javascript - 如何用JavaScript解析自定义文本？

Question

用JavaScript写一个解析函数

将如下字符串：

bus ->  pcc(pcc1) -> transformer -> tfm(tfm1) -> elink
                                    tfm(tfm1) -> load
        pcc(pcc1) -> transformer -> tfm(tfm2) -> load
        pcc(pcc1) -> transformer -> tfm(tfm3) -> load

bus -> load

解析成类似于下面的json:

{
    "nodeType": "bus",
     "links": [
        {
            "nodeType": "pcc",
            "nodeName": "pcc1",
            "next": {
                "nodeType": "transformer",
                "links":[ 
                    {
                        "nodeType": "tfm",
                        "nodeName": "tfm1",
                        "links": [
                            {
                                "nodeType": "elink",
                            },
                            {
                                "nodeType": "load",
                            }
                        ]
                    },
                    {
                        "nodeType": "tfm",
                        "nodeName": "tfm2",
                        "next": {
                            "nodeType": "load",
                        }
                    },
                    {
                        "nodeType": "tfm",
                        "nodeName": "tfm3",
                        "next": {
                            "nodeType": "load",
                        }
                    },
                ]
            }
        },

        {
           
            "nodeType": "load",
                 
        }
    ]
}

Answer 1

function parseText(text) {
    const lines = text.split('\n');
    const root = { nodeType: 'bus', links: [] };
    let currentParent = root;

    lines.forEach(line => {
        const parts = line.trim().split(' -> ');
        let parent = root;

        parts.forEach((part, index) => {
            const match = part.match(/(\w+)\((\w+)\)/);
            let nodeType, nodeName;

            if (match) {
                nodeType = match[1];
                nodeName = match[2];
            } else {
                nodeType = part;
            }

            let node = parent.links.find(n => n.nodeType === nodeType && n.nodeName === nodeName);

            if (!node) {
                node = { nodeType, nodeName };
                if (index !== parts.length - 1) {
                    node.links = [];
                }
                parent.links.push(node);
            }

            parent = node;
        });
    });

    return root;
}

const text = `
bus ->  pcc(pcc1) -> transformer -> tfm(tfm1) -> elink
                                    tfm(tfm1) -> load
        pcc(pcc1) -> transformer -> tfm(tfm2) -> load
        pcc(pcc1) -> transformer -> tfm(tfm3) -> load
bus -> load
`;

console.log(JSON.stringify(parseText(text), null, 2));