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61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package expressions
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import (
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"errors"
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"maps"
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"reflect"
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"slices"
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"github.com/google/cel-go/common/types"
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"github.com/google/cel-go/common/types/ref"
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"github.com/google/cel-go/common/types/traits"
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)
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var ErrNotImplemented = errors.New("expressions: not implemented")
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type stringSliceIterator struct {
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keys []string
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idx int
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}
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func (s *stringSliceIterator) Value() any {
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return s
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}
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func (s *stringSliceIterator) ConvertToNative(typeDesc reflect.Type) (any, error) {
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return nil, ErrNotImplemented
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}
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func (s *stringSliceIterator) ConvertToType(typeValue ref.Type) ref.Val {
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return types.NewErr("can't convert from %q to %q", types.IteratorType, typeValue)
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}
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func (s *stringSliceIterator) Equal(other ref.Val) ref.Val {
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return types.NewErr("can't compare %q to %q", types.IteratorType, other.Type())
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}
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func (s *stringSliceIterator) Type() ref.Type {
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return types.IteratorType
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}
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func (s *stringSliceIterator) HasNext() ref.Val {
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return types.Bool(s.idx < len(s.keys))
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}
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func (s *stringSliceIterator) Next() ref.Val {
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if s.HasNext() != types.True {
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return nil
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}
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val := s.keys[s.idx]
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s.idx++
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return types.String(val)
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}
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func newMapIterator(m map[string][]string) traits.Iterator {
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return &stringSliceIterator{
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keys: slices.Collect(maps.Keys(m)),
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idx: 0,
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}
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}
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