thingsboard/ui/node_modules/postcss-scss/lib/scss-tokenize.js

'use strict';

var SINGLE_QUOTE = 39;
var DOUBLE_QUOTE = 34;
var BACKSLASH = 92;
var SLASH = 47;
var NEWLINE = 10;
var SPACE = 32;
var FEED = 12;
var TAB = 9;
var CR = 13;
var OPEN_SQUARE = 91;
var CLOSE_SQUARE = 93;
var OPEN_PARENTHESES = 40;
var CLOSE_PARENTHESES = 41;
var OPEN_CURLY = 123;
var CLOSE_CURLY = 125;
var SEMICOLON = 59;
var ASTERISK = 42;
var COLON = 58;
var AT = 64;

// SCSS PATCH {
var COMMA = 44;
var HASH = 35;
// } SCSS PATCH

var RE_AT_END = /[ \n\t\r\f{}()'"\\;/[\]#]/g;
var RE_WORD_END = /[ \n\t\r\f(){}:;@!'"\\\][#]|\/(?=\*)/g;
var RE_BAD_BRACKET = /.[\\/("'\n]/;
var RE_HEX_ESCAPE = /[a-f0-9]/i;

var RE_NEW_LINE = /[\r\f\n]/g; // SCSS PATCH

// SCSS PATCH function name was changed
module.exports = function scssTokenize(input) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  var css = input.css.valueOf();
  var ignore = options.ignoreErrors;

  var code = void 0,
      next = void 0,
      quote = void 0,
      lines = void 0,
      last = void 0,
      content = void 0,
      escape = void 0,
      nextLine = void 0,
      nextOffset = void 0,
      escaped = void 0,
      prev = void 0,
      n = void 0,
      currentToken = void 0;

  var brackets = void 0; // SCSS PATCH

  var length = css.length;
  var offset = -1;
  var line = 1;
  var pos = 0;
  var buffer = [];
  var returned = [];

  function unclosed(what) {
    throw input.error('Unclosed ' + what, line, pos - offset);
  }

  function endOfFile() {
    return returned.length === 0 && pos >= length;
  }

  // SCSS PATCH {
  function interpolation() {
    var deep = 1;
    var stringQuote = false;
    var stringEscaped = false;
    while (deep > 0) {
      next += 1;
      if (css.length <= next) unclosed('interpolation');

      code = css.charCodeAt(next);
      n = css.charCodeAt(next + 1);

      if (stringQuote) {
        if (!stringEscaped && code === stringQuote) {
          stringQuote = false;
          stringEscaped = false;
        } else if (code === BACKSLASH) {
          stringEscaped = !escaped;
        } else if (stringEscaped) {
          stringEscaped = false;
        }
      } else if (code === SINGLE_QUOTE || code === DOUBLE_QUOTE) {
        stringQuote = code;
      } else if (code === CLOSE_CURLY) {
        deep -= 1;
      } else if (code === HASH && n === OPEN_CURLY) {
        deep += 1;
      }
    }
  }
  // } SCSS PATCH

  function nextToken() {
    if (returned.length) return returned.pop();
    if (pos >= length) return;

    code = css.charCodeAt(pos);
    if (code === NEWLINE || code === FEED || code === CR && css.charCodeAt(pos + 1) !== NEWLINE) {
      offset = pos;
      line += 1;
    }

    switch (code) {
      case NEWLINE:
      case SPACE:
      case TAB:
      case CR:
      case FEED:
        next = pos;
        do {
          next += 1;
          code = css.charCodeAt(next);
          if (code === NEWLINE) {
            offset = next;
            line += 1;
          }
        } while (code === SPACE || code === NEWLINE || code === TAB || code === CR || code === FEED);

        currentToken = ['space', css.slice(pos, next)];
        pos = next - 1;
        break;

      case OPEN_SQUARE:
        currentToken = ['[', '[', line, pos - offset];
        break;

      case CLOSE_SQUARE:
        currentToken = [']', ']', line, pos - offset];
        break;

      case OPEN_CURLY:
        currentToken = ['{', '{', line, pos - offset];
        break;

      case CLOSE_CURLY:
        currentToken = ['}', '}', line, pos - offset];
        break;

      // SCSS PATCH {
      case COMMA:
        currentToken = ['word', ',', line, pos - offset, line, pos - offset + 1];
        break;
      // } SCSS PATCH

      case COLON:
        currentToken = [':', ':', line, pos - offset];
        break;

      case SEMICOLON:
        currentToken = [';', ';', line, pos - offset];
        break;

      case OPEN_PARENTHESES:
        prev = buffer.length ? buffer.pop()[1] : '';
        n = css.charCodeAt(pos + 1);

