|llU|u|uL|uLL|Lu|LLu|ul|ull|lu|llu)
  19 DIGIT                           [0-9]
  20 NONDIGIT                        [a-zA-Z_]
  21 HEXDIGIT                        [0-9A-Fa-f]
  22 OCTALDIGIT                      [0-7]
  23 UCHARLOWERCASE                  \\u{HEXDIGIT}{4}
  24 UCHARUPPERCASE                  \\U{HEXDIGIT}{8}
  25 ID_NONDIGIT                     {NONDIGIT}|{UCHARLOWERCASE}|{UCHARUPPERCASE}
  26 IDENTIFIER                      {ID_NONDIGIT}({ID_NONDIGIT}|{DIGIT})*
  27 ESCSEQ                          \\(\'|\"|\?|\\|a|b|f|n|r|t|v|{OCTALDIGIT}{1,3}|u{HEXDIGIT}{4}|U{HEXDIGIT}{8}|x{HEXDIGIT}+)
  28 %%
  29
  30                                 /*
  31                                  * Using start conditions to deal with comments
  32                                  * and strings.
  33                                  */
  34
  35 "/*"                            BEGIN(comment_ml);
  36 <comment_ml>[^*\n]*             /* eat anything that's not a '*' */
  37 <comment_ml>"*"+[^*/\n]*        /* eat up '*'s not followed by '/'s */
  38 <comment_ml>\n                  ++yylineno;
  39 <comment_ml>"*"+"/"             BEGIN(INITIAL);
  40
  41 "//"                            BEGIN(comment_sl);
  42 <comment_sl>[^\n]*\n            ++yylineno; BEGIN(INITIAL);
  43
  44 L\'                             BEGIN(char_const); return CHARACTER_CONSTANT_START;
  45 \'                              BEGIN(char_const); return CHARACTER_CONSTANT_START;
  46 <char_const>\'                  BEGIN(INITIAL); return SQUOTE;
  47
  48 L\"                             BEGIN(string_lit); return STRING_LITERAL_START;
  49 \"                              BEGIN(string_lit); return STRING_LITERAL_START;
  50 <string_lit>\"                  BEGIN(INITIAL); return DQUOTE;
  51
  52 <char_const,string_lit>ESCSEQ   return ESCSEQ;
  53 <char_const,string_lit>\n       ; /* ignore */
  54 <char_const,string_lit>.        return CHAR_STRING_TOKEN;
  55
  56 "["                             return LSBRAC;
  57 "]"                             return RSBRAC;
  58 "("                             return LPAREN;
  59 ")"                             return RPAREN;
  60 "{"                             return LBRAC;
  61 "}"                             return RBRAC;
  62 "->"                            return RARROW;
  63 "*"                             return STAR;
  64 "+"                             return PLUS;
  65 "-"                             return MINUS;
  66 "<"                             return LT;
  67 ">"                             return GT;
  68 :=                              return TYPEASSIGN;
  69 :                               return COLON;
  70 ;                               return SEMICOLON;
  71 "..."                           return DOTDOTDOT;
  72 "."                             return DOT;
  73 =                               return EQUAL;
  74 ","                             return COMMA;
  75 const                           return CONST;
  76 char                            return CHAR;
  77 double                          return DOUBLE;
  78 enum                            return ENUM;
  79 event                           return EVENT;
  80 floating_point                  return FLOATING_POINT;
  81 float                           return FLOAT;
  82 integer                         return INTEGER;
  83 int                             return INT;
  84 long                            return LONG;
  85 short                           return SHORT;
  86 signed                          return SIGNED;
  87 stream                          return STREAM;
  88 string                          return STRING;
  89 struct                          return STRUCT;
  90 trace                           return TRACE;
  91 typealias                       return TYPEALIAS;
  92 typedef                         return TYPEDEF;
  93 unsigned                        return UNSIGNED;
  94 variant                         return VARIANT;
  95 void                            return VOID;
  96 _Bool                           return _BOOL;
  97 _Complex                        return _COMPLEX;
  98 _Imaginary                      return _IMAGINARY;
  99 [1-9]{DIGIT}*{INTEGER_SUFFIX}?  return DECIMAL_CONSTANT;
 100 0{OCTALDIGIT}*{INTEGER_SUFFIX}? return OCTAL_CONSTANT;
 101 0[xX]{HEXDIGIT}+{INTEGER_SUFFIX}?       return HEXADECIMAL_CONSTANT;
 102 {IDENTIFIER}                    printf_dbg("<IDENTIFIER %s>\n", yytext); setstring(yyextra, yylval, yytext); if (is_type(yyextra, yytext)) return ID_TYPE; else return IDENTIFIER;
 103 [ \t\n]+                        ; /* ignore */
 104 .                               return ERROR;
 105 %%