first commit

jasmin/jasmin-2.4/src/jas/ExceptAttr.java

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+/**
+ * This attribute is associated with a method, and indicates
+ * the set of exceptions (as classCP items) that can be thrown
+ * by the method.
+ *
+ * @author $Author: jonmeyerny $
+ * @version $Revision: 1.1 $
+ */
+
+package jas;
+
+import java.io.*;
+import java.util.*;
+
+public class ExceptAttr
+{
+  static final CP attr = new AsciiCP("Exceptions");
+
+  Vector cps;
+
+  public ExceptAttr() { cps = new Vector(); }
+  /**
+   * @param cp Exception class to be added to attribute. This is
+   * typically a ClassCP
+   */
+  public void addException(CP cp)
+  { cps.addElement(cp); }
+
+  void resolve(ClassEnv e)
+  {
+    e.addCPItem(attr);
+    for (Enumeration en = cps.elements(); en.hasMoreElements();)
+      { e.addCPItem((CP)(en.nextElement())); }
+  }
+
+  void write(ClassEnv e, DataOutputStream out)
+    throws IOException, jasError
+  {
+    out.writeShort(e.getCPIndex(attr));
+    out.writeInt(cps.size()*2 + 2);
+    out.writeShort(cps.size());
+    for (Enumeration en = cps.elements(); en.hasMoreElements();)
+      { out.writeShort(e.getCPIndex((CP)(en.nextElement()))); }
+  }
+}