diff options
Diffstat (limited to 'libjava/classpath/gnu/java/lang')
7 files changed, 1318 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/lang/ClassHelper.java b/libjava/classpath/gnu/java/lang/ClassHelper.java index 14c8a39c478..49dce21eaf9 100644 --- a/libjava/classpath/gnu/java/lang/ClassHelper.java +++ b/libjava/classpath/gnu/java/lang/ClassHelper.java @@ -81,6 +81,34 @@ public class ClassHelper return name.substring(lastInd + 1); } + /** + * Return the name of the class as written by the user. + * This is used by the various reflection toString methods. + * It differs from {@link Class#getName()} in that it prints + * arrays with trailing "[]"s. Note that it does not treat + * member classes specially, so a dollar sign may still appear + * in the result. This is intentional. + * @param klass the class + * @return a pretty form of the class' name + */ + public static String getUserName(Class klass) + { + int arrayCount = 0; + while (klass.isArray()) + { + ++arrayCount; + klass = klass.getComponentType(); + } + String name = klass.getName(); + if (arrayCount == 0) + return name; + StringBuilder b = new StringBuilder(name.length() + 2 * arrayCount); + b.append(name); + for (int i = 0; i < arrayCount; ++i) + b.append("[]"); + return b.toString(); + } + /** Cache of methods found in getAllMethods(). */ private static Map allMethods = new HashMap(); diff --git a/libjava/classpath/gnu/java/lang/InstrumentationImpl.java b/libjava/classpath/gnu/java/lang/InstrumentationImpl.java new file mode 100644 index 00000000000..7bfed458245 --- /dev/null +++ b/libjava/classpath/gnu/java/lang/InstrumentationImpl.java @@ -0,0 +1,243 @@ +/* InstrumentationImpl.java -- GNU implementation of + java.lang.instrument.Instrumentation + Copyright (C) 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.lang; + +import java.lang.instrument.Instrumentation; +import java.lang.instrument.ClassFileTransformer; +import java.lang.instrument.ClassDefinition; +import java.lang.instrument.UnmodifiableClassException; +import java.lang.instrument.IllegalClassFormatException; + +import java.security.ProtectionDomain; + +import java.util.ArrayList; +import java.util.Iterator; + +/** + * An Instrumentation object has transformers that will + * be called each time a class is defined or redefined. + * The object is given to a <code>premain</code> function + * that is called before the <code>main</code> function. + * + * @author Nicolas Geoffray (nicolas.geoffray@menlina.com) + * @since 1.5 + */ +public final class InstrumentationImpl implements Instrumentation +{ + + /* List of transformers */ + /* FIXME[GENERICS]: Should be ClassFileTransformer list */ + private ArrayList transformers = new ArrayList(); + + + private InstrumentationImpl() + { + } + + /** + * Adds a <code>ClassFileTransformer</class> object + * to the instrumentation. Each time a class is defined + * or redefined, the <code>transform</code> method of the + * <code>transformer</code> object is called. + * + * @param transformer the transformer to add + * @throws NullPointerException if transformer is null + */ + public void addTransformer(ClassFileTransformer transformer) + { + if (transformer == null) + throw new NullPointerException(); + synchronized(transformers) + { + transformers.add(transformer); + } + } + + /** + * Removes the given transformer from the set of transformers + * this Instrumentation object has. + * + * @param transformer the transformer to remove + * @return true if the transformer was found and removed, false if + * the transformer was not found + * @throws NullPointerException if transformer is null + */ + public boolean removeTransformer(ClassFileTransformer transformer) + { + if (transformer == null) + throw new NullPointerException(); + + boolean result; + synchronized (transformers) + { + result = transformers.remove(transformer); + } + return result; + } + + /** + * Returns if the current JVM supports class redefinition + * + * @return true if the current JVM supports class redefinition + */ + public boolean isRedefineClassesSupported() + { + return VMInstrumentationImpl.isRedefineClassesSupported(); + } + + /** + * Redefine classes present in the definitions array, with + * the corresponding class files. + * + * @param