1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
|
/* NSC -- new Scala compiler
* Copyright 2005-2012 LAMP/EPFL
* @author Martin Odersky
*/
package dotty.tools.dotc
package backend.jvm
import dotty.tools.backend.jvm.GenBCode
import dotty.tools.dotc.core.Names.TermName
import dotty.tools.dotc.core.Types.{ErrorType, Type}
import scala.collection.{ mutable, immutable }
import core.Contexts.Context
import core.Symbols.{Symbol, NoSymbol}
/** Scala primitive operations are represented as methods in `Any` and
* `AnyVal` subclasses. Here we demultiplex them by providing a mapping
* from their symbols to integers. Different methods exist for
* different value types, but with the same meaning (like plus, minus,
* etc.). They will all be mapped to the same int.
*
* Note: The three equal methods have the following semantics:
* - `"=="` checks for `null`, and if non-null, calls
* `java.lang.Object.equals`
* `(class: Any; modifier: final)`. Primitive: `EQ`
* - `"eq"` usual reference comparison
* `(class: AnyRef; modifier: final)`. Primitive: `ID`
* - `"equals"` user-defined equality (Java semantics)
* `(class: Object; modifier: none)`. Primitive: `EQUALS`
*
* Inspired from the `scalac` compiler.
*/
class DottyPrimitives(ctx: Context, genBcode: GenBCode) {
import scala.tools.nsc.backend.ScalaPrimitives._
private lazy val primitives: immutable.Map[Symbol, Int] = init
/** Return the code for the given symbol. */
def getPrimitive(sym: Symbol): Int = {
assert(isPrimitive(sym), "Unknown primitive " + sym)
primitives(sym)
}
/**
* Return the primitive code of the given operation. If the
* operation is an array get/set, we inspect the type of the receiver
* to demux the operation.
*
* @param fun The method symbol
* @param tpe The type of the receiver object. It is used only for array
* operations
*/
def getPrimitive(fun: Symbol, tpe: Type)(implicit ctx: Context): Int = {
val defn = ctx.definitions
val code = getPrimitive(fun)
import genBcode.bTypes._
def elementType = tpe.widenDealias match {
case defn.ArrayType(el) => el
case _ =>
ctx.error(s"expected Array $tpe")
ErrorType
}
code match {
case APPLY =>
genBcode.toTypeKind(elementType) match {
case BOOL => ZARRAY_GET
case BYTE => BARRAY_GET
case SHORT => SARRAY_GET
case CHAR => CARRAY_GET
case INT => IARRAY_GET
case LONG => LARRAY_GET
case FLOAT => FARRAY_GET
case DOUBLE => DARRAY_GET
case _ => OARRAY_GET
}
case UPDATE =>
genBcode.toTypeKind(elementType) match {
case BOOL => ZARRAY_SET
case BYTE => BARRAY_SET
case SHORT => SARRAY_SET
case CHAR => CARRAY_SET
case INT => IARRAY_SET
case LONG => LARRAY_SET
case FLOAT => FARRAY_SET
case DOUBLE => DARRAY_SET
case _ => OARRAY_SET
}
case LENGTH =>
genBcode.toTypeKind(elementType) match {
case BOOL => ZARRAY_LENGTH
case BYTE => BARRAY_LENGTH
case SHORT => SARRAY_LENGTH
case CHAR => CARRAY_LENGTH
case INT => IARRAY_LENGTH
case LONG => LARRAY_LENGTH
case FLOAT => FARRAY_LENGTH
case DOUBLE => DARRAY_LENGTH
case _ => OARRAY_LENGTH
}
case _ =>
code
}
}
/** Initialize the primitive map */
private def init: immutable.Map[Symbol, Int] = {
implicit val ctx = this.ctx
import core.Symbols.defn
val primitives = new mutable.HashMap[Symbol, Int]()
