Filter: add floating point support

[lttng-tools.git] / src / lib / lttng-ctl / filter-lexer.l

diff --git a/src/lib/lttng-ctl/filter-lexer.l b/src/lib/lttng-ctl/filter-lexer.l
index 5853b000380ab23c69418152fa38d4ef3c67c556..de74e7a09715c11206d207b519f3c3e0dfcc53c0 100644 (file)
--- a/src/lib/lttng-ctl/filter-lexer.l
+++ b/src/lib/lttng-ctl/filter-lexer.l
@@ -33,6 +33,15 @@ static int input (yyscan_t yyscanner) __attribute__((unused));
 %option reentrant yylineno noyywrap bison-bridge
 %option extra-type="struct filter_parser_ctx *"
        /* bison-locations */
+
+D                              [0-9]
+L                              [a-zA-Z_]
+H                              [a-fA-F0-9]
+E                              ([Ee][+-]?{D}+)
+P                              ([Pp][+-]?{D}+)
+FS                             (f|F|l|L)
+IS                             ((u|U)|(u|U)?(l|L|ll|LL)|(l|L|ll|LL)(u|U))
+
 INTEGER_SUFFIX                 [ \n\t]*(U|UL|ULL|LU|LLU|Ul|Ull|lU|llU|u|uL|uLL|Lu|LLu|ul|ull|lu|llu)
 DIGIT                          [0-9]
 NONDIGIT                       [a-zA-Z_]
@@ -71,6 +80,18 @@ L\"                          BEGIN(string_lit); return STRING_LITERAL_START;
 <char_const,string_lit>\n      ; /* ignore */
 <char_const,string_lit>.       setstring(yyextra, yylval, yytext); return CHAR_STRING_TOKEN;
 
+
+0[xX]{H}+{IS}?                 setstring(yyextra, yylval, yytext); return HEXADECIMAL_CONSTANT;
+0[0-7]*{IS}?                   setstring(yyextra, yylval, yytext); return OCTAL_CONSTANT;
+[1-9]{D}*{IS}?                 setstring(yyextra, yylval, yytext); return DECIMAL_CONSTANT;
+
+{D}+{E}{FS}?                   setstring(yyextra, yylval, yytext); return FLOAT_CONSTANT;
+{D}*"."{D}+{E}?{FS}?           setstring(yyextra, yylval, yytext); return FLOAT_CONSTANT;
+{D}+"."{D}*{E}?{FS}?           setstring(yyextra, yylval, yytext); return FLOAT_CONSTANT;
+0[xX]{H}+{P}{FS}?              setstring(yyextra, yylval, yytext); return FLOAT_CONSTANT;
+0[xX]{H}*"."{H}+{P}?{FS}?      setstring(yyextra, yylval, yytext); return FLOAT_CONSTANT;
+0[xX]{H}+"."{H}*{P}?{FS}?      setstring(yyextra, yylval, yytext); return FLOAT_CONSTANT;
+
 "["                            return LSBRAC;
 "]"                            return RSBRAC;
 "("                            return LPAREN;
@@ -109,9 +130,6 @@ L\"                         BEGIN(string_lit); return STRING_LITERAL_START;
 "&"                            return AND_BIN;
 "|"                            return OR_BIN;
 "~"                            return NOT_BIN;
-[1-9]{DIGIT}*{INTEGER_SUFFIX}? setstring(yyextra, yylval, yytext); return DECIMAL_CONSTANT;
-0{OCTALDIGIT}*{INTEGER_SUFFIX}?        setstring(yyextra, yylval, yytext); return OCTAL_CONSTANT;
-0[xX]{HEXDIGIT}+{INTEGER_SUFFIX}?      setstring(yyextra, yylval, yytext); return HEXADECIMAL_CONSTANT;
 {IDENTIFIER}                   printf_debug("<IDENTIFIER %s>\n", yytext); setstring(yyextra, yylval, yytext); return IDENTIFIER;
 [ \t\n]+                       ; /* ignore */
 .                              return ERROR;