Ignore:
Timestamp:
Jun 23, 2019, 4:03:12 PM (5 years ago)
Author:
Peter A. Buhr <pabuhr@…>
Branches:
ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, pthread-emulation, qualifiedEnum
Children:
8f079f0
Parents:
fe065c3 (diff), 8d61d620 (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.
Message:

Merge branch 'master' of plg.uwaterloo.ca:software/cfa/cfa-cc

File:
1 edited

Legend:

Unmodified
Added
Removed
  • src/SymTab/Validate.cc

    rfe065c3 rf2f22e3  
    4646#include <utility>                     // for pair
    4747
     48#include "AST/Decl.hpp"
     49#include "AST/Node.hpp"
     50#include "AST/Pass.hpp"
     51#include "AST/SymbolTable.hpp"
     52#include "AST/Type.hpp"
    4853#include "CodeGen/CodeGenerator.h"     // for genName
    4954#include "CodeGen/OperatorTable.h"     // for isCtorDtor, isCtorDtorAssign
     
    124129
    125130        /// Replaces enum types by int, and function or array types in function parameter and return lists by appropriate pointers.
    126         struct EnumAndPointerDecay {
     131        struct EnumAndPointerDecay_old {
    127132                void previsit( EnumDecl *aggregateDecl );
    128133                void previsit( FunctionType *func );
     
    130135
    131136        /// Associates forward declarations of aggregates with their definitions
    132         struct LinkReferenceToTypes final : public WithIndexer, public WithGuards, public WithVisitorRef<LinkReferenceToTypes>, public WithShortCircuiting {
    133                 LinkReferenceToTypes( const Indexer *indexer );
     137        struct LinkReferenceToTypes_old final : public WithIndexer, public WithGuards, public WithVisitorRef<LinkReferenceToTypes_old>, public WithShortCircuiting {
     138                LinkReferenceToTypes_old( const Indexer *indexer );
    134139                void postvisit( TypeInstType *typeInst );
    135140
     
    165170
    166171        /// Replaces array and function types in forall lists by appropriate pointer type and assigns each Object and Function declaration a unique ID.
    167         struct ForallPointerDecay final {
     172        struct ForallPointerDecay_old final {
    168173                void previsit( ObjectDecl * object );
    169174                void previsit( FunctionDecl * func );
     
    290295
    291296        void validate( std::list< Declaration * > &translationUnit, __attribute__((unused)) bool doDebug ) {
    292                 PassVisitor<EnumAndPointerDecay> epc;
    293                 PassVisitor<LinkReferenceToTypes> lrt( nullptr );
    294                 PassVisitor<ForallPointerDecay> fpd;
     297                PassVisitor<EnumAndPointerDecay_old> epc;
     298                PassVisitor<LinkReferenceToTypes_old> lrt( nullptr );
     299                PassVisitor<ForallPointerDecay_old> fpd;
    295300                PassVisitor<CompoundLiteral> compoundliteral;
    296301                PassVisitor<ValidateGenericParameters> genericParams;
     
    305310                        ReplaceTypedef::replaceTypedef( translationUnit );
    306311                        ReturnTypeFixer::fix( translationUnit ); // must happen before autogen
    307                         acceptAll( translationUnit, epc ); // must happen before VerifyCtorDtorAssign, because void return objects should not exist; before LinkReferenceToTypes because it is an indexer and needs correct types for mangling
     312                        acceptAll( translationUnit, epc ); // must happen before VerifyCtorDtorAssign, because void return objects should not exist; before LinkReferenceToTypes_old because it is an indexer and needs correct types for mangling
    308313                }
    309314                {
     
    314319                        });
    315320                        Stats::Time::TimeBlock("Fix Qualified Types", [&]() {
    316                                 mutateAll( translationUnit, fixQual ); // must happen after LinkReferenceToTypes, because aggregate members are accessed
     321                                mutateAll( translationUnit, fixQual ); // must happen after LinkReferenceToTypes_old, because aggregate members are accessed
    317322                        });
    318323                        Stats::Time::TimeBlock("Hoist Structs", [&]() {
     
