From 21717cec11d5a8abdc3eba280290a65103bbeaf7 Mon Sep 17 00:00:00 2001
From: Reinier Zwitserloot <reinier@tipit.to>
Date: Wed, 23 Sep 2009 07:44:13 +0200
Subject: BIIG change to the eclipse agent: Now all patcher classes represent
 themselves via SPI. LinkedNOdeFinderTransformer is broken.

---
 .../eclipse/agent/EclipseASTNodeTransformer.java   | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src_eclipseagent/lombok/eclipse/agent/EclipseASTNodeTransformer.java

(limited to 'src_eclipseagent/lombok/eclipse/agent/EclipseASTNodeTransformer.java')

diff --git a/src_eclipseagent/lombok/eclipse/agent/EclipseASTNodeTransformer.java b/src_eclipseagent/lombok/eclipse/agent/EclipseASTNodeTransformer.java
new file mode 100644
index 00000000..e27aa08c
--- /dev/null
+++ b/src_eclipseagent/lombok/eclipse/agent/EclipseASTNodeTransformer.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright © 2009 Reinier Zwitserloot and Roel Spilker.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package lombok.eclipse.agent;
+
+import org.mangosdk.spi.ProviderFor;
+import org.objectweb.asm.ClassAdapter;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.FieldVisitor;
+import org.objectweb.asm.Opcodes;
+
+/**
+ * Transforms Eclipse's {@code org.eclipse.jdt.internal.compiler.ast.ASTNode} class,
+ * which is the super-class of all AST Node class for Eclipse.
+ * 
+ * Transformations applied:<ul>
+ * <li>A field is added: 'public transient ASTNode $generatedBy = null;'. It is set to something other than {@code null} if
+ * this node is generated; the reference then points at the node that is responsible for its generation (example: a {@code @Data} annotation).</li></ul>
+ */
+@ProviderFor(EclipseTransformer.class)
+public class EclipseASTNodeTransformer implements EclipseTransformer {
+	private static final String ASTNODE = "org/eclipse/jdt/internal/compiler/ast/ASTNode";
+
+	public byte[] transform(byte[] classfileBuffer) {
+		ClassReader reader = new ClassReader(classfileBuffer);
+		ClassWriter writer = new ClassWriter(reader, 0);
+	
+		ClassAdapter adapter = new ASTNodePatcherAdapter(writer);
+		reader.accept(adapter, 0);
+		return writer.toByteArray();
+	}
+	
+	private static class ASTNodePatcherAdapter extends ClassAdapter {
+		ASTNodePatcherAdapter(ClassVisitor cv) {
+			super(cv);
+		}
+		
+		@Override public void visitEnd() {
+			FieldVisitor fv = cv.visitField(Opcodes.ACC_PUBLIC | Opcodes.ACC_TRANSIENT, "$generatedBy", "L" + ASTNODE + ";", null, null);
+			fv.visitEnd();
+			cv.visitEnd();
+		}
+	}
+	
+	@Override public String getTargetClassName() {
+		return ASTNODE;
+	}
+}
-- 
cgit