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source: src/GenPoly/Box.cc @ f3fc8cbe

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsctordeferred_resndemanglerenumforall-pointer-decaygc_noraiijacob/cs343-translationjenkins-sandboxmemorynew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newstringwith_gc

Last change on this file since f3fc8cbe was 1cced28, checked in by Aaron Moss <a3moss@…>, 8 years ago
box arguments to generic parameters
Property mode set to `100644`
File size: 50.3 KB

Rev	Line
[51587aa]	1	//
	2	// Cforall Version 1.0.0 Copyright (C) 2015 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	//
[ae63a18]	7	// Box.cc --
[51587aa]	8	//
	9	// Author : Richard C. Bilson
	10	// Created On : Mon May 18 07:44:20 2015
[bdf1954]	11	// Last Modified By : Rob Schluntz
[ae63a18]	12	// Last Modified On : Fri Dec 18 14:53:08 2015
	13	// Update Count : 217
[51587aa]	14	//
[51b7345]	15
	16	#include <set>
[b1a6d6b]	17	#include <stack>
[51b7345]	18	#include <string>
	19	#include <iterator>
	20	#include <algorithm>
	21	#include <cassert>
	22
	23	#include "Box.h"
	24	#include "PolyMutator.h"
	25	#include "FindFunction.h"
	26	#include "ScrubTyVars.h"
	27
[68cd1ce]	28	#include "Parser/ParseNode.h"
	29
[cdec5af]	30	#include "SynTree/Constant.h"
[51b7345]	31	#include "SynTree/Type.h"
	32	#include "SynTree/Expression.h"
	33	#include "SynTree/Initializer.h"
	34	#include "SynTree/Statement.h"
	35	#include "SynTree/Mutator.h"
[68cd1ce]	36
[51b7345]	37	#include "ResolvExpr/TypeEnvironment.h"
[68cd1ce]	38
[51b7345]	39	#include "SymTab/Mangler.h"
	40
	41	#include "SemanticError.h"
	42	#include "UniqueName.h"
	43	#include "utility.h"
	44
	45	#include <ext/functional> // temporary
	46
	47	namespace GenPoly {
[01aeade]	48	namespace {
	49	const std::list<Label> noLabels;
	50
[e56cfdb0]	51	FunctionType makeAdapterType( FunctionType adaptee, const TyVarMap &tyVars );
	52
[f8b961b]	53	/// Replaces polymorphic return types with out-parameters, replaces calls to polymorphic functions with adapter calls as needed, and adds appropriate type variables to the function call
[01aeade]	54	class Pass1 : public PolyMutator {
	55	public:
	56	Pass1();
	57	virtual Expression mutate( ApplicationExpr appExpr );
	58	virtual Expression mutate( AddressExpr addrExpr );
	59	virtual Expression mutate( UntypedExpr expr );
	60	virtual DeclarationWithType* mutate( FunctionDecl *functionDecl );
	61	virtual TypeDecl mutate( TypeDecl typeDecl );
	62	virtual Expression mutate( CommaExpr commaExpr );
	63	virtual Expression mutate( ConditionalExpr condExpr );
[cf16f94]	64	virtual Statement * mutate( ReturnStmt *returnStmt );
[01aeade]	65	virtual Type mutate( PointerType pointerType );
[cf16f94]	66	virtual Type * mutate( FunctionType *functionType );
[ae63a18]	67
[01aeade]	68	virtual void doBeginScope();
	69	virtual void doEndScope();
	70	private:
	71	void passTypeVars( ApplicationExpr appExpr, std::list< Expression >::iterator &arg, const TyVarMap &exprTyVars );
	72	Expression addRetParam( ApplicationExpr appExpr, FunctionType function, Type retType, std::list< Expression *>::iterator &arg );
	73	Expression addPolyRetParam( ApplicationExpr appExpr, FunctionType function, std::string typeName, std::list< Expression >::iterator &arg );
	74	Expression applyAdapter( ApplicationExpr appExpr, FunctionType function, std::list< Expression >::iterator &arg, const TyVarMap &exprTyVars );
	75	void boxParam( Type formal, Expression &arg, const TyVarMap &exprTyVars );
	76	void boxParams( ApplicationExpr appExpr, FunctionType function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
	77	void addInferredParams( ApplicationExpr appExpr, FunctionType functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars );
	78	void findAssignOps( const std::list< TypeDecl *> &forall );
	79	void passAdapters( ApplicationExpr appExpr, FunctionType functionType, const TyVarMap &exprTyVars );
	80	FunctionDecl makeAdapter( FunctionType adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars );
	81	Expression handleIntrinsics( ApplicationExpr appExpr );
	82	ObjectDecl makeTemporary( Type type );
[c29d9ce]	83
[e56cfdb0]	84	typedef std::map< std::string, DeclarationWithType *> AdapterMap;
[c29d9ce]	85	std::map< std::string, DeclarationWithType *> assignOps;
[01aeade]	86	std::stack< AdapterMap > adapters;
	87	DeclarationWithType *retval;
	88	bool useRetval;
	89	UniqueName tempNamer;
	90	};
	91
[f8b961b]	92	/// Moves polymorphic returns in function types to pointer-type parameters, adds type size and assertion parameters to parameter lists as well
[01aeade]	93	class Pass2 : public PolyMutator {
	94	public:
	95	template< typename DeclClass >
	96	DeclClass handleDecl( DeclClass decl, Type *type );
	97	virtual DeclarationWithType mutate( FunctionDecl functionDecl );
	98	virtual ObjectDecl mutate( ObjectDecl objectDecl );
	99	virtual TypeDecl mutate( TypeDecl typeDecl );
	100	virtual TypedefDecl mutate( TypedefDecl typedefDecl );
	101	virtual Type mutate( PointerType pointerType );
	102	virtual Type mutate( FunctionType funcType );
	103	private:
	104	void addAdapters( FunctionType *functionType );
[ae63a18]	105
[01aeade]	106	std::map< UniqueId, std::string > adapterName;
	107	};
	108
[f8b961b]	109	/// Replaces initialization of polymorphic values with alloca, declaration of dtype/ftype with appropriate void expression, and sizeof expressions of polymorphic types with the proper variable
[01aeade]	110	class Pass3 : public PolyMutator {
	111	public:
	112	template< typename DeclClass >
	113	DeclClass handleDecl( DeclClass decl, Type *type );
	114	virtual DeclarationWithType mutate( FunctionDecl functionDecl );
	115	virtual ObjectDecl mutate( ObjectDecl objectDecl );
	116	virtual TypedefDecl mutate( TypedefDecl objectDecl );
	117	virtual TypeDecl mutate( TypeDecl objectDecl );
	118	virtual Statement mutate( DeclStmt declStmt );
	119	virtual Type mutate( PointerType pointerType );
	120	virtual Type mutate( FunctionType funcType );
	121	private:
	122	};
	123
	124	} // anonymous namespace
	125
	126	void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) {
	127	for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) {
	128	if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) {
	129	(*i)->print( os );
	130	os << std::endl;
[6c3744e]	131	} // if
[01aeade]	132	} // for
[6c3744e]	133	}
	134
[01aeade]	135	void box( std::list< Declaration *>& translationUnit ) {
	136	Pass1 pass1;
	137	Pass2 pass2;
	138	Pass3 pass3;
	139	mutateAll( translationUnit, pass1 );
	140	mutateAll( translationUnit, pass2 );
	141	mutateAll( translationUnit, pass3 );
[6c3744e]	142	}
	143
[01aeade]	144	////////////////////////////////////////// Pass1 ////////////////////////////////////////////////////
	145
	146	namespace {
[bdf1954]	147	std::string makePolyMonoSuffix( FunctionType * function, const TyVarMap &tyVars ) {
	148	std::stringstream name;
	149
[ed1065c]	150	// NOTE: this function previously used isPolyObj, which failed to produce
	151	// the correct thing in some situations. It's not clear to me why this wasn't working.
