Changeset 22f94a4 for src/Parser/ExpressionNode.cc
- Timestamp:
- Aug 11, 2020, 4:40:15 PM (4 years ago)
- Branches:
- ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, master, new-ast, new-ast-unique-expr, pthread-emulation, qualifiedEnum
- Children:
- 0d070ca
- Parents:
- 07d867b (diff), 129674b (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the(diff)links above to see all the changes relative to each parent. - File:
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- 1 edited
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src/Parser/ExpressionNode.cc (modified) (7 diffs)
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src/Parser/ExpressionNode.cc
r07d867b r22f94a4 10 10 // Created On : Sat May 16 13:17:07 2015 11 11 // Last Modified By : Peter A. Buhr 12 // Last Modified On : Wed Dec 18 21:14:58 201913 // Update Count : 98112 // Last Modified On : Wed Jul 15 08:24:08 2020 13 // Update Count : 1046 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 87 str.erase( posn ); // remove length suffix and "uU" 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 constant 113 for ( unsigned int i = 2;; ) { // ignore prefix 114 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 } // for 119 } // scanbin 120 110 121 Expression * build_constantInteger( string & str ) { 111 122 static const BasicType::Kind kind[2][6] = { 112 123 // short (h) must be before char (hh) because shorter type has the longer suffix 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, },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, }, 115 126 }; 116 127 … … 120 131 }; // lnthsInt 121 132 122 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 ); 133 string str2( "0x0" ); 134 unsigned long long int v, v2 = 0; // converted integral value 135 Expression * ret, * ret2; 126 136 127 137 int type = -1; // 0 => short, 1 => char, 2 => int, 3 => long int, 4 => long long int, 5 => int128 … … 139 149 } // if 140 150 151 string::size_type posn; 152 153 // 'u' can appear before or after length suffix 154 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 suffix 158 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 value 163 if ( posn != string::npos ) { ltype = 5; str.erase( posn, 1 ); goto FINI; } 164 165 posn = str.find_last_of( "zZ" ); // size_t 166 if ( posn != string::npos ) { Unsigned = true; type = 2; ltype = 4; str.erase( posn, 1 ); goto FINI; } 167 168 posn = str.rfind( "hh" ); // char 169 if ( posn != string::npos ) { type = 1; str.erase( posn, 2 ); goto FINI; } 170 171 posn = str.rfind( "HH" ); // char 172 if ( posn != string::npos ) { type = 1; str.erase( posn, 2 ); goto FINI; } 173 174 posn = str.find_last_of( "hH" ); // short 175 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 } // if 185 141 186 // Cannot be just "0"/"1"; sscanf stops at the suffix, if any; value goes over the wall => always generate 142 187 188 #if ! defined(__SIZEOF_INT128__) 189 if ( type == 5 ) SemanticError( yylloc, "int128 constant is not supported on this target " + str ); 190 #endif // ! __SIZEOF_INT128__ 191 143 192 if ( str[0] == '0' ) { // radix character ? 144 193 dec = false; 145 194 if ( checkX( str[1] ) ) { // hex constant ? 146 sscanf( (char *)str.c_str(), "%llx", &v ); 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 147 207 //printf( "%llx %llu\n", v, v ); 148 208 } else if ( checkB( str[1] ) ) { // binary constant ? 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 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 ); 156 217 //printf( "%#llx %llu\n", v, v ); 157 218 } else { // octal constant 158 sscanf( (char *)str.c_str(), "%llo", &v ); 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 159 247 //printf( "%#llo %llu\n", v, v ); 160 248 } // if 161 249 } else { // decimal constant ? 162 sscanf( (char *)str.c_str(), "%llu", &v ); 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 163 280 //printf( "%llu\n", v ); 164 281 } // if 165 282 166 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 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 ); */ 205 287 206 288 //if ( !( 0 <= type && type <= 6 ) ) { printf( "%s %lu %d %s\n", fred.c_str(), fred.length(), type, str.c_str() ); } … … 214 296 } else if ( ltype != -1 ) { // explicit length ? 215 297 if ( ltype == 6 ) { // int128, (int128)constant 216 ret = new CastExpr( ret, new BasicType( Type::Qualifiers(), kind[Unsigned][type] ), false ); 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 ) ); 217 302 } else { // explicit length, (length_type)constant 218 303 ret = new CastExpr( ret, new TypeInstType( Type::Qualifiers(), lnthsInt[Unsigned][ltype], false ), false ); … … 342 427 if ( str[1] == '8' ) goto Default; // utf-8 characters => array of char 343 428 // lookup type of associated typedef 344 strtype = new TypeInstType( Type::Qualifiers( Type::Const), "char16_t", false );429 strtype = new TypeInstType( Type::Qualifiers( ), "char16_t", false ); 345 430 break; 346 431 case 'U': 347 strtype = new TypeInstType( Type::Qualifiers( Type::Const), "char32_t", false );432 strtype = new TypeInstType( Type::Qualifiers( ), "char32_t", false ); 348 433 break; 349 434 case 'L': 350 strtype = new TypeInstType( Type::Qualifiers( Type::Const), "wchar_t", false );435 strtype = new TypeInstType( Type::Qualifiers( ), "wchar_t", false ); 351 436 break; 352 437 Default: // char default string type 353 438 default: 354 strtype = new BasicType( Type::Qualifiers( Type::Const), BasicType::Char );439 strtype = new BasicType( Type::Qualifiers( ), BasicType::Char ); 355 440 } // switch 356 441 ArrayType * at = new ArrayType( noQualifiers, strtype,
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