mirror of
https://github.com/Smaug123/KaTeX
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8c55aed39a
* Introduce MacroExpander The job of the MacroExpander is turning a stream of possibly expandable tokens, as obtained from the Lexer, into a stream of non-expandable tokens (in KaTeX, even though they may well be expandable in TeX) which can be processed by the Parser. The challenge here is that we don't have mode-specific lexer implementations any more, so we need to do everything on the token level, including reassembly of sizes and colors. * Make macros available in development server Now one can specify macro definitions like \foo=bar as part of the query string and use these macros in the formula being typeset. * Add tests for macro expansions * Handle end of input in special groups This avoids an infinite loop if input ends prematurely. * Simplify parseSpecialGroup The parseSpecialGroup methos now returns a single token spanning the whole special group, and leaves matching that string against a suitable regular expression to whoever is calling the method. Suggested by @cbreeden. * Incorporate review suggestions Add improvements suggested by Kevin Barabash during review. * Input range sanity checks Ensure that both tokens of a token range come from the same lexer, and that the range has a non-negative length. * Improved wording of two comments
30 lines
823 B
JavaScript
30 lines
823 B
JavaScript
/**
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* This is a module for storing settings passed into KaTeX. It correctly handles
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* default settings.
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*/
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/**
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* Helper function for getting a default value if the value is undefined
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*/
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function get(option, defaultValue) {
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return option === undefined ? defaultValue : option;
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}
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/**
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* The main Settings object
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*
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* The current options stored are:
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* - displayMode: Whether the expression should be typeset by default in
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* textstyle or displaystyle (default false)
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*/
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function Settings(options) {
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// allow null options
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options = options || {};
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this.displayMode = get(options.displayMode, false);
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this.throwOnError = get(options.throwOnError, true);
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this.errorColor = get(options.errorColor, "#cc0000");
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this.macros = options.macros || {};
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}
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module.exports = Settings;
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