[d1e0979] | 1 | //
|
---|
| 2 | // Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo
|
---|
| 3 | //
|
---|
| 4 | // The contents of this file are covered under the licence agreement in the
|
---|
| 5 | // file "LICENCE" distributed with Cforall.
|
---|
| 6 | //
|
---|
| 7 | // Demangler.cc --
|
---|
| 8 | //
|
---|
| 9 | // Author : Rob Schluntz
|
---|
| 10 | // Created On : Thu Jul 19 12:52:41 2018
|
---|
| 11 | // Last Modified By : Rob Schluntz
|
---|
| 12 | // Last Modified On : Thu Jul 19 12:54:35 2018
|
---|
| 13 | // Update Count : 2
|
---|
| 14 | //
|
---|
| 15 |
|
---|
| 16 | #include <algorithm>
|
---|
| 17 | #include <sstream>
|
---|
| 18 |
|
---|
| 19 | #include "CodeGen/GenType.h"
|
---|
| 20 | #include "Common/PassVisitor.h"
|
---|
| 21 | #include "Mangler.h"
|
---|
| 22 | #include "SynTree/Type.h"
|
---|
| 23 | #include "SynTree/Declaration.h"
|
---|
| 24 |
|
---|
[04c77791] | 25 | #define DEBUG
|
---|
[d1e0979] | 26 | #ifdef DEBUG
|
---|
| 27 | #define PRINT(x) x
|
---|
| 28 | #else
|
---|
| 29 | #define PRINT(x) {}
|
---|
| 30 | #endif
|
---|
| 31 |
|
---|
| 32 | namespace {
|
---|
| 33 | struct GenType : public WithVisitorRef<GenType>, public WithShortCircuiting {
|
---|
| 34 | std::string typeString;
|
---|
| 35 | GenType( const std::string &typeString );
|
---|
| 36 |
|
---|
| 37 | void previsit( BaseSyntaxNode * );
|
---|
| 38 | void postvisit( BaseSyntaxNode * );
|
---|
| 39 |
|
---|
| 40 | void postvisit( FunctionType * funcType );
|
---|
| 41 | void postvisit( VoidType * voidType );
|
---|
| 42 | void postvisit( BasicType * basicType );
|
---|
| 43 | void postvisit( PointerType * pointerType );
|
---|
| 44 | void postvisit( ArrayType * arrayType );
|
---|
| 45 | void postvisit( ReferenceType * refType );
|
---|
| 46 | void postvisit( StructInstType * structInst );
|
---|
| 47 | void postvisit( UnionInstType * unionInst );
|
---|
| 48 | void postvisit( EnumInstType * enumInst );
|
---|
| 49 | void postvisit( TypeInstType * typeInst );
|
---|
| 50 | void postvisit( TupleType * tupleType );
|
---|
| 51 | void postvisit( VarArgsType * varArgsType );
|
---|
| 52 | void postvisit( ZeroType * zeroType );
|
---|
| 53 | void postvisit( OneType * oneType );
|
---|
| 54 | void postvisit( GlobalScopeType * globalType );
|
---|
| 55 | void postvisit( QualifiedType * qualType );
|
---|
| 56 |
|
---|
| 57 | private:
|
---|
| 58 | void handleQualifiers( Type *type );
|
---|
| 59 | std::string handleGeneric( ReferenceToType * refType );
|
---|
| 60 | void genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic );
|
---|
| 61 | };
|
---|
| 62 |
|
---|
| 63 | std::string genDemangleType( Type * type, const std::string & baseString ) {
|
---|
| 64 | PassVisitor<GenType> gt( baseString );
|
---|
| 65 | assert( type );
|
---|
| 66 | type->accept( gt );
|
---|
| 67 | return gt.pass.typeString;
|
---|
| 68 | }
|
---|
| 69 |
|
---|
| 70 | GenType::GenType( const std::string &typeString ) : typeString( typeString ) {}
|
---|
| 71 |
|
---|
| 72 | // *** BaseSyntaxNode
|
---|
| 73 | void GenType::previsit( BaseSyntaxNode * ) {
|
---|
| 74 | // turn off automatic recursion for all nodes, to allow each visitor to
|
---|
| 75 | // precisely control the order in which its children are visited.
