48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
package addrs
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import (
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"fmt"
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)
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// instanceKey represents the key of an instance within an object that
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// contains multiple instances due to using "count" or "for_each" arguments
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// in configuration.
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//
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// intKey and stringKey are the two implementations of this type. No other
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// implementations are allowed. The single instance of an object that _isn't_
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// using "count" or "for_each" is represented by NoKey, which is a nil
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// InstanceKey.
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type instanceKey interface {
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instanceKeySigil()
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String() string
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}
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// NoKey represents the absense of an instanceKey, for the single instance
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// of a configuration object that does not use "count" or "for_each" at all.
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var NoKey instanceKey
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// intKey is the InstanceKey representation representing integer indices, as
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// used when the "count" argument is specified or if for_each is used with
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// a sequence type.
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type intKey int
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func (k intKey) instanceKeySigil() {
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}
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func (k intKey) String() string {
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return fmt.Sprintf("[%d]", int(k))
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}
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// stringKey is the InstanceKey representation representing string indices, as
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// used when the "for_each" argument is specified with a map or object type.
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type stringKey string
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func (k stringKey) instanceKeySigil() {
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}
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func (k stringKey) String() string {
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// FIXME: This isn't _quite_ right because Go's quoted string syntax is
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// slightly different than HCL's, but we'll accept it for now.
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return fmt.Sprintf("[%q]", string(k))
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}
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