San ANode Utils

Util Functions for San ANode. 和 San ANode 相关的功能函数集。

版本说明

由于 San 在不同的 minor 版本号之间，ANode 会有细微差别。所以，san-anode-utils 的版本号与 San 版本号二位兼容。也就是说，san-anode-utils 3.9.x 版本支持 San 3.9.x。

安装

$ npm i --save san-anode-utils

Properties

ExprType

表达式类型枚举常量。包含表达式见下方示例。

Object

ExprType = {
    STRING,
    NUMBER,
    BOOL,
    ACCESSOR,
    INTERP,
    CALL,
    TEXT,
    BINARY,
    UNARY,
    TERTIARY,
    OBJECT,
    ARRAY,
    NULL
};

Functions

parseTemplate

parseTemplate({string}template): {ANode}

将模板字符串解析成 ANode 对象。

const aNodeUtils = require('san-anode-utils');

let aNode = aNodeUtils.parseTemplate('<p>Hello {{name}}</p>');
/* aNode
{
    "directives": {},
    "props": [],
    "events": [],
    "children": [
        {
            "directives": {},
            "props": [],
            "events": [],
            "children": [
                {
                    "textExpr": {
                        "type": 7,
                        "segs": [
                            {
                                "type": 1,
                                "value": "Hello "
                            },
                            {
                                "type": 5,
                                "expr": {
                                    "type": 4,
                                    "paths": [
                                        {
                                            "type": 1,
                                            "value": "name"
                                        }
                                    ]
                                },
                                "filters": []
                            }
                        ]
                    }
                }
            ],
            "tagName": "p"
        }
    ]
}
*/

parseComponentTemplate

将组件的模板解析成 ANode 对象。与直接调用 parseTemplate 不同，parseComponentTemplate 会自动抽取第一个子元素作为组件根元素，为其附加 id/style/class 的逻辑，其行为与运行时组件编译完全相同。

parseComponentTemplate({Function}ComponentClass): {ANode}

const aNodeUtils = require('san-anode-utils');
const san = require('san');

const MyComponent = san.defineComponent({
    template: '<p>Hello {{name}}</p>'
});
let aNode = aNodeUtils.parseComponentTemplate(MyComponent);
/* aNode
{
    "directives": {},
    "props": [
        {
            "name": "class",
            "expr": {
                "type": 5,
                "expr": {
                    "type": 4,
                    "paths": [
                        {
                            "type": 1,
                            "value": "class"
                        }
                    ]
                },
                "filters": [
                    {
                        "type": 6,
                        "args": [],
                        "name": {
                            "type": 4,
                            "paths": [
                                {
                                    "type": 1,
                                    "value": "_class"
                                }
                            ]
                        }
                    }
                ]
            }
        },
        {
            "name": "style",
            "expr": {
                "type": 5,
                "expr": {
                    "type": 4,
                    "paths": [
                        {
                            "type": 1,
                            "value": "style"
                        }
                    ]
                },
                "filters": [
                    {
                        "type": 6,
                        "args": [],
                        "name": {
                            "type": 4,
                            "paths": [
                                {
                                    "type": 1,
                                    "value": "_style"
                                }
                            ]
                        }
                    }
                ]
            }
        },
        {
            "name": "id",
            "expr": {
                "type": 4,
                "paths": [
                    {
                        "type": 1,
                        "value": "id"
                    }
                ]
            }
        }
    ],
    "events": [],
    "children": [
        {
            "textExpr": {
                "type": 7,
                "segs": [
                    {
                        "type": 1,
                        "value": "Hello "
                    },
                    {
                        "type": 5,
                        "expr": {
                            "type": 4,
                            "paths": [
                                {
                                    "type": 1,
                                    "value": "name"
                                }
                            ]
                        },
                        "filters": []
                    }
                ]
            }
        }
    ],
    "tagName": "p"
}
*/

parseExpr

将表达式源码解析成 ANode 对象。

parseExpr({string}source): {ANode}

const aNodeUtils = require('san-anode-utils');

let aNode = aNodeUtils.parseExpr('num + 1');
/* aNode
{
    "type": 8,
    "operator": 43,
    "segs": [
        {
            "type": 4,
            "paths": [
                {
                    "type": 1,
                    "value": "num"
                }
            ]
        },
        {
            "type": 2,
            "value": 1
        }
    ]
}
*/

pack

将 ANode 压缩成 APack。

pack({ANode}source): {Array}

const aNodeUtils = require('san-anode-utils');

let aNode = aNodeUtils.parseTemplate('<p>Hello {{name}}</p>');
let aPack = aNodeUtils.pack(aNode.children[0]);
/* aPack
[
    1,
    "p",
    1,
    undefined,
    9,
    undefined,
    2,
    3,
    "Hello ",
    7,
    undefined,
    6,
    1,
    3,
    "name",
    undefined
]
*/

pack.stringify

将 APack 转换成字符串。

pack.stringify({ANode}source): {Array}

const aNodeUtils = require('san-anode-utils');

let aNode = aNodeUtils.parseTemplate('<p>Hello {{name}}</p>');
let aPack = aNodeUtils.pack(aNode.children[0]);
let aPackString = aNodeUtils.pack.stringify(aPack);
/* aPackString
[1,"p",1,,9,,2,3,"Hello ",7,,6,1,3,"name",]
*/

unpack

将 APack 解压缩成 ANode。

unpack({Array}aPack): {ANode}

const aNodeUtils = require('san-anode-utils');

let aNode = aNodeUtils.unpack([1,"p",1,,9,,2,3,"Hello ",7,,6,1,3,"name",]);
/* aNode
{
    "directives": {},
    "props": [],
    "events": [],
    "children": [
        {
            "textExpr": {
                "type": 7,
                "segs": [
                    {
                        "type": 1,
                        "value": "Hello "
                    },
                    {
                        "type": 5,
                        "expr": {
                            "type": 4,
                            "paths": [
                                {
                                    "type": 1,
                                    "value": "name"
                                }
                            ]
                        },
                        "filters": []
                    }
                ]
            }
        }
    ],
    "tagName": "p"
}
*/

License

san-anode-utils is MIT licensed.