|
---|
| 76 | visit_children = false;
|
---|
| 77 | }
|
---|
| 78 |
|
---|
| 79 | void GenType::postvisit( BaseSyntaxNode * node ) {
|
---|
| 80 | std::stringstream ss;
|
---|
| 81 | node->print( ss );
|
---|
| 82 | assertf( false, "Unhandled node reached in GenType: %s", ss.str().c_str() );
|
---|
| 83 | }
|
---|
| 84 |
|
---|
| 85 | void GenType::postvisit( VoidType * voidType ) {
|
---|
| 86 | typeString = "void " + typeString;
|
---|
| 87 | handleQualifiers( voidType );
|
---|
| 88 | }
|
---|
| 89 |
|
---|
| 90 | void GenType::postvisit( BasicType * basicType ) {
|
---|
| 91 | BasicType::Kind kind = basicType->kind;
|
---|
| 92 | assert( 0 <= kind && kind < BasicType::NUMBER_OF_BASIC_TYPES );
|
---|
| 93 | typeString = std::string( BasicType::typeNames[kind] ) + " " + typeString;
|
---|
| 94 | handleQualifiers( basicType );
|
---|
| 95 | }
|
---|
| 96 |
|
---|
| 97 | void GenType::genArray( const Type::Qualifiers & qualifiers, Type * base, Expression *dimension, bool isVarLen, bool ) {
|
---|
| 98 | std::ostringstream os;
|
---|
| 99 | if ( typeString != "" ) {
|
---|
| 100 | if ( typeString[ 0 ] == '*' ) {
|
---|
| 101 | os << "(" << typeString << ")";
|
---|
| 102 | } else {
|
---|
| 103 | os << typeString;
|
---|
| 104 | } // if
|
---|
| 105 | } // if
|
---|
| 106 | os << "[";
|
---|
| 107 |
|
---|
| 108 | if ( qualifiers.is_const ) {
|
---|
| 109 | os << "const ";
|
---|
| 110 | } // if
|
---|
| 111 | if ( qualifiers.is_volatile ) {
|
---|
| 112 | os << "volatile ";
|
---|
| 113 | } // if
|
---|
| 114 | if ( qualifiers.is_restrict ) {
|
---|
| 115 | os << "__restrict ";
|
---|
| 116 | } // if
|
---|
| 117 | if ( qualifiers.is_atomic ) {
|
---|
| 118 | os << "_Atomic ";
|
---|
| 119 | } // if
|
---|
| 120 | if ( dimension != 0 ) {
|
---|
| 121 | // TODO: ???
|
---|
| 122 | // PassVisitor<CodeGenerator> cg( os, pretty, genC, lineMarks );
|
---|
| 123 | // dimension->accept( cg );
|
---|
| 124 | } else if ( isVarLen ) {
|
---|
| 125 | // no dimension expression on a VLA means it came in with the * token
|
---|
| 126 | os << "*";
|
---|
| 127 | } // if
|
---|
| 128 | os << "]";
|
---|
| 129 |
|
---|
| 130 | typeString = os.str();
|
---|
| 131 |
|
---|
| 132 | base->accept( *visitor );
|
---|
| 133 | }
|
---|
| 134 |
|
---|
| 135 | void GenType::postvisit( PointerType * pointerType ) {
|
---|
| 136 | assert( pointerType->base != 0);
|
---|
| 137 | if ( pointerType->get_isStatic() || pointerType->get_isVarLen() || pointerType->dimension ) {
|
---|
| 138 | assert(false);
|
---|
| 139 | genArray( pointerType->get_qualifiers(), pointerType->base, pointerType->dimension, pointerType->get_isVarLen(), pointerType->get_isStatic() );
|
---|
| 140 | } else {
|
---|
| 141 | handleQualifiers( pointerType );
|
---|
| 142 | if ( typeString[ 0 ] == '?' ) {
|
---|
| 143 | typeString = "* " + typeString;
|
---|
| 144 | } else {
|
---|
| 145 | typeString = "*" + typeString;
|
---|
| 146 | } // if
|
---|
| 147 | pointerType->base->accept( *visitor );
|
---|
| 148 | } // if
|
---|
| 149 | }
|
---|
| 150 |
|
---|
| 151 | void GenType::postvisit( ArrayType * arrayType ) {
|
---|
| 152 | genArray( arrayType->get_qualifiers(), arrayType->base, arrayType->dimension, arrayType->get_isVarLen(), arrayType->get_isStatic() );
|
---|
| 153 | }
|
---|
| 154 |
|
---|
| 155 | void GenType::postvisit( ReferenceType * refType ) {
|
---|
| 156 | assert( false );
|
---|
| 157 | assert( refType->base != 0);
|
---|
| 158 | handleQualifiers( refType );
|
---|
| 159 | typeString = "&" + typeString;
|
---|
| 160 | refType->base->accept( *visitor );
|
---|
| 161 | }
|
---|
| 162 |
|
---|
