prism-code-editor/dist/extensions/matchBrackets/index.js

Lightweight, extensible code editor component for the web using Prism

import { t as testBracket } from "../../bracket-BPYnIBjq.js";
const matchBrackets = (rainbowBrackets = true, pairs = "()[]{}") => {
  let bracketIndex;
  let sp;
  const stack = [];
  const self = (editor) => {
    editor.extensions.matchBrackets = self;
    editor.on("tokenize", matchBrackets2);
    if (rainbowBrackets && editor.tokens[0]) editor.update();
    else matchBrackets2(editor.tokens);
  };
  const brackets = self.brackets = [];
  const pairMap = self.pairs = [];
  const matchBrackets2 = (tokens) => {
    pairMap.length = brackets.length = sp = bracketIndex = 0;
    matchRecursive(tokens, 0);
    if (rainbowBrackets) {
      for (let i = 0, bracket; bracket = brackets[i]; ) {
        let alias = bracket[0].alias;
        bracket[0].alias = (alias ? alias + " " : "") + `bracket-${i++ in pairMap ? "level-" + bracket[3] % 12 : "error"}`;
      }
    }
  };
  const matchRecursive = (tokens, position) => {
    let token;
    let i = 0;
    for (; token = tokens[i++]; ) {
      let length = token.length;
      if (typeof token != "string") {
        let content = token.content;
        if (Array.isArray(content)) {
          matchRecursive(content, position);
        } else if ((token.alias || token.type) == "punctuation") {
          let bracketType = testBracket(content, pairs, length - 1);
          let isOpening = bracketType % 2;
          if (bracketType) {
            brackets[bracketIndex] = [token, position, position + length, sp, content, !!isOpening];
            if (isOpening) stack[sp++] = [bracketIndex, bracketType + 1];
            else {
              for (let i2 = sp, entry; entry = stack[--i2]; ) {
                if (bracketType == entry[1]) {
                  pairMap[pairMap[bracketIndex] = entry[0]] = bracketIndex;
                  brackets[bracketIndex][3] = sp = i2;
                  break;
                }
              }
            }
            bracketIndex++;
          }
        }
      }
      position += length;
    }
  };
  return self;
};
export {
  matchBrackets
};
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