Add implementations for JavacMemberValuePairBinding

Signed-off-by: David Thompson <davthomp@redhat.com>
akurtakov · Aug 16, 2024 · 7cebb04 · 7cebb04
1 parent f0b686f
commit 7cebb04
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Showing 3 changed files with 46 additions and 29 deletions.
diff --git a/org.eclipse.jdt.core.javac/src/org/eclipse/jdt/core/dom/JavacBindingResolver.java b/org.eclipse.jdt.core.javac/src/org/eclipse/jdt/core/dom/JavacBindingResolver.java
@@ -15,6 +15,7 @@
 import java.util.Optional;
 import java.util.Queue;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.internal.javac.dom.JavacAnnotationBinding;
@@ -24,6 +25,7 @@
 import org.eclipse.jdt.internal.javac.dom.JavacTypeBinding;
 import org.eclipse.jdt.internal.javac.dom.JavacVariableBinding;
 
+import com.sun.tools.javac.code.Attribute;
 import com.sun.tools.javac.code.Symbol;
 import com.sun.tools.javac.code.Symbol.MethodSymbol;
 import com.sun.tools.javac.code.Symbol.PackageSymbol;
@@ -329,4 +331,39 @@ private java.util.List<TypeSymbol> getTypeArguments(final MethodInvocation metho
 			.collect(Collectors.toList());
 	}
 
+	/**
+	 * Returns the constant value or the binding that a Javac attribute represents.
+	 *
+	 * See a detailed explanation of the returned value: {@link org.eclipse.jdt.core.dom.IMethodBinding#getDefaultValue()}
+	 *
+	 * @param attribute the javac attribute
+	 * @return the constant value or the binding that a Javac attribute represents
+	 */
+	public Object getValueFromAttribute(Attribute attribute) {
+		if (attribute == null) {
+			return null;
+		}
+		if (attribute instanceof Attribute.Constant constant) {
+			return constant.value;
+		} else if (attribute instanceof Attribute.Class clazz) {
+			return new JavacTypeBinding(clazz.classType.tsym, this, null);
+		} else if (attribute instanceof Attribute.Enum enumm) {
+			return new JavacVariableBinding(enumm.value, this);
+		} else if (attribute instanceof Attribute.Array array) {
+			return Stream.of(array.values) //
+					.map(nestedAttr -> {
+						if (attribute instanceof Attribute.Constant constant) {
+							return constant.value;
+						} else if (attribute instanceof Attribute.Class clazz) {
+							return new JavacTypeBinding(clazz.classType.tsym, this, null);
+						} else if (attribute instanceof Attribute.Enum enumerable) {
+							return new JavacVariableBinding(enumerable.value, this);
+						}
+						throw new IllegalArgumentException("Unexpected attribute type: " + nestedAttr.getClass().getCanonicalName());
+					}) //
+					.toArray(Object[]::new);
+		}
+		throw new IllegalArgumentException("Unexpected attribute type: " + attribute.getClass().getCanonicalName());
+	}
+
 }
diff --git a/...se.jdt.core.javac/src/org/eclipse/jdt/internal/javac/dom/JavacMemberValuePairBinding.java b/...se.jdt.core.javac/src/org/eclipse/jdt/internal/javac/dom/JavacMemberValuePairBinding.java
@@ -26,10 +26,12 @@ public class JavacMemberValuePairBinding implements IMemberValuePairBinding {
 
 	public final JavacMethodBinding method;
 	public final Attribute value;
+	private final JavacBindingResolver resolver;
 
 	public JavacMemberValuePairBinding(MethodSymbol key, Attribute value, JavacBindingResolver resolver) {
 		this.method = new JavacMethodBinding(key, resolver, null);
 		this.value = value;
+		this.resolver = resolver;
 	}
 
 	@Override
@@ -54,8 +56,7 @@ public boolean isDeprecated() {
 
 	@Override
 	public boolean isRecovered() {
-		// TODO Auto-generated method stub
-		throw new UnsupportedOperationException("Unimplemented method 'isRecovered'");
+		return this.value instanceof Attribute.Error;
 	}
 
 	@Override
@@ -70,8 +71,9 @@ public IJavaElement getJavaElement() {
 
 	@Override
 	public String getKey() {
-		// TODO Auto-generated method stub
-		throw new UnsupportedOperationException("Unimplemented method 'getKey'");
+		// as of writing, not yet implemented for ECJ
+		// @see org.eclipse.jdt.core.dom.MemberValuePairBinding.getKey
+		return null;
 	}
 
 	@Override
@@ -92,13 +94,12 @@ public IMethodBinding getMethodBinding() {
 
 	@Override
 	public Object getValue() {
-		throw new UnsupportedOperationException("Unimplemented method 'getValue'");
+		return this.resolver.getValueFromAttribute(this.value);
 	}
 
 	@Override
 	public boolean isDefault() {
-		// TODO Auto-generated method stub
-		throw new UnsupportedOperationException("Unimplemented method 'isDefault'");
+		return this.value == this.method.methodSymbol.defaultValue;
 	}
 
 }
diff --git a/org.eclipse.jdt.core.javac/src/org/eclipse/jdt/internal/javac/dom/JavacMethodBinding.java b/org.eclipse.jdt.core.javac/src/org/eclipse/jdt/internal/javac/dom/JavacMethodBinding.java
@@ -210,28 +210,7 @@ public IBinding getDeclaringMember() {
 
 	@Override
 	public Object getDefaultValue() {
-		Attribute attribute = this.methodSymbol.defaultValue;
-		if (attribute instanceof Attribute.Constant constant) {
-			return constant.value;
-		} else if (attribute instanceof Attribute.Class clazz) {
-			return new JavacTypeBinding(clazz.classType.tsym, this.resolver, null);
-		} else if (attribute instanceof Attribute.Enum enumm) {
-			return new JavacVariableBinding(enumm.value, this.resolver);
-		} else if (attribute instanceof Attribute.Array array) {
-			return Stream.of(array.values) //
-					.map(nestedAttr -> {
-						if (attribute instanceof Attribute.Constant constant) {
-							return constant.value;
-						} else if (attribute instanceof Attribute.Class clazz) {
-							return new JavacTypeBinding(clazz.classType.tsym, this.resolver, null);
-						} else if (attribute instanceof Attribute.Enum enumerable) {
-							return new JavacVariableBinding(enumerable.value, this.resolver);
-						}
-						throw new IllegalArgumentException("Unexpected attribute type: " + nestedAttr.getClass().getCanonicalName());
-					}) //
-					.toArray(Object[]::new);
-		}
-		throw new IllegalArgumentException("Unexpected attribute type: " + attribute.getClass().getCanonicalName());
+		return this.resolver.getValueFromAttribute(this.methodSymbol.defaultValue);
 	}
 
 	@Override