From e3f452250e51b7271f3989c7dfd12e4422934942 Mon Sep 17 00:00:00 2001
From: Michael Smith
Date: Thu, 21 May 2015 23:30:00 +0100
Subject: Support Gradle alongside SSJB

This makes builds faster, simpler and better automated but still keeps
Cuchaz happy. :)
---
 .../enigma/bytecode/MethodParameterWriter.java     | 70 ++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 src/cuchaz/enigma/bytecode/MethodParameterWriter.java

(limited to 'src/cuchaz/enigma/bytecode/MethodParameterWriter.java')

diff --git a/src/cuchaz/enigma/bytecode/MethodParameterWriter.java b/src/cuchaz/enigma/bytecode/MethodParameterWriter.java
new file mode 100644
index 0000000..0bdf47a
--- /dev/null
+++ b/src/cuchaz/enigma/bytecode/MethodParameterWriter.java
@@ -0,0 +1,70 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * 
+ * Contributors:
+ *     Jeff Martin - initial API and implementation
+ ******************************************************************************/
+package cuchaz.enigma.bytecode;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javassist.CtBehavior;
+import javassist.CtClass;
+import javassist.bytecode.CodeAttribute;
+import javassist.bytecode.LocalVariableAttribute;
+import cuchaz.enigma.mapping.ArgumentEntry;
+import cuchaz.enigma.mapping.BehaviorEntry;
+import cuchaz.enigma.mapping.EntryFactory;
+import cuchaz.enigma.mapping.Signature;
+import cuchaz.enigma.mapping.Translator;
+
+public class MethodParameterWriter {
+	
+	private Translator m_translator;
+	
+	public MethodParameterWriter(Translator translator) {
+		m_translator = translator;
+	}
+	
+	public void writeMethodArguments(CtClass c) {
+		
+		// Procyon will read method arguments from the "MethodParameters" attribute, so write those
+		for (CtBehavior behavior : c.getDeclaredBehaviors()) {
+			
+			// if there's a local variable table here, don't write a MethodParameters attribute
+			// let the local variable writer deal with it instead
+			// procyon starts doing really weird things if we give it both attributes
+			CodeAttribute codeAttribute = behavior.getMethodInfo().getCodeAttribute();
+			if (codeAttribute != null && codeAttribute.getAttribute(LocalVariableAttribute.tag) != null) {
+				continue;
+			}
+			
+			BehaviorEntry behaviorEntry = EntryFactory.getBehaviorEntry(behavior);
+
+			// get the number of arguments
+			Signature signature = behaviorEntry.getSignature();
+			if (signature == null) {
+				// static initializers have no signatures, or arguments
+				continue;
+			}
+			int numParams = signature.getArgumentTypes().size();
+			if (numParams <= 0) {
+				continue;
+			}
+			
+			// get the list of argument names
+			List<String> names = new ArrayList<String>(numParams);
+			for (int i = 0; i < numParams; i++) {
+				names.add(m_translator.translate(new ArgumentEntry(behaviorEntry, i, "")));
+			}
+			
+			// save the mappings to the class
+			MethodParametersAttribute.updateClass(behavior.getMethodInfo(), names);
+		}
+	}
+}
-- 
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