org.eclipse.jdt.debug/jdi/org/eclipse/jdi/internal/TypeImpl.java - jdt/eclipse.jdt.debug - Git at Google

 package org.eclipse.jdi.internal;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved.
  */

 import com.sun.jdi.ClassLoaderReference;
 import com.sun.jdi.ClassNotLoadedException;
 import com.sun.jdi.ClassNotPreparedException;
 import com.sun.jdi.Type;
 import com.sun.jdi.Value;

 /**
  * this class implements the corresponding interfaces
  * declared by the JDI specification. See the com.sun.jdi package
  * for more information.
  *
  */
 public abstract class TypeImpl extends AccessibleImpl implements Type {
 	/** Text representation of this type. */
 	protected String fName = null;
 	/** JNI-style signature for this type. */
 	protected String fSignature = null;

 	/**
 	 * Creates new instance, used for REFERENCE types.
 	 */
 	protected TypeImpl(String description, VirtualMachineImpl vmImpl) {
 		super(description, vmImpl);
 	}

 	/**
 	 * Creates new instance, used for PRIMITIVE types or VOID.
 	 */
 	protected TypeImpl(String description, VirtualMachineImpl vmImpl, String name, String signature) {
 		super(description, vmImpl);
 		setName(name);
 		setSignature(signature);
 	}

 	/**
 	 * @return Returns new instance based on signature and (if it is a ReferenceType) classLoader.
 	 * @throws ClassNotLoadedException when type is a ReferenceType and it has not been loaded
 	 * by the specified class loader.
 	 */
 	public static TypeImpl create(VirtualMachineImpl vmImpl, String signature, ClassLoaderReference classLoader) throws ClassNotLoadedException {
 		// For void values, a VoidType is always returned.
 		if (TypeImpl.isVoidSignature(signature))
 			return new VoidTypeImpl(vmImpl);

 		// For primitive variables, an appropriate PrimitiveType is always returned.
 		if (TypeImpl.isPrimitiveSignature(signature))
 			return PrimitiveTypeImpl.create(vmImpl, signature);

 		// For object variables, the appropriate ReferenceType is returned if it has
 		// been loaded through the enclosing type's class loader.
 		return ReferenceTypeImpl.create(vmImpl, signature, classLoader);
 	}

 	/**
 	 * Assigns name.
 	 */
 	public void setName(String name) {
 		fName = name;
 	}

 	/**
 	 * Assigns signature.
 	 */
 	public void setSignature(String signature) {
 		fSignature = signature;
 	}

 	/**
 	 * @return Returns description of Mirror object.
 	 */
 	public String toString() {
 		try {
 			return name();
 		} catch (ClassNotPreparedException e) {
 			return JDIMessages.getString("TypeImpl.(Unloaded_Type)_1"); //$NON-NLS-1$
 		} catch (Exception e) {
 			return fDescription;
 		}
 	}

 	/**
 	 * @return Create a null value instance of the type.
 	 */
 	public abstract Value createNullValue();

 	/**
 	 * @return Returns text representation of this type.
 	 */
 	public String name() {
 		return fName;
 	}

 	/**
 	 * @return JNI-style signature for this type.
 	 */
 	public String signature() {
 		return fSignature;
 	}

 	/**
 	 * @return Returns modifier bits.
 	 */
 	public abstract int modifiers();

 	/**
 	 * @returns Returns true if signature is a class signature.
 	 */
 	public static boolean isClassSignature(String signature) {
 		return signature.charAt(0) == 'L';
 	}

 	/**
 	 * @returns Returns true if signature is an array signature.
 	 */
 	public static boolean isArraySignature(String signature) {
 		return signature.charAt(0) == '[';
 	}

 	/**
 	 * @returns Returns true if signature is an primitive signature.
 	 */
 	public static boolean isPrimitiveSignature(String signature) {
 		switch (signature.charAt(0)) {
 			case 'Z':
 			case 'B':
 			case 'C':
 			case 'S':
 			case 'I':
 			case 'J':
 			case 'F':
 			case 'D':
 				return true;
 		}
 		return false;
 	}

 	/**
 	 * @returns Returns true if signature is void signature.
 	 */
 	public static boolean isVoidSignature(String signature) {
 		return (signature.charAt(0) == 'V');
 	}

