all files / src/ AttributeValueParser.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const nearley = require("nearley");
const grammar = require("./grammar/attrvalue");
class AttributeValueParser {
    constructor(plainHtml) {
        // support for normal html instead of dynamic attribute expressions.
        this.plainHtml = plainHtml;
    }
    parse(attrNamespace, attrName, value) {
        let whitespaceDelimited = attrName === "class" && !attrNamespace;
        Iif (attrName.match(/^on/) || value.startsWith("javascript:")) {
            return { absent: true };
        }
        else if (isTextAttribute(attrNamespace, attrName, value)) {
            return { constant: value };
        }
        Iif (!whitespaceDelimited && this.plainHtml) {
            return { constant: value };
        }
        let startProduction = whitespaceDelimited ? "whitespaceDelimitedAttribute" : "attribute";
        let grammarObj = nearley.Grammar.fromCompiled(grammar);
        grammarObj.start = startProduction; // because this api is stupid.
        let parser = new nearley.Parser(grammarObj);
        parser.feed(value);
        let res = parser.finish();
        return res[0];
    }
}
exports.AttributeValueParser = AttributeValueParser;
function isTextAttribute(_attrNamespace, attrName, _value) {
    return ["title", "media", "content", "style"].indexOf(attrName) !== -1;
}
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