93 lines
3 KiB
TypeScript
93 lines
3 KiB
TypeScript
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/*************************************************************
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*
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* Copyright (c) 2018-2022 The MathJax Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview Configuration file for the extpfeil package. Note that this is
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* based on AMS package and Newcommand utilities.
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*
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* @author v.sorge@mathjax.org (Volker Sorge)
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*/
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import {Configuration, ParserConfiguration} from '../Configuration.js';
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import TexParser from '../TexParser.js';
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import {CommandMap} from '../SymbolMap.js';
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import {ParseMethod} from '../Types.js';
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import {AmsMethods} from '../ams/AmsMethods.js';
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import NewcommandUtil from '../newcommand/NewcommandUtil.js';
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import {NewcommandConfiguration} from '../newcommand/NewcommandConfiguration.js';
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import TexError from '../TexError.js';
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// Namespace
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export let ExtpfeilMethods: Record<string, ParseMethod> = {};
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ExtpfeilMethods.xArrow = AmsMethods.xArrow;
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/**
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* Implements \Newextarrow to define a new arrow.
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* @param {TexParser} parser The current tex parser.
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* @param {string} name The name of the calling macro.
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*/
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ExtpfeilMethods.NewExtArrow = function(parser: TexParser, name: string) {
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let cs = parser.GetArgument(name);
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const space = parser.GetArgument(name);
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const chr = parser.GetArgument(name);
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if (!cs.match(/^\\([a-z]+|.)$/i)) {
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throw new TexError('NewextarrowArg1',
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'First argument to %1 must be a control sequence name', name);
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}
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if (!space.match(/^(\d+),(\d+)$/)) {
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throw new TexError(
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'NewextarrowArg2',
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'Second argument to %1 must be two integers separated by a comma',
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name);
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}
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if (!chr.match(/^(\d+|0x[0-9A-F]+)$/i)) {
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throw new TexError(
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'NewextarrowArg3',
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'Third argument to %1 must be a unicode character number',
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name);
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}
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cs = cs.substr(1);
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let spaces = space.split(',');
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NewcommandUtil.addMacro(parser, cs, ExtpfeilMethods.xArrow,
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[parseInt(chr), parseInt(spaces[0]), parseInt(spaces[1])]);
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};
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new CommandMap('extpfeil', {
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xtwoheadrightarrow: ['xArrow', 0x21A0, 12, 16],
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xtwoheadleftarrow: ['xArrow', 0x219E, 17, 13],
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xmapsto: ['xArrow', 0x21A6, 6, 7],
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xlongequal: ['xArrow', 0x003D, 7, 7],
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xtofrom: ['xArrow', 0x21C4, 12, 12],
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Newextarrow: 'NewExtArrow'
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}, ExtpfeilMethods);
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let init = function(config: ParserConfiguration) {
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NewcommandConfiguration.init(config);
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};
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export const ExtpfeilConfiguration = Configuration.create(
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'extpfeil', {
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handler: {macro: ['extpfeil']},
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init: init
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}
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);
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