github.com/pygolin/runtime@v0.0.0-20201208210830-a62e3cd39798/baseexception.go (about) 1 // Copyright 2016 Google Inc. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package runtime 16 17 import ( 18 "reflect" 19 ) 20 21 // BaseException represents Python 'BaseException' objects. 22 type BaseException struct { 23 Object 24 args *Tuple 25 } 26 27 func toBaseExceptionUnsafe(o *Object) *BaseException { 28 return (*BaseException)(o.toPointer()) 29 } 30 31 // ToObject upcasts e to an Object. 32 func (e *BaseException) ToObject() *Object { 33 return &e.Object 34 } 35 36 // BaseExceptionType corresponds to the Python type 'BaseException'. 37 var BaseExceptionType = newBasisType("BaseException", reflect.TypeOf(BaseException{}), toBaseExceptionUnsafe, ObjectType) 38 39 func baseExceptionInit(f *Frame, o *Object, args Args, kwargs KWArgs) (*Object, *BaseException) { 40 e := toBaseExceptionUnsafe(o) 41 e.args = NewTuple(args.makeCopy()...) 42 return None, nil 43 } 44 45 func baseExceptionRepr(f *Frame, o *Object) (*Object, *BaseException) { 46 e := toBaseExceptionUnsafe(o) 47 argsString := "()" 48 if e.args != nil { 49 s, raised := Repr(f, e.args.ToObject()) 50 if raised != nil { 51 return nil, raised 52 } 53 argsString = s.Value() 54 } 55 return NewStr(e.typ.Name() + argsString).ToObject(), nil 56 } 57 58 func baseExceptionStr(f *Frame, o *Object) (*Object, *BaseException) { 59 e := toBaseExceptionUnsafe(o) 60 if e.args == nil || len(e.args.elems) == 0 { 61 return NewStr("").ToObject(), nil 62 } 63 if len(e.args.elems) == 1 { 64 s, raised := ToStr(f, e.args.elems[0]) 65 return s.ToObject(), raised 66 } 67 s, raised := ToStr(f, e.args.ToObject()) 68 return s.ToObject(), raised 69 } 70 71 func initBaseExceptionType(map[string]*Object) { 72 BaseExceptionType.slots.Init = &initSlot{baseExceptionInit} 73 BaseExceptionType.slots.Repr = &unaryOpSlot{baseExceptionRepr} 74 BaseExceptionType.slots.Str = &unaryOpSlot{baseExceptionStr} 75 }