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Add parameter value provider support

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Adds support for parameter value providers which makes it
possible to set custom values for parameters.
This commit is contained in:
Patrik Svensson
2021-05-08 07:42:28 +02:00
committed by Phil Scott
parent d1d94cdebe
commit 1dd1945297
14 changed files with 208 additions and 27 deletions
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26
src/Spectre.Console/Cli/Internal/Binding/CommandValueResolver.cs
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@ -18,6 +18,18 @@ namespace Spectre.Console.Cli
// Process unmapped parameters.
foreach (var parameter in tree.Unmapped)
{
// Got a value provider?
if (parameter.ValueProvider != null)
{
var context = new CommandParameterContext(parameter, resolver, null);
if (parameter.ValueProvider.TryGetValue(context, out var result))
{
lookup.SetValue(parameter, result);
CommandValidator.ValidateParameter(parameter, lookup, resolver);
continue;
}
}
if (parameter.IsFlagValue())
{
// Set the flag value to an empty, not set instance.
@ -42,7 +54,7 @@ namespace Spectre.Console.Cli
}
binder.Bind(parameter, resolver, value);
CommandValidator.ValidateParameter(parameter, lookup);
CommandValidator.ValidateParameter(parameter, lookup, resolver);
}
else if (Nullable.GetUnderlyingType(parameter.ParameterType) != null ||
!parameter.ParameterType.IsValueType)
@ -88,7 +100,17 @@ namespace Spectre.Console.Cli
}
}
CommandValidator.ValidateParameter(mapped.Parameter, lookup);
// Got a value provider?
if (mapped.Parameter.ValueProvider != null)
{
var context = new CommandParameterContext(mapped.Parameter, resolver, mapped.Value);
if (mapped.Parameter.ValueProvider.TryGetValue(context, out var result))
{
lookup.SetValue(mapped.Parameter, result);
}
}
CommandValidator.ValidateParameter(mapped.Parameter, lookup, resolver);
}
tree = tree.Next;