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package io.dico.dicore.command.annotation;
import io.dico.dicore.command.CommandException;
import io.dico.dicore.command.Validate;
import io.dico.dicore.command.parameter.type.ParameterConfig;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.PARAMETER)
public @interface Range {
Class<?> MEMORY_CLASS = Memory.class;
ParameterConfig<Range, Memory> CONFIG = ParameterConfig.getMemoryClassFromField(Range.class);
Memory DEFAULT = new Memory(-Double.MAX_VALUE, Double.MAX_VALUE, 0);
double min() default -Double.MAX_VALUE;
double max() default Double.MAX_VALUE;
double defaultValue() default 0;
class Memory {
private final double min;
private final double max;
private final double defaultValue;
public Memory(Range range) {
this(range.min(), range.max(), range.defaultValue());
}
public Memory(double min, double max, double defaultValue) {
this.min = min;
this.max = max;
this.defaultValue = defaultValue;
}
public double min() {
return min;
}
public double max() {
return max;
}
public double defaultValue() {
return defaultValue;
}
public void validate(Number x, String failMessage) throws CommandException {
Validate.isTrue(valid(x), failMessage);
}
public boolean valid(Number x) {
double d = x.doubleValue();
return min <= d && d <= max;
}
public boolean isDefault() {
return this == DEFAULT || (min == DEFAULT.min && max == DEFAULT.max && defaultValue == DEFAULT.defaultValue);
}
}
}
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