Mercurial > projects > ddmd
annotate dmd/TemplateTypeParameter.d @ 192:eb38fdcb3e62 default tip
updated to compile with dmd2.062
| author | korDen |
|---|---|
| date | Sat, 02 Mar 2013 01:25:52 -0800 |
| parents | b0d41ff5e0df |
| children |
| rev | line source |
|---|---|
| 0 | 1 module dmd.TemplateTypeParameter; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.TemplateParameter; |
| 5 import dmd.Type; | |
| 6 import dmd.Loc; | |
| 7 import dmd.Identifier; | |
| 8 import dmd.Scope; | |
| 9 import dmd.OutBuffer; | |
| 10 import dmd.HdrGenState; | |
| 11 import dmd.Declaration; | |
| 12 import dmd.ArrayTypes; | |
| 13 import dmd.TypeIdentifier; | |
| 14 import dmd.AliasDeclaration; | |
| 15 import dmd.Util; | |
| 16 import dmd.MATCH; | |
| 17 import dmd.Dsymbol; | |
| 18 | |
|
187
b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
Abscissa
parents:
178
diff
changeset
|
19 import dmd.DDMDExtensions; |
|
b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
Abscissa
parents:
178
diff
changeset
|
20 |
| 0 | 21 class TemplateTypeParameter : TemplateParameter |
| 22 { | |
|
187
b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
Abscissa
parents:
178
diff
changeset
|
23 mixin insertMemberExtension!(typeof(this)); |
|
b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
Abscissa
parents:
178
diff
changeset
|
24 |
| 0 | 25 /* Syntax: |
| 26 * ident : specType = defaultType | |
| 27 */ | |
| 28 Type specType; // type parameter: if !=null, this is the type specialization | |
| 29 Type defaultType; | |
| 30 | |
| 31 this(Loc loc, Identifier ident, Type specType, Type defaultType) | |
| 32 { | |
| 178 | 33 register(); |
| 0 | 34 super(loc, ident); |
| 35 this.ident = ident; | |
| 36 this.specType = specType; | |
| 37 this.defaultType = defaultType; | |
| 38 } | |
| 39 | |
| 72 | 40 override TemplateTypeParameter isTemplateTypeParameter() |
| 0 | 41 { |
| 42 return this; | |
| 43 } | |
| 44 | |
| 72 | 45 override TemplateParameter syntaxCopy() |
| 0 | 46 { |
| 51 | 47 TemplateTypeParameter tp = new TemplateTypeParameter(loc, ident, specType, defaultType); |
| 48 if (tp.specType) | |
| 49 tp.specType = specType.syntaxCopy(); | |
| 50 if (defaultType) | |
| 51 tp.defaultType = defaultType.syntaxCopy(); | |
| 52 return tp; | |
| 0 | 53 } |
| 54 | |
| 72 | 55 override void declareParameter(Scope sc) |
| 0 | 56 { |
| 57 //printf("TemplateTypeParameter.declareParameter('%s')\n", ident.toChars()); | |
| 58 TypeIdentifier ti = new TypeIdentifier(loc, ident); | |
| 59 sparam = new AliasDeclaration(loc, ident, ti); | |
| 60 if (!sc.insert(sparam)) | |
| 61 error(loc, "parameter '%s' multiply defined", ident.toChars()); | |
| 62 } | |
| 63 | |
| 72 | 64 override void semantic(Scope sc) |
| 0 | 65 { |
| 66 //printf("TemplateTypeParameter.semantic('%s')\n", ident.toChars()); | |
| 67 if (specType) | |
| 68 { | |
| 69 specType = specType.semantic(loc, sc); | |
| 70 } | |
| 71 static if (false) { // Don't do semantic() until instantiation | |
| 72 if (defaultType) | |
| 73 { | |
| 74 defaultType = defaultType.semantic(loc, sc); | |
| 75 } | |
| 76 } | |
| 77 } | |
| 78 | |
| 72 | 79 override void print(Object oarg, Object oded) |
| 0 | 80 { |
| 81 assert(false); | |
| 82 } | |
| 83 | |
| 72 | 84 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 85 { |
| 86 buf.writestring(ident.toChars()); | |
| 87 if (specType) | |
| 88 { | |
| 89 buf.writestring(" : "); | |
| 90 specType.toCBuffer(buf, null, hgs); | |
| 91 } | |
| 92 if (defaultType) | |
| 93 { | |
| 94 buf.writestring(" = "); | |
| 95 defaultType.toCBuffer(buf, null, hgs); | |
| 96 } | |
| 97 } | |
| 98 | |
| 72 | 99 override Object specialization() |
| 0 | 100 { |
| 101 return specType; | |
| 102 } | |
| 103 | |
| 72 | 104 override Object defaultArg(Loc loc, Scope sc) |
| 0 | 105 { |
| 106 Type t; | |
| 107 | |
| 108 t = defaultType; | |
| 109 if (t) | |
| 110 { | |
| 111 t = t.syntaxCopy(); | |
| 112 t = t.semantic(loc, sc); | |
| 113 } | |
| 114 return t; | |
| 115 } | |
| 116 | |
| 72 | 117 override bool overloadMatch(TemplateParameter) |
| 0 | 118 { |
