Changes in translator/ResolvExpr/CastCost.cc [c11e31c:51b73452]

File:

• translator/ResolvExpr/CastCost.cc (modified) (2 diffs)

translator/ResolvExpr/CastCost.cc

@@ +1 @@
+/*
+ * This file is part of the Cforall project
+ *
+ * $Id: CastCost.cc,v 1.11 2005/08/29 20:14:15 rcbilson Exp $
+ *
+ */
+
 #include "typeops.h"
 #include "Cost.h"
@@ -8 +15 @@
 
 namespace ResolvExpr {
-    class CastCost : public ConversionCost {
-      public:
-        CastCost( Type *dest, const SymTab::Indexer &indexer, const TypeEnvironment &env );
+
+class CastCost : public ConversionCost
+{
+public:
+  CastCost( Type *dest, const SymTab::Indexer &indexer, const TypeEnvironment &env );
   
-        virtual void visit( BasicType *basicType );
-        virtual void visit( PointerType *pointerType );
-    };
+  virtual void visit(BasicType *basicType);
+  virtual void visit(PointerType *pointerType);
+};
 
-    Cost castCost( Type *src, Type *dest, const SymTab::Indexer &indexer, const TypeEnvironment &env ) {
-        if ( TypeInstType *destAsTypeInst = dynamic_cast< TypeInstType* >( dest ) ) {
-            EqvClass eqvClass;
-            NamedTypeDecl *namedType;
-            if ( env.lookup( destAsTypeInst->get_name(), eqvClass ) ) {
-                return castCost( src, eqvClass.type, indexer, env );
-            } else if ( ( namedType = indexer.lookupType( destAsTypeInst->get_name() ) ) ) {
-                TypeDecl *type = dynamic_cast< TypeDecl* >( namedType );
-                // all typedefs should be gone by this point
-                assert( type );
-                if ( type->get_base() ) {
-                    return castCost( src, type->get_base(), indexer, env ) + Cost( 0, 0, 1 );
-                } // if
-            } // if
-        } // if
-        if ( typesCompatibleIgnoreQualifiers( src, dest, indexer, env ) ) {
-            return Cost( 0, 0, 0 );
-        } else if ( dynamic_cast< VoidType* >( dest ) ) {
-            return Cost( 0, 0, 1 );
-        } else {
-            CastCost converter( dest, indexer, env );
-            src->accept( converter );
-            if ( converter.get_cost() == Cost::infinity ) {
-                return Cost::infinity;
-            } else {
-                return converter.get_cost() + Cost( 0, 0, 0 );
-            } // if
-        } // if
+Cost
+castCost( Type *src, Type *dest, const SymTab::Indexer &indexer, const TypeEnvironment &env )
+{
+//  std::cout << "casting" << std::endl;
+//  src->print( std::cout, 8 );
+//  std::cout << std::endl << "to" << std::endl;
+//  dest->print( std::cout, 8 );
+  if( TypeInstType *destAsTypeInst = dynamic_cast< TypeInstType* >( dest ) ) {
+    EqvClass eqvClass;
+    NamedTypeDecl *namedType;
+    if( env.lookup( destAsTypeInst->get_name(), eqvClass ) ) {
+      return castCost( src, eqvClass.type, indexer, env );
+    } else if( ( namedType = indexer.lookupType( destAsTypeInst->get_name() ) ) ) {
+      TypeDecl *type = dynamic_cast< TypeDecl* >( namedType );
+      // all typedefs should be gone by this point
+      assert( type );
+      if( type->get_base() ) {
+        return castCost( src, type->get_base(), indexer, env ) + Cost( 0, 0, 1 );
+      }
     }
+  }
+  if( typesCompatibleIgnoreQualifiers( src, dest, indexer, env ) ) {
+//    std::cout << "types are compatible" << std::endl;
+    return Cost( 0, 0, 0 );
+  } else if( dynamic_cast< VoidType* >( dest ) ) {
+//    std::cout << "destination is void" << std::endl;
+    return Cost( 0, 0, 1 );
+  } else {
+    CastCost converter( dest, indexer, env );
+    src->accept( converter );
+//    std::cout << "cost is " << converter.get_cost() << std::endl;
+    if( converter.get_cost() == Cost::infinity ) {
+      return Cost::infinity;
+    } else {
+      return converter.get_cost() + Cost( 0, 0, 0 );
+    }
+  }
+}
 
-    CastCost::CastCost( Type *dest, const SymTab::Indexer &indexer, const TypeEnvironment &env )
-        : ConversionCost( dest, indexer, env ) {
+CastCost::CastCost( Type *dest, const SymTab::Indexer &indexer, const TypeEnvironment &env )
+  : ConversionCost( dest, indexer, env )
+{
+}
+
+void 
+CastCost::visit(BasicType *basicType)
+{
+  if( dynamic_cast< PointerType* >( dest ) ) {
+    cost = Cost( 1, 0, 0 );
+  } else {
+    ConversionCost::visit( basicType );
+  }
+}
+
+void 
+CastCost::visit(PointerType *pointerType)
+{
+  if( PointerType *destAsPtr = dynamic_cast< PointerType* >( dest ) ) {
+    if( pointerType->get_qualifiers() <= destAsPtr->get_qualifiers() && typesCompatibleIgnoreQualifiers( pointerType->get_base(), destAsPtr->get_base(), indexer, env ) ) {
+      cost = Cost( 0, 0, 1 );
+    } else if( BasicType *destAsBasic = dynamic_cast< BasicType* >( dest ) ) {
+      if( destAsBasic->isInteger() ) {
+        cost = Cost( 1, 0, 0 );
+      }
+    } else {
+      TypeEnvironment newEnv( env );
+      newEnv.add( pointerType->get_forall() );
+      newEnv.add( pointerType->get_base()->get_forall() );
+      int assignResult = ptrsCastable( pointerType->get_base(), destAsPtr->get_base(), newEnv, indexer );
+      if( assignResult > 0 ) {
+        cost = Cost( 0, 0, 1 );
+      } else if( assignResult < 0 ) {
+        cost = Cost( 1, 0, 0 );
+      }
     }
+  }
+}
 
-    void CastCost::visit( BasicType *basicType ) {
-        if ( dynamic_cast< PointerType* >( dest ) ) {
-            cost = Cost( 1, 0, 0 );
-        } else {
-            ConversionCost::visit( basicType );
-        } // if
-    }
-
-    void CastCost::visit( PointerType *pointerType ) {
-        if ( PointerType *destAsPtr = dynamic_cast< PointerType* >( dest ) ) {
-            if ( pointerType->get_qualifiers() <= destAsPtr->get_qualifiers() && typesCompatibleIgnoreQualifiers( pointerType->get_base(), destAsPtr->get_base(), indexer, env ) ) {
-                cost = Cost( 0, 0, 1 );
-            } else if ( BasicType *destAsBasic = dynamic_cast< BasicType* >( dest ) ) {
-                if ( destAsBasic->isInteger() ) {
-                    cost = Cost( 1, 0, 0 );
-                }
-            } else {
-                TypeEnvironment newEnv( env );
-                newEnv.add( pointerType->get_forall() );
-                newEnv.add( pointerType->get_base()->get_forall() );
-                int assignResult = ptrsCastable( pointerType->get_base(), destAsPtr->get_base(), newEnv, indexer );
-                if ( assignResult > 0 ) {
-                    cost = Cost( 0, 0, 1 );
-                } else if ( assignResult < 0 ) {
-                    cost = Cost( 1, 0, 0 );
-                } // if
-            } // if
-        } // if
-    }
 } // namespace ResolvExpr