definitions an array of classes to redefine + * + * @throws ClassNotFoundException if a class cannot be found + * @throws UnmodifiableClassException if a class cannot be modified + * @throws UnsupportedOperationException if the JVM does not support + * redefinition or the redefinition made unsupported changes + * @throws ClassFormatError if a class file is not valid + * @throws NoClassDefFoundError if a class name is not equal to the name + * in the class file specified + * @throws UnsupportedClassVersionError if the class file version numbers + * are unsupported + * @throws ClassCircularityError if circularity occured with the new + * classes + * @throws LinkageError if a linkage error occurs + * @throws NullPointerException if the definitions array is null, or any + * of its element + * + * @see isRedefineClassesSupported() + * @see addTransformer(java.lang.instrument.ClassFileTransformer) + * @see ClassFileTransformer + */ + public void redefineClasses(ClassDefinition[] definitions) + throws ClassNotFoundException, + UnmodifiableClassException + { + if (!isRedefineClassesSupported()) + throw new UnsupportedOperationException(); + + VMInstrumentationImpl.redefineClasses(this, definitions); + } + + + /** + * Get all the classes loaded by the JVM. + * + * @return an array containing all the classes loaded by the JVM. The array + * is empty if no class is loaded. + */ + public Class[] getAllLoadedClasses() + { + return VMInstrumentationImpl.getAllLoadedClasses(); + } + + /** + * Get all the classes loaded by a given class loader + * + * @param loader the loader + * + * @return an array containing all the classes loaded by the given loader. + * The array is empty if no class was loaded by the loader. + */ + public Class[] getInitiatedClasses(ClassLoader loader) + { + return VMInstrumentationImpl.getInitiatedClasses(loader); + } + + /** + * Get the size of an object. + * + * @param objectToSize the object + * @return the size of the object + * @throws NullPointerException if objectToSize is null. + */ + public long getObjectSize(Object objectToSize) + { + // We alleviate the VM work + if (objectToSize == null) + throw new NullPointerException(); + return VMInstrumentationImpl.getObjectSize(objectToSize); + } + + /** + * Called by the VM or redefineClasses to call each transformer + * + * @param loader the loader of the class + * @param className the name of the class with packages separated with "/" + * @param classBeingRedefined the class being redefined if it's the case, + * null otherwise + * @param protectionDomain the protection domain of the class being defined + * or redefined + * @param classfileBuffer the input byte buffer in class file format + * + * @return the new class file + */ + /* FIXME[GENERICS]: Should be Class<?> */ + public byte[] callTransformers(ClassLoader loader, String className, + Class classBeingRedefined, ProtectionDomain protectionDomain, + byte[] classfileBuffer) + { + byte[] newBuffer = null; + byte[] oldBuffer = classfileBuffer; + ClassFileTransformer current; + synchronized (transformers) + { + Iterator i = transformers.iterator(); + while (i.hasNext()) + { + /* FIXME[GENERICS]: Remove cast */ + current = (ClassFileTransformer) i.next(); + try + { + newBuffer = current.transform(loader, className, + classBeingRedefined, protectionDomain, oldBuffer); + } + catch (IllegalClassFormatException ignored) + { + //IGNORED + } + if (newBuffer != null) + oldBuffer = newBuffer; + } + } + return oldBuffer; + } +} diff --git a/libjava/classpath/gnu/java/lang/reflect/ClassSignatureParser.java b/libjava/classpath/gnu/java/lang/reflect/ClassSignatureParser.java new file mode 100644 index 00000000000..0c9b962921e --- /dev/null +++ b/libjava/classpath/gnu/java/lang/reflect/ClassSignatureParser.java @@ -0,0 +1,92 @@ +/* ClassSignatureParser.java + Copyright (C) 2005 + Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.lang.reflect; + +import java.lang.reflect.