Mercurial > projects > ddmd
annotate dmd/interpret/Util.d @ 107:d8f19d85fadb
changes from interpret.c
| author | Trass3r |
|---|---|
| date | Tue, 31 Aug 2010 18:18:31 +0200 |
| parents | be2ab491772e |
| children | e28b18c23469 |
| rev | line source |
|---|---|
| 63 | 1 module dmd.interpret.Util; |
| 2 | |
| 3 import dmd.StructDeclaration; | |
| 4 import dmd.Expression; | |
| 107 | 5 import dmd.FuncDeclaration; |
| 63 | 6 import dmd.InterState; |
| 7 import dmd.ArrayTypes; | |
| 8 import dmd.GlobalExpressions; | |
| 9 import dmd.TOK; | |
| 10 import dmd.AssocArrayLiteralExp; | |
| 11 import dmd.IntegerExp; | |
| 12 import dmd.Type; | |
| 13 import dmd.Declaration; | |
| 14 import dmd.Loc; | |
| 15 import dmd.ArrayLiteralExp; | |
| 16 import dmd.TypeAArray; | |
| 107 | 17 import dmd.TypeFunction; |
| 63 | 18 import dmd.TypeSArray; |
| 107 | 19 import dmd.TY; |
| 63 | 20 import dmd.STC; |
| 21 import dmd.SymbolDeclaration; | |
| 22 import dmd.StructLiteralExp; | |
| 23 import dmd.VarDeclaration; | |
| 24 import dmd.Util; | |
| 25 | |
| 107 | 26 version(DMDV1) |
| 27 { | |
| 63 | 28 Expression interpret_aaLen(InterState istate, Expressions arguments) |
| 29 { | |
| 107 | 30 if (!arguments || arguments.dim != 1) |
| 63 | 31 return null; |
| 107 | 32 auto earg = arguments[0]; |
| 33 earg = earg.interpret(istate); | |
| 34 if (earg is EXP_CANT_INTERPRET) | |
| 63 | 35 return null; |
| 107 | 36 if (earg.op != TOKassocarrayliteral) |
| 63 | 37 return null; |
| 107 | 38 auto aae = cast(AssocArrayLiteralExp)earg; |
| 39 auto e = new IntegerExp(aae.loc, aae.keys.dim, Type.tsize_t); | |
| 40 return e; | |
| 63 | 41 } |
| 42 | |
| 43 Expression interpret_aaKeys(InterState istate, Expressions arguments) | |
| 44 { | |
| 45 version (LOG) { | |
| 107 | 46 writef("interpret_aaKeys()\n"); |
| 63 | 47 } |
| 107 | 48 if (!arguments || arguments.dim != 2) |
| 63 | 49 return null; |
| 107 | 50 auto earg = arguments[0]; |
| 51 earg = earg.interpret(istate); | |
| 52 if (earg is EXP_CANT_INTERPRET) | |
| 63 | 53 return null; |
| 107 | 54 if (earg.op != TOKassocarrayliteral) |
| 63 | 55 return null; |
| 107 | 56 auto aae = cast(AssocArrayLiteralExp)earg; |
| 57 auto e = new ArrayLiteralExp(aae.loc, aae.keys); | |
| 58 Type elemType = (cast(TypeAArray)aae.type).index; | |
| 59 e.type = new TypeSArray(elemType, new IntegerExp(arguments ? arguments.dim : 0)); | |
| 60 return e; | |
| 63 | 61 } |
| 62 | |
| 63 Expression interpret_aaValues(InterState istate, Expressions arguments) | |
| 64 { | |
| 107 | 65 //writef("interpret_aaValues()\n"); |
| 66 if (!arguments || arguments.dim != 3) | |
| 67 return null; | |
| 68 auto earg = arguments[0]; | |
| 69 earg = earg.interpret(istate); | |
| 70 if (earg is EXP_CANT_INTERPRET) | |
| 71 return null; | |
| 72 if (earg.op != TOKassocarrayliteral) | |
| 63 | 73 return null; |
| 107 | 74 auto aae = cast(AssocArrayLiteralExp)earg; |
| 75 auto e = new ArrayLiteralExp(aae.loc, aae.values); | |
| 76 Type elemType = (cast(TypeAArray)aae.type).next; | |
| 77 e.type = new TypeSArray(elemType, new IntegerExp(arguments ? arguments.dim : 0)); | |
| 78 //writef("result is %s\n", e.toChars()); | |
| 79 return e; | |
| 80 } | |
| 81 } | |
| 82 else version(DMDV2) | |
| 83 { | |
| 84 Expression interpret_length(InterState istate, Expression earg) | |
| 85 { | |
| 86 // writef("interpret_length()\n"); | |
| 87 earg = earg.interpret(istate); | |
| 88 if (earg == EXP_CANT_INTERPRET) | |
| 89 return null; | |
| 90 if (earg.op != TOKassocarrayliteral) | |
| 63 | 91 return null; |
| 107 | 92 AssocArrayLiteralExp aae = cast(AssocArrayLiteralExp)earg; |
| 93 Expression e = new IntegerExp(aae.loc, aae.keys.dim, Type.tsize_t); | |
| 94 return e; | |
| 95 } | |
| 96 | |
| 97 Expression interpret_keys(InterState istate, Expression earg, FuncDeclaration fd) | |
| 98 { | |
| 99 version(LOG) | |
| 100 writef("interpret_keys()\n"); | |
| 101 | |