	152
[ae63a18]	153	// if the return type or a parameter type involved polymorphic types, then the adapter will need
	154	// to take those polymorphic types as pointers. Therefore, there can be two different functions
[bdf1954]	155	// with the same mangled name, so we need to further mangle the names.
[ed1065c]	156	for ( std::list< DeclarationWithType *>::iterator retval = function->get_returnVals().begin(); retval != function->get_returnVals().end(); ++retval ) {
[ffad73a]	157	if ( isPolyType( (*retval)->get_type(), tyVars ) ) {
[ed1065c]	158	name << "P";
	159	} else {
	160	name << "M";
	161	}
[bdf1954]	162	}
	163	name << "_";
	164	std::list< DeclarationWithType *> &paramList = function->get_parameters();
	165	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
[ffad73a]	166	if ( isPolyType( (*arg)->get_type(), tyVars ) ) {
[bdf1954]	167	name << "P";
	168	} else {
[ae63a18]	169	name << "M";
[bdf1954]	170	}
	171	} // for
	172	return name.str();
	173	}
	174
	175	std::string mangleAdapterName( FunctionType * function, const TyVarMap &tyVars ) {
	176	return SymTab::Mangler::mangle( function ) + makePolyMonoSuffix( function, tyVars );
	177	}
	178
[01aeade]	179	std::string makeAdapterName( const std::string &mangleName ) {
	180	return "_adapter" + mangleName;
	181	}
[6c3744e]	182
[56fcd77]	183	Pass1::Pass1() : useRetval( false ), tempNamer( "_temp" ) {
[e56cfdb0]	184	adapters.push(AdapterMap());
[01aeade]	185	}
	186
[f2b2029]	187	// returns true if the given declaration is: (?=?)(T , T) for some T (return not checked, but maybe should be)
[01aeade]	188	bool checkAssignment( DeclarationWithType *decl, std::string &name ) {
	189	if ( decl->get_name() == "?=?" ) {
	190	if ( PointerType ptrType = dynamic_cast< PointerType >( decl->get_type() ) ) {
	191	if ( FunctionType funType = dynamic_cast< FunctionType >( ptrType->get_base() ) ) {
	192	if ( funType->get_parameters().size() == 2 ) {
	193	if ( PointerType pointer = dynamic_cast< PointerType >( funType->get_parameters().front()->get_type() ) ) {
	194	if ( TypeInstType typeInst = dynamic_cast< TypeInstType >( pointer->get_base() ) ) {
[cf16f94]	195	if ( TypeInstType typeInst2 = dynamic_cast< TypeInstType >( funType->get_parameters().back()->get_type() ) ) {
	196	if ( typeInst->get_name() == typeInst2->get_name() ) {
	197	name = typeInst->get_name();
	198	return true;
	199	} // if
	200	} // if
[01aeade]	201	} // if
	202	} // if
	203	} // if
	204	} // if
	205	} // if
	206	} // if
	207	return false;
	208	}
	209
	210	void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) {
[ed1065c]	211	// what if a nested function uses an assignment operator?
	212	// assignOps.clear();
[01aeade]	213	for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
	214	for ( std::list< DeclarationWithType >::const_iterator assert = (i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) {
	215	std::string typeName;
	216	if ( checkAssignment( *assert, typeName ) ) {
	217	assignOps[ typeName ] = *assert;
	218	} // if
	219	} // for
	220	} // for
	221	}
	222
[82dd287]	223	DeclarationWithType Pass1::mutate( FunctionDecl functionDecl ) {
[e56cfdb0]	224	if ( functionDecl->get_statements() ) { // empty routine body ?