| 119 assert(false); | |
| 120 } | |
| 121 | |
| 122 /******************************************* | |
| 123 * Match to a particular TemplateParameter. | |
| 124 * Input: | |
| 125 * i i'th argument | |
| 126 * tiargs[] actual arguments to template instance | |
| 127 * parameters[] template parameters | |
| 128 * dedtypes[] deduced arguments to template instance | |
| 129 * *psparam set to symbol declared and initialized to dedtypes[i] | |
| 130 * flags 1: don't do 'toHeadMutable()' | |
| 131 */ | |
| 72 | 132 override MATCH matchArg(Scope sc, Objects tiargs, int i, TemplateParameters parameters, Objects dedtypes, Declaration* psparam, int flags) |
| 0 | 133 { |
| 134 //printf("TemplateTypeParameter.matchArg()\n"); | |
| 135 Type t; | |
| 136 Object oarg; | |
| 137 MATCH m = MATCHexact; | |
| 138 Type ta; | |
| 139 | |
| 140 if (i < tiargs.dim) | |
|
113
3482c73a991b
More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
94
diff
changeset
|
141 oarg = tiargs[i]; |
| 0 | 142 else |
| 143 { | |
| 144 // Get default argument instead | |
| 145 oarg = defaultArg(loc, sc); | |
| 146 if (!oarg) | |
| 147 { | |
| 148 assert(i < dedtypes.dim); | |
| 149 // It might have already been deduced | |
|
113
3482c73a991b
More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
94
diff
changeset
|
150 oarg = dedtypes[i]; |
| 0 | 151 if (!oarg) |
| 152 { | |
| 153 goto Lnomatch; | |
| 154 } | |
| 155 flags |= 1; // already deduced, so don't to toHeadMutable() | |
| 156 } | |
| 157 } | |
| 158 | |
| 159 ta = isType(oarg); | |
| 160 if (!ta) | |
| 161 { | |
| 162 //printf("%s %p %p %p\n", oarg.toChars(), isExpression(oarg), isDsymbol(oarg), isTuple(oarg)); | |
| 163 goto Lnomatch; | |
| 164 } | |
| 165 //printf("ta is %s\n", ta.toChars()); | |
| 166 | |
|
113
3482c73a991b
More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
94
diff
changeset
|
167 t = cast(Type)dedtypes[i]; |
| 0 | 168 |
| 169 if (specType) | |
| 170 { | |
| 171 //printf("\tcalling deduceType(): ta is %s, specType is %s\n", ta.toChars(), specType.toChars()); | |
| 172 MATCH m2 = ta.deduceType(sc, specType, parameters, dedtypes); | |
| 173 if (m2 == MATCHnomatch) | |
| 174 { | |
| 175 //printf("\tfailed deduceType\n"); | |
| 176 goto Lnomatch; | |
| 177 } | |
| 178 | |
| 179 if (m2 < m) | |
| 180 m = m2; | |
|
113
3482c73a991b
More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
94
diff
changeset
|
181 t = cast(Type)dedtypes[i]; |
| 0 | 182 } |
| 183 else | |
| 184 { | |
| 185 // So that matches with specializations are better | |
| 186 m = MATCHconvert; | |
| 187 | |
| 188 /* This is so that: | |
| 189 * template Foo(T), Foo!(const int), => ta == int | |
| 190 */ | |
| 191 // if (!(flags & 1)) | |
| 192 // ta = ta.toHeadMutable(); | |
| 193 | |
| 194 if (t) | |
| 195 { // Must match already deduced type | |
| 196 | |
| 197 m = MATCHexact; | |
| 198 if (!t.equals(ta)) | |
| 199 { | |
| 200 //printf("t = %s ta = %s\n", t.toChars(), ta.toChars()); | |
| 201 goto Lnomatch; | |
| 202 } | |
| 203 } | |
| 204 } | |
| 205 | |
| 206 if (!t) | |
| 207 { | |
|
94
3a0b150c9841
Objects -> Vector!Object iteration 1
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
72
diff
changeset
|
208 dedtypes[i] = ta; |
| 0 | 209 t = ta; |
| 210 } | |
| 211 | |
| 212 *psparam = new AliasDeclaration(loc, ident, t); | |
| 213 //printf("\tm = %d\n", m); | |
| 214 return m; | |
| 215 | |
| 216 Lnomatch: | |
| 217 *psparam = null; | |
| 218 //printf("\tm = %d\n", MATCHnomatch); | |
| 219 return MATCHnomatch; | |
| 220 } | |
| 221 | |
|
94
3a0b150c9841
Objects -> Vector!Object iteration 1
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
72
diff
changeset
|
222 override Object dummyArg() |
| 0 | 223 { |
| 51 | 224 Type t; |
| 225 | |
| 226 if (specType) | |
| 227 t = specType; | |
| 228 else | |
| 229 { | |
| 230 // Use this for alias-parameter's too (?) | |
| 231 t = new TypeIdentifier(loc, ident); | |
| 232 } | |
|
94
3a0b150c9841
Objects -> Vector!Object iteration 1
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
72
diff
changeset
|
233 return t; |
| 0 | 234 } |
| 72 | 235 } |