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Add Party.Container.SetDependencyMatcher, hero.Container.DependencyMatcher and hero.Dependency.Match to fullfil the feature request asked at: #1842

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Gerasimos (Makis) Maropoulos
2022-03-01 21:26:02 +02:00
parent 5ce8475f35
commit 61872a1612
9 changed files with 79 additions and 30 deletions
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21
hero/binding.go
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@@ -110,7 +110,12 @@ func (b *binding) Equal(other *binding) bool {
return true
}
func matchDependency(dep *Dependency, in reflect.Type) bool {
// DependencyMatcher type alias describes a dependency match function.
type DependencyMatcher = func(*Dependency, reflect.Type) bool
// DefaultDependencyMatcher is the default dependency match function for all DI containers.
// It is used to collect dependencies from struct's fields and function's parameters.
var DefaultDependencyMatcher = func(dep *Dependency, in reflect.Type) bool {
if dep.Explicit {
return dep.DestType == in
}
@@ -118,6 +123,14 @@ func matchDependency(dep *Dependency, in reflect.Type) bool {
return dep.DestType == nil || equalTypes(dep.DestType, in)
}
// ToDependencyMatchFunc converts a DependencyMatcher (generic for all dependencies)
// to a dependency-specific input matcher.
func ToDependencyMatchFunc(d *Dependency, match DependencyMatcher) DependencyMatchFunc {
return func(in reflect.Type) bool {
return match(d, in)
}
}
func getBindingsFor(inputs []reflect.Type, deps []*Dependency, disablePayloadAutoBinding bool, paramsCount int) (bindings []*binding) {
// Path parameter start index is the result of [total path parameters] - [total func path parameters inputs],
// moving from last to first path parameters and first to last (probably) available input args.
@@ -174,7 +187,7 @@ func getBindingsFor(inputs []reflect.Type, deps []*Dependency, disablePayloadAut
continue
}
match := matchDependency(d, in)
match := d.Match(in)
if !match {
continue
}
@@ -278,7 +291,7 @@ func getBindingsForFunc(fn reflect.Value, dependencies []*Dependency, disablePay
return bindings
}
func getBindingsForStruct(v reflect.Value, dependencies []*Dependency, markExportedFieldsAsRequired bool, disablePayloadAutoBinding bool, paramsCount int, sorter Sorter) (bindings []*binding) {
func getBindingsForStruct(v reflect.Value, dependencies []*Dependency, markExportedFieldsAsRequired bool, disablePayloadAutoBinding bool, matchDependency DependencyMatcher, paramsCount int, sorter Sorter) (bindings []*binding) {
typ := indirectType(v.Type())
if typ.Kind() != reflect.Struct {
panic("bindings: unresolved: no struct type")
@@ -290,7 +303,7 @@ func getBindingsForStruct(v reflect.Value, dependencies []*Dependency, markExpor
for _, f := range nonZero {
// fmt.Printf("Controller [%s] | NonZero | Field Index: %v | Field Type: %s\n", typ, f.Index, f.Type)
bindings = append(bindings, &binding{
Dependency: newDependency(elem.FieldByIndex(f.Index).Interface(), disablePayloadAutoBinding),
Dependency: newDependency(elem.FieldByIndex(f.Index).Interface(), disablePayloadAutoBinding, nil),
Input: newStructFieldInput(f),
})
}