@farris/expression-engine-vue/lib/expression/expression.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Expression = void 0;
/* eslint-disable @typescript-eslint/ban-types */
const index_1 = require("../compiler/index");
const index_2 = require("../evaler/index");
const index_3 = require("../function/index");
class Expression {
    constructor(expr, context) {
        this.factory = null;
        this.expr = expr;
        this.context = context;
    }
    /**
     * 执行表达式
     * @param context
     * @returns
     */
    eval(context) {
        context = context || this.context;
        const args = context && context.contexts && context.contexts.arguments || {};
        if (this.factory) {
            const ctx = this.buildContext(context);
            const result = this.factory(ctx === null || ctx === void 0 ? void 0 : ctx.contexts)(args);
            return result;
        }
        const evaler = new index_2.Evaler();
        const factory = evaler.eval(this.expr, context);
        const result = factory(...Object.values(args));
        return result;
    }
    /**
     * 编译表达式
     * @param context 上下文
     * @returns
     */
    compile(context) {
        context = context || this.context;
        const compiler = new index_1.Compiler();
        this.factory = compiler.compile(this.expr, context);
        return this;
    }
    buildContext(context) {
        const contexts = context && context.contexts || {};
        const defaultFunction = new index_3.DefaultFunctions(context);
        contexts.DefaultFunction = defaultFunction;
        return context;
    }
}
exports.Expression = Expression;