1 files changed, 59 insertions, 0 deletions
diff --git a/plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/syslib/SyslibContributor.java b/plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/syslib/SyslibContributor.java
new file mode 100644
index 00000000..48fedea0
--- /dev/null
+++ b/plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/syslib/SyslibContributor.java
@@ -0,0 +1,59 @@
+/*
+Copyright (c) 2008 Arno Haase.
+All rights reserved. This program and the accompanying materials
+are made available under the terms of the Eclipse Public License v1.0
+which accompanies this distribution, and is available at
+http://www.eclipse.org/legal/epl-v10.html
+
+Contributors:
+    Arno Haase - initial API and implementation
+ */
+package org.eclipse.xtend.backend.syslib;
+
+import java.io.InputStream;
+import java.util.Collection;
+
+import org.eclipse.xtend.backend.common.BackendTypesystem;
+import org.eclipse.xtend.backend.common.NamedFunction;
+import org.eclipse.xtend.backend.functions.DuplicateAwareNamedFunctionCollection;
+import org.eclipse.xtend.backend.functions.java.JavaFunctionClassContributor;
+import org.eclipse.xtend.backend.util.ErrorHandler;
+import org.eclipse.xtend.backend.util.ResourceToList;
+
+
+/**
+ * 
+ * @author Arno Haase (http://www.haase-consulting.com)
+ */
+public final class SyslibContributor {
+    public static final String SYSLIB_EXTENSION_RESOURCE = "/xtend.syslib.extensions";
+    
+    private final DuplicateAwareNamedFunctionCollection _functions = new DuplicateAwareNamedFunctionCollection ();
+    
+    public SyslibContributor (BackendTypesystem ts) {
+        // register built-in functions
+        registerExtensionClass (ts, StringOperations.class);
+        registerExtensionClass (ts, CollectionOperations.class);
+        registerExtensionClass (ts, FileIoOperations.class);
+        registerExtensionClass (ts, PrimitiveOperations.class);
+
+        // allow external overwriting and extension
+        final InputStream in = getClass().getResourceAsStream (SYSLIB_EXTENSION_RESOURCE);
+        for (String s: new ResourceToList (in).getResult()) {
+            try {
+                registerExtensionClass(ts, Class.forName(s));
+            } catch (ClassNotFoundException e) {
+                ErrorHandler.handle (e);
+            }
+        }
+    }
+
+    private void registerExtensionClass (BackendTypesystem ts, Class<?> cls) {
+        for (NamedFunction f: new JavaFunctionClassContributor (cls, ts).getContributedFunctions())
+            _functions.register (f);
+    }
+    
+    public Collection<NamedFunction> getContributedFunctions () {
+        return _functions.getFunctions();
+    }
+}