net.hasor.dataql.runtime.inset.LOCAL Maven / Gradle / Ivy
/*
* Copyright 2008-2009 the original author or authors.
*
* 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 net.hasor.dataql.runtime.inset;
import net.hasor.dataql.runtime.InsetProcess;
import net.hasor.dataql.runtime.InsetProcessContext;
import net.hasor.dataql.runtime.InstSequence;
import net.hasor.dataql.runtime.mem.DataHeap;
import net.hasor.dataql.runtime.mem.DataStack;
import net.hasor.dataql.runtime.mem.EnvStack;
import net.hasor.dataql.runtime.mem.RefLambdaCallStruts;
/**
* LOCAL // 将入参存入堆，也用于标记变量名称
* - 参数说明：共3参数；参数1：调用时的入参位置；参数2：存储到堆中的位置；参数3：参数名助记符；
* - 栈行为：消费0，产出0
* - 堆行为：存入数据
*
* @author 赵永春 ([email protected])
* @version : 2017-07-19
*/
class LOCAL implements InsetProcess {
@Override
public int getOpcode() {
return LOCAL;
}
@Override
public void doWork(InstSequence sequence, DataHeap dataHeap, DataStack dataStack, EnvStack envStack, InsetProcessContext context) {
int localArgsIdx = sequence.currentInst().getInt(0);
int localPosition = sequence.currentInst().getInt(1);
String name = sequence.currentInst().getString(2);
RefLambdaCallStruts lambdaCall = (RefLambdaCallStruts) dataStack.peek();
Object[] callParams = lambdaCall.getParams();
//
Object paramValue = null;
if (localArgsIdx < callParams.length) {
paramValue = callParams[localArgsIdx];
}
dataHeap.saveData(localPosition, paramValue);
dataHeap.defineName(localPosition, name);
}
}