Changes in src/SymTab/Validate.cc [d24d4e1:c6d2e93]

File:

• src/SymTab/Validate.cc (modified) (20 diffs)

src/SymTab/Validate.cc

@@ -106 +106 @@
 
         /// Fix return types so that every function returns exactly one value
-        struct ReturnTypeFixer {
+        class ReturnTypeFixer {
+          public:
                 static void fix( std::list< Declaration * > &translationUnit );
 
@@ -114 +115 @@
 
         /// Replaces enum types by int, and function or array types in function parameter and return lists by appropriate pointers.
-        struct EnumAndPointerDecay {
-                void previsit( EnumDecl *aggregateDecl );
-                void previsit( FunctionType *func );
+        class EnumAndPointerDecayPass final : public Visitor {
+                typedef Visitor Parent;
+                virtual void visit( EnumDecl *aggregateDecl );
+                virtual void visit( FunctionType *func );
         };
 
@@ -124 +126 @@
           public:
                 LinkReferenceToTypes( bool doDebug, const Indexer *indexer );
+          private:
                 using Parent::visit;
                 void visit( EnumInstType *enumInst ) final;
@@ -133 +136 @@
                 void visit( UnionDecl *unionDecl ) final;
                 void visit( TypeInstType *typeInst ) final;
-          private:
+
                 const Indexer *indexer;
 
@@ -144 +147 @@
         };
 
-        /// Replaces array and function types in forall lists by appropriate pointer type and assigns each Object and Function declaration a unique ID.
-        class ForallPointerDecay final : public Indexer {
+        /// Replaces array and function types in forall lists by appropriate pointer type
+        class Pass3 final : public Indexer {
                 typedef Indexer Parent;
           public:
                 using Parent::visit;
-                ForallPointerDecay( const Indexer *indexer );
-
+                Pass3( const Indexer *indexer );
+          private:
                 virtual void visit( ObjectDecl *object ) override;
                 virtual void visit( FunctionDecl *func ) override;
@@ -157 +160 @@
         };
 
-        struct ReturnChecker : public WithGuards {
+        class ReturnChecker {
+          public:
                 /// Checks that return statements return nothing if their return type is void
                 /// and return something if the return type is non-void.
                 static void checkFunctionReturns( std::list< Declaration * > & translationUnit );
-
+          private:
                 void previsit( FunctionDecl * functionDecl );
+                void postvisit( FunctionDecl * functionDecl );
                 void previsit( ReturnStmt * returnStmt );
 
                 typedef std::list< DeclarationWithType * > ReturnVals;
                 ReturnVals returnVals;
+                std::stack< ReturnVals > returnValsStack;
         };
 
@@ -202 +208 @@
         };
 
-        struct VerifyCtorDtorAssign {
+        class VerifyCtorDtorAssign {
+        public:
                 /// ensure that constructors, destructors, and assignment have at least one
                 /// parameter, the first of which must be a pointer, and that ctor/dtors have no
@@ -212 +219 @@
 
         /// ensure that generic types have the correct number of type arguments
-        struct ValidateGenericParameters {
+        class ValidateGenericParameters {
+        public:
                 void previsit( StructInstType * inst );
                 void previsit( UnionInstType * inst );
         };
 
-        struct ArrayLength {
+        class ArrayLength {
+        public:
                 /// for array types without an explicit length, compute the length and store it so that it
                 /// is known to the rest of the phases. For example,
@@ -230 +239 @@
         };
 
-        struct CompoundLiteral final : public WithDeclsToAdd, public WithVisitorRef<CompoundLiteral> {
+        class CompoundLiteral final : public GenPoly::DeclMutator {
                 Type::StorageClasses storageClasses;
 
-                void premutate( ObjectDecl *objectDecl );
-                Expression * postmutate( CompoundLiteralExpr *compLitExpr );
+                using GenPoly::DeclMutator::mutate;
+                DeclarationWithType * mutate( ObjectDecl *objectDecl ) final;
+                Expression *mutate( CompoundLiteralExpr *compLitExpr ) final;
         };
 
         void validate( std::list< Declaration * > &translationUnit, bool doDebug ) {
-                PassVisitor<EnumAndPointerDecay> epc;
+                EnumAndPointerDecayPass epc;
                 LinkReferenceToTypes lrt( doDebug, 0 );
-                ForallPointerDecay fpd( 0 );
-                PassVisitor<CompoundLiteral> compoundliteral;
+                Pass3 pass3( 0 );
+                CompoundLiteral compoundliteral;
                 PassVisitor<ValidateGenericParameters> genericParams;
 
@@ -252 +262 @@
                 VerifyCtorDtorAssign::verify( translationUnit );  // must happen before autogen, because autogen examines existing ctor/dtors
                 Concurrency::applyKeywords( translationUnit );
-                autogenerateRoutines( translationUnit ); // moved up, used to be below compoundLiteral - currently needs EnumAndPointerDecay
+                autogenerateRoutines( translationUnit ); // moved up, used to be below compoundLiteral - currently needs EnumAndPointerDecayPass
                 Concurrency::implementMutexFuncs( translationUnit );
                 Concurrency::implementThreadStarter( translationUnit );
                 ReturnChecker::checkFunctionReturns( translationUnit );
-                mutateAll( translationUnit, compoundliteral );
-                acceptAll( translationUnit, fpd );
+                compoundliteral.mutateDeclarationList( translationUnit );
+                acceptAll( translationUnit, pass3 );
                 ArrayLength::computeLength( translationUnit );
         }
 
         void validateType( Type *type, const Indexer *indexer ) {
-                PassVisitor<EnumAndPointerDecay> epc;
+                EnumAndPointerDecayPass epc;
                 LinkReferenceToTypes lrt( false, indexer );
-                ForallPointerDecay fpd( indexer );
+                Pass3 pass3( indexer );
                 type->accept( epc );
                 type->accept( lrt );
-                type->accept( fpd );
+                type->accept( pass3 );
         }
 