/** Add a primitive operation to the map */
def addPrimitive(s: Symbol, code: Int): Unit = {
assert(!(primitives contains s), "Duplicate primitive " + s)
primitives(s) = code
}
def addPrimitives(cls: Symbol, method: TermName, code: Int)(implicit ctx: Context): Unit = {
val alts = cls.info.member(method).alternatives.map(_.symbol)
if (alts.isEmpty)
ctx.error(s"Unknown primitive method $cls.$method")
else alts foreach (s =>
addPrimitive(s,
s.info.paramTypess match {
case List(tp :: _) if code == ADD && tp =:= ctx.definitions.StringType => CONCAT
case _ => code
}
)
)
}
// scala.Any
addPrimitive(defn.Any_==, EQ)
addPrimitive(defn.Any_!=, NE)
addPrimitive(defn.Any_isInstanceOf, IS)
addPrimitive(defn.Any_asInstanceOf, AS)
addPrimitive(defn.Any_##, HASH)
// java.lang.Object
addPrimitive(defn.Object_eq, ID)
addPrimitive(defn.Object_ne, NI)
addPrimitive(defn.Any_==, EQ)
addPrimitive(defn.Any_!=, NE)
addPrimitive(defn.Object_synchronized, SYNCHRONIZED)
addPrimitive(defn.Any_isInstanceOf, IS)
addPrimitive(defn.Any_asInstanceOf, AS)
// java.lang.String
addPrimitive(defn.String_+, CONCAT)
import core.StdNames.nme
// scala.Array
lazy val ArrayClass = defn.ArrayClass
addPrimitives(ArrayClass, nme.length, LENGTH)
addPrimitives(ArrayClass, nme.apply, APPLY)
addPrimitives(ArrayClass, nme.update, UPDATE)
// scala.Boolean
lazy val BooleanClass = defn.BooleanClass
addPrimitives(BooleanClass, nme.EQ, EQ)
addPrimitives(BooleanClass, nme.NE, NE)
addPrimitives(BooleanClass, nme.UNARY_!, ZNOT)
addPrimitives(BooleanClass, nme.ZOR, ZOR)
addPrimitives(BooleanClass, nme.ZAND, ZAND)
addPrimitives(BooleanClass, nme.OR, OR)
addPrimitives(BooleanClass, nme.AND, AND)
addPrimitives(BooleanClass, nme.XOR, XOR)
// scala.Byte
lazy val ByteClass = defn.ByteClass
addPrimitives(ByteClass, nme.EQ, EQ)
addPrimitives(ByteClass, nme.NE, NE)
addPrimitives(ByteClass, nme.ADD, ADD)
addPrimitives(ByteClass, nme.SUB, SUB)
addPrimitives(ByteClass, nme.MUL, MUL)
addPrimitives(ByteClass, nme.DIV, DIV)
addPrimitives(ByteClass, nme.MOD, MOD)
addPrimitives(ByteClass, nme.LT, LT)
addPrimitives(ByteClass, nme.LE, LE)
addPrimitives(ByteClass, nme.GT, GT)
addPrimitives(ByteClass, nme.GE, GE)
addPrimitives(ByteClass, nme.XOR, XOR)
addPrimitives(ByteClass, nme.OR, OR)
addPrimitives(ByteClass, nme.AND, AND)
addPrimitives(ByteClass, nme.LSL, LSL)
addPrimitives(ByteClass, nme.LSR, LSR)
addPrimitives(ByteClass, nme.ASR, ASR)
// conversions
addPrimitives(ByteClass, nme.toByte, B2B)
addPrimitives(ByteClass, nme.toShort, B2S)
addPrimitives(ByteClass, nme.toChar, B2C)
addPrimitives(ByteClass, nme.toInt, B2I)
addPrimitives(ByteClass, nme.toLong, B2L)
// unary methods
addPrimitives(ByteClass, nme.UNARY_+, POS)
addPrimitives(ByteClass, nme.UNARY_-, NEG)
addPrimitives(ByteClass, nme.UNARY_~, NOT)
addPrimitives(ByteClass, nme.toFloat, B2F)
addPrimitives(ByteClass, nme.toDouble, B2D)
// scala.Short
lazy val ShortClass = defn.ShortClass
addPrimitives(ShortClass, nme.EQ, EQ)
addPrimitives(ShortClass, nme.NE, NE)
addPrimitives(ShortClass, nme.ADD, ADD)
addPrimitives(ShortClass, nme.SUB, SUB)
addPrimitives(ShortClass, nme.MUL, MUL)
