| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Jesper Steen Møller <jesper@selskabet.org> - Bug 430839 |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.debug.core.model; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.jdt.core.Signature; |
| import org.eclipse.jdt.debug.core.IJavaClassObject; |
| import org.eclipse.jdt.debug.core.IJavaFieldVariable; |
| import org.eclipse.jdt.debug.core.IJavaObject; |
| import org.eclipse.jdt.debug.core.IJavaReferenceType; |
| import org.eclipse.jdt.debug.core.IJavaValue; |
| |
| import com.ibm.icu.text.MessageFormat; |
| import com.sun.jdi.AbsentInformationException; |
| import com.sun.jdi.ArrayType; |
| import com.sun.jdi.ClassLoaderReference; |
| import com.sun.jdi.ClassNotLoadedException; |
| import com.sun.jdi.Field; |
| import com.sun.jdi.ObjectReference; |
| import com.sun.jdi.ReferenceType; |
| import com.sun.jdi.Type; |
| import com.sun.jdi.Value; |
| import com.sun.jdi.VirtualMachine; |
| |
| /** |
| * References a class, interface, or array type. |
| */ |
| public abstract class JDIReferenceType extends JDIType implements |
| IJavaReferenceType { |
| |
| // field names declared in this type |
| private String[] fDeclaredFields = null; |
| // field names declared in this type, super types, implemented interfaces |
| // and super-interfaces |
| private String[] fAllFields = null; |
| |
| /** |
| * Constructs a new reference type in the given target. |
| * |
| * @param target |
| * associated VM |
| * @param type |
| * reference type |
| */ |
| public JDIReferenceType(JDIDebugTarget target, Type type) { |
| super(target, type); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getAvailableStrata() |
| */ |
| @Override |
| public String[] getAvailableStrata() { |
| List<String> strata = getReferenceType().availableStrata(); |
| return strata.toArray(new String[strata.size()]); |
| } |
| |
| /** |
| * Returns the underlying reference type. |
| * |
| * @return the underlying reference type |
| */ |
| protected ReferenceType getReferenceType() { |
| return (ReferenceType) getUnderlyingType(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getDefaultStratum() |
| */ |
| @Override |
| public String getDefaultStratum() throws DebugException { |
| try { |
| return getReferenceType().defaultStratum(); |
| } catch (RuntimeException e) { |
| targetRequestFailed(JDIDebugModelMessages.JDIReferenceType_1, e); |
| } |
| // execution will not reach here |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.jdt.debug.core.IJavaReferenceType#getField(java.lang.String) |
| */ |
| @Override |
| public IJavaFieldVariable getField(String name) throws DebugException { |
| try { |
| ReferenceType type = (ReferenceType) getUnderlyingType(); |
| Field field = type.fieldByName(name); |
| if (field != null && field.isStatic()) { |
| return new JDIFieldVariable(getJavaDebugTarget(), field, type); |
| } |
| } catch (RuntimeException e) { |
| targetRequestFailed( |
| MessageFormat.format( |
| JDIDebugModelMessages.JDIClassType_exception_while_retrieving_field, |
| e.toString(), name), e); |
| } |
| // it is possible to return null |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getClassObject() |
| */ |
| @Override |
| public IJavaClassObject getClassObject() throws DebugException { |
| try { |
| ReferenceType type = (ReferenceType) getUnderlyingType(); |
| return (IJavaClassObject) JDIValue.createValue( |
| getJavaDebugTarget(), type.classObject()); |
| } catch (RuntimeException e) { |
| targetRequestFailed( |
| MessageFormat.format( |
| JDIDebugModelMessages.JDIClassType_exception_while_retrieving_class_object, |
| e.toString()), e); |
| } |
| // execution will not fall through to here, |
| // as #requestFailed will throw an exception |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getAllFieldNames() |
| */ |
| @Override |
| public String[] getAllFieldNames() throws DebugException { |
