add initial marp implementation with sample content and build configuration

node_modules/mathjax-full/ts/input/tex/centernot/CenternotConfiguration.ts

@@ -0,0 +1,81 @@
+/*************************************************************
+ *
+ *  Copyright (c) 2021-2022 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+
+/**
+ * @fileoverview Configuration file for the centernot package.
+ *
+ * @author dpvc@mathjax.org (Davide P. Cervone)
+ */
+
+import {Configuration} from '../Configuration.js';
+import ParseOptions from '../ParseOptions.js';
+import TexParser from '../TexParser.js';
+import NodeUtil from '../NodeUtil.js';
+import {CommandMap} from '../SymbolMap.js';
+import {MmlNode} from '../../../core/MmlTree/MmlNode.js';
+import BaseMethods from '../base/BaseMethods.js';
+
+new CommandMap('centernot', {
+  centerOver: 'CenterOver',
+  centernot: ['Macro', '\\centerOver{#1}{{\u29F8}}', 1]
+}, {
+  /**
+   * Implements \centerOver{base}{symbol}
+   *
+   * @param {TexParser} parser   The active tex parser.
+   * @param {string} name        The name of the macro being processed.
+   */
+  CenterOver(parser: TexParser, name: string) {
+    const arg = '{' + parser.GetArgument(name) + '}';
+    const over = parser.ParseArg(name);
+    const base = new TexParser(arg, parser.stack.env, parser.configuration).mml();
+    let mml = parser.create('node', 'TeXAtom', [
+      new TexParser(arg, parser.stack.env, parser.configuration).mml(),
+      parser.create('node', 'mpadded', [
+        parser.create('node', 'mpadded', [over], {width: 0, lspace: '-.5width'}),
+        parser.create('node', 'mphantom', [base])
+      ], {width: 0, lspace: '-.5width'})
+    ]);
+    parser.configuration.addNode('centerOver', base);
+    parser.Push(mml);
+  },
+  Macro: BaseMethods.Macro
+});
+
+/**
+ * Filter to copy texClass to the surrounding TeXAtom so that the negated
+ *   item has the same class of the base.
+ *
+ * @param {ParseOptions} data   The active tex parser.
+ */
+export function filterCenterOver({data}: {data: ParseOptions}) {
+  for (const base of data.getList('centerOver')) {
+    const texClass = NodeUtil.getTexClass(base.childNodes[0].childNodes[0] as MmlNode);
+    if (texClass !== null) {
+      NodeUtil.setProperties(base.parent.parent.parent.parent.parent.parent, {texClass});
+    }
+  }
+}
+
+
+export const CenternotConfiguration = Configuration.create(
+  'centernot', {
+    handler: {macro: ['centernot']},
+    postprocessors: [filterCenterOver]
+  }
+);