--- /dev/null 2015-10-08 07:25:47.000000000 -1000 +++ new/src/jdk.vm.ci/share/classes/jdk.vm.ci.meta/src/jdk/vm/ci/meta/JavaMethod.java 2015-10-08 07:25:47.000000000 -1000 @@ -0,0 +1,135 @@ +/* + * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * 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). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package jdk.vm.ci.meta; + +import java.util.*; + +/** + * Represents a reference to a Java method, either resolved or unresolved. Methods, like fields and + * types, are resolved through {@link ConstantPool constant pools}. + */ +public interface JavaMethod extends TrustedInterface { + + /** + * Returns the name of this method. + */ + String getName(); + + /** + * Returns the {@link JavaType} object representing the class or interface that declares this + * method. + */ + JavaType getDeclaringClass(); + + /** + * Returns the signature of this method. + */ + Signature getSignature(); + + /** + * Gets a string for this method formatted according to a given format specification. A format + * specification is composed of characters that are to be copied verbatim to the result and + * specifiers that denote an attribute of this method that is to be copied to the result. A + * specifier is a single character preceded by a '%' character. The accepted specifiers and the + * method attributes they denote are described below: + * + *
+     *     Specifier | Description                                          | Example(s)
+     *     ----------+------------------------------------------------------------------------------------------
+     *     'R'       | Qualified return type                                | "int" "java.lang.String"
+     *     'r'       | Unqualified return type                              | "int" "String"
+     *     'H'       | Qualified holder                                     | "java.util.Map.Entry"
+     *     'h'       | Unqualified holder                                   | "Entry"
+     *     'n'       | Method name                                          | "add"
+     *     'P'       | Qualified parameter types, separated by ', '         | "int, java.lang.String"
+     *     'p'       | Unqualified parameter types, separated by ', '       | "int, String"
+     *     'f'       | Indicator if method is unresolved, static or virtual | "unresolved" "static" "virtual"
+     *     '%'       | A '%' character                                      | "%"
+     * 
+ * + * @param format a format specification + * @return the result of formatting this method according to {@code format} + * @throws IllegalFormatException if an illegal specifier is encountered in {@code format} + */ + @SuppressWarnings("fallthrough") + default String format(String format) throws IllegalFormatException { + StringBuilder sb = new StringBuilder(); + int index = 0; + Signature sig = null; + while (index < format.length()) { + char ch = format.charAt(index++); + if (ch == '%') { + if (index >= format.length()) { + throw new UnknownFormatConversionException("An unquoted '%' character cannot terminate a method format specification"); + } + char specifier = format.charAt(index++); + switch (specifier) { + case 'R': + case 'r': { + if (sig == null) { + sig = getSignature(); + } + sb.append(sig.getReturnType(null).toJavaName(specifier == 'R')); + break; + } + case 'H': + case 'h': { + sb.append(getDeclaringClass().toJavaName(specifier == 'H')); + break; + } + case 'n': { + sb.append(getName()); + break; + } + case 'P': + case 'p': { + if (sig == null) { + sig = getSignature(); + } + for (int i = 0; i < sig.getParameterCount(false); i++) { + if (i != 0) { + sb.append(", "); + } + sb.append(sig.getParameterType(i, null).toJavaName(specifier == 'P')); + } + break; + } + case 'f': { + sb.append(!(this instanceof ResolvedJavaMethod) ? "unresolved" : ((ResolvedJavaMethod) this).isStatic() ? "static" : "virtual"); + break; + } + case '%': { + sb.append('%'); + break; + } + default: { + throw new UnknownFormatConversionException(String.valueOf(specifier)); + } + } + } else { + sb.append(ch); + } + } + return sb.toString(); + } +}