use-on-demand
Version:
78 lines • 2.96 kB
JavaScript
import { __read, __spread } from "tslib";
import { EleObj } from './EleObj';
import os from 'os';
import { RefCheckUtilsFactory } from './RefCheckUtils';
var IRefCheckUtil = RefCheckUtilsFactory.getV2();
var DrawUtil = /** @class */ (function () {
function DrawUtil() {
}
/**
* 绘制流程图
*/
DrawUtil.drawFlow = function (eleObjsWrapper, operations) {
var eleObjs = eleObjsWrapper.eleObjs;
this.checkHasStartEnd(eleObjs);
this.checkLinks(eleObjs);
IRefCheckUtil.checkRefs();
var _content = __spread(eleObjs, operations).map(function (obj) {
return obj.toString();
}).join(os.EOL);
var sep = DrawUtil.SyntaxSep;
var graph = DrawUtil.GraphType;
var final = "" + sep + graph + os.EOL + _content + os.EOL + sep;
var _final = final.trim();
return _final;
};
/**
* 检查是否有开始标签、结束标签。
*/
DrawUtil.checkHasStartEnd = function (eleObjs) {
var startEndCheck = [false, false];
eleObjs.forEach(function (item) {
if (item instanceof EleObj.Start) {
startEndCheck[0] = true;
}
if (item instanceof EleObj.End) {
startEndCheck[1] = true;
}
});
var result = startEndCheck.reduce(function (previousValue, total) {
return total && previousValue;
});
if (!result) {
throw new Error('并未满足条件：必须要有【Start】标签，必须要有【End】标签');
}
};
/**
* 检查连接线。
* 1.除【条件】、【平行】之外的框，连接数是否超过1
*/
DrawUtil.checkLinks = function (eleObjs) {
eleObjs.forEach(function (item) {
var maxTimes;
// TIP 从网上找到资料，可见这位作者相当聪明！Switch可以反过来用：https://stackoverflow.com/questions/36332665/how-to-use-instanceof-in-a-switch-statement
switch (true) {
case item instanceof EleObj.Condition: {
maxTimes = 3; // 【条件】，3次
break;
}
case item instanceof EleObj.Parallel: {
maxTimes = 2; // 【平行】，2次
break;
}
default: {
maxTimes = 1;
break;
}
}
if (item.linkTimes > maxTimes) {
throw new Error(item.toString() + "\u7684linkTimes - " + item.linkTimes + "\uFF0C\u5DF2\u8D85\u8FC7\u6700\u5927\u8FDE\u63A5\u6570 - " + maxTimes);
}
});
};
DrawUtil.SyntaxSep = '\`\`\`';
DrawUtil.GraphType = 'flow';
return DrawUtil;
}());
export { DrawUtil };
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