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source: src/Parser/ExpressionNode.cc@ 5447e09

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Last change on this file since 5447e09 was 2a4b088, checked in by Aaron Moss <a3moss@…>, 10 years ago
Make offsetof expressions work
Property mode set to `100644`
File size: 26.8 KB

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

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