@@ -346 +356 @@
         }
 
-        void EnumAndPointerDecay::previsit( EnumDecl *enumDecl ) {
+        void EnumAndPointerDecayPass::visit( EnumDecl *enumDecl ) {
                 // Set the type of each member of the enumeration to be EnumConstant
                 for ( std::list< Declaration * >::iterator i = enumDecl->get_members().begin(); i != enumDecl->get_members().end(); ++i ) {
@@ -353 +363 @@
                         obj->set_type( new EnumInstType( Type::Qualifiers( Type::Const ), enumDecl->get_name() ) );
                 } // for
+                Parent::visit( enumDecl );
         }
 
@@ -359 +370 @@
                 void fixFunctionList( DWTList & dwts, FunctionType * func ) {
                         // the only case in which "void" is valid is where it is the only one in the list; then it should be removed
-                        // entirely. other fix ups are handled by the FixFunction class
+                        // entirely other fix ups are handled by the FixFunction class
                         typedef typename DWTList::iterator DWTIterator;
                         DWTIterator begin( dwts.begin() ), end( dwts.end() );
@@ -378 +389 @@
                                 for ( ; i != end; ++i ) {
                                         FixFunction fixer;
-                                        *i = (*i)->acceptMutator( fixer );
+                                        *i = (*i )->acceptMutator( fixer );
                                         if ( fixer.get_isVoid() ) {
                                                 throw SemanticError( "invalid type void in function type ", func );
@@ -387 +398 @@
         }
 
-        void EnumAndPointerDecay::previsit( FunctionType *func ) {
+        void EnumAndPointerDecayPass::visit( FunctionType *func ) {
                 // Fix up parameters and return types
                 fixFunctionList( func->get_parameters(), func );
                 fixFunctionList( func->get_returnVals(), func );
+                Visitor::visit( func );
         }
 
@@ -537 +549 @@
         }
 
-        ForallPointerDecay::ForallPointerDecay( const Indexer *other_indexer ) :  Indexer( false ) {
+        Pass3::Pass3( const Indexer *other_indexer ) :  Indexer( false ) {
                 if ( other_indexer ) {
                         indexer = other_indexer;
@@ -575 +587 @@
         }
 
-        void ForallPointerDecay::visit( ObjectDecl *object ) {
+        void Pass3::visit( ObjectDecl *object ) {
                 forallFixer( object->get_type() );
                 if ( PointerType *pointer = dynamic_cast< PointerType * >( object->get_type() ) ) {
@@ -584 +596 @@
         }
 
-        void ForallPointerDecay::visit( FunctionDecl *func ) {
+        void Pass3::visit( FunctionDecl *func ) {
                 forallFixer( func->get_type() );
                 Parent::visit( func );
@@ -596 +608 @@
 
         void ReturnChecker::previsit( FunctionDecl * functionDecl ) {
-                GuardValue( returnVals );
+                returnValsStack.push( returnVals );
                 returnVals = functionDecl->get_functionType()->get_returnVals();
+        }
+        void ReturnChecker::postvisit( FunctionDecl * functionDecl ) {
+                returnVals = returnValsStack.top();
+                returnValsStack.pop();
         }
 
@@ -876 +892 @@
         }
 
-        void CompoundLiteral::premutate( ObjectDecl *objectDecl ) {
+        DeclarationWithType * CompoundLiteral::mutate( ObjectDecl *objectDecl ) {
                 storageClasses = objectDecl->get_storageClasses();
-        }
-
-        Expression *CompoundLiteral::postmutate( CompoundLiteralExpr *compLitExpr ) {
+                DeclarationWithType * temp = Mutator::mutate( objectDecl );
+                return temp;
+        }
+
+        Expression *CompoundLiteral::mutate( CompoundLiteralExpr *compLitExpr ) {
                 // transform [storage_class] ... (struct S){ 3, ... };
                 // into [storage_class] struct S temp =  { 3, ... };
                 static UniqueName indexName( "_compLit" );
 
-                ObjectDecl *tempvar = new ObjectDecl( indexName.newName(), storageClasses, LinkageSpec::C, nullptr, compLitExpr->get_result(), compLitExpr->get_initializer() );
-                compLitExpr->set_result( nullptr );
-                compLitExpr->set_initializer( nullptr );
+                ObjectDecl *tempvar = new ObjectDecl( indexName.newName(), storageClasses, LinkageSpec::C, 0, compLitExpr->get_result(), compLitExpr->get_initializer() );
+                compLitExpr->set_result( 0 );
+                compLitExpr->set_initializer( 0 );
                 delete compLitExpr;
-                declsToAddBefore.push_back( tempvar );                                  // add modified temporary to current block
-                return new VariableExpr( tempvar );
+                DeclarationWithType * newtempvar = mutate( tempvar );
+                addDeclaration( newtempvar );                                   // add modified temporary to current block
+                return new VariableExpr( newtempvar );
         }