njseries_03_07.js

compile(file){
        let ast = this.parse(this._tokenize(this._readTmplSource(file)))
        return ast  
    } 

    _tokenize(templateTxt){
        const token_regex = /({{.*?}}|{%.*?%})/
        return templateTxt.split(token_regex).filter( match => {
            return match.trim() !== ''
        })
    }
    
    parse(tokens){
        this._parser = {
            templater: this,
            tokens: tokens,
            pos: 0
        }
        let rootAst = new TemplateNode(this._parser, tokens[0])
        this._parse(rootAst)
        return rootAst
    }