 	/**
 	 * Converts a class name to a JNI signature.
 	 */
 	public static String classNameToSignature(String qualifiedName) {
 		// L<classname>;  : fully-qualified-class
 		/* JNI signature examples:
 		 * int[][]             -> [[I
 		 * long[]              -> [J
 		 * java.lang.String    -> Ljava/lang/String;
 		 * java.lang.String[]  -> [Ljava/lang/String;
 		 */
 		StringBuffer signature= new StringBuffer();

 		int firstBrace= qualifiedName.indexOf('[');
 		if (firstBrace < 0) {
 			// Not an array type. Must be class type.
 			signature.append('L');
 			signature.append(qualifiedName.replace('.','/'));
 			signature.append(';');
 			return signature.toString();
 		}

 		int index= 0;
 		while ((index= (qualifiedName.indexOf('[', index) + 1)) > 0) {
 			signature.append('[');
 		}

 		String name= qualifiedName.substring(0, firstBrace);
 		switch (name.charAt(0)) {
 			// Check for primitive array type
 			case 'b':
 				if (name.equals("byte")) { //$NON-NLS-1$
 					signature.append('B');
 					return signature.toString();
 				} else if (name.equals("boolean")) { //$NON-NLS-1$
 					signature.append('Z');
 					return signature.toString();
 				}
 				break;
 			case 'i':
 				if (name.equals("int")) { //$NON-NLS-1$
 					signature.append('I');
 					return signature.toString();
 				}
 				break;
 			case 'd':
 				if (name.equals("double")) { //$NON-NLS-1$
 					signature.append('D');
 					return signature.toString();
 				}
 				break;
 			case 's':
 				if (name.equals("short")) { //$NON-NLS-1$
 					signature.append('S');
 					return signature.toString();
 				}
 				break;
 			case 'c':
 				if (name.equals("char")) { //$NON-NLS-1$
 					signature.append('C');
 					return signature.toString();
 				}
 				break;
 			case 'l':
 				if (name.equals("long")) { //$NON-NLS-1$
 					signature.append('J');
 					return signature.toString();
 				}
 				break;
 			case 'f':
 				if (name.equals("float")) { //$NON-NLS-1$
 					signature.append('F');
 					return signature.toString();
 				}
 				break;
 		}
 		// Class type array
 		signature.append('L');
 		signature.append(name.replace('.','/'));
 		signature.append(';');
 		return signature.toString();
 	}

 	/**
 	 * Converts a JNI class signature to a name.
 	 */
 	public static String classSignatureToName(String signature) {
 		// L<classname>;  : fully-qualified-class
 		return signature.substring(1, signature.length() - 1).replace('/','.');
 	}

 	/**
 	 * Converts a JNI array signature to a name.
 	 */
 	public static String arraySignatureToName(String signature) {
 		// [<type> : array of type <type>
 		if (signature.indexOf('[') < 0) {
 			return signature;
 		}
 		StringBuffer name= new StringBuffer();
 		String type= signature.substring(signature.lastIndexOf('[') + 1);
 		if (type.length() == 1 && isPrimitiveSignature(type)) {
 			name.append(getPrimitiveSignatureToName(type.charAt(0)));
 		} else {
 			name.append(classSignatureToName(type));
 		}
 		int index= 0;
 		while ((index= (signature.indexOf('[', index) + 1)) > 0) {
 			name.append('[').append(']');
 		}
 		return signatureToName(signature.substring(1)) + "[]"; //$NON-NLS-1$
 	}

 	/**
 	 * @returns Returns Type Name, converted from a JNI signature.
 	 */
 	public static String signatureToName(String signature) {
 		// See JNI 1.1 Specification, Table 3-2 Java VM Type Signatures.
 		String primitive= getPrimitiveSignatureToName(signature.charAt(0));
 		if (primitive != null) {
 			return primitive;
 		}
 		switch (signature.charAt(0)) {
 			case 'V':
 				return "void"; //$NON-NLS-1$
 			case 'L':
 				return classSignatureToName(signature);
 			case '[':
 				return arraySignatureToName(signature);
 			case '(':
 				throw new InternalError(JDIMessages.getString("TypeImpl.Can__t_convert_method_signature_to_name_2")); //$NON-NLS-1$
 		}
 		throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_signature____3") + signature + JDIMessages.getString("TypeImpl.__4")); //$NON-NLS-1$ //$NON-NLS-2$
 	}

 	private static String getPrimitiveSignatureToName(char signature) {
 		switch (signature) {
 			case 'Z':
 				return "boolean"; //$NON-NLS-1$
 			case 'B':
 				return "byte"; //$NON-NLS-1$
 			case 'C':
 				return "char"; //$NON-NLS-1$
 			case 'S':
 				return "short"; //$NON-NLS-1$
 			case 'I':
 				return "int"; //$NON-NLS-1$
 			case 'J':
 				return "long"; //$NON-NLS-1$
 			case 'F':
 				return "float"; //$NON-NLS-1$
 			case 'D':
 				return "double"; //$NON-NLS-1$
 			default:
 				return null;
 		}
 	}

