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Support for validation of Duration and URI default values. (#9166)
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91
codegen/codegen/src/main/java/io/helidon/codegen/CodegenValidator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| /* | ||
| * Copyright (c) 2024 Oracle and/or its affiliates. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package io.helidon.codegen; | ||
|
|
||
| import java.net.URI; | ||
| import java.time.Duration; | ||
|
|
||
| import io.helidon.common.types.TypeName; | ||
| import io.helidon.common.types.TypedElementInfo; | ||
|
|
||
| /** | ||
| * Validation utilities. | ||
| */ | ||
| public final class CodegenValidator { | ||
| private CodegenValidator() { | ||
| } | ||
|
|
||
| /** | ||
| * Validate a URI value in an annotation. | ||
| * | ||
| * @param enclosingType type that owns the element | ||
| * @param element annotated element | ||
| * @param annotationType type of annotation | ||
| * @param property property of annotation | ||
| * @param value actual value read from the annotation property | ||
| * @return the value | ||
| * @throws io.helidon.codegen.CodegenException with correct source element describing the problem | ||
| */ | ||
| public static String validateUri(TypeName enclosingType, | ||
| TypedElementInfo element, | ||
| TypeName annotationType, | ||
| String property, | ||
| String value) { | ||
| try { | ||
| URI.create(value); | ||
| return value; | ||
| } catch (Exception e) { | ||
| throw new CodegenException("URI expression of annotation " + annotationType.fqName() + "." | ||
| + property + "(): " | ||
| + "\"" + value + "\" cannot be parsed. Invalid URI.", | ||
| e, | ||
| element.originatingElement().orElseGet(() -> enclosingType.fqName() + "." | ||
| + element.elementName())); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Validate a duration annotation on a method, field, or constructor. | ||
| * | ||
| * @param enclosingType type that owns the element | ||
| * @param element annotated element | ||
| * @param annotationType type of annotation | ||
| * @param property property of annotation | ||
| * @param value actual value read from the annotation property | ||
| * @return the value | ||
| * @throws io.helidon.codegen.CodegenException with correct source element describing the problem | ||
| */ | ||
| public static String validateDuration(TypeName enclosingType, | ||
| TypedElementInfo element, | ||
| TypeName annotationType, | ||
| String property, | ||
| String value) { | ||
| try { | ||
| Duration.parse(value); | ||
| return value; | ||
| } catch (Exception e) { | ||
| throw new CodegenException("Duration expression of annotation " + annotationType.fqName() + "." | ||
| + property + "(): " | ||
| + "\"" + value + "\" cannot be parsed. Duration expects an" | ||
| + " expression such as 'PT1S' (1 second), 'PT0.1S' (tenth of a second)." | ||
| + " Please check javadoc of " + Duration.class.getName() + " class.", | ||
| e, | ||
| element.originatingElement().orElseGet(() -> enclosingType.fqName() + "." | ||
| + element.elementName())); | ||
| } | ||
| } | ||
| } |
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