diff options
Diffstat (limited to '3rdparty/libconfig/extra/gen/scanner.l')
| -rw-r--r-- | 3rdparty/libconfig/extra/gen/scanner.l | 196 |
1 files changed, 84 insertions, 112 deletions
diff --git a/3rdparty/libconfig/extra/gen/scanner.l b/3rdparty/libconfig/extra/gen/scanner.l index f75bf67f6..4a7e5a06d 100644 --- a/3rdparty/libconfig/extra/gen/scanner.l +++ b/3rdparty/libconfig/extra/gen/scanner.l @@ -50,100 +50,103 @@ #define YY_NO_INPUT // Suppress generation of useless input() function -static unsigned long long fromhex(const char *s) +/** + * converts a hexadecimal number literal to an ull integer + * + * @param p - a pointer to the hexacimal expression to parse + * @returns the resulting unsigned long long integer + */ +static unsigned long long fromhex(const char *p) { -#ifdef __MINGW32__ - - /* MinGW's strtoull() seems to be broken; it only returns the lower - * 32 bits... - */ - - const char *p = s; unsigned long long val = 0; - if(*p != '0') - return(0); - - ++p; - - if(*p != 'x' && *p != 'X') - return(0); - - for(++p; isxdigit(*p); ++p) - { - val <<= 4; - val |= ((*p < 'A') ? (*p & 0xF) : (9 + (*p & 0x7))); + if (*p != '0' || (p[1] != 'x' && p[1] != 'X')) { + return 0; } - return(val); - -#else /* ! __MINGW32__ */ - - return(strtoull(s, NULL, 16)); + for (p += 2; isxdigit(*p) || *p == '_'; ++p) { + if (*p != '_') { + val <<= 4; + val |= ((*p < 'A') ? (*p & 0xF) : (9 + (*p & 0x7))); + } + } -#endif /* __MINGW32__ */ + return val; } -static unsigned long long frombin (const char *s) +/** + * converts a binary number literal to an ull integer + * + * @param p - a pointer to the hexacimal expression to parse + * @returns the resulting unsigned long long integer + */ +static unsigned long long frombin (const char *p) { -#ifdef __MINGW32__ - - /* same problem as fromhex(): MinGW's strtoull() is broken */ - - const char *p = s; unsigned long long val = 0; - if (*p != '0') - return(0); - - ++p; - - if (*p != 'b' && *p != 'B') - return(0); + if (*p != '0' || (p[1] != 'b' && p[1] != 'B')) { + return 0; + } - for (++p; *p == '0' || *p == '1'; ++p) { - val <<= 1; - val |= *p == '0' ? 0 : 1; + for (p += 2; *p == '0' || *p == '1' || *p == '_'; ++p) { + if (*p != '_') { + val <<= 1; + val |= (*p == '0') ? 0 : 1; + } } return val; - -#else /* ! __MINGW32__ */ - - return strtoull(s + 2, NULL, 2); - -#endif /* __MINGW32__ */ } -static unsigned long long fromoct (const char *s) +/** + * converts an octal number literal to an ull integer + * + * @param p - a pointer to the hexacimal expression to parse + * @returns the resulting unsigned long long integer + */ +static unsigned long long fromoct (const char *p) { -#ifdef __MINGW32__ - - /* same problem as fromhex(): MinGW's strtoull() is broken */ - - const char *p = s; unsigned long long val = 0; - if (*p != '0') - return(0); - - ++p; - - if (*p != 'o' && *p != 'O') - return(0); + if (*p != '0' || (p[1] != 'o' && p[1] != 'O')) { + return 0; + } - for (++p; *p >= '0' && *p <= '7'; ++p) { - val <<= 3; - val |= *p & 0xF; + for (p += 