mathoid-texvcjs/lib/texvcinfo.js

A TeX/LaTeX validator for MediaWiki.

'use strict';

// Contains the index functionalities from former texvcinfo class.
const Parser = require('./parser');

const lister = module.exports.tokensFromAst = require('./flatList');
const treeWriter = module.exports.treeFromAst = require('./arrayTree');
const jsonWriter = module.exports.treeFromAst = require('./d3json');

module.exports.texvcinfo = function (input, options) {
    try {
        // allow user to pass a parsed AST as input, as well as a string
        if (typeof (input) === 'string') {
            input =  Parser.parse(input);
        }
        let output;
        if (!options) {
            options = { format: 'list' };
        }
        switch (options.format) {
            case 'tree':
                output = treeWriter(input, options.compact);
                break;
            case 'json':
                output = jsonWriter(input, options.flatTree);
                break;
            case 'identifier':
                output = input.extractIdentifiers();
                break;
            case 'all':
                output = {
                    tree: treeWriter(input, options.compact),
                    identifier: input.extractIdentifiers(),
                    list: lister(input, options.compact)
                };
                break;
            default:
                output = lister(input, options.compact);
        }
        return output;
    } catch (e) {
        if (options && options.debug) {
            throw e;
        }
        if (e instanceof Parser.SyntaxError) {
            if (e.message === 'Illegal TeX function') {
                return {
                    status: 'F', details: e.found,
                    offset: e.offset, line: e.line, column: e.column
                };
            }
            return {
                status: 'S', details: e.toString(),
                offset: e.offset, line: e.line, column: e.column
            };
        }
        return { status: '-', details: e.toString() };
    }
};