 	/**
 	 * @returns Returns length of the Class type-string in the signature at the given index.
 	 */
 	private static int signatureClassTypeStringLength(String signature, int index) {
 		int endPos = signature.indexOf(';', index + 1);
 		if (endPos < 0)
 			throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_Class_Type_signature_5")); //$NON-NLS-1$

 		return endPos - index + 1;
 	}

 	/**
 	 * @returns Returns length of the first type-string in the signature at the given index.
 	 */
 	public static int signatureTypeStringLength(String signature, int index) {
 		switch (signature.charAt(index)) {
 			case 'Z':
 			case 'B':
 			case 'C':
 			case 'S':
 			case 'I':
 			case 'J':
 			case 'F':
 			case 'D':
 			case 'V':
 				return 1;
 			case 'L':
 				return signatureClassTypeStringLength(signature, index);
 			case '[':
 				return 1 + signatureTypeStringLength(signature, index + 1);
 			case '(':
 				throw new InternalError(JDIMessages.getString("TypeImpl.Can__t_covert_method_signature_to_name_6")); //$NON-NLS-1$
 		}
 		throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_signature____7") + signature + JDIMessages.getString("TypeImpl.__8")); //$NON-NLS-1$ //$NON-NLS-2$
 	}

 	/**
 	 * @returns Returns Jdwp Tag, converted from a JNI signature.
 	 */
 	public static byte signatureToTag(String signature) {
 		switch (signature.charAt(0)) {
 			case 'Z':
 				return BooleanValueImpl.tag;
 			case 'B':
 				return ByteValueImpl.tag;
 			case 'C':
 				return CharValueImpl.tag;
 			case 'S':
 				return ShortValueImpl.tag;
 			case 'I':
 				return IntegerValueImpl.tag;
 			case 'J':
 				return LongValueImpl.tag;
 			case 'F':
 				return FloatValueImpl.tag;
 			case 'D':
 				return DoubleValueImpl.tag;
 			case 'V':
 				return VoidValueImpl.tag;
 			case 'L':
 				return ObjectReferenceImpl.tag;
 			case '[':
 				return ArrayReferenceImpl.tag;
 			case '(':
 				throw new InternalError(JDIMessages.getString("TypeImpl.Can__t_covert_method_signature_to_tag___9") + signature); //$NON-NLS-1$
 		}
 		throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_signature____10") + signature + JDIMessages.getString("TypeImpl.__11")); //$NON-NLS-1$ //$NON-NLS-2$
 	}
 }
	package org.eclipse.jdi.internal;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved.
	*/

	import com.sun.jdi.ClassLoaderReference;
	import com.sun.jdi.ClassNotLoadedException;
	import com.sun.jdi.ClassNotPreparedException;
	import com.sun.jdi.Type;
	import com.sun.jdi.Value;

	/**
	* this class implements the corresponding interfaces
	* declared by the JDI specification. See the com.sun.jdi package
	* for more information.
	*
	*/
	public abstract class TypeImpl extends AccessibleImpl implements Type {
	/** Text representation of this type. */
	protected String fName = null;
	/** JNI-style signature for this type. */
	protected String fSignature = null;

	/**
	* Creates new instance, used for REFERENCE types.
	*/
	protected TypeImpl(String description, VirtualMachineImpl vmImpl) {
	super(description, vmImpl);
	}

	/**
	* Creates new instance, used for PRIMITIVE types or VOID.
	*/
	protected TypeImpl(String description, VirtualMachineImpl vmImpl, String name, String signature) {
	super(description, vmImpl);
	setName(name);
	setSignature(signature);
	}

	/**
	* @return Returns new instance based on signature and (if it is a ReferenceType) classLoader.
	* @throws ClassNotLoadedException when type is a ReferenceType and it has not been loaded
	* by the specified class loader.
	*/
	public static TypeImpl create(VirtualMachineImpl vmImpl, String signature, ClassLoaderReference classLoader) throws ClassNotLoadedException {
	// For void values, a VoidType is always returned.
	if (TypeImpl.isVoidSignature(signature))
	return new VoidTypeImpl(vmImpl);

	// For primitive variables, an appropriate PrimitiveType is always returned.
	if (TypeImpl.isPrimitiveSignature(signature))
	return PrimitiveTypeImpl.create(vmImpl, signature);

