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source: src/CodeGen/GenType.cc @ 3bf9d10

Last change on this file since 3bf9d10 was 9749d2fa, checked in by JiadaL <j82liang@…>, 22 months ago
Fix CodeGen? for function type enum
Property mode set to `100644`
File size: 11.1 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	// GenType.cc --
8	//
9	// Author : Richard C. Bilson
10	// Created On : Mon May 18 07:44:20 2015
11	// Last Modified By : Andrew Beach
12	// Last Modified On : Fri May 20 11:18:00 2022
13	// Update Count : 24
14	//
15	#include "GenType.h"
16
17	#include <cassert> // for assert, assertf
18	#include <list> // for _List_iterator, _List_const_iterator
19	#include <sstream> // for operator<<, ostringstream, basic_os...
20
21	#include "CodeGenerator.h" // for CodeGenerator
22	#include "SynTree/Declaration.h" // for DeclarationWithType
23	#include "SynTree/Expression.h" // for Expression
24	#include "SynTree/Type.h" // for PointerType, Type, FunctionType
25	#include "SynTree/Visitor.h" // for Visitor
26
27	namespace CodeGen {
28	struct GenType : public WithVisitorRef<GenType>, public WithShortCircuiting {
29	std::string typeString;
30	GenType( const std::string &typeString, const Options &options );
31
32	void previsit( BaseSyntaxNode * );
33	void postvisit( BaseSyntaxNode * );
34
35	void postvisit( FunctionType * funcType );
36	void postvisit( VoidType * voidType );
37	void postvisit( BasicType * basicType );
38	void postvisit( PointerType * pointerType );
39	void postvisit( ArrayType * arrayType );
40	void postvisit( ReferenceType * refType );
41	void postvisit( StructInstType * structInst );
42	void postvisit( UnionInstType * unionInst );
43	void postvisit( EnumInstType * enumInst );
44	void postvisit( TypeInstType * typeInst );
45	void postvisit( TupleType * tupleType );
46	void postvisit( VarArgsType * varArgsType );
47	void postvisit( ZeroType * zeroType );
48	void postvisit( OneType * oneType );
49	void postvisit( GlobalScopeType * globalType );
50	void postvisit( TraitInstType * inst );
51	void postvisit( TypeofType * typeof );
52	void postvisit( VTableType * vtable );
53	void postvisit( QualifiedType * qualType );
54
55	private:
56	void handleQualifiers( Type *type );
57	std::string handleGeneric( ReferenceToType * refType );
58	void genArray( const Type::Qualifiers &qualifiers, Type base, Expression dimension, bool isVarLen, bool isStatic );
59
60	Options options;
61	};
62
63	std::string genType( Type *type, const std::string &baseString, const Options &options ) {
64	PassVisitor<GenType> gt( baseString, options );
65	std::ostringstream os;
66
67	if ( ! type->get_attributes().empty() ) {
68	PassVisitor<CodeGenerator> cg( os, options );
69	cg.pass.genAttributes( type->get_attributes() );
70	} // if
71
72	type->accept( gt );
73	return os.str() + gt.pass.typeString;
74	}
75
76	std::string genType( Type *type, const std::string &baseString, bool pretty, bool genC , bool lineMarks ) {
77	return genType( type, baseString, Options(pretty, genC, lineMarks, false ) );
78	}
79
80	std::string genPrettyType( Type * type, const std::string & baseString ) {
81	return genType( type, baseString, true, false );
82	}
83
84	GenType::GenType( const std::string &typeString, const Options &options ) : typeString( typeString ), options( options ) {}
85
86	// *** BaseSyntaxNode
87	void GenType::previsit( BaseSyntaxNode * ) {
88	// turn off automatic recursion for all nodes, to allow each visitor to
89	// precisely control the order in which its children are visited.