| if (fAllFields == null) { |
| try { |
| List<Field> fields = ((ReferenceType) getUnderlyingType()).allFields(); |
| fAllFields = new String[fields.size()]; |
| Iterator<Field> iterator = fields.iterator(); |
| int i = 0; |
| while (iterator.hasNext()) { |
| Field field = iterator.next(); |
| fAllFields[i] = field.name(); |
| i++; |
| } |
| } catch (RuntimeException e) { |
| targetRequestFailed(JDIDebugModelMessages.JDIReferenceType_2, e); |
| } |
| } |
| return fAllFields; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.jdt.debug.core.IJavaReferenceType#getDeclaredFieldNames() |
| */ |
| @Override |
| public String[] getDeclaredFieldNames() throws DebugException { |
| if (fDeclaredFields == null) { |
| try { |
| List<Field> fields = ((ReferenceType) getUnderlyingType()).fields(); |
| fDeclaredFields = new String[fields.size()]; |
| Iterator<Field> iterator = fields.iterator(); |
| int i = 0; |
| while (iterator.hasNext()) { |
| Field field = iterator.next(); |
| fDeclaredFields[i] = field.name(); |
| i++; |
| } |
| } catch (RuntimeException e) { |
| targetRequestFailed(JDIDebugModelMessages.JDIReferenceType_3, e); |
| } |
| } |
| return fDeclaredFields; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.jdt.debug.core.IJavaReferenceType#getSourcePaths(java.lang |
| * .String) |
| */ |
| @Override |
| public String[] getSourcePaths(String stratum) throws DebugException { |
| try { |
| List<String> sourcePaths = getReferenceType().sourcePaths(stratum); |
| return sourcePaths |
| .toArray(new String[sourcePaths.size()]); |
| } catch (AbsentInformationException e) { |
| } catch (RuntimeException e) { |
| requestFailed(JDIDebugModelMessages.JDIReferenceType_4, e, |
| DebugException.TARGET_REQUEST_FAILED); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getSourceName() |
| */ |
| @Override |
| public String getSourceName() throws DebugException { |
| try { |
| return getReferenceType().sourceName(); |
| } catch (AbsentInformationException e) { |
| } catch (RuntimeException e) { |
| requestFailed(JDIDebugModelMessages.JDIReferenceType_4, e, |
| DebugException.TARGET_REQUEST_FAILED); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.jdt.debug.core.IJavaReferenceType#getSourceNames(java.lang |
| * .String) |
| */ |
| @Override |
| public String[] getSourceNames(String stratum) throws DebugException { |
| try { |
| List<String> sourceNames = getReferenceType().sourceNames(stratum); |
| return sourceNames |
| .toArray(new String[sourceNames.size()]); |
| } catch (AbsentInformationException e) { |
| } catch (RuntimeException e) { |
| requestFailed(JDIDebugModelMessages.JDIReferenceType_4, e, |
| DebugException.TARGET_REQUEST_FAILED); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getClassLoaderObject() |
| */ |
| @Override |
| public IJavaObject getClassLoaderObject() throws DebugException { |
| try { |
| ReferenceType type = (ReferenceType) getUnderlyingType(); |
| ClassLoaderReference classLoader = type.classLoader(); |
| if (classLoader != null) { |
| return (IJavaObject) JDIValue.createValue(getJavaDebugTarget(), |
| classLoader); |
| } |
| } catch (RuntimeException e) { |
| targetRequestFailed(MessageFormat.format( |
| JDIDebugModelMessages.JDIReferenceType_0, |
| e.toString()), e); |
| } |
| return null; |
| } |
| |
| static public String getGenericName(ReferenceType type) |
| throws DebugException { |
| if (type instanceof ArrayType) { |
| try { |
| Type componentType; |
| componentType = ((ArrayType) type).componentType(); |
| if (componentType instanceof ReferenceType) { |
| return getGenericName((ReferenceType) componentType) + "[]"; //$NON-NLS-1$ |
| } |
| return type.name(); |
| } catch (ClassNotLoadedException e) { |
| // we cannot create the generic name using the component type, |
| // just try to create one with the information |
| } |
| } |
| String signature = type.signature(); |
