Support Gradle alongside SSJB

This makes builds faster, simpler and better automated but still keeps
Cuchaz happy. :)

1 files changed, 70 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..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);
+                }
+        }
+}