source: src/CodeGen/GenType.cc@ bd98b58

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc
Last change on this file since bd98b58 was 6d4d1a6, checked in by Rob Schluntz <rschlunt@…>, 9 years ago

assert tuple types do not make it to code gen
  • Property mode set to 100644
File size: 6.7 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 : Peter A. Buhr
12// Last Modified On : Thu Jul 9 16:43:52 2015
13// Update Count : 13
14//
15
16#include <sstream>
17#include <cassert>
18
19#include "GenType.h"
20#include "CodeGenerator.h"
21
22#include "SynTree/Declaration.h"
23#include "SynTree/Expression.h"
24#include "SynTree/Type.h"
25#include "SynTree/Visitor.h"
26
27namespace CodeGen {
28 class GenType : public Visitor {
29 public:
30 GenType( const std::string &typeString, bool mangle = true );
31 std::string get_typeString() const { return typeString; }
32 void set_typeString( const std::string &newValue ) { typeString = newValue; }
33
34 virtual void visit( FunctionType *funcType );
35 virtual void visit( VoidType *voidType );
36 virtual void visit( BasicType *basicType );
37 virtual void visit( PointerType *pointerType );
38 virtual void visit( ArrayType *arrayType );
39 virtual void visit( StructInstType *structInst );
40 virtual void visit( UnionInstType *unionInst );
41 virtual void visit( EnumInstType *enumInst );
42 virtual void visit( TypeInstType *typeInst );
43 virtual void visit( TupleType * tupleType );
44 virtual void visit( VarArgsType *varArgsType );
45 virtual void visit( ZeroType *zeroType );
46 virtual void visit( OneType *oneType );
47
48 private:
49 void handleQualifiers( Type *type );
50 void genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic );
51
52 std::string typeString;
53 bool mangle = true;
54 };
55
56 std::string genType( Type *type, const std::string &baseString, bool mangle ) {
57 GenType gt( baseString, mangle );
58 type->accept( gt );
59 return gt.get_typeString();
60 }
61
62 GenType::GenType( const std::string &typeString, bool mangle ) : typeString( typeString ), mangle( mangle ) {}
63
64 void GenType::visit( VoidType *voidType ) {
65 typeString = "void " + typeString;
66 handleQualifiers( voidType );
67 }
68
69 void GenType::visit( BasicType *basicType ) {
70 BasicType::Kind kind = basicType->get_kind();
71 assert( 0 <= kind && kind < BasicType::NUMBER_OF_BASIC_TYPES );
72 typeString = std::string( BasicType::typeNames[kind] ) + " " + typeString;
73 handleQualifiers( basicType );
74 }
75
76 void GenType::genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic ) {
77 std::ostringstream os;
78 if ( typeString != "" ) {
79 if ( typeString[ 0 ] == '*' ) {
80 os << "(" << typeString << ")";
81 } else {
82 os << typeString;
83 } // if
84 } // if
85 os << "[";
86
87 if ( isStatic ) {
88 os << "static ";
89 } // if
90 if ( qualifiers.isConst ) {
91 os << "const ";
92 } // if
93 if ( qualifiers.isVolatile ) {
94 os << "volatile ";
95 } // if
96 if ( qualifiers.isRestrict ) {
97 os << "__restrict ";
98 } // if
99 if ( qualifiers.isAtomic ) {
100 os << "_Atomic ";
101 } // if
102 if ( qualifiers.isAttribute ) {
103 os << "__attribute(( )) ";
104 } // if
105 if ( dimension != 0 ) {
106 CodeGenerator cg( os, mangle );
107 dimension->accept( cg );
108 } else if ( isVarLen ) {
109 // no dimension expression on a VLA means it came in with the * token
110 os << "*";
111 } // if
112 os << "]";
113
114 typeString = os.str();
115
116 base->accept( *this );
117 }
118
119 void GenType::visit( PointerType *pointerType ) {
120 assert( pointerType->get_base() != 0);
121 if ( pointerType->get_isStatic() || pointerType->get_isVarLen() || pointerType->get_dimension() ) {