	225	doBeginScope();
[01aeade]	226	TyVarMap oldtyVars = scopeTyVars;
[ed1065c]	227	std::map< std::string, DeclarationWithType *> oldassignOps = assignOps;
[01aeade]	228	DeclarationWithType *oldRetval = retval;
	229	bool oldUseRetval = useRetval;
[e56cfdb0]	230
	231	// process polymorphic return value
[01aeade]	232	retval = 0;
	233	std::string typeName;
	234	if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
	235	retval = functionDecl->get_functionType()->get_returnVals().front();
[ae63a18]	236
[01aeade]	237	// give names to unnamed return values
	238	if ( retval->get_name() == "" ) {
	239	retval->set_name( "_retparm" );
	240	retval->set_linkage( LinkageSpec::C );
	241	} // if
	242	} // if
[ae63a18]	243
[e56cfdb0]	244	FunctionType *functionType = functionDecl->get_functionType();
[01aeade]	245	makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
	246	findAssignOps( functionDecl->get_functionType()->get_forall() );
[e56cfdb0]	247
	248	std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
	249	std::list< FunctionType *> functions;
	250	for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
	251	for ( std::list< DeclarationWithType >::iterator assert = (tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
	252	findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter );
	253	} // for
	254	} // for
	255	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
	256	findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter );
	257	} // for
	258	AdapterMap & adapters = Pass1::adapters.top();
	259	for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]	260	std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[e56cfdb0]	261	if ( adapters.find( mangleName ) == adapters.end() ) {
	262	std::string adapterName = makeAdapterName( mangleName );
	263	adapters.insert( std::pair< std::string, DeclarationWithType >( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( funType, scopeTyVars ) ), 0 ) ) );
	264	} // if
	265	} // for
	266
[01aeade]	267	functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
[ae63a18]	268
[01aeade]	269	scopeTyVars = oldtyVars;
[ed1065c]	270	assignOps = oldassignOps;
[e56cfdb0]	271	// std::cerr << "end FunctionDecl: ";
	272	// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
	273	// std::cerr << i->first << " ";
	274	// }
	275	// std::cerr << "\n";
[01aeade]	276	retval = oldRetval;
	277	useRetval = oldUseRetval;
[e56cfdb0]	278	doEndScope();
[01aeade]	279	} // if
	280	return functionDecl;
	281	}
[6c3744e]	282
[01aeade]	283	TypeDecl Pass1::mutate( TypeDecl typeDecl ) {
	284	scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	285	return Mutator::mutate( typeDecl );
	286	}
[6c3744e]	287
[01aeade]	288	Expression Pass1::mutate( CommaExpr commaExpr ) {
	289	bool oldUseRetval = useRetval;
	290	useRetval = false;
	291	commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
	292	useRetval = oldUseRetval;
	293	commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
	294	return commaExpr;
	295	}
[6c3744e]	296
[01aeade]	297	Expression Pass1::mutate( ConditionalExpr condExpr ) {
	298	bool oldUseRetval = useRetval;
	299	useRetval = false;
	300	condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
	301	useRetval = oldUseRetval;
	302	condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
	303	condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
	304	return condExpr;
[6c3744e]	305
[01aeade]	306	}
[6c3744e]	307
[01aeade]	308	void Pass1::passTypeVars( ApplicationExpr appExpr, std::list< Expression >::iterator &arg, const TyVarMap &exprTyVars ) {
[7754cde]	309	// pass size/align for type variables
[01aeade]	310	for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
	311	ResolvExpr::EqvClass eqvClass;
	312	assert( env );
	313	if ( tyParm->second == TypeDecl::Any ) {
	314	Type *concrete = env->lookup( tyParm->first );
	315	if ( concrete ) {
	316	arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
	317	arg++;
[db0b3ce]	318	arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) );
	319	arg++;
[01aeade]	320	} else {
	321	throw SemanticError( "unbound type variable in application ", appExpr );
	322	} // if
	323	} // if
	324	} // for
[7754cde]	325
	326	// add size/align for generic types to parameter list
	327	//assert( ! appExpr->get_function()->get_results().empty() );
	328	if ( appExpr->get_function()->get_results().empty() ) return;
	329	FunctionType *funcType = getFunctionType( appExpr->get_function()->get_results().front() );
	330	assert( funcType );
[ae63a18]	331
[7754cde]	332	std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin();
	333	std::list< Expression* >::const_iterator fnArg = arg;
[69911c11]	334	std::set< std::string > seenTypes; //< names for generic types we've seen
[7754cde]	335	for ( ; fnParm != funcType->get_parameters().end() && fnArg != appExpr->get_args().end(); ++fnParm, ++fnArg ) {
	336	Type parmType = (fnParm)->get_type();
	337	if ( ! dynamic_cast< TypeInstType* >( parmType ) && isPolyType( parmType, exprTyVars ) ) {
	338	std::string sizeName = sizeofName( parmType );
	339	if ( seenTypes.count( sizeName ) ) continue;
	340
	341	assert( ! (*fnArg)->get_results().empty() );
	342	Type argType = (fnArg)->get_results().front();
	343	arg = appExpr->get_args().insert( arg, new SizeofExpr( argType->clone() ) );
	344	arg++;
	345	arg = appExpr->get_args().insert( arg, new AlignofExpr( argType->clone() ) );
	346	arg++;
	347
	348	seenTypes.insert( sizeName );
	349	}
	350	}
[01aeade]	351	}
[6c3744e]	352
[01aeade]	353	ObjectDecl Pass1::makeTemporary( Type type ) {
[68cd1ce]	354	ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
[01aeade]	355	stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
	356	return newObj;
	357	}
[6c3744e]	358
[01aeade]	359	Expression Pass1::addRetParam( ApplicationExpr appExpr, FunctionType function, Type retType, std::list< Expression *>::iterator &arg ) {
[cf16f94]	360	// *** Code Removal *** After introducing a temporary variable for all return expressions, the following code appears superfluous.
	361	// if ( useRetval ) {
	362	// assert( retval );
	363	// arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
	364	// arg++;
	365	// } else {
	366
	367	// Create temporary to hold return value of polymorphic function and produce that temporary as a result
	368	// using a comma expression. Possibly change comma expression into statement expression "{}" for multiple
	369	// return values.
	370	ObjectDecl *newObj = makeTemporary( retType->clone() );
	371	Expression *paramExpr = new VariableExpr( newObj );
	372	// If the type of the temporary is not polymorphic, box temporary by taking its address; otherwise the
	373	// temporary is already boxed and can be used directly.
[5f6c42c]	374	if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) {
[cf16f94]	375	paramExpr = new AddressExpr( paramExpr );
[01aeade]	376	} // if
[cf16f94]	377	arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call
	378	arg++;
	379	// Build a comma expression to call the function and emulate a normal return.
	380	CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
	381	commaExpr->set_env( appExpr->get_env() );
	382	appExpr->set_env( 0 );
	383	return commaExpr;
	384	// } // if
	385	// return appExpr;
[01aeade]	386	}
[6c3744e]	387
[01aeade]	388	Expression Pass1::addPolyRetParam( ApplicationExpr appExpr, FunctionType function, std::string typeName, std::list< Expression >::iterator &arg ) {
	389	ResolvExpr::EqvClass eqvClass;
	390	assert( env );
	391	Type *concrete = env->lookup( typeName );
	392	if ( concrete == 0 ) {
	393	throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
	394	} // if
	395	return addRetParam( appExpr, function, concrete, arg );
	396	}
[6c3744e]	397
[01aeade]	398	Expression Pass1::applyAdapter( ApplicationExpr appExpr, FunctionType function, std::list< Expression >::iterator &arg, const TyVarMap &tyVars ) {
	399	Expression *ret = appExpr;
[ffad73a]	400	if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]	401	ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
	402	} // if
[bdf1954]	403	std::string mangleName = mangleAdapterName( function, tyVars );
[01aeade]	404	std::string adapterName = makeAdapterName( mangleName );
[b1a6d6b]	405
[01aeade]	406	appExpr->get_args().push_front( appExpr->get_function() );
	407	appExpr->set_function( new NameExpr( adapterName ) );
[ae63a18]	408
[01aeade]	409	return ret;
	410	}
[6c3744e]	411
[01aeade]	412	void Pass1::boxParam( Type param, Expression &arg, const TyVarMap &exprTyVars ) {
	413	assert( ! arg->get_results().empty() );
[1cced28]	414	if ( isPolyType( param, exprTyVars ) ) {
[01aeade]	415	if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
	416	// if the argument's type is a type parameter, we don't need to box again!
