如何在javascript中从流程图生成代码

Question

正在使用baklavajs库来创建流程图，我有一些自定义节点，例如SwitchNode，SayTextNode ..

例如我有以下流程图：

我需要生成下面的代码：

print("hi")
print("How i can help")

input = input()
if input == 1:
    print("one")

if input == 2:
    print("two")

if input == 3:
    print("three")

库生成的 json 对象包含所有节点以及每个节点的连接，对于本示例生成的 json 对象：

{
  "nodes": [
    {
      "type": "StartNode",
      "id": "node_16655291011630",
      "name": "Start",
      "options": [
        [
          "Start Text",
          "Hi"
        ]
      ],
      "state": {},
      "interfaces": [
        [
          "Next",
          {
            "id": "ni_16655291011631",
            "value": null
          }
        ]
      ],
      "position": {},
      "width": 200,
      "twoColumn": false,
      "customClasses": ""
    },
    {
      "type": "SayTextNode",
      "id": "node_16655291011642",
      "name": "SayText",
      "options": [
        [
          "Text",
          "How i can help"
        ]
      ],
      "state": {},
      "interfaces": [
        [
          "input",
          {
            "id": "ni_16655291011643",
            "value": null
          }
        ],
        [
          "Next",
          {
            "id": "ni_16655291011654",
            "value": null
          }
        ]
      ],
      "position": {},
      "width": 200,
      "twoColumn": false,
      "customClasses": ""
    },
    {
      "type": "SwitchNode",
      "id": "node_16655291011655",
      "name": "SwitchNode",
      "options": [
        [
          "Operation",
          "Equals"
        ],
        [
          "Cases number",
          3
        ],
        [
          "Case 1",
          "1"
        ],
        [
          "Case 2",
          "2"
        ],
        [
          "Case 3",
          "3"
        ]
      ],
      "state": {},
      "interfaces": [
        [
          "input",
          {
            "id": "ni_16655291011656",
            "value": null
          }
        ],
        [
          "Case 1",
          {
            "id": "ni_166552910116817",
            "value": null
          }
        ],
        [
          "Case 2",
          {
            "id": "ni_166552910116818",
            "value": null
          }
        ],
        [
          "Case 3",
          {
            "id": "ni_166552910116819",
            "value": null
          }
        ]
      ],
      "position": {},
      "width": 200,
      "twoColumn": false,
      "customClasses": ""
    },
    {
      "type": "SayTextNode",
      "id": "node_16655291011668",
      "name": "SayText",
      "options": [
        [
          "Text",
          "one"
        ]
      ],
      "state": {},
      "interfaces": [
        [
          "input",
          {
            "id": "ni_16655291011669",
            "value": null
          }
        ],
        [
          "Next",
          {
            "id": "ni_166552910116610",
            "value": null
          }
        ]
      ],
      "position": {},
      "width": 200,
      "twoColumn": false,
      "customClasses": ""
    },
    {
      "type": "SayTextNode",
      "id": "node_166552910116711",
      "name": "SayText",
      "options": [
        [
          "Text",
          "two"
        ]
      ],
      "state": {},
      "interfaces": [
        [
          "input",
          {
            "id": "ni_166552910116712",
            "value": null
          }
        ],
        [
          "Next",
          {
            "id": "ni_166552910116713",
            "value": null
          }
        ]
      ],
      "position": {},
      "width": 200,
      "twoColumn": false,
      "customClasses": ""
    },
    {
      "type": "SayTextNode",
      "id": "node_166552910116714",
      "name": "SayText",
      "options": [
        [
          "Text",
          "three"
        ]
      ],
      "state": {},
      "interfaces": [
        [
          "input",
          {
            "id": "ni_166552910116715",
            "value": null
          }
        ],
        [
          "Next",
          {
            "id": "ni_166552910116716",
            "value": null
          }
        ]
      ],
      "position": {},
      "width": 200,
      "twoColumn": false,
      "customClasses": ""
    }
  ],
  "connections": [
    {
      "id": "166552910116921",
      "from": "ni_16655291011631",
      "to": "ni_16655291011643"
    },
    {
      "id": "166552910117023",
      "from": "ni_16655291011654",
      "to": "ni_16655291011656"
    },
    {
      "id": "166552910117125",
      "from": "ni_166552910116817",
      "to": "ni_16655291011669"
    },
    {
      "id": "166552910117227",
      "from": "ni_166552910116818",
      "to": "ni_166552910116712"
    },
    {
      "id": "166552910117329",
      "from": "ni_166552910116819",
      "to": "ni_166552910116715"
    }
  ],
  "panning": {},
  "scaling": 1
}

感谢您的帮助；）

Answer 1

这是使用基本流程图作为示例的简化方法：

表示流程图：首先，您需要以图形方式表示流程图。您可以使用任何流程图工具甚至手动绘制它来完成此操作。

定义数据结构：将流程图转换为表示节点及其之间的连接的数据结构。这可以是邻接列表、邻接矩阵或任何其他合适的数据结构。

Translate Data Structure to Code：编写一个函数，遍历数据结构并根据流程图逻辑生成 JavaScript 代码。

这里有一个基本示例来说明这些步骤：

// Sample flow chart represented as an adjacency list
const flowChart = {
  start: { condition: 'if (condition) {', next: ['action1', 'action2'] },
  action1: { code: 'console.log("Action 1");', next: ['decision'] },
  action2: { code: 'console.log("Action 2");', next: ['decision'] },
  decision: { condition: 'if (anotherCondition) {', next: ['action3'] },
  action3: { code: 'console.log("Action 3");', next: ['end'] },
  end: { code: '}', next: [] }
};

// Function to generate JavaScript code from the flow chart
function generateCode(flowChart) {
  let code = '';

  function traverse(node) {
    if (node.code) {
      code += `${node.code}\n`;
    }
    if (node.condition) {
      code += `${node.condition}\n`;
    }
    node.next.forEach(nextNode => traverse(flowChart[nextNode]));
  }

  traverse(flowChart.start);
  return code;
}

// Generate JavaScript code
const generatedCode = generateCode(flowChart);
console.log(generatedCode);

在此示例中，flowChart 将流程图表示为邻接表。 generateCode 函数递归遍历流程图，并根据每个节点中指定的条件和操作生成 JavaScript 代码。

您可能需要调整此方法以满足您的特定要求。此外，请考虑实施中的错误处理和边缘情况。