public static CommandValueLookup GetParameterValues(CommandTree?tree, ITypeResolver resolver) { var lookup = new CommandValueLookup(); var binder = new CommandValueBinder(lookup); CommandValidator.ValidateRequiredParameters(tree); while (tree != null) { // Process unmapped parameters. foreach (var parameter in tree.Unmapped) { if (parameter.IsFlagValue()) { // Set the flag value to an empty, not set instance. var instance = Activator.CreateInstance(parameter.ParameterType); lookup.SetValue(parameter, instance); } else { // Is this an option with a default value? if (parameter.DefaultValue != null) { var value = parameter.DefaultValue?.Value; // Need to convert the default value? if (value != null && value.GetType() != parameter.ParameterType) { var converter = GetConverter(lookup, binder, resolver, parameter); if (converter != null) { value = converter.ConvertFrom(value); } } binder.Bind(parameter, resolver, value); CommandValidator.ValidateParameter(parameter, lookup); } else if (Nullable.GetUnderlyingType(parameter.ParameterType) != null || !parameter.ParameterType.IsValueType) { lookup.SetValue(parameter, null); } } } // Process mapped parameters. foreach (var mapped in tree.Mapped) { if (mapped.Parameter.WantRawValue) { // Just try to assign the raw value. binder.Bind(mapped.Parameter, resolver, mapped.Value); } else { var converter = GetConverter(lookup, binder, resolver, mapped.Parameter); if (converter == null) { throw CommandRuntimeException.NoConverterFound(mapped.Parameter); } if (mapped.Parameter.IsFlagValue() && mapped.Value == null) { if (mapped.Parameter is CommandOption option && option.DefaultValue != null) { // Set the default value. binder.Bind(mapped.Parameter, resolver, option.DefaultValue?.Value); } else { // Set the flag but not the value. binder.Bind(mapped.Parameter, resolver, null); } }
public static CommandValueLookup GetParameterValues(CommandTree?tree, ITypeResolver resolver) { var lookup = new CommandValueLookup(); var binder = new CommandValueBinder(lookup); CommandValidator.ValidateRequiredParameters(tree); while (tree != null) { // 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)) { result = ConvertValue(resolver, lookup, binder, parameter, result); lookup.SetValue(parameter, result); CommandValidator.ValidateParameter(parameter, lookup, resolver); continue; } } if (parameter.IsFlagValue()) { // Set the flag value to an empty, not set instance. var instance = Activator.CreateInstance(parameter.ParameterType); lookup.SetValue(parameter, instance); } else { // Is this an option with a default value? if (parameter.DefaultValue != null) { var value = parameter.DefaultValue?.Value; value = ConvertValue(resolver, lookup, binder, parameter, value); binder.Bind(parameter, resolver, value); CommandValidator.ValidateParameter(parameter, lookup, resolver); } else if (Nullable.GetUnderlyingType(parameter.ParameterType) != null || !parameter.ParameterType.IsValueType) { lookup.SetValue(parameter, null); } } } // Process mapped parameters. foreach (var mapped in tree.Mapped) { if (mapped.Parameter.WantRawValue) { // Just try to assign the raw value. binder.Bind(mapped.Parameter, resolver, mapped.Value); } else { if (mapped.Parameter.IsFlagValue() && mapped.Value == null) { if (mapped.Parameter is CommandOption option && option.DefaultValue != null) { // Set the default value. binder.Bind(mapped.Parameter, resolver, option.DefaultValue?.Value); } else { // Set the flag but not the value. binder.Bind(mapped.Parameter, resolver, null); } }