| 163 | void GenType::postvisit( FunctionType * funcType ) {
|
---|
| 164 | std::ostringstream os;
|
---|
| 165 |
|
---|
| 166 | if ( typeString != "" ) {
|
---|
| 167 | if ( typeString[0] == '*' ) {
|
---|
| 168 | os << "(" << typeString << ")";
|
---|
| 169 | } else {
|
---|
| 170 | os << typeString;
|
---|
| 171 | } // if
|
---|
| 172 | } // if
|
---|
| 173 |
|
---|
| 174 | /************* parameters ***************/
|
---|
| 175 | const std::list<DeclarationWithType *> &pars = funcType->parameters;
|
---|
| 176 |
|
---|
| 177 | if ( pars.empty() ) {
|
---|
| 178 | if ( funcType->get_isVarArgs() ) {
|
---|
| 179 | os << "()";
|
---|
| 180 | } else {
|
---|
| 181 | os << "(void)";
|
---|
| 182 | } // if
|
---|
| 183 | } else {
|
---|
| 184 | os << "(" ;
|
---|
| 185 |
|
---|
| 186 | unsigned int i = 0;
|
---|
| 187 | for (DeclarationWithType * p : pars) {
|
---|
| 188 | os << genDemangleType( p->get_type(), "" );
|
---|
| 189 | if (++i != pars.size()) os << ", ";
|
---|
| 190 | }
|
---|
| 191 |
|
---|
| 192 | if ( funcType->get_isVarArgs() ) {
|
---|
| 193 | os << ", ...";
|
---|
| 194 | } // if
|
---|
| 195 | os << ")";
|
---|
| 196 | } // if
|
---|
| 197 |
|
---|
| 198 | typeString = os.str();
|
---|
| 199 |
|
---|
| 200 | if ( funcType->returnVals.size() == 0 ) {
|
---|
| 201 | typeString += ": void";
|
---|
| 202 | } else {
|
---|
| 203 | typeString += ": " + genDemangleType(funcType->returnVals.front()->get_type(), "");
|
---|
| 204 | } // if
|
---|
| 205 |
|
---|
| 206 | // add forall
|
---|
| 207 | if( ! funcType->forall.empty() ) {
|
---|
| 208 | std::ostringstream os;
|
---|
| 209 | os << "forall(";
|
---|
| 210 | unsigned int i = 0;
|
---|
| 211 | for ( auto td : funcType->forall ) {
|
---|
| 212 | os << td->typeString() << " " << td->name;
|
---|
| 213 | if (! td->assertions.empty()) {
|
---|
| 214 | os << " | { ";
|
---|
| 215 | unsigned int j = 0;
|
---|
| 216 | for (DeclarationWithType * assert : td->assertions) {
|
---|
| 217 | os << genDemangleType(assert->get_type(), assert->name);
|
---|
| 218 | if (++j != td->assertions.size()) os << ", ";
|
---|
| 219 | }
|
---|
| 220 | os << "}";
|
---|
| 221 | }
|
---|
| 222 | if (++i != funcType->forall.size()) os << ", ";
|
---|
| 223 | }
|
---|
| 224 | os << ")";
|
---|
| 225 | typeString = typeString + " -> " + os.str();
|
---|
| 226 | }
|
---|
| 227 | }
|
---|
| 228 |
|
---|
| 229 | std::string GenType::handleGeneric( ReferenceToType * refType ) {
|
---|
| 230 | if ( ! refType->parameters.empty() ) {
|
---|
| 231 | std::ostringstream os;
|
---|
| 232 | // TODO: ???
|
---|
| 233 | // PassVisitor<CodeGenerator> cg( os, pretty, genC, lineMarks );
|
---|
| 234 | os << "(";
|
---|
| 235 | // cg.pass.genCommaList( refType->parameters.begin(), refType->parameters.end() );
|
---|
| 236 | os << ") ";
|
---|
| 237 | return os.str();
|
---|
| 238 | }
|
---|
| 239 | return "";
|
---|
| 240 | }
|
---|
| 241 |
|
---|
| 242 | void GenType::postvisit( StructInstType * structInst ) {
|
---|
| 243 | typeString = "struct " + structInst->name + handleGeneric( structInst ) + " " + typeString;
|
---|
| 244 | handleQualifiers( structInst );
|
---|
| 245 | }
|
---|
| 246 |
|
---|
| 247 | void GenType::postvisit( UnionInstType * unionInst ) {
|
---|
| 248 | typeString = "union " + unionInst->name + handleGeneric( unionInst ) + " " + typeString;
|
---|
| 249 | handleQualifiers( unionInst );
|
---|
| 250 | }
|
---|
| 251 |
|
---|
| 252 | void GenType::postvisit( EnumInstType * enumInst ) {
|
---|
| 253 | typeString = "enum " + enumInst->name + " " + typeString;
|
---|
| 254 | handleQualifiers( enumInst );
|
---|
| 255 | }
|
---|
