diff options
Diffstat (limited to 'libjava/java/lang/reflect/Method.java')
| -rw-r--r-- | libjava/java/lang/reflect/Method.java | 210 |
1 files changed, 176 insertions, 34 deletions
diff --git a/libjava/java/lang/reflect/Method.java b/libjava/java/lang/reflect/Method.java index a5047f5..3142d64 100644 --- a/libjava/java/lang/reflect/Method.java +++ b/libjava/java/lang/reflect/Method.java @@ -1,6 +1,6 @@ // Method.java - Represent method of class or interface. -/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation +/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2006 Free Software Foundation This file is part of libgcj. @@ -11,6 +11,7 @@ details. */ package java.lang.reflect; import gnu.gcj.RawData; +import gnu.java.lang.reflect.MethodSignatureParser; /** * The Method class represents a member method of a class. It also allows @@ -39,16 +40,21 @@ import gnu.gcj.RawData; * @author Tom Tromey <tromey@redhat.com> * @see Member * @see Class - * @see java.lang.Class#getMethod(String,Object[]) - * @see java.lang.Class#getDeclaredMethod(String,Object[]) + * @see java.lang.Class#getMethod(String,Class[]) + * @see java.lang.Class#getDeclaredMethod(String,Class[]) * @see java.lang.Class#getMethods() * @see java.lang.Class#getDeclaredMethods() * @since 1.1 * @status updated to 1.4 */ -public final class Method extends AccessibleObject - implements Member, GenericDeclaration +public final class Method + extends AccessibleObject implements Member, GenericDeclaration { + private static final int METHOD_MODIFIERS + = Modifier.ABSTRACT | Modifier.FINAL | Modifier.NATIVE + | Modifier.PRIVATE | Modifier.PROTECTED | Modifier.PUBLIC + | Modifier.STATIC | Modifier.STRICT | Modifier.SYNCHRONIZED; + /** * This class is uninstantiable. */ @@ -61,7 +67,7 @@ public final class Method extends AccessibleObject * is a non-inherited member. * @return the class that declared this member */ - public Class getDeclaringClass () + public Class getDeclaringClass() { return declaringClass; } @@ -73,6 +79,12 @@ public final class Method extends AccessibleObject public native String getName (); /** + * Return the raw modifiers for this method. + * @return the method's modifiers + */ + private native int getModifiersInternal(); + + /** * Gets the modifiers this method uses. Use the <code>Modifier</code> * class to interpret the values. A method can only have a subset of the * following modifiers: public, private, protected, abstract, static, @@ -81,7 +93,40 @@ public final class Method extends AccessibleObject * @return an integer representing the modifiers to this Member * @see Modifier */ - public native int getModifiers (); + public int getModifiers() + { + return getModifiersInternal() & METHOD_MODIFIERS; + } + + /** + * Return true if this method is a bridge method. A bridge method + * is generated by the compiler in some situations involving + * generics and inheritance. + * @since 1.5 + */ + public boolean isBridge() + { + return (getModifiersInternal() & Modifier.BRIDGE) != 0; + } + + /** + * Return true if this method is synthetic, false otherwise. + * @since 1.5 + */ + public boolean isSynthetic() + { + return (getModifiersInternal() & Modifier.SYNTHETIC) != 0; + } + + /** + * Return true if this is a varargs method, that is if + * the method takes a variable number of arguments. + * @since 1.5 + */ + public boolean isVarArgs() + { + return (getModifiersInternal() & Modifier.VARARGS) != 0; + } /** * Gets the return type of this method. @@ -139,14 +184,14 @@ public final class Method extends AccessibleObject } /** - * Get the hash code for the Method. + * Get the hash code for the Method. The Method hash code is the hash code + * of its name XOR'd with the hash code of its class name. * * @return the hash code for the object */ - public int hashCode () + public int hashCode() { - // FIXME. - return getName().hashCode() + declaringClass.getName().hashCode(); + return getDeclaringClass().getName().hashCode() ^ getName().hashCode(); } /** @@ -158,7 +203,7 @@ public final class Method extends AccessibleObject * * @return the String representation of the Method */ - public String toString () + public String toString() { if (parameter_types == null) getType (); @@ -196,6 +241,33 @@ public final class Method extends AccessibleObject return b.toString(); } + public String toGenericString() + { + // 128 is a reasonable buffer initial size for constructor + StringBuilder sb = new StringBuilder(128); + Modifier.toString(getModifiers(), sb).append(' '); + Constructor.addTypeParameters(sb, getTypeParameters()); + sb.append(getGenericReturnType()).append(' '); + sb.append(getDeclaringClass().getName()).append('.'); + sb.append(getName()).append('('); + Type[] types = getGenericParameterTypes(); + if (types.length > 0) + { + sb.append(types[0]); + for (int i = 1; i < types.length; i++) + sb.append(',').append(types[i]); + } + sb.append(')'); + types = getGenericExceptionTypes(); + if (types.length > 0) + { + sb.append(" throws ").append(types[0]); + for (int i = 1; i < types.length; i++) + sb.append(',').append(types[i]); + } + return sb.toString(); + } + /** * Invoke the method. Arguments are automatically unwrapped and widened, * and the result is automatically wrapped, if needed.