58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
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package container
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import (
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"reflect"
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"github.com/goccy/go-graphviz/cgraph"
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)
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type scopeDepProvider struct {
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provider *ProviderDescriptor
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calledForScope map[Scope]bool
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valueMap map[Scope][]reflect.Value
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}
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type scopeDepResolver struct {
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typ reflect.Type
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idxInValues int
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node *scopeDepProvider
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valueMap map[Scope]reflect.Value
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graphNode *cgraph.Node
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}
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func (s scopeDepResolver) describeLocation() string {
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return s.node.provider.Location.String()
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}
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func (s scopeDepResolver) resolve(ctr *container, scope Scope, caller Location) (reflect.Value, error) {
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// Log
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ctr.logf("Providing %v from %s to %s", s.typ, s.node.provider.Location, caller.Name())
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// Resolve
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if val, ok := s.valueMap[scope]; ok {
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return val, nil
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}
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if !s.node.calledForScope[scope] {
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values, err := ctr.call(s.node.provider, scope)
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if err != nil {
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return reflect.Value{}, err
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}
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s.node.valueMap[scope] = values
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s.node.calledForScope[scope] = true
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}
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value := s.node.valueMap[scope][s.idxInValues]
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s.valueMap[scope] = value
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return value, nil
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}
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func (s scopeDepResolver) addNode(p *simpleProvider, _ int) error {
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return duplicateDefinitionError(s.typ, p.provider.Location, s.node.provider.Location.String())
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}
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func (s scopeDepResolver) typeGraphNode() *cgraph.Node {
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return s.graphNode
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}
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