github.com/grumpyhome/grumpy@v0.3.1-0.20201208125205-7b775405bdf1/grumpy-runtime-src/runtime/traceback.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 grumpy 16 17 import ( 18 "reflect" 19 ) 20 21 // Traceback represents Python 'traceback' objects. 22 type Traceback struct { 23 Object 24 frame *Frame `attr:"tb_frame"` 25 next *Traceback `attr:"tb_next"` 26 lineno int `attr:"tb_lineno"` 27 } 28 29 func newTraceback(f *Frame, next *Traceback) *Traceback { 30 f.taken = true 31 return &Traceback{Object{typ: TracebackType}, f, next, f.lineno} 32 } 33 34 func toTracebackUnsafe(o *Object) *Traceback { 35 return (*Traceback)(o.toPointer()) 36 } 37 38 // ToObject upcasts f to an Object. 39 func (f *Traceback) ToObject() *Object { 40 return &f.Object 41 } 42 43 // TracebackType is the object representing the Python 'traceback' type. 44 var TracebackType = newBasisType("traceback", reflect.TypeOf(Traceback{}), toTracebackUnsafe, ObjectType) 45 46 func initTracebackType(map[string]*Object) { 47 TracebackType.flags &^= typeFlagInstantiable | typeFlagBasetype 48 }