|
| 1 | +import typing |
| 2 | +import re |
| 3 | +from JAbs import SelectedJVMInitializer, ClassPathT, ClassesImportSpecT |
| 4 | +from collections import OrderedDict, defaultdict |
| 5 | +import warnings |
| 6 | + |
| 7 | +import sys |
| 8 | + |
| 9 | +decodeScalaSignature = None |
| 10 | + |
| 11 | +class _ScalaMutableWrapper: |
| 12 | + __slots__ = ("_ctor", "_data") |
| 13 | + |
| 14 | + def __init__(self, ji, o, template=None, ctor=None, data=None): |
| 15 | + if ctor is None: |
| 16 | + if isinstance(o, __class__): |
| 17 | + ctor = o._ctor |
| 18 | + else: |
| 19 | + ctor = o.__class__ |
| 20 | + |
| 21 | + self.__class__._ctor.__set__(self, ctor) |
| 22 | + |
| 23 | + if data is None: |
| 24 | + if template: |
| 25 | + data = type(template)(template) |
| 26 | + else: |
| 27 | + data = ji.getSomeKindOfImmutableObjectTemplate(ctor) |
| 28 | + |
| 29 | + for p in data.keys(): |
| 30 | + v = getattr(o, p)() |
| 31 | + data[p] = ji.scalaWrapSomeKindOfImmutableObject(v) |
| 32 | + |
| 33 | + self.__class__._data.__set__(self, data) |
| 34 | + |
| 35 | + def _revertIter_(self): |
| 36 | + for v in self._revertIter(): |
| 37 | + if isinstance(v, __class__): |
| 38 | + v = v._revert() |
| 39 | + yield v |
| 40 | + |
| 41 | + def _revert(self): |
| 42 | + return self._ctor(list(self._revertIter())) |
| 43 | + |
| 44 | + def __repr__(self): |
| 45 | + return self.__class__.__name__ + "<" + self._ctor.__name__ + ">(" + repr(self._data) + ")" |
| 46 | + |
| 47 | + def merge(self, other, mergingFunction = None): |
| 48 | + if mergingFunction is None: |
| 49 | + mergingFunction = _defaultMergingFunction |
| 50 | + |
| 51 | + for k in self._data.keys(): |
| 52 | + v = self._data[k] |
| 53 | + ov = other._data[k] |
| 54 | + if isinstance(v, _ScalaMutableWrapper): |
| 55 | + v.merge(ov, mergingFunction) |
| 56 | + else: |
| 57 | + if mergingFunction(self._ctor, self._data, k, v, ov): |
| 58 | + pass |
| 59 | + else: |
| 60 | + if ov is not None: |
| 61 | + self._data[k] = ov |
| 62 | + |
| 63 | + |
| 64 | +def _defaultMergingFunction(objScalaClass, dataDict, k, v, ov) -> bool: |
| 65 | + return False |
| 66 | + |
| 67 | + |
| 68 | +class ScalaMutableWrapper(_ScalaMutableWrapper): |
| 69 | + __slots__ = () |
| 70 | + |
| 71 | + def _revertIter(self): |
| 72 | + return self._data.values() |
| 73 | + |
| 74 | + def _revert(self): |
| 75 | + return self._ctor(*tuple(self._revertIter_())) |
| 76 | + |
| 77 | + def __getattr__(self, k): |
| 78 | + return self._data[k] |
| 79 | + |
| 80 | + def __setattr__(self, k, v): |
| 81 | + self._data[k] = v |
| 82 | + |
| 83 | + def __dir__(self): |
| 84 | + return self._data.keys() |
| 85 | + |
| 86 | + #def merge(self, other, mergingFunction = None): |
| 87 | + # raise NotImplementedError |
| 88 | + |
| 89 | + |
| 90 | +class ScalaCollectionMutableWrapper(_ScalaMutableWrapper): |
| 91 | + __slots__ = () |
| 92 | + |
| 93 | + def __init__(self, ji, o, template=None, ctor=None, data=None): |
| 94 | + super().__init__(ji, o, ctor=ji.scalaSeq, data=[ji.scalaWrapSomeKindOfImmutableObject(el) for el in ji.JavaConverters.asJavaCollection(o)]) |
| 95 | + |
| 96 | + def __getitem__(self, k): |
| 97 | + return self._data[k] |
| 98 | + |
| 99 | + def __setitem__(self, k, v): |
| 100 | + self._data[k] = v |
| 101 | + |
| 102 | + def __getattr__(self, k): |
