site/node_modules/mathjax-full/ts/input/tex/boldsymbol/BoldsymbolConfiguration.ts

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/*************************************************************
*
* 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 boldsymbol package.
*
* @author v.sorge@mathjax.org (Volker Sorge)
*/
import {MmlNode} from '../../../core/MmlTree/MmlNode.js';
import {Configuration} from '../Configuration.js';
import NodeUtil from '../NodeUtil.js';
import TexParser from '../TexParser.js';
import {TexConstant} from '../TexConstants.js';
import {CommandMap} from '../SymbolMap.js';
import {ParseMethod} from '../Types.js';
import {NodeFactory} from '../NodeFactory.js';
import ParseOptions from '../ParseOptions.js';
let BOLDVARIANT: {[key: string]: string} = {};
BOLDVARIANT[TexConstant.Variant.NORMAL] = TexConstant.Variant.BOLD;
BOLDVARIANT[TexConstant.Variant.ITALIC] = TexConstant.Variant.BOLDITALIC;
BOLDVARIANT[TexConstant.Variant.FRAKTUR] = TexConstant.Variant.BOLDFRAKTUR;
BOLDVARIANT[TexConstant.Variant.SCRIPT] = TexConstant.Variant.BOLDSCRIPT;
BOLDVARIANT[TexConstant.Variant.SANSSERIF] = TexConstant.Variant.BOLDSANSSERIF;
BOLDVARIANT['-tex-calligraphic'] = '-tex-bold-calligraphic';
BOLDVARIANT['-tex-oldstyle'] = '-tex-bold-oldstyle';
BOLDVARIANT['-tex-mathit'] = TexConstant.Variant.BOLDITALIC;
// Namespace
export let BoldsymbolMethods: Record<string, ParseMethod> = {};
/**
* Parse function for boldsymbol macro.
* @param {TexParser} parser The current tex parser.
* @param {string} name The name of the macro.
*/
BoldsymbolMethods.Boldsymbol = function(parser: TexParser, name: string) {
let boldsymbol = parser.stack.env['boldsymbol'];
parser.stack.env['boldsymbol'] = true;
let mml = parser.ParseArg(name);
parser.stack.env['boldsymbol'] = boldsymbol;
parser.Push(mml);
};
new CommandMap('boldsymbol', {boldsymbol: 'Boldsymbol'}, BoldsymbolMethods);
/**
* Creates token nodes in bold font if possible.
* @param {NodeFactory} factory The current node factory.
* @param {string} kind The type of token node to create.
* @param {any} def Properties for the node.
* @param {string} text The text content.
* @return {MmlNode} The generated token node.
*/
export function createBoldToken(factory: NodeFactory, kind: string,
def: any, text: string): MmlNode {
let token = NodeFactory.createToken(factory, kind, def, text);
if (kind !== 'mtext' &&
factory.configuration.parser.stack.env['boldsymbol']) {
NodeUtil.setProperty(token, 'fixBold', true);
factory.configuration.addNode('fixBold', token);
}
return token;
}
/**
* Postprocessor to rewrite token nodes to bold font, if possible.
* @param {ParseOptions} data The parse options.
*/
export function rewriteBoldTokens(arg: {data: ParseOptions}) {
for (let node of arg.data.getList('fixBold')) {
if (NodeUtil.getProperty(node, 'fixBold')) {
let variant = NodeUtil.getAttribute(node, 'mathvariant') as string;
if (variant == null) {
NodeUtil.setAttribute(node, 'mathvariant', TexConstant.Variant.BOLD);
} else {
NodeUtil.setAttribute(node,
'mathvariant', BOLDVARIANT[variant] || variant);
}
NodeUtil.removeProperties(node, 'fixBold');
}
}
}
export const BoldsymbolConfiguration = Configuration.create(
'boldsymbol', {
handler: {macro: ['boldsymbol']},
nodes: {'token': createBoldToken},
postprocessors: [rewriteBoldTokens]
}
);