got it to compile

[org.ibex.classgen.git] / src / org / ibex / classgen / FieldGen.java

diff --git a/src/org/ibex/classgen/FieldGen.java b/src/org/ibex/classgen/FieldGen.java
index 805a727..e4f6763 100644 (file)
--- a/src/org/ibex/classgen/FieldGen.java
+++ b/src/org/ibex/classgen/FieldGen.java
@@ -2,8 +2,48 @@ 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 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 ClassGen.AttrGen attrs;
+    
+    private Object constantValue;
+    
+    FieldGen(DataInput in) { throw new Error("Brian is lame"); }
+    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 ClassGen.AttrGen(cp);
+        
+        cp.addUtf8(name);
+        cp.addUtf8(type.getDescriptor());
+    }
+    
+    /** 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()));
+        o.writeShort(attrs.size());
+        attrs.dump(o);
     }
 }