Enjoy 3.2 release ^_^

src/main/java/com/jfinal/template/expr/ast/MethodInfo.java

@@ -0,0 +1,99 @@
+/**
+ * Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jfinal.template.expr.ast;
+
+import java.lang.reflect.Array;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+
+/**
+ * MethodInfo
+ */
+public class MethodInfo {
+	
+	protected final String key;
+	protected final Class<?> clazz;
+	protected final Method method;
+	
+	protected final boolean isVarArgs;
+	protected final Class<?>[] paraTypes;
+	
+	public MethodInfo(String key, Class<?> clazz, Method method) {
+		this.key = key;
+		this.clazz = clazz;
+		this.method = method;
+		this.isVarArgs = method.isVarArgs();
+		this.paraTypes = method.getParameterTypes();
+	}
+	
+	public Object invoke(Object target, Object... args) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
+		if (isVarArgs) {
+			return invokeVarArgsMethod(target, args);
+		} else {
+			return method.invoke(target, args);
+		}
+	}
+	
+	protected Object invokeVarArgsMethod(Object target, Object[] argValues) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
+		Object[] finalArgValues = new Object[paraTypes.length];
+		
+		int fixedParaLength = paraTypes.length - 1;
+		System.arraycopy(argValues, 0, finalArgValues, 0, fixedParaLength);
+		Class<?> varParaComponentType = paraTypes[paraTypes.length - 1].getComponentType();
+		Object varParaValues = Array.newInstance(varParaComponentType, argValues.length - fixedParaLength);
+		int p = 0;
+		for (int i=fixedParaLength; i<argValues.length; i++) {
+			Array.set(varParaValues, p++, argValues[i]);
+		}
+		finalArgValues[paraTypes.length - 1] = varParaValues;
+		return method.invoke(target, finalArgValues);
+	}
+	
+	public String getKey() {
+		return key;
+	}
+	
+	public String getName() {
+		return method.getName();
+	}
+	
+	public boolean isStatic() {
+		return Modifier.isStatic(method.getModifiers());
+	}
+	
+	public boolean isVarArgs() {
+		return isVarArgs;
+	}
+	
+	protected Class<?>[] getParameterTypes() {
+		return paraTypes;
+	}
+	
+	public String toString() {
+		StringBuilder ret = new StringBuilder(clazz.getName()).append(".").append(method.getName()).append("(");
+		for (int i=0; i<paraTypes.length; i++) {
+			if (i > 0) {
+				ret.append(", ");
+			}
+			ret.append(paraTypes[i].getName());
+		}
+		return ret.append(")").toString();
+	}
+}
+
+