Mercurial > projects > ddmd
annotate dmd/TypeDelegate.d @ 130:60bb0fe4563e
dmdfe 2.037 first main iteration
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Thu, 09 Sep 2010 22:51:44 +0100 |
| parents | e28b18c23469 |
| children | af1bebfd96a4 |
| rev | line source |
|---|---|
| 0 | 1 module dmd.TypeDelegate; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.Type; |
| 5 import dmd.TypeNext; | |
| 6 import dmd.MOD; | |
| 7 import dmd.OutBuffer; | |
| 8 import dmd.Id; | |
| 9 import dmd.AddExp; | |
| 10 import dmd.PtrExp; | |
| 11 import dmd.IntegerExp; | |
| 96 | 12 import dmd.MATCH; |
| 0 | 13 import dmd.NullExp; |
| 14 import dmd.TypeFunction; | |
| 15 import dmd.HdrGenState; | |
| 16 import dmd.Expression; | |
| 17 import dmd.Identifier; | |
| 18 import dmd.CppMangleState; | |
|
130
60bb0fe4563e
dmdfe 2.037 first main iteration
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
19 import dmd.Parameter; |
| 0 | 20 import dmd.Loc; |
| 21 import dmd.Scope; | |
| 22 import dmd.TypeInfoDeclaration; | |
| 23 import dmd.TypeInfoDelegateDeclaration; | |
| 24 import dmd.TY; | |
| 25 import dmd.Global; | |
| 26 | |
| 27 import dmd.backend.TYPE; | |
| 28 import dmd.backend.Symbol; | |
| 29 import dmd.backend.Classsym; | |
| 30 import dmd.backend.TYM; | |
| 31 import dmd.backend.SC; | |
| 32 import dmd.backend.Util; | |
| 33 import dmd.backend.LIST; | |
| 34 | |
| 35 class TypeDelegate : TypeNext | |
| 36 { | |
| 37 // .next is a TypeFunction | |
| 38 | |
| 39 this(Type t) | |
| 40 { | |
| 41 super(TY.Tfunction, t); | |
| 42 ty = TY.Tdelegate; | |
| 43 } | |
| 44 | |
| 45 version (DumbClone) { | |
| 46 } else { | |
| 47 Type clone() | |
| 48 { | |
| 49 assert(false); | |
| 50 } | |
| 51 } | |
| 72 | 52 override Type syntaxCopy() |
| 0 | 53 { |
| 54 Type t = next.syntaxCopy(); | |
| 55 if (t == next) | |
| 56 t = this; | |
| 57 else | |
| 58 { | |
| 59 t = new TypeDelegate(t); | |
| 60 t.mod = mod; | |
| 61 } | |
| 62 return t; | |
| 63 } | |
| 64 | |
| 72 | 65 override Type semantic(Loc loc, Scope sc) |
| 0 | 66 { |
| 67 if (deco) // if semantic() already run | |
| 68 { | |
| 69 //printf("already done\n"); | |
| 70 return this; | |
| 71 } | |
| 72 | |
| 73 next = next.semantic(loc, sc); | |
| 74 return merge(); | |
| 75 } | |
| 76 | |
| 72 | 77 override ulong size(Loc loc) |
| 0 | 78 { |
| 79 return PTRSIZE * 2; | |
| 80 } | |
| 81 | |
| 96 | 82 MATCH implicitConvTo(Type to) |
| 83 { | |
| 84 //writef("TypeDelegate::implicitConvTo(this=%p, to=%p)\n", this, to); | |
| 85 //writef("from: %s\n", toChars()); | |
| 86 //writef("to : %s\n", to.toChars()); | |
| 87 if (this == to) | |
| 88 return MATCHexact; | |
| 89 static if (false) // not allowing covariant conversions because it interferes with overriding | |
| 90 { | |
| 91 if (to.ty == Tdelegate && this.nextOf().covariant(to.nextOf()) == 1) | |
| 92 return MATCHconvert; | |
| 93 } | |
| 94 return MATCHnomatch; | |
| 95 } | |
| 96 | |
| 72 | 97 override void toCBuffer2(OutBuffer buf, HdrGenState* hgs, MOD mod) |
| 0 | 98 { |
| 99 if (mod != this.mod) | |
| 100 { | |
| 101 toCBuffer3(buf, hgs, mod); | |
| 102 return; | |
| 103 } | |
| 104 TypeFunction tf = cast(TypeFunction)next; | |
| 105 | |
| 106 tf.next.toCBuffer2(buf, hgs, MODundefined); | |
| 107 buf.writestring(" delegate"); | |
|
130
60bb0fe4563e
dmdfe 2.037 first main iteration
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
