5 * Common Trace Formal Lexer
7 * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
21 #include "ctf-scanner.h"
22 #include "ctf-parser.h"
26 void setstring(struct ctf_scanner *scanner, YYSTYPE *lvalp, const char *src);
28 static void yyunput (int c, register char * yy_bp , yyscan_t yyscanner)
29 __attribute__((unused));
30 static int input (yyscan_t yyscanner) __attribute__((unused));
32 #define printf_dbg(fmt, args...) fprintf(stderr, "%s: " fmt, __func__, ##args)
36 %x comment_ml comment_sl string_lit char_const
37 %option reentrant yylineno noyywrap bison-bridge
38 %option extra-type="struct ctf_scanner *"
40 INTEGER_SUFFIX [ \n\t]*(U|UL|ULL|LU|LLU|Ul|Ull|lU|llU|u|uL|uLL|Lu|LLu|ul|ull|lu|llu)
45 UCHARLOWERCASE \\u{HEXDIGIT}{4}
46 UCHARUPPERCASE \\U{HEXDIGIT}{8}
47 ID_NONDIGIT {NONDIGIT}|{UCHARLOWERCASE}|{UCHARUPPERCASE}
48 IDENTIFIER {ID_NONDIGIT}({ID_NONDIGIT}|{DIGIT})*
49 ESCSEQ \\(\'|\"|\?|\\|a|b|f|n|r|t|v|{OCTALDIGIT}{1,3}|u{HEXDIGIT}{4}|U{HEXDIGIT}{8}|x{HEXDIGIT}+)
53 * Using start conditions to deal with comments
57 "/*" BEGIN(comment_ml);
58 <comment_ml>[^*\n]* /* eat anything that's not a '*' */
59 <comment_ml>"*"+[^*/\n]* /* eat up '*'s not followed by '/'s */
60 <comment_ml>\n ++yylineno;
61 <comment_ml>"*"+"/" BEGIN(INITIAL);
63 "//" BEGIN(comment_sl);
64 <comment_sl>[^\n]*\n ++yylineno; BEGIN(INITIAL);
66 L\' BEGIN(char_const); return CHARACTER_CONSTANT_START;
67 \' BEGIN(char_const); return CHARACTER_CONSTANT_START;
68 <char_const>\' BEGIN(INITIAL); return SQUOTE;
70 L\" BEGIN(string_lit); return STRING_LITERAL_START;
71 \" BEGIN(string_lit); return STRING_LITERAL_START;
72 <string_lit>\" BEGIN(INITIAL); return DQUOTE;
74 <char_const,string_lit>ESCSEQ return ESCSEQ;
75 <char_const,string_lit>\n ; /* ignore */
76 <char_const,string_lit>. setstring(yyextra, yylval, yytext); return CHAR_STRING_TOKEN;
93 "..." return DOTDOTDOT;
97 const setstring(yyextra, yylval, yytext); return CONST;
98 char setstring(yyextra, yylval, yytext); return CHAR;
99 double setstring(yyextra, yylval, yytext); return DOUBLE;
100 enum setstring(yyextra, yylval, yytext); return ENUM;
101 event setstring(yyextra, yylval, yytext); return EVENT;
102 floating_point setstring(yyextra, yylval, yytext); return FLOATING_POINT;
103 float setstring(yyextra, yylval, yytext); return FLOAT;
104 integer setstring(yyextra, yylval, yytext); return INTEGER;
105 int setstring(yyextra, yylval, yytext); return INT;
106 long setstring(yyextra, yylval, yytext); return LONG;
107 short setstring(yyextra, yylval, yytext); return SHORT;
108 signed setstring(yyextra, yylval, yytext); return SIGNED;
109 stream setstring(yyextra, yylval, yytext); return STREAM;
110 string setstring(yyextra, yylval, yytext); return STRING;
111 struct setstring(yyextra, yylval, yytext); return STRUCT;
112 trace setstring(yyextra, yylval, yytext); return TRACE;
113 typealias setstring(yyextra, yylval, yytext); return TYPEALIAS;
114 typedef setstring(yyextra, yylval, yytext); return TYPEDEF;
115 unsigned setstring(yyextra, yylval, yytext); return UNSIGNED;
116 variant setstring(yyextra, yylval, yytext); return VARIANT;
117 void setstring(yyextra, yylval, yytext); return VOID;
118 _Bool setstring(yyextra, yylval, yytext); return _BOOL;
119 _Complex setstring(yyextra, yylval, yytext); return _COMPLEX;
120 _Imaginary setstring(yyextra, yylval, yytext); return _IMAGINARY;
121 [1-9]{DIGIT}*{INTEGER_SUFFIX}? setstring(yyextra, yylval, yytext); return DECIMAL_CONSTANT;
122 0{OCTALDIGIT}*{INTEGER_SUFFIX}? setstring(yyextra, yylval, yytext); return OCTAL_CONSTANT;
123 0[xX]{HEXDIGIT}+{INTEGER_SUFFIX}? setstring(yyextra, yylval, yytext); return HEXADECIMAL_CONSTANT;
124 {IDENTIFIER} printf_dbg("<IDENTIFIER %s>\n", yytext); setstring(yyextra, yylval, yytext); if (is_type(yyextra, yytext)) return ID_TYPE; else return IDENTIFIER;
125 [ \t\n]+ ; /* ignore */