com.sun.tools.oldlets.javadoc.main.MethodDocImpl Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package com.sun.tools.oldlets.javadoc.main;
import com.sun.javadoc.ClassDoc;
import com.sun.javadoc.MethodDoc;
import java.lang.reflect.Modifier;
import com.sun.source.util.TreePath;
import com.sun.tools.javac.code.*;
import com.sun.tools.javac.code.Symbol.*;
import com.sun.tools.javac.code.Type;
import static com.sun.tools.javac.code.TypeTag.CLASS;
/**
* Represents a method of a java class.
*
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.
*
* @since 1.2
* @author Robert Field
* @author Neal Gafter (rewrite)
*/
public class MethodDocImpl
extends ExecutableMemberDocImpl implements MethodDoc {
/**
* constructor.
*/
public MethodDocImpl(DocEnv env, MethodSymbol sym) {
super(env, sym);
}
/**
* constructor.
*/
public MethodDocImpl(DocEnv env, MethodSymbol sym, TreePath treePath) {
super(env, sym, treePath);
}
/**
* Return true if it is a method, which it is.
* Note: constructors are not methods.
* This method is overridden by AnnotationTypeElementDocImpl.
*
* @return true
*/
public boolean isMethod() {
return true;
}
/**
* Return true if this method is default
*/
public boolean isDefault() {
return (sym.flags() & Flags.DEFAULT) != 0;
}
/**
* Return true if this method is abstract
*/
public boolean isAbstract() {
return (Modifier.isAbstract(getModifiers()) && !isDefault());
}
/**
* Get return type.
*
* @return the return type of this method, null if it
* is a constructor.
*/
public com.sun.javadoc.Type returnType() {
return TypeMaker.getType(env, sym.type.getReturnType(), false);
}
/**
* Return the class that originally defined the method that
* is overridden by the current definition, or null if no
* such class exists.
*
* @return a ClassDocImpl representing the superclass that
* originally defined this method, null if this method does
* not override a definition in a superclass.
*/
public ClassDoc overriddenClass() {
com.sun.javadoc.Type t = overriddenType();
return (t != null) ? t.asClassDoc() : null;
}
/**
* Return the type containing the method that this method overrides.
* It may be a ClassDoc or a ParameterizedType.
*/
public com.sun.javadoc.Type overriddenType() {
if ((sym.flags() & Flags.STATIC) != 0) {
return null;
}
ClassSymbol origin = (ClassSymbol)sym.owner;
for (Type t = env.types.supertype(origin.type);
t.hasTag(CLASS);
t = env.types.supertype(t)) {
ClassSymbol c = (ClassSymbol)t.tsym;
for (Symbol sym2 : SymbolKind.getSymbolsByName(membersOf(c), true, sym.name)) {
if (sym.overrides(sym2, origin, env.types, true)) {
return TypeMaker.getType(env, t);
}
}
}
return null;
}
/**
* Return the method that this method overrides.
*
* @return a MethodDoc representing a method definition
* in a superclass this method overrides, null if
* this method does not override.
*/
public MethodDoc overriddenMethod() {
// Real overriding only. Static members are simply hidden.
// Likewise for constructors, but the MethodSymbol.overrides
// method takes this into account.
if ((sym.flags() & Flags.STATIC) != 0) {
return null;
}
// Derived from com.sun.tools.javac.comp.Check.checkOverride .
ClassSymbol origin = (ClassSymbol)sym.owner;
for (Type t = env.types.supertype(origin.type);
t.hasTag(CLASS);
t = env.types.supertype(t)) {
ClassSymbol c = (ClassSymbol)t.tsym;
for (Symbol sym2 : SymbolKind.getSymbolsByName(membersOf(c), false, sym.name)) {
if (sym.overrides(sym2, origin, env.types, true)) {
return env.getMethodDoc((MethodSymbol)sym2);
}
}
}
return null;
}
/**Retrieve members of c, ignoring any CompletionFailures that occur. */
private Scope membersOf(ClassSymbol c) {
try {
Scope members = SymbolKind.invokeOrNull(c, "members");
return members;
} catch (CompletionFailure cf) {
/* Quietly ignore completion failures and try again - the type
* for which the CompletionFailure was thrown shouldn't be completed
* again by the completer that threw the CompletionFailure.
*/
return membersOf(c);
}
}
/**
* Tests whether this method overrides another.
* The overridden method may be one declared in a superclass or
* a superinterface (unlike {@link #overriddenMethod()}).
*
*
When a non-abstract method overrides an abstract one, it is
* also said to implement the other.
*
* @param meth the other method to examine
* @return true if this method overrides the other
*/
public boolean overrides(MethodDoc meth) {
MethodSymbol overridee = ((MethodDocImpl) meth).sym;
ClassSymbol origin = (ClassSymbol) sym.owner;
return sym.name == overridee.name &&
// not reflexive as per JLS
sym != overridee &&
// we don't care if overridee is static, though that wouldn't
// compile
!sym.isStatic() &&
// sym, whose declaring type is the origin, must be
// in a subtype of overridee's type
env.types.asSuper(origin.type, overridee.owner) != null &&
// check access and signatures; don't check return types
sym.overrides(overridee, origin, env.types, false);
}
public String name() {
if (name == null) {
name = sym.name.toString();
}
return name;
}
private String name;
public String qualifiedName() {
if (qualifiedName == null) {
qualifiedName = sym.enclClass().getQualifiedName() + "." + sym.name;
}
return qualifiedName;
}
private String qualifiedName;
/**
* Returns a string representation of this method. Includes the
* qualified signature, the qualified method name, and any type
* parameters. Type parameters follow the class name, as they do
* in the syntax for invoking methods with explicit type parameters.
*/
public String toString() {
return sym.enclClass().getQualifiedName() +
"." + typeParametersString() + name() + signature();
}
}