Pat Garrity
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41 lines
1.1 KiB
Scala
41 lines
1.1 KiB
Scala
package gs.config.v0
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/** Defines some piece of configuration.
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*
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* See:
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*
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* - [[ConfigKey.Required]]
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* - [[ConfigKey.WithDefaultValue]]
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*
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* @tparam A
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* The type of data referenced by this key. This type must be
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* [[Configurable]].
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*/
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sealed trait ConfigKey[A: Configurable]:
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def name: ConfigName
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object ConfigKey:
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/** Defines a piece of configuration that is required and does not have any
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* default value. If the value referenced by the name cannot be found, an
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* [[ConfigError.MissingValue]] is returned.
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*
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* @param name
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* The name of this configuration.
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*/
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case class Required[A: Configurable](
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name: ConfigName
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) extends ConfigKey[A]
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/** Defines a piece of configuration that has a default value. If the value
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* referenced by the name cannot be found, the default is used.
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*
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* @param name
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* The name of this piece of configuration.
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* @param defaultValue
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* The default value for this configuration.
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*/
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case class WithDefaultValue[A: Configurable](
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name: ConfigName,
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defaultValue: () => A
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) extends ConfigKey[A]
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