mathsteps-experimental-fork/dist/es/lib/util/regex.js

Step by step math solutions. Experimental Fork

function makeExtendedRegExp(inputPatternStr, flags) {
  const cleanedPatternStr = inputPatternStr.replace(/(^|[^\\])#.*/g, "$1").replace(/(^|[^\\])\s+/g, "$1");
  return new RegExp(cleanedPatternStr, flags);
}
const RGIntOrDecimal = makeExtendedRegExp(String.raw`
  \d+         # Match one or more digits (integer part)
  (?:\.\d+)?  # Optionally match a decimal point followed by digits
`, "g");
const RGVariable = makeExtendedRegExp(String.raw`
  [a-zA-Z]   # Match one alphabetic characters
`, "g");
const RGOptionalVariable = makeExtendedRegExp(String.raw`
  [a-zA-Z]?   # Match one alphabetic characters or none
`, "g");
const RGNumbersAndOrVar = makeExtendedRegExp(String.raw`
  (?:${RGIntOrDecimal.source}${RGOptionalVariable.source})
  |
  (?:${RGVariable.source})
`, "g");
const RGFraction = makeExtendedRegExp(String.raw`
(?:(${RGNumbersAndOrVar.source})\/)+(${RGNumbersAndOrVar.source})
`, "g");

export { RGFraction, RGIntOrDecimal, RGNumbersAndOrVar, RGOptionalVariable, RGVariable, makeExtendedRegExp };