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source: src/Parser/ExpressionNode.cc@ b67dc146

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Last change on this file since b67dc146 was 630a82a, checked in by Peter A. Buhr <pabuhr@…>, 10 years ago
C99 compound literals now work, comment rational code, clean up hoisting AddVisit
Property mode set to `100644`
File size: 28.9 KB

Rev	Line
[b87a5ed]	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	//
	7	// ExpressionNode.cc --
	8	//
	9	// Author : Rodolfo G. Esteves
	10	// Created On : Sat May 16 13:17:07 2015
[097e2b0]	11	// Last Modified By : Peter A. Buhr
[630a82a]	12	// Last Modified On : Fri Apr 8 15:43:05 2016
	13	// Update Count : 296
[b87a5ed]	14	//
	15
[51b73452]	16	#include <cassert>
	17	#include <cctype>
	18	#include <algorithm>
[59db689]	19	#include <sstream>
	20	#include <cstdio>
	21	#include <climits>
[51b73452]	22
	23	#include "ParseNode.h"
[630a82a]	24	#include "TypeData.h"
[51b73452]	25	#include "SynTree/Constant.h"
	26	#include "SynTree/Expression.h"
[630a82a]	27	#include "SynTree/Declaration.h"
[d3b7937]	28	#include "Common/UnimplementedError.h"
[51b73452]	29	#include "parseutility.h"
[d3b7937]	30	#include "Common/utility.h"
[51b73452]	31
	32	using namespace std;
	33
[3848e0e]	34	ExpressionNode::ExpressionNode() : ParseNode(), argName( 0 ) {}
[51b73452]	35
[e869d663]	36	ExpressionNode::ExpressionNode( const string *name ) : ParseNode( name ), argName( 0 ) {}
[51b73452]	37
[3848e0e]	38	ExpressionNode::ExpressionNode( const ExpressionNode &other ) : ParseNode( other.name ) {
[b87a5ed]	39	if ( other.argName ) {
	40	argName = other.argName->clone();
	41	} else {
	42	argName = 0;
	43	} // if
[51b73452]	44	}
	45
[7f5566b]	46	ExpressionNode * ExpressionNode::set_argName( const std::string *aName ) {
[b87a5ed]	47	argName = new VarRefNode( aName );
	48	return this;
[51b73452]	49	}
	50
[7f5566b]	51	ExpressionNode * ExpressionNode::set_argName( ExpressionNode *aDesignator ) {
[b87a5ed]	52	argName = aDesignator;
	53	return this;
[51b73452]	54	}
	55
	56	void ExpressionNode::printDesignation( std::ostream &os, int indent ) const {
[b87a5ed]	57	if ( argName ) {
[59db689]	58	os << string( indent, ' ' ) << "(designated by: ";
[b87a5ed]	59	argName->printOneLine( os, indent );
	60	os << ")" << std::endl;
	61	} // if
[51b73452]	62	}
	63
[cd623a4]	64	//##############################################################################
	65
[3848e0e]	66	NullExprNode::NullExprNode() {}
[51b73452]	67
[3848e0e]	68	NullExprNode *NullExprNode::clone() const {
[b87a5ed]	69	return new NullExprNode();
[51b73452]	70	}
	71
[bdd516a]	72	void NullExprNode::print( std::ostream & os, int indent ) const {
[b87a5ed]	73	printDesignation( os );
	74	os << "null expression";
[51b73452]	75	}
	76
[bdd516a]	77	void NullExprNode::printOneLine( std::ostream & os, int indent ) const {
[b87a5ed]	78	printDesignation( os );
	79	os << "null";
[51b73452]	80	}
	81
[3848e0e]	82	Expression *NullExprNode::build() const {
[b87a5ed]	83	return 0;
[51b73452]	84	}
	85
[a08ba92]	86	CommaExprNode ExpressionNode::add_to_list( ExpressionNode exp ) {
[b87a5ed]	87	return new CommaExprNode( this, exp );
[51b73452]	88	}
	89
[cd623a4]	90	//##############################################################################
	91
	92	static inline bool checkU( char c ) { return c == 'u' \|\| c == 'U'; }
	93	static inline bool checkL( char c ) { return c == 'l' \|\| c == 'L'; }
	94	static inline bool checkF( char c ) { return c == 'f' \|\| c == 'F'; }
[5721a6d]	95	static inline bool checkD( char c ) { return c == 'd' \|\| c == 'D'; }
	96	static inline bool checkI( char c ) { return c == 'i' \|\| c == 'I'; }
[cd623a4]	97	static inline bool checkX( char c ) { return c == 'x' \|\| c == 'X'; }
	98
[5f2f2d7]	99	// Difficult to separate extra parts of constants during lexing because actions are not allow in the middle of patterns:
[cd623a4]	100	//
	101	// prefix action constant action suffix
	102	//
	103	// Alternatively, breaking a pattern using BEGIN does not work if the following pattern can be empty:
	104	//
	105	// constant BEGIN CONT ...
	106	// <CONT>(...)? BEGIN 0 ... // possible empty suffix
	107	//
	108	// because the CONT rule is NOT triggered if the pattern is empty. Hence, constants are reparsed here to determine their
	109	// type.
[51b73452]	110
[59db689]	111	ConstantNode::ConstantNode( Type t, string inVal ) : type( t ), value( inVal ) {
[cd623a4]	112	// lexing divides constants into 4 kinds
[a08ba92]	113	switch ( type ) {
[59db689]	114	case Integer:
[b87a5ed]	115	{
[59db689]	116	static const BasicType::Kind kind[2][3] = {
	117	{ BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt },
	118	{ BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt },
	119	};
	120	bool dec = true, Unsigned = false; // decimal, unsigned constant
	121	int size; // 0 => int, 1 => long, 2 => long long
[5721a6d]	122	unsigned long long v; // converted integral value
	123	size_t last = value.length() - 1; // last character of constant
[59db689]	124
[cd623a4]	125	if ( value[0] == '0' ) { // octal constant ?
