//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Box.cc -- 
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Thu Nov 19 17:40:51 2015
// Update Count     : 133
//

#include <set>
#include <stack>
#include <string>
#include <iterator>
#include <algorithm>
#include <cassert>

#include "Box.h"
#include "PolyMutator.h"
#include "FindFunction.h"
#include "ScrubTyVars.h"

#include "Parser/ParseNode.h"

#include "SynTree/Type.h"
#include "SynTree/Expression.h"
#include "SynTree/Initializer.h"
#include "SynTree/Statement.h"
#include "SynTree/Mutator.h"

#include "ResolvExpr/TypeEnvironment.h"

#include "SymTab/Mangler.h"

#include "SemanticError.h"
#include "UniqueName.h"
#include "utility.h"

#include <ext/functional> // temporary

namespace GenPoly {
	namespace {
		const std::list<Label> noLabels;

		FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars );

		class Pass1 : public PolyMutator {
		  public:
			Pass1();
			virtual Expression *mutate( ApplicationExpr *appExpr );
			virtual Expression *mutate( AddressExpr *addrExpr );
			virtual Expression *mutate( UntypedExpr *expr );
			virtual DeclarationWithType* mutate( FunctionDecl *functionDecl );
			virtual TypeDecl *mutate( TypeDecl *typeDecl );
			virtual Expression *mutate( CommaExpr *commaExpr );
			virtual Expression *mutate( ConditionalExpr *condExpr );
			virtual Statement *mutate(ReturnStmt *catchStmt);
			virtual Type *mutate( PointerType *pointerType );
			virtual Type *mutate( FunctionType *pointerType );
  
			virtual void doBeginScope();
			virtual void doEndScope();
		  private:
			void passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
			Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg );
			Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg );
			Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
			void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars );
			void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
			void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars );
			void findAssignOps( const std::list< TypeDecl *> &forall );
			void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars );
			FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars );
			Expression *handleIntrinsics( ApplicationExpr *appExpr );
			ObjectDecl *makeTemporary( Type *type );

			typedef std::map< std::string, DeclarationWithType *> AdapterMap;
			std::map< std::string, DeclarationWithType *> assignOps;
			std::stack< AdapterMap > adapters;
			DeclarationWithType *retval;
			bool useRetval;
			UniqueName tempNamer;
		};

		class Pass2 : public PolyMutator {
		  public:
			Pass2();
			template< typename DeclClass >
			DeclClass *handleDecl( DeclClass *decl, Type *type );
			virtual DeclarationWithType *mutate( FunctionDecl *functionDecl );
			virtual ObjectDecl *mutate( ObjectDecl *objectDecl );
			virtual TypeDecl *mutate( TypeDecl *typeDecl );
			virtual TypedefDecl *mutate( TypedefDecl *typedefDecl );
			virtual Type *mutate( PointerType *pointerType );
			virtual Type *mutate( FunctionType *funcType );
		  private:
			void addAdapters( FunctionType *functionType );
  
			std::map< UniqueId, std::string > adapterName;
		};

		class Pass3 : public PolyMutator {
		  public:
			template< typename DeclClass >
			DeclClass *handleDecl( DeclClass *decl, Type *type );
			virtual DeclarationWithType *mutate( FunctionDecl *functionDecl );
			virtual ObjectDecl *mutate( ObjectDecl *objectDecl );
			virtual TypedefDecl *mutate( TypedefDecl *objectDecl );
			virtual TypeDecl *mutate( TypeDecl *objectDecl );
			virtual Statement *mutate( DeclStmt *declStmt );
			virtual Type *mutate( PointerType *pointerType );
			virtual Type *mutate( FunctionType *funcType );
		  private:
		};

	} // anonymous namespace

	void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) {
		for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) {
			if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) {
				(*i)->print( os );
				os << std::endl;
			} // if
		} // for
	}

	void box( std::list< Declaration *>& translationUnit ) {
		Pass1 pass1;
		Pass2 pass2;
		Pass3 pass3;
		mutateAll( translationUnit, pass1 );
		mutateAll( translationUnit, pass2 );
		mutateAll( translationUnit, pass3 );
	}

