add initial marp implementation with sample content and build configuration

node_modules/mathjax-full/ts/input/tex/cancel/CancelConfiguration.ts

@@ -0,0 +1,87 @@
+/*************************************************************
+ *
+ *  Copyright (c) 2018-2022 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 cancel package.
+ *
+ * @author v.sorge@mathjax.org (Volker Sorge)
+ */
+
+import {Configuration} from '../Configuration.js';
+import TexParser from '../TexParser.js';
+import {TexConstant} from '../TexConstants.js';
+import {CommandMap} from '../SymbolMap.js';
+import {ParseMethod} from '../Types.js';
+import ParseUtil from '../ParseUtil.js';
+import {ENCLOSE_OPTIONS} from '../enclose/EncloseConfiguration.js';
+
+
+// Namespace
+export let CancelMethods: Record<string, ParseMethod> = {};
+
+
+/**
+ * Parse function for cancel macros of the form \(b|x)?cancel[attributes]{math}
+ * @param {TexParser} parser The current tex parser.
+ * @param {string} name The name of the calling macro.
+ * @param {string} notation The type of cancel notation to use.
+ */
+CancelMethods.Cancel = function(parser: TexParser, name: string, notation: string) {
+  const attr = parser.GetBrackets(name, '');
+  const math = parser.ParseArg(name);
+  const def = ParseUtil.keyvalOptions(attr, ENCLOSE_OPTIONS);
+  def['notation'] = notation;
+  parser.Push(parser.create('node', 'menclose', [math], def));
+};
+
+
+/**
+ * Parse function implementing \cancelto{value}[attributes]{math}
+ * @param {TexParser} parser The current tex parser.
+ * @param {string} name The name of the calling macro.
+ */
+
+CancelMethods.CancelTo = function(parser: TexParser, name: string) {
+  const attr = parser.GetBrackets(name, '');
+  let value = parser.ParseArg(name);
+  const math = parser.ParseArg(name);
+  const def = ParseUtil.keyvalOptions(attr, ENCLOSE_OPTIONS);
+  def ['notation'] = [TexConstant.Notation.UPDIAGONALSTRIKE,
+                      TexConstant.Notation.UPDIAGONALARROW,
+                      TexConstant.Notation.NORTHEASTARROW].join(' ');
+  value = parser.create('node', 'mpadded', [value],
+                        {depth: '-.1em', height: '+.1em', voffset: '.1em'});
+  parser.Push(parser.create('node', 'msup',
+                            [parser.create('node', 'menclose', [math], def), value]));
+};
+
+
+new CommandMap('cancel', {
+  cancel:   ['Cancel', TexConstant.Notation.UPDIAGONALSTRIKE],
+  bcancel:  ['Cancel', TexConstant.Notation.DOWNDIAGONALSTRIKE],
+  xcancel:  ['Cancel', TexConstant.Notation.UPDIAGONALSTRIKE + ' ' +
+             TexConstant.Notation.DOWNDIAGONALSTRIKE],
+  cancelto: 'CancelTo'
+}, CancelMethods);
+
+
+export const CancelConfiguration = Configuration.create(
+  'cancel', {handler: {macro: ['cancel']}}
+);
+
+