diff options
Diffstat (limited to 'vendor/github.com/modern-go')
| -rw-r--r-- | vendor/github.com/modern-go/reflect2/type_map.go | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/vendor/github.com/modern-go/reflect2/type_map.go b/vendor/github.com/modern-go/reflect2/type_map.go index 6d489112f..3acfb5580 100644 --- a/vendor/github.com/modern-go/reflect2/type_map.go +++ b/vendor/github.com/modern-go/reflect2/type_map.go @@ -4,6 +4,7 @@ import ( "reflect" "runtime" "strings" + "sync" "unsafe" ) @@ -15,10 +16,17 @@ func typelinks1() [][]unsafe.Pointer //go:linkname typelinks2 reflect.typelinks func typelinks2() (sections []unsafe.Pointer, offset [][]int32) -var types = map[string]reflect.Type{} -var packages = map[string]map[string]reflect.Type{} +// initOnce guards initialization of types and packages +var initOnce sync.Once + +var types map[string]reflect.Type +var packages map[string]map[string]reflect.Type + +// discoverTypes initializes types and packages +func discoverTypes() { + types = make(map[string]reflect.Type) + packages = make(map[string]map[string]reflect.Type) -func init() { ver := runtime.Version() if ver == "go1.5" || strings.HasPrefix(ver, "go1.5.") { loadGo15Types() @@ -90,11 +98,13 @@ type emptyInterface struct { // TypeByName return the type by its name, just like Class.forName in java func TypeByName(typeName string) Type { + initOnce.Do(discoverTypes) return Type2(types[typeName]) } // TypeByPackageName return the type by its package and name func TypeByPackageName(pkgPath string, name string) Type { + initOnce.Do(discoverTypes) pkgTypes := packages[pkgPath] if pkgTypes == nil { return nil |