	417	return;
	418	} else if ( arg->get_results().front()->get_isLvalue() ) {
	419	// VariableExpr and MemberExpr are lvalues
	420	arg = new AddressExpr( arg );
	421	} else {
[68cd1ce]	422	ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
[f6d7e0f]	423	newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
[01aeade]	424	stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
	425	UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
	426	assign->get_args().push_back( new VariableExpr( newObj ) );
	427	assign->get_args().push_back( arg );
	428	stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
	429	arg = new AddressExpr( new VariableExpr( newObj ) );
	430	} // if
	431	} // if
	432	}
[6c3744e]	433
[01aeade]	434	void addCast( Expression &actual, Type formal, const TyVarMap &tyVars ) {
	435	Type *newType = formal->clone();
	436	std::list< FunctionType *> functions;
	437	// instead of functions needing adapters, this really ought to look for
	438	// any function mentioning a polymorphic type
	439	findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
	440	if ( ! functions.empty() ) {
	441	actual = new CastExpr( actual, newType );
	442	} else {
	443	delete newType;
	444	} // if
	445	}
[6c3744e]	446
[01aeade]	447	void Pass1::boxParams( ApplicationExpr appExpr, FunctionType function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
	448	for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
	449	assert( arg != appExpr->get_args().end() );
	450	addCast( arg, (param)->get_type(), exprTyVars );
	451	boxParam( (param)->get_type(), arg, exprTyVars );
	452	} // for
	453	}
[6c3744e]	454
[01aeade]	455	void Pass1::addInferredParams( ApplicationExpr appExpr, FunctionType functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
	456	std::list< Expression *>::iterator cur = arg;
	457	for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
	458	for ( std::list< DeclarationWithType >::iterator assert = (tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
	459	InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
[698664b3]	460	assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" );
[01aeade]	461	Expression *newExpr = inferParam->second.expr->clone();
	462	addCast( newExpr, (*assert)->get_type(), tyVars );
	463	boxParam( (*assert)->get_type(), newExpr, tyVars );
	464	appExpr->get_args().insert( cur, newExpr );
	465	} // for
	466	} // for
	467	}
[6c3744e]	468
[01aeade]	469	void makeRetParm( FunctionType *funcType ) {
	470	DeclarationWithType *retParm = funcType->get_returnVals().front();
[6c3744e]	471
[01aeade]	472	// make a new parameter that is a pointer to the type of the old return value
	473	retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
	474	funcType->get_parameters().push_front( retParm );
[6c3744e]	475
[01aeade]	476	// we don't need the return value any more
	477	funcType->get_returnVals().clear();
	478	}
[6c3744e]	479
[01aeade]	480	FunctionType makeAdapterType( FunctionType adaptee, const TyVarMap &tyVars ) {
	481	// actually make the adapter type
	482	FunctionType *adapter = adaptee->clone();
[ffad73a]	483	if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]	484	makeRetParm( adapter );
	485	} // if
[68cd1ce]	486	adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
[01aeade]	487	return adapter;
	488	}
[6c3744e]	489
[01aeade]	490	Expression makeAdapterArg( DeclarationWithType param, DeclarationWithType arg, DeclarationWithType realParam, const TyVarMap &tyVars ) {
	491	assert( param );
	492	assert( arg );
[ffad73a]	493	if ( isPolyType( realParam->get_type(), tyVars ) ) {
	494	// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) {
	495	// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() );
	496	// } else {
[e56cfdb0]	497	if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) {
	498	UntypedExpr deref = new UntypedExpr( new NameExpr( "?" ) );
	499	deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
	500	deref->get_results().push_back( arg->get_type()->clone() );
	501	return deref;
	502	} // if
[ffad73a]	503	// }
[01aeade]	504	} // if
	505	return new VariableExpr( param );
	506	}
[6c3744e]	507
[01aeade]	508	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 ) {
	509	UniqueName paramNamer( "_p" );
	510	for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
	511	if ( (*param)->get_name() == "" ) {
	512	(*param)->set_name( paramNamer.newName() );
	513	(*param)->set_linkage( LinkageSpec::C );
	514	} // if
	515	adapteeApp->get_args().push_back( makeAdapterArg( param, arg, *realParam, tyVars ) );
	516	} // for
	517	}
[6c3744e]	518
[b1a6d6b]	519
	520
[01aeade]	521	FunctionDecl Pass1::makeAdapter( FunctionType adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
	522	FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
	523	adapterType = ScrubTyVars::scrub( adapterType, tyVars );
	524	DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
	525	adapteeDecl->set_name( "_adaptee" );
	526	ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
	527	Statement *bodyStmt;
[ae63a18]	528
[01aeade]	529	std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
	530	std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
	531	std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
	532	for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
	533	assert( tyArg != realType->get_forall().end() );
	534	std::list< DeclarationWithType >::iterator assertArg = (tyArg)->get_assertions().begin();
	535	std::list< DeclarationWithType >::iterator assertParam = (tyParam)->get_assertions().begin();
	536	std::list< DeclarationWithType >::iterator realAssertParam = (realTyParam)->get_assertions().begin();
	537	for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
	538	assert( assertArg != (*tyArg)->get_assertions().end() );
	539	adapteeApp->get_args().push_back( makeAdapterArg( assertParam, assertArg, *realAssertParam, tyVars ) );
	540	} // for
	541	} // for
[ae63a18]	542
[01aeade]	543	std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
	544	std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
	545	std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
	546	param++; // skip adaptee parameter
	547	if ( realType->get_returnVals().empty() ) {
	548	addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
	549	bodyStmt = new ExprStmt( noLabels, adapteeApp );
[ffad73a]	550	} else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]	551	if ( (*param)->get_name() == "" ) {
	552	(*param)->set_name( "_ret" );
	553	(*param)->set_linkage( LinkageSpec::C );
	554	} // if
	555	UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
	556	UntypedExpr deref = new UntypedExpr( new NameExpr( "?" ) );
	557	deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
	558	assign->get_args().push_back( deref );
	559	addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
	560	assign->get_args().push_back( adapteeApp );
	561	bodyStmt = new ExprStmt( noLabels, assign );
	562	} else {
	563	// adapter for a function that returns a monomorphic value
	564	addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
	565	bodyStmt = new ReturnStmt( noLabels, adapteeApp );
	566	} // if
	567	CompoundStmt *adapterBody = new CompoundStmt( noLabels );
	568	adapterBody->get_kids().push_back( bodyStmt );
	569	std::string adapterName = makeAdapterName( mangleName );
[de62360d]	570	return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
[01aeade]	571	}
[6c3744e]	572
[c29d9ce]	573	void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
[e497c1d]	574	// collect a list of function types passed as parameters or implicit parameters (assertions)
[01aeade]	575	std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
	576	std::list< FunctionType *> functions;
	577	for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
	578	for ( std::list< DeclarationWithType >::iterator assert = (tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
	579	findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
	580	} // for
	581	} // for
	582	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
	583	findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
	584	} // for
[e497c1d]	585
[e56cfdb0]	586	// parameter function types for which an appropriate adapter has been generated. we cannot use the types
	587	// after applying substitutions, since two different parameter types may be unified to the same type
[01aeade]	588	std::set< std::string > adaptersDone;
[e497c1d]	589
[01aeade]	590	for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[c29d9ce]	591	FunctionType originalFunction = (funType)->clone();
[01aeade]	592	FunctionType realFunction = (funType)->clone();
	593	std::string mangleName = SymTab::Mangler::mangle( realFunction );
[e497c1d]	594
[e56cfdb0]	595	// only attempt to create an adapter or pass one as a parameter if we haven't already done so for this
	596	// pre-substitution parameter function type.
