| /* |
| * Copyright 2006 Sascha Weinreuter |
| * |
| * 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 org.intellij.plugins.intelliLang.inject.java; |
| |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.patterns.PatternCondition; |
| import com.intellij.patterns.StandardPatterns; |
| import com.intellij.psi.*; |
| import com.intellij.util.ProcessingContext; |
| import org.intellij.plugins.intelliLang.Configuration; |
| import org.intellij.plugins.intelliLang.util.AnnotationUtilEx; |
| import org.intellij.plugins.intelliLang.util.PsiUtilEx; |
| import org.jetbrains.annotations.NotNull; |
| |
| import static com.intellij.patterns.PsiJavaPatterns.literalExpression; |
| |
| /** |
| * Provides references to Language-IDs and RegExp enums for completion. |
| */ |
| public final class LanguageReferenceProvider extends PsiReferenceContributor { |
| |
| public void registerReferenceProviders(@NotNull PsiReferenceRegistrar registrar) { |
| final Configuration configuration = Configuration.getInstance(); |
| registrar.registerReferenceProvider( |
| literalExpression().annotationParam(StandardPatterns.string().with(new PatternCondition<String>("isLanguageAnnotation") { |
| @Override |
| public boolean accepts(@NotNull final String s, final ProcessingContext context) { |
| return Comparing.equal(configuration.getAdvancedConfiguration().getLanguageAnnotationClass(), s); |
| } |
| }), "value").and(literalExpression().with(new PatternCondition<PsiLiteralExpression>("isStringLiteral") { |
| @Override |
| public boolean accepts(@NotNull final PsiLiteralExpression expression, final ProcessingContext context) { |
| return PsiUtilEx.isStringOrCharacterLiteral(expression); |
| } |
| })), new PsiReferenceProvider() { |
| @NotNull |
| @Override |
| public PsiReference[] getReferencesByElement(@NotNull final PsiElement element, @NotNull final ProcessingContext context) { |
| return new PsiReference[]{new LanguageReference((PsiLiteralExpression)element)}; |
| } |
| }); |
| registrar.registerReferenceProvider(literalExpression().with(new PatternCondition<PsiLiteralExpression>("isStringLiteral") { |
| @Override |
| public boolean accepts(@NotNull final PsiLiteralExpression expression, final ProcessingContext context) { |
| return PsiUtilEx.isStringOrCharacterLiteral(expression); |
| } |
| }), new PsiReferenceProvider() { |
| @NotNull |
| @Override |
| public PsiReference[] getReferencesByElement(@NotNull PsiElement psiElement, @NotNull ProcessingContext context) { |
| final PsiLiteralExpression expression = (PsiLiteralExpression)psiElement; |
| final PsiModifierListOwner owner = |
| AnnotationUtilEx.getAnnotatedElementFor(expression, AnnotationUtilEx.LookupType.PREFER_DECLARATION); |
| if (owner != null && PsiUtilEx.isLanguageAnnotationTarget(owner)) { |
| final PsiAnnotation[] annotations = AnnotationUtilEx.getAnnotationFrom(owner, configuration.getAdvancedConfiguration().getPatternAnnotationPair(), true); |
| if (annotations.length > 0) { |
| final String pattern = AnnotationUtilEx.calcAnnotationValue(annotations, "value"); |
| if (pattern != null) { |
| return new PsiReference[]{new RegExpEnumReference(expression, pattern)}; |
| } |
| } |
| } |
| return PsiReference.EMPTY_ARRAY; |
| } |
| }); |
| } |
| |
| } |