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Diffstat (limited to 'tools/external/asm/org/objectweb/asm/commons/Method.java')
| -rw-r--r-- | tools/external/asm/org/objectweb/asm/commons/Method.java | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/tools/external/asm/org/objectweb/asm/commons/Method.java b/tools/external/asm/org/objectweb/asm/commons/Method.java new file mode 100644 index 000000000..741e7b5be --- /dev/null +++ b/tools/external/asm/org/objectweb/asm/commons/Method.java @@ -0,0 +1,220 @@ +/*** + * ASM: a very small and fast Java bytecode manipulation framework + * Copyright (c) 2000-2005 INRIA, France Telecom + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.objectweb.asm.commons; + +import java.util.HashMap; +import java.util.Map; + +import org.objectweb.asm.Type; + +/** + * A named method descriptor. + * + * @author Juozas Baliuka + * @author Chris Nokleberg + * @author Eric Bruneton + */ +public class Method { + + /** + * The method name. + */ + private final String name; + + /** + * The method descriptor. + */ + private final String desc; + + /** + * Maps primitive Java type names to their descriptors. + */ + private final static Map DESCRIPTORS; + + static { + DESCRIPTORS = new HashMap(); + DESCRIPTORS.put("void", "V"); + DESCRIPTORS.put("byte", "B"); + DESCRIPTORS.put("char", "C"); + DESCRIPTORS.put("double", "D"); + DESCRIPTORS.put("float", "F"); + DESCRIPTORS.put("int", "I"); + DESCRIPTORS.put("long", "J"); + DESCRIPTORS.put("short", "S"); + DESCRIPTORS.put("boolean", "Z"); + } + + /** + * Creates a new {@link Method}. + * + * @param name the method's name. + * @param desc the method's descriptor. + */ + public Method(final String name, final String desc) { + this.name = name; + this.desc = desc; + } + + /** + * Creates a new {@link Method}. + * + * @param name the method's name. + * @param returnType the method's return type. + * @param argumentTypes the method's argument types. + */ + public Method( + final String name, + final Type returnType, + final Type[] argumentTypes) + { + this(name, Type.getMethodDescriptor(returnType, argumentTypes)); + } + + /** + * Returns a {@link Method} corresponding to the given Java method + * declaration. + * + * @param method a Java method declaration, without argument names, of the + * form "returnType name (argumentType1, ... argumentTypeN)", where + * the types are in plain Java (e.g. "int", "float", + * "java.util.List", ...). + * @return a {@link Method} corresponding to the given Java method + * declaration. + * @throws IllegalArgumentException if <code>method</code> could not get + * parsed. + */ + public static Method getMethod(final String method) + throws IllegalArgumentException + { + int space = method.indexOf(' '); + int start = method.indexOf('(', space) + 1; + int end = method.indexOf(')', start); + if (space == -1 || start == -1 || end == -1) { + throw new IllegalArgumentException(); + } + // TODO: Check validity of returnType, methodName and arguments. + String returnType = method.substring(0, space); + String methodName = method.substring(space + 1, start - 1).trim(); + StringBuffer sb = new StringBuffer(); + sb.append('('); + int p; + do { + p = method.indexOf(',', start); + if (p == -1) { + sb.append(map(method.substring(start, end).trim())); + } else { + sb.append(map(method.substring(start, p).trim())); + start = p + 1; + } + } while (p != -1); + sb.append(')'); + sb.append(map(returnType)); + return new Method(methodName, sb.toString()); + } + + private static String map(final String type) { + if (type.equals("")) { + return type; + } + + StringBuffer sb = new StringBuffer(); + int index = 0; + while ((index = type.indexOf("[]", index) + 1) > 0) { + sb.append('['); + } + + String t = type.substring(0, type.length() - sb.length() * 2); + String desc = (String) DESCRIPTORS.get(t); + if (desc != null) { + sb.append(desc); + } else { + sb.append('L'); + if (t.indexOf('.') < 0) { + sb.append("java/lang/" + t); + } else { + sb.append(t.replace('.', '/')); + } + sb.append(';'); + } + return sb.toString(); + } + + /** + * Returns the name of the method described by this object. + * + * @return the name of the method described by this object. + */ + public String getName() { + return name; + } + + /** + * Returns the descriptor of the method described by this object. + * + * @return the descriptor of the method described by this object. + */ + public String getDescriptor() { + return desc; + } + + /** + * Returns the return type of the method described by this object. + * + * @return the return type of the method described by this object. + */ + public Type getReturnType() { + return Type.getReturnType(desc); + } + + /** + * Returns the argument types of the method described by this object. + * + * @return the argument types of the method described by this object. + */ + public Type[] getArgumentTypes() { + return Type.getArgumentTypes(desc); + } + + public String toString() { + return name + desc; + } + + public boolean equals(final Object o) { + if (!(o instanceof Method)) { + return false; + } + Method other = (Method) o; + return name.equals(other.name) && desc.equals(other.desc); + } + + public int hashCode() { + return name.hashCode() ^ desc.hashCode(); + } +}
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