	////////////////////////////////////////// Pass1 ////////////////////////////////////////////////////

	namespace {
		std::string makeAdapterName( const std::string &mangleName ) {
			return "_adapter" + mangleName;
		}

		Pass1::Pass1()
			: useRetval( false ), tempNamer( "_temp" ) {
			adapters.push(AdapterMap());
		}

		bool checkAssignment( DeclarationWithType *decl, std::string &name ) {
			if ( decl->get_name() == "?=?" ) {
				if ( PointerType *ptrType = dynamic_cast< PointerType *>( decl->get_type() ) ) {
					if ( FunctionType *funType = dynamic_cast< FunctionType *>( ptrType->get_base() ) ) {
						if ( funType->get_parameters().size() == 2 ) {
							if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) {
								if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) {
									name = typeInst->get_name();
									return true;
								} // if
							} // if
						} // if
					} // if
				} // if
			} // if
			return false;
		}

		void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) {
			assignOps.clear();
			for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
				for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) {
					std::string typeName;
					if ( checkAssignment( *assert, typeName ) ) {
						assignOps[ typeName ] = *assert;
					} // if
				} // for
			} // for
		}

		DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) {
			if ( functionDecl->get_statements() ) {		// empty routine body ?
				doBeginScope();
				TyVarMap oldtyVars = scopeTyVars;
				DeclarationWithType *oldRetval = retval;
				bool oldUseRetval = useRetval;

				// process polymorphic return value
				retval = 0;
				std::string typeName;
				if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
					retval = functionDecl->get_functionType()->get_returnVals().front();
  
					// give names to unnamed return values
					if ( retval->get_name() == "" ) {
						retval->set_name( "_retparm" );
						retval->set_linkage( LinkageSpec::C );
					} // if
				} // if
	
				FunctionType *functionType = functionDecl->get_functionType();
				makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
				findAssignOps( functionDecl->get_functionType()->get_forall() );

				std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
				std::list< FunctionType *> functions;
				for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
					for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
						findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter );
					} // for
				} // for
				for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
					findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter );
				} // for
				AdapterMap & adapters = Pass1::adapters.top();
				for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
					std::string mangleName = SymTab::Mangler::mangle( *funType );
					if ( isPolyRet( *funType, scopeTyVars ) ) {
						// if the return type involved polymorphic types, then the adapter will need to take those
						// polymorphic types as pointers. Therefore, there can be two different functions with the same
						// mangled name, so we need the mangled names to be different.
						mangleName += "polyret_";
					} // if
					if ( adapters.find( mangleName ) == adapters.end() ) {
						std::string adapterName = makeAdapterName( mangleName );
						adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) );
					} // if
				} // for

				functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
  
				scopeTyVars = oldtyVars;
				// std::cerr << "end FunctionDecl: ";
				// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
				// 	std::cerr << i->first << " ";
				// }
				// std::cerr << "\n";
				retval = oldRetval;
				useRetval = oldUseRetval;
				doEndScope();
			} // if
			return functionDecl;
		}

		TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) {
///     std::cerr << "add " << typeDecl->get_name() << "\n";
			scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
			return Mutator::mutate( typeDecl );
		}

		Expression *Pass1::mutate( CommaExpr *commaExpr ) {
			bool oldUseRetval = useRetval;
			useRetval = false;
			commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
			useRetval = oldUseRetval;
			commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
			return commaExpr;
		}

		Expression *Pass1::mutate( ConditionalExpr *condExpr ) {
			bool oldUseRetval = useRetval;
			useRetval = false;
			condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
			useRetval = oldUseRetval;
			condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
			condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
			return condExpr;

		}

		void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
			for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
				ResolvExpr::EqvClass eqvClass;
				assert( env );
				if ( tyParm->second == TypeDecl::Any ) {
					Type *concrete = env->lookup( tyParm->first );
					if ( concrete ) {
						arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
						arg++;
					} else {
						throw SemanticError( "unbound type variable in application ", appExpr );
					} // if
				} // if
			} // for
		}

