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compositeType.ts
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226 lines (195 loc) · 5.95 KB
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import {
CompositeArray,
CompositeValue,
CompositeObject,
JSFunction,
JSExpression,
isJSExpression,
isJSFunction,
isJSSlot,
JSSlot,
} from '@alilc/lowcode-types';
import _ from 'lodash';
import { IScope, CompositeValueGeneratorOptions, CodeGeneratorError } from '../types';
import { generateExpression, generateFunction } from './jsExpression';
import { generateJsSlot } from './jsSlot';
import { executeFunctionStack } from './aopHelper';
import { parseExpressionGetKeywords } from './expressionParser';
interface ILegaoVariable {
type: 'variable';
value: string;
variable: string;
}
function isVariable(v: any): v is ILegaoVariable {
if (_.isObject(v) && (v as ILegaoVariable).type === 'variable') {
return true;
}
return false;
}
interface DataSource {
type: 'DataSource';
id: string;
}
/**
* 判断是否是数据源类型
*/
function isDataSource(v: unknown): v is DataSource {
return typeof v === 'object' && v != null && (v as Partial<DataSource>).type === 'DataSource';
}
function generateArray(
value: CompositeArray,
scope: IScope,
options: CompositeValueGeneratorOptions = {},
): string {
const body = value.map((v) => generateUnknownType(v, scope, options)).join(',');
return `[${body}]`;
}
function generateObject(
value: CompositeObject,
scope: IScope,
options: CompositeValueGeneratorOptions = {},
): string {
if (value.type === 'i18n') {
// params 可能会绑定变量，这里需要处理下
if (value.params && typeof value.params === 'object') {
return `this._i18nText(${generateUnknownType(_.omit(value, 'type'), scope, options)})`;
}
return `this._i18nText(${JSON.stringify(_.omit(value, 'type'))})`; // TODO: 优化：这里可以考虑提取成个常量...
}
const body = Object.keys(value)
.map((key) => {
const propName = JSON.stringify(key);
const v = generateUnknownType(value[key], scope, options);
return `${propName}: ${v}`;
})
.join(',\n');
return `{${body}}`;
}
function generateString(value: string): string {
// 有的字符串里面会有特殊字符，比如换行或引号之类的，这里我们借助 JSON 的字符串转义功能来做下转义并加上双引号
return JSON.stringify(value);
}
function generateNumber(value: number): string {
return String(value);
}
function generateBool(value: boolean): string {
return value ? 'true' : 'false';
}
function genFunction(value: JSFunction): string {
const globalVars = parseExpressionGetKeywords(value.value);
if (globalVars.includes('arguments')) {
return generateFunction(value, { isBindExpr: true });
}
return generateFunction(value, { isArrow: true });
}
function genJsSlot(value: JSSlot, scope: IScope, options: CompositeValueGeneratorOptions = {}) {
if (options.nodeGenerator) {
return generateJsSlot(value, scope, options.nodeGenerator);
}
return '';
}
function generateUnknownType(
value: CompositeValue,
scope: IScope,
options: CompositeValueGeneratorOptions = {},
): string {
if (_.isUndefined(value)) {
return 'undefined';
}
if (_.isNull(value)) {
return 'null';
}
if (_.isArray(value)) {
if (options.handlers?.array) {
return executeFunctionStack(value, scope, options.handlers.array, generateArray, options);
}
return generateArray(value, scope, options);
}
// FIXME: 这个是临时方案
// 在遇到 type variable 私有类型时，转换为 JSExpression
if (isVariable(value)) {
const transValue: JSExpression = {
type: 'JSExpression',
value: value.variable,
};
if (options.handlers?.expression) {
return executeFunctionStack(
transValue,
scope,
options.handlers.expression,
generateExpression,
options,
);
}
return generateExpression(transValue, scope);
}
if (isJSExpression(value)) {
if (options.handlers?.expression) {
return executeFunctionStack(
value,
scope,
options.handlers.expression,
generateExpression,
options,
);
}
return generateExpression(value, scope);
}
if (isJSFunction(value)) {
if (options.handlers?.function) {
return executeFunctionStack(value, scope, options.handlers.function, genFunction, options);
}
return genFunction(value);
}
if (isJSSlot(value)) {
if (options.handlers?.slot) {
return executeFunctionStack(value, scope, options.handlers.slot, genJsSlot, options);
}
return genJsSlot(value, scope, options);
}
if (isDataSource(value)) {
return generateUnknownType(
{
type: 'JSExpression',
value: `this.dataSourceMap[${JSON.stringify(value.id)}]`,
},
scope,
options,
);
}
if (_.isObject(value)) {
if (options.handlers?.object) {
return executeFunctionStack(value, scope, options.handlers.object, generateObject, options);
}
return generateObject(value as CompositeObject, scope, options);
}
if (_.isString(value)) {
if (options.handlers?.string) {
return executeFunctionStack(value, scope, options.handlers.string, generateString, options);
}
return generateString(value);
}
if (_.isNumber(value)) {
if (options.handlers?.number) {
return executeFunctionStack(value, scope, options.handlers.number, generateNumber, options);
}
return generateNumber(value);
}
if (_.isBoolean(value)) {
if (options.handlers?.boolean) {
return executeFunctionStack(value, scope, options.handlers.boolean, generateBool, options);
}
return generateBool(value);
}
throw new CodeGeneratorError('Meet unknown composite value type');
}
// 这一层曾经是对产出做最外层包装的，但其实包装逻辑不应该属于这一层
// 这一层先不去掉，做冗余，方便后续重构
export function generateCompositeType(
value: CompositeValue,
scope: IScope,
options: CompositeValueGeneratorOptions = {},
): string {
const result = generateUnknownType(value, scope, options);
return result;
}