| 256 |
|
---|
| 257 | void GenType::postvisit( TypeInstType * typeInst ) {
|
---|
| 258 | typeString = typeInst->name + " " + typeString;
|
---|
| 259 | handleQualifiers( typeInst );
|
---|
| 260 | }
|
---|
| 261 |
|
---|
| 262 | void GenType::postvisit( TupleType * tupleType ) {
|
---|
| 263 | unsigned int i = 0;
|
---|
| 264 | std::ostringstream os;
|
---|
| 265 | os << "[";
|
---|
| 266 | for ( Type * t : *tupleType ) {
|
---|
| 267 | i++;
|
---|
| 268 | os << genDemangleType( t, "" ) << (i == tupleType->size() ? "" : ", ");
|
---|
| 269 | }
|
---|
| 270 | os << "] ";
|
---|
| 271 | typeString = os.str() + typeString;
|
---|
| 272 | }
|
---|
| 273 |
|
---|
| 274 | void GenType::postvisit( VarArgsType * varArgsType ) {
|
---|
| 275 | typeString = "__builtin_va_list " + typeString;
|
---|
| 276 | handleQualifiers( varArgsType );
|
---|
| 277 | }
|
---|
| 278 |
|
---|
| 279 | void GenType::postvisit( ZeroType * zeroType ) {
|
---|
| 280 | // ideally these wouldn't hit codegen at all, but should be safe to make them ints
|
---|
| 281 | typeString = "zero_t " + typeString;
|
---|
| 282 | handleQualifiers( zeroType );
|
---|
| 283 | }
|
---|
| 284 |
|
---|
| 285 | void GenType::postvisit( OneType * oneType ) {
|
---|
| 286 | // ideally these wouldn't hit codegen at all, but should be safe to make them ints
|
---|
| 287 | typeString = "one_t " + typeString;
|
---|
| 288 | handleQualifiers( oneType );
|
---|
| 289 | }
|
---|
| 290 |
|
---|
| 291 | void GenType::postvisit( GlobalScopeType * globalType ) {
|
---|
| 292 | handleQualifiers( globalType );
|
---|
| 293 | }
|
---|
| 294 |
|
---|
| 295 | void GenType::postvisit( QualifiedType * qualType ) {
|
---|
| 296 | std::ostringstream os;
|
---|
| 297 | os << genDemangleType( qualType->parent, "" ) << "." << genDemangleType( qualType->child, "" ) << typeString;
|
---|
| 298 | typeString = os.str();
|
---|
| 299 | handleQualifiers( qualType );
|
---|
| 300 | }
|
---|
| 301 |
|
---|
| 302 | void GenType::handleQualifiers( Type * type ) {
|
---|
| 303 | if ( type->get_const() ) {
|
---|
| 304 | typeString = "const " + typeString;
|
---|
| 305 | } // if
|
---|
| 306 | if ( type->get_volatile() ) {
|
---|
| 307 | typeString = "volatile " + typeString;
|
---|
| 308 | } // if
|
---|
| 309 | if ( type->get_restrict() ) {
|
---|
| 310 | typeString = "__restrict " + typeString;
|
---|
| 311 | } // if
|
---|
| 312 | if ( type->get_atomic() ) {
|
---|
| 313 | typeString = "_Atomic " + typeString;
|
---|
| 314 | } // if
|
---|
| 315 | if ( type->get_lvalue() ) {
|
---|
| 316 | // when not generating C code, print lvalue for debugging.
|
---|
| 317 | typeString = "lvalue " + typeString;
|
---|
| 318 | }
|
---|
| 319 | }
|
---|
| 320 | }
|
---|
| 321 |
|
---|
| 322 |
|
---|
| 323 | namespace SymTab {
|
---|
| 324 | namespace Mangler {
|
---|
| 325 | namespace {
|
---|
[c20fafd] | 326 | struct StringView {
|
---|
| 327 | private:
|
---|
| 328 | std::string str;
|
---|
| 329 | size_t idx = 0;
|
---|
| 330 | // typedef Type * (StringView::*parser)(Type::Qualifiers);
|
---|
| 331 | typedef std::function<Type * (Type::Qualifiers)> parser;
|
---|
| 332 | std::vector<std::pair<std::string, parser>> parsers;
|
---|
| 333 | public:
|
---|
| 334 | StringView(const std::string & str);
|
---|
| 335 |
|
---|
| 336 | bool done() const { return idx >= str.size(); }
|
---|
| 337 | char cur() const { assert(! done()); return str[idx]; }
|
---|
| 338 |
|
---|
| 339 | bool expect(char ch) { return str[idx++] == ch; }
|
---|
| 340 | void next(size_t inc = 1) { idx += inc; }
|
---|
| 341 |
|
---|
| 342 | /// determines if `pref` is a prefix of `str`