[59db689]	126	dec = false;
[cd623a4]	127	if ( last != 0 && checkX( value[1] ) ) { // hex constant ?
[59db689]	128	sscanf( (char *)value.c_str(), "%llx", &v );
	129	//printf( "%llx %llu\n", v, v );
	130	} else {
	131	sscanf( (char *)value.c_str(), "%llo", &v );
	132	//printf( "%llo %llu\n", v, v );
	133	} // if
[cd623a4]	134	} else { // decimal constant ?
[5f2f2d7]	135	sscanf( (char *)value.c_str(), "%llu", &v );
[59db689]	136	//printf( "%llu %llu\n", v, v );
	137	} // if
	138
	139	if ( v <= INT_MAX ) { // signed int
	140	size = 0;
[5f2f2d7]	141	} else if ( v <= UINT_MAX && ! dec ) { // unsigned int
[59db689]	142	size = 0;
[5f2f2d7]	143	Unsigned = true; // unsigned
[59db689]	144	} else if ( v <= LONG_MAX ) { // signed long int
	145	size = 1;
[5f2f2d7]	146	} else if ( v <= ULONG_MAX && ( ! dec \|\| LONG_MAX == LLONG_MAX ) ) { // signed long int
[59db689]	147	size = 1;
[5f2f2d7]	148	Unsigned = true; // unsigned long int
[59db689]	149	} else if ( v <= LLONG_MAX ) { // signed long long int
	150	size = 2;
[5f2f2d7]	151	} else { // unsigned long long int
[59db689]	152	size = 2;
[5f2f2d7]	153	Unsigned = true; // unsigned long long int
[59db689]	154	} // if
[51b73452]	155
[cd623a4]	156	if ( checkU( value[last] ) ) { // suffix 'u' ?
[59db689]	157	Unsigned = true;
[5f2f2d7]	158	if ( last > 0 && checkL( value[ last - 1 ] ) ) { // suffix 'l' ?
[59db689]	159	size = 1;
[5f2f2d7]	160	if ( last > 1 && checkL( value[ last - 2 ] ) ) { // suffix 'll' ?
[59db689]	161	size = 2;
	162	} // if
	163	} // if
[cd623a4]	164	} else if ( checkL( value[ last ] ) ) { // suffix 'l' ?
[59db689]	165	size = 1;
[5f2f2d7]	166	if ( last > 0 && checkL( value[ last - 1 ] ) ) { // suffix 'll' ?
[59db689]	167	size = 2;
[5f2f2d7]	168	if ( last > 1 && checkU( value[ last - 2 ] ) ) { // suffix 'u' ?
	169	Unsigned = true;
	170	} // if
	171	} else {
	172	if ( last > 0 && checkU( value[ last - 1 ] ) ) { // suffix 'u' ?
	173	Unsigned = true;
	174	} // if
[59db689]	175	} // if
	176	} // if
[cd623a4]	177	btype = kind[Unsigned][size]; // lookup constant type
	178	break;
	179	}
	180	case Float:
	181	{
[5721a6d]	182	static const BasicType::Kind kind[2][3] = {
	183	{ BasicType::Float, BasicType::Double, BasicType::LongDouble },
	184	{ BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
	185	};
	186	bool complx = false; // real, complex
	187	int size = 1; // 0 => float, 1 => double (default), 2 => long double
	188	// floating-point constant has minimum of 2 characters: 1. or .1
	189	size_t last = value.length() - 1;
	190
	191	if ( checkI( value[last] ) ) { // imaginary ?
	192	complx = true;
	193	last -= 1; // backup one character
[cd623a4]	194	} // if
[5721a6d]	195	if ( checkF( value[last] ) ) { // float ?
	196	size = 0;
	197	} else if ( checkD( value[last] ) ) { // double ?
	198	size = 1;
	199	} else if ( checkL( value[last] ) ) { // long double ?
	200	size = 2;
[cd623a4]	201	} // if
[5721a6d]	202	if ( ! complx && checkI( value[last - 1] ) ) { // imaginary ?
	203	complx = true;
	204	} // if
	205	btype = kind[complx][size]; // lookup constant type
[b87a5ed]	206	break;
	207	}
[59db689]	208	case Character:
	209	btype = BasicType::Char; // default
	210	if ( string( "LUu" ).find( value[0] ) != string::npos ) {
	211	// ???
	212	} // if
	213	break;
	214	case String:
	215	// array of char
	216	if ( string( "LUu" ).find( value[0] ) != string::npos ) {
	217	if ( value[0] == 'u' && value[1] == '8' ) {
	218	// ???
	219	} else {
	220	// ???
	221	} // if
	222	} // if
	223	break;
	224	} // switch
	225	} // ConstantNode::ConstantNode
[51b73452]	226
[59db689]	227	ConstantNode ConstantNode::appendstr( const std::string newValue ) {
	228	assert( newValue != 0 );
	229	assert( type == String );
[51b73452]	230
[7f5566b]	231	// "abc" "def" "ghi" => "abcdefghi", remove new text from quotes and insert before last quote in old string.