		ObjectDecl *Pass1::makeTemporary( Type *type ) {
			ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
			stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
			return newObj;
		}

		TypeInstType *isPolyType( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
			if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
				if ( env ) {
					if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
						return isPolyType( newType, env, tyVars );
					} // if
				} // if
				if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) {
					return typeInst;
				} else {
					return 0;
				} // if
			} else {
				return 0;
			} // if
		}

		Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) {
			if ( useRetval ) {
				assert( retval );
				arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
				arg++;
			} else {
				ObjectDecl *newObj = makeTemporary( retType->clone() );
				Expression *paramExpr = new VariableExpr( newObj );
				if ( ! isPolyType( newObj->get_type(), env, scopeTyVars ) ) {
					paramExpr = new AddressExpr( paramExpr );
				} // if
				arg = appExpr->get_args().insert( arg, paramExpr );
				arg++;
///     stmtsToAdd.push_back( new ExprStmt( noLabels, appExpr ) );
				CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
				commaExpr->set_env( appExpr->get_env() );
				appExpr->set_env( 0 );
				return commaExpr;
			} // if
			return appExpr;
		}

		Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) {
			ResolvExpr::EqvClass eqvClass;
			assert( env );
			Type *concrete = env->lookup( typeName );
			if ( concrete == 0 ) {
				throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
			} // if
			return addRetParam( appExpr, function, concrete, arg );
		}

		Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
			Expression *ret = appExpr;
			if ( ! function->get_returnVals().empty() && isPolyVal( function->get_returnVals().front()->get_type(), tyVars ) ) {
				ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
			} // if
			std::string mangleName = SymTab::Mangler::mangle( function );
			if ( isPolyRet( function, tyVars ) ) {
				mangleName += "polyret_";
			} // if
			std::string adapterName = makeAdapterName( mangleName );

			appExpr->get_args().push_front( appExpr->get_function() );
			appExpr->set_function( new NameExpr( adapterName ) );
  
			return ret;
		}

		void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) {
			assert( ! arg->get_results().empty() );
///   if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) {
			TypeInstType *typeInst = dynamic_cast< TypeInstType *>( param );
			if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) {
				if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
					// if the argument's type is a type parameter, we don't need to box again!
					return;
				} else if ( arg->get_results().front()->get_isLvalue() ) {
					// VariableExpr and MemberExpr are lvalues
					arg = new AddressExpr( arg );
				} else {
					ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
					newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
					stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
					UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
					assign->get_args().push_back( new VariableExpr( newObj ) );
					assign->get_args().push_back( arg );
					stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
					arg = new AddressExpr( new VariableExpr( newObj ) );
				} // if
			} // if
///   }
		}

		void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) {
			Type *newType = formal->clone();
			std::list< FunctionType *> functions;
			// instead of functions needing adapters, this really ought to look for
			// any function mentioning a polymorphic type
			findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
			if ( ! functions.empty() ) {
				actual = new CastExpr( actual, newType );
			} else {
				delete newType;
			} // if
		}

		void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
///   std::cout << "function is ";
///   function->print( std::cout );
			for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
///     std::cout << "parameter is ";
///     (*param)->print( std::fcout );
///     std::cout << std::endl << "argument is ";
///     (*arg)->print( std::cout );
				assert( arg != appExpr->get_args().end() );
				addCast( *arg, (*param)->get_type(), exprTyVars );
				boxParam( (*param)->get_type(), *arg, exprTyVars );
			} // for
		}

		void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
			std::list< Expression *>::iterator cur = arg;
			for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
				for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
					InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
					assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" );
					Expression *newExpr = inferParam->second.expr->clone();
					addCast( newExpr, (*assert)->get_type(), tyVars );
					boxParam( (*assert)->get_type(), newExpr, tyVars );
					appExpr->get_args().insert( cur, newExpr );
				} // for
			} // for
		}

		void makeRetParm( FunctionType *funcType ) {
			DeclarationWithType *retParm = funcType->get_returnVals().front();