|
---|
| 343 | bool isPrefix(const std::string & pref);
|
---|
| 344 | bool extractNumber(size_t & out);
|
---|
| 345 | bool extractName(std::string & out);
|
---|
| 346 | bool stripMangleName(std::string & name);
|
---|
| 347 |
|
---|
| 348 | Type * parseFunction(Type::Qualifiers tq);
|
---|
| 349 | Type * parseTuple(Type::Qualifiers tq);
|
---|
| 350 | Type * parseVoid(Type::Qualifiers tq);
|
---|
| 351 | Type * parsePointer(Type::Qualifiers tq);
|
---|
[2f9768f] | 352 | Type * parseArray(Type::Qualifiers tq);
|
---|
[c20fafd] | 353 | Type * parseStruct(Type::Qualifiers tq);
|
---|
[38587bc] | 354 | Type * parseUnion(Type::Qualifiers tq);
|
---|
| 355 | Type * parseEnum(Type::Qualifiers tq);
|
---|
[efa8b6a] | 356 | Type * parseType(Type::Qualifiers tq);
|
---|
[c20fafd] | 357 |
|
---|
| 358 | Type * parseType();
|
---|
| 359 | bool parse(std::string & name, Type *& type);
|
---|
| 360 | };
|
---|
| 361 |
|
---|
| 362 | StringView::StringView(const std::string & str) : str(str) {
|
---|
| 363 | // basic types
|
---|
| 364 | for (size_t k = 0; k < BasicType::NUMBER_OF_BASIC_TYPES; ++k) {
|
---|
[8316a49] | 365 | parsers.emplace_back(Encoding::basicTypes[k], [k](Type::Qualifiers tq) {
|
---|
[c20fafd] | 366 | PRINT( std::cerr << "basic type: " << k << std::endl; )
|
---|
| 367 | return new BasicType(tq, (BasicType::Kind)k);
|
---|
| 368 | });
|
---|
| 369 | }
|
---|
[04c77791] | 370 | // type variable types
|
---|
| 371 | for (size_t k = 0; k < TypeDecl::NUMBER_OF_KINDS; ++k) {
|
---|
[550e819] | 372 | static const std::string typeVariableNames[] = { "DT", "FT", "TT", };
|
---|
| 373 | static_assert(
|
---|
| 374 | sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == TypeDecl::NUMBER_OF_KINDS,
|
---|
| 375 | "Each type variable kind should have a demangle name prefix"
|
---|
| 376 | );
|
---|
[04c77791] | 377 | parsers.emplace_back(Encoding::typeVariables[k], [k, this](Type::Qualifiers tq) -> TypeInstType * {
|
---|
| 378 | PRINT( std::cerr << "type variable type: " << k << std::endl; )
|
---|
[550e819] | 379 | size_t N;
|
---|
| 380 | if (! extractNumber(N)) return nullptr;
|
---|
| 381 | return new TypeInstType(tq, toString(typeVariableNames[k], N), (TypeDecl::Kind)k != TypeDecl::Ftype);
|
---|
[04c77791] | 382 | });
|
---|
| 383 | }
|
---|
[c20fafd] | 384 | // everything else
|
---|
| 385 | parsers.emplace_back(Encoding::void_t, [this](Type::Qualifiers tq) { return parseVoid(tq); });
|
---|
| 386 | parsers.emplace_back(Encoding::function, [this](Type::Qualifiers tq) { return parseFunction(tq); });
|
---|
| 387 | parsers.emplace_back(Encoding::pointer, [this](Type::Qualifiers tq) { return parsePointer(tq); });
|
---|
[2f9768f] | 388 | parsers.emplace_back(Encoding::array, [this](Type::Qualifiers tq) { return parseArray(tq); });
|
---|
[c20fafd] | 389 | parsers.emplace_back(Encoding::tuple, [this](Type::Qualifiers tq) { return parseTuple(tq); });
|
---|
| 390 | parsers.emplace_back(Encoding::struct_t, [this](Type::Qualifiers tq) { return parseStruct(tq); });
|
---|
[38587bc] | 391 | parsers.emplace_back(Encoding::union_t, [this](Type::Qualifiers tq) { return parseUnion(tq); });
|
---|
| 392 | parsers.emplace_back(Encoding::enum_t, [this](Type::Qualifiers tq) { return parseEnum(tq); });
|
---|
[efa8b6a] | 393 | parsers.emplace_back(Encoding::type, [this](Type::Qualifiers tq) { return parseType(tq); });
|
---|
[56b53b2] | 394 | parsers.emplace_back(Encoding::zero, [](Type::Qualifiers tq) { return new ZeroType(tq); });
|
---|
| 395 | parsers.emplace_back(Encoding::one, [](Type::Qualifiers tq) { return new OneType(tq); });
|
---|
[c20fafd] | 396 | }
|