[59db689]	232	value.insert( value.length() - 1, newValue->substr( 1, newValue->length() - 2 ) );
	233
[cd623a4]	234	delete newValue; // allocated by lexer
[b87a5ed]	235	return this;
[51b73452]	236	}
	237
[bdd516a]	238	void ConstantNode::printOneLine( std::ostream &os, int indent ) const {
[59db689]	239	os << string( indent, ' ' );
[b87a5ed]	240	printDesignation( os );
	241
	242	switch ( type ) {
	243	case Integer:
	244	case Float:
	245	os << value ;
	246	break;
	247	case Character:
	248	os << "'" << value << "'";
	249	break;
	250	case String:
	251	os << '"' << value << '"';
	252	break;
[c7ed6d0]	253	} // switch
[51b73452]	254
[b87a5ed]	255	os << ' ';
[51b73452]	256	}
	257
[bdd516a]	258	void ConstantNode::print( std::ostream &os, int indent ) const {
[b87a5ed]	259	printOneLine( os, indent );
	260	os << endl;
[51b73452]	261	}
	262
	263	Expression *ConstantNode::build() const {
[cd623a4]	264	::Type::Qualifiers q; // no qualifiers on constants
[b87a5ed]	265
[59db689]	266	switch ( get_type() ) {
[b87a5ed]	267	case String:
[59db689]	268	{
	269	// string should probably be a primitive type
	270	ArrayType *at = new ArrayType( q, new BasicType( q, BasicType::Char ),
	271	new ConstantExpr(
	272	Constant( new BasicType( q, BasicType::UnsignedInt ),
[ea9b9d3]	273	toString( value.size()+1-2 ) ) ), // +1 for '\0' and -2 for '"'
[59db689]	274	false, false );
	275	return new ConstantExpr( Constant( at, value ), maybeBuild< Expression >( get_argName() ) );
	276	}
	277	default:
[cd623a4]	278	return new ConstantExpr( Constant( new BasicType( q, btype ), get_value() ), maybeBuild< Expression >( get_argName() ) );
[b87a5ed]	279	}
[51b73452]	280	}
	281
[cd623a4]	282	//##############################################################################
	283
[bdd516a]	284	VarRefNode::VarRefNode() : isLabel( false ) {}
[51b73452]	285
[59db689]	286	VarRefNode::VarRefNode( const string *name_, bool labelp ) : ExpressionNode( name_ ), isLabel( labelp ) {}
[51b73452]	287
[3848e0e]	288	VarRefNode::VarRefNode( const VarRefNode &other ) : ExpressionNode( other ), isLabel( other.isLabel ) {
[51b73452]	289	}
	290
	291	Expression *VarRefNode::build() const {
[b87a5ed]	292	return new NameExpr( get_name(), maybeBuild< Expression >( get_argName() ) );
[51b73452]	293	}
	294
[bdd516a]	295	void VarRefNode::printOneLine( std::ostream &os, int indent ) const {
[b87a5ed]	296	printDesignation( os );
	297	os << get_name() << ' ';
[51b73452]	298	}
	299
[bdd516a]	300	void VarRefNode::print( std::ostream &os, int indent ) const {
[b87a5ed]	301	printDesignation( os );
[44b5ca0]	302	os << string( indent, ' ' ) << "Referencing: ";
[b87a5ed]	303	os << "Variable: " << get_name();
	304	os << endl;
[51b73452]	305	}
	306
[cd623a4]	307	//##############################################################################
	308
[51b1202]	309	DesignatorNode::DesignatorNode( ExpressionNode *expr, bool isArrayIndex ) : isArrayIndex( isArrayIndex ) {
	310	set_argName( expr );
[e869d663]	311	assert( get_argName() );
	312
	313	if ( ! isArrayIndex ) {
	314	if ( VarRefNode * var = dynamic_cast< VarRefNode * >( expr ) ) {
	315
	316	stringstream ss( var->get_name() );
	317	double value;
	318	if ( ss >> value ) {
	319	// this is a floating point constant. It MUST be
	320	// ".0" or ".1", otherwise the program is invalid
	321	if ( ! (var->get_name() == ".0" \|\| var->get_name() == ".1") ) {
	322	throw SemanticError( "invalid designator name: " + var->get_name() );
	323	} // if
	324	var->set_name( var->get_name().substr(1) );
	325	} // if
	326	} // if
	327	} // if
[51b1202]	328	}
	329
	330	DesignatorNode::DesignatorNode( const DesignatorNode &other ) : ExpressionNode( other ), isArrayIndex( other.isArrayIndex ) {
	331	}
	332
[e869d663]	333	class DesignatorFixer : public Mutator {
	334	public:
	335	virtual Expression* mutate( NameExpr *nameExpr ) {
	336	if ( nameExpr->get_name() == "0" \|\| nameExpr->get_name() == "1" ) {
	337	Constant val( new BasicType( Type::Qualifiers(), BasicType::SignedInt ), nameExpr->get_name() );
	338	delete nameExpr;
	339	return new ConstantExpr( val );
	340	}
	341	return nameExpr;
	342	}
	343	};
	344
[51b1202]	345	Expression *DesignatorNode::build() const {
[e869d663]	346	Expression * ret = get_argName()->build();
	347
[51b1202]	348	if ( isArrayIndex ) {
[e869d663]	349	// need to traverse entire structure and change any instances of 0 or 1 to