108 Parameter.argsToCBuffer(buf, hgs, tf.parameters, tf.varargs); |
| 0 | 109 } |
| 110 | |
| 72 | 111 override Expression defaultInit(Loc loc) |
| 0 | 112 { |
| 113 version (LOGDEFAULTINIT) { | |
| 114 printf("TypeDelegate.defaultInit() '%s'\n", toChars()); | |
| 115 } | |
| 116 Expression e; | |
| 117 e = new NullExp(loc); | |
| 118 e.type = this; | |
| 119 return e; | |
| 120 } | |
| 121 | |
| 72 | 122 override bool isZeroInit(Loc loc) |
| 0 | 123 { |
| 124 return true; | |
| 125 } | |
| 126 | |
| 72 | 127 override bool checkBoolean() |
| 0 | 128 { |
| 129 return true; | |
| 130 } | |
| 131 | |
| 72 | 132 override TypeInfoDeclaration getTypeInfoDeclaration() |
| 0 | 133 { |
| 134 return new TypeInfoDelegateDeclaration(this); | |
| 135 } | |
| 136 | |
| 72 | 137 override Expression dotExp(Scope sc, Expression e, Identifier ident) |
| 0 | 138 { |
| 139 version (LOGDOTEXP) { | |
| 140 printf("TypeDelegate.dotExp(e = '%s', ident = '%s')\n", e.toChars(), ident.toChars()); | |
| 141 } | |
| 142 if (ident == Id.ptr) | |
| 143 { | |
| 144 e.type = tvoidptr; | |
| 145 return e; | |
| 146 } | |
| 147 else if (ident == Id.funcptr) | |
| 148 { | |
| 149 e = e.addressOf(sc); | |
| 150 e.type = tvoidptr; | |
| 151 e = new AddExp(e.loc, e, new IntegerExp(PTRSIZE)); | |
| 152 e.type = tvoidptr; | |
| 153 e = new PtrExp(e.loc, e); | |
| 154 e.type = next.pointerTo(); | |
| 155 return e; | |
| 156 } | |
| 157 else | |
| 158 { | |
| 159 e = Type.dotExp(sc, e, ident); | |
| 160 } | |
| 161 return e; | |
| 162 } | |
| 163 | |
| 72 | 164 override bool hasPointers() |
| 0 | 165 { |
| 166 return true; | |
| 167 } | |
| 168 | |
| 169 version (CPP_MANGLE) { | |
| 170 void toCppMangle(OutBuffer buf, CppMangleState* cms) | |
| 171 { | |
| 172 assert(false); | |
| 173 } | |
| 174 } | |
| 175 | |
| 72 | 176 override type* toCtype() |
| 0 | 177 { |
| 178 type* t; | |
| 179 | |
| 180 if (ctype) | |
| 181 return ctype; | |
| 182 | |
| 183 if (0 && global.params.symdebug) | |
| 184 { | |
| 185 /* A delegate consists of: | |
| 186 * _Delegate { void* frameptr; Function *funcptr; } | |
| 187 */ | |
| 188 | |
| 189 static Symbol* s; | |
| 190 | |
| 191 if (!s) | |
| 192 { | |
| 193 s = symbol_calloc("_Delegate"); | |
| 194 s.Sclass = SC.SCstruct; | |
| 195 s.Sstruct = struct_calloc(); | |
| 196 s.Sstruct.Sflags |= 0; /// huh? | |
| 197 s.Sstruct.Salignsize = alignsize(); | |
| 198 s.Sstruct.Sstructalign = cast(ubyte)global.structalign; | |
| 199 s.Sstruct.Sstructsize = cast(uint)size(Loc(0)); | |
| 200 slist_add(s); | |
| 201 | |
| 202 Symbol* s1 = symbol_name("frameptr", SC.SCmember, Type.tvoidptr.toCtype()); | |
| 203 list_append(&s.Sstruct.Sfldlst, s1); | |
| 204 | |
| 205 Symbol* s2 = symbol_name("funcptr", SC.SCmember, Type.tvoidptr.toCtype()); | |
| 206 s2.Smemoff = cast(uint)Type.tvoidptr.size(); | |
| 207 list_append(&s.Sstruct.Sfldlst, s2); | |
| 208 } | |
| 209 | |
| 210 t = type_alloc(TYM.TYstruct); | |
| 211 t.Ttag = cast(Classsym*)s; // structure tag name | |
| 212 t.Tcount++; | |
| 213 s.Stype = t; | |
| 214 } | |
| 215 else | |
| 216 { | |
| 217 if (global.params.symdebug == 1) | |
| 218 { | |
| 219 // Generate D symbolic debug info, rather than C | |
| 220 t = type_allocn(TYM.TYdelegate, next.toCtype()); | |
| 221 } | |
| 222 else | |
| 223 t = type_fake(TYM.TYdelegate); | |
| 224 } | |
| 225 | |
| 226 t.Tcount++; | |
| 227 ctype = t; | |
| 228 return t; | |
| 229 } | |
| 72 | 230 } |