[01aeade]	597	if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
[e497c1d]	598	adaptersDone.insert( adaptersDone.begin(), mangleName );
[ae63a18]	599
[e56cfdb0]	600	// apply substitution to type variables to figure out what the adapter's type should look like
[e497c1d]	601	assert( env );
	602	env->apply( realFunction );
[ae63a18]	603	mangleName = SymTab::Mangler::mangle( realFunction );
[bdf1954]	604	mangleName += makePolyMonoSuffix( originalFunction, exprTyVars );
[e497c1d]	605
[e56cfdb0]	606	AdapterMap & adapters = Pass1::adapters.top();
	607	AdapterMap::iterator adapter = adapters.find( mangleName );
	608	if ( adapter == adapters.end() ) {
	609	// adapter has not been created yet in the current scope, so define it
	610	FunctionDecl newAdapter = makeAdapter( funType, realFunction, mangleName, exprTyVars );
	611	adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) );
	612	stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
[c29d9ce]	613	} // if
[e56cfdb0]	614	assert( adapter != adapters.end() );
	615
	616	// add the appropriate adapter as a parameter
	617	appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
[01aeade]	618	} // if
	619	} // for
[e56cfdb0]	620	} // passAdapters
[6c3744e]	621
[78dd0da]	622	Expression makeIncrDecrExpr( ApplicationExpr appExpr, Type *polyType, bool isIncr ) {
[01aeade]	623	NameExpr *opExpr;
	624	if ( isIncr ) {
	625	opExpr = new NameExpr( "?+=?" );
	626	} else {
	627	opExpr = new NameExpr( "?-=?" );
[6c3744e]	628	} // if
[01aeade]	629	UntypedExpr *addAssign = new UntypedExpr( opExpr );
	630	if ( AddressExpr address = dynamic_cast< AddressExpr >( appExpr->get_args().front() ) ) {
	631	addAssign->get_args().push_back( address->get_arg() );
	632	} else {
	633	addAssign->get_args().push_back( appExpr->get_args().front() );
[6c3744e]	634	} // if
[78dd0da]	635	addAssign->get_args().push_back( new NameExpr( sizeofName( polyType ) ) );
[01aeade]	636	addAssign->get_results().front() = appExpr->get_results().front()->clone();
	637	if ( appExpr->get_env() ) {
	638	addAssign->set_env( appExpr->get_env() );
[6c3744e]	639	appExpr->set_env( 0 );
	640	} // if
[01aeade]	641	appExpr->get_args().clear();
	642	delete appExpr;
	643	return addAssign;
	644	}
	645
	646	Expression Pass1::handleIntrinsics( ApplicationExpr appExpr ) {
	647	if ( VariableExpr varExpr = dynamic_cast< VariableExpr >( appExpr->get_function() ) ) {
	648	if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
	649	if ( varExpr->get_var()->get_name() == "?[?]" ) {
	650	assert( ! appExpr->get_results().empty() );
	651	assert( appExpr->get_args().size() == 2 );
[ffad73a]	652	Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
	653	Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
[ae63a18]	654	assert( ! baseType1 \|\| ! baseType2 ); // the arguments cannot both be polymorphic pointers
[01aeade]	655	UntypedExpr *ret = 0;
[ae63a18]	656	if ( baseType1 \|\| baseType2 ) { // one of the arguments is a polymorphic pointer
[01aeade]	657	ret = new UntypedExpr( new NameExpr( "?+?" ) );
	658	} // if
[ffad73a]	659	if ( baseType1 ) {
[01aeade]	660	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	661	multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]	662	multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]	663	ret->get_args().push_back( appExpr->get_args().front() );
	664	ret->get_args().push_back( multiply );
[ffad73a]	665	} else if ( baseType2 ) {
[01aeade]	666	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	667	multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]	668	multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]	669	ret->get_args().push_back( multiply );
	670	ret->get_args().push_back( appExpr->get_args().back() );
	671	} // if
[ffad73a]	672	if ( baseType1 \|\| baseType2 ) {
[01aeade]	673	ret->get_results().push_front( appExpr->get_results().front()->clone() );
	674	if ( appExpr->get_env() ) {
	675	ret->set_env( appExpr->get_env() );
	676	appExpr->set_env( 0 );
	677	} // if
	678	appExpr->get_args().clear();
	679	delete appExpr;
	680	return ret;
	681	} // if
	682	} else if ( varExpr->get_var()->get_name() == "*?" ) {
	683	assert( ! appExpr->get_results().empty() );
	684	assert( ! appExpr->get_args().empty() );
[ffad73a]	685	if ( isPolyType( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]	686	Expression *ret = appExpr->get_args().front();
	687	delete ret->get_results().front();
	688	ret->get_results().front() = appExpr->get_results().front()->clone();
	689	if ( appExpr->get_env() ) {
	690	ret->set_env( appExpr->get_env() );
	691	appExpr->set_env( 0 );
	692	} // if
	693	appExpr->get_args().clear();
	694	delete appExpr;
	695	return ret;
	696	} // if
	697	} else if ( varExpr->get_var()->get_name() == "?++" \|\| varExpr->get_var()->get_name() == "?--" ) {
	698	assert( ! appExpr->get_results().empty() );
	699	assert( appExpr->get_args().size() == 1 );
[ffad73a]	700	if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]	701	Type *tempType = appExpr->get_results().front()->clone();
	702	if ( env ) {
	703	env->apply( tempType );
	704	} // if
	705	ObjectDecl *newObj = makeTemporary( tempType );
	706	VariableExpr *tempExpr = new VariableExpr( newObj );
	707	UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
	708	assignExpr->get_args().push_back( tempExpr->clone() );
	709	if ( AddressExpr address = dynamic_cast< AddressExpr >( appExpr->get_args().front() ) ) {
	710	assignExpr->get_args().push_back( address->get_arg()->clone() );
	711	} else {
	712	assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
	713	} // if
[ffad73a]	714	CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) );
[01aeade]	715	return new CommaExpr( firstComma, tempExpr );
	716	} // if
	717	} else if ( varExpr->get_var()->get_name() == "++?" \|\| varExpr->get_var()->get_name() == "--?" ) {
	718	assert( ! appExpr->get_results().empty() );
	719	assert( appExpr->get_args().size() == 1 );
[ffad73a]	720	if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
	721	return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" );
[01aeade]	722	} // if
	723	} else if ( varExpr->get_var()->get_name() == "?+?" \|\| varExpr->get_var()->get_name() == "?-?" ) {
	724	assert( ! appExpr->get_results().empty() );
	725	assert( appExpr->get_args().size() == 2 );