    326331                        Stats::Heap::newPass("validate-C");
    327332                        Stats::Time::BlockGuard guard("validate-C");
    328                         acceptAll( translationUnit, genericParams );  // check as early as possible - can't happen before LinkReferenceToTypes
     333                        acceptAll( translationUnit, genericParams );  // check as early as possible - can't happen before LinkReferenceToTypes_old
    329334                        VerifyCtorDtorAssign::verify( translationUnit );  // must happen before autogen, because autogen examines existing ctor/dtors
    330335                        ReturnChecker::checkFunctionReturns( translationUnit );
     
    344349                        });
    345350                        Stats::Time::TimeBlock("Generate Autogen routines", [&]() {
    346                                 autogenerateRoutines( translationUnit ); // moved up, used to be below compoundLiteral - currently needs EnumAndPointerDecay
     351                                autogenerateRoutines( translationUnit ); // moved up, used to be below compoundLiteral - currently needs EnumAndPointerDecay_old
    347352                        });
    348353                }
     
    385390
    386391        void validateType( Type *type, const Indexer *indexer ) {
    387                 PassVisitor<EnumAndPointerDecay> epc;
    388                 PassVisitor<LinkReferenceToTypes> lrt( indexer );
    389                 PassVisitor<ForallPointerDecay> fpd;
     392                PassVisitor<EnumAndPointerDecay_old> epc;
     393                PassVisitor<LinkReferenceToTypes_old> lrt( indexer );
     394                PassVisitor<ForallPointerDecay_old> fpd;
    390395                type->accept( epc );
    391396                type->accept( lrt );
     
    586591        }
    587592
    588         void EnumAndPointerDecay::previsit( EnumDecl *enumDecl ) {
     593        void EnumAndPointerDecay_old::previsit( EnumDecl *enumDecl ) {
    589594                // Set the type of each member of the enumeration to be EnumConstant
    590595                for ( std::list< Declaration * >::iterator i = enumDecl->members.begin(); i != enumDecl->members.end(); ++i ) {
     
    618623        }
    619624
    620         void EnumAndPointerDecay::previsit( FunctionType *func ) {
     625        void EnumAndPointerDecay_old::previsit( FunctionType *func ) {
    621626                // Fix up parameters and return types
    622627                fixFunctionList( func->parameters, func->isVarArgs, func );
     
    624629        }
    625630
    626         LinkReferenceToTypes::LinkReferenceToTypes( const Indexer *other_indexer ) {
     631        LinkReferenceToTypes_old::LinkReferenceToTypes_old( const Indexer *other_indexer ) {
    627632                if ( other_indexer ) {
    628633                        local_indexer = other_indexer;
     
    632637        }
    633638
    634         void LinkReferenceToTypes::postvisit( EnumInstType *enumInst ) {
     639        void LinkReferenceToTypes_old::postvisit( EnumInstType *enumInst ) {
    635640                EnumDecl *st = local_indexer->lookupEnum( enumInst->name );
    636641                // it's not a semantic error if the enum is not found, just an implicit forward declaration
     
    652657        }
    653658
    654         void LinkReferenceToTypes::postvisit( StructInstType *structInst ) {
     659        void LinkReferenceToTypes_old::postvisit( StructInstType *structInst ) {
    655660                StructDecl *st = local_indexer->lookupStruct( structInst->name );
    656661                // it's not a semantic error if the struct is not found, just an implicit forward declaration
     
    665670        }
    666671
    667         void LinkReferenceToTypes::postvisit( UnionInstType *unionInst ) {
     672        void LinkReferenceToTypes_old::postvisit( UnionInstType *unionInst ) {
    668673                UnionDecl *un = local_indexer->lookupUnion( unionInst->name );
    669674                // it's not a semantic error if the union is not found, just an implicit forward declaration
     
    678683        }
    679684
    680         void LinkReferenceToTypes::previsit( QualifiedType * ) {
     685        void LinkReferenceToTypes_old::previsit( QualifiedType * ) {
    681686                visit_children = false;
    682687        }
    683688
    684         void LinkReferenceToTypes::postvisit( QualifiedType * qualType ) {
     689        void LinkReferenceToTypes_old::postvisit( QualifiedType * qualType ) {
    685690                // linking only makes sense for the 'oldest ancestor' of the qualified type
    686691                qualType->parent->accept( *visitor );
     
    729734        }
    730735
    731         void LinkReferenceToTypes::postvisit( TraitDecl * traitDecl ) {
     736        void LinkReferenceToTypes_old::postvisit( TraitDecl * traitDecl ) {
    732737                if ( traitDecl->name == "sized" ) {
    733738                        // "sized" is a special trait - flick the sized status on for the type variable
     