---|
| 397 |
|
---|
| 398 | bool StringView::extractNumber(size_t & out) {
|
---|
| 399 | std::stringstream numss;
|
---|
[efa8b6a] | 400 | if (idx >= str.size()) return false;
|
---|
[c20fafd] | 401 | while (isdigit(str[idx])) {
|
---|
| 402 | numss << str[idx];
|
---|
| 403 | ++idx;
|
---|
[efa8b6a] | 404 | if (idx == str.size()) break;
|
---|
[c20fafd] | 405 | }
|
---|
| 406 | if (! (numss >> out)) return false;
|
---|
[efa8b6a] | 407 | PRINT( std::cerr << "extractNumber success: " << out << std::endl; )
|
---|
[c20fafd] | 408 | return true;
|
---|
| 409 | }
|
---|
| 410 |
|
---|
| 411 | bool StringView::extractName(std::string & out) {
|
---|
| 412 | size_t len;
|
---|
| 413 | if (! extractNumber(len)) return false;
|
---|
[efa8b6a] | 414 | if (idx+len > str.size()) return false;
|
---|
[c20fafd] | 415 | out = str.substr(idx, len);
|
---|
| 416 | idx += len;
|
---|
[efa8b6a] | 417 | PRINT( std::cerr << "extractName success: " << out << std::endl; )
|
---|
[c20fafd] | 418 | return true;
|
---|
| 419 | }
|
---|
| 420 |
|
---|
| 421 | bool StringView::isPrefix(const std::string & pref) {
|
---|
| 422 | if ( pref.size() > str.size()-idx ) return false;
|
---|
| 423 | auto its = std::mismatch( pref.begin(), pref.end(), std::next(str.begin(), idx) );
|
---|
| 424 | if (its.first == pref.end()) {
|
---|
| 425 | idx += pref.size();
|
---|
| 426 | return true;
|
---|
| 427 | }
|
---|
| 428 | return false;
|
---|
| 429 | }
|
---|
| 430 |
|
---|
[d1e0979] | 431 | // strips __NAME__cfa__TYPE_N, where N is [0-9]+: returns str is a match is found, returns empty string otherwise
|
---|
[c20fafd] | 432 | bool StringView::stripMangleName(std::string & name) {
|
---|
| 433 | PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; )
|
---|
| 434 | if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix
|
---|
| 435 | if (! isPrefix(Encoding::manglePrefix) || ! isdigit(str.back())) return false;
|
---|
[d1e0979] | 436 |
|
---|
[c20fafd] | 437 | // get name
|
---|
| 438 | if (! extractName(name)) return false;
|
---|
[d1e0979] | 439 |
|
---|
| 440 | // find bounds for type
|
---|
[c20fafd] | 441 | PRINT( std::cerr << idx << " " << str.size() << std::endl; )
|
---|
[d1e0979] | 442 | PRINT( std::cerr << "[");
|
---|
[c20fafd] | 443 | while (isdigit(str.back())) {
|
---|
[d1e0979] | 444 | PRINT(std::cerr << ".");
|
---|
[c20fafd] | 445 | str.pop_back();
|
---|
| 446 | if (str.size() <= idx) return false;
|
---|
[d1e0979] | 447 | }
|
---|
| 448 | PRINT( std::cerr << "]" << std::endl );
|
---|
[c20fafd] | 449 | if (str.back() != '_') return false;
|
---|
| 450 | str.pop_back();
|
---|
| 451 | PRINT( std::cerr << str.size() << " " << name << " " << str.substr(idx) << std::endl; )
|
---|
| 452 | return str.size() > idx;
|
---|
| 453 | }
|
---|
[d1e0979] | 454 |
|
---|
[c20fafd] | 455 | Type * StringView::parseFunction(Type::Qualifiers tq) {
|
---|
| 456 | PRINT( std::cerr << "function..." << std::endl; )
|
---|
| 457 | if (done()) return nullptr;
|
---|
| 458 | FunctionType * ftype = new FunctionType( tq, false );
|
---|
[d7d63e5] | 459 | std::unique_ptr<Type> manager(ftype);
|
---|
[c20fafd] | 460 | Type * retVal = parseType();
|
---|
| 461 | if (! retVal) return nullptr;
|
---|
| 462 | PRINT( std::cerr << "with return type: " << retVal << std::endl; )
|
---|
| 463 | ftype->returnVals.push_back(ObjectDecl::newObject("", retVal, nullptr));
|
---|
| 464 | if (done() || ! expect('_')) return nullptr;
|
---|
| 465 | while (! done()) {
|
---|
| 466 | PRINT( std::cerr << "got ch: " << cur() << std::endl; )
|
---|
[d7d63e5] | 467 | if (cur() == '_') return manager.release();
|
---|