*; +import java.util.ArrayList; + +public class ClassSignatureParser extends GenericSignatureParser +{ + private TypeVariable[] typeParameters; + private Type superclassType; + private Type[] interfaceTypes; + + public ClassSignatureParser(Class c, String signature) + { + super(c, c.getClassLoader(), signature); + + if (peekChar() == '<') + { + typeParameters = readFormalTypeParameters(); + } + else + { + typeParameters = new TypeVariable[0]; + } + // SuperclassSignature + superclassType = readClassTypeSignature(); + ArrayList interfaces = new ArrayList(); + while (peekChar() == 'L') + { + // SuperinterfaceSignature + interfaces.add(readClassTypeSignature()); + } + interfaceTypes = new Type[interfaces.size()]; + interfaces.toArray(interfaceTypes); + end(); + } + + public TypeVariable[] getTypeParameters() + { + TypeImpl.resolve(typeParameters); + return typeParameters; + } + + public Type getSuperclassType() + { + superclassType = TypeImpl.resolve(superclassType); + return superclassType; + } + + public Type[] getInterfaceTypes() + { + TypeImpl.resolve(interfaceTypes); + return interfaceTypes; + } +} diff --git a/libjava/classpath/gnu/java/lang/reflect/FieldSignatureParser.java b/libjava/classpath/gnu/java/lang/reflect/FieldSignatureParser.java new file mode 100644 index 00000000000..16622d33fbf --- /dev/null +++ b/libjava/classpath/gnu/java/lang/reflect/FieldSignatureParser.java @@ -0,0 +1,103 @@ +/* FieldSignatureParser.java + Copyright (C) 2005 + Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.lang.reflect; + +import java.lang.reflect.GenericSignatureFormatError; +import java.lang.reflect.Type; + +public final class FieldSignatureParser extends GenericSignatureParser +{ + private Type type; + + public FieldSignatureParser(Class container, String signature) + { + super(container, container.getClassLoader(), signature); + + switch (peekChar()) + { + case 'L': + case '[': + case 'T': + type = readFieldTypeSignature(); + break; + case 'Z': + consume('Z'); + type = boolean.class; + break; + case 'B': + consume('B'); + type = byte.class; + break; + case 'S': + consume('S'); + type = short.class; + break; + case 'C': + consume('C'); + type = char.class; + break; + case 'I': + consume('I'); + type = int.class; + break; + case 'F': + consume('F'); + type = float.class; + break; + case 'J': + consume('J'); + type = long.class; + break; + case 'D': + consume('D'); + type = double.class; + break; + default: + throw new GenericSignatureFormatError(); + } + + end(); + } + + public Type getFieldType() + { + type = TypeImpl.resolve(type); + return type; + } +} diff --git a/libjava/classpath/gnu/java/lang/reflect/GenericSignatureParser.java b/libjava/classpath/gnu/java/lang/reflect/GenericSignatureParser.java new file mode 100644 index 00000000000..399f1bdc46f --- /dev/null +++ b/libjava/classpath/gnu/java/lang/reflect/GenericSignatureParser.java @@ -0,0 +1,622 @@ +/* GenericSignatureParser.java + Copyright (C) 2005 + Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.lang.reflect; + +import java.lang.reflect.*; +import java.util.ArrayList; +import java.util.Arrays; + +final class TypeVariableImpl extends TypeImpl implements TypeVariable +{ + private GenericDeclaration decl; + private Type[] bounds; + private String name; + + TypeVariableImpl(GenericDeclaration decl, Type[] bounds, String name) + { + this.decl = decl; + this.bounds = bounds; + this.name = name; + } + + Type resolve() + { + return this; + } + + /* FIXME[GENERICS]: Remove cast */ + public Type[] getBounds() + { + resolve(bounds); + return (Type[]) bounds.clone(); + } + + public GenericDeclaration getGenericDeclaration() + { + return decl; + } + + public String getName() + { + return name; + } + + public boolean equals(Object obj) + { + if (obj instanceof TypeVariableImpl) + { + TypeVariableImpl other = (TypeVariableImpl)obj; + return decl.equals(other.decl) && name.equals(other.name); + } + return false; + } + + public int hashCode() + { + return 0x5f4d5156 ^ decl.hashCode() ^ name.hashCode(); + } + + public String toString() + { + return name; + } +} + +final class ParameterizedTypeImpl extends TypeImpl implements ParameterizedType +{ + private String rawTypeName; + private ClassLoader loader; + private Class rawType; + private Type owner; + private Type[] typeArgs; + + ParameterizedTypeImpl(String rawTypeName, ClassLoader loader, Type owner, + Type[] typeArgs) + { + this.rawTypeName = rawTypeName; + this.loader = loader; + this.owner = owner; + this.typeArgs = typeArgs; + } + + Type resolve() + { + if (rawType == null) + { + try + { + rawType = Class.forName(rawTypeName, false, loader); + } + catch (ClassNotFoundException x) + { + throw new TypeNotPresentException(rawTypeName, x); + } + } + if (typeArgs == null) + { + if (owner == null) + { + return rawType; + } + typeArgs = new Type[0]; + } + resolve(typeArgs); + owner = resolve(owner); + return this; + } + + /* FIXME[GENERICS]: Remove cast */ + public Type[] getActualTypeArguments() + { + return (Type[]) typeArgs.clone(); + } + + public Type getRawType() + { + return rawType; + } + + public Type getOwnerType() + { + return owner; + } + + public boolean equals(Object obj) + { + if (obj instanceof ParameterizedTypeImpl) + { + ParameterizedTypeImpl other = (ParameterizedTypeImpl)obj; + return rawType.equals(other.rawType) + && ((owner == null && other.owner == null) + || owner.equals(other.owner)) + && Arrays.deepEquals(typeArgs, other.typeArgs); + } + return false; + } + + public int hashCode() + { + int h = 0x58158970 ^ rawType.hashCode(); + if (owner != null) + { + h ^= Integer.reverse(owner.hashCode()); + } + for (int i = 0; i < typeArgs.length; i++) + { + h ^= Integer.rotateLeft(typeArgs[i].hashCode(), i); + } + return h; + } + + public String toString() + { + StringBuilder sb = new StringBuilder(); + if (owner != null) + { + sb.append(owner); + sb.append('.'); + sb.append(rawType.getSimpleName()); + } + else + { + sb.append(rawTypeName); + } + if (typeArgs.length > 0) + { + sb.append('<'); + for (int i = 0; i < typeArgs.length; i++) + { + if (i > 0) + sb.append(", "); + if (typeArgs[i] instanceof Class) + { + sb.append(((Class)typeArgs[i]).getName()); + } + else + { + sb.append(typeArgs[i]); + } + } + sb.append('>'); + } + return sb.toString(); + } +} + +final class GenericArrayTypeImpl extends TypeImpl implements GenericArrayType +{ + private Type componentType; + + GenericArrayTypeImpl(Type componentType) + { + this.componentType = componentType; + } + + Type resolve() + { + componentType = resolve(componentType); + return this; + } + + public Type getGenericComponentType() + { + return componentType; + } + + public boolean equals(Object obj) + { + if (obj instanceof GenericArrayTypeImpl) + { + GenericArrayTypeImpl other = (GenericArrayTypeImpl)obj; + return componentType.equals(other.componentType); + } + return false; + } + + public int hashCode() + { + return 0x4be37a7f ^ componentType.hashCode(); + } + + public String toString() + { + return componentType + "[]"; + } +} + +final class UnresolvedTypeVariable extends TypeImpl implements Type +{ + private GenericDeclaration decl; + private String name; + + UnresolvedTypeVariable(GenericDeclaration decl, String name) + { + this.decl = decl; + this.name = name; + } + + Type resolve() + { + GenericDeclaration d = decl; + while (d != null) + { + TypeVariable[] vars = d.getTypeParameters(); + for (int a = 0; a < vars.length ; ++a) + { + if (vars[a].getName().equals(name)) + { + return vars[a]; + } + } + d = getParent(d); + } + throw new MalformedParameterizedTypeException(); + } + + private static GenericDeclaration getParent(GenericDeclaration d) + { + if (d instanceof Class) + { + Method m = ((Class)d).getEnclosingMethod(); + if (m != null) + { + return m; + } + Constructor c = ((Class)d).getEnclosingConstructor(); + if (c != null) + { + return c; + } + return ((Class)d).getEnclosingClass(); + } + else if (d instanceof Method) + { + return ((Method)d).getDeclaringClass(); + } + else if (d instanceof Constructor) + { + return ((Constructor)d).getDeclaringClass(); + } + else + { + // TODO figure out what this represents + throw new Error(); + } + } +} + +final class WildcardTypeImpl extends TypeImpl implements WildcardType +{ + private Type lower; + private Type upper; + + WildcardTypeImpl(Type lower, Type upper) + { + this.lower = lower; + this.upper = upper; + } + + Type resolve() + { + upper = resolve(upper); + lower = resolve(lower); + return this; + } + + public Type[] getUpperBounds() + { + if (upper == null) + { + return new Type[0]; + } + return new Type[] { upper }; + } + + public Type[] getLowerBounds() + { + if (lower == null) + { + return new Type[0]; + } + return new Type[] { lower }; + } + + public boolean equals(Object obj) + { + if (obj instanceof WildcardTypeImpl) + { + WildcardTypeImpl other = (WildcardTypeImpl)obj; + return Arrays.deepEquals(getUpperBounds(), other.getUpperBounds()) + && Arrays.deepEquals(getLowerBounds(), other.getLowerBounds()); + } + return false; + } + + public int hashCode() + { + int h = 0x75d074fd; + if (upper != null) + { + h ^= upper.hashCode(); + } + if (lower != null) + { + h ^= lower.hashCode(); + } + return h; + } + + public String toString() + { + if (lower != null) + { + return "? super " + lower; + } + if (upper == java.lang.Object.class) + { + return "?"; + } + return "? extends " + upper; + } +} + +class GenericSignatureParser +{ + private ClassLoader loader; + private GenericDeclaration container; + private String signature; + private int pos; + + GenericSignatureParser(GenericDeclaration container, ClassLoader loader, + String signature) + { + this.container = container; + this.loader = loader; + this.signature = signature; + } + + TypeVariable[] readFormalTypeParameters() + { + consume('<'); + ArrayList params = new ArrayList(); + do + { + // TODO should we handle name clashes? + params.add(readFormalTypeParameter()); + } while (peekChar() != '>'); + consume('>'); + TypeVariable[] list = new TypeVariable[params.size()]; + params.toArray(list); + return list; + } + + private TypeVariable readFormalTypeParameter() + { + String identifier = readIdentifier(); + consume(':'); + ArrayList bounds = new ArrayList(); + if (peekChar() != ':') + { + bounds.add(readFieldTypeSignature()); + } + while (peekChar() == ':') + { + consume(':'); + bounds.add(readFieldTypeSignature()); + } + Type[] b = new Type[bounds.size()]; + bounds.toArray(b); + return new TypeVariableImpl(container, b, identifier); + } + + Type readFieldTypeSignature() + { + switch (peekChar()) + { + case 'L': + return readClassTypeSignature(); + case '[': + return readArrayTypeSignature(); + case 'T': + return readTypeVariableSignature(); + default: + throw new GenericSignatureFormatError(); + } + } + + Type readClassTypeSignature() + { + consume('L'); + String className = ""; + for (;;) + { + String part = readIdentifier(); + if (peekChar() != '/') + { + className += part; + break; + } + consume('/'); + className += part + "."; + } + Type[] typeArguments = null; + if (peekChar() == '<') + { + typeArguments = readTypeArguments(); + } + Type type = new ParameterizedTypeImpl(className, loader, null, + typeArguments); + while (peekChar() == '.') + { + consume('.'); + className += "$" + readIdentifier(); + typeArguments = null; + if (peekChar() == '<') + { + typeArguments = readTypeArguments(); + } + type = new ParameterizedTypeImpl(className, loader, type, + typeArguments); + } + consume(';'); + return type; + } + + private Type[] readTypeArguments() + { + consume('<'); + ArrayList list = new ArrayList(); + do + { + list.add(readTypeArgument()); + } while ((peekChar() != '>')); + consume('>'); + Type[] arr = new Type[list.size()]; + list.toArray(arr); + return arr; + } + + private Type readTypeArgument() + { + char c = peekChar(); + if (c == '+') + { + consume('+'); + return new WildcardTypeImpl(null, readFieldTypeSignature()); + } + else if (c == '-') + { + consume('-'); + return new WildcardTypeImpl(readFieldTypeSignature(), + java.lang.Object.class); + } + else if (c == '*') + { + consume('*'); + return new WildcardTypeImpl(null, java.lang.Object.class); + } + else + { + return readFieldTypeSignature(); + } + } + + Type readArrayTypeSignature() + { + consume('['); + switch (peekChar()) + { + case 'L': + case '[': + case 'T': + return new GenericArrayTypeImpl(readFieldTypeSignature()); + case 'Z': + consume('Z'); + return boolean[].class; + case 'B': + consume('B'); + return byte[].class; + case 'S': + consume('S'); + return short[].class; + case 'C': + consume('C'); + return char[].class; + case 'I': + consume('I'); + return int[].class; + case 'F': + consume('F'); + return float[].class; + case 'J': + consume('J'); + return long[].class; + case 'D': + consume('D'); + return double[].class; + default: + throw new GenericSignatureFormatError(); + } + } + + Type readTypeVariableSignature() + { + consume('T'); + String identifier = readIdentifier(); + consume(';'); + return new UnresolvedTypeVariable(container, identifier); + } + + private String readIdentifier() + { + int start = pos; + char