	350	// ConstantExpr
	351	DesignatorFixer fixer;
	352	ret = ret->acceptMutator( fixer );
[51b1202]	353	} // if
[e869d663]	354
	355	return ret;
[51b1202]	356	}
	357
	358	void DesignatorNode::printOneLine( std::ostream &os, int indent ) const {
	359	if ( get_argName() ) {
	360	if ( isArrayIndex ) {
	361	os << "[";
	362	get_argName()->printOneLine( os, indent );
	363	os << "]";
	364	} else {
	365	os << ".";
	366	get_argName()->printOneLine( os, indent );
	367	}
	368	} // if
	369	}
	370
	371	void DesignatorNode::print( std::ostream &os, int indent ) const {
	372	if ( get_argName() ) {
	373	if ( isArrayIndex ) {
	374	os << "[";
	375	get_argName()->print( os, indent );
	376	os << "]";
	377	} else {
	378	os << ".";
	379	get_argName()->print( os, indent );
	380	}
	381	} // if
	382	}
	383
	384	//##############################################################################
	385
[5721a6d]	386	static const char *opName[] = {
	387	"TupleC", "Comma", "TupleFieldSel", // "TuplePFieldSel", // n-adic
	388	// triadic
	389	"Cond", "NCond",
	390	// diadic
	391	"SizeOf", "AlignOf", "OffsetOf", "Attr", "CompLit", "?+?", "?-?", "?*?", "?/?", "?%?", "\|\|", "&&",
	392	"?\|?", "?&?", "?^?", "Cast", "?<<?", "?>>?", "?<?", "?>?", "?<=?", "?>=?", "?==?", "?!=?",
	393	"?=?", "?*=?", "?/=?", "?%=?", "?+=?", "?-=?", "?<<=?", "?>>=?", "?&=?", "?^=?", "?\|=?",
	394	"?[?]", "FieldSel", "PFieldSel", "Range",
	395	// monadic
	396	"+?", "-?", "AddressOf", "*?", "!?", "~?", "++?", "?++", "--?", "?--", "&&"
	397	};
	398
[bdd516a]	399	OperatorNode::OperatorNode( Type t ) : type( t ) {}
[51b73452]	400
[3848e0e]	401	OperatorNode::OperatorNode( const OperatorNode &other ) : ExpressionNode( other ), type( other.type ) {
[51b73452]	402	}
	403
	404	OperatorNode::~OperatorNode() {}
	405
[bdd516a]	406	OperatorNode::Type OperatorNode::get_type( void ) const{
[b87a5ed]	407	return type;
[51b73452]	408	}
	409
[3848e0e]	410	void OperatorNode::printOneLine( std::ostream &os, int indent ) const {
[b87a5ed]	411	printDesignation( os );
[5721a6d]	412	os << opName[ type ] << ' ';
[51b73452]	413	}
	414
	415	void OperatorNode::print( std::ostream &os, int indent ) const{
[b87a5ed]	416	printDesignation( os );
[5721a6d]	417	os << string( indent, ' ' ) << "Operator: " << opName[type] << endl;
[b87a5ed]	418	return;
[51b73452]	419	}
	420
[59db689]	421	const char *OperatorNode::get_typename( void ) const{
[5721a6d]	422	return opName[ type ];
[51b73452]	423	}
	424
[cd623a4]	425	//##############################################################################
	426
[7f5566b]	427	CompositeExprNode::CompositeExprNode() : ExpressionNode(), function( 0 ), arguments( 0 ) {
[51b73452]	428	}
	429
[59db689]	430	CompositeExprNode::CompositeExprNode( const string *name_ ) : ExpressionNode( name_ ), function( 0 ), arguments( 0 ) {
[51b73452]	431	}
	432
[bdd516a]	433	CompositeExprNode::CompositeExprNode( ExpressionNode f, ExpressionNode args ):
[b87a5ed]	434	function( f ), arguments( args ) {
[51b73452]	435	}
	436
[bdd516a]	437	CompositeExprNode::CompositeExprNode( ExpressionNode f, ExpressionNode arg1, ExpressionNode *arg2):
[097e2b0]	438	function( f ), arguments( arg1 ) {
	439	arguments->set_link( arg2 );
[51b73452]	440	}
	441
[3848e0e]	442	CompositeExprNode::CompositeExprNode( const CompositeExprNode &other ) : ExpressionNode( other ), function( maybeClone( other.function ) ) {
[b87a5ed]	443	ParseNode *cur = other.arguments;
	444	while ( cur ) {
	445	if ( arguments ) {
	446	arguments->set_link( cur->clone() );
	447	} else {
	448	arguments = ( ExpressionNode*)cur->clone();
	449	} // if
	450	cur = cur->get_link();
	451	}
[51b73452]	452	}
	453
[3848e0e]	454	CompositeExprNode::~CompositeExprNode() {
[b87a5ed]	455	delete function;
	456	delete arguments;
[51b73452]	457	}
	458
[d3b7937]	459	#include "Common/utility.h"
[51b73452]	460
[3848e0e]	461	Expression *CompositeExprNode::build() const {
[b87a5ed]	462	OperatorNode *op;
	463	std::list<Expression *> args;
[51b73452]	464
[b87a5ed]	465	buildList( get_args(), args );
	466
[cd623a4]	467	if ( ! ( op = dynamic_cast<OperatorNode *>( function ) ) ) { // function as opposed to operator
[b87a5ed]	468	return new UntypedExpr( function->build(), args, maybeBuild< Expression >( get_argName() ));
[cd623a4]	469	} // if
[b87a5ed]	470
[cd623a4]	471	switch ( op->get_type()) {
	472	case OperatorNode::Incr:
	473	case OperatorNode::Decr:
