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lambda expressions breadcrumbs

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This commit is contained in:
Gregory.Shrago
2016-06-10 00:16:59 +03:00
parent 5e60c4316d
commit b7dbe56df0
1 changed files with 30 additions and 4 deletions
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java/java-impl/src/com/intellij/lang/java/JavaBreadcrumbsInfoProvider.java
+30 -4
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@@ -16,9 +16,8 @@
package com.intellij.lang.java;
import com.intellij.lang.Language;
import com.intellij.psi.ElementDescriptionUtil;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiMember;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.*;
import com.intellij.refactoring.util.RefactoringDescriptionLocation;
import com.intellij.usageView.UsageViewShortNameLocation;
import com.intellij.xml.breadcrumbs.BreadcrumbsInfoProvider;
@@ -37,18 +36,45 @@ public class JavaBreadcrumbsInfoProvider extends BreadcrumbsInfoProvider {
@Override
public boolean acceptElement(@NotNull PsiElement e) {
return e instanceof PsiMember;
return e instanceof PsiMember || e instanceof PsiLambdaExpression;
}
@NotNull
@Override
public String getElementInfo(@NotNull PsiElement e) {
if (e instanceof PsiLambdaExpression) {
PsiType type = ((PsiFunctionalExpression)e).getFunctionalInterfaceType();
return type == null ? "<lambda>" : "lambda " + PsiNameHelper.getShortClassName(type.getCanonicalText());
}
return ElementDescriptionUtil.getElementDescription(e, UsageViewShortNameLocation.INSTANCE);
}
@Nullable
@Override
public String getElementTooltip(@NotNull PsiElement e) {
if (e instanceof PsiLambdaExpression) return getLambdaDescription((PsiLambdaExpression)e);
return ElementDescriptionUtil.getElementDescription(e, RefactoringDescriptionLocation.WITH_PARENT);
}
@NotNull
private static String getLambdaDescription(@NotNull PsiLambdaExpression e) {
StringBuilder sb = new StringBuilder("lambda");
PsiType functionalInterfaceType = e.getFunctionalInterfaceType();
if (functionalInterfaceType != null) {
String shortClassName = PsiNameHelper.getShortClassName(functionalInterfaceType.getCanonicalText());
sb.append(" ").append(StringUtil.htmlEmphasize(shortClassName));
}
PsiParameter[] parameters = e.getParameterList().getParameters();
if (parameters.length > 0) {
sb.append(" (");
for (int i = 0; i < parameters.length; i++) {
if (i > 0) sb.append(", ");
String str = PsiNameHelper.getShortClassName(parameters[i].getType().getCanonicalText());
if (str.isEmpty()) str = StringUtil.notNullize(parameters[i].getName());
sb.append(StringUtil.htmlEmphasize(str));
}
sb.append(")");
}
return sb.toString();
}
}