| 103 | + return getattr(self._data, k) |
| 104 | + |
| 105 | + def __setattr__(self, k, v): |
| 106 | + setattr(self._data, k, v) |
| 107 | + |
| 108 | + def _revertIter(self): |
| 109 | + return self._data |
| 110 | + |
| 111 | + def _revert(self): |
| 112 | + return self._ctor(list(self._revertIter_())) |
| 113 | + |
| 114 | + def merge(self, other, mergingFunction = None): |
| 115 | + self.extend(other) |
| 116 | + |
| 117 | + |
| 118 | + |
| 119 | +class ScalaJVMInitializer: |
| 120 | + __slots__ = ("ji", "scalaVersion") |
| 121 | + def __init__(self, classPathz: ClassPathT, classes2import: ClassesImportSpecT) -> None: |
| 122 | + self.__class__.ji.__set__(self, SelectedJVMInitializer(classPathz, classes2import)) |
| 123 | + self.loadScala() |
| 124 | + |
| 125 | + def __getattr__(self, k): |
| 126 | + return getattr(self.ji, k) |
| 127 | + |
| 128 | + def __setattr__(self, k, v): |
| 129 | + setattr(self.ji, k, v) |
| 130 | + |
| 131 | + def loadScala(self) -> None: |
| 132 | + self.ji.ImmutArraySeq = None |
| 133 | + self.loadClasses(( |
| 134 | + ("scala.util.Properties", "ScalaProps"), |
| 135 | + "scala.concurrent.Await", |
| 136 | + "scala.collection.Iterable", |
| 137 | + "scala.collection.mutable.Seq", |
| 138 | + "scala.collection.mutable.ListBuffer", |
| 139 | + ("scala.collection.mutable.ArraySeq", "MutArraySeq"), |
| 140 | + ("scala.collection.immutable.HashMap", "ImmutHashMap"), |
| 141 | + ("scala.collection.mutable.HashMap", "MutHashMap"), |
| 142 | + "scala.collection.JavaConverters", |
| 143 | + "scala.Some", |
| 144 | + ("scala.None", "none"), |
| 145 | + ("scala.Predef$", "scalaPredef"), |
| 146 | + ("scala.collection.Seq$", "scalaCollSeq"), |
| 147 | + "java.util.Arrays" |
| 148 | + )) |
| 149 | + |
| 150 | + self.scalaVersion = tuple(int(el) for el in str(self.ScalaProps.versionNumberString()).split(".")) |
| 151 | + |
| 152 | + if self.scalaVersion > (2, 13): |
| 153 | + self.loadClasses( |
| 154 | + ("scala.collection.immmutable.ArraySeq", "ImmutArraySeq") |
| 155 | + ) |
| 156 | + else: |
| 157 | + warnings.warn("Using mutable ArraySeq instead of immutable one, since immutable is not present in this version of Scala " + repr(self.scalaVersion)) |
| 158 | + |
| 159 | + self.scalaPredef = getattr(self.scalaPredef, "MODULE$") |
| 160 | + self.scalaCollSeq = getattr(self.scalaCollSeq, "MODULE$") |
| 161 | + |
| 162 | + def getScalaSignatureAnnotation(self, scalaClass) -> typing.Any: |
| 163 | + return self.__class__.getScalaSignatureAnnotationFromReflectedClass(self.reflectClass(scalaClass)) |
| 164 | + |
| 165 | + @classmethod |
| 166 | + def getScalaSignatureAnnotationFromReflectedClass(cls, classRefl) -> typing.Any: |
| 167 | + for annot in classRefl.annotations: |
| 168 | + if annot.annotationType().name == "scala.reflect.ScalaSignature": |
| 169 | + return annot |
| 170 | + return None |
| 171 | + |
| 172 | + def _ensureScalaSignatureBytesDecoderLazyLoaded(self): |
| 173 | + global decodeScalaSignature |
| 174 | + if decodeScalaSignature is None: |
| 175 | + try: |
| 176 | + from .scalaTransformArray import decode as decodeScalaSignaturePython |
| 177 | + |
| 178 | + def decodeScalaSignature(s: bytes) -> bytes: |
| 179 | + s = bytearray(bytes(s)) |
| 180 | + l = decodeScalaSignaturePython(s) |
| 181 | + return bytes(s[:l]) |
| 182 | + |
| 183 | + |