	474	case OperatorNode::IncrPost:
	475	case OperatorNode::DecrPost:
	476	case OperatorNode::Assign:
	477	case OperatorNode::MulAssn:
	478	case OperatorNode::DivAssn:
	479	case OperatorNode::ModAssn:
	480	case OperatorNode::PlusAssn:
	481	case OperatorNode::MinusAssn:
	482	case OperatorNode::LSAssn:
	483	case OperatorNode::RSAssn:
	484	case OperatorNode::AndAssn:
	485	case OperatorNode::ERAssn:
	486	case OperatorNode::OrAssn:
	487	// the rewrite rules for these expressions specify that the first argument has its address taken
	488	assert( ! args.empty() );
	489	args.front() = new AddressExpr( args.front() );
	490	break;
[984dce6]	491	default: // do nothing
[cd623a4]	492	;
[984dce6]	493	} // switch
[cd623a4]	494
	495	switch ( op->get_type() ) {
	496	case OperatorNode::Incr:
	497	case OperatorNode::Decr:
	498	case OperatorNode::IncrPost:
	499	case OperatorNode::DecrPost:
	500	case OperatorNode::Assign:
	501	case OperatorNode::MulAssn:
	502	case OperatorNode::DivAssn:
	503	case OperatorNode::ModAssn:
	504	case OperatorNode::PlusAssn:
	505	case OperatorNode::MinusAssn:
	506	case OperatorNode::LSAssn:
	507	case OperatorNode::RSAssn:
	508	case OperatorNode::AndAssn:
	509	case OperatorNode::ERAssn:
	510	case OperatorNode::OrAssn:
	511	case OperatorNode::Plus:
	512	case OperatorNode::Minus:
	513	case OperatorNode::Mul:
	514	case OperatorNode::Div:
	515	case OperatorNode::Mod:
	516	case OperatorNode::BitOr:
	517	case OperatorNode::BitAnd:
	518	case OperatorNode::Xor:
	519	case OperatorNode::LShift:
	520	case OperatorNode::RShift:
	521	case OperatorNode::LThan:
	522	case OperatorNode::GThan:
	523	case OperatorNode::LEThan:
	524	case OperatorNode::GEThan:
	525	case OperatorNode::Eq:
	526	case OperatorNode::Neq:
	527	case OperatorNode::Index:
	528	case OperatorNode::Range:
	529	case OperatorNode::UnPlus:
	530	case OperatorNode::UnMinus:
	531	case OperatorNode::PointTo:
	532	case OperatorNode::Neg:
	533	case OperatorNode::BitNeg:
	534	case OperatorNode::LabelAddress:
[5721a6d]	535	return new UntypedExpr( new NameExpr( opName[ op->get_type() ] ), args );
[cd623a4]	536	case OperatorNode::AddressOf:
	537	assert( args.size() == 1 );
	538	assert( args.front() );
	539
	540	return new AddressExpr( args.front() );
	541	case OperatorNode::Cast:
	542	{
	543	TypeValueNode * arg = dynamic_cast<TypeValueNode *>( get_args());
	544	assert( arg );
[b87a5ed]	545
[cd623a4]	546	DeclarationNode *decl_node = arg->get_decl();
	547	ExpressionNode expr_node = dynamic_cast<ExpressionNode >( arg->get_link());
[b87a5ed]	548
[cd623a4]	549	Type *targetType = decl_node->buildType();
	550	if ( dynamic_cast< VoidType* >( targetType ) ) {
	551	delete targetType;
	552	return new CastExpr( expr_node->build(), maybeBuild< Expression >( get_argName() ) );
	553	} else {
	554	return new CastExpr( expr_node->build(),targetType, maybeBuild< Expression >( get_argName() ) );
	555	} // if
	556	}
	557	case OperatorNode::FieldSel:
	558	{
	559	assert( args.size() == 2 );
	560
	561	NameExpr member = dynamic_cast<NameExpr >( args.back());
	562	// TupleExpr memberTup = dynamic_cast<TupleExpr >( args.back());
[b87a5ed]	563
[cd623a4]	564	if ( member != 0 ) {
	565	UntypedMemberExpr *ret = new UntypedMemberExpr( member->get_name(), args.front());
[b87a5ed]	566	delete member;
	567	return ret;
[cd623a4]	568	/* else if ( memberTup != 0 )
	569	{
	570	UntypedMemberExpr *ret = new UntypedMemberExpr( memberTup->get_name(), args.front());
	571	delete member;
	572	return ret;
	573	} */
	574	} else
	575	assert( false );
	576	}
	577	case OperatorNode::PFieldSel:
	578	{
	579	assert( args.size() == 2 );
	580
	581	NameExpr member = dynamic_cast<NameExpr >( args.back()); // modify for Tuples xxx
	582	assert( member != 0 );
	583
	584	UntypedExpr deref = new UntypedExpr( new NameExpr( "?" ) );
	585	deref->get_args().push_back( args.front() );
	586
	587	UntypedMemberExpr *ret = new UntypedMemberExpr( member->get_name(), deref );
	588	delete member;
	589	return ret;
	590	}
[5721a6d]	591	case OperatorNode::SizeOf:
[47534159]	592	{
	593	if ( TypeValueNode * arg = dynamic_cast<TypeValueNode *>( get_args()) ) {
[5721a6d]	594	return new SizeofExpr( arg->get_decl()->buildType());
[47534159]	595	} else {
[5721a6d]	596	return new SizeofExpr( args.front());
[47534159]	597	} // if
	598	}
[5721a6d]	599	case OperatorNode::AlignOf:
[cd623a4]	600	{
