1 files changed, 206 insertions, 0 deletions
diff --git a/src/core/lombok/bytecode/SneakyThrowsRemover.java b/src/core/lombok/bytecode/SneakyThrowsRemover.java
new file mode 100644
index 00000000..fde29924
--- /dev/null
+++ b/src/core/lombok/bytecode/SneakyThrowsRemover.java
@@ -0,0 +1,206 @@
+/*
+ * Copyright © 2010 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.bytecode;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import lombok.core.DiagnosticsReceiver;
+import lombok.core.PostCompilerTransformation;
+
+import org.mangosdk.spi.ProviderFor;
+import org.objectweb.asm.AnnotationVisitor;
+import org.objectweb.asm.Attribute;
+import org.objectweb.asm.ClassAdapter;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodAdapter;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.commons.JSRInlinerAdapter;
+
+@ProviderFor(PostCompilerTransformation.class)
+public class SneakyThrowsRemover implements PostCompilerTransformation {
+	private static class FixedClassWriter extends ClassWriter {
+		FixedClassWriter(ClassReader classReader, int flags) {
+			super(classReader, flags);
+		}
+		
+		@Override protected String getCommonSuperClass(String type1, String type2) {
+			//By default, ASM will attempt to live-load the class types, which will fail if meddling with classes in an
+			//environment with custom classloaders, such as Equinox. It's just an optimization; returning Object is always legal.
+			try {
+				return super.getCommonSuperClass(type1, type2);
+			} catch (Exception e) {
+				return "java/lang/Object";
+			}
+		}
+	}
+	
+	protected byte[] fixJSRInlining(byte[] byteCode) {
+		ClassReader reader = new ClassReader(byteCode);
+		ClassWriter writer = new FixedClassWriter(reader, 0);
+		
+		ClassVisitor visitor = new ClassAdapter(writer) {
+			@Override public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
+				return new JSRInlinerAdapter(super.visitMethod(access, name, desc, signature, exceptions), access, name, desc, signature, exceptions);
+			}
+		};
+		
+		reader.accept(visitor, 0);
+		return writer.toByteArray();
+	}
+	
+	@Override public byte[] applyTransformations(byte[] original, String className, DiagnosticsReceiver diagnostics) {
+		if (!new ClassFileMetaData(original).usesMethod("lombok/Lombok", "sneakyThrow")) return null;
+		
+		byte[] fixedByteCode = fixJSRInlining(original);
+		
+		ClassReader reader = new ClassReader(fixedByteCode);
+		ClassWriter writer = new FixedClassWriter(reader, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
+		
+		final AtomicBoolean changesMade = new AtomicBoolean();
+		
+		class SneakyThrowsRemoverVisitor extends MethodAdapter {
+			boolean justAddedAthrow = false;
+			
+			SneakyThrowsRemoverVisitor(MethodVisitor mv) {
+				super(mv);
+			}
+			
+			@Override public void visitMethodInsn(int opcode, String owner, String name, String desc) {
+				boolean hit = true;
+				if (hit && opcode != Opcodes.INVOKESTATIC) hit = false;
+				if (hit && !"sneakyThrow".equals(name)) hit = false;
+				if (hit && !"lombok/Lombok".equals(owner)) hit = false;
+				if (hit && !"(Ljava/lang/Throwable;)Ljava/lang/RuntimeException;".equals(desc)) hit = false;
+				if (hit) {
+					changesMade.set(true);
+					justAddedAthrow = true;
+					super.visitInsn(Opcodes.ATHROW);
+				} else {
+					super.visitMethodInsn(opcode, owner, name, desc);
+				}
+			}
+			
+			@Override public void visitInsn(int opcode) {
+				if (!justAddedAthrow || opcode != Opcodes.ATHROW) {
+					super.visitInsn(opcode);
+				}
+				justAddedAthrow = false;
+			}
+			
+			@Override public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
+				justAddedAthrow = false;
+				return super.visitAnnotation(desc, visible);
+			}
+			
+			@Override public AnnotationVisitor visitAnnotationDefault() {
+				justAddedAthrow = false;
+				return super.visitAnnotationDefault();
+			}
+			
+			@Override public void visitAttribute(Attribute attr) {
+				justAddedAthrow = false;
+				super.visitAttribute(attr);
+			}
+			
+			@Override public void visitFieldInsn(int opcode, String owner, String name, String desc) {
+				justAddedAthrow = false;
+				super.visitFieldInsn(opcode, owner, name, desc);
+			}
+			
+			@Override public void visitIincInsn(int var, int increment) {
+				justAddedAthrow = false;
+				super.visitIincInsn(var, increment);
+			}
+			
+			@Override public void visitIntInsn(int opcode, int operand) {
+				justAddedAthrow = false;
+				super.visitIntInsn(opcode, operand);
+			}
+			
+			@Override public void visitJumpInsn(int opcode, Label label) {
+				justAddedAthrow = false;
+				super.visitJumpInsn(opcode, label);
+			}
+			
+			@Override public void visitLabel(Label label) {
+				justAddedAthrow = false;
+				super.visitLabel(label);
+			}
+			
+			@Override public void visitLdcInsn(Object cst) {
+				justAddedAthrow = false;
+				super.visitLdcInsn(cst);
+			}
+			
+			@Override public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
+				justAddedAthrow = false;
+				super.visitLocalVariable(name, desc, signature, start, end, index);
+			}
+			
+			@Override public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) {
+				justAddedAthrow = false;
+				super.visitLookupSwitchInsn(dflt, keys, labels);
+			}
+			
+			@Override public void visitMultiANewArrayInsn(String desc, int dims) {
+				justAddedAthrow = false;
+				super.visitMultiANewArrayInsn(desc, dims);
+			}
+			
+			@Override public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) {
+				justAddedAthrow = false;
+				return super.visitParameterAnnotation(parameter, desc, visible);
+			}
+			
+			@Override public void visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels) {
+				justAddedAthrow = false;
+				super.visitTableSwitchInsn(min, max, dflt, labels);
+			}
+			
+			@Override public void visitTryCatchBlock(Label start, Label end, Label handler, String type) {
+				justAddedAthrow = false;
+				super.visitTryCatchBlock(start, end, handler, type);
+			}
+			
+			@Override public void visitTypeInsn(int opcode, String type) {
+				justAddedAthrow = false;
+				super.visitTypeInsn(opcode, type);
+			}
+			
+			@Override public void visitVarInsn(int opcode, int var) {
+				justAddedAthrow = false;
+				super.visitVarInsn(opcode, var);
+			}
+		}
+		
+		reader.accept(new ClassAdapter(writer) {
+			@Override public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
+				return new SneakyThrowsRemoverVisitor(super.visitMethod(access, name, desc, signature, exceptions));
+			}
+		}, 0);
+		return changesMade.get() ? writer.toByteArray() : null;
+	}
+}