| 184 | + except ImportError: |
| 185 | + ByteCodecs = ji.loadClass("scala.reflect.internal.pickling.ByteCodecs") |
| 186 | + |
| 187 | + def decodeScalaSignature(s: bytes) -> bytes: |
| 188 | + l = ByteCodecs.decode(s) |
| 189 | + s = bytes(s) |
| 190 | + return s[:l] |
| 191 | + |
| 192 | + def getScalaSignatureAnnotationBytes(self) -> bytes: |
| 193 | + self._ensureScalaSignatureBytesDecoderLazyLoaded() |
| 194 | + scalaSignAnnot = self.getScalaSignatureAnnotation(classRefl) |
| 195 | + if scalaSignAnnot: |
| 196 | + s = scalaSignAnnot.bytes().getBytes("UTF-8") |
| 197 | + return decodeScalaSignature(s) |
| 198 | + |
| 199 | + def scalaMap(self, m, mutable=False): |
| 200 | + if mutable: |
| 201 | + ctor = self.MutHashMap |
| 202 | + else: |
| 203 | + ctor = self.ImmutHashMap |
| 204 | + |
| 205 | + seq = ctor(len(m)) |
| 206 | + for k, v in m.items(): |
| 207 | + seq.update(k, v) |
| 208 | + return seq |
| 209 | + |
| 210 | + def scalaArrSeq(self, it, mutable=True): |
| 211 | + it = list(it) |
| 212 | + if mutable or self.ImmutArraySeq is None: |
| 213 | + ctor = self.MutArraySeq |
| 214 | + else: |
| 215 | + ctor = self.ImmutArraySeq |
| 216 | + |
| 217 | + seq = ctor(len(it)) |
| 218 | + for k, v in enumerate(it): |
| 219 | + seq.update(k, v) |
| 220 | + return seq |
| 221 | + |
| 222 | + def scalaSet(self, it, mutable=True): |
| 223 | + return self.scalaArrSeq(it, mutable=mutable).toSet() |
| 224 | + |
| 225 | + def scalaSeq(self, it): |
| 226 | + coll = self.scalaCollSeq.apply(self.scalaPredef.wrapRefArray(list(it))) |
| 227 | + coll = coll.to(self.scalaCollSeq.canBuildFrom()) |
| 228 | + return coll |
| 229 | + #return self.scalaCollSeq.apply(self.scalaPredef.wrapRefArray(list(it))) |
| 230 | + #return self.scalaPredef.wrapRefArray(list(it)) |
| 231 | + #return self.JavaConverters.collectionAsScalaIterable(self.Arrays.asList(list(it))).toSeq() |
| 232 | + |
| 233 | + scalaTupleRx = re.compile("^_(\\d+)$") |
| 234 | + |
| 235 | + @classmethod |
| 236 | + def scalaDetuple(cls, t): |
| 237 | + res = [None] * t.productArity() |
| 238 | + for n in dir(t): |
| 239 | + m = cls.scalaTupleRx.match(n) |
| 240 | + if m is not None: |
| 241 | + res[int(m.group(1)) - 1] = getattr(t, n)() |
| 242 | + return tuple(res) |
| 243 | + |
| 244 | + @classmethod |
| 245 | + def scalaDeOption(cls, o): |
| 246 | + if o.isEmpty(): |
| 247 | + return None |
| 248 | + |
| 249 | + return o.value() |
| 250 | + |
| 251 | + @staticmethod |
| 252 | + def getSomeKindOfImmutableObjectTemplate(cls): |
| 253 | + c = max(cls.class_.getConstructors(), key=lambda ct: len(ct.getParameters())) |
| 254 | + return OrderedDict([(str(p.getName()), None) for p in c.getParameters()]) |
| 255 | + |
| 256 | + def scalaWrapSomeKindOfImmutableObject(self, o, template=None): |
| 257 | + if not isinstance(o, (str, self.String, int, float, bool, type(None), ScalaMutableWrapper, ScalaCollectionMutableWrapper)): |
| 258 | + #print(o.__class__, isinstance(o, self.Iterable), o.__class__.__mro__) |
| 259 | + if isinstance(o, self.Iterable): |
| 260 | + return ScalaCollectionMutableWrapper(self, o) |
| 261 | + else: |
| 262 | + if hasattr(o, "copy$default$1"): |
| 263 | + o = ScalaMutableWrapper(self, o) |
| 264 | + return o |
| 265 | + else: |
| 266 | + return o |
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