[ffad73a]	726	Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
	727	Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
	728	if ( baseType1 && baseType2 ) {
[01aeade]	729	UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
	730	divide->get_args().push_back( appExpr );
[ffad73a]	731	divide->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]	732	divide->get_results().push_front( appExpr->get_results().front()->clone() );
	733	if ( appExpr->get_env() ) {
	734	divide->set_env( appExpr->get_env() );
	735	appExpr->set_env( 0 );
	736	} // if
	737	return divide;
[ffad73a]	738	} else if ( baseType1 ) {
[01aeade]	739	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	740	multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]	741	multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]	742	appExpr->get_args().back() = multiply;
[ffad73a]	743	} else if ( baseType2 ) {
[01aeade]	744	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	745	multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]	746	multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]	747	appExpr->get_args().front() = multiply;
	748	} // if
	749	} else if ( varExpr->get_var()->get_name() == "?+=?" \|\| varExpr->get_var()->get_name() == "?-=?" ) {
	750	assert( ! appExpr->get_results().empty() );
	751	assert( appExpr->get_args().size() == 2 );
[ffad73a]	752	Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env );
	753	if ( baseType ) {
[01aeade]	754	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	755	multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]	756	multiply->get_args().push_back( new NameExpr( sizeofName( baseType ) ) );
[01aeade]	757	appExpr->get_args().back() = multiply;
	758	} // if
	759	} // if
	760	return appExpr;
	761	} // if
[6c3744e]	762	} // if
[01aeade]	763	return 0;
	764	}
[6c3744e]	765
[01aeade]	766	Expression Pass1::mutate( ApplicationExpr appExpr ) {
[e56cfdb0]	767	// std::cerr << "mutate appExpr: ";
	768	// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
	769	// std::cerr << i->first << " ";
	770	// }
	771	// std::cerr << "\n";
[01aeade]	772	bool oldUseRetval = useRetval;
	773	useRetval = false;
	774	appExpr->get_function()->acceptMutator( *this );
	775	mutateAll( appExpr->get_args(), *this );
	776	useRetval = oldUseRetval;
[ae63a18]	777
[01aeade]	778	assert( ! appExpr->get_function()->get_results().empty() );
	779	PointerType pointer = dynamic_cast< PointerType >( appExpr->get_function()->get_results().front() );
	780	assert( pointer );
	781	FunctionType function = dynamic_cast< FunctionType >( pointer->get_base() );
	782	assert( function );
[ae63a18]	783
[01aeade]	784	if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
	785	return newExpr;
	786	} // if
[ae63a18]	787
[01aeade]	788	Expression *ret = appExpr;
[ae63a18]	789
[01aeade]	790	std::list< Expression *>::iterator arg = appExpr->get_args().begin();
	791	std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
[ae63a18]	792
[01aeade]	793	std::string typeName;
	794	if ( isPolyRet( function, typeName ) ) {
	795	ret = addPolyRetParam( appExpr, function, typeName, arg );
	796	} else if ( needsAdapter( function, scopeTyVars ) ) {
[e56cfdb0]	797	// std::cerr << "needs adapter: ";
	798	// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
	799	// std::cerr << i->first << " ";
	800	// }
	801	// std::cerr << "\n";
[01aeade]	802	// change the application so it calls the adapter rather than the passed function
	803	ret = applyAdapter( appExpr, function, arg, scopeTyVars );
	804	} // if
	805	arg = appExpr->get_args().begin();
[ae63a18]	806
[01aeade]	807	TyVarMap exprTyVars;
	808	makeTyVarMap( function, exprTyVars );
[ae63a18]	809
[01aeade]	810	passTypeVars( appExpr, arg, exprTyVars );
	811	addInferredParams( appExpr, function, arg, exprTyVars );
[51b7345]	812
[01aeade]	813	arg = paramBegin;
[ae63a18]	814
[01aeade]	815	boxParams( appExpr, function, arg, exprTyVars );
[6c3744e]	816
[01aeade]	817	passAdapters( appExpr, function, exprTyVars );
[6c3744e]	818
[01aeade]	819	return ret;
	820	}
[6c3744e]	821
[01aeade]	822	Expression Pass1::mutate( UntypedExpr expr ) {
[ffad73a]	823	if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]	824	if ( NameExpr name = dynamic_cast< NameExpr >( expr->get_function() ) ) {
	825	if ( name->get_name() == "*?" ) {
	826	Expression *ret = expr->get_args().front();
	827	expr->get_args().clear();
	828	delete expr;
	829	return ret->acceptMutator( *this );
	830	} // if
	831	} // if
	832	} // if
	833	return PolyMutator::mutate( expr );
	834	}
[6c3744e]	835
[01aeade]	836	Expression Pass1::mutate( AddressExpr addrExpr ) {
	837	assert( ! addrExpr->get_arg()->get_results().empty() );
[cf16f94]	838
	839	bool needs = false;
	840	if ( UntypedExpr expr = dynamic_cast< UntypedExpr >( addrExpr->get_arg() ) ) {
[5f6c42c]	841	if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[cf16f94]	842	if ( NameExpr name = dynamic_cast< NameExpr >( expr->get_function() ) ) {
	843	if ( name->get_name() == "*?" ) {
	844	if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) {
	845	assert( ! appExpr->get_function()->get_results().empty() );
	846	PointerType pointer = dynamic_cast< PointerType >( appExpr->get_function()->get_results().front() );
	847	assert( pointer );
	848	FunctionType function = dynamic_cast< FunctionType >( pointer->get_base() );
	849	assert( function );
	850	needs = needsAdapter( function, scopeTyVars );
	851	} // if
	852	} // if
	853	} // if
	854	} // if
	855	} // if
[01aeade]	856	addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
[5f6c42c]	857	if ( isPolyType( addrExpr->get_arg()->get_results().front(), scopeTyVars, env ) \|\| needs ) {
[01aeade]	858	Expression *ret = addrExpr->get_arg();
	859	delete ret->get_results().front();
	860	ret->get_results().front() = addrExpr->get_results().front()->clone();
	861	addrExpr->set_arg( 0 );
	862	delete addrExpr;
	863	return ret;
	864	} else {
	865	return addrExpr;
	866	} // if
	867	}
[6c3744e]	868
[cf16f94]	869	Statement * Pass1::mutate( ReturnStmt *returnStmt ) {
	870	if ( retval && returnStmt->get_expr() ) {
	871	assert( ! returnStmt->get_expr()->get_results().empty() );
	872	// *** Code Removal *** After introducing a temporary variable for all return expressions, the following code appears superfluous.