addPrimitives(ShortClass, nme.DIV, DIV)
addPrimitives(ShortClass, nme.MOD, MOD)
addPrimitives(ShortClass, nme.LT, LT)
addPrimitives(ShortClass, nme.LE, LE)
addPrimitives(ShortClass, nme.GT, GT)
addPrimitives(ShortClass, nme.GE, GE)
addPrimitives(ShortClass, nme.XOR, XOR)
addPrimitives(ShortClass, nme.OR, OR)
addPrimitives(ShortClass, nme.AND, AND)
addPrimitives(ShortClass, nme.LSL, LSL)
addPrimitives(ShortClass, nme.LSR, LSR)
addPrimitives(ShortClass, nme.ASR, ASR)
// conversions
addPrimitives(ShortClass, nme.toByte, S2B)
addPrimitives(ShortClass, nme.toShort, S2S)
addPrimitives(ShortClass, nme.toChar, S2C)
addPrimitives(ShortClass, nme.toInt, S2I)
addPrimitives(ShortClass, nme.toLong, S2L)
// unary methods
addPrimitives(ShortClass, nme.UNARY_+, POS)
addPrimitives(ShortClass, nme.UNARY_-, NEG)
addPrimitives(ShortClass, nme.UNARY_~, NOT)
addPrimitives(ShortClass, nme.toFloat, S2F)
addPrimitives(ShortClass, nme.toDouble, S2D)
// scala.Char
lazy val CharClass = defn.CharClass
addPrimitives(CharClass, nme.EQ, EQ)
addPrimitives(CharClass, nme.NE, NE)
addPrimitives(CharClass, nme.ADD, ADD)
addPrimitives(CharClass, nme.SUB, SUB)
addPrimitives(CharClass, nme.MUL, MUL)
addPrimitives(CharClass, nme.DIV, DIV)
addPrimitives(CharClass, nme.MOD, MOD)
addPrimitives(CharClass, nme.LT, LT)
addPrimitives(CharClass, nme.LE, LE)
addPrimitives(CharClass, nme.GT, GT)
addPrimitives(CharClass, nme.GE, GE)
addPrimitives(CharClass, nme.XOR, XOR)
addPrimitives(CharClass, nme.OR, OR)
addPrimitives(CharClass, nme.AND, AND)
addPrimitives(CharClass, nme.LSL, LSL)
addPrimitives(CharClass, nme.LSR, LSR)
addPrimitives(CharClass, nme.ASR, ASR)
// conversions
addPrimitives(CharClass, nme.toByte, C2B)
addPrimitives(CharClass, nme.toShort, C2S)
addPrimitives(CharClass, nme.toChar, C2C)
addPrimitives(CharClass, nme.toInt, C2I)
addPrimitives(CharClass, nme.toLong, C2L)
// unary methods
addPrimitives(CharClass, nme.UNARY_+, POS)
addPrimitives(CharClass, nme.UNARY_-, NEG)
addPrimitives(CharClass, nme.UNARY_~, NOT)
addPrimitives(CharClass, nme.toFloat, C2F)
addPrimitives(CharClass, nme.toDouble, C2D)
// scala.Int
lazy val IntClass = defn.IntClass
addPrimitives(IntClass, nme.EQ, EQ)
addPrimitives(IntClass, nme.NE, NE)
addPrimitives(IntClass, nme.ADD, ADD)
addPrimitives(IntClass, nme.SUB, SUB)
addPrimitives(IntClass, nme.MUL, MUL)
addPrimitives(IntClass, nme.DIV, DIV)
addPrimitives(IntClass, nme.MOD, MOD)
addPrimitives(IntClass, nme.LT, LT)
addPrimitives(IntClass, nme.LE, LE)
addPrimitives(IntClass, nme.GT, GT)
addPrimitives(IntClass, nme.GE, GE)
addPrimitives(IntClass, nme.XOR, XOR)
addPrimitives(IntClass, nme.OR, OR)
addPrimitives(IntClass, nme.AND, AND)
addPrimitives(IntClass, nme.LSL, LSL)
addPrimitives(IntClass, nme.LSR, LSR)
addPrimitives(IntClass, nme.ASR, ASR)
// conversions
addPrimitives(IntClass, nme.toByte, I2B)
addPrimitives(IntClass, nme.toShort, I2S)
addPrimitives(IntClass, nme.toChar, I2C)
addPrimitives(IntClass, nme.toInt, I2I)
addPrimitives(IntClass, nme.toLong, I2L)
// unary methods
addPrimitives(IntClass, nme.UNARY_+, POS)
addPrimitives(IntClass, nme.UNARY_-, NEG)
addPrimitives(IntClass, nme.UNARY_~, NOT)
