Initial commit

src/main/java/haidnor/jvm/util/SignatureUtil.java

@@ -0,0 +1,51 @@
+package haidnor.jvm.util;
+
+import lombok.SneakyThrows;
+import org.apache.bcel.classfile.Utility;
+
+public abstract class SignatureUtil {
+
+    /**
+     * 解析方法签名返回方法参数类型数组
+     */
+    @SneakyThrows
+    public static Class<?>[] getParameterTypes(String methodeSignature) {
+        String[] argumentTypeArr = Utility.methodSignatureArgumentTypes(methodeSignature, false);
+        Class<?>[] argumentClassArr = new Class[argumentTypeArr.length];
+        for (int i = 0; i < argumentTypeArr.length; i++) {
+            Class<?> argumentClass;
+            String argumentType = argumentTypeArr[i];
+            switch (argumentType) {
+                case "byte":
+                    argumentClass = byte.class;
+                    break;
+                case "short":
+                    argumentClass = short.class;
+                    break;
+                case "boolean":
+                    argumentClass = boolean.class;
+                    break;
+                case "char":
+                    argumentClass = char.class;
+                    break;
+                case "int":
+                    argumentClass = int.class;
+                    break;
+                case "long":
+                    argumentClass = long.class;
+                    break;
+                case "float":
+                    argumentClass = float.class;
+                    break;
+                case "double":
+                    argumentClass = double.class;
+                    break;
+                default:
+                    argumentClass = Class.forName(argumentType);
+            }
+            argumentClassArr[i] = argumentClass;
+        }
+        return argumentClassArr;
+    }
+
+}