	873	// if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) {
[ae63a18]	874	// by this point, a cast expr on a polymorphic return value is redundant
[cf16f94]	875	while ( CastExpr castExpr = dynamic_cast< CastExpr >( returnStmt->get_expr() ) ) {
	876	returnStmt->set_expr( castExpr->get_arg() );
	877	returnStmt->get_expr()->set_env( castExpr->get_env() );
	878	castExpr->set_env( 0 );
	879	castExpr->set_arg( 0 );
	880	delete castExpr;
[5f6c42c]	881	} //while
[cf16f94]	882	TypeInstType typeInst = dynamic_cast< TypeInstType >( retval->get_type() );
	883	assert( typeInst );
	884	std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
	885	if ( assignIter == assignOps.end() ) {
	886	throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() );
[01aeade]	887	} // if
[cf16f94]	888	ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
	889	Expression *retParm = new NameExpr( retval->get_name() );
	890	retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
	891	assignExpr->get_args().push_back( retParm );
	892	assignExpr->get_args().push_back( returnStmt->get_expr() );
	893	stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
	894	// } else {
	895	// useRetval = true;
	896	// stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) );
	897	// useRetval = false;
	898	// } // if
	899	returnStmt->set_expr( 0 );
[01aeade]	900	} else {
[cf16f94]	901	returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) );
[01aeade]	902	} // if
[cf16f94]	903	return returnStmt;
[01aeade]	904	}
[6c3744e]	905
[01aeade]	906	Type * Pass1::mutate( PointerType *pointerType ) {
	907	TyVarMap oldtyVars = scopeTyVars;
	908	makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]	909
[01aeade]	910	Type *ret = Mutator::mutate( pointerType );
[ae63a18]	911
[01aeade]	912	scopeTyVars = oldtyVars;
	913	return ret;
	914	}
[6c3744e]	915
[01aeade]	916	Type * Pass1::mutate( FunctionType *functionType ) {
	917	TyVarMap oldtyVars = scopeTyVars;
	918	makeTyVarMap( functionType, scopeTyVars );
[ae63a18]	919
[01aeade]	920	Type *ret = Mutator::mutate( functionType );
[ae63a18]	921
[01aeade]	922	scopeTyVars = oldtyVars;
	923	return ret;
	924	}
[51b7345]	925
[01aeade]	926	void Pass1::doBeginScope() {
[bdf1954]	927	// push a copy of the current map
[e56cfdb0]	928	adapters.push(adapters.top());
[01aeade]	929	}
[b1a6d6b]	930
[01aeade]	931	void Pass1::doEndScope() {
	932	adapters.pop();
	933	}
[51b7345]	934
	935	////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////
	936
[01aeade]	937	void Pass2::addAdapters( FunctionType *functionType ) {
	938	std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
	939	std::list< FunctionType *> functions;
	940	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
	941	Type orig = (arg)->get_type();
	942	findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
	943	(*arg)->set_type( orig );
	944	}
	945	std::set< std::string > adaptersDone;
	946	for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]	947	std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[01aeade]	948	if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
	949	std::string adapterName = makeAdapterName( mangleName );
[68cd1ce]	950	paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
[01aeade]	951	adaptersDone.insert( adaptersDone.begin(), mangleName );
	952	}
	953	}
[5f6c42c]	954	// deleteAll( functions );
[01aeade]	955	}
[6c3744e]	956
[01aeade]	957	template< typename DeclClass >
	958	DeclClass * Pass2::handleDecl( DeclClass decl, Type type ) {
	959	DeclClass ret = static_cast< DeclClass >( Mutator::mutate( decl ) );
[6c3744e]	960
[01aeade]	961	return ret;
	962	}
[6c3744e]	963
[01aeade]	964	DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
	965	return handleDecl( functionDecl, functionDecl->get_functionType() );
	966	}
[6c3744e]	967
[01aeade]	968	ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
	969	return handleDecl( objectDecl, objectDecl->get_type() );
	970	}
[6c3744e]	971
[01aeade]	972	TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
	973	scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	974	if ( typeDecl->get_base() ) {
	975	return handleDecl( typeDecl, typeDecl->get_base() );
	976	} else {
	977	return Mutator::mutate( typeDecl );
	978	}
	979	}
[6c3744e]	980
[01aeade]	981	TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
	982	return handleDecl( typedefDecl, typedefDecl->get_base() );
	983	}
[6c3744e]	984
[01aeade]	985	Type * Pass2::mutate( PointerType *pointerType ) {
	986	TyVarMap oldtyVars = scopeTyVars;
	987	makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]	988
[01aeade]	989	Type *ret = Mutator::mutate( pointerType );
[ae63a18]	990
[01aeade]	991	scopeTyVars = oldtyVars;
	992	return ret;
	993	}
[6c3744e]	994
[01aeade]	995	Type Pass2::mutate( FunctionType funcType ) {
	996	TyVarMap oldtyVars = scopeTyVars;
	997	makeTyVarMap( funcType, scopeTyVars );
[7754cde]	998
	999	// move polymorphic return type to parameter list
[01aeade]	1000	std::string typeName;
	1001	if ( isPolyRet( funcType, typeName ) ) {
	1002	DeclarationWithType *ret = funcType->get_returnVals().front();
	1003	ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) );
	1004	funcType->get_parameters().push_front( ret );
	1005	funcType->get_returnVals().pop_front();
	1006	}
[7754cde]	1007
	1008	// add size/align and assertions for type parameters to parameter list
[01aeade]	1009	std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
	1010	std::list< DeclarationWithType *> inferredParams;
[78dd0da]	1011	ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
[f8b961b]	1012	// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
[01aeade]	1013	for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
