Mercurial > projects > ddmd
annotate dmd/SymOffExp.d @ 174:af724d3510d7
lot os toCBuffer methods implemented
moved shared Type.* stuff into Global
| author | korDen |
|---|---|
| date | Sun, 10 Oct 2010 03:47:23 +0400 |
| parents | af1bebfd96a4 |
| children | e3afd1303184 |
| rev | line source |
|---|---|
| 72 | 1 module dmd.SymOffExp; |
| 2 | |
| 114 | 3 import dmd.common; |
| 72 | 4 import dmd.Expression; |
| 5 import dmd.Declaration; | |
| 6 import dmd.MATCH; | |
| 7 import dmd.Type; | |
| 8 import dmd.OutBuffer; | |
| 9 import dmd.Loc; | |
| 10 import dmd.Scope; | |
| 11 import dmd.InlineDoState; | |
| 12 import dmd.HdrGenState; | |
| 13 import dmd.backend.dt_t; | |
| 0 | 14 import dmd.SymbolExp; |
| 15 import dmd.VarDeclaration; | |
| 16 import dmd.DelegateExp; | |
| 17 import dmd.ThisExp; | |
| 18 import dmd.FuncDeclaration; | |
| 19 import dmd.IntegerExp; | |
| 20 import dmd.ErrorExp; | |
| 72 | 21 import dmd.TY; |
| 0 | 22 import dmd.TOK; |
| 135 | 23 import dmd.STC; |
| 0 | 24 |
| 25 import dmd.backend.Symbol; | |
| 26 import dmd.backend.Util; | |
| 27 import dmd.backend.TYM; | |
| 72 | 28 |
| 0 | 29 class SymOffExp : SymbolExp |
| 30 { | |
| 31 uint offset; | |
| 32 | |
| 73 | 33 this(Loc loc, Declaration var, uint offset, bool hasOverloads = false) |
| 0 | 34 { |
| 35 super(loc, TOK.TOKsymoff, SymOffExp.sizeof, var, hasOverloads); | |
| 36 | |
| 37 this.offset = offset; | |
| 38 VarDeclaration v = var.isVarDeclaration(); | |
| 39 if (v && v.needThis()) | |
| 40 error("need 'this' for address of %s", v.toChars()); | |
| 41 } | |
| 42 | |
| 72 | 43 override Expression semantic(Scope sc) |
| 0 | 44 { |
| 45 version(LOGSEMANTIC) { | |
| 46 printf("SymOffExp::semantic('%s')\n", toChars()); | |
| 47 } | |
| 48 //var.semantic(sc); | |
| 49 if (!type) | |
| 50 type = var.type.pointerTo(); | |
| 51 VarDeclaration v = var.isVarDeclaration(); | |
| 52 if (v) | |
| 53 v.checkNestedReference(sc, loc); | |
| 54 return this; | |
| 55 } | |
| 56 | |
| 72 | 57 override void checkEscape() |
| 0 | 58 { |
| 59 VarDeclaration v = var.isVarDeclaration(); | |
| 60 if (v) | |
| 61 { | |
| 135 | 62 if (!v.isDataseg() && !(v.storage_class & (STC.STCref | STC.STCout))) |
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63 { /* BUG: This should be allowed: |
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64 * void foo() |
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65 * { int a; |
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66 * int* bar() { return &a; } |
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67 * } |
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68 */ |
| 135 | 69 error("escaping reference to local %s", v.toChars()); |
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70 } |
| 0 | 71 } |
| 72 } | |
| 73 | |
| 72 | 74 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 75 { |
| 174 | 76 if (offset) |
| 77 buf.printf("(& %s+%s)", var.toChars(), offset); /// | |
| 78 else | |
| 79 buf.printf("& %s", var.toChars()); | |
| 0 | 80 } |
| 81 | |
| 72 | 82 override int isConst() |
| 0 | 83 { |
| 84 return 2; | |
| 85 } | |
| 86 | |
| 72 | 87 override bool isBool(bool result) |
| 0 | 88 { |
| 129 | 89 return result; |
| 0 | 90 } |
| 91 | |
| 72 | 92 override Expression doInline(InlineDoState ids) |
| 0 | 93 { |
| 94 int i; | |
| 95 | |
| 96 //printf("SymOffExp.doInline(%s)\n", toChars()); | |
| 97 for (i = 0; i < ids.from.dim; i++) | |
| 98 { | |
| 99 if (var is cast(Declaration)ids.from.data[i]) | |
| 100 { | |
| 101 SymOffExp se = cast(SymOffExp)copy(); | |
| 102 | |
| 103 se.var = cast(Declaration)ids.to.data[i]; | |
| 104 return se; | |
| 105 } | |
| 106 } | |
| 107 return this; | |
| 108 } | |
| 109 | |
| 72 | 110 override MATCH implicitConvTo(Type t) |
| 0 | 111 { |
| 112 static if (false) { | |
| 113 printf("SymOffExp::implicitConvTo(this=%s, type=%s, t=%s)\n", toChars(), type.toChars(), t.toChars()); | |
| 114 } | |
| 115 MATCH result = type.implicitConvTo(t); | |
| 116 //printf("\tresult = %d\n", result); | |
| 117 | |
| 118 if (result == MATCHnomatch) | |
| 119 { | |
| 120 // Look for pointers to functions where the functions are overloaded. | |
| 121 FuncDeclaration f; | |
| 122 | |
| 123 t = t.toBasetype(); | |
| 124 if (type.ty == Tpointer && type.nextOf().ty == Tfunction && | |
| 125 (t.ty == Tpointer || t.ty == Tdelegate) && t.nextOf().ty == Tfunction) | |
| 126 { | |
| 127 f = var.isFuncDeclaration(); | |
| 128 if (f) | |
| 129 { | |
| 130 f = f.overloadExactMatch(t.nextOf()); | |
| 131 if (f) | |
| 132 { | |