| StringBuffer res = new StringBuffer(getTypeName(signature)); |
| String genericSignature = type.genericSignature(); |
| if (genericSignature != null) { |
| String[] typeParameters = Signature |
| .getTypeParameters(genericSignature); |
| if (typeParameters.length > 0) { |
| res.append('<').append( |
| Signature.getTypeVariable(typeParameters[0])); |
| for (int i = 1; i < typeParameters.length; i++) { |
| res.append(',').append( |
| Signature.getTypeVariable(typeParameters[i])); |
| } |
| res.append('>'); |
| } |
| } |
| return res.toString(); |
| } |
| |
| /** |
| * Return the name from the given signature. Keep the '$' characters. |
| * |
| * @param genericTypeSignature |
| * the signature to derive the type name from |
| * @return the type name |
| */ |
| public static String getTypeName(String genericTypeSignature) { |
| int arrayDimension = 0; |
| while (genericTypeSignature.charAt(arrayDimension) == '[') { |
| arrayDimension++; |
| } |
| int parameterStart = genericTypeSignature.indexOf('<'); |
| StringBuffer name = new StringBuffer(); |
| if (parameterStart < 0) { |
| name.append(genericTypeSignature.substring(arrayDimension + 1, |
| genericTypeSignature.length() - 1).replace('/', '.')); |
| } else { |
| if (parameterStart != 0) { |
| name.append(genericTypeSignature.substring(arrayDimension + 1, |
| parameterStart).replace('/', '.')); |
| } |
| try { |
| String sig = Signature.toString(genericTypeSignature) |
| .substring( |
| Math.max(parameterStart - 1, 0) |
| - arrayDimension); |
| name.append(sig.replace('/', '.')); |
| } catch (IllegalArgumentException iae) { |
| // do nothing |
| name.append(genericTypeSignature); |
| } |
| } |
| for (int i = 0; i < arrayDimension; i++) { |
| name.append("[]"); //$NON-NLS-1$ |
| } |
| return name.toString(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getGenericSignature() |
| */ |
| @Override |
| public String getGenericSignature() throws DebugException { |
| return getReferenceType().genericSignature(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getInstances(long) |
| */ |
| @Override |
| public IJavaObject[] getInstances(long max) throws DebugException { |
| try { |
| List<ObjectReference> list = getReferenceType().instances(max); |
| IJavaObject[] instances = new IJavaObject[list.size()]; |
| for (int i = 0; i < instances.length; i++) { |
| instances[i] = (IJavaObject) JDIValue.createValue( |
| getJavaDebugTarget(), list.get(i)); |
| } |
| return instances; |
| } catch (RuntimeException e) { |
| targetRequestFailed(JDIDebugModelMessages.JDIReferenceType_5, e); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jdt.debug.core.IJavaReferenceType#getInstanceCount() |
| */ |
| @Override |
| public long getInstanceCount() throws DebugException { |
| JDIDebugTarget target = getJavaDebugTarget(); |
| if (target.supportsInstanceRetrieval()) { |
| Type type = getUnderlyingType(); |
| if(type instanceof ReferenceType) { |
| ArrayList<ReferenceType> list = new ArrayList<>(2); |
| list.add((ReferenceType) type); |
| VirtualMachine vm = getVM(); |
| try { |
| long[] counts = vm.instanceCounts(list); |
| return counts[0]; |
| } catch (RuntimeException e) { |
| targetRequestFailed(JDIDebugModelMessages.JDIReferenceType_5, e); |
| } |
| } |
| } |
| return -1; |
| } |
| |
| /** |
| * Utility method to convert argument array to an argument list. |
| * |
| * @param args |
| * array of arguments, as <code>IJavaValue</code>s, possibly |
| * <code>null</code> or empty |
| * @return a list of underlying <code>Value</code>s |
| */ |
| protected List<Value> convertArguments(IJavaValue[] args) { |
| List<Value> arguments = null; |
| if (args == null) { |
| arguments = Collections.EMPTY_LIST; |
| } else { |
| arguments = new ArrayList<>(args.length); |
| for (IJavaValue arg : args) { |
| arguments.add(((JDIValue) arg).getUnderlyingValue()); |
| } |
| } |
| return arguments; |
| } |
| |
| } |