addPrimitives(IntClass, nme.toFloat, I2F)
addPrimitives(IntClass, nme.toDouble, I2D)
// scala.Long
lazy val LongClass = defn.LongClass
addPrimitives(LongClass, nme.EQ, EQ)
addPrimitives(LongClass, nme.NE, NE)
addPrimitives(LongClass, nme.ADD, ADD)
addPrimitives(LongClass, nme.SUB, SUB)
addPrimitives(LongClass, nme.MUL, MUL)
addPrimitives(LongClass, nme.DIV, DIV)
addPrimitives(LongClass, nme.MOD, MOD)
addPrimitives(LongClass, nme.LT, LT)
addPrimitives(LongClass, nme.LE, LE)
addPrimitives(LongClass, nme.GT, GT)
addPrimitives(LongClass, nme.GE, GE)
addPrimitives(LongClass, nme.XOR, XOR)
addPrimitives(LongClass, nme.OR, OR)
addPrimitives(LongClass, nme.AND, AND)
addPrimitives(LongClass, nme.LSL, LSL)
addPrimitives(LongClass, nme.LSR, LSR)
addPrimitives(LongClass, nme.ASR, ASR)
// conversions
addPrimitives(LongClass, nme.toByte, L2B)
addPrimitives(LongClass, nme.toShort, L2S)
addPrimitives(LongClass, nme.toChar, L2C)
addPrimitives(LongClass, nme.toInt, L2I)
addPrimitives(LongClass, nme.toLong, L2L)
// unary methods
addPrimitives(LongClass, nme.UNARY_+, POS)
addPrimitives(LongClass, nme.UNARY_-, NEG)
addPrimitives(LongClass, nme.UNARY_~, NOT)
addPrimitives(LongClass, nme.toFloat, L2F)
addPrimitives(LongClass, nme.toDouble, L2D)
// scala.Float
lazy val FloatClass = defn.FloatClass
addPrimitives(FloatClass, nme.EQ, EQ)
addPrimitives(FloatClass, nme.NE, NE)
addPrimitives(FloatClass, nme.ADD, ADD)
addPrimitives(FloatClass, nme.SUB, SUB)
addPrimitives(FloatClass, nme.MUL, MUL)
addPrimitives(FloatClass, nme.DIV, DIV)
addPrimitives(FloatClass, nme.MOD, MOD)
addPrimitives(FloatClass, nme.LT, LT)
addPrimitives(FloatClass, nme.LE, LE)
addPrimitives(FloatClass, nme.GT, GT)
addPrimitives(FloatClass, nme.GE, GE)
// conversions
addPrimitives(FloatClass, nme.toByte, F2B)
addPrimitives(FloatClass, nme.toShort, F2S)
addPrimitives(FloatClass, nme.toChar, F2C)
addPrimitives(FloatClass, nme.toInt, F2I)
addPrimitives(FloatClass, nme.toLong, F2L)
addPrimitives(FloatClass, nme.toFloat, F2F)
addPrimitives(FloatClass, nme.toDouble, F2D)
// unary methods
addPrimitives(FloatClass, nme.UNARY_+, POS)
addPrimitives(FloatClass, nme.UNARY_-, NEG)
// scala.Double
lazy val DoubleClass = defn.DoubleClass
addPrimitives(DoubleClass, nme.EQ, EQ)
addPrimitives(DoubleClass, nme.NE, NE)
addPrimitives(DoubleClass, nme.ADD, ADD)
addPrimitives(DoubleClass, nme.SUB, SUB)
addPrimitives(DoubleClass, nme.MUL, MUL)
addPrimitives(DoubleClass, nme.DIV, DIV)
addPrimitives(DoubleClass, nme.MOD, MOD)
addPrimitives(DoubleClass, nme.LT, LT)
addPrimitives(DoubleClass, nme.LE, LE)
addPrimitives(DoubleClass, nme.GT, GT)
addPrimitives(DoubleClass, nme.GE, GE)
// conversions
addPrimitives(DoubleClass, nme.toByte, D2B)
addPrimitives(DoubleClass, nme.toShort, D2S)
addPrimitives(DoubleClass, nme.toChar, D2C)
addPrimitives(DoubleClass, nme.toInt, D2I)
addPrimitives(DoubleClass, nme.toLong, D2L)
addPrimitives(DoubleClass, nme.toFloat, D2F)
addPrimitives(DoubleClass, nme.toDouble, D2D)
// unary methods
addPrimitives(DoubleClass, nme.UNARY_+, POS)
addPrimitives(DoubleClass, nme.UNARY_-, NEG)
primitives.toMap
}
def isPrimitive(sym: Symbol): Boolean = primitives contains sym
}
|