	601	if ( TypeValueNode * arg = dynamic_cast<TypeValueNode *>( get_args()) ) {
[5721a6d]	602	return new AlignofExpr( arg->get_decl()->buildType());
[cd623a4]	603	} else {
[5721a6d]	604	return new AlignofExpr( args.front());
[cd623a4]	605	} // if
	606	}
[5721a6d]	607	case OperatorNode::OffsetOf:
	608	{
[2a4b088]	609	assert( args.size() == 2 );
	610
	611	if ( TypeValueNode * arg = dynamic_cast<TypeValueNode *>( get_args() ) ) {
	612	NameExpr member = dynamic_cast<NameExpr >( args.back() );
	613	assert( member != 0 );
	614
	615	return new UntypedOffsetofExpr( arg->get_decl()->buildType(), member->get_name() );
	616	} else assert( false );
[5721a6d]	617	}
[cd623a4]	618	case OperatorNode::Attr:
	619	{
	620	VarRefNode var = dynamic_cast<VarRefNode >( get_args());
	621	assert( var );
	622	if ( ! get_args()->get_link() ) {
	623	return new AttrExpr( var->build(), ( Expression*)0);
	624	} else if ( TypeValueNode * arg = dynamic_cast<TypeValueNode *>( get_args()->get_link()) ) {
	625	return new AttrExpr( var->build(), arg->get_decl()->buildType());
	626	} else {
	627	return new AttrExpr( var->build(), args.back());
	628	} // if
	629	}
	630	case OperatorNode::CompLit:
	631	throw UnimplementedError( "C99 compound literals" );
	632	// the short-circuited operators
	633	case OperatorNode::Or:
	634	case OperatorNode::And:
	635	assert( args.size() == 2);
	636	return new LogicalExpr( notZeroExpr( args.front() ), notZeroExpr( args.back() ), ( op->get_type() == OperatorNode::And ) );
	637	case OperatorNode::Cond:
	638	{
	639	assert( args.size() == 3);
[7f5566b]	640	std::list< Expression * >::const_iterator i = args.begin();
[cd623a4]	641	Expression arg1 = notZeroExpr( i++ );
	642	Expression arg2 = i++;
	643	Expression arg3 = i++;
	644	return new ConditionalExpr( arg1, arg2, arg3 );
	645	}
	646	case OperatorNode::NCond:
	647	throw UnimplementedError( "GNU 2-argument conditional expression" );
	648	case OperatorNode::Comma:
	649	{
[b87a5ed]	650	assert( args.size() == 2);
[7f5566b]	651	std::list< Expression * >::const_iterator i = args.begin();
[cd623a4]	652	Expression ret = i++;
	653	while ( i != args.end() ) {
	654	ret = new CommaExpr( ret, *i++ );
[b87a5ed]	655	}
[cd623a4]	656	return ret;
[3848e0e]	657	}
[cd623a4]	658	// Tuples
	659	case OperatorNode::TupleC:
	660	{
	661	TupleExpr *ret = new TupleExpr();
	662	std::copy( args.begin(), args.end(), back_inserter( ret->get_exprs() ) );
	663	return ret;
	664	}
	665	default:
	666	// shouldn't happen
[5721a6d]	667	assert( false );
[cd623a4]	668	return 0;
	669	} // switch
[51b73452]	670	}
	671
[bdd516a]	672	void CompositeExprNode::printOneLine( std::ostream &os, int indent ) const {
[b87a5ed]	673	printDesignation( os );
	674	os << "( ";
	675	function->printOneLine( os, indent );
	676	for ( ExpressionNode cur = arguments; cur != 0; cur = dynamic_cast< ExpressionNode >( cur->get_link() ) ) {
	677	cur->printOneLine( os, indent );
[5721a6d]	678	} // for
[b87a5ed]	679	os << ") ";
[51b73452]	680	}
	681
[bdd516a]	682	void CompositeExprNode::print( std::ostream &os, int indent ) const {
[b87a5ed]	683	printDesignation( os );
[44b5ca0]	684	os << string( indent, ' ' ) << "Application of: " << endl;
[b87a5ed]	685	function->print( os, indent + ParseNode::indent_by );
[51b73452]	686
[44b5ca0]	687	os << string( indent, ' ' ) ;
[b87a5ed]	688	if ( arguments ) {
	689	os << "... on arguments: " << endl;
	690	arguments->printList( os, indent + ParseNode::indent_by );
	691	} else
	692	os << "... on no arguments: " << endl;
[51b73452]	693	}
	694
[a08ba92]	695	void CompositeExprNode::set_function( ExpressionNode *f ) {
[b87a5ed]	696	function = f;
[51b73452]	697	}
	698
[a08ba92]	699	void CompositeExprNode::set_args( ExpressionNode *args ) {
[b87a5ed]	700	arguments = args;
[51b73452]	701	}
	702
[bdd516a]	703	ExpressionNode *CompositeExprNode::get_function( void ) const {
[b87a5ed]	704	return function;
[51b73452]	705	}
	706
[bdd516a]	707	ExpressionNode *CompositeExprNode::get_args( void ) const {
[b87a5ed]	708	return arguments;
[51b73452]	709	}
	710
[a08ba92]	711	void CompositeExprNode::add_arg( ExpressionNode *arg ) {
[b87a5ed]	712	if ( arguments )
	713	arguments->set_link( arg );
	714	else
	715	set_args( arg );
[51b73452]	716	}
	717
[cd623a4]	718	//##############################################################################
	719
[7f5566b]	720	Expression *AsmExprNode::build() const {
