Changes in src/Parser/ExpressionNode.cc [b81fd95:3c67255]
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src/Parser/ExpressionNode.cc (modified) (7 diffs)
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src/Parser/ExpressionNode.cc
rb81fd95 r3c67255 10 10 // Created On : Sat May 16 13:17:07 2015 11 11 // Last Modified By : Peter A. Buhr 12 // Last Modified On : Wed Jul 15 08:24:08 202013 // Update Count : 104612 // Last Modified On : Wed Dec 18 21:14:58 2019 13 // Update Count : 981 14 14 // 15 15 … … 85 85 } // if 86 86 // remove "lL" for these cases because it may not imply long 87 str.erase( posn ); // remove length suffix and "uU"87 str.erase( posn ); // remove length 88 88 } // lnthSuffix 89 89 … … 108 108 } // valueToType 109 109 110 static void scanbin( string & str, unsigned long long int & v ) {111 v = 0;112 size_t last = str.length() - 1; // last subscript of constant113 for ( unsigned int i = 2;; ) { // ignore prefix114 if ( str[i] == '1' ) v |= 1;115 i += 1;116 if ( i == last - 1 || (str[i] != '0' && str[i] != '1') ) break;117 v <<= 1;118 } // for119 } // scanbin120 121 110 Expression * build_constantInteger( string & str ) { 122 111 static const BasicType::Kind kind[2][6] = { 123 112 // short (h) must be before char (hh) because shorter type has the longer suffix 124 { BasicType::ShortSignedInt, BasicType::SignedChar, BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt, /* BasicType::SignedInt128 */ BasicType::LongLongSignedInt, },125 { BasicType::ShortUnsignedInt, BasicType::UnsignedChar, BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt, /* BasicType::UnsignedInt128 */ BasicType::LongLongUnsignedInt, },113 { BasicType::ShortSignedInt, BasicType::SignedChar, BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt, BasicType::SignedInt128, }, 114 { BasicType::ShortUnsignedInt, BasicType::UnsignedChar, BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::UnsignedInt128, }, 126 115 }; 127 116 … … 131 120 }; // lnthsInt 132 121 133 string str2( "0x0" ); 134 unsigned long long int v, v2 = 0; // converted integral value 135 Expression * ret, * ret2; 122 unsigned long long int v; // converted integral value 123 size_t last = str.length() - 1; // last subscript of constant 124 Expression * ret; 125 //string fred( str ); 136 126 137 127 int type = -1; // 0 => short, 1 => char, 2 => int, 3 => long int, 4 => long long int, 5 => int128 … … 149 139 } // if 150 140 151 string::size_type posn;152 153 // 'u' can appear before or after length suffix154 if ( str.find_last_of( "uU" ) != string::npos ) Unsigned = true;155 156 if ( isdigit( str[str.length() - 1] ) ) { // no suffix ?157 lnthSuffix( str, type, ltype ); // could have length suffix158 if ( type == 5 && Unsigned ) str.erase( str.length() - 1 ); // L128 and terminating "uU" ?159 } else {160 // At least one digit in integer constant, so safe to backup while looking for suffix.161 162 posn = str.find_last_of( "pP" ); // pointer value163 if ( posn != string::npos ) { ltype = 5; str.erase( posn, 1 ); goto FINI; }164 165 posn = str.find_last_of( "zZ" ); // size_t166 if ( posn != string::npos ) { Unsigned = true; type = 2; ltype = 4; str.erase( posn, 1 ); goto FINI; }167 168 posn = str.rfind( "hh" ); // char169 if ( posn != string::npos ) { type = 1; str.erase( posn, 2 ); goto FINI; }170 171 posn = str.rfind( "HH" ); // char172 if ( posn != string::npos ) { type = 1; str.erase( posn, 2 ); goto FINI; }173 174 posn = str.find_last_of( "hH" ); // short175 if ( posn != string::npos ) { type = 0; str.erase( posn, 1 ); goto FINI; }176 177 posn = str.find_last_of( "nN" ); // int (natural number)178 if ( posn != string::npos ) { type = 2; str.erase( posn, 1 ); goto FINI; }179 180 if ( str.rfind( "ll" ) != string::npos || str.rfind( "LL" ) != string::npos ) { type = 4; goto FINI; }181 182 lnthSuffix( str, type, ltype ); // must be after check for "ll"183 FINI: ;184 } // if185 186 141 // Cannot be just "0"/"1"; sscanf stops at the suffix, if any; value goes over the wall => always generate 187 142 188 #if ! defined(__SIZEOF_INT128__)189 if ( type == 5 ) SemanticError( yylloc, "int128 constant is not supported on this target " + str );190 #endif // ! __SIZEOF_INT128__191 192 143 if ( str[0] == '0' ) { // radix character ? 