Initial revision

git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@116 379699f6-c40d-0410-875b-85095c16579e

jode/jode/flow/DescriptionBlock.java

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+/* 
+ * DescriptionBlock  (c) 1998 Jochen Hoenicke
+ *
+ * You may distribute under the terms of the GNU General Public License.
+ *
+ * IN NO EVENT SHALL JOCHEN HOENICKE BE LIABLE TO ANY PARTY FOR DIRECT,
+ * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
+ * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF JOCHEN HOENICKE 
+ * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * JOCHEN HOENICKE SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
+ * BASIS, AND JOCHEN HOENICKE HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
+ * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * $Id$
+ */
+
+package jode.flow;
+import jode.TabbedPrintWriter;
+
+/**
+ * This is a block which contains a comment/description of what went 
+ * wrong.  Use this, if you want to tell the user, that a construct
+ * doesn't have the exspected form.
+ *
+ * @author Jochen Hoenicke
+ */
+public class DescriptionBlock extends StructuredBlock {
+    String description;
+
+    public DescriptionBlock(String description) {
+        this.description = description;
+    }
+
+    /**
+     * Tells if this block is empty and only changes control flow.
+     */
+    public boolean isEmpty() {
+        return true;
+    }
+
+    public void dumpInstruction(TabbedPrintWriter writer) 
+	throws java.io.IOException
+    {
+        writer.println(description);
+    }
+}

jode/jode/type/UnfoundClassType.java

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+/* UnfoundClassType Copyright (C) 1997-1998 Jochen Hoenicke.
+ *
+ * This program 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.
+ *
+ * This program 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 this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ */
+package jode;
+import java.util.Vector;
+import java.util.Stack;
+
+/**
+ * This class represents a type aproximation, consisting of multiple
+ * interfaces and a class type.<p>
+ *
+ * If this is the bottom boundary, this specifies, which class our
+ * type must extend and which interfaces it must implement.
+ *
+ * If this is the top boundary, this gives all interfaces and classes
+ * that may extend the type.  I.e. the type may be one of the
+ * interfaces or the class type or any of their super types.
+ *
+ * @author Jochen Hoenicke */
+public class UnfoundClassType extends Type {
+
+    String clazzName;
+
+    public UnfoundClassType(String clazzName) {
+        super(TC_UCLASS);
+        this.clazzName = clazzName;
+    }
+
+    /**
+     * Create the type corresponding to the range from bottomType to
+     * this.  Checks if the given type range may be not empty.  This
+     * means, that bottom.clazz is extended by this.clazz and that all
+     * interfaces in bottom are implemented by an interface or by
+     * clazz.
+     * @param bottom the start point of the range
+     * @return the range type, or tError if range is empty.  
+     */
+    public Type createRangeType(Type bottomType) {
+
+        /* Unknown classes are only compatible to tObject and themself.
+         */
+
+        if (bottomType == tUnknown || bottomType == tObject)
+            return  tRange(tObject, this);
+        
+        if (!bottomType.equals(this))
+            return tError;
+
+        return this;
+    }
+
+    /**
+     * Returns the specialized type of this and type.
+     * We have two classes and multiple interfaces.  The result 
+     * should be the object that extends both objects
+     * and the union of all interfaces.
+     */
+    public Type getSpecializedType(Type type) {
+        return (type.typecode == TC_UNKNOWN 
+                || type == tObject || type.equals(this)) ? this : tError;
+    }
+
+    /**
+     * Returns the generalized type of this and type.  We have two
+     * classes and multiple interfaces.  The result should be the
+     * object that is the the super class of both objects and all
+     * interfaces, that one class or interface of each type 
+     * implements.  */
+    public Type getGeneralizedType(Type type) {
+        int code = type.typecode;
+        if (code == TC_UNKNOWN || type.equals(this))
+            return this;
+        if (code == TC_ARRAY || code == TC_CLASS || code == TC_UCLASS)
+            return tObject;
+        return tError;
+    }
+
+    /**
+     * Marks this type as used, so that the class is imported.
+     */
+    public void useType() {
+        env.useClass(clazzName);
+    }
+
+    public String toString()
+    {
+        return env.classString(clazzName);
+    }
+
+    public boolean isClassType() {
+        return true;
+    }
+
+    public boolean equals(Object o) {
+        return o == this
+            || (o instanceof UnfoundClassType
+                && ((UnfoundClassType)o).clazzName.equals(clazzName));
+    }
+}