96 lines
3.1 KiB
TypeScript
96 lines
3.1 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 mhchem package.
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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} from '../Configuration.js';
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import {CommandMap} from '../SymbolMap.js';
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import {ParseMethod} from '../Types.js';
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import TexError from '../TexError.js';
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import TexParser from '../TexParser.js';
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import BaseMethods from '../base/BaseMethods.js';
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import {AmsMethods} from '../ams/AmsMethods.js';
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import {mhchemParser} from 'mhchemparser/dist/mhchemParser.js';
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// Namespace
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let MhchemMethods: Record<string, ParseMethod> = {};
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MhchemMethods.Macro = BaseMethods.Macro;
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MhchemMethods.xArrow = AmsMethods.xArrow;
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/**
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* @param{TeXParser} parser The parser for this expression
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* @param{string} name The macro name being called
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* @param{string} machine The name of the fininte-state machine to use
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*/
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MhchemMethods.Machine = function(parser: TexParser, name: string, machine: 'tex' | 'ce' | 'pu') {
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let arg = parser.GetArgument(name);
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let tex;
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try {
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tex = mhchemParser.toTex(arg, machine);
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} catch (err) {
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throw new TexError(err[0], err[1]);
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}
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parser.string = tex + parser.string.substr(parser.i);
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parser.i = 0;
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};
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new CommandMap(
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'mhchem', {
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ce: ['Machine', 'ce'],
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pu: ['Machine', 'pu'],
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longrightleftharpoons: [
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'Macro',
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'\\stackrel{\\textstyle{-}\\!\\!{\\rightharpoonup}}{\\smash{{\\leftharpoondown}\\!\\!{-}}}'
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],
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longRightleftharpoons: [
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'Macro',
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'\\stackrel{\\textstyle{-}\\!\\!{\\rightharpoonup}}{\\smash{\\leftharpoondown}}'
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],
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longLeftrightharpoons: [
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'Macro',
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'\\stackrel{\\textstyle\\vphantom{{-}}{\\rightharpoonup}}{\\smash{{\\leftharpoondown}\\!\\!{-}}}'
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],
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longleftrightarrows: [
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'Macro',
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'\\stackrel{\\longrightarrow}{\\smash{\\longleftarrow}\\Rule{0px}{.25em}{0px}}'
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],
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//
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// Needed for \bond for the ~ forms
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//
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tripledash: [
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'Macro',
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'\\vphantom{-}\\raise2mu{\\kern2mu\\tiny\\text{-}\\kern1mu\\text{-}\\kern1mu\\text{-}\\kern2mu}'
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],
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xleftrightarrow: ['xArrow', 0x2194, 6, 6],
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xrightleftharpoons: ['xArrow', 0x21CC, 5, 7], // FIXME: doesn't stretch in HTML-CSS output
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xRightleftharpoons: ['xArrow', 0x21CC, 5, 7], // FIXME: how should this be handled?
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xLeftrightharpoons: ['xArrow', 0x21CC, 5, 7]
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},
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MhchemMethods
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);
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export const MhchemConfiguration = Configuration.create(
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'mhchem', {handler: {macro: ['mhchem']}}
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);
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