193 144 dec = false; 194 145 if ( checkX( str[1] ) ) { // hex constant ? 195 if ( type < 5 ) { // not L128 ? 196 sscanf( (char *)str.c_str(), "%llx", &v ); 197 } else { // hex int128 constant 198 unsigned int len = str.length(); 199 if ( len > (2 + 16 + 16) ) SemanticError( yylloc, "128-bit hexadecimal constant to large " + str ); 200 if ( len <= (2 + 16) ) goto FHEX1; // hex digits < 2^64 201 str2 = "0x" + str.substr( len - 16 ); 202 sscanf( (char *)str2.c_str(), "%llx", &v2 ); 203 str = str.substr( 0, len - 16 ); 204 FHEX1: ; 205 sscanf( (char *)str.c_str(), "%llx", &v ); 206 } // if 146 sscanf( (char *)str.c_str(), "%llx", &v ); 207 147 //printf( "%llx %llu\n", v, v ); 208 148 } else if ( checkB( str[1] ) ) { // binary constant ? 209 unsigned int len = str.length(); 210 if ( type == 5 && len > 2 + 64 ) { 211 if ( len > 2 + 64 + 64 ) SemanticError( yylloc, "128-bit binary constant to large " + str ); 212 str2 = "0b" + str.substr( len - 64 ); 213 str = str.substr( 0, len - 64 ); 214 scanbin( str2, v2 ); 215 } // if 216 scanbin( str, v ); 149 v = 0; // compute value 150 for ( unsigned int i = 2;; ) { // ignore prefix 151 if ( str[i] == '1' ) v |= 1; 152 i += 1; 153 if ( i == last - 1 || (str[i] != '0' && str[i] != '1') ) break; 154 v <<= 1; 155 } // for 217 156 //printf( "%#llx %llu\n", v, v ); 218 157 } else { // octal constant 219 if ( type < 5 ) { // not L128 ? 220 sscanf( (char *)str.c_str(), "%llo", &v ); 221 #if defined(__SIZEOF_INT128__) 222 } else { // octal int128 constant 223 unsigned int len = str.length(); 224 if ( len > 1 + 43 || (len == 1 + 43 && str[0] > '3') ) SemanticError( yylloc, "128-bit octal constant to large " + str ); 225 if ( len <= 1 + 21 ) { // value < 21 octal digitis 226 sscanf( (char *)str.c_str(), "%llo", &v ); // leave value in octal 227 } else { 228 sscanf( &str[len - 21], "%llo", &v ); 229 __int128 val = v; // accumulate bits 230 str[len - 21] ='\0'; // shorten string 231 sscanf( &str[len == 43 ? 1 : 0], "%llo", &v ); 232 val |= (__int128)v << 63; // store bits 233 if ( len == 1 + 43 ) { // most significant 2 bits ? 234 str[2] = '\0'; // shorten string 235 sscanf( &str[1], "%llo", &v ); // process most significant 2 bits 236 val |= (__int128)v << 126; // store bits 237 } // if 238 v = val >> 64; v2 = (uint64_t)val; // replace octal constant with 2 hex constants 239 char buf[32]; 240 sprintf( buf, "%#llx", v2 ); 241 str2 = buf; 242 sprintf( buf, "%#llx", v ); 243 str = buf; 244 } // if 245 #endif // __SIZEOF_INT128__ 246 } // if 158 sscanf( (char *)str.c_str(), "%llo", &v ); 247 159 //printf( "%#llo %llu\n", v, v ); 248 160 } // if 249 161 } else { // decimal constant ? 250 if ( type < 5 ) { // not L128 ? 251 sscanf( (char *)str.c_str(), "%llu", &v ); 252 #if defined(__SIZEOF_INT128__) 253 } else { // decimal int128 constant 254 #define P10_UINT64 10'000'000'000'000'000'000ULL // 19 zeroes 255 unsigned int len = str.length(); 256 if ( str.length() == 39 && str > (Unsigned ? "340282366920938463463374607431768211455" : "170141183460469231731687303715884105727") ) 257 SemanticError( yylloc, "128-bit decimal constant to large " + str ); 258 if ( len <= 19 ) { // value < 19 decimal digitis 259 sscanf( (char *)str.c_str(), "%llu", &v ); // leave value in decimal 260 } else { 261 sscanf( &str[len - 19], "%llu", &v ); 262 __int128 val = v; // accumulate bits 263 str[len - 19] ='\0'; // shorten string 264 sscanf( &str[len == 39 ? 1 : 0], "%llu", &v ); 265 val += (__int128)v * (__int128)P10_UINT64; // store bits 266 if ( len == 39 ) { // most significant 2 bits ? 