2; (*p >= '0' && *p <= '7') || *p == '_'; ++p) { + if (*p != '_') { + val <<= 3; + val |= (*p & 0xF); + } } return val; +} -#else /* ! __MINGW32__ */ +/** + * converts a decimal number literal to a ll integer + * + * @param p - a pointer to the hexacimal expression to parse + * @returns the resulting signed long long integer + */ +static long long fromdec (const char *p) +{ + unsigned char is_neg = 0; - return strtoull(s + 2, NULL, 8); + if (*p == '-') { + is_neg = 1; + p++; + } + + long long val = 0; + + for (; isdigit(*p) || *p == '_'; ++p) { + if (*p != '_') { + val *= 10; + val += (*p & 0xF); + } + } -#endif /* __MINGW32__ */ + return (is_neg == 1) ? -val : val; } %} @@ -151,14 +154,14 @@ static unsigned long long fromoct (const char *s) true [Tt][Rr][Uu][Ee] false [Ff][Aa][Ll][Ss][Ee] name [A-Za-z0-9\*][-A-Za-z0-9_\*.]* -integer [-+]?[0-9]+ -integer64 [-+]?[0-9]+L(L)? -hex 0[Xx][0-9A-Fa-f]+ -hex64 0[Xx][0-9A-Fa-f]+L(L)? -bin 0[Bb][01]+ -bin64 0[Bb][01]+L(L)? -oct 0[Oo][0-7]+ -oct64 0[Oo][0-7]+L(L)? +integer [-+]?[0-9_]+ +integer64 [-+]?[0-9_]+L(L)? +hex 0[Xx][0-9A-Fa-f_]+ +hex64 0[Xx][0-9A-Fa-f_]+L(L)? +bin 0[Bb][01_]+ +bin64 0[Bb][01_]+L(L)? +oct 0[Oo][0-7_]+ +oct64 0[Oo][0-7_]+L(L)? hexchar \\[Xx][0-9A-Fa-f]{2} float ([-+]?([0-9]*)?\.[0-9]*([eE][-+]?[0-9]+)?)|([-+]?([0-9]+)(\.[0-9]*)?[eE][-+]?[0-9]+) comment (#|\/\/).*$ @@ -239,44 +242,13 @@ include_open ^[ \t]*@include[ \t]+\" {true} { yylval->ival = 1; return(TOK_BOOLEAN); } {false} { yylval->ival = 0; return(TOK_BOOLEAN); } {float} { yylval->fval = atof(yytext); return(TOK_FLOAT); } -{integer} { - long long llval; - llval = atoll(yytext); - if((llval < INT_MIN) || (llval > INT_MAX)) - { - yylval->llval = llval; - return(TOK_INTEGER64); - } - else - { - yylval->ival = (int)llval; - return(TOK_INTEGER); - } - } -{integer64} { yylval->llval = atoll(yytext); return(TOK_INTEGER64); } -{hex} { - unsigned long ulval = strtoul(yytext, NULL, 16); - if (ulval > INT32_MAX) - ulval &= INT32_MAX; - yylval->ival = (int)ulval; - return(TOK_HEX); - } -{hex64} { yylval->llval = fromhex(yytext); return(TOK_HEX64); } -{bin} { - unsigned long ulval = strtoul(yytext + 2, NULL, 2); - if (ulval > INT32_MAX) - ulval &= INT32_MAX; - yylval->ival = (int)ulval; - return TOK_BIN; - } +{integer} { yylval->ival = (int)fromdec(yytext); return TOK_INTEGER; } +{integer64} { yylval->llval = fromdec(yytext); return TOK_INTEGER64; } +{hex} { yylval->ival = (int)fromhex(yytext); return TOK_HEX; } +{hex64} { yylval->llval = fromhex(yytext); return TOK_HEX64; } +{bin} { yylval->ival = (int)frombin(yytext); return TOK_BIN; } {bin64} { yylval->llval = frombin(yytext); return TOK_BIN64; } -{oct} { - unsigned long ulval = strtoul(yytext + 2, NULL, 8); - if (ulval > INT32_MAX) - ulval &= INT32_MAX; - yylval->ival = (int)ulval; - return TOK_OCT; - } +{oct} { yylval->ival = (int)fromoct(yytext); return TOK_OCT; } {oct64} { yylval->llval = fromoct(yytext); return TOK_OCT64; } {name} { yylval->sval = yytext; return(TOK_NAME); } \[ { return(TOK_ARRAY_START); } |