122 genArray( pointerType->get_qualifiers(), pointerType->get_base(), pointerType->get_dimension(), pointerType->get_isVarLen(), pointerType->get_isStatic() );
123 } else {
124 handleQualifiers( pointerType );
125 if ( typeString[ 0 ] == '?' ) {
126 typeString = "* " + typeString;
127 } else {
128 typeString = "*" + typeString;
129 } // if
130 pointerType->get_base()->accept( *this );
131 } // if
132 }
133
134 void GenType::visit( ArrayType *arrayType ) {
135 genArray( arrayType->get_qualifiers(), arrayType->get_base(), arrayType->get_dimension(), arrayType->get_isVarLen(), arrayType->get_isStatic() );
136 }
137
138 void GenType::visit( FunctionType *funcType ) {
139 std::ostringstream os;
140
141 if ( typeString != "" ) {
142 if ( typeString[ 0 ] == '*' ) {
143 os << "(" << typeString << ")";
144 } else {
145 os << typeString;
146 } // if
147 } // if
148
149 /************* parameters ***************/
150
151 const std::list<DeclarationWithType *> &pars = funcType->get_parameters();
152
153 if ( pars.empty() ) {
154 if ( funcType->get_isVarArgs() ) {
155 os << "()";
156 } else {
157 os << "(void)";
158 } // if
159 } else {
160 CodeGenerator cg( os, mangle );
161 os << "(" ;
162
163 cg.genCommaList( pars.begin(), pars.end() );
164
165 if ( funcType->get_isVarArgs() ) {
166 os << ", ...";
167 } // if
168 os << ")";
169 } // if
170
171 typeString = os.str();
172
173 if ( funcType->get_returnVals().size() == 0 ) {
174 typeString = "void " + typeString;
175 } else {
176 funcType->get_returnVals().front()->get_type()->accept( *this );
177 } // if
178 }
179
180 void GenType::visit( StructInstType *structInst ) {
181 typeString = "struct " + structInst->get_name() + " " + typeString;
182 handleQualifiers( structInst );
183 }
184
185 void GenType::visit( UnionInstType *unionInst ) {
186 typeString = "union " + unionInst->get_name() + " " + typeString;
187 handleQualifiers( unionInst );
188 }
189
190 void GenType::visit( EnumInstType *enumInst ) {
191 typeString = "enum " + enumInst->get_name() + " " + typeString;
192 handleQualifiers( enumInst );
193 }
194
195 void GenType::visit( TypeInstType *typeInst ) {
196 typeString = typeInst->get_name() + " " + typeString;
197 handleQualifiers( typeInst );
198 }
199
200 void GenType::visit( TupleType * tupleType ) {
201 assertf( ! mangle, "Tuple types should not make it to Code Gen." );
202 Visitor::visit( tupleType );
203 }
204
205 void GenType::visit( VarArgsType *varArgsType ) {
206 typeString = "__builtin_va_list " + typeString;
207 handleQualifiers( varArgsType );
208 }
209
210 void GenType::visit( ZeroType *zeroType ) {
211 // ideally these wouldn't hit codegen at all, but should be safe to make them ints
212 typeString = "long int " + typeString;
213 handleQualifiers( zeroType );
214 }
215
216 void GenType::visit( OneType *oneType ) {
217 // ideally these wouldn't hit codegen at all, but should be safe to make them ints
218 typeString = "long int " + typeString;
219 handleQualifiers( oneType );
220 }
221
222 void GenType::handleQualifiers( Type *type ) {
223 if ( type->get_isConst() ) {
224 typeString = "const " + typeString;
225 } // if
226 if ( type->get_isVolatile() ) {
227 typeString = "volatile " + typeString;
228 } // if
229 if ( type->get_isRestrict() ) {
230 typeString = "__restrict " + typeString;
231 } // if
232 if ( type->get_isAtomic() ) {
233 typeString = "_Atomic " + typeString;
234 } // if
235 }
236} // namespace CodeGen
237
238// Local Variables: //
239// tab-width: 4 //
240// mode: c++ //
241// compile-command: "make install" //
242// End: //
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