<p> @@ -241,6 +313,98 @@ public final class Method extends AccessibleObject throws IllegalAccessException, IllegalArgumentException, InvocationTargetException; + /** + * Returns an array of <code>TypeVariable</code> objects that represents + * the type variables declared by this constructor, in declaration order. + * An array of size zero is returned if this class has no type + * variables. + * + * @return the type variables associated with this class. + * @throws GenericSignatureFormatError if the generic signature does + * not conform to the format specified in the Virtual Machine + * specification, version 3. + * @since 1.5 + */ + /* FIXME[GENERICS]: Should be TypeVariable<Method>[] */ + public TypeVariable[] getTypeParameters() + { + String sig = getSignature(); + if (sig == null) + return new TypeVariable[0]; + MethodSignatureParser p = new MethodSignatureParser(this, sig); + return p.getTypeParameters(); + } + + /** + * Return the String in the Signature attribute for this method. If there + * is no Signature attribute, return null. + */ + private String getSignature() + { + // FIXME: libgcj doesn't record this information yet. + return null; + } + + /** + * Returns an array of <code>Type</code> objects that represents + * the exception types declared by this method, in declaration order. + * An array of size zero is returned if this method declares no + * exceptions. + * + * @return the exception types declared by this method. + * @throws GenericSignatureFormatError if the generic signature does + * not conform to the format specified in the Virtual Machine + * specification, version 3. + * @since 1.5 + */ + public Type[] getGenericExceptionTypes() + { + String sig = getSignature(); + if (sig == null) + return getExceptionTypes(); + MethodSignatureParser p = new MethodSignatureParser(this, sig); + return p.getGenericExceptionTypes(); + } + + /** + * Returns an array of <code>Type</code> objects that represents + * the parameter list for this method, in declaration order. + * An array of size zero is returned if this method takes no + * parameters. + * + * @return a list of the types of the method's parameters + * @throws GenericSignatureFormatError if the generic signature does + * not conform to the format specified in the Virtual Machine + * specification, version 3. + * @since 1.5 + */ + public Type[] getGenericParameterTypes() + { + String sig = getSignature(); + if (sig == null) + return getParameterTypes(); + MethodSignatureParser p = new MethodSignatureParser(this, sig); + return p.getGenericParameterTypes(); + } + + /** + * Returns the return type of this method. + * + * @return the return type of this method + * @throws GenericSignatureFormatError if the generic signature does + * not conform to the format specified in the Virtual Machine + * specification, version 3. + * @since 1.5 + */ + public Type getGenericReturnType() + { + String sig = getSignature(); + if (sig == null) + return getReturnType(); + MethodSignatureParser p = new MethodSignatureParser(this, sig); + return p.getGenericReturnType(); + } + private native void getType (); // Append a class name to a string buffer. We try to print the @@ -263,28 +427,6 @@ public final class Method extends AccessibleObject } } - // FIXME - Write a real implementation - public boolean isSynthetic() { return false; } - - /** - * Returns an array of <code>TypeVariable</code> objects that represents - * the type variables declared by this constructor, in declaration order. - * An array of size zero is returned if this class has no type - * variables. - * - * @return the type variables associated with this class. - * @throws GenericSignatureFormatError if the generic signature does - * not conform to the format specified in the Virtual Machine - * specification, version 3. - * @since 1.5 - */ - /* FIXME[GENERICS]: Should be TypeVariable<Method>[] */ - public TypeVariable[] getTypeParameters() - { - // FIXME - write a real implementation - return new TypeVariable[0]; - } - // Declaring class. private Class declaringClass; |