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comparison dmd/TypeTypedef.d @ 0:10317f0c89a5

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Initial commit
author korDen
date Sat, 24 Oct 2009 08:42:06 +0400
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children a8b50ff7f201
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-1:000000000000 0:10317f0c89a5
1 module dmd.TypeTypedef;
2
3 import dmd.Type;
4 import dmd.TypedefDeclaration;
5 import dmd.MOD;
6 import dmd.Loc;
7 import dmd.Id;
8 import dmd.Dsymbol;
9 import dmd.Scope;
10 import dmd.OutBuffer;
11 import dmd.HdrGenState;
12 import dmd.Expression;
13 import dmd.Identifier;
14 import dmd.ArrayTypes;
15 import dmd.MATCH;
16 import dmd.TypeSArray;
17 import dmd.CppMangleState;
18 import dmd.TypeInfoDeclaration;
19 import dmd.TypeInfoTypedefDeclaration;
20 import dmd.TY;
21
22 import dmd.backend.TYPE;
23 import dmd.backend.dt_t;
24
25 class TypeTypedef : Type
26 {
27 TypedefDeclaration sym;
28
29 this(TypedefDeclaration sym)
30 {
31 super(Ttypedef);
32 this.sym = sym;
33 }
34
35 version (DumbClone) {
36 } else {
37 Type clone()
38 {
39 assert(false);
40 }
41 }
42
43 Type syntaxCopy()
44 {
45 assert(false);
46 }
47
48 ulong size(Loc loc)
49 {
50 return sym.basetype.size(loc);
51 }
52
53 uint alignsize()
54 {
55 assert(false);
56 }
57
58 string toChars()
59 {
60 assert(false);
61 }
62
63 Type semantic(Loc loc, Scope sc)
64 {
65 //printf("TypeTypedef::semantic(%s), sem = %d\n", toChars(), sym->sem);
66 sym.semantic(sc);
67 return merge();
68 }
69
70 Dsymbol toDsymbol(Scope sc)
71 {
72 return sym;
73 }
74
75 void toDecoBuffer(OutBuffer buf, int flag)
76 {
77 Type.toDecoBuffer(buf, flag);
78 string name = sym.mangle();
79 buf.printf("%s", name);
80 }
81
82 void toCBuffer2(OutBuffer buf, HdrGenState* hgs, MOD mod)
83 {
84 assert(false);
85 }
86
87 Expression dotExp(Scope sc, Expression e, Identifier ident)
88 {
89 version (LOGDOTEXP) {
90 printf("TypeTypedef.dotExp(e = '%s', ident = '%s') '%s'\n", e.toChars(), ident.toChars(), toChars());
91 }
92 if (ident is Id.init_)
93 {
94 return Type.dotExp(sc, e, ident);
95 }
96 return sym.basetype.dotExp(sc, e, ident);
97 }
98
99 Expression getProperty(Loc loc, Identifier ident)
100 {
101 assert(false);
102 }
103
104 bool isbit()
105 {
106 assert(false);
107 }
108
109 bool isintegral()
110 {
111 //printf("TypeTypedef::isintegral()\n");
112 //printf("sym = '%s'\n", sym->toChars());
113 //printf("basetype = '%s'\n", sym->basetype->toChars());
114 return sym.basetype.isintegral();
115 }
116
117 bool isfloating()
118 {
119 return sym.basetype.isfloating();
120 }
121
122 bool isreal()
123 {
124 return sym.basetype.isreal();
125 }
126
127 bool isimaginary()
128 {
129 return sym.basetype.isimaginary();
130 }
131
132 bool iscomplex()
133 {
134 return sym.basetype.iscomplex();
135 }
136
137 bool isscalar()
138 {
139 return sym.basetype.isscalar();
140 }
141
142 bool isunsigned()
143 {
144 return sym.basetype.isunsigned();
145 }
146
147 bool checkBoolean()
148 {
149 assert(false);
150 }
151
152 int isAssignable()
153 {
154 return sym.basetype.isAssignable();
155 }
156
157 Type toBasetype()
158 {
159 if (sym.inuse)
160 {
161 sym.error("circular definition");
162 sym.basetype = Type.terror;
163 return Type.terror;
164 }
165 sym.inuse = 1;
166 Type t = sym.basetype.toBasetype();
167 sym.inuse = 0;
168 t = t.addMod(mod);
169 return t;
170 }
171
172 MATCH implicitConvTo(Type to)
173 {
174 MATCH m;
175
176 //printf("TypeTypedef::implicitConvTo(to = %s) %s\n", to->toChars(), toChars());
177 if (equals(to))
178 m = MATCHexact; // exact match
179 else if (sym.basetype.implicitConvTo(to))
180 m = MATCHconvert; // match with conversions
181 else if (ty == to.ty && sym == (cast(TypeTypedef)to).sym)
182 {
183 m = constConv(to);
184 }
185 else
186 m = MATCHnomatch; // no match
187 return m;
188 }
189
190 MATCH constConv(Type to)
191 {
192 assert(false);
193 }
194
195 Expression defaultInit(Loc loc)
196 {
197 Expression e;
198 Type bt;
199
200 version (LOGDEFAULTINIT) {
201 printf("TypeTypedef::defaultInit() '%s'\n", toChars());
202 }
203 if (sym.init)
204 {
205 //sym->init->toExpression()->print();
206 return sym.init.toExpression();
207 }
208 bt = sym.basetype;
209 e = bt.defaultInit(loc);
210 e.type = this;
211 while (bt.ty == Tsarray)
212 {
213 TypeSArray tsa = cast(TypeSArray)bt;
214 e.type = tsa.next;
215 bt = tsa.next.toBasetype();
216 }
217 return e;
218 }
219
220 bool isZeroInit(Loc loc)
221 {
222 if (sym.init)
223 {
224 if (sym.init.isVoidInitializer())
225 return true; // initialize voids to 0
226 Expression e = sym.init.toExpression();
227 if (e && e.isBool(false))
228 return true;
229
230 return false; // assume not
231 }
232 if (sym.inuse)
233 {
234 sym.error("circular definition");
235 sym.basetype = Type.terror;
236 }
237 sym.inuse = 1;
238 bool result = sym.basetype.isZeroInit(loc);
239 sym.inuse = 0;
240
241 return result;
242 }
243
244 dt_t** toDt(dt_t** pdt)
245 {
246 if (sym.init)
247 {
248 dt_t* dt = sym.init.toDt();
249
250 while (*pdt)
251 pdt = &((*pdt).DTnext);
252 *pdt = dt;
253 return pdt;
254 }
255
256 sym.basetype.toDt(pdt);
257 return pdt;
258 }
259
260 MATCH deduceType(Scope sc, Type tparam, TemplateParameters parameters, Objects dedtypes)
261 {
262 assert(false);
263 }
264
265 TypeInfoDeclaration getTypeInfoDeclaration()
266 {
267 return new TypeInfoTypedefDeclaration(this);
268 }
269
270 bool hasPointers()
271 {
272 return toBasetype().hasPointers();
273 }
274
275 Type toHeadMutable()
276 {
277 assert(false);
278 }
279
280 version (CPP_MANGLE) {
281 void toCppMangle(OutBuffer buf, CppMangleState* cms)
282 {
283 assert(false);
284 }
285 }
286
287 type* toCtype()
288 {
289 return sym.basetype.toCtype();
290 }
291
292 type* toCParamtype()
293 {
294 return sym.basetype.toCParamtype();
295 }
296 }