/** A class representing a method in a generated classfile
@see ClassFile#addMethod */
-public class MethodGen implements CGConst {
+public class MethodGen extends Type.Class.Method.Body {
private final static boolean EMIT_NOPS = false;
private static final int NO_CODE = -1;
public final Type.Class.Method method;
- private final int flags;
- private final ClassFile.AttrGen attrs;
private final ClassFile.AttrGen codeAttrs;
private final Vector exnTable = new Vector();
private final Hashtable thrownExceptions = new Hashtable();
- private int maxStack = 16;
- private int maxLocals;
+ int maxStack = 16;
+ int maxLocals;
private int size;
private int capacity;
// Constructors //////////////////////////////////////////////////////////////////////////////
MethodGen(Type.Class.Method method, int flags) {
- if ((flags & ~VALID_METHOD_FLAGS) != 0) throw new IllegalArgumentException("invalid flags");
+ method.super(flags, new ClassFile.AttrGen());
this.method = method;
- this.flags = flags;
-
- attrs = new ClassFile.AttrGen();
codeAttrs = new ClassFile.AttrGen();
-
- if (((flags & INTERFACE) != 0) || (flags & (ABSTRACT|NATIVE)) != 0) size = capacity = -1;
-
+ if (!isConcrete()) size = capacity = -1;
maxLocals = Math.max(method.getNumArgs() + (flags&STATIC)==0 ? 1 : 0, 4);
}
MethodGen(Type.Class c, DataInput in, ConstantPool cp) throws IOException {
- this.flags = in.readShort();
- if ((flags & ~VALID_METHOD_FLAGS) != 0) throw new ClassFile.ClassReadExn("invalid flags");
- String name = cp.getUtf8KeyByIndex(in.readShort());
- this.method = c.method(name+cp.getUtf8KeyByIndex(in.readShort()));
- this.attrs = new ClassFile.AttrGen(in,cp);
+ this(in.readShort(), cp.getUtf8KeyByIndex(in.readShort()), c, in, cp); }
+
+ private MethodGen(short flags, String name, Type.Class c, DataInput in, ConstantPool cp) throws IOException {
+ this(flags, name, c.method(name,cp.getUtf8KeyByIndex(in.readShort())), c, in, cp); }
+ private MethodGen(short flags, String name, Type.Class.Method m,
+ Type.Class c, DataInput in, ConstantPool cp) throws IOException {
+ m.super(flags, new ClassFile.AttrGen(in,cp));
+ this.method = m;
- if ((flags & (NATIVE|ABSTRACT))==0) {
+ if (isConcrete()) {
byte[] codeAttr = (byte[]) attrs.get("Code");
if (codeAttr == null) throw new ClassFile.ClassReadExn("code attr expected");
DataInputStream ci = new DataInputStream(new ByteArrayInputStream(codeAttr));
break;
}
case MULTIANEWARRAY:
- arg = new MultiANewArray((Type.Class)cp.getKeyByIndex(in.readUnsignedShort()),in.readUnsignedByte());
+ arg = new MultiANewArray((Type.Array)cp.getKeyByIndex(in.readUnsignedShort()),in.readUnsignedByte());
break;
case INVOKEINTERFACE: {
ConstantPool.Ent ent = cp.getByIndex(in.readUnsignedShort());
// Accessors //////////////////////////////////////////////////////////////////////////////
+ public int getFlags() { return flags; }
+ public Hashtable getThrownExceptions() { return thrownExceptions; }
+
/** Returns the size (in instructions) of this method
@return The size of the method (in instructions)
*/
}
public static class MultiANewArray {
- public Type.Class type;
+ public Type.Array type;
public int dims;
- public MultiANewArray(Type.Class type, int dims) { this.type = type; this.dims = dims; }
+ public MultiANewArray(Type.Array type, int dims) { this.type = type; this.dims = dims; }
}
public static class Wide {
*/
void finish(ConstantPool cp) {
cp.addUtf8(method.name);
- cp.addUtf8(method.getDescriptor());
+ cp.addUtf8(method.getTypeDescriptor());
for(Enumeration e = thrownExceptions.keys();e.hasMoreElements();)
cp.add(e.nextElement());
o.writeShort(flags);
o.writeShort(cp.getUtf8Index(method.name));
- o.writeShort(cp.getUtf8Index(method.getDescriptor()));
+ o.writeShort(cp.getUtf8Index(method.getTypeDescriptor()));
attrs.dump(o,cp);
}
// Debugging //////////////////////////////////////////////////////////////////////////////
- public void debugToString(StringBuffer sb, String constructorName) {
+ public void debugBodyToString(StringBuffer sb) {
// This is intentionally a local variable so it can be removed by gcclass
final String[] OP_NAMES = new String[]{
"nop", "aconst_null", "iconst_m1", "iconst_0", "iconst_1", "iconst_2",
"", "", "", "", "", "",
"", "", "", ""
};
-
- sb.append(" ").append(ClassFile.flagsToString(flags,false));
- sb.append(method.debugToString());
- if (thrownExceptions.size() > 0) {
- sb.append("throws");
- for(Enumeration e = thrownExceptions.keys();e.hasMoreElements();)
- sb.append(" ").append(((Type.Class)e.nextElement()).debugToString()).append(",");
- sb.setLength(sb.length()-1);
- sb.append(" ");
- }
- if ((flags & (NATIVE|ABSTRACT))==0) {
- sb.append("{\n");
- for(int i=0;i<size();i++) {
- sb.append(" ");
- for(int j=i==0?1:i;j<10000;j*=10) sb.append(" ");
- sb.append(i).append(": ");
- sb.append(OP_NAMES[op[i]&0xff]);
- String s = null;
- if (arg[i] instanceof Type) s = ((Type)arg[i]).debugToString();
- else if (arg[i] instanceof Type.Class.Member) s = ((Type.Class.Member)arg[i]).toString();
- else if (arg[i] instanceof String) s = "\"" + s + "\"";
- else if (arg[i] != null) s = arg[i].toString();
- if (s != null) sb.append(" ").append(s);
- sb.append("\n");
- }
- sb.append(" }\n");
- } else {
- sb.append(";");
+ for(int i=0;i<size();i++) {
+ sb.append(" ");
+ for(int j=i==0?1:i;j<10000;j*=10) sb.append(" ");
+ sb.append(i).append(": ");
+ sb.append(OP_NAMES[op[i]&0xff]);
+ String s = null;
+ if (arg[i] instanceof Type) s = ((Type)arg[i]).toString();
+ else if (arg[i] instanceof Type.Class.Member) s = ((Type.Class.Member)arg[i]).toString();
+ else if (arg[i] instanceof String) s = "\"" + arg[i] + "\"";
+ else if (arg[i] != null) s = arg[i].toString();
+ if (s != null) sb.append(" ").append(s);
+ sb.append("\n");
}
}