add functions for getting the parameter names of method

2 files changed, 24 insertions, 0 deletions

diff --git a/src/main/javassist/bytecode/LocalVariableAttribute.java b/src/main/javassist/bytecode/LocalVariableAttribute.java
index a0a62cc3..c1106be1 100644
--- a/src/main/javassist/bytecode/LocalVariableAttribute.java
+++ b/src/main/javassist/bytecode/LocalVariableAttribute.java
@@ -218,6 +218,22 @@ public class LocalVariableAttribute extends AttributeInfo {
     }
 
     /**
+     * Returns the name of the local variable with given index.
+     * If you want get the parameter name of method with correct order,
+     * should using this method.
+     *
+     * @param index         the index of the local variable.
+     */
+    public String variableNameByIndex(int index) {
+        for (int i = 0; i < tableLength(); i++) {
+            if (index(i) == index) {
+                return getConstPool().getUtf8Info(nameIndex(i));
+            }
+        }
+        throw new ArrayIndexOutOfBoundsException();
+    }
+
+    /**
      * Returns the value of
      * <code>local_variable_table[i].descriptor_index</code>.
      * This represents the type descriptor of the local variable.
diff --git a/src/main/javassist/bytecode/MethodParametersAttribute.java b/src/main/javassist/bytecode/MethodParametersAttribute.java
index 12521095..b9c252a9 100644
--- a/src/main/javassist/bytecode/MethodParametersAttribute.java
+++ b/src/main/javassist/bytecode/MethodParametersAttribute.java
@@ -57,6 +57,14 @@ public class MethodParametersAttribute extends AttributeInfo {
     }
 
     /**
+     * Returns the name of the i-th element of <code>parameters</code>.
+     * @param i         the position of the parameter.
+     */
+    public String parameterName(int i) {
+        return getConstPool().getUtf8Info(name(i));
+    }
+
+    /**
      * Returns the value of <code>access_flags</code> of the i-th element of <code>parameters</code>.
      *
      * @param i         the position of the parameter.