90	visit_children = false;
91	}
92
93	void GenType::postvisit( BaseSyntaxNode * node ) {
94	std::stringstream ss;
95	node->print( ss );
96	assertf( false, "Unhandled node reached in GenType: %s", ss.str().c_str() );
97	}
98
99	void GenType::postvisit( VoidType * voidType ) {
100	typeString = "void " + typeString;
101	handleQualifiers( voidType );
102	}
103
104	void GenType::postvisit( BasicType * basicType ) {
105	BasicType::Kind kind = basicType->kind;
106	assert( 0 <= kind && kind < BasicType::NUMBER_OF_BASIC_TYPES );
107	typeString = std::string( BasicType::typeNames[kind] ) + " " + typeString;
108	handleQualifiers( basicType );
109	}
110
111	void GenType::genArray( const Type::Qualifiers & qualifiers, Type * base, Expression *dimension, bool isVarLen, bool isStatic ) {
112	std::ostringstream os;
113	if ( typeString != "" ) {
114	if ( typeString[ 0 ] == '*' ) {
115	os << "(" << typeString << ")";
116	} else {
117	os << typeString;
118	} // if
119	} // if
120	os << "[";
121
122	if ( isStatic ) {
123	os << "static ";
124	} // if
125	if ( qualifiers.is_const ) {
126	os << "const ";
127	} // if
128	if ( qualifiers.is_volatile ) {
129	os << "volatile ";
130	} // if
131	if ( qualifiers.is_restrict ) {
132	os << "__restrict ";
133	} // if
134	if ( qualifiers.is_atomic ) {
135	os << "_Atomic ";
136	} // if
137	if ( dimension != 0 ) {
138	PassVisitor<CodeGenerator> cg( os, options );
139	dimension->accept( cg );
140	} else if ( isVarLen ) {
141	// no dimension expression on a VLA means it came in with the * token
142	os << "*";
143	} // if
144	os << "]";
145
146	typeString = os.str();
147
148	base->accept( *visitor );
149	}
150
151	void GenType::postvisit( PointerType * pointerType ) {
152	assert( pointerType->base != 0);
153	if ( pointerType->get_isStatic() \|\| pointerType->get_isVarLen() \|\| pointerType->dimension ) {
154	genArray( pointerType->get_qualifiers(), pointerType->base, pointerType->dimension, pointerType->get_isVarLen(), pointerType->get_isStatic() );
155	} else {
156	handleQualifiers( pointerType );
157	if ( typeString[ 0 ] == '?' ) {
158	typeString = "* " + typeString;
159	} else {
160	typeString = "*" + typeString;
161	} // if
162	pointerType->base->accept( *visitor );
163	} // if
164	}
165
166	void GenType::postvisit( ArrayType * arrayType ) {
167	genArray( arrayType->get_qualifiers(), arrayType->base, arrayType->dimension, arrayType->get_isVarLen(), arrayType->get_isStatic() );
168	}
169
170	void GenType::postvisit( ReferenceType * refType ) {
171	assert( 0 != refType->base );
172	assertf( ! options.genC, "Reference types should not reach code generation." );
173	handleQualifiers( refType );
174	typeString = "&" + typeString;
175	refType->base->accept( *visitor );
176	}
177
178	void GenType::postvisit( FunctionType * funcType ) {
179	std::ostringstream os;
180
181	if ( typeString != "" ) {
182	if ( typeString[ 0 ] == '*' ) {
183	os << "(" << typeString << ")";
184	} else {
185	os << typeString;
186	} // if
187	} // if
188
189	/*********** parameters *************/
190
191	const std::list<DeclarationWithType *> &pars = funcType->parameters;
192
193	if ( pars.empty() ) {
194	if ( funcType->get_isVarArgs() ) {
195	os << "()";
196	} else {
197	os << "(void)";
198	} // if
199	} else {
200	PassVisitor<CodeGenerator> cg( os, options );
201	os << "(" ;
202
203	cg.pass.genCommaList( pars.begin(), pars.end() );
204
205	if ( funcType->get_isVarArgs() ) {
206	os << ", ...";
207	} // if
208	os << ")";
209	} // if
210
211	typeString = os.str();
212
213	if ( funcType->returnVals.size() == 0 ) {
214	typeString = "void " + typeString;
215	} else {
216	funcType->returnVals.front()->get_type()->accept( *visitor );
217	} // if
218
219	// add forall
220	if( ! funcType->forall.empty() && ! options.genC ) {
221	// assertf( ! genC, "Aggregate type parameters should not reach code generation." );
222	std::ostringstream os;
223	PassVisitor<CodeGenerator> cg( os, options );
224	os << "forall(";
225	cg.pass.genCommaList( funcType->forall.begin(), funcType->forall.end() );
226	os << ")" << std::endl;
227	typeString = os.str() + typeString;
228	}
229	}
230
231	std::string GenType::handleGeneric( ReferenceToType * refType ) {
232	if ( ! refType->parameters.empty() ) {
233	std::ostringstream os;
234	PassVisitor<CodeGenerator> cg( os, options );
235	os << "(";
