Echo/node_modules/@vue/babel-plugin-jsx/dist/transform-vue-jsx.js
2021-02-11 21:31:41 +08:00

163 lines
7.1 KiB
JavaScript

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.transformJSXElement = void 0;
const t = __importStar(require("@babel/types"));
const utils_1 = require("./utils");
const buildProps_1 = __importDefault(require("./buildProps"));
/**
* Get children from Array of JSX children
* @param paths Array<JSXText | JSXExpressionContainer | JSXElement | JSXFragment>
* @returns Array<Expression | SpreadElement>
*/
const getChildren = (paths, state) => paths
.map((path) => {
if (path.isJSXText()) {
const transformedText = utils_1.transformJSXText(path);
if (transformedText) {
return t.callExpression(utils_1.createIdentifier(state, 'createTextVNode'), [transformedText]);
}
return transformedText;
}
if (path.isJSXExpressionContainer()) {
const expression = utils_1.transformJSXExpressionContainer(path);
if (t.isIdentifier(expression)) {
const { name } = expression;
const { referencePaths = [] } = path.scope.getBinding(name) || {};
referencePaths.forEach((referencePath) => {
utils_1.walksScope(referencePath, name, 2 /* DYNAMIC */);
});
}
return expression;
}
if (t.isJSXSpreadChild(path)) {
return utils_1.transformJSXSpreadChild(path);
}
if (path.isCallExpression()) {
return path.node;
}
if (path.isJSXElement()) {
return transformJSXElement(path, state);
}
throw new Error(`getChildren: ${path.type} is not supported`);
}).filter(((value) => (value !== undefined
&& value !== null
&& !t.isJSXEmptyExpression(value))));
const transformJSXElement = (path, state) => {
const children = getChildren(path.get('children'), state);
const { tag, props, isComponent, directives, patchFlag, dynamicPropNames, slots, } = buildProps_1.default(path, state);
const { optimize = false } = state.opts;
const slotFlag = path.getData('slotFlag') || 1 /* STABLE */;
let VNodeChild;
if (children.length > 1 || slots) {
/*
<A v-slots={slots}>{a}{b}</A>
---> {{ default: () => [a, b], ...slots }}
---> {[a, b]}
*/
VNodeChild = isComponent ? t.objectExpression([
!!children.length && t.objectProperty(t.identifier('default'), t.arrowFunctionExpression([], t.arrayExpression(utils_1.buildIIFE(path, children)))),
...(slots ? (t.isObjectExpression(slots)
? slots.properties
: [t.spreadElement(slots)]) : []),
optimize && t.objectProperty(t.identifier('_'), t.numericLiteral(slotFlag)),
].filter(Boolean)) : t.arrayExpression(children);
}
else if (children.length === 1) {
/*
<A>{a}</A> or <A>{() => a}</A>
*/
const { enableObjectSlots = true } = state.opts;
const child = children[0];
const objectExpression = t.objectExpression([
t.objectProperty(t.identifier('default'), t.arrowFunctionExpression([], t.arrayExpression(utils_1.buildIIFE(path, [child])))),
optimize && t.objectProperty(t.identifier('_'), t.numericLiteral(slotFlag)),
].filter(Boolean));
if (t.isIdentifier(child) && isComponent) {
VNodeChild = enableObjectSlots ? t.conditionalExpression(t.callExpression(state.get('@vue/babel-plugin-jsx/runtimeIsSlot')(), [child]), child, objectExpression) : objectExpression;
}
else if (t.isCallExpression(child) && child.loc && isComponent) { // the element was generated and doesn't have location information
if (enableObjectSlots) {
const { scope } = path;
const slotId = scope.generateUidIdentifier('slot');
if (scope) {
scope.push({
id: slotId,
kind: 'let',
});
}
const alternate = t.objectExpression([
t.objectProperty(t.identifier('default'), t.arrowFunctionExpression([], t.arrayExpression(utils_1.buildIIFE(path, [slotId])))),
optimize && t.objectProperty(t.identifier('_'), t.numericLiteral(slotFlag)),
].filter(Boolean));
const assignment = t.assignmentExpression('=', slotId, child);
const condition = t.callExpression(state.get('@vue/babel-plugin-jsx/runtimeIsSlot')(), [assignment]);
VNodeChild = t.conditionalExpression(condition, slotId, alternate);
}
else {
VNodeChild = objectExpression;
}
}
else if (t.isFunctionExpression(child) || t.isArrowFunctionExpression(child)) {
VNodeChild = t.objectExpression([
t.objectProperty(t.identifier('default'), child),
]);
}
else if (t.isObjectExpression(child)) {
VNodeChild = t.objectExpression([
...child.properties,
optimize && t.objectProperty(t.identifier('_'), t.numericLiteral(slotFlag)),
].filter(Boolean));
}
else {
VNodeChild = isComponent ? t.objectExpression([
t.objectProperty(t.identifier('default'), t.arrowFunctionExpression([], t.arrayExpression([child]))),
]) : t.arrayExpression([child]);
}
}
const createVNode = t.callExpression(utils_1.createIdentifier(state, 'createVNode'), [
tag,
props,
VNodeChild || t.nullLiteral(),
!!patchFlag && optimize && t.numericLiteral(patchFlag),
!!dynamicPropNames.size && optimize
&& t.arrayExpression([...dynamicPropNames.keys()].map((name) => t.stringLiteral(name))),
].filter(Boolean));
if (!directives.length) {
return createVNode;
}
return t.callExpression(utils_1.createIdentifier(state, 'withDirectives'), [
createVNode,
t.arrayExpression(directives),
]);
};
exports.transformJSXElement = transformJSXElement;
exports.default = ({
JSXElement: {
exit(path, state) {
path.replaceWith(transformJSXElement(path, state));
},
},
});