[db0b3ce]	1014	ObjectDecl sizeParm, alignParm;
	1015	// add all size and alignment parameters to parameter list
[01aeade]	1016	if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
[78dd0da]	1017	TypeInstType parmType( Type::Qualifiers(), (tyParm)->get_name(), tyParm );
[ae63a18]	1018
[78dd0da]	1019	sizeParm = newObj.clone();
	1020	sizeParm->set_name( sizeofName( &parmType ) );
[db0b3ce]	1021	last = funcType->get_parameters().insert( last, sizeParm );
	1022	++last;
[78dd0da]	1023
	1024	alignParm = newObj.clone();
	1025	alignParm->set_name( alignofName( &parmType ) );
[db0b3ce]	1026	last = funcType->get_parameters().insert( last, alignParm );
[01aeade]	1027	++last;
	1028	}
[e56cfdb0]	1029	// move all assertions into parameter list
[01aeade]	1030	for ( std::list< DeclarationWithType >::iterator assert = (tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
[f8b961b]	1031	// assert = (assert)->acceptMutator( *this );
[01aeade]	1032	inferredParams.push_back( *assert );
	1033	}
	1034	(*tyParm)->get_assertions().clear();
	1035	}
[7754cde]	1036
	1037	// add size/align for generic types to parameter list
	1038	std::set< std::string > seenTypes; //< sizeofName for generic types we've seen
	1039	for ( std::list< DeclarationWithType* >::const_iterator fnParm = last; fnParm != funcType->get_parameters().end(); ++fnParm ) {
	1040	Type parmType = (fnParm)->get_type();
	1041	if ( ! dynamic_cast< TypeInstType* >( parmType ) && isPolyType( parmType, scopeTyVars ) ) {
	1042	std::string sizeName = sizeofName( parmType );
	1043	if ( seenTypes.count( sizeName ) ) continue;
[ae63a18]	1044
[7754cde]	1045	ObjectDecl sizeParm, alignParm;
	1046	sizeParm = newObj.clone();
	1047	sizeParm->set_name( sizeName );
	1048	last = funcType->get_parameters().insert( last, sizeParm );
	1049	++last;
	1050
	1051	alignParm = newObj.clone();
	1052	alignParm->set_name( alignofName( parmType ) );
	1053	last = funcType->get_parameters().insert( last, alignParm );
	1054	++last;
	1055
	1056	seenTypes.insert( sizeName );
	1057	}
	1058	}
	1059
	1060	// splice assertion parameters into parameter list
[01aeade]	1061	funcType->get_parameters().splice( last, inferredParams );
	1062	addAdapters( funcType );
	1063	mutateAll( funcType->get_returnVals(), *this );
	1064	mutateAll( funcType->get_parameters(), *this );
[ae63a18]	1065
[01aeade]	1066	scopeTyVars = oldtyVars;
	1067	return funcType;
	1068	}
[51b7345]	1069
	1070	////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////
	1071
[01aeade]	1072	template< typename DeclClass >
	1073	DeclClass * Pass3::handleDecl( DeclClass decl, Type type ) {
	1074	TyVarMap oldtyVars = scopeTyVars;
	1075	makeTyVarMap( type, scopeTyVars );
[ae63a18]	1076
[01aeade]	1077	DeclClass ret = static_cast< DeclClass >( Mutator::mutate( decl ) );
	1078	ScrubTyVars::scrub( decl, scopeTyVars );
[6c3744e]	1079
[01aeade]	1080	scopeTyVars = oldtyVars;
	1081	return ret;
	1082	}
[6c3744e]	1083
[01aeade]	1084	ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
	1085	return handleDecl( objectDecl, objectDecl->get_type() );
	1086	}
[6c3744e]	1087
[01aeade]	1088	DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
	1089	return handleDecl( functionDecl, functionDecl->get_functionType() );
	1090	}
[6c3744e]	1091
[01aeade]	1092	TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
	1093	return handleDecl( typedefDecl, typedefDecl->get_base() );
	1094	}
[6c3744e]	1095
[01aeade]	1096	TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
[f8b961b]	1097	// Initializer *init = 0;
	1098	// std::list< Expression *> designators;
	1099	// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	1100	// if ( typeDecl->get_base() ) {
	1101	// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
	1102	// }
	1103	// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );
[51b7345]	1104
[01aeade]	1105	scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	1106	return Mutator::mutate( typeDecl );
	1107	}
[51b7345]	1108
[01aeade]	1109	Type * Pass3::mutate( PointerType *pointerType ) {
	1110	TyVarMap oldtyVars = scopeTyVars;
	1111	makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]	1112
[01aeade]	1113	Type *ret = Mutator::mutate( pointerType );
[ae63a18]	1114
[01aeade]	1115	scopeTyVars = oldtyVars;
	1116	return ret;
	1117	}
[6c3744e]	1118
[01aeade]	1119	Type * Pass3::mutate( FunctionType *functionType ) {
	1120	TyVarMap oldtyVars = scopeTyVars;
	1121	makeTyVarMap( functionType, scopeTyVars );
[ae63a18]	1122
[01aeade]	1123	Type *ret = Mutator::mutate( functionType );
[ae63a18]	1124
[01aeade]	1125	scopeTyVars = oldtyVars;
	1126	return ret;
[6c3744e]	1127	}
[51b7345]	1128
[01aeade]	1129	Statement Pass3::mutate( DeclStmt declStmt ) {
	1130	if ( ObjectDecl objectDecl = dynamic_cast< ObjectDecl >( declStmt->get_decl() ) ) {
[ffad73a]	1131	if ( isPolyType( objectDecl->get_type(), scopeTyVars ) ) {
[e01559c]	1132	// change initialization of a polymorphic value object
	1133	// to allocate storage with alloca
[ffad73a]	1134	Type *declType = objectDecl->get_type();
[01aeade]	1135	UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
[ffad73a]	1136	alloc->get_args().push_back( new NameExpr( sizeofName( declType ) ) );
[e01559c]	1137
	1138	delete objectDecl->get_init();
	1139
	1140	std::list<Expression*> designators;
	1141	objectDecl->set_init( new SingleInit( alloc, designators ) );
[01aeade]	1142	}
	1143	}
	1144	return Mutator::mutate( declStmt );
	1145	}
	1146	} // anonymous namespace
[51b7345]	1147	} // namespace GenPoly
[01aeade]	1148
[51587aa]	1149	// Local Variables: //
	1150	// tab-width: 4 //
	1151	// mode: c++ //
	1152	// compile-command: "make install" //
	1153	// End: //

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