    751756        }
    752757
    753         void LinkReferenceToTypes::postvisit( TraitInstType * traitInst ) {
     758        void LinkReferenceToTypes_old::postvisit( TraitInstType * traitInst ) {
    754759                // handle other traits
    755760                TraitDecl *traitDecl = local_indexer->lookupTrait( traitInst->name );
     
    777782        }
    778783
    779         void LinkReferenceToTypes::postvisit( EnumDecl *enumDecl ) {
     784        void LinkReferenceToTypes_old::postvisit( EnumDecl *enumDecl ) {
    780785                // visit enum members first so that the types of self-referencing members are updated properly
    781786                if ( enumDecl->body ) {
     
    799804        }
    800805
    801         void LinkReferenceToTypes::renameGenericParams( std::list< TypeDecl * > & params ) {
     806        void LinkReferenceToTypes_old::renameGenericParams( std::list< TypeDecl * > & params ) {
    802807                // rename generic type parameters uniquely so that they do not conflict with user-defined function forall parameters, e.g.
    803808                //   forall(otype T)
     
    817822        }
    818823
    819         void LinkReferenceToTypes::previsit( StructDecl * structDecl ) {
     824        void LinkReferenceToTypes_old::previsit( StructDecl * structDecl ) {
    820825                renameGenericParams( structDecl->parameters );
    821826        }
    822827
    823         void LinkReferenceToTypes::previsit( UnionDecl * unionDecl ) {
     828        void LinkReferenceToTypes_old::previsit( UnionDecl * unionDecl ) {
    824829                renameGenericParams( unionDecl->parameters );
    825830        }
    826831
    827         void LinkReferenceToTypes::postvisit( StructDecl *structDecl ) {
     832        void LinkReferenceToTypes_old::postvisit( StructDecl *structDecl ) {
    828833                // visit struct members first so that the types of self-referencing members are updated properly
    829834                // xxx - need to ensure that type parameters match up between forward declarations and definition (most importantly, number of type parameters and their defaults)
     
    839844        }
    840845
    841         void LinkReferenceToTypes::postvisit( UnionDecl *unionDecl ) {
     846        void LinkReferenceToTypes_old::postvisit( UnionDecl *unionDecl ) {
    842847                if ( unionDecl->body ) {
    843848                        ForwardUnionsType::iterator fwds = forwardUnions.find( unionDecl->name );
     
    851856        }
    852857
    853         void LinkReferenceToTypes::postvisit( TypeInstType *typeInst ) {
     858        void LinkReferenceToTypes_old::postvisit( TypeInstType *typeInst ) {
    854859                // ensure generic parameter instances are renamed like the base type
    855860                if ( inGeneric && typeInst->baseType ) typeInst->name = typeInst->baseType->name;
     
    888893        }
    889894
    890         void ForallPointerDecay::previsit( ObjectDecl *object ) {
     895        void ForallPointerDecay_old::previsit( ObjectDecl *object ) {
    891896                // ensure that operator names only apply to functions or function pointers
    892897                if ( CodeGen::isOperator( object->name ) && ! dynamic_cast< FunctionType * >( object->type->stripDeclarator() ) ) {
     
    896901        }
    897902
    898         void ForallPointerDecay::previsit( FunctionDecl *func ) {
     903        void ForallPointerDecay_old::previsit( FunctionDecl *func ) {
    899904                func->fixUniqueId();
    900905        }
    901906
    902         void ForallPointerDecay::previsit( FunctionType * ftype ) {
     907        void ForallPointerDecay_old::previsit( FunctionType * ftype ) {
    903908                forallFixer( ftype->forall, ftype );
    904909        }
    905910
    906         void ForallPointerDecay::previsit( StructDecl * aggrDecl ) {
     911        void ForallPointerDecay_old::previsit( StructDecl * aggrDecl ) {
    907912                forallFixer( aggrDecl->parameters, aggrDecl );
    908913        }
    909914
    910         void ForallPointerDecay::previsit( UnionDecl * aggrDecl ) {
     915        void ForallPointerDecay_old::previsit( UnionDecl * aggrDecl ) {
    911916                forallFixer( aggrDecl->parameters, aggrDecl );
    912917        }
     
