source: src/CodeGen/GenType.cc@ 08a40fd

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor deferred_resn demangler enum forall-pointer-decay gc_noraii jacob/cs343-translation jenkins-sandbox memory 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 08a40fd was 1db21619, checked in by Peter A. Buhr <pabuhr@…>, 10 years ago

add CFA flag, remove -p from cc1, typedef on functions become function declarations, move isInline/isNoreturn to Declaration, cleaned up label code
  • Property mode set to 100644
File size: 5.8 KB
Line 
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#include "SynTree/Visitor.h"
22#include "SynTree/Type.h"
23#include "SynTree/Expression.h"
24
25namespace CodeGen {
26 class GenType : public Visitor {
27 public:
28 GenType( const std::string &typeString );
29 std::string get_typeString() const { return typeString; }
30 void set_typeString( const std::string &newValue ) { typeString = newValue; }
31
32 virtual void visit( FunctionType *funcType );
33 virtual void visit( VoidType *voidType );
34 virtual void visit( BasicType *basicType );
35 virtual void visit( PointerType *pointerType );
36 virtual void visit( ArrayType *arrayType );
37 virtual void visit( StructInstType *structInst );
38 virtual void visit( UnionInstType *unionInst );
39 virtual void visit( EnumInstType *enumInst );
40 virtual void visit( TypeInstType *typeInst );
41
42 private:
43 void handleQualifiers( Type *type );
44 void genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic );
45
46 std::string typeString;
47 };
48
49 std::string genType( Type *type, const std::string &baseString ) {
50 GenType gt( baseString );
51 type->accept( gt );
52 return gt.get_typeString();
53 }
54
55 GenType::GenType( const std::string &typeString ) : typeString( typeString ) {}
56
57 void GenType::visit( VoidType *voidType ) {
58 typeString = "void " + typeString;
59 handleQualifiers( voidType );
60 }
61
62 void GenType::visit( BasicType *basicType ) {
63 BasicType::Kind kind = basicType->get_kind();
64 assert( 0 <= kind && kind < BasicType::NUMBER_OF_BASIC_TYPES );
65 typeString = std::string( BasicType::typeNames[kind] ) + " " + typeString;
66 handleQualifiers( basicType );
67 }
68
69 void GenType::genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic ) {
70 std::ostringstream os;
71 if ( typeString != "" ) {
72 if ( typeString[ 0 ] == '*' ) {
73 os << "(" << typeString << ")";
74 } else {
75 os << typeString;
76 } // if
77 } // if
78 os << "[";
79
80 if ( isStatic ) {
81 os << "static ";
82 } // if
83 if ( qualifiers.isConst ) {
84 os << "const ";
85 } // if
86 if ( qualifiers.isVolatile ) {
87 os << "volatile ";
88 } // if
89 if ( qualifiers.isRestrict ) {
90 os << "__restrict ";
91 } // if
92 if ( qualifiers.isAtomic ) {
93 os << "_Atomic ";
94 } // if
95 if ( qualifiers.isAttribute ) {
96 os << "__attribute(( )) ";
97 } // if
98 if ( dimension != 0 ) {
99 CodeGenerator cg( os );
100 dimension->accept( cg );
101 } else if ( isVarLen ) {
102 // no dimension expression on a VLA means it came in with the * token
103 os << "*";
104 } // if
105 os << "]";
106
107 typeString = os.str();
108
109 base->accept( *this );
110 }
111
112 void GenType::visit( PointerType *pointerType ) {
113 assert( pointerType->get_base() != 0);
114 if ( pointerType->get_isStatic() || pointerType->get_isVarLen() || pointerType->get_dimension() ) {
115 genArray( pointerType->get_qualifiers(), pointerType->get_base(), pointerType->get_dimension(), pointerType->get_isVarLen(), pointerType->get_isStatic() );
116 } else {
117 handleQualifiers( pointerType );
118 if ( typeString[ 0 ] == '?' ) {
119 typeString = "* " + typeString;
120 } else {
121 typeString = "*" + typeString;
122 } // if
123 pointerType->get_base()->accept( *this );
124 } // if
125 }
126
127 void GenType::visit( ArrayType *arrayType ) {
128 genArray( arrayType->get_qualifiers(), arrayType->get_base(), arrayType->get_dimension(), arrayType->get_isVarLen(), arrayType->get_isStatic() );
129 }
130
131 void GenType::visit( FunctionType *funcType ) {
132 std::ostringstream os;
133
134 if ( typeString != "" ) {
135 if ( typeString[ 0 ] == '*' ) {
136 os << "(" << typeString << ")";
137 } else {
138 os << typeString;
139 } // if
140 } // if
141
142 /************* parameters ***************/
143
144 const std::list<DeclarationWithType *> &pars = funcType->get_parameters();
145
146 if ( pars.empty() ) {
147 if ( funcType->get_isVarArgs() ) {
148 os << "()";
149 } else {
150 os << "(void)";
151 } // if
152 } else {
153 CodeGenerator cg( os );
154 os << "(" ;
155
156 cg.genCommaList( pars.begin(), pars.end() );
157
158 if ( funcType->get_isVarArgs() ) {
159 os << ", ...";
160 } // if
161 os << ")";
162 } // if
163
164 typeString = os.str();
165
166 if ( funcType->get_returnVals().size() == 0 ) {
167 typeString = "void " + typeString;
168 } else {
169 funcType->get_returnVals().front()->get_type()->accept( *this );
170 } // if
171 }
172
173 void GenType::visit( StructInstType *structInst ) {
174 typeString = "struct " + structInst->get_name() + " " + typeString;
175 handleQualifiers( structInst );
176 }
177
178 void GenType::visit( UnionInstType *unionInst ) {
179 typeString = "union " + unionInst->get_name() + " " + typeString;
180 handleQualifiers( unionInst );
181 }
182
183 void GenType::visit( EnumInstType *enumInst ) {
184 typeString = "enum " + enumInst->get_name() + " " + typeString;
185 handleQualifiers( enumInst );
186 }
187
188 void GenType::visit( TypeInstType *typeInst ) {
189 typeString = typeInst->get_name() + " " + typeString;
190 handleQualifiers( typeInst );
191 }
192
193 void GenType::handleQualifiers( Type *type ) {
194 if ( type->get_isConst() ) {
195 typeString = "const " + typeString;
196 } // if
197 if ( type->get_isVolatile() ) {
198 typeString = "volatile " + typeString;
199 } // if
200 if ( type->get_isRestrict() ) {
201 typeString = "__restrict " + typeString;
202 } // if
203 if ( type->get_isAtomic() ) {
204 typeString = "_Atomic " + typeString;
205 } // if
206 if ( type->get_isAttribute() ) {
207 typeString = "__attribute(( )) " + typeString;
208 } // if
209 }
210} // namespace CodeGen
211
212// Local Variables: //
213// tab-width: 4 //
214// mode: c++ //
215// compile-command: "make install" //
216// End: //
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