| 102 earg = earg.interpret(istate); | |
| 103 if (earg == EXP_CANT_INTERPRET) | |
| 104 return null; | |
| 105 if (earg.op != TOKassocarrayliteral) | |
| 106 return null; | |
| 107 AssocArrayLiteralExp aae = cast(AssocArrayLiteralExp)earg; | |
| 108 Expression e = new ArrayLiteralExp(aae.loc, aae.keys); | |
| 109 assert(fd.type.ty == Tfunction); | |
| 110 assert(fd.type.nextOf().ty == Tarray); | |
| 111 Type elemType = (cast(TypeFunction)fd.type).nextOf().nextOf(); | |
| 112 e.type = new TypeSArray(elemType, new IntegerExp(aae.keys.dim)); | |
| 113 return e; | |
| 114 } | |
| 115 Expression interpret_values(InterState istate, Expression earg, FuncDeclaration fd) | |
| 116 { | |
| 117 //writef("interpret_values()\n"); | |
| 118 earg = earg.interpret(istate); | |
| 119 if (earg == EXP_CANT_INTERPRET) | |
| 63 | 120 return null; |
| 107 | 121 if (earg.op != TOKassocarrayliteral) |
| 122 return null; | |
| 123 AssocArrayLiteralExp aae = cast(AssocArrayLiteralExp)earg; | |
| 124 Expression e = new ArrayLiteralExp(aae.loc, aae.values); | |
| 125 assert(fd.type.ty == Tfunction); | |
| 126 assert(fd.type.nextOf().ty == Tarray); | |
| 127 Type elemType = (cast(TypeFunction)fd.type).nextOf().nextOf(); | |
| 128 e.type = new TypeSArray(elemType, new IntegerExp(aae.values.dim)); | |
| 129 //writef("result is %s\n", e.toChars()); | |
| 130 return e; | |
| 131 } | |
| 63 | 132 } |
| 133 | |
| 134 Expression getVarExp(Loc loc, InterState istate, Declaration d) | |
| 135 { | |
| 107 | 136 Expression e = EXP_CANT_INTERPRET; |
| 137 VarDeclaration v = d.isVarDeclaration(); | |
| 138 SymbolDeclaration s = d.isSymbolDeclaration(); | |
| 139 if (v) | |
| 140 { | |
| 63 | 141 ///version (DMDV2) { |
| 142 if ((v.isConst() || v.isInvariant() || v.storage_class & STCmanifest) && v.init && !v.value) | |
| 143 ///} else { | |
| 144 /// if (v.isConst() && v.init) | |
| 145 ///} | |
| 146 { | |
| 147 e = v.init.toExpression(); | |
| 148 if (e && !e.type) | |
| 149 e.type = v.type; | |
| 150 } | |
| 151 else | |
| 152 { | |
| 153 e = v.value; | |
| 154 if (v.isDataseg()) | |
| 155 { | |
| 156 error(loc, "static variable %s cannot be read at compile time", v.toChars()); | |
| 157 e = EXP_CANT_INTERPRET; | |
| 158 } | |
| 159 else if (!e) | |
| 160 error(loc, "variable %s is used before initialization", v.toChars()); | |
| 161 else if (e !is EXP_CANT_INTERPRET) | |
| 162 e = e.interpret(istate); | |
| 163 } | |
| 164 if (!e) | |
| 165 e = EXP_CANT_INTERPRET; | |
| 107 | 166 } |
| 167 else if (s) | |
| 168 { | |
| 63 | 169 if (s.dsym.toInitializer() == s.sym) |
| 170 { | |
| 171 Expressions exps = new Expressions(); | |
| 172 e = new StructLiteralExp(Loc(0), s.dsym, exps); | |
| 173 e = e.semantic(null); | |
| 174 } | |
| 107 | 175 } |
| 176 return e; | |
| 63 | 177 } |
| 178 | |
| 179 /* Helper functions for BinExp.interpretAssignCommon | |
| 180 */ | |
| 181 | |
| 182 /*************************************** | |
| 183 * Duplicate the elements array, then set field 'indexToChange' = newelem. | |
| 184 */ | |
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be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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diff
changeset
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185 Expressions changeOneElement(Expressions oldelems, size_t indexToChange, Expression newelem) |
| 63 | 186 { |
| 107 | 187 auto expsx = new Expressions(); |
| 188 expsx.setDim(oldelems.dim); | |
| 189 for (size_t j = 0; j < expsx.dim; j++) | |
| 190 { | |
| 63 | 191 if (j == indexToChange) |
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Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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192 expsx[j] = newelem; |
| 63 | 193 else |
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84
be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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diff