| 133 if ((t.ty == Tdelegate && (f.needThis() || f.isNested())) || | |
| 134 (t.ty == Tpointer && !(f.needThis() || f.isNested()))) | |
| 135 { | |
| 136 result = MATCHexact; | |
| 137 } | |
| 138 } | |
| 139 } | |
| 140 } | |
| 141 } | |
| 142 //printf("\tresult = %d\n", result); | |
| 143 return result; | |
| 144 } | |
| 145 | |
| 72 | 146 override Expression castTo(Scope sc, Type t) |
| 0 | 147 { |
| 148 static if (false) { | |
| 149 printf("SymOffExp::castTo(this=%s, type=%s, t=%s)\n", toChars(), type.toChars(), t.toChars()); | |
| 150 } | |
| 73 | 151 if (type == t && !hasOverloads) |
| 0 | 152 return this; |
| 153 | |
| 154 Expression e; | |
| 155 Type tb = t.toBasetype(); | |
| 156 Type typeb = type.toBasetype(); | |
| 157 | |
| 158 if (tb != typeb) | |
| 159 { | |
| 160 // Look for pointers to functions where the functions are overloaded. | |
| 161 FuncDeclaration f; | |
| 162 | |
| 163 if (hasOverloads && | |
| 164 typeb.ty == Tpointer && typeb.nextOf().ty == Tfunction && | |
| 165 (tb.ty == Tpointer || tb.ty == Tdelegate) && tb.nextOf().ty == Tfunction) | |
| 166 { | |
| 167 f = var.isFuncDeclaration(); | |
| 168 if (f) | |
| 169 { | |
| 170 f = f.overloadExactMatch(tb.nextOf()); | |
| 171 if (f) | |
| 172 { | |
| 173 if (tb.ty == Tdelegate) | |
| 174 { | |
| 175 if (f.needThis() && hasThis(sc)) | |
| 176 { | |
| 177 e = new DelegateExp(loc, new ThisExp(loc), f); | |
| 178 e = e.semantic(sc); | |
| 179 } | |
| 180 else if (f.isNested()) | |
| 181 { | |
| 182 e = new DelegateExp(loc, new IntegerExp(0), f); | |
| 183 e = e.semantic(sc); | |
| 184 } | |
| 185 else if (f.needThis()) | |
| 186 { | |
| 187 error("no 'this' to create delegate for %s", f.toChars()); | |
| 188 e = new ErrorExp(); | |
| 189 } | |
| 190 else | |
| 191 { | |
| 192 error("cannot cast from function pointer to delegate"); | |
| 193 e = new ErrorExp(); | |
| 194 } | |
| 195 } | |
| 196 else | |
| 197 { | |
| 198 e = new SymOffExp(loc, f, 0); | |
| 199 e.type = t; | |
| 200 } | |
| 201 version (DMDV2) { | |
| 202 f.tookAddressOf++; | |
| 203 } | |
| 204 return e; | |
| 205 } | |
| 206 } | |
| 207 } | |
| 208 e = Expression.castTo(sc, t); | |
| 209 } | |
| 210 else | |
| 211 { | |
| 212 e = copy(); | |
| 213 e.type = t; | |
| 73 | 214 (cast(SymOffExp)e).hasOverloads = false; |
| 0 | 215 } |
| 216 return e; | |
| 217 } | |
| 218 | |
| 72 | 219 override void scanForNestedRef(Scope sc) |
| 0 | 220 { |
| 72 | 221 //printf("SymOffExp.scanForNestedRef(%s)\n", toChars()); |
| 222 VarDeclaration v = var.isVarDeclaration(); | |
| 223 if (v) | |
| 64 | 224 v.checkNestedReference(sc, Loc(0)); |
| 0 | 225 } |
| 226 | |
| 72 | 227 override dt_t** toDt(dt_t** pdt) |
| 0 | 228 { |
| 229 //printf("SymOffExp.toDt('%s')\n", var.toChars()); | |
| 230 assert(var); | |
| 231 if (!(var.isDataseg() || var.isCodeseg()) || | |
| 232 var.needThis() || | |
| 233 var.isThreadlocal() | |
| 234 ) | |
| 235 { | |
| 236 debug writef("SymOffExp.toDt()\n"); | |
| 237 error("non-constant expression %s", toChars()); | |
| 238 return pdt; | |
| 239 } | |
| 240 | |
| 241 Symbol* s = var.toSymbol(); | |
| 242 return dtxoff(pdt, s, offset, TYnptr); | |
| 243 } | |
|
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6da99741178e
e2ir.c changes, mainly accounts for static arrays being value types now
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244 |
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e2ir.c changes, mainly accounts for static arrays being value types now
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245 static if (false) |
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e2ir.c changes, mainly accounts for static arrays being value types now
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246 { |
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247 override elem* toElem(IRState* irs) |
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248 { |
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6da99741178e
e2ir.c changes, mainly accounts for static arrays being value types now
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249 assert(false); // this function is #if 0'ed out in dmd |
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6da99741178e
e2ir.c changes, mainly accounts for static arrays being value types now
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250 } |
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e2ir.c changes, mainly accounts for static arrays being value types now
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251 } |
| 0 | 252 } |
| 253 |