Util Functions for San ANode. 和 San ANode 相关的功能函数集。
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。
$ npm i --save san-anode-utils
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
};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"
}
]
}
*/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"
}
*/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({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
]
*/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({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"
}
*/san-anode-utils is MIT licensed.