			// make a new parameter that is a pointer to the type of the old return value
			retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
			funcType->get_parameters().push_front( retParm );

			// we don't need the return value any more
			funcType->get_returnVals().clear();
		}

		FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) {
			// actually make the adapter type
			FunctionType *adapter = adaptee->clone();
			if ( ! adapter->get_returnVals().empty() && isPolyVal( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
				makeRetParm( adapter );
			} // if
			adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
			return adapter;
		}

		Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) {
			assert( param );
			assert( arg );
///   std::cout << "arg type is ";
///   arg->get_type()->print( std::cout );
///   std::cout << "param type is ";
///   param->get_type()->print( std::cout );
///   std::cout << " tyVars are: ";
///   printTyVarMap( std::cout, tyVars );
			if ( isPolyVal( realParam->get_type(), tyVars ) ) {
///     if ( dynamic_cast< PointerType *>( arg->get_type() ) ) {
///       return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() );
///     } else {
				if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) {
					UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
					deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
					deref->get_results().push_back( arg->get_type()->clone() );
					return deref;
				} // if
///     }
			} // if
			return new VariableExpr( param );
		}

		void addAdapterParams( ApplicationExpr *adapteeApp, std::list< DeclarationWithType *>::iterator arg, std::list< DeclarationWithType *>::iterator param, std::list< DeclarationWithType *>::iterator paramEnd, std::list< DeclarationWithType *>::iterator realParam, const TyVarMap &tyVars ) {
			UniqueName paramNamer( "_p" );
			for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
				if ( (*param)->get_name() == "" ) {
					(*param)->set_name( paramNamer.newName() );
					(*param)->set_linkage( LinkageSpec::C );
				} // if
				adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) );
			} // for
		}



		FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
			FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
			adapterType = ScrubTyVars::scrub( adapterType, tyVars );
			DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
			adapteeDecl->set_name( "_adaptee" );
			ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
			Statement *bodyStmt;
  
			std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
			std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
			std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
			for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
				assert( tyArg != realType->get_forall().end() );
				std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin();
				std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin();
				std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin();
				for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
					assert( assertArg != (*tyArg)->get_assertions().end() );
					adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) );
				} // for
			} // for
  
			std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
			std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
			std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
			param++;		// skip adaptee parameter
			if ( realType->get_returnVals().empty() ) {
				addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
				bodyStmt = new ExprStmt( noLabels, adapteeApp );
			} else if ( isPolyVal( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
				if ( (*param)->get_name() == "" ) {
					(*param)->set_name( "_ret" );
					(*param)->set_linkage( LinkageSpec::C );
				} // if
				UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
				UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
				deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
				assign->get_args().push_back( deref );
				addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
				assign->get_args().push_back( adapteeApp );
				bodyStmt = new ExprStmt( noLabels, assign );
			} else {
				// adapter for a function that returns a monomorphic value
				addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
				bodyStmt = new ReturnStmt( noLabels, adapteeApp );
			} // if
			CompoundStmt *adapterBody = new CompoundStmt( noLabels );
			adapterBody->get_kids().push_back( bodyStmt );
			std::string adapterName = makeAdapterName( mangleName );
			return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
		}

		void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
			// collect a list of function types passed as parameters or implicit parameters (assertions)
			std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
			std::list< FunctionType *> functions;
			for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
				for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
					findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
				} // for
			} // for
			for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
				findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
			} // for

			// parameter function types for which an appropriate adapter has been generated.  we cannot use the types
			// after applying substitutions, since two different parameter types may be unified to the same type
			std::set< std::string > adaptersDone;

			for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
				FunctionType *originalFunction = (*funType)->clone();
				FunctionType *realFunction = (*funType)->clone();
				std::string mangleName = SymTab::Mangler::mangle( realFunction );

				// only attempt to create an adapter or pass one as a parameter if we haven't already done so for this
				// pre-substitution parameter function type.
				if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
					adaptersDone.insert( adaptersDone.begin(), mangleName );
					