    13681373        }
    13691374
    1370         const ast::Type * validateType( const ast::Type * type, const ast::SymbolTable & symtab ) {
    1371                 #warning unimplemented
    1372                 (void)type; (void)symtab;
    1373                 assert(false);
    1374                 return nullptr;
    1375         }
     1375namespace {
     1376        /// Replaces enum types by int, and function/array types in function parameter and return
     1377        /// lists by appropriate pointers
     1378        struct EnumAndPointerDecay_new {
     1379                const ast::EnumDecl * previsit( const ast::EnumDecl * enumDecl ) {
     1380                        // set the type of each member of the enumeration to be EnumConstant
     1381                        for ( unsigned i = 0; i < enumDecl->members.size(); ++i ) {
     1382                                // build new version of object with EnumConstant
     1383                                ast::ptr< ast::ObjectDecl > obj =
     1384                                        enumDecl->members[i].strict_as< ast::ObjectDecl >();
     1385                                obj.get_and_mutate()->type =
     1386                                        new ast::EnumInstType{ enumDecl->name, ast::CV::Const };
     1387                               
     1388                                // set into decl
     1389                                ast::EnumDecl * mut = mutate( enumDecl );
     1390                                mut->members[i] = obj.get();
     1391                                enumDecl = mut;
     1392                        }
     1393                        return enumDecl;
     1394                }
     1395
     1396                static const ast::FunctionType * fixFunctionList(
     1397                        const ast::FunctionType * func,
     1398                        std::vector< ast::ptr< ast::DeclWithType > > ast::FunctionType::* field,
     1399                        ast::ArgumentFlag isVarArgs = ast::FixedArgs
     1400                ) {
     1401                        const auto & dwts = func->*field;
     1402                        unsigned nvals = dwts.size();
     1403                        bool hasVoid = false;
     1404                        for ( unsigned i = 0; i < nvals; ++i ) {
     1405                                func = ast::mutate_field_index( func, field, i, fixFunction( dwts[i], hasVoid ) );
     1406                        }
     1407                       
     1408                        // the only case in which "void" is valid is where it is the only one in the list
     1409                        if ( hasVoid && ( nvals > 1 || isVarArgs ) ) {
     1410                                SemanticError(
     1411                                        dwts.front()->location, func, "invalid type void in function type" );
     1412                        }
     1413
     1414                        // one void is the only thing in the list, remove it
     1415                        if ( hasVoid ) {
     1416                                func = ast::mutate_field(
     1417                                        func, field, std::vector< ast::ptr< ast::DeclWithType > >{} );
     1418                        }
     1419
     1420                        return func;
     1421                }
     1422
     1423                const ast::FunctionType * previsit( const ast::FunctionType * func ) {
     1424                        func = fixFunctionList( func, &ast::FunctionType::params, func->isVarArgs );
     1425                        return fixFunctionList( func, &ast::FunctionType::returns );
     1426                }
     1427        };
     1428
     1429        /// Associates forward declarations of aggregates with their definitions
     1430        struct LinkReferenceToTypes_new final
     1431        : public ast::WithSymbolTable, public ast::WithGuards, public
     1432          ast::WithVisitorRef<LinkReferenceToTypes_new>, public ast::WithShortCircuiting {
     1433               
     1434                const ast::SymbolTable * localSyms;
     1435
     1436                LinkReferenceToTypes_new( const ast::SymbolTable & syms ) : localSyms( &syms ) {}
     1437
     1438                #warning incomplete
     1439        };
     1440
     1441        /// Replaces array and function types in forall lists by appropriate pointer type and assigns
     1442        /// each object and function declaration a unique ID
     1443        struct ForallPointerDecay_new {
     1444                #warning incomplete
     1445        };
     1446} // anonymous namespace
     1447
     1448const ast::Type * validateType( const ast::Type * type, const ast::SymbolTable & symtab ) {
     1449        ast::Pass< EnumAndPointerDecay_new > epc;
     1450        ast::Pass< LinkReferenceToTypes_new > lrt{ symtab };
     1451        ast::Pass< ForallPointerDecay_new > fpd;
     1452
     1453        return type->accept( epc )->accept( lrt )->accept( fpd );
     1454}
     1455
    13761456} // namespace SymTab
    13771457
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