	721	return new AsmExpr( maybeBuild< Expression >( inout ), (ConstantExpr *)constraint->build(), operand->build() );
	722	}
	723
	724	void AsmExprNode::print( std::ostream &os, int indent ) const {
	725	os << string( indent, ' ' ) << "Assembler Expression:" << endl;
	726	if ( inout ) {
	727	os << string( indent, ' ' ) << "inout: " << std::endl;
	728	inout->print( os, indent + 2 );
	729	} // if
	730	if ( constraint ) {
	731	os << string( indent, ' ' ) << "constraint: " << std::endl;
	732	constraint->print( os, indent + 2 );
	733	} // if
	734	if ( operand ) {
	735	os << string( indent, ' ' ) << "operand: " << std::endl;
	736	operand->print( os, indent + 2 );
	737	} // if
	738	}
	739
	740	void AsmExprNode::printOneLine( std::ostream &os, int indent ) const {
	741	printDesignation( os );
	742	os << "( ";
	743	if ( inout ) inout->printOneLine( os, indent + 2 );
	744	os << ", ";
	745	if ( constraint ) constraint->printOneLine( os, indent + 2 );
	746	os << ", ";
	747	if ( operand ) operand->printOneLine( os, indent + 2 );
	748	os << ") ";
	749	}
	750
	751	//##############################################################################
	752
	753	void LabelNode::print( std::ostream &os, int indent ) const {}
	754
	755	void LabelNode::printOneLine( std::ostream &os, int indent ) const {}
	756
	757	//##############################################################################
	758
[bdd516a]	759	CommaExprNode::CommaExprNode(): CompositeExprNode( new OperatorNode( OperatorNode::Comma )) {}
[51b73452]	760
[bdd516a]	761	CommaExprNode::CommaExprNode( ExpressionNode *exp ) : CompositeExprNode( new OperatorNode( OperatorNode::Comma ), exp ) {
[3848e0e]	762	}
[51b73452]	763
[bdd516a]	764	CommaExprNode::CommaExprNode( ExpressionNode exp1, ExpressionNode exp2) : CompositeExprNode( new OperatorNode( OperatorNode::Comma ), exp1, exp2) {
[51b73452]	765	}
	766
[a08ba92]	767	CommaExprNode CommaExprNode::add_to_list( ExpressionNode exp ) {
[b87a5ed]	768	add_arg( exp );
[51b73452]	769
[b87a5ed]	770	return this;
[51b73452]	771	}
	772
[3848e0e]	773	CommaExprNode::CommaExprNode( const CommaExprNode &other ) : CompositeExprNode( other ) {
[51b73452]	774	}
	775
[cd623a4]	776	//##############################################################################
	777
[bdd516a]	778	ValofExprNode::ValofExprNode( StatementNode *s ): body( s ) {}
[51b73452]	779
[3848e0e]	780	ValofExprNode::ValofExprNode( const ValofExprNode &other ) : ExpressionNode( other ), body( maybeClone( body ) ) {
[51b73452]	781	}
	782
	783	ValofExprNode::~ValofExprNode() {
[b87a5ed]	784	delete body;
[51b73452]	785	}
	786
	787	void ValofExprNode::print( std::ostream &os, int indent ) const {
[b87a5ed]	788	printDesignation( os );
[59db689]	789	os << string( indent, ' ' ) << "Valof Expression:" << std::endl;
[b87a5ed]	790	get_body()->print( os, indent + 4);
[51b73452]	791	}
	792
[3848e0e]	793	void ValofExprNode::printOneLine( std::ostream &, int indent ) const {
[b87a5ed]	794	assert( false );
[51b73452]	795	}
	796
	797	Expression *ValofExprNode::build() const {
[b87a5ed]	798	return new UntypedValofExpr ( get_body()->build(), maybeBuild< Expression >( get_argName() ) );
[3848e0e]	799	}
	800
[cd623a4]	801	//##############################################################################
	802
[bdd516a]	803	ForCtlExprNode::ForCtlExprNode( ParseNode init_, ExpressionNode cond, ExpressionNode *incr ) throw ( SemanticError ) : condition( cond ), change( incr ) {
[b87a5ed]	804	if ( init_ == 0 )
	805	init = 0;
	806	else {
	807	DeclarationNode *decl;
	808	ExpressionNode *exp;
	809
[a61fea9a]	810	if (( decl = dynamic_cast<DeclarationNode *>(init_) ) != 0)
[b87a5ed]	811	init = new StatementNode( decl );
	812	else if (( exp = dynamic_cast<ExpressionNode *>( init_)) != 0)
	813	init = new StatementNode( StatementNode::Exp, exp );
	814	else
	815	throw SemanticError("Error in for control expression");
	816	}
[51b73452]	817	}
	818
	819	ForCtlExprNode::ForCtlExprNode( const ForCtlExprNode &other )
[b87a5ed]	820	: ExpressionNode( other ), init( maybeClone( other.init ) ), condition( maybeClone( other.condition ) ), change( maybeClone( other.change ) ) {
[51b73452]	821	}
	822
[a08ba92]	823	ForCtlExprNode::~ForCtlExprNode() {
[b87a5ed]	824	delete init;
	825	delete condition;
	826	delete change;
[51b73452]	827	}
	828
	829	Expression *ForCtlExprNode::build() const {
[b87a5ed]	830	// this shouldn't be used!
