X-Git-Url: http://git.megacz.com/?p=org.ibex.classgen.git;a=blobdiff_plain;f=src%2Forg%2Fibex%2Fclassgen%2FFieldGen.java;h=b6573428f6327ceeab309b6bb02b215344fc8568;hp=805a7278ce25596f133755ccf444345a15633333;hb=6d02ca13f481e213ee0ae26f7acdd40b20dfc6af;hpb=cb0bae954e7dd0067e77c436c78ee19ace52d9e3 diff --git a/src/org/ibex/classgen/FieldGen.java b/src/org/ibex/classgen/FieldGen.java index 805a727..b657342 100644 --- a/src/org/ibex/classgen/FieldGen.java +++ b/src/org/ibex/classgen/FieldGen.java @@ -2,8 +2,61 @@ package org.ibex.classgen; import java.io.*; -public class FieldGen { - public void dump(DataOutput o) { - throw new Error("FIXME"); +/** Class representing a field in a generated classfile + @see ClassFile#addField */ +public class FieldGen implements CGConst { + private final String name; + private final Type type; + private final int flags; + private final ClassFile.AttrGen attrs; + + StringBuffer debugToString(StringBuffer sb) { + sb.append(ClassFile.flagsToString(flags,false)); + sb.append(type.debugToString()); + sb.append(" "); + sb.append(name); + if(attrs.contains("ConstantValue")) + sb.append(" = \"").append(attrs.get("ConstantValue")).append("\""); + sb.append(";"); + return sb; + } + + FieldGen(DataInput in, ConstantPool cp) throws IOException { + flags = in.readShort(); + if((flags & ~(PUBLIC|PRIVATE|PROTECTED|VOLATILE|TRANSIENT|STATIC|FINAL)) != 0) + throw new ClassFile.ClassReadExn("invalid flags"); + name = cp.getUtf8KeyByIndex(in.readShort()); + type = Type.instance(cp.getUtf8KeyByIndex(in.readShort())); + attrs = new ClassFile.AttrGen(in,cp); + } + + FieldGen(ClassFile owner, String name, Type type, int flags) { + if((flags & ~(PUBLIC|PRIVATE|PROTECTED|VOLATILE|TRANSIENT|STATIC|FINAL)) != 0) + throw new IllegalArgumentException("invalid flags"); + this.name = name; + this.type = type; + this.flags = flags; + this.attrs = new ClassFile.AttrGen(); + } + + /** 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 & STATIC) == 0) throw new IllegalStateException("field does not have the STATIC bit set"); + attrs.put("ConstantValue",val); + } + + void finish(ConstantPool cp) { + cp.addUtf8(name); + cp.addUtf8(type.getDescriptor()); + + attrs.finish(cp); + } + + void dump(DataOutput o, ConstantPool cp) throws IOException { + o.writeShort(flags); + o.writeShort(cp.getUtf8Index(name)); + o.writeShort(cp.getUtf8Index(type.getDescriptor())); + attrs.dump(o,cp); } }