1 files changed, 83 insertions, 0 deletions
diff --git a/src/msil/ch/epfl/lamp/compiler/msil/CustomAttributeProvider.java b/src/msil/ch/epfl/lamp/compiler/msil/CustomAttributeProvider.java
new file mode 100644
index 0000000000..32a50fdf9b
--- /dev/null
+++ b/src/msil/ch/epfl/lamp/compiler/msil/CustomAttributeProvider.java
@@ -0,0 +1,83 @@
+/*
+ * System.Reflection-like API for access to .NET assemblies (DLL & EXE)
+ */
+
+// $Id$
+
+package ch.epfl.lamp.compiler.msil;
+
+import java.util.List;
+import java.util.LinkedList;
+import java.util.Iterator;
+
+/**
+ * @author Nikolay Mihaylov
+ * @version 1.0
+ */
+public abstract class CustomAttributeProvider implements ICustomAttributeProvider {
+
+    //##########################################################################
+
+    protected List/*<Attribute>*/ custAttrs;
+    private static final Object[] EMPTY = new Object[0];
+
+    //TODO: take inherit into account
+    public Object[] GetCustomAttributes(boolean inherit) {
+	initAttributes(null);
+	return custAttrs.size() == 0 ? EMPTY
+            : custAttrs.toArray(new Attribute[custAttrs.size()]);
+    }
+
+    //TODO: take inherit into account
+    public Object[] GetCustomAttributes(Type attributeType, boolean inherit) {
+	initAttributes(attributeType);
+        List tAttrs = null;
+        if (constrType == attributeType)
+            tAttrs = custAttrs;
+        else {
+            tAttrs = new LinkedList();
+            for (Iterator attrs = custAttrs.iterator(); attrs.hasNext(); ) {
+                Attribute a = (Attribute) attrs.next();
+                if (a.GetType() == attributeType) tAttrs.add(a);
+            }
+        }
+	return tAttrs.size() == 0 ? EMPTY
+            : tAttrs.toArray(new Attribute[tAttrs.size()]);
+    }
+
+    //TODO: take inherit into account
+    public boolean IsDefined(Type attributeType, boolean inherit) {
+	initAttributes(attributeType);
+        if (constrType == attributeType)
+            return custAttrs.size() > 0;
+	Iterator attrs = custAttrs.iterator();
+	while (attrs.hasNext()) {
+	    if (((Attribute)attrs.next()).GetType() == attributeType)
+		return true;
+	}
+	return false;
+// 	return inherit && (DeclaringClass.BaseType != null)
+// 	    && DeclaringClass.BaseType.IsDefined(inherit);
+    }
+
+    protected void addCustomAttribute(ConstructorInfo constr, byte[] value) {
+        Attribute attr = new Attribute(constr, value);
+        assert constrType == null || constrType == attr.GetType();
+        if (custAttrs == null)
+            custAttrs = new LinkedList();
+	custAttrs.add(attr);
+    }
+
+    private void initAttributes(Type atype) {
+	if (custAttrs != null
+            && (constrType == null || constrType == atype))
+	    return;
+	custAttrs = new LinkedList();
+        constrType = atype;
+	loadCustomAttributes(atype);
+    }
+
+    protected void loadCustomAttributes(Type atype) {}
+
+    private Type constrType;
+}