import java.io.*;
+/** Class representing a field in a generated classfile
+ @see ClassGen#addField */
public class FieldGen implements CGConst {
private final CPGen cp;
private final String name;
private final Type type;
private final int flags;
- private final AttrGen attrs;
+ private final ClassGen.AttrGen attrs;
- FieldGen(ClassGen owner, String name,Type type, int flags) {
+ private Object constantValue;
+
+ public String toString() { StringBuffer sb = new StringBuffer(); toString(sb); return sb.toString(); }
+ public void toString(StringBuffer sb) {
+ sb.append(ClassGen.flagsToString(flags));
+ sb.append(type);
+ sb.append(" ");
+ sb.append(name);
+ sb.append(";");
+ // FIXME: attrs
+ }
+
+ FieldGen(CPGen cp, DataInput in) throws IOException {
+ this.cp = cp;
+ flags = in.readShort();
+ name = cp.getUtf8ByIndex(in.readShort());
+ type = cp.getType(in.readShort());
+ attrs = new ClassGen.AttrGen(cp, in);
+ }
+
+ FieldGen(ClassGen owner, String name, Type type, int flags) {
if((flags & ~(ACC_PUBLIC|ACC_PRIVATE|ACC_PROTECTED|ACC_VOLATILE|ACC_TRANSIENT|ACC_STATIC|ACC_FINAL)) != 0)
throw new IllegalArgumentException("invalid flags");
this.cp = owner.cp;
this.name = name;
this.type = type;
this.flags = flags;
- this.attrs = new AttrGen(cp);
+ this.attrs = new ClassGen.AttrGen(cp);
cp.addUtf8(name);
cp.addUtf8(type.getDescriptor());
}
- public void dump(DataOutput o) throws IOException {
+ /** Sets the ContantValue attribute for this field.
+ @param val The value to set this field to. Must be an Integer, Long, Float, Double, or String */
+ public void setConstantValue(Object val) {
+ if((flags & ACC_STATIC) == 0) throw new IllegalStateException("field does not have the ACC_STATIC bit set");
+ constantValue = val;
+ }
+
+ void finish() {
+ if(constantValue != null && !attrs.contains("ConstantValue"))
+ attrs.add("ConstantValue", cp.add(constantValue));
+ }
+
+ void dump(DataOutput o) throws IOException {
o.writeShort(flags);
o.writeShort(cp.getUtf8Index(name));
o.writeShort(cp.getUtf8Index(type.getDescriptor()));