changeset
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194 expsx[j] = oldelems[j]; |
| 107 | 195 } |
| 196 return expsx; | |
| 63 | 197 } |
| 198 | |
| 199 /*************************************** | |
| 200 * Returns oldelems[0..insertpoint] ~ newelems ~ oldelems[insertpoint..$] | |
| 201 */ | |
| 202 Expressions spliceElements(Expressions oldelems, Expressions newelems, size_t insertpoint) | |
| 203 { | |
| 107 | 204 auto expsx = new Expressions(); |
| 205 expsx.setDim(oldelems.dim); | |
| 206 for (size_t j = 0; j < expsx.dim; j++) | |
| 207 { | |
| 63 | 208 if (j >= insertpoint && j < insertpoint + newelems.dim) |
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Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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diff
changeset
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209 expsx[j] = newelems[j - insertpoint]; |
| 63 | 210 else |
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84
be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
79
diff
changeset
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211 expsx[j] = oldelems[j]; |
| 107 | 212 } |
| 213 return expsx; | |
| 63 | 214 } |
| 215 | |
| 216 /****************************** | |
| 217 * Create an array literal consisting of 'elem' duplicated 'dim' times. | |
| 218 */ | |
| 219 ArrayLiteralExp createBlockDuplicatedArrayLiteral(Type type, Expression elem, size_t dim) | |
| 220 { | |
| 107 | 221 auto elements = new Expressions(); |
| 222 elements.setDim(dim); | |
| 223 for (size_t i = 0; i < dim; i++) { | |
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be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
79
diff
changeset
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224 elements[i] = elem; |
| 63 | 225 } |
| 226 | |
| 107 | 227 auto ae = new ArrayLiteralExp(Loc(0), elements); |
| 228 ae.type = type; | |
| 229 return ae; | |
| 63 | 230 } |
| 231 | |
| 232 | |
| 233 /******************************** | |
| 234 * Necessary because defaultInit() for a struct is a VarExp, not a StructLiteralExp. | |
| 235 */ | |
| 236 StructLiteralExp createDefaultInitStructLiteral(Loc loc, StructDeclaration sym) | |
| 237 { | |
| 107 | 238 Expressions structelems = new Expressions(); |
| 239 structelems.setDim(sym.fields.dim); | |
| 240 for (size_t j = 0; j < structelems.dim; j++) | |
| 241 { | |
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84
be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
79
diff
changeset
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242 structelems[j] = sym.fields[j].type.defaultInit(Loc(0)); |
| 107 | 243 } |
| 244 StructLiteralExp structinit = new StructLiteralExp(loc, sym, structelems); | |
| 245 // Why doesn't the StructLiteralExp constructor do this, when | |
| 246 // sym.type != null ? | |
| 247 structinit.type = sym.type; | |
| 248 return structinit; | |
| 63 | 249 } |
| 250 | |
| 251 /******************************** | |
| 252 * Add v to the istate list, unless it already exists there. | |
| 253 */ | |
| 254 void addVarToInterstate(InterState istate, VarDeclaration v) | |
| 255 { | |
| 107 | 256 if (!v.isParameter()) |
| 257 { | |
| 63 | 258 for (size_t i = 0; 1; i++) |
| 259 { | |
| 260 if (i == istate.vars.dim) | |
| 261 { | |
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Switch Arrays of Dsymbols to the new templated Vector type
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262 istate.vars.push(v); |
| 107 | 263 //writef("\tadding %s to istate\n", v.toChars()); |
| 63 | 264 break; |
| 265 } | |
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parents:
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diff
changeset
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266 if (v == cast(VarDeclaration)istate.vars[i]) |
| 63 | 267 break; |
| 268 } | |
| 107 | 269 } |
| 63 | 270 } |