					// apply substitution to type variables to figure out what the adapter's type should look like
					assert( env );
					env->apply( realFunction );
					mangleName = SymTab::Mangler::mangle( realFunction );

					if ( isPolyRet( originalFunction, exprTyVars ) ) {
						mangleName += "polyret_";
					} // if

					AdapterMap & adapters = Pass1::adapters.top();
					AdapterMap::iterator adapter = adapters.find( mangleName );
					if ( adapter == adapters.end() ) {
						// adapter has not been created yet in the current scope, so define it
						FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars );
						adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) );
						stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
					} // if
					assert( adapter != adapters.end() );

					// add the appropriate adapter as a parameter
					appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
				} // if
			} // for
		} // passAdapters

		TypeInstType *isPolyPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
			if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) {
				return isPolyType( ptr->get_base(), env, tyVars );
			} else if ( env ) {
				if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
					if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
						return isPolyPtr( newType, env, tyVars );
					} // if
				} // if
			} // if
			return 0;
		}

		TypeInstType *isPolyPtrPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
			if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) {
				return isPolyPtr( ptr->get_base(), env, tyVars );
			} else if ( env ) {
				if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
					if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
						return isPolyPtrPtr( newType, env, tyVars );
					} // if
				} // if
			} // if
			return 0;
		}

		Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, std::string polyName, bool isIncr ) {
			NameExpr *opExpr;
			if ( isIncr ) {
				opExpr = new NameExpr( "?+=?" );
			} else {
				opExpr = new NameExpr( "?-=?" );
			} // if
			UntypedExpr *addAssign = new UntypedExpr( opExpr );
			if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
				addAssign->get_args().push_back( address->get_arg() );
			} else {
				addAssign->get_args().push_back( appExpr->get_args().front() );
			} // if
			addAssign->get_args().push_back( new NameExpr( polyName ) );
			addAssign->get_results().front() = appExpr->get_results().front()->clone();
			if ( appExpr->get_env() ) {
				addAssign->set_env( appExpr->get_env() );
				appExpr->set_env( 0 );
			} // if
			appExpr->get_args().clear();
			delete appExpr;
			return addAssign;
		}

		Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) {
			if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) {
				if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
					if ( varExpr->get_var()->get_name() == "?[?]" ) {
						assert( ! appExpr->get_results().empty() );
						assert( appExpr->get_args().size() == 2 );
						TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars );
						TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars );
						assert( ! typeInst1 || ! typeInst2 );
						UntypedExpr *ret = 0;
						if ( typeInst1 || typeInst2 ) {
							ret = new UntypedExpr( new NameExpr( "?+?" ) );
						} // if
						if ( typeInst1 ) {
							UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
							multiply->get_args().push_back( appExpr->get_args().back() );
							multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
							ret->get_args().push_back( appExpr->get_args().front() );
							ret->get_args().push_back( multiply );
						} else if ( typeInst2 ) {
							UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
							multiply->get_args().push_back( appExpr->get_args().front() );
							multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) );
							ret->get_args().push_back( multiply );
							ret->get_args().push_back( appExpr->get_args().back() );
						} // if
						if ( typeInst1 || typeInst2 ) {
							ret->get_results().push_front( appExpr->get_results().front()->clone() );
							if ( appExpr->get_env() ) {
								ret->set_env( appExpr->get_env() );
								appExpr->set_env( 0 );
							} // if
							appExpr->get_args().clear();
							delete appExpr;
							return ret;
						} // if
					} else if ( varExpr->get_var()->get_name() == "*?" ) {
						assert( ! appExpr->get_results().empty() );
						assert( ! appExpr->get_args().empty() );
						if ( isPolyType( appExpr->get_results().front(), env, scopeTyVars ) ) {
							Expression *ret = appExpr->get_args().front();
							delete ret->get_results().front();
							ret->get_results().front() = appExpr->get_results().front()->clone();
							if ( appExpr->get_env() ) {
								ret->set_env( appExpr->get_env() );
								appExpr->set_env( 0 );
							} // if
							appExpr->get_args().clear();
							delete appExpr;
							return ret;
						} // if
					} else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) {
						assert( ! appExpr->get_results().empty() );
						assert( appExpr->get_args().size() == 1 );
						if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) {
							Type *tempType = appExpr->get_results().front()->clone();
							if ( env ) {
								env->apply( tempType );
							} // if
							ObjectDecl *newObj = makeTemporary( tempType );
							VariableExpr *tempExpr = new VariableExpr( newObj );
							UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
							assignExpr->get_args().push_back( tempExpr->clone() );
							if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
								assignExpr->get_args().push_back( address->get_arg()->clone() );
							} else {
								assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
							} // if
							CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "?++" ) );
							return new CommaExpr( firstComma, tempExpr );
						} // if
					} else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) {
						assert( ! appExpr->get_results().empty() );
						assert( appExpr->get_args().size() == 1 );
						if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) {
							return makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "++?" );
						} // if
					} else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) {
						assert( ! appExpr->get_results().empty() );
						assert( appExpr->get_args().size() == 2 );
						TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars );
						TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars );
						if ( typeInst1 && typeInst2 ) {
							UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
							divide->get_args().push_back( appExpr );
							divide->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
							divide->get_results().push_front( appExpr->get_results().front()->clone() );
							if ( appExpr->get_env() ) {
								divide->set_env( appExpr->get_env() );
								appExpr->set_env( 0 );
							} // if
							return divide;
						} else if ( typeInst1 ) {
							UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
							multiply->get_args().push_back( appExpr->get_args().back() );
							multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
							appExpr->get_args().back() = multiply;
						} else if ( typeInst2 ) {
							UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
							multiply->get_args().push_back( appExpr->get_args().front() );
							multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) );
							appExpr->get_args().front() = multiply;
						} // if
					} else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) {
						assert( ! appExpr->get_results().empty() );
						assert( appExpr->get_args().size() == 2 );
						TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars );
						if ( typeInst ) {
							UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
							multiply->get_args().push_back( appExpr->get_args().back() );
							multiply->get_args().push_back( new NameExpr( typeInst->get_name() ) );
							appExpr->get_args().back() = multiply;
						} // if
					} // if
					return appExpr;
				} // if
			} // if
			return 0;
		}

		Expression *Pass1::mutate( ApplicationExpr *appExpr ) {
			// std::cerr << "mutate appExpr: ";
			// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
			// 	std::cerr << i->first << " ";
			// }
			// std::cerr << "\n";
			bool oldUseRetval = useRetval;
			useRetval = false;
			appExpr->get_function()->acceptMutator( *this );
			mutateAll( appExpr->get_args(), *this );
			useRetval = oldUseRetval;
  
			assert( ! appExpr->get_function()->get_results().empty() );
			PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
			assert( pointer );
			FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
			assert( function );
  
			if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
				return newExpr;
			} // if
  
			Expression *ret = appExpr;
  
			std::list< Expression *>::iterator arg = appExpr->get_args().begin();
			std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
  
			std::string typeName;
			if ( isPolyRet( function, typeName ) ) {
				ret = addPolyRetParam( appExpr, function, typeName, arg );
			} else if ( needsAdapter( function, scopeTyVars ) ) {
				// std::cerr << "needs adapter: ";
				// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
				// 	std::cerr << i->first << " ";
				// }
				// std::cerr << "\n";
				// change the application so it calls the adapter rather than the passed function
				ret = applyAdapter( appExpr, function, arg, scopeTyVars );
			} // if
			arg = appExpr->get_args().begin();
  
			TyVarMap exprTyVars;
			makeTyVarMap( function, exprTyVars );
  
			passTypeVars( appExpr, arg, exprTyVars );
			addInferredParams( appExpr, function, arg, exprTyVars );

			arg = paramBegin;
  
			boxParams( appExpr, function, arg, exprTyVars );

			passAdapters( appExpr, function, exprTyVars );

			return ret;
		}

		Expression *Pass1::mutate( UntypedExpr *expr ) {
			if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), env, scopeTyVars ) ) {
				if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
					if ( name->get_name() == "*?" ) {
						Expression *ret = expr->get_args().front();
						expr->get_args().clear();
						delete expr;
						return ret->acceptMutator( *this );
					} // if
				} // if
			} // if
			return PolyMutator::mutate( expr );
		}

