salve-annos/lib/salve/conversion/simplifier/step9.js

A fork with support for documentation of Salve, a Javascript library which implements a validator able to validate an XML document on the basis of a subset of RelaxNG.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.step9 = step9;
/**
 * Simplification step 9.
 * @author Louis-Dominique Dubeau
 * @license MPL 2.0
 * @copyright 2013, 2014 Mangalam Research Center for Buddhist Languages
 */
const parser_1 = require("../parser");
/**
 * Implements step 9 of the XSL pipeline. Namely:
 *
 * - ``div`` elements are replaced with their children.
 *
 * @param el The tree to process. It is modified in-place.
 *
 * @returns The new root of the tree.
 */
function step9(el) {
    // We walk the children first so that subtrees are modified first.
    for (let ix = 0; ix < el.children.length; ++ix) {
        const child = el.children[ix];
        if ((0, parser_1.isElement)(child)) {
            if (child.local === "div") {
                if (child.children.length > 0) {
                    el.insertAt(ix + 1, child.children.slice());
                }
                el.removeChildAt(ix);
                // Go back, and process what is the new child at the location where the
                // div was.
                --ix;
            }
            else {
                step9(child);
            }
        }
    }
    return el;
}
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