236	cg.pass.genCommaList( refType->parameters.begin(), refType->parameters.end() );
237	os << ") ";
238	return os.str();
239	}
240	return "";
241	}
242
243	void GenType::postvisit( StructInstType * structInst ) {
244	typeString = structInst->name + handleGeneric( structInst ) + " " + typeString;
245	if ( options.genC ) typeString = "struct " + typeString;
246	handleQualifiers( structInst );
247	}
248
249	void GenType::postvisit( UnionInstType * unionInst ) {
250	typeString = unionInst->name + handleGeneric( unionInst ) + " " + typeString;
251	if ( options.genC ) typeString = "union " + typeString;
252	handleQualifiers( unionInst );
253	}
254
255	void GenType::postvisit( EnumInstType * enumInst ) {
256	if ( enumInst->baseEnum && enumInst->baseEnum->base ) {
257	typeString = genType(enumInst->baseEnum->base, typeString, options);
258	} else {
259	typeString = enumInst->name + " " + typeString;
260	if ( options.genC ) {
261	typeString = "enum " + typeString;
262	}
263	}
264	handleQualifiers( enumInst );
265	}
266
267	void GenType::postvisit( TypeInstType * typeInst ) {
268	assertf( ! options.genC, "Type instance types should not reach code generation." );
269	typeString = typeInst->name + " " + typeString;
270	handleQualifiers( typeInst );
271	}
272
273	void GenType::postvisit( TupleType * tupleType ) {
274	assertf( ! options.genC, "Tuple types should not reach code generation." );
275	unsigned int i = 0;
276	std::ostringstream os;
277	os << "[";
278	for ( Type * t : *tupleType ) {
279	i++;
280	os << genType( t, "", options ) << (i == tupleType->size() ? "" : ", ");
281	}
282	os << "] ";
283	typeString = os.str() + typeString;
284	}
285
286	void GenType::postvisit( VarArgsType * varArgsType ) {
287	typeString = "__builtin_va_list " + typeString;
288	handleQualifiers( varArgsType );
289	}
290
291	void GenType::postvisit( ZeroType * zeroType ) {
292	// ideally these wouldn't hit codegen at all, but should be safe to make them ints
293	typeString = (options.pretty ? "zero_t " : "long int ") + typeString;
294	handleQualifiers( zeroType );
295	}
296
297	void GenType::postvisit( OneType * oneType ) {
298	// ideally these wouldn't hit codegen at all, but should be safe to make them ints
299	typeString = (options.pretty ? "one_t " : "long int ") + typeString;
300	handleQualifiers( oneType );
301	}
302
303	void GenType::postvisit( GlobalScopeType * globalType ) {
304	assertf( ! options.genC, "Global scope type should not reach code generation." );
305	handleQualifiers( globalType );
306	}
307
308	void GenType::postvisit( TraitInstType * inst ) {
309	assertf( ! options.genC, "Trait types should not reach code generation." );
310	typeString = inst->name + " " + typeString;
311	handleQualifiers( inst );
312	}
313
314	void GenType::postvisit( TypeofType * typeof ) {
315	std::ostringstream os;
316	PassVisitor<CodeGenerator> cg( os, options );
317	os << "typeof(";
318	typeof->expr->accept( cg );
319	os << ") " << typeString;
320	typeString = os.str();
321	handleQualifiers( typeof );
322	}
323
324	void GenType::postvisit( VTableType * vtable ) {
325	assertf( ! options.genC, "Virtual table types should not reach code generation." );
326	std::ostringstream os;
327	os << "vtable(" << genType( vtable->base, "", options ) << ") " << typeString;
328	typeString = os.str();
329	handleQualifiers( vtable );
330	}
331
332	void GenType::postvisit( QualifiedType * qualType ) {
333	assertf( ! options.genC, "Qualified types should not reach code generation." );
334	std::ostringstream os;
335	os << genType( qualType->parent, "", options ) << "." << genType( qualType->child, "", options ) << typeString;
336	typeString = os.str();
337	handleQualifiers( qualType );
338	}
339
340	void GenType::handleQualifiers( Type * type ) {
341	if ( type->get_const() ) {
342	typeString = "const " + typeString;
343	} // if
344	if ( type->get_volatile() ) {
345	typeString = "volatile " + typeString;
346	} // if
347	if ( type->get_restrict() ) {
348	typeString = "__restrict " + typeString;
349	} // if
350	if ( type->get_atomic() ) {
351	typeString = "_Atomic " + typeString;
352	} // if
353	}
354	} // namespace CodeGen
355
356	// Local Variables: //
357	// tab-width: 4 //
358	// mode: c++ //
359	// compile-command: "make install" //
360	// End: //

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