	831	assert( false );
	832	return 0;
[51b73452]	833	}
	834
	835	void ForCtlExprNode::print( std::ostream &os, int indent ) const{
[59db689]	836	os << string( indent,' ' ) << "For Control Expression -- :" << endl;
[a61fea9a]	837
[59db689]	838	os << string( indent + 2, ' ' ) << "initialization:" << endl;
[a61fea9a]	839	if ( init != 0 )
	840	init->printList( os, indent + 4 );
	841
	842	os << string( indent + 2, ' ' ) << "condition: " << endl;
	843	if ( condition != 0 )
	844	condition->print( os, indent + 4 );
[59db689]	845	os << string( indent + 2, ' ' ) << "increment: " << endl;
[a61fea9a]	846	if ( change != 0 )
	847	change->print( os, indent + 4 );
[51b73452]	848	}
	849
[3848e0e]	850	void ForCtlExprNode::printOneLine( std::ostream &, int indent ) const {
[b87a5ed]	851	assert( false );
[51b73452]	852	}
	853
[cd623a4]	854	//##############################################################################
	855
	856	TypeValueNode::TypeValueNode( DeclarationNode *decl ) : decl( decl ) {
[51b73452]	857	}
	858
[cd623a4]	859	TypeValueNode::TypeValueNode( const TypeValueNode &other ) : ExpressionNode( other ), decl( maybeClone( other.decl ) ) {
[51b73452]	860	}
	861
[3848e0e]	862	Expression *TypeValueNode::build() const {
[b87a5ed]	863	return new TypeExpr( decl->buildType() );
[51b73452]	864	}
	865
[bdd516a]	866	void TypeValueNode::print( std::ostream &os, int indent ) const {
[b87a5ed]	867	os << std::string( indent, ' ' ) << "Type:";
	868	get_decl()->print( os, indent + 2);
[51b73452]	869	}
	870
[bdd516a]	871	void TypeValueNode::printOneLine( std::ostream &os, int indent ) const {
[b87a5ed]	872	os << "Type:";
	873	get_decl()->print( os, indent + 2);
[51b73452]	874	}
	875
[630a82a]	876
	877	CompoundLiteralNode::CompoundLiteralNode( DeclarationNode type, InitializerNode kids ) : type( type ), kids( kids ) {}
	878	CompoundLiteralNode::CompoundLiteralNode( const CompoundLiteralNode &other ) : ExpressionNode( other ), type( other.type ), kids( other.kids ) {}
	879
	880	CompoundLiteralNode::~CompoundLiteralNode() {
	881	delete kids;
	882	delete type;
	883	}
	884
	885	CompoundLiteralNode *CompoundLiteralNode::clone() const {
	886	return new CompoundLiteralNode( *this );
	887	}
	888
	889	void CompoundLiteralNode::print( std::ostream &os, int indent ) const {
	890	os << string( indent,' ' ) << "CompoundLiteralNode:" << endl;
	891
	892	os << string( indent + 2, ' ' ) << "type:" << endl;
	893	if ( type != 0 )
	894	type->print( os, indent + 4 );
	895
	896	os << string( indent + 2, ' ' ) << "initialization:" << endl;
	897	if ( kids != 0 )
	898	kids->printList( os, indent + 4 );
	899	}
	900
	901	void CompoundLiteralNode::printOneLine( std::ostream &os, int indent ) const {
	902	os << "( ";
	903	if ( type ) type->print( os );
	904	os << ", ";
	905	if ( kids ) kids->printOneLine( os );
	906	os << ") ";
	907	}
	908
	909	Expression *CompoundLiteralNode::build() const {
	910	Declaration * newDecl = type->build(); // compound literal type
	911	if ( DeclarationWithType * newDeclWithType = dynamic_cast< DeclarationWithType * >( newDecl ) ) { // non-sue compound-literal type
	912	return new CompoundLiteralExpr( newDeclWithType->get_type(), kids->build() );
	913	// these types do not have associated type information
	914	} else if ( StructDecl * newDeclStructDecl = dynamic_cast< StructDecl * >( newDecl ) ) {
	915	return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl->get_name() ), kids->build() );
	916	} else if ( UnionDecl * newDeclUnionDecl = dynamic_cast< UnionDecl * >( newDecl ) ) {
	917	return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl->get_name() ), kids->build() );
	918	} else if ( EnumDecl * newDeclEnumDecl = dynamic_cast< EnumDecl * >( newDecl ) ) {
	919	return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl->get_name() ), kids->build() );
	920	} else {
	921	assert( false );
	922	} // if
	923	}
	924
	925
[3848e0e]	926	ExpressionNode flattenCommas( ExpressionNode list ) {
[cd623a4]	927	if ( CompositeExprNode composite = dynamic_cast< CompositeExprNode >( list ) ) {
	928	OperatorNode *op;
	929	if ( ( op = dynamic_cast< OperatorNode * >( composite->get_function() )) && ( op->get_type() == OperatorNode::Comma ) ) {
	930	if ( ExpressionNode next = dynamic_cast< ExpressionNode >( list->get_link() ) )
	931	composite->add_arg( next );
	932	return flattenCommas( composite->get_args() );
	933	} // if
	934	} // if
[51b73452]	935
[b87a5ed]	936	if ( ExpressionNode next = dynamic_cast< ExpressionNode >( list->get_link() ) )
	937	list->set_next( flattenCommas( next ) );
[51b73452]	938
[b87a5ed]	939	return list;
[51b73452]	940	}
	941
[3848e0e]	942	ExpressionNode tupleContents( ExpressionNode tuple ) {
[b87a5ed]	943	if ( CompositeExprNode composite = dynamic_cast< CompositeExprNode >( tuple ) ) {
	944	OperatorNode *op = 0;
	945	if ( ( op = dynamic_cast< OperatorNode * >( composite->get_function() )) && ( op->get_type() == OperatorNode::TupleC ) )
	946	return composite->get_args();
[cd623a4]	947	} // if
[b87a5ed]	948	return tuple;
[51b73452]	949	}
[b87a5ed]	950
	951	// Local Variables: //
	952	// tab-width: 4 //
	953	// mode: c++ //
	954	// compile-command: "make install" //
	955	// End: //

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