267 str[1] = '\0'; // shorten string 268 sscanf( &str[0], "%llu", &v ); // process most significant 2 bits 269 val += (__int128)v * (__int128)P10_UINT64 * (__int128)P10_UINT64; // store bits 270 } // if 271 v = val >> 64; v2 = (uint64_t)val; // replace decimal constant with 2 hex constants 272 char buf[32]; 273 sprintf( buf, "%#llx", v2 ); 274 str2 = buf; 275 sprintf( buf, "%#llx", v ); 276 str = buf; 277 } // if 278 #endif // __SIZEOF_INT128__ 279 } // if 162 sscanf( (char *)str.c_str(), "%llu", &v ); 280 163 //printf( "%llu\n", v ); 281 164 } // if 282 165 283 if ( type == -1 ) { // no suffix => determine type from value size 284 valueToType( v, dec, type, Unsigned ); 285 } // if 286 /* printf( "%s %llo %s %llo\n", str.c_str(), v, str2.c_str(), v2 ); */ 166 string::size_type posn; 167 168 if ( isdigit( str[last] ) ) { // no suffix ? 169 lnthSuffix( str, type, ltype ); // could have length suffix 170 if ( type == -1 ) { // no suffix 171 valueToType( v, dec, type, Unsigned ); 172 } // if 173 } else { 174 // At least one digit in integer constant, so safe to backup while looking for suffix. 175 176 posn = str.find_last_of( "pP" ); 177 if ( posn != string::npos ) { valueToType( v, dec, type, Unsigned ); ltype = 5; str.erase( posn, 1 ); goto FINI; } 178 179 posn = str.find_last_of( "zZ" ); 180 if ( posn != string::npos ) { Unsigned = true; type = 2; ltype = 4; str.erase( posn, 1 ); goto FINI; } 181 182 // 'u' can appear before or after length suffix 183 if ( str.find_last_of( "uU" ) != string::npos ) Unsigned = true; 184 185 posn = str.rfind( "hh" ); 186 if ( posn != string::npos ) { type = 1; str.erase( posn, 2 ); goto FINI; } 187 188 posn = str.rfind( "HH" ); 189 if ( posn != string::npos ) { type = 1; str.erase( posn, 2 ); goto FINI; } 190 191 posn = str.find_last_of( "hH" ); 192 if ( posn != string::npos ) { type = 0; str.erase( posn, 1 ); goto FINI; } 193 194 posn = str.find_last_of( "nN" ); 195 if ( posn != string::npos ) { type = 2; str.erase( posn, 1 ); goto FINI; } 196 197 if ( str.rfind( "ll" ) != string::npos || str.rfind( "LL" ) != string::npos ) { type = 4; goto FINI; } 198 199 lnthSuffix( str, type, ltype ); // must be after check for "ll" 200 if ( type == -1 ) { // only 'u' suffix ? 201 valueToType( v, dec, type, Unsigned ); 202 } // if 203 FINI: ; 204 } // if 287 205 288 206 //if ( !( 0 <= type && type <= 6 ) ) { printf( "%s %lu %d %s\n", fred.c_str(), fred.length(), type, str.c_str() ); } … … 296 214 } else if ( ltype != -1 ) { // explicit length ? 297 215 if ( ltype == 6 ) { // int128, (int128)constant 298 // ret = new CastExpr( ret, new BasicType( Type::Qualifiers(), kind[Unsigned][type] ), false ); 299 ret2 = new ConstantExpr( Constant( new BasicType( noQualifiers, BasicType::LongLongSignedInt ), str2, v2 ) ); 300 ret = build_compoundLiteral( DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ), 301 new InitializerNode( (InitializerNode *)(new InitializerNode( new ExpressionNode( v2 == 0 ? ret2 : ret ) ))->set_last( new InitializerNode( new ExpressionNode( v2 == 0 ? ret : ret2 ) ) ), true ) ); 216 ret = new CastExpr( ret, new BasicType( Type::Qualifiers(), kind[Unsigned][type] ), false ); 302 217 } else { // explicit length, (length_type)constant 303 218 ret = new CastExpr( ret, new TypeInstType( Type::Qualifiers(), lnthsInt[Unsigned][ltype], false ), false ); … … 427 342 if ( str[1] == '8' ) goto Default; // utf-8 characters => array of char 428 343 // lookup type of associated typedef 429 strtype = new TypeInstType( Type::Qualifiers( ), "char16_t", false );344 strtype = new TypeInstType( Type::Qualifiers( Type::Const ), "char16_t", false ); 430 345 break; 431 346 case 'U': 432 strtype = new TypeInstType( Type::Qualifiers( ), "char32_t", false );347 strtype = new TypeInstType( Type::Qualifiers( Type::Const ), "char32_t", false ); 433 348 break; 434 349 case 'L': 435 strtype = new TypeInstType( Type::Qualifiers( ), "wchar_t", false );350 strtype = new TypeInstType( Type::Qualifiers( Type::Const ), "wchar_t", false ); 436 351 break; 437 352 Default: // char default string type 438 353 default: 439 strtype = new BasicType( Type::Qualifiers( ), BasicType::Char );354 strtype = new BasicType( Type::Qualifiers( Type::Const ), BasicType::Char ); 440 355 } // switch 441 356 ArrayType * at = new ArrayType( noQualifiers, strtype,
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