	// For object variables, the appropriate ReferenceType is returned if it has
	// been loaded through the enclosing type's class loader.
	return ReferenceTypeImpl.create(vmImpl, signature, classLoader);
	}

	/**
	* Assigns name.
	*/
	public void setName(String name) {
	fName = name;
	}

	/**
	* Assigns signature.
	*/
	public void setSignature(String signature) {
	fSignature = signature;
	}

	/**
	* @return Returns description of Mirror object.
	*/
	public String toString() {
	try {
	return name();
	} catch (ClassNotPreparedException e) {
	return JDIMessages.getString("TypeImpl.(Unloaded_Type)_1"); //$NON-NLS-1$
	} catch (Exception e) {
	return fDescription;
	}
	}

	/**
	* @return Create a null value instance of the type.
	*/
	public abstract Value createNullValue();

	/**
	* @return Returns text representation of this type.
	*/
	public String name() {
	return fName;
	}

	/**
	* @return JNI-style signature for this type.
	*/
	public String signature() {
	return fSignature;
	}

	/**
	* @return Returns modifier bits.
	*/
	public abstract int modifiers();

	/**
	* @returns Returns true if signature is a class signature.
	*/
	public static boolean isClassSignature(String signature) {
	return signature.charAt(0) == 'L';
	}

	/**
	* @returns Returns true if signature is an array signature.
	*/
	public static boolean isArraySignature(String signature) {
	return signature.charAt(0) == '[';
	}

	/**
	* @returns Returns true if signature is an primitive signature.
	*/
	public static boolean isPrimitiveSignature(String signature) {
	switch (signature.charAt(0)) {
	case 'Z':
	case 'B':
	case 'C':
	case 'S':
	case 'I':
	case 'J':
	case 'F':
	case 'D':
	return true;
	}
	return false;
	}

	/**
	* @returns Returns true if signature is void signature.
	*/
	public static boolean isVoidSignature(String signature) {
	return (signature.charAt(0) == 'V');
	}

	/**
	* Converts a class name to a JNI signature.
	*/
	public static String classNameToSignature(String qualifiedName) {
	// L<classname>; : fully-qualified-class
	/* JNI signature examples:
	* int[][] -> [[I
	* long[] -> [J
	* java.lang.String -> Ljava/lang/String;
	* java.lang.String[] -> [Ljava/lang/String;
	*/
	StringBuffer signature= new StringBuffer();

	int firstBrace= qualifiedName.indexOf('[');
	if (firstBrace < 0) {
	// Not an array type. Must be class type.
	signature.append('L');
	signature.append(qualifiedName.replace('.','/'));
	signature.append(';');
	return signature.toString();
	}

	int index= 0;
	while ((index= (qualifiedName.indexOf('[', index) + 1)) > 0) {
	signature.append('[');
	}

	String name= qualifiedName.substring(0, firstBrace);
	switch (name.charAt(0)) {
	// Check for primitive array type
	case 'b':
	if (name.equals("byte")) { //$NON-NLS-1$
	signature.append('B');
	return signature.toString();
	} else if (name.equals("boolean")) { //$NON-NLS-1$
	signature.append('Z');
	return signature.toString();
	}
	break;
	case 'i':
	if (name.equals("int")) { //$NON-NLS-1$
	signature.append('I');
	return signature.toString();
	}
	break;
	case 'd':
	if (name.equals("double")) { //$NON-NLS-1$
	signature.append('D');
	return signature.toString();
	}
	break;
	case 's':
	if (name.equals("short")) { //$NON-NLS-1$
	signature.append('S');
	return signature.toString();
	}
	break;
	case 'c':
	if (name.equals("char")) { //$NON-NLS-1$
	signature.append('C');
	return signature.toString();
	}
	break;
	case 'l':
	if (name.equals("long")) { //$NON-NLS-1$
	signature.append('J');
	return signature.toString();
	}
	break;
	case 'f':
	if (name.equals("float")) { //$NON-NLS-1$
	signature.append('F');
	return signature.toString();
	}
	break;
	}
	// Class type array
	signature.append('L');
	signature.append(name.replace('.','/'));
	signature.append(';');
	return signature.toString();
	}

	/**
	* Converts a JNI class signature to a name.
	*/
	public static String classSignatureToName(String signature) {
	// L<classname>; : fully-qualified-class
	return signature.substring(1, signature.length() - 1).replace('/','.');
	}

