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https://github.com/hanzoai/yaegi.git
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zeekay
a6a6264f91
Per the standing fork rule, a hanzoai fork declares its OWN module path and
is required directly -- never resolved via a `replace` against the upstream
path. Keeping the upstream path meant every import line in every consumer
carried the upstream brand.
module github.com/traefik/yaegi -> module github.com/hanzoai/yaegi
Mechanical and behaviour-neutral: every occurrence is an import path
(package self-imports, cmd/, _test/ fixtures interpreted at test time, and
the guthib.com/<org>/{fromage,cheese,vin} fake vendor trees under
example/pkg, whose directory components were renamed in lockstep with the
import strings that reference them).
GOPATH-mode source-import tests (interp TestFile) resolve the module by its
path under $GOPATH/src, so the required checkout location moves with the
module path -- as README already documents. Verified green at
$GOPATH/src/github.com/hanzoai/yaegi.
LICENSE is untouched: "Copyright 2020 Traefik Labs SAS" is the Apache-2.0
attribution and is a legal obligation, not a brand leak.
Also drops the inherited CONTRIBUTING.md CLA clause, which named an
upstream agreement this fork does not administer.
71 lines
2.1 KiB
Go
71 lines
2.1 KiB
Go
// Package unsafe provides wrapper of standard library unsafe package to be imported natively in Yaegi.
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package unsafe
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import (
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"reflect"
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"unsafe"
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)
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// Symbols stores the map of unsafe package symbols.
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var Symbols = map[string]map[string]reflect.Value{}
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func init() {
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Symbols["github.com/hanzoai/yaegi/stdlib/unsafe/unsafe"] = map[string]reflect.Value{
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"Symbols": reflect.ValueOf(Symbols),
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}
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Symbols["github.com/hanzoai/yaegi/yaegi"] = map[string]reflect.Value{
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"convert": reflect.ValueOf(convert),
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}
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Symbols["unsafe/unsafe"]["Add"] = reflect.ValueOf(add)
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// Add builtin functions to unsafe, also implemented in interp/cfg.go.
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Symbols["unsafe/unsafe"]["Sizeof"] = reflect.ValueOf(sizeof)
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Symbols["unsafe/unsafe"]["Alignof"] = reflect.ValueOf(alignof)
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// The following is used for signature check only.
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Symbols["unsafe/unsafe"]["Offsetof"] = reflect.ValueOf(func(interface{}) uintptr { return 0 })
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}
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func convert(from, to reflect.Type) func(src, dest reflect.Value) {
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switch {
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case to.Kind() == reflect.UnsafePointer && from.Kind() == reflect.Uintptr:
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return uintptrToUnsafePtr
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case to.Kind() == reflect.UnsafePointer:
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return func(src, dest reflect.Value) {
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dest.SetPointer(unsafe.Pointer(src.Pointer()))
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}
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case to.Kind() == reflect.Uintptr && from.Kind() == reflect.UnsafePointer:
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return func(src, dest reflect.Value) {
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ptr := src.Interface().(unsafe.Pointer)
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dest.Set(reflect.ValueOf(uintptr(ptr)))
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}
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case from.Kind() == reflect.UnsafePointer:
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return func(src, dest reflect.Value) {
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ptr := src.Interface().(unsafe.Pointer)
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v := reflect.NewAt(dest.Type().Elem(), ptr)
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dest.Set(v)
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}
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default:
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return nil
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}
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}
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func add(ptr unsafe.Pointer, l int) unsafe.Pointer {
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return unsafe.Add(ptr, l)
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}
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func sizeof(i interface{}) uintptr {
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return reflect.ValueOf(i).Type().Size()
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}
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func alignof(i interface{}) uintptr {
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return uintptr(reflect.ValueOf(i).Type().Align())
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}
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//go:nocheckptr
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func uintptrToUnsafePtr(src, dest reflect.Value) {
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dest.SetPointer(unsafe.Pointer(src.Interface().(uintptr))) //nolint:govet
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}
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//go:generate ../../internal/cmd/extract/extract unsafe
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