        // SCSS PATCH {
        if (prev === 'url' && n !== SINGLE_QUOTE && n !== DOUBLE_QUOTE) {
          brackets = 1;
          escaped = false;
          next = pos + 1;
          while (next <= css.length - 1) {
            n = css.charCodeAt(next);
            if (n === BACKSLASH) {
              escaped = !escaped;
            } else if (n === OPEN_PARENTHESES) {
              brackets += 1;
            } else if (n === CLOSE_PARENTHESES) {
              brackets -= 1;
              if (brackets === 0) break;
            }
            next += 1;
          }

          content = css.slice(pos, next + 1);
          lines = content.split('\n');
          last = lines.length - 1;

          if (last > 0) {
            nextLine = line + last;
            nextOffset = next - lines[last].length;
          } else {
            nextLine = line;
            nextOffset = offset;
          }

          currentToken = ['brackets', content, line, pos - offset, nextLine, next - nextOffset];

          offset = nextOffset;
          line = nextLine;
          pos = next;
          // } SCSS PATCH
        } else {
          next = css.indexOf(')', pos + 1);
          content = css.slice(pos, next + 1);

          if (next === -1 || RE_BAD_BRACKET.test(content)) {
            currentToken = ['(', '(', line, pos - offset];
          } else {
            currentToken = ['brackets', content, line, pos - offset, line, next - offset];
            pos = next;
          }
        }

        break;

      case CLOSE_PARENTHESES:
        currentToken = [')', ')', line, pos - offset];
        break;

      case SINGLE_QUOTE:
      case DOUBLE_QUOTE:
        // SCSS PATCH {
        quote = code;
        next = pos;

        escaped = false;
        while (next < length) {
          next++;
          if (next === length) unclosed('string');

          code = css.charCodeAt(next);
          n = css.charCodeAt(next + 1);

          if (!escaped && code === quote) {
            break;
          } else if (code === BACKSLASH) {
            escaped = !escaped;
          } else if (escaped) {
            escaped = false;
          } else if (code === HASH && n === OPEN_CURLY) {
            interpolation();
          }
        }
        // } SCSS PATCH

        content = css.slice(pos, next + 1);
        lines = content.split('\n');
        last = lines.length - 1;

        if (last > 0) {
          nextLine = line + last;
          nextOffset = next - lines[last].length;
        } else {
          nextLine = line;
          nextOffset = offset;
        }

        currentToken = ['string', css.slice(pos, next + 1), line, pos - offset, nextLine, next - nextOffset];

        offset = nextOffset;
        line = nextLine;
        pos = next;
        break;

      case AT:
        RE_AT_END.lastIndex = pos + 1;
        RE_AT_END.test(css);
        if (RE_AT_END.lastIndex === 0) {
          next = css.length - 1;
        } else {
          next = RE_AT_END.lastIndex - 2;
        }

        currentToken = ['at-word', css.slice(pos, next + 1), line, pos - offset, line, next - offset];

        pos = next;
        break;

      case BACKSLASH:
        next = pos;
        escape = true;
        while (css.charCodeAt(next + 1) === BACKSLASH) {
          next += 1;
          escape = !escape;
        }
        code = css.charCodeAt(next + 1);
        if (escape && code !== SLASH && code !== SPACE && code !== NEWLINE && code !== TAB && code !== CR && code !== FEED) {
          next += 1;
          if (RE_HEX_ESCAPE.test(css.charAt(next))) {
            while (RE_HEX_ESCAPE.test(css.charAt(next + 1))) {
              next += 1;
            }
            if (css.charCodeAt(next + 1) === SPACE) {
              next += 1;
            }
          }
        }

        currentToken = ['word', css.slice(pos, next + 1), line, pos - offset, line, next - offset];

        pos = next;
        break;

      default:
        // SCSS PATCH {
        n = css.charCodeAt(pos + 1);

        if (code === HASH && n === OPEN_CURLY) {
          next = pos;
          interpolation();

          content = css.slice(pos, next + 1);
          lines = content.split('\n');
          last = lines.length - 1;

          if (last > 0) {
            nextLine = line + last;
            nextOffset = next - lines[last].length;
          } else {
            nextLine = line;
            nextOffset = offset;
          }

          currentToken = ['word', content, line, pos - offset, nextLine, next - nextOffset];

          offset = nextOffset;
          line = nextLine;
          pos = next;
        } else if (code === SLASH && n === ASTERISK) {
          // } SCSS PATCH
          next = css.indexOf('*/', pos + 2) + 1;
          if (next === 0) {
            if (ignore) {
              next = css.length;
            } else {
              unclosed('comment');
            }
          }

          content = css.slice(pos, next + 1);
          lines = content.split('\n');
          last = lines.length - 1;

          if (last > 0) {
            nextLine = line + last;
            nextOffset = next - lines[last].length;
          } else {
            nextLine = line;
            nextOffset = offset;
          }

          currentToken = ['comment', content, line, pos - offset, nextLine, next - nextOffset];

          offset = nextOffset;
          line = nextLine;
          pos = next;

          // SCSS PATCH {
        } else if (code === SLASH && n === SLASH) {
          RE_NEW_LINE.lastIndex = pos + 1;
          RE_NEW_LINE.test(css);
          if (RE_NEW_LINE.lastIndex === 0) {
            next = css.length - 1;
          } else {
            next = RE_NEW_LINE.lastIndex - 2;
          }

          content = css.slice(pos, next + 1);

          currentToken = ['comment', content, line, pos - offset, line, next - offset, 'inline'];

          pos = next;
          // } SCSS PATCH
        } else {
          RE_WORD_END.lastIndex = pos + 1;
          RE_WORD_END.test(css);
          if (RE_WORD_END.lastIndex === 0) {
            next = css.length - 1;
          } else {
            next = RE_WORD_END.lastIndex - 2;
          }

          currentToken = ['word', css.slice(pos, next + 1), line, pos - offset, line, next - offset];

          buffer.push(currentToken);

          pos = next;
        }

        break;
    }

    pos++;
    return currentToken;
  }

  function back(token) {
    returned.push(token);
  }

  return {
    back: back,
    nextToken: nextToken,
    endOfFile: endOfFile
  };
};
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