	/**
	* Converts a JNI array signature to a name.
	*/
	public static String arraySignatureToName(String signature) {
	// [<type> : array of type <type>
	if (signature.indexOf('[') < 0) {
	return signature;
	}
	StringBuffer name= new StringBuffer();
	String type= signature.substring(signature.lastIndexOf('[') + 1);
	if (type.length() == 1 && isPrimitiveSignature(type)) {
	name.append(getPrimitiveSignatureToName(type.charAt(0)));
	} else {
	name.append(classSignatureToName(type));
	}
	int index= 0;
	while ((index= (signature.indexOf('[', index) + 1)) > 0) {
	name.append('[').append(']');
	}
	return signatureToName(signature.substring(1)) + "[]"; //$NON-NLS-1$
	}

	/**
	* @returns Returns Type Name, converted from a JNI signature.
	*/
	public static String signatureToName(String signature) {
	// See JNI 1.1 Specification, Table 3-2 Java VM Type Signatures.
	String primitive= getPrimitiveSignatureToName(signature.charAt(0));
	if (primitive != null) {
	return primitive;
	}
	switch (signature.charAt(0)) {
	case 'V':
	return "void"; //$NON-NLS-1$
	case 'L':
	return classSignatureToName(signature);
	case '[':
	return arraySignatureToName(signature);
	case '(':
	throw new InternalError(JDIMessages.getString("TypeImpl.Can__t_convert_method_signature_to_name_2")); //$NON-NLS-1$
	}
	throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_signature____3") + signature + JDIMessages.getString("TypeImpl.__4")); //$NON-NLS-1$ //$NON-NLS-2$
	}

	private static String getPrimitiveSignatureToName(char signature) {
	switch (signature) {
	case 'Z':
	return "boolean"; //$NON-NLS-1$
	case 'B':
	return "byte"; //$NON-NLS-1$
	case 'C':
	return "char"; //$NON-NLS-1$
	case 'S':
	return "short"; //$NON-NLS-1$
	case 'I':
	return "int"; //$NON-NLS-1$
	case 'J':
	return "long"; //$NON-NLS-1$
	case 'F':
	return "float"; //$NON-NLS-1$
	case 'D':
	return "double"; //$NON-NLS-1$
	default:
	return null;
	}
	}

	/**
	* @returns Returns length of the Class type-string in the signature at the given index.
	*/
	private static int signatureClassTypeStringLength(String signature, int index) {
	int endPos = signature.indexOf(';', index + 1);
	if (endPos < 0)
	throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_Class_Type_signature_5")); //$NON-NLS-1$

	return endPos - index + 1;
	}

	/**
	* @returns Returns length of the first type-string in the signature at the given index.
	*/
	public static int signatureTypeStringLength(String signature, int index) {
	switch (signature.charAt(index)) {
	case 'Z':
	case 'B':
	case 'C':
	case 'S':
	case 'I':
	case 'J':
	case 'F':
	case 'D':
	case 'V':
	return 1;
	case 'L':
	return signatureClassTypeStringLength(signature, index);
	case '[':
	return 1 + signatureTypeStringLength(signature, index + 1);
	case '(':
	throw new InternalError(JDIMessages.getString("TypeImpl.Can__t_covert_method_signature_to_name_6")); //$NON-NLS-1$
	}
	throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_signature____7") + signature + JDIMessages.getString("TypeImpl.__8")); //$NON-NLS-1$ //$NON-NLS-2$
	}

	/**
	* @returns Returns Jdwp Tag, converted from a JNI signature.
	*/
	public static byte signatureToTag(String signature) {
	switch (signature.charAt(0)) {
	case 'Z':
	return BooleanValueImpl.tag;
	case 'B':
	return ByteValueImpl.tag;
	case 'C':
	return CharValueImpl.tag;
	case 'S':
	return ShortValueImpl.tag;
	case 'I':
	return IntegerValueImpl.tag;
	case 'J':
	return LongValueImpl.tag;
	case 'F':
	return FloatValueImpl.tag;
	case 'D':
	return DoubleValueImpl.tag;
	case 'V':
	return VoidValueImpl.tag;
	case 'L':
	return ObjectReferenceImpl.tag;
	case '[':
	return ArrayReferenceImpl.tag;
	case '(':
	throw new InternalError(JDIMessages.getString("TypeImpl.Can__t_covert_method_signature_to_tag___9") + signature); //$NON-NLS-1$
	}
	throw new InternalError(JDIMessages.getString("TypeImpl.Invalid_signature____10") + signature + JDIMessages.getString("TypeImpl.__11")); //$NON-NLS-1$ //$NON-NLS-2$
	}
	}