[c20fafd] | 468 | Type * param = parseType();
|
---|
| 469 | if (! param) return nullptr;
|
---|
| 470 | PRINT( std::cerr << "with parameter : " << param << std::endl; )
|
---|
| 471 | ftype->parameters.push_back(ObjectDecl::newObject("", param, nullptr));
|
---|
| 472 | }
|
---|
| 473 | return nullptr;
|
---|
[d1e0979] | 474 | }
|
---|
| 475 |
|
---|
[c20fafd] | 476 | Type * StringView::parseTuple(Type::Qualifiers tq) {
|
---|
| 477 | PRINT( std::cerr << "tuple..." << std::endl; )
|
---|
| 478 | std::list< Type * > types;
|
---|
| 479 | size_t ncomponents;
|
---|
| 480 | if (! extractNumber(ncomponents)) return nullptr;
|
---|
| 481 | for (size_t i = 0; i < ncomponents; ++i) {
|
---|
[d7d63e5] | 482 | // TODO: delete all on return
|
---|
[c20fafd] | 483 | if (done()) return nullptr;
|
---|
| 484 | PRINT( std::cerr << "got ch: " << cur() << std::endl; )
|
---|
| 485 | Type * t = parseType();
|
---|
| 486 | if (! t) return nullptr;
|
---|
| 487 | PRINT( std::cerr << "with type : " << t << std::endl; )
|
---|
| 488 | types.push_back(t);
|
---|
| 489 | }
|
---|
| 490 | return new TupleType( tq, types );
|
---|
[d1e0979] | 491 | }
|
---|
| 492 |
|
---|
[c20fafd] | 493 | Type * StringView::parseVoid(Type::Qualifiers tq) {
|
---|
| 494 | return new VoidType( tq );
|
---|
| 495 | }
|
---|
| 496 |
|
---|
| 497 | Type * StringView::parsePointer(Type::Qualifiers tq) {
|
---|
| 498 | PRINT( std::cerr << "pointer..." << std::endl; )
|
---|
| 499 | Type * t = parseType();
|
---|
| 500 | if (! t) return nullptr;
|
---|
| 501 | return new PointerType( tq, t );
|
---|
| 502 | }
|
---|
| 503 |
|
---|
[2f9768f] | 504 | Type * StringView::parseArray(Type::Qualifiers tq) {
|
---|
| 505 | PRINT( std::cerr << "array..." << std::endl; )
|
---|
| 506 | size_t length;
|
---|
| 507 | if (! extractNumber(length)) return nullptr;
|
---|
| 508 | Type * t = parseType();
|
---|
| 509 | if (! t) return nullptr;
|
---|
| 510 | return new ArrayType( tq, t, new ConstantExpr( Constant::from_ulong(length) ), false, false );
|
---|
| 511 | }
|
---|
| 512 |
|
---|
[c20fafd] | 513 | Type * StringView::parseStruct(Type::Qualifiers tq) {
|
---|
| 514 | PRINT( std::cerr << "struct..." << std::endl; )
|
---|
| 515 | std::string name;
|
---|
| 516 | if (! extractName(name)) return nullptr;
|
---|
| 517 | return new StructInstType(tq, name);
|
---|
| 518 | }
|
---|
| 519 |
|
---|
[38587bc] | 520 | Type * StringView::parseUnion(Type::Qualifiers tq) {
|
---|
| 521 | PRINT( std::cerr << "union..." << std::endl; )
|
---|
| 522 | std::string name;
|
---|
| 523 | if (! extractName(name)) return nullptr;
|
---|
| 524 | return new UnionInstType(tq, name);
|
---|
| 525 | }
|
---|
| 526 |
|
---|
| 527 | Type * StringView::parseEnum(Type::Qualifiers tq) {
|
---|
| 528 | PRINT( std::cerr << "enum..." << std::endl; )
|
---|
| 529 | std::string name;
|
---|
| 530 | if (! extractName(name)) return nullptr;
|
---|
| 531 | return new EnumInstType(tq, name);
|
---|
| 532 | }
|
---|
| 533 |
|
---|
[efa8b6a] | 534 | Type * StringView::parseType(Type::Qualifiers tq) {
|
---|
| 535 | PRINT( std::cerr << "type..." << std::endl; )
|
---|
| 536 | std::string name;
|
---|
| 537 | if (! extractName(name)) return nullptr;
|
---|
| 538 | PRINT( std::cerr << "typename..." << name << std::endl; )
|
---|
| 539 | return new TypeInstType(tq, name, false);
|
---|
| 540 | }
|
---|
| 541 |
|
---|
[c20fafd] | 542 | Type * StringView::parseType() {
|
---|
| 543 | if (done()) return nullptr;
|
---|
[d1e0979] | 544 |
|
---|
[04c77791] | 545 | std::list<TypeDecl *> forall;
|
---|
| 546 | if (isPrefix(Encoding::forall)) {
|
---|