c; + do + { + readChar(); + c = peekChar(); + } while (";:./<>-+*".indexOf(c) == -1); + return signature.substring(start, pos); + } + + final char peekChar() + { + if (pos == signature.length()) + return '\u0000'; + else + return signature.charAt(pos); + } + + final char readChar() + { + return signature.charAt(pos++); + } + + final void consume(char c) + { + if (readChar() != c) + throw new GenericSignatureFormatError(); + } + + final void end() + { + if (pos != signature.length()) + throw new GenericSignatureFormatError(); + } +} diff --git a/libjava/classpath/gnu/java/lang/reflect/MethodSignatureParser.java b/libjava/classpath/gnu/java/lang/reflect/MethodSignatureParser.java new file mode 100644 index 00000000000..16b1af99b73 --- /dev/null +++ b/libjava/classpath/gnu/java/lang/reflect/MethodSignatureParser.java @@ -0,0 +1,167 @@ +/* MethodSignatureParser.java + Copyright (C) 2005 + Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.lang.reflect; + +import java.lang.reflect.*; +import java.util.ArrayList; + +public class MethodSignatureParser extends GenericSignatureParser +{ + private TypeVariable[] typeParameters; + private Type[] argTypes; + private Type retType; + private Type[] throwsSigs; + + public MethodSignatureParser(Method method, String signature) + { + this(method, method.getDeclaringClass().getClassLoader(), signature); + } + + public MethodSignatureParser(Constructor method, String signature) + { + this(method, method.getDeclaringClass().getClassLoader(), signature); + } + + private MethodSignatureParser(GenericDeclaration wrapper, + ClassLoader loader, String signature) + { + super(wrapper, loader, signature); + + if (peekChar() == '<') + { + typeParameters = readFormalTypeParameters(); + } + else + { + typeParameters = new TypeVariable[0]; + } + consume('('); + ArrayList args = new ArrayList(); + while (peekChar() != ')') + { + args.add(readTypeSignature()); + } + argTypes = new Type[args.size()]; + args.toArray(argTypes); + consume(')'); + retType = readTypeSignature(); + ArrayList throwsSigs = new ArrayList(); + while (peekChar() == '^') + { + consume('^'); + if(peekChar() == 'T') + { + throwsSigs.add(readTypeVariableSignature()); + } + else + { + throwsSigs.add(readClassTypeSignature()); + } + } + this.throwsSigs = new Type[throwsSigs.size()]; + throwsSigs.toArray(this.throwsSigs); + end(); + } + + public TypeVariable[] getTypeParameters() + { + TypeImpl.resolve(typeParameters); + return typeParameters; + } + + public Type[] getGenericParameterTypes() + { + TypeImpl.resolve(argTypes); + return argTypes; + } + + public Type getGenericReturnType() + { + retType = TypeImpl.resolve(retType); + return retType; + } + + public Type[] getGenericExceptionTypes() + { + TypeImpl.resolve(throwsSigs); + return throwsSigs; + } + + private Type readTypeSignature() + { + switch (peekChar()) + { + case 'T': + return readTypeVariableSignature(); + case 'L': + return readClassTypeSignature(); + case '[': + return readArrayTypeSignature(); + case 'Z': + consume('Z'); + return boolean.class; + case 'B': + consume('B'); + return byte.class; + case 'S': + consume('S'); + return short.class; + case 'C': + consume('C'); + return char.class; + case 'I': + consume('I'); + return int.class; + case 'F': + consume('F'); + return float.class; + case 'J': + consume('J'); + return long.class; + case 'D': + consume('D'); + return double.class; + case 'V': + consume('V'); + return void.class; + default: + throw new GenericSignatureFormatError(); + } + } +} diff --git a/libjava/classpath/gnu/java/lang/reflect/TypeImpl.java b/libjava/classpath/gnu/java/lang/reflect/TypeImpl.java new file mode 100644 index 00000000000..30906f629dc --- /dev/null +++ b/libjava/classpath/gnu/java/lang/reflect/TypeImpl.java @@ -0,0 +1,63 @@ +/* TypeImpl.java + Copyright (C) 2005 + Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.lang.reflect; + +import java.lang.reflect.Type; + +abstract class TypeImpl implements Type +{ + abstract Type resolve(); + + static void resolve(Type[] types) + { + for (int i = 0; i < types.length; i++) + { + types[i] = resolve(types[i]); + } + } + + static Type resolve(Type type) + { + if (type instanceof TypeImpl) + { + type = ((TypeImpl) type).resolve(); + } + return type; + } +} |
