nodejs-razor/Processor/File.js

let parser = require("./Parse");
let crypto = require("node:crypto");
let vm = require("node:vm");

module.exports = File;
/**
 * @class File
 */
function File()
{
    this.content = "";
    this.contentmd5 = "";
    this.parsedContent = "";
    this.cachedData = undefined;
};


function sha256(content)
{
    return crypto.createHash("sha256").update(content,'utf-8').digest('hex');
}

File.prototype.build = function(){
    this.contentmd5 = sha256(this.content);
    this.parsedContent = parser(this);
};

File.prototype.isRequiredRebuild = function(content){
    return this.contentmd5 == sha256(content);
};
File.prototype.execute = function(memoriable){
    let output = [];
    let t = new vm.Script(this.parsedContent.ast,{
        cachedData: this.cachedData,
    });
    let content = vm.createContext({
        ...memoriable,
        output,
        echo:(...args) => output.push(...args),
        _external: e => {}
    });
    t.runInContext(content);
    this.cachedData = t.createCachedData();
    return output.join('');
};