| 547 | PRINT( std::cerr << "polymorphic with..." << std::endl; )
|
---|
| 548 | size_t dcount, fcount, vcount, acount;
|
---|
| 549 | if (! extractNumber(dcount)) return nullptr;
|
---|
| 550 | PRINT( std::cerr << dcount << " dtypes" << std::endl; )
|
---|
| 551 | if (! expect('_')) return nullptr;
|
---|
| 552 | if (! extractNumber(fcount)) return nullptr;
|
---|
| 553 | PRINT( std::cerr << fcount << " ftypes" << std::endl; )
|
---|
| 554 | if (! expect('_')) return nullptr;
|
---|
| 555 | if (! extractNumber(vcount)) return nullptr;
|
---|
| 556 | PRINT( std::cerr << vcount << " ttypes" << std::endl; )
|
---|
| 557 | if (! expect('_')) return nullptr;
|
---|
| 558 | if (! extractNumber(acount)) return nullptr;
|
---|
| 559 | PRINT( std::cerr << acount << " assertions" << std::endl; )
|
---|
| 560 | if (! expect('_')) return nullptr;
|
---|
[550e819] | 561 | for (size_t i = 0; i < acount; ++i) {
|
---|
| 562 | // TODO: need to recursively parse assertions, but for now just return nullptr so that
|
---|
| 563 | // demangler does not crash if there are assertions
|
---|
| 564 | return nullptr;
|
---|
| 565 | }
|
---|
[04c77791] | 566 | if (! expect('_')) return nullptr;
|
---|
| 567 | }
|
---|
| 568 |
|
---|
[d1e0979] | 569 | // qualifiers
|
---|
| 570 | Type::Qualifiers tq;
|
---|
| 571 | while (true) {
|
---|
[c20fafd] | 572 | auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) {
|
---|
| 573 | return isPrefix(val.second);
|
---|
[d1e0979] | 574 | });
|
---|
[c20fafd] | 575 | if (qual == Encoding::qualifiers.end()) break;
|
---|
[d1e0979] | 576 | tq |= qual->first;
|
---|
| 577 | }
|
---|
| 578 |
|
---|
[c20fafd] | 579 | // find the correct type parser and use it
|
---|
| 580 | auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, parser> & p) {
|
---|
| 581 | return isPrefix(p.first);
|
---|
[d1e0979] | 582 | });
|
---|
[c20fafd] | 583 | assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), idx);
|
---|
[04c77791] | 584 | Type * ret = iter->second(tq);
|
---|
| 585 | if (! ret) return nullptr;
|
---|
| 586 | ret->forall = std::move(forall);
|
---|
| 587 | return ret;
|
---|
[d1e0979] | 588 | }
|
---|
| 589 |
|
---|
[c20fafd] | 590 | bool StringView::parse(std::string & name, Type *& type) {
|
---|
| 591 | if (! stripMangleName(name)) return false;
|
---|
| 592 | PRINT( std::cerr << "stripped name: " << name << std::endl; )
|
---|
| 593 | Type * t = parseType();
|
---|
| 594 | if (! t) return false;
|
---|
| 595 | type = t;
|
---|
| 596 | return true;
|
---|
[d1e0979] | 597 | }
|
---|
[f47d0ad] | 598 |
|
---|
| 599 | std::string demangle(const std::string & mangleName) {
|
---|
| 600 | SymTab::Mangler::StringView view(mangleName);
|
---|
| 601 | std::string name;
|
---|
| 602 | Type * type = nullptr;
|
---|
| 603 | if (! view.parse(name, type)) return mangleName;
|
---|
[d7d63e5] | 604 | std::unique_ptr<Type> manager(type);
|
---|
[f47d0ad] | 605 | return genDemangleType(type, name);
|
---|
| 606 | }
|
---|
[d1e0979] | 607 | } // namespace
|
---|
| 608 | } // namespace Mangler
|
---|
| 609 | } // namespace SymTab
|
---|
| 610 |
|
---|
| 611 | extern "C" {
|
---|
[90cac45] | 612 | char * cforall_demangle(const char * mangleName, int option __attribute__((unused))) {
|
---|
[f47d0ad] | 613 | const std::string & demangleName = SymTab::Mangler::demangle(mangleName);
|
---|
| 614 | return strdup(demangleName.c_str());
|
---|
| 615 | }
|
---|
[d1e0979] | 616 | }
|
---|
| 617 |
|
---|
| 618 | // Local Variables: //
|
---|
| 619 | // tab-width: 4 //
|
---|
| 620 | // mode: c++ //
|
---|
| 621 | // compile-command: "make install" //
|
---|
| 622 | // End: //
|
---|