		Expression *Pass1::mutate( AddressExpr *addrExpr ) {
			assert( ! addrExpr->get_arg()->get_results().empty() );
			addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
			if ( isPolyType( addrExpr->get_arg()->get_results().front(), env, scopeTyVars ) ) {
				Expression *ret = addrExpr->get_arg();
				delete ret->get_results().front();
				ret->get_results().front() = addrExpr->get_results().front()->clone();
				addrExpr->set_arg( 0 );
				delete addrExpr;
				return ret;
			} else {
				return addrExpr;
			} // if
		}

		Statement * Pass1::mutate(ReturnStmt *retStmt) {
			// a cast expr on a polymorphic return value is either redundant or invalid
			while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( retStmt->get_expr() ) ) {
				retStmt->set_expr( castExpr->get_arg() );
				retStmt->get_expr()->set_env( castExpr->get_env() );
				castExpr->set_env( 0 );
				castExpr->set_arg( 0 );
				delete castExpr;
			}
			if ( retval && retStmt->get_expr() ) {
				assert( ! retStmt->get_expr()->get_results().empty() );
				if ( retStmt->get_expr()->get_results().front()->get_isLvalue() ) {
///       retStmt->set_expr( mutateExpression( retStmt->get_expr() ) );
					TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() );
					assert( typeInst );
					std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
					if ( assignIter == assignOps.end() ) {
						throw SemanticError( "Attempt to return dtype or ftype object in ", retStmt->get_expr() );
					} // if
					ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
					Expression *retParm = new NameExpr( retval->get_name() );
					retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
					assignExpr->get_args().push_back( retParm );
					assignExpr->get_args().push_back( retStmt->get_expr() );
					stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
				} else {
					useRetval = true;
					stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( retStmt->get_expr() ) ) );
					useRetval = false;
				} // if
				retStmt->set_expr( 0 );
			} else {
				retStmt->set_expr( mutateExpression( retStmt->get_expr() ) );
			} // if
			return retStmt;
		}

		Type * Pass1::mutate( PointerType *pointerType ) {
			TyVarMap oldtyVars = scopeTyVars;
			makeTyVarMap( pointerType, scopeTyVars );
  
			Type *ret = Mutator::mutate( pointerType );
  
			scopeTyVars = oldtyVars;
			return ret;
		}

		Type * Pass1::mutate( FunctionType *functionType ) {
			TyVarMap oldtyVars = scopeTyVars;
			makeTyVarMap( functionType, scopeTyVars );
  
			Type *ret = Mutator::mutate( functionType );
  
			scopeTyVars = oldtyVars;
			return ret;
		}

		void Pass1::doBeginScope() {
			// actually, maybe this could (should?) push
			// a copy of the current map
			adapters.push(adapters.top());
		}

		void Pass1::doEndScope() {
			adapters.pop();
		}

////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////

		Pass2::Pass2() {}

		void Pass2::addAdapters( FunctionType *functionType ) {
			std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
			std::list< FunctionType *> functions;
			for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
				Type *orig = (*arg)->get_type();
				findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
				(*arg)->set_type( orig );
			}
			std::set< std::string > adaptersDone;
			for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
				std::string mangleName = SymTab::Mangler::mangle( *funType );
				if ( isPolyRet( *funType, scopeTyVars ) ) {
					mangleName += "polyret_";
				} // if
				if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
					std::string adapterName = makeAdapterName( mangleName );
					paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
					adaptersDone.insert( adaptersDone.begin(), mangleName );
				}
			}
///  deleteAll( functions );
		}

		template< typename DeclClass >
		DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) {
			DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );

			return ret;
		}

		DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
			return handleDecl( functionDecl, functionDecl->get_functionType() );
		}

		ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
			return handleDecl( objectDecl, objectDecl->get_type() );
		}

		TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
			scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
			if ( typeDecl->get_base() ) {
				return handleDecl( typeDecl, typeDecl->get_base() );
			} else {
				return Mutator::mutate( typeDecl );
			}
		}

		TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
			return handleDecl( typedefDecl, typedefDecl->get_base() );
		}

		Type * Pass2::mutate( PointerType *pointerType ) {
			TyVarMap oldtyVars = scopeTyVars;
			makeTyVarMap( pointerType, scopeTyVars );
  
			Type *ret = Mutator::mutate( pointerType );
  
			scopeTyVars = oldtyVars;
			return ret;
		}

		Type *Pass2::mutate( FunctionType *funcType ) {
			TyVarMap oldtyVars = scopeTyVars;
			makeTyVarMap( funcType, scopeTyVars );
  
			std::string typeName;
			if ( isPolyRet( funcType, typeName ) ) {
				DeclarationWithType *ret = funcType->get_returnVals().front();
				ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) );
				funcType->get_parameters().push_front( ret );
				funcType->get_returnVals().pop_front();
			}
  
			std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
			std::list< DeclarationWithType *> inferredParams;
			ObjectDecl *newObj = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
///   ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
			for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
				ObjectDecl *thisParm;
				// add all size parameters to parameter list
				if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
					thisParm = newObj->clone();
					thisParm->set_name( (*tyParm)->get_name() );
					last = funcType->get_parameters().insert( last, thisParm );
					++last;
				}
				// move all assertions into parameter list
				for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
///      *assert = (*assert)->acceptMutator( *this );
					inferredParams.push_back( *assert );
				}
				(*tyParm)->get_assertions().clear();
			}
			delete newObj;
			funcType->get_parameters().splice( last, inferredParams );
			addAdapters( funcType );
			mutateAll( funcType->get_returnVals(), *this );
			mutateAll( funcType->get_parameters(), *this );
  
			scopeTyVars = oldtyVars;
			return funcType;
		}

////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////

		template< typename DeclClass >
		DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) {
			TyVarMap oldtyVars = scopeTyVars;
			makeTyVarMap( type, scopeTyVars );
  
			DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
			ScrubTyVars::scrub( decl, scopeTyVars );

			scopeTyVars = oldtyVars;
			return ret;
		}

		ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
			return handleDecl( objectDecl, objectDecl->get_type() );
		}

		DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
			return handleDecl( functionDecl, functionDecl->get_functionType() );
		}

		TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
			return handleDecl( typedefDecl, typedefDecl->get_base() );
		}

		TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
///   Initializer *init = 0;
///   std::list< Expression *> designators;
///   scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
///   if ( typeDecl->get_base() ) {
///     init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
///   }
///   return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );

			scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
			return Mutator::mutate( typeDecl );
		}

		Type * Pass3::mutate( PointerType *pointerType ) {
			TyVarMap oldtyVars = scopeTyVars;
			makeTyVarMap( pointerType, scopeTyVars );
  
			Type *ret = Mutator::mutate( pointerType );
  
			scopeTyVars = oldtyVars;
			return ret;
		}

		Type * Pass3::mutate( FunctionType *functionType ) {
			TyVarMap oldtyVars = scopeTyVars;
			makeTyVarMap( functionType, scopeTyVars );
  
			Type *ret = Mutator::mutate( functionType );
  
			scopeTyVars = oldtyVars;
			return ret;
		}

		Statement *Pass3::mutate( DeclStmt *declStmt ) {
			if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) {
				if ( isPolyVal( objectDecl->get_type(), scopeTyVars ) ) {
					// change initialization of a polymorphic value object
					// to allocate storage with alloca
					TypeInstType *typeInst = dynamic_cast< TypeInstType *>( objectDecl->get_type() );
					assert( typeInst );
					UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
					alloc->get_args().push_back( new NameExpr( typeInst->get_name() ) );

					delete objectDecl->get_init();

					std::list<Expression*> designators;
					objectDecl->set_init( new SingleInit( alloc, designators ) );
				}
			}
			return Mutator::mutate( declStmt );
		}
	} // anonymous namespace
} // namespace GenPoly

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //