1 files changed, 66 insertions, 0 deletions

diff --git a/src/cuchaz/enigma/bytecode/MethodParameterWriter.java b/src/cuchaz/enigma/bytecode/MethodParameterWriter.java
new file mode 100644
index 0000000..5a11cd8
--- /dev/null
+++ b/src/cuchaz/enigma/bytecode/MethodParameterWriter.java
@@ -0,0 +1,66 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Public License v3.0
+ * which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/gpl.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.CtConstructor;
+import javassist.CtMethod;
+import javassist.bytecode.Descriptor;
+import cuchaz.enigma.mapping.ArgumentEntry;
+import cuchaz.enigma.mapping.BehaviorEntry;
+import cuchaz.enigma.mapping.ClassEntry;
+import cuchaz.enigma.mapping.ConstructorEntry;
+import cuchaz.enigma.mapping.MethodEntry;
+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
+                ClassEntry classEntry = new ClassEntry(Descriptor.toJvmName(c.getName()));
+                for (CtBehavior behavior : c.getDeclaredBehaviors()) {
+                        int numParams = Descriptor.numOfParameters(behavior.getMethodInfo().getDescriptor());
+                        if (numParams <= 0) {
+                                continue;
+                        }
+                        
+                        // get the behavior entry
+                        BehaviorEntry behaviorEntry;
+                        if (behavior instanceof CtMethod) {
+                                behaviorEntry = new MethodEntry(classEntry, behavior.getMethodInfo().getName(), behavior.getSignature());
+                        } else if (behavior instanceof CtConstructor) {
+                                behaviorEntry = new ConstructorEntry(classEntry, behavior.getSignature());
+                        } else {
+                                throw new Error("Unsupported behavior type: " + behavior.getClass().getName());
+                        }
+                        
+                        // get the list of parameter 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);
+                }
+        }
+}