38 lines
1015 B
Java
38 lines
1015 B
Java
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package javax.annotation;
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import java.lang.annotation.Documented;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.util.regex.Pattern;
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import javax.annotation.meta.TypeQualifier;
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import javax.annotation.meta.TypeQualifierValidator;
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import javax.annotation.meta.When;
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/**
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* This annotation is used to denote String values that should always match
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* given pattern.
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* <p>
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* When this annotation is applied to a method it applies to the method return
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* value.
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*/
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@Documented
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@TypeQualifier(applicableTo = String.class)
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@Retention(RetentionPolicy.RUNTIME)
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public @interface MatchesPattern {
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@RegEx
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String value();
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int flags() default 0;
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static class Checker implements TypeQualifierValidator<MatchesPattern> {
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public When forConstantValue(MatchesPattern annotation, Object value) {
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Pattern p = Pattern.compile(annotation.value(), annotation.flags());
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if (p.matcher(((String) value